CN201868523U - Lithium ion power battery with safety valve - Google Patents
Lithium ion power battery with safety valve Download PDFInfo
- Publication number
- CN201868523U CN201868523U CN2010205836074U CN201020583607U CN201868523U CN 201868523 U CN201868523 U CN 201868523U CN 2010205836074 U CN2010205836074 U CN 2010205836074U CN 201020583607 U CN201020583607 U CN 201020583607U CN 201868523 U CN201868523 U CN 201868523U
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- Prior art keywords
- valve
- safety valve
- battery
- safety
- lithium
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model relates to a lithium ion power battery with a safety valve, which comprises a battery shell. The battery shell is provided with a safety valve, an upper over of the batter shell is provided with three concentric stepped holes, the uppermost section of the three concentric stepped hole sections is provided with a threaded hole, bore diameters of the three holes are reduced gradually from top to bottom, the safety valve includes a one-way valve and a safety bonnet with exhaust holes, the safety bonnet is fittingly mounted on the uppermost threaded hole of the concentric stepped holes, a pressure regulating spring is arranged between the one-way valve and the safety valve, a peripheral oblique conical face is arranged at a fitting mounting position of the lower end face of the one-way valve with the upper cover of the battery shell, and a conical face matched with the peripheral oblique conical face of the one-way valve is arranged at the contact position of the lowermost section of the concentric stepped holes with the one-way valve. The safety valve of the lithium ion power battery is of a split structure, the lower end face of the one-way valve is of a conical structure, the safety valve and the upper cover of the battery shell are pressed tightly through the pressure regulating spring, a seal face of the safety valve is an annular conical face, and accordingly contact area of the seal face is enlarged effectively and the battery is easy to seal.
Description
Technical field
The utility model relates to a kind of lithium battery, is specifically related to a kind of lithium-ion-power cell that has safety valve.
Background technology
But lithium ion battery have voltage height, specific energy big, have extended cycle life, characteristics such as security performance is good, the little fast charging and discharging of self discharge, therefore be widely used in fields such as various electric automobiles, city bus, power UPS, wind-powered electricity generation energy storage.But lithium ion battery change into, discharge and recharge, storage stage all has a certain amount of gas and produces, the gas residue that produces causes alluvial at inside battery, thereby cause inner pressure of battery to rise, if internal gas is got rid of in the untimely unlatching of safety valve, may cause battery explosion and cause danger.
Battery safety valve is the important component part of lithium ion battery, it is mainly used in the security protection of battery, short circuit etc. occurs at inside battery and can open rapidly when unusual, gas, the pressure of inside battery is discharged rapidly, to reduce the generation that hazard events such as blast, burning appear in battery.China Patent No. ZL 200820149256.9 discloses a kind of lithium battery that has safety valve, comprise battery container, be provided with a relief valve device at the battery container top, this relief valve device comprises three sections concentric stepped holes on the housing top board, the epimere of three sections concentric stepped holes is a screwed hole, interlude and hypomere are circular hole, the aperture of three sector holes diminishes from top to bottom successively, on the mouth of getting out of a predicament or an embarrassing situation, be provided with a sealing plate, be provided with crimp spring on sealing plate, the safety valve that is installed with its design of gas permeability valve cover on screwed hole adopts sealing plate with the valve body lower end bench port.The safety valve that this lithium battery adopts adopts sealing plate to carry out flat seal with the leave from office terrace, if sealing plate or leave from office terrace machining accuracy can influence the security seal of safety valve when low, may the phenomenon of leakage occur or ambient atmos enters inside battery, the performance of battery is exerted an influence.
The utility model content
The purpose of this utility model provides a kind of lithium-ion-power cell that has safety valve, to solve the existing poorly sealed problem that influences the cell safety sealing of battery safety valve.
For achieving the above object, the utility model adopts following technical scheme: a kind of lithium-ion-power cell that has safety valve, comprise battery container, on battery case, cover and be provided with a relief valve device, be covered with three sections concentric stepped holes on the battery container, the epimere of three sections concentric stepped holes is a screwed hole, the aperture of three sector holes diminishes from top to bottom successively, described safety valve comprises unidirectional valve and cooperates the safe valve gap of installing that has steam vent with the epimere screwed hole of concentric stepped hole, is provided with pressure spring between described unidirectional valve and the safe valve gap; The lower surface of described unidirectional valve cooperates the installation place to be provided with circumferential scalene cone with the battery container loam cake, the hypomere of described concentric stepped hole and the conical surface that the unidirectional valve contact position is provided with and the circumferential scalene cone of unidirectional valve coincide.
Described unidirectional valve upper end is provided with interior counterbore, and described pressure spring is installed in the interior counterbore.
Described safe valve gap lower end is provided with the lead that cooperates installation with pressure spring.
The perisporium of counterbore is provided with air vent hole in the described unidirectional valve.
Be bonded with caulking gum on the scalene cone of described unidirectional valve.
The inner surface of described safe valve gap and steam vent corresponding section are provided with groove, and the bottom surface of groove communicates with steam vent.
Its safety valve of lithium-ion-power cell that the utility model has safety valve adopts split-type structural, pyramidal structure is adopted in the lower surface of unidirectional valve, compress by pressure spring with the battery case loam cake, its sealing surface is a ring-type taper anchor ring, improved the contact area of sealing surface effectively, help the sealing of battery, avoid occurring the phenomenon of leakage or ambient atmos and enter inside battery the performance of battery is exerted an influence.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model safety valve.
Embodiment
Below in conjunction with specific embodiment the utility model is done further introduction.
As Fig. 1～Figure 2 shows that the utility model has the lithium battery of safety valve and the structural representation of safety valve, as seen from the figure, this lithium-ion-power cell comprises battery container 5, on battery container loam cake 1, be provided with a relief valve device 6, be covered with three sections concentric stepped holes on the battery container, the epimere of three sections concentric stepped holes is a screwed hole, and the aperture of three sector holes diminishes from top to bottom successively.This safety valve comprises that the upper end has the unidirectional valve 4 of interior counterbore and cooperates the safe valve gap 2 of installation with the epimere screwed hole of concentric stepped hole, the safe valve gap 2 outer hexagonal socket nut openings that are provided with, cover and be provided with exhaust hole, be provided with pressure spring 3 between unidirectional valve and the safe valve gap; Safe valve gap lower end is provided with the lead that cooperates installation with pressure spring.Unidirectional valve 4 adopts the column structure of upper end hollows, and the lower end has the seal face of taper, with one heart the conical surface that hypomere is provided with the unidirectional valve contact position and the circumferential scalene cone of unidirectional valve is identical of stepped hole.Pressure spring 3 is installed in the interior counterbore of unidirectional valve 4, and the perisporium around the interior counterbore is provided with air vent hole.
In addition, the inner surface of safe valve gap is provided with the groove that communicates with the upper end steam vent, increases the air displacement under the emergency situations, saves material.
Safe valve gap of the present utility model and cell cover adopt simple, reliable and easy being threaded of processing effectively raises the exploitativeness of this structure, and safety valve covers end and is provided with the hexagonal socket nut opening and makes things convenient for installation and removal.Whole safety valve uses the interior-type structure, is embedded in the battery case loam cake, has effectively reduced volume of battery, has improved the volume of battery specific energy; Pressure spring fixed form in the middle of safe valve gap and the unidirectional valve is: lead in inside by the cylindrical lead of safety valve gap in the upper end, can not topple by the interior-type structure common guarantee spring that the unidirectional valve upper end is provided with in the lower end, improve the useful life of spring, and spring can exchange at different batteries, realized the interchangeability of structure, realized effective pressure release of battery in addition, the stage casing stepped hole of battery case loam cake can be avoided spring coal transition compression when using simultaneously, prevents locked; The lower end of unidirectional valve is a pyramidal structure, and the pyramidal structure top is bonded with caulking gum, compresses by spring with the battery cap, and its sealing surface is a ring-type taper anchor ring, has improved the contact area of sealing surface effectively, helps the sealing of battery.Unidirectional valve groove inner hole wall is provided with air vent hole, has guaranteed the gas drainage of safety valve when venting.
The advantage of safety valve for lithium ion battery described in the utility model is: (1) safety valve structure is simple, is easy to processing, saved processing cost, and safety valve is easy for installation, is easy to safeguard; (2) safety valve spring can exchange and regulate according to different batteries, has realized the interchangeability of battery safety valve, in addition, has realized effective pressure release of battery; (3) sealing surface of safety valve is the ring-type cone structure, and sealing means is the contact-making surface sealing, effectively increases the sealing surface body, has improved the reliability of sealing.
Claims (6)
1. lithium-ion-power cell that has safety valve, comprise battery container, on battery case, cover and be provided with a relief valve device, be covered with three sections concentric stepped holes on the battery container, the epimere of three sections concentric stepped holes is a screwed hole, the aperture of three sector holes diminishes from top to bottom successively, it is characterized in that: described relief valve device comprises unidirectional valve and cooperates the safe valve gap of installing that has steam vent with the epimere screwed hole of concentric stepped hole, is provided with pressure spring between described unidirectional valve and the safe valve gap; The lower surface of described unidirectional valve cooperates the installation place to be provided with circumferential scalene cone with the battery container loam cake, the hypomere of described concentric stepped hole and the conical surface that the unidirectional valve contact position is provided with and the circumferential scalene cone of unidirectional valve coincide.
2. the lithium-ion-power cell that has safety valve according to claim 1 is characterized in that: described unidirectional valve upper end is provided with interior counterbore, and described pressure spring is installed in the interior counterbore.
3. the lithium-ion-power cell that has safety valve according to claim 1 and 2 is characterized in that: described safe valve gap lower end is provided with the lead that cooperates installation with pressure spring.
4. the lithium-ion-power cell that has safety valve according to claim 3 is characterized in that: the perisporium of counterbore is provided with air vent hole in the described unidirectional valve.
5. the lithium-ion-power cell that has safety valve according to claim 4 is characterized in that: be bonded with caulking gum on the scalene cone of described unidirectional valve.
6. the lithium-ion-power cell that has safety valve according to claim 5 is characterized in that: the inner surface of described safe valve gap and steam vent corresponding section are provided with groove, and the bottom surface of groove communicates with steam vent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205836074U CN201868523U (en) | 2010-10-29 | 2010-10-29 | Lithium ion power battery with safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205836074U CN201868523U (en) | 2010-10-29 | 2010-10-29 | Lithium ion power battery with safety valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201868523U true CN201868523U (en) | 2011-06-15 |
Family
ID=44139668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205836074U Expired - Lifetime CN201868523U (en) | 2010-10-29 | 2010-10-29 | Lithium ion power battery with safety valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201868523U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103000967A (en) * | 2012-12-10 | 2013-03-27 | 东莞市伊动新能源科技有限公司 | Battery safety protection device |
| CN103151479A (en) * | 2013-01-31 | 2013-06-12 | 浙江努奥罗新能源科技有限公司 | Energy storage battery for coal mine and battery core thereof |
| CN104727999A (en) * | 2015-03-09 | 2015-06-24 | 广西华原过滤系统股份有限公司 | Automatic air-exhausting fuel oil filtering system |
| CN106848146A (en) * | 2017-03-13 | 2017-06-13 | 欣旺达电子股份有限公司 | Lithium battery liquid injection hole closed exhaust device and lithium battery core producing method |
| WO2022255376A1 (en) * | 2021-06-03 | 2022-12-08 | 株式会社パイオラックス | Pressure relief valve for power storage device |
-
2010
- 2010-10-29 CN CN2010205836074U patent/CN201868523U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103000967A (en) * | 2012-12-10 | 2013-03-27 | 东莞市伊动新能源科技有限公司 | Battery safety protection device |
| CN103000967B (en) * | 2012-12-10 | 2015-07-08 | 东莞市伊动新能源科技有限公司 | Battery safety protection device |
| CN103151479A (en) * | 2013-01-31 | 2013-06-12 | 浙江努奥罗新能源科技有限公司 | Energy storage battery for coal mine and battery core thereof |
| CN104727999A (en) * | 2015-03-09 | 2015-06-24 | 广西华原过滤系统股份有限公司 | Automatic air-exhausting fuel oil filtering system |
| CN106848146A (en) * | 2017-03-13 | 2017-06-13 | 欣旺达电子股份有限公司 | Lithium battery liquid injection hole closed exhaust device and lithium battery core producing method |
| WO2022255376A1 (en) * | 2021-06-03 | 2022-12-08 | 株式会社パイオラックス | Pressure relief valve for power storage device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110615 |
|
| CX01 | Expiry of patent term |