CN2512119Y - Safety device for battery - Google Patents
Safety device for battery Download PDFInfo
- Publication number
- CN2512119Y CN2512119Y CN 01277658 CN01277658U CN2512119Y CN 2512119 Y CN2512119 Y CN 2512119Y CN 01277658 CN01277658 CN 01277658 CN 01277658 U CN01277658 U CN 01277658U CN 2512119 Y CN2512119 Y CN 2512119Y
- Authority
- CN
- China
- Prior art keywords
- base
- battery
- safety device
- locknut
- diaphragm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
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- Y02E60/12—
Abstract
The utility model belongs to a safety device for battery, consisting of a base, a membrane, a locknut and a protective cap, wherein, the base 1 is a pored device; the membrane 2 is arranged on the base; a pored gasket 3 is arranged on the membrane; the pored locknut 4 is arranged on the gasket; the inner diameter of the pored protective cap 5 is slightly more than the base; the protective cap is arranged at the topmost end of the device and connected with the base. The burst pressure of the utility model is 0.5+-0.05 MPa, and a battery bursts under lower pressure to deflate and release pressure in time. Moreover, the utility model can be provided with a plurality of safety membranes for increasing the sectional area of deflation according to the magnitude of the battery capacity, so as to ensure the safety of the battery without explosion and combustion.
Description
Technical field
The invention belongs to the safety device of battery.
Background technology
Mostly safety device on the current battery is to be pressed with in a part of battery case tool marks (C type, Y type or X type tool marks), when battery for a certain reason (as overcharge, cross put, short circuit, collision extruding and fire etc.) when internal pressure increases, battery case can break from the place of tool marks, make the battery pressure release, reach safety effect.But practice shows that this safety device has fatal shortcoming, and promptly fracture pressure is higher, and generally at 1.2～2.5Mpa, when breaking at the tool marks position, battery case pops from sealing-in, blasts, burns.Its consequence is gently then damaged instrument and equipment, and is heavy then hurt sb.'s feelings.
Summary of the invention
Our purpose is to seek a kind of battery safety device, and its starting pressure (being the pressure of battery when beginning outside exhaust) is lower and fluctuation range is little.
Safety device battery safety device is by the base diaphragm, packing ring, and locknut and helmet are formed.Base 1 is for being provided with aperture apparatus, and base is provided with diaphragm 2, and diaphragm is provided with and has hole packing ring 3, packing ring is provided with the locknut 4 that has the hole, the locknut of screwing on compresses, and the internal diameter that has the helmet 5 in hole is a bit larger tham base, is arranged on the top of device and is connected with base.
The diaphragm material of this device is engineering plastics, and thickness is that the advantage of 0.1～0.3mm engineering plastics is that chemical stability is good, the electrolyte of the various batteries of ability (not having an effect) with electrolyte, and property at high and low temperature is good.This has guaranteed that this device can be contained on all types of batteries, and can be under high/low temperature condition, reliable and stable work.
Our safety device of design is a diaphragm type.Its fracture pressure is 0.5 ± 0.05Mpa, the battery venting pressure release in time of breaking under lower pressure; And can a plurality of blowout disks be installed according to the size of battery capacity,, guarantee cell safety, not explode, do not burn to increase the venting sectional area.
Description of drawings Fig. 1: battery safety device is thrown view.
Embodiment
As shown in Figure 1, a matrix base 1 that has the hole is provided with the diaphragm 2 that scribbles fluid sealant, the shape Ying Yu of diaphragm 2 is analogous to the interior shape of matrix of base, make diaphragm be convenient to lay, diaphragm be provided with the shape that has the hole and size roughly the same with the packing ring 3 of diaphragm, compress with having hole locknut 4, to be coated with one deck locking sealant on the screw thread of locknut, with in the base along interlock, dress has hole helmet 5 at last, be bonded on the base with seal rubber sleeve, the internal diameter of helmet is a bit larger tham base, and its effect is insulation.All parts all vertically are fitted together with one heart.
This device once was applied on the electric vehicle lithium ion battery of 55Ah, and four safety devices are housed on every battery, and through extreme condition test (short circuit and extruding), phenomenon on fire from explosion does not all appear in battery.
Claims (3)
1. a sharp battery safety device, by base, diaphragm, packing ring, locknut and helmet are formed; It is characterized by base 1 for being provided with aperture apparatus, base is provided with diaphragm 2, and diaphragm is provided with and has hole packing ring 3, and packing ring is provided with the locknut 4 that has the hole, and the internal diameter that has the helmet 5 in hole is a bit larger tham base, is arranged on the top of device and is connected with base.
2. a kind of battery safety device as claimed in claim 1, it is characterized by described diaphragm is engineering plastics, thickness is 0.1～0.3mm.
3. a kind of battery safety device as claimed in claim 1 is characterized by on the screw thread of described diaphragm and locknut and scribbles fluid sealant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01277658 CN2512119Y (en) | 2001-12-31 | 2001-12-31 | Safety device for battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01277658 CN2512119Y (en) | 2001-12-31 | 2001-12-31 | Safety device for battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2512119Y true CN2512119Y (en) | 2002-09-18 |
Family
ID=33681369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01277658 Expired - Fee Related CN2512119Y (en) | 2001-12-31 | 2001-12-31 | Safety device for battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2512119Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100575012C (en) * | 2005-09-06 | 2009-12-30 | 吉莱特公司 | Razor handle |
-
2001
- 2001-12-31 CN CN 01277658 patent/CN2512119Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100575012C (en) * | 2005-09-06 | 2009-12-30 | 吉莱特公司 | Razor handle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |