CN201994356U - Battery assembly cover cap - Google Patents
Battery assembly cover cap Download PDFInfo
- Publication number
- CN201994356U CN201994356U CN2011201385164U CN201120138516U CN201994356U CN 201994356 U CN201994356 U CN 201994356U CN 2011201385164 U CN2011201385164 U CN 2011201385164U CN 201120138516 U CN201120138516 U CN 201120138516U CN 201994356 U CN201994356 U CN 201994356U
- Authority
- CN
- China
- Prior art keywords
- brace
- burst disk
- battery
- combination block
- sealing ring
- 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
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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
Abstract
The utility model relates to a battery assembly cover cap with improved structure and high safe performance, which comprises a top cover, an explosion-proof piece, a connecting piece and an electronic hole. The top cover, the explosion-proof piece and the connecting piece are longitudinally assembled in a first sealing ring. The electrode hole is welded to the connecting piece. An annular insulation pad is arranged between the connecting piece and the explosion-proof piece. The center of the connecting piece is welded to the center of the explosion-proof piece. The thickness of the center of the connecting piece is thinner than that of other positions. The thickness determines that a welding spot between the connecting piece and the explosion-proof piece is disconnected when the current flowing through the connecting piece and the explosion-proof piece is larger than the preset value so that the battery is powered off and fail to use, and the discordance of the units in the assembly batteries caused by the over-discharge is completely avoided.
Description
Technical field
The utility model relates to battery cap, particularly a kind of combination cover cap of box hat electrokinetic cell.
Background technology
The block of box hat cylinder electrokinetic cell has been continued to use the security combination block of traditional cylindrical battery at present, and it comprises steel cap, thermistor, burst disk (aluminium flake), brace and lug.When battery discharge took place unusual or produces super-high-current, thermistor was had an effect, and the rising internal resistance reduces electric current, plays a protective role, and the security performance of battery is guaranteed.But after battery current recovered original state, thermistor was because of its characteristic can't return to original state, and it is a lot of that cell integrated internal resistance is raise.In assembled battery, the internal resistance rising of individual cell can make the consistency of entire combination battery reduce and cause mis-behave, the lost of life, and security performance descends.Therefore, existing combination cover cap is not brought into play due safety protection function.
The utility model content
The purpose of this utility model provides a kind of architecture advances, safe battery combination block.
The technical solution of the utility model is: a kind of battery combination block comprises and is assembled in top cover, burst disk, the brace in first sealing ring from top to down successively and is welded on lug on the brace.The annular insulating mat sheet is set between described brace and the burst disk.The center of described brace and burst disk welds together.The thickness at the center of described brace is thin than other positions, and the decision of this thickness is when the electric current that flows through described brace and burst disk during greater than preset value, the solder joint disconnection between described brace and the burst disk.
Preferably, submarginal position has a plurality of first through holes symmetrically on the described brace, and described annular insulating mat sheet hides the part of described first through hole at least, and the position near the center on the described brace has a plurality of second through holes.
Preferably, an end of described lug is fixed in an end of described brace, and remainder extends to the other end of described brace along the brace surface.
Preferably, be provided with packing ring between described top cover and the burst disk.
Preferably, described burst disk comprise a smooth substantially ring part with one by described ring part around and relative ring part to the depressed part of lower recess, the minimum point of described depressed part is pressed on the brace, the edge of depressed part is formed with a plurality of explosion-proof points symmetrically, when inner pressure of battery reached preset value, described explosion-proof point split with vent discharge pool gas and electrolyte.
Preferably, described packing ring is the endless metal circle, covers the ring part of described burst disk, and electrically connects with described burst disk and top cover.
Preferably, the middle part of described top cover raises up and forms a boss, and the edge of described boss is formed with through hole.
Preferably, described brace is fixed in second sealing ring that is independent of described first sealing ring, and described second sealing ring removably is housed in described first sealing ring.
Preferably, described first sealing ring and second sealing ring are the material that is electrically insulated.
Battery combination block of the present utility model is at the electric current that flows through described brace and burst disk, be battery discharge current during greater than preset value the connection between described brace and the burst disk disconnect, battery runs down is scrapped, avoided fully because the inconsistent situation in the interior unit of the assembled battery that overdischarge causes.
Description of drawings
Fig. 1 is a battery combination block profile radially among the embodiment.
Fig. 2 is a burst disk profile radially.
Fig. 3 is a brace profile radially.
Embodiment
Describe in further detail below in conjunction with specific embodiment and accompanying drawing structural principle the utility model battery combination block.
Battery combination block of the present utility model is applicable to the cylindrical battery of various cylindrical batteries, particularly metallic casing, for example the box hat cylindrical battery.As shown in Figure 1, the battery combination block 100 of the utility model one embodiment comprises and is assembled in top cover 20, ring washer 30, burst disk 40, brace 50 in annular first sealing ring 10, that made by the metallic conduction material from top to down successively and is welded on lug 60 on the brace.First sealing ring 10 is an insulating material.Between brace 50 and the burst disk 40 annular insulating mat sheet 70 is set also.Battery combination block 100 of the present utility model is the negative or positive electrodes as battery.When battery discharge current during greater than preset value, battery combination block 100 lost efficacy, and battery can't be discharged.When inner pressure of battery reached preset value, battery combination block 100 also can lose efficacy and release battery internal gas and electrolyte be effectively avoided battery explosion, and was as safe as a house.
Wherein, top cover 20 is circular, and its middle part raises up and forms a boss, as the negative or positive electrode of battery.The edge of boss is formed with through hole.
As shown in Figure 2, burst disk 40 comprise a smooth substantially ring part 41 with one by this ring part 41 around and relative ring part 41 to the depressed part 43 of lower recess.The minimum point of depressed part 43 also is the center of burst disk 40, is pressed on the brace 50.The edge of depressed part 43, also promptly with ring part 41 and depressed part 43 joints, be formed with a plurality of explosion- proof points 45,47 symmetrically.In the present embodiment, explosion-proof point 45 is for being formed on the indentation of burst disk 40 upper surfaces, and explosion-proof point 47 is for being formed on the indentation of burst disk 40 lower surfaces.Among other embodiment, explosion-proof point 45 or explosion-proof point 47 can only be arranged.When inner pressure of battery reached preset value, depressed part 43 was upwards heaved, and explosion- proof point 45,47 is torn with vent discharge pool gas and electrolyte, effectively avoided battery explosion.
The center of brace 50 and burst disk 40 welds together, and insulation spacer 70 separates other positions except that the center of brace 50 and burst disk 40.The thickness at brace 50 centers is thin than other positions, and the decision of this thickness is when the electric current (being battery discharge current) that flows through brace 50 and burst disk 40 centers during greater than preset value, and the solder joint disconnection between brace 50 and the burst disk 40 is no longer discharged battery.In the present embodiment, as shown in Figure 2, the centre of brace 50 bottom surfaces is provided with a depression or a pit 51, makes the thickness at brace 50 centers thin than other positions.Submarginal position has a plurality of first through holes 53 symmetrically on the brace 50, and insulation spacer 70 hides the part of first through hole 53.Position near the center on the brace 50 also has a plurality of second through holes 55.When inner pressure of battery increased, interior pressure was applied on the burst disk 40 by this first and second through hole 55.When inner pressure of battery reached preset value, the insulation spacer 70 that hides first through hole 53 can be open, and interior gas of battery and electrolyte are discharged apace.
Refer again to Fig. 1, an end of lug 60 is fixed in an end of brace 50 bottom surfaces, and the place promptly keeps to the side.The keep to the side position at place of the other end that the remainder of lug 60 extends to brace 50 bottom surfaces along the diameter of brace 50.Lug 60 is to adopt the mode of ultra-sonic welded to be welded to brace 50 bottom surfaces, the heat that produces during owing to welding, lug 60 downward natural torsions, very convenient being welded on the battery battery core.
Welding between brace 50 and the burst disk 40 shake is disconnected when preventing to be ultrasonically welded to lug 60 on the brace 50, can earlier lug 60 be welded on the brace 50, again brace 50 is spoted weld on the burst disk 40.Be handled easily, brace 50 is fixed in second sealing ring 80 that is independent of first sealing ring 50.And second sealing ring 80 removably is housed in first sealing ring 10.In the present embodiment, first sealing ring 50 sees to have a step-like structure from the back side, second sealing ring 80 can with this step-like structure interference fit, thereby be assembled in first sealing ring 50.After the connection between brace 50 and the burst disk 40 disconnects, can keep in repair or change brace 50, thereby make the part recycling of battery combination block 100 except that brace 50, avoid waste.Among other embodiment, can cancel second sealing ring 80, brace 50 directly is encapsulated in first sealing ring 10.
To sum up, battery combination block of the present utility model lost efficacy during greater than preset value in battery discharge current, cut off the battery discharge path, and battery runs down is scrapped, and had avoided fully because the inconsistent situation in unit in the assembled battery that overdischarge causes.When inner pressure of battery reached preset value, burst disk was pressed in can being torn and discharging.Brace detachably is encapsulated in the sealing ring, makes things convenient for the battery assembling.
The above embodiment has only expressed execution mode of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.
Claims (9)
1. battery combination block, comprise and be assembled in top cover, burst disk, the brace in first sealing ring from top to down successively and be welded on lug on the brace, it is characterized in that, the annular insulating mat sheet is set between described brace and the burst disk, the center of described brace and burst disk welds together, the thickness at the center of described brace is thin than other positions, and the decision of this thickness is when the electric current that flows through described brace and burst disk during greater than preset value, the solder joint disconnection between described brace and the burst disk.
2. battery combination block according to claim 1, it is characterized in that, submarginal position has a plurality of first through holes symmetrically on the described brace, described annular insulating mat sheet hides the part of described first through hole at least, and the position near the center on the described brace has a plurality of second through holes.
3. battery combination block according to claim 1 and 2 is characterized in that, an end of described lug is fixed in an end of described brace, and remainder extends to the other end of described brace along the brace surface.
4. battery combination block according to claim 1 and 2 is characterized in that, is provided with packing ring between described top cover and the burst disk.
5. battery combination block according to claim 4, it is characterized in that, described burst disk comprise a smooth substantially ring part with one by described ring part around and relative ring part to the depressed part of lower recess, the minimum point of described depressed part is pressed on the brace, the edge of depressed part is formed with a plurality of explosion-proof points symmetrically, when inner pressure of battery reached preset value, described explosion-proof point split with vent discharge pool gas and electrolyte.
6. battery combination block according to claim 5 is characterized in that described packing ring is the endless metal circle, covers the ring part of described burst disk, and electrically connects with described burst disk and top cover.
7. battery combination block according to claim 6 is characterized in that, the middle part of described top cover raises up and forms a boss, and the edge of described boss is formed with through hole.
8. battery combination block according to claim 2 is characterized in that, described brace is fixed in second sealing ring that is independent of described first sealing ring, and described second sealing ring removably is housed in described first sealing ring.
9. battery combination block according to claim 8 is characterized in that, described first sealing ring and second sealing ring are the material that is electrically insulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201385164U CN201994356U (en) | 2011-04-29 | 2011-04-29 | Battery assembly cover cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201385164U CN201994356U (en) | 2011-04-29 | 2011-04-29 | Battery assembly cover cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201994356U true CN201994356U (en) | 2011-09-28 |
Family
ID=44670835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201385164U Expired - Lifetime CN201994356U (en) | 2011-04-29 | 2011-04-29 | Battery assembly cover cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201994356U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107634157A (en) * | 2017-09-19 | 2018-01-26 | 东莞市奕东电子有限公司 | A kind of the stable response method and its capping structure of power lithium battery power-off protection |
| CN107968165A (en) * | 2017-11-13 | 2018-04-27 | 泰兴市振兴电子有限公司 | A kind of screw-type lithium battery cap |
| CN108168864A (en) * | 2017-12-22 | 2018-06-15 | 惠州亿纬锂能股份有限公司 | A kind of combination cover cap exhaust pressure relief aptitude tests device and its application |
| CN111668400A (en) * | 2020-05-06 | 2020-09-15 | 深圳市长盈氢能动力科技有限公司 | Power battery cover plate |
| WO2021184504A1 (en) * | 2020-03-20 | 2021-09-23 | 深圳市科达利实业股份有限公司 | Traction battery cover plate and traction battery |
| WO2023050281A1 (en) * | 2021-09-30 | 2023-04-06 | 宁德时代新能源科技股份有限公司 | Battery cell and manufacturing method and manufacturing system therefor, battery, and electric device |
-
2011
- 2011-04-29 CN CN2011201385164U patent/CN201994356U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107634157A (en) * | 2017-09-19 | 2018-01-26 | 东莞市奕东电子有限公司 | A kind of the stable response method and its capping structure of power lithium battery power-off protection |
| CN107968165A (en) * | 2017-11-13 | 2018-04-27 | 泰兴市振兴电子有限公司 | A kind of screw-type lithium battery cap |
| CN108168864A (en) * | 2017-12-22 | 2018-06-15 | 惠州亿纬锂能股份有限公司 | A kind of combination cover cap exhaust pressure relief aptitude tests device and its application |
| WO2021184504A1 (en) * | 2020-03-20 | 2021-09-23 | 深圳市科达利实业股份有限公司 | Traction battery cover plate and traction battery |
| CN111668400A (en) * | 2020-05-06 | 2020-09-15 | 深圳市长盈氢能动力科技有限公司 | Power battery cover plate |
| WO2023050281A1 (en) * | 2021-09-30 | 2023-04-06 | 宁德时代新能源科技股份有限公司 | Battery cell and manufacturing method and manufacturing system therefor, battery, and electric 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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110928 |
|
| DD01 | Delivery of document by public notice | ||
| DD01 | Delivery of document by public notice |
Addressee: Han Shuying Document name: Notice of termination of patent right |