CN2379916Y - Cubic battery having anti-explosion structure - Google Patents
Cubic battery having anti-explosion structure Download PDFInfo
- Publication number
- CN2379916Y CN2379916Y CN 99236454 CN99236454U CN2379916Y CN 2379916 Y CN2379916 Y CN 2379916Y CN 99236454 CN99236454 CN 99236454 CN 99236454 U CN99236454 U CN 99236454U CN 2379916 Y CN2379916 Y CN 2379916Y
- Authority
- CN
- China
- Prior art keywords
- rectangular cell
- cell shell
- groove
- utility
- model
- 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 - Lifetime
Links
Classifications
-
- Y02E60/12—
Landscapes
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model relates to a square battery case which can achieve the purposes of homogeneous pressure relief and preventing a battery to explode through a groove ditch carved on the lateral wall of the battery case and an explosion-proof structure filled by sealing materials of metal or synthetic resin. The utility model is suitable for sealed batteries, particularly sealed square lithium ion secondary batteries.
Description
The utility model belongs to the especially battery case with blast resistance construction of sealed type lithium rechargeable battery use of enclosed cell.
In recent years, because electronic equipments such as video camera, mobile phone, laptop computer develop to lighting, the driving power of using as these electronic equipments, suitable various alkaline batteries or lithium rechargeable battery with high capacity are arranged is the nonaqueous electrolytic solution secondary battery of representative, and described water wasting electrolyte secondary batteries wishes to make the enclosed cell of high-energy-density, part throttle characteristics excellence.In addition, the enclosed cell that energy density is high, because of the fault of the relevant device that comprises charger and undue charging or other improper uses etc. along with chemical reaction produces abnormal gas at inside battery, cell internal pressure is excessive, thereby the battery explosion accident takes place, its consequence is damage equipment then gently, and is heavy then hurt sb.'s feelings.Therefore, when cell internal pressure is excessive, for ease of gas leak, prevent the battery explosion accident, existing technology employing method has: (1) is provided with the pressure relief safety valve (Chinese patent CN1200199A, CN1138753A) that is made of plumbous, aluminium foil in combination cover; (2) link cutting on the hush panel can be opened the book of decompression or pressure release with formation a little less than; (3), scribe the groove that a circle of not sealing or the shape of a hoof and cross section are V-arrangement (Chinese patent CN2133055Y) again at two kidney slots of battery case base pressure system.Yet, the safety valve structure complexity of method (1), cost height; Method (2) and (3) require high to process technology, battery case quality homogeneity is poor, fail fully to guarantee safety relief or pressure release and get rid of battery explosion hidden danger.
The purpose of this utility model is to overcome as above shortcoming and the rectangular cell shell with blast resistance construction that a kind of cost is low, the pressure release homogeneity is good is provided.
Rectangular cell shell of the present utility model includes to wear at a sidewall of rectangular cell shell at least carves at least one groove, be filled with the blast resistance construction of metal or synthetic resin encapsulant in the groove, wherein said wear carve be meant with line cut, methods such as otch, metal trough, punching press, mould notes, chemical corrosion penetrate shell wall.
Above-mentioned groove shape can be arc line type, linear pattern, cross, X font, rice font etc.
Above-mentioned groove is at the optimum seeking site mid portion of sidewall.
Relative two sidewalls of the preferred maximum area of above-mentioned sidewall.
Above-mentioned filling is welding or adhering and sealing.
It is low to be used to make the enclosed cell cost according to the battery case with blast resistance construction of the present utility model, and the pressure release homogeneity is good, effectively and reliably prevents battery explosion.
Accompanying drawing 1 is a schematic perspective view of the present utility model;
Accompanying drawing 2 is cross-sectional views of the present utility model.
Below in conjunction with accompanying drawing the utility model is elaborated:
Embodiment 1: make 63mm * 34mm * 10mm, 1 some on the rectangular cell shell of wall thickness 0.45mm, wherein open top is welded with the hush panel 2 of serving as electrode terminal, and wearing the punching press at quarter at the sidewall mid portion of maximum area has the straight line groove 3 of an appropriateness, and is used to be equipped with the cavity 4 of electrode.Groove is connect filling with metallic lead or soldering, and will have the hush panel welded seal of liquid injection port, but liquid injection port is tightly connected with the gas circuit that has the step-less adjustment air pressure size of pressure gauge, feed gases at high pressure, ascending being adjusted to makes the battery case distortion, groove rise split disappointing, the record pressure value (pressure unit is kg/cm
2), result such as following table one.
Table one:
| Numbering | ?1 | ?2 | ?3 | ?4 | ?5 | ?6 | ?7 | ?8 | ?9 | ?10 |
| ?50℃ | ?4.2 | ?4.5 | ?4.7 | ?4.3 | ?4.1 | ?4.6 | ?4.5 | ?4.3 | ?4.7 | ?4.1 |
| ?120℃ | ?4.3 | ?4.2 | ?4.2 | ?4.5 | ?4.1 | ?4.5 | ?4.3 | ?4.3 | ?4.1 | ?4.2 |
Embodiment 2: groove is designed to cross, after filling with the epoxy resin gluing, press the operation of embodiment 1 same procedure, (pressure unit is kg/cm to write down pressure value
2), result such as following table two.
Table two:
| Numbering | ?1 | ?2 | ?3 | ?4 | ?5 | ?6 | ?7 | ?8 | ?9 | ?10 |
| ?50℃ | ?3.7 | ?3.9 | ?4.1 | ?3.9 | ?3.7 | ?3.7 | ?4.0 | ?4.1 | ?3.9 | ?3.9 |
| ?120℃ | ?3.5 | ?3.7 | ?3.9 | ?3.7 | ?4.0 | ?3.8 | ?3.9 | ?3.5 | ?3.5 | ?3.8 |
Embodiment 1 and 2 test pressure data declaration, the groove of explosion prevention function is arranged and be filled with metal or synthetic resin encapsulant therein in the design of rectangular cell shell side wall, produce blow-up deformation owing to large-area sidewall is easier to be subjected to the inner pressure of battery effect, make the little groove encapsulant of toughness produce the crack and pressure release.Adopt different packing materials by the battery case to different wall, it is good to guarantee to satisfy interior pressure request, the homogeneity set.
Preferred embodiment of the utility model has been described above in conjunction with the accompanying drawings.But, should be clear and definite, the embodiment that the utility model is not limited to narrate above, person skilled in art can make various modifications and replace and also belong to the utility model under the situation that does not depart from the spirit or scope that the appended every claim of the utility model defines.
Claims (5)
1. rectangular cell shell with blast resistance construction is characterized in that described rectangular cell shell includes to wear at sidewall of battery case at least to carve at least one groove, is filled with the blast resistance construction of metal or synthetic resin encapsulant in the groove.
2. rectangular cell shell according to claim 1 is characterized in that described groove shape can be arc line type, linear pattern, cross, X font, rice font etc.
3. rectangular cell shell according to claim 2 is characterized in that the described mid portion of stating groove at sidewall.
4. rectangular cell shell according to claim 1 is characterized in that described upper side wall is two relative sidewalls of maximum area.
5. according to the described rectangular cell shell of claim 1～4, it is characterized in that described filling is welding or adhering and sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99236454 CN2379916Y (en) | 1999-06-29 | 1999-06-29 | Cubic battery having anti-explosion structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99236454 CN2379916Y (en) | 1999-06-29 | 1999-06-29 | Cubic battery having anti-explosion structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2379916Y true CN2379916Y (en) | 2000-05-24 |
Family
ID=34024267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99236454 Expired - Lifetime CN2379916Y (en) | 1999-06-29 | 1999-06-29 | Cubic battery having anti-explosion structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2379916Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102509644A (en) * | 2011-11-30 | 2012-06-20 | 天津力神电池股份有限公司 | Cylindrical super capacitor |
| CN109863620A (en) * | 2017-04-13 | 2019-06-07 | 株式会社Lg化学 | Secondary cell |
-
1999
- 1999-06-29 CN CN 99236454 patent/CN2379916Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102509644A (en) * | 2011-11-30 | 2012-06-20 | 天津力神电池股份有限公司 | Cylindrical super capacitor |
| CN109863620A (en) * | 2017-04-13 | 2019-06-07 | 株式会社Lg化学 | Secondary cell |
| CN109863620B (en) * | 2017-04-13 | 2021-12-24 | 株式会社Lg化学 | Secondary battery |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100438189C (en) | Secondary battery | |
| CN201508864U (en) | Battery cover plate assembly, single battery and battery pack | |
| CN204577542U (en) | Metal-air cell heap and battery cell thereof | |
| CN101626066A (en) | Lithium battery cover plate with explosion and breakage preventing protection apparatus and production method thereof | |
| CN201490240U (en) | Lithium battery cover plate with explosion protection and power-off protection device | |
| CN108461665A (en) | Secondary cell head cover and its secondary cell | |
| CN201871891U (en) | Novel battery welding and positioning tooling | |
| CN101388471A (en) | Secondary battery | |
| CN202019008U (en) | Explosion-proof cover plate of lithium battery | |
| CN2824317Y (en) | Aluminium shell cylinder shaped lithium ion cell | |
| CN2379916Y (en) | Cubic battery having anti-explosion structure | |
| CN114512672A (en) | Power type battery | |
| CN102569872B (en) | Lithium ion battery and manufacturing method thereof | |
| CN2842748Y (en) | Column-type secondary cell lid and column type secondary cell adopting same | |
| CN206564275U (en) | Electrokinetic cell protects system | |
| CN201178111Y (en) | Safety apparatus for battery | |
| CN2824298Y (en) | Battery explosion-proof cover plate and lithium ion cell with same | |
| CN205177898U (en) | Take battery apron of blast resistant construction | |
| CN216648531U (en) | Cylindrical high-power lithium battery structure | |
| CN201338174Y (en) | Large capacity battery safety valve welding positioning technical equipment | |
| CN2469562Y (en) | Battery explosion-proof component and lithium ion battery with this component | |
| CN102104118B (en) | Sealing plate of high capacity and power lithium battery | |
| CN2701079Y (en) | Battery sealing cover plate | |
| CN2423659Y (en) | Battery explosion-proof equipment and lighium ion battery having the equipment | |
| CN207558842U (en) | A kind of new type lithium ion battery lid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHENZHEN BYD LITHIUM BATTERY CO., LTD. Free format text: FORMER NAME OR ADDRESS: LIBI BATTERY CO., LTD., SHENZHEN CITY |
|
| CP01 | Change in the name or title of a patent holder |
Patentee after: Shenzhen BYD Lithium Battery Co., Ltd. Patentee before: Libi Battery Co., Ltd., Shenzhen City |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |