CN201838638U - Battery cap combination and cylindrical secondary battery - Google Patents
Battery cap combination and cylindrical secondary battery Download PDFInfo
- Publication number
- CN201838638U CN201838638U CN2010202043526U CN201020204352U CN201838638U CN 201838638 U CN201838638 U CN 201838638U CN 2010202043526 U CN2010202043526 U CN 2010202043526U CN 201020204352 U CN201020204352 U CN 201020204352U CN 201838638 U CN201838638 U CN 201838638U
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- CN
- China
- Prior art keywords
- pressure
- protective device
- pressure protective
- substrate
- client
- 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
- 108700028490 CAP protocol 2 Proteins 0.000 title claims abstract description 14
- 239000000758 substrate Substances 0.000 claims abstract description 21
- 230000001681 protective effect Effects 0.000 claims description 46
- 238000009434 installation Methods 0.000 claims description 21
- 238000003466 welding Methods 0.000 claims description 5
- 238000009413 insulation Methods 0.000 abstract description 4
- 230000002093 peripheral effect Effects 0.000 abstract description 2
- 238000005336 cracking Methods 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
Images
Classifications
-
- 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
Landscapes
- Connection Of Batteries Or Terminals (AREA)
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model relates to a battery cap combination, which comprises an insulation sleeve, a substrate, a pressure protection device and an electrode leading-out end. The substrate, the pressure protection device and the electrode leading-out end are arranged in the insulation sleeve in sequence, one end of the substrate is connected with the pressure protection device, the other end of the substrate is connected with a pole lug of a cell, the pressure protection device and the electrode leading-out end are in conduction, the pressure protection device comprises a mounting part on the peripheral edge and a pressing part adjacent to the mounting part, and the mounting part is connected with the pressing part through a pressure relief part capable of cracking. The pressure protection device is also provided with a cylindrical groove used for controlling the thickness of the pressure relief part and the deflection of the pressing part. The utility model also relates to a related cylindrical secondary battery. Since the pressure protection device is provided with the cylindrical groove, and the structural strength and the force-bearing capacity of the pressure relief part can be changed accurately through changing the depth and the diameter of the cylindrical groove, the relieved pressure of the cell can be controlled more accurately and effectively.
Description
Technical field
The utility model relates to lithium ion battery, is specifically related to a kind of battery cap combination and column secondary battery that can more accurate control pressure release pressure.
Background technology
Lithium rechargeable battery has become the indispensable secondary power supply of portable electric appts such as digital camera, video camera because of its high-energy-density and portable performance.Column secondary battery is than standard and battery product commonly used.
Please refer to Fig. 1 and Fig. 2, be depicted as the capping structure of existing column secondary battery.Existing column secondary battery generally comprises the battery cap combination of battery container, electric core and sealed electrical core.The electricity core is generally packed into earlier not by in the battery container of roll-in mounting groove, places insulating trip 132 again in electric core top, and the lug 126 of electric core need weld with the substrate 140 of block combination.In housing, inject electrolyte then, and at the mounting groove 112 of this battery container top roll compression set position insulating trip, the combination of will blocking a shot again afterwards is placed on mounting groove 112 tops, adopts block a shot combination and battery container apical margin 110 of the method that laminates to combine.This block is combined in and is laminated with pressure protect sheet 150, temperature protection sheet 160 and electrode leads to client 170 on the substrate 140.Wherein, pressure protect sheet 150, temperature protection sheet 160 and electrode leads to client 170 are supported on the boss of insulating case 180; this pressure protect sheet 150 also is a round sheet for the profile of corresponding battery container; the connecting portion 152 that generally comprises the installation portion 151 that is positioned at outer peripheral edges and be positioned at the middle part; this connecting portion 152 is the deep sunk structure 155 of electricity core on one day; the top of its sunk structure 155 is a groove 153, and the bottom need be born the battery container pressure inside and can be out of shape under the internal pressure effect.This installation portion 151 is offered breach 158 with the junction of connecting portion 152, thereby formation fracture belt, when the battery container internal pressure was excessive, connecting portion 152 was torn because of compressive deformation and in structural strength and the more weak fracture belt place of stressed size, thereby reached the purpose of pressure release.
But this kind changes fracture belt thickness by digging breach, with the mode poor accuracy in the pressure control of damaged pressure release that reduces structural strength.The break situation of pressure release of the pressure release and lag behind of breaking in advance happens occasionally, and the pressure release of breaking in advance causes the battery that should not scrap to be scrapped, and the pressure release meeting of breaking of lagging behind causes personal safety hidden danger for the battery user.
Therefore, how more accurately to control the pressurized limit of fracture belt, accurately grasp the inner pressure of battery blow-up point, become the technical problem that industry needs to be resolved hurrily.
The utility model content
The purpose of this utility model provides a kind of battery cap combination and relevant column secondary battery that can more accurate control pressure release pressure.
The technical scheme that realizes described purpose is: a kind of battery cap combination; comprise insulating case and be installed in insulating case interior substrate, pressure protective device and electrode leads to client successively; this substrate one end connects the pressure protective device other end and is connected with the lug of electric core; this pressure protective device and electrode leads to client conducting; this pressure protective device comprises the installation portion that is formed at periphery and in abutting connection with the portion that exerts pressure of installation portion, but the pressure release portion of this installation portion by rhegma connects this portion that exerts pressure.Offer on this pressure protective device and be used to the cylindrical groove controlling pressure release portion thickness and exert pressure portion's amount of deflection.
Preferably, this pressure protective device middle part is provided with the connecting portion that connects the portion that exerts pressure, and this pressure protective device is by connecting portion and substrate welding.
Preferably, the degree of depth of this cylindrical groove is the A millimeter, and diameter is the B millimeter.
The utility model also relates to a kind of column secondary battery; comprise shell; installing in the enclosure electric core and with the combination of the block of shell sealed electrical core; this block combination comprises insulating case and is installed in the interior substrate of insulating case successively; pressure protective device and electrode leads to client; this substrate one end connects the pressure protective device other end and is connected with the lug of electric core; this pressure protective device and electrode leads to client conducting; this pressure protective device comprises the installation portion that is formed at periphery and in abutting connection with the portion that exerts pressure of installation portion, but the pressure release portion of this installation portion by rhegma connects this portion that exerts pressure.Offer on this pressure protective device and be used to the cylindrical groove controlling pressure release portion thickness and exert pressure portion's amount of deflection.
The utility model beneficial effect compared with prior art is:
Battery cap combination of the present utility model and column secondary battery; offer the cylindrical groove of the may command pressure release portion's thickness and the portion's amount of deflection of exerting pressure on the pressure protective device; the degree of depth and two parameters of diameter by cylindrical groove come more accurately to change pressure release bilge construction intensity and stressed size, thereby more accurate and more effectively control electric core pressure release pressure.
Further, by the technical scheme of each embodiment, bring following beneficial effect:
Block combination of the present utility model and column secondary battery; connect by the conducting of thermistor ring between pressure protective device and the electrode leads to client; make when inside battery fault temperature raises, the thermistor circuit of can in time cutting off the electricity supply, thus avoid electrical equipment is caused damage.
Description of drawings
Below by embodiment also in conjunction with the accompanying drawings, the utility model is described in further detail:
Fig. 1 is the structural representation of existing battery cap combination;
Fig. 2 is the structural representation of existing pressure protective device;
Fig. 3 is the structural representation of the column secondary battery installation and processing groove of present embodiment;
Fig. 4 is the structural representation of present embodiment battery cap combination;
Fig. 5 is the structural representation of present embodiment column secondary battery;
Fig. 6 is the sectional structure chart of present embodiment pressure protective device;
Fig. 7 is the plan structure figure of present embodiment pressure protective device.
Embodiment
See also Fig. 3 to Fig. 5, present embodiment relates to a kind of column secondary battery, comprises shell 10, electric core 30 and block combination.This block combination comprises insulating case 80, substrate 40, pressure protective device 50 and electrode leads to client 70.These insulating case 80 inside are provided with and are used for the boss 82 of support pressure protective device 50 and electrode leads to client 70.These substrate 40 1 ends connect pressure protective device 50 other ends by solder joint 42 and are connected with the lug 36 of electric core 30; this pressure protective device 50 and electrode leads to client 70 conductings; this pressure protective device 50 comprises the installation portion 51 that is formed at periphery, in abutting connection with the portion that exerts pressure 55 of installation portion 51 and the connecting portion that is used for welding substrate 40 52 that is positioned at the center, but the pressure release portion 58 of this installation portion 51 by rhegma connects these portions 55 that exert pressure.Offer the cylindrical groove 59 that is used to control pressure release portion 58 thickness and connecting portion 52 amounts of deflection simultaneously on this pressure protective device 50.The degree of depth and two parameters of diameter by cylindrical groove 59 come more accurately to change pressure release portion 58 structural strengths and stressed size, thereby more accurate and more effectively control electric core pressure release pressure.
Below specifically introduce the structure of this column secondary battery.
Fig. 3 to 5 is depicted as the assembling process schematic diagram of battery.During the battery assembling, insulating trip 34 under placing in electric core 30 bottoms earlier makes negative electrode lug 38 be positioned at the below of insulating trip 34 down, so that negative electrode lug contacts as the negative pole exit with battery container 10.To put into housing 10 by the electric core 30 that volume core 20 is reeled then, and, anode ear 36 be passed from last insulating trip 32 placing insulating trip 32 above the electric core 30.Insulating trip 32 position roll-in mounting grooves 12 on housing then, this mounting groove 12 also are convenient to the combination of assembling block on the other hand with the electric core 30 of battery bottom is fixing on the one hand.
Also be provided with a thermistor ring 60 between this pressure protective device 50 and the electrode leads to client 70; this thermistor ring 60 conductings connect pressure protective device 50 and electrode leads to client 70, and blocking circuit guarantees the safety in utilization of battery when the inside battery temperature rise is big.
Please also refer to Fig. 6 and Fig. 7, this pressure protective device 50 comprises the installation portion 51 that is formed at periphery and in abutting connection with the portion that exerts pressure 55 of installation portion, and this pressure protective device 50 further comprises the connecting portion that is used for welding substrate 40 52 that extends towards electric in-core portion.These exert pressure portion 55 and installation portion 51 junctions are pressure release portion 58.This pyramidal portion 55 that exerts pressure of extending towards electric in-core portion forms a pyramidal groove 53 simultaneously above pressure protective device 50; cylindrical groove 59 is further processing after groove 53 forms; wherein, the degree of depth of this cylindrical groove 59 is the A millimeter, and diameter is the B millimeter.In the present embodiment, the center of this cylindrical groove 59 overlaps with the center of the connecting portion 52 and the portion that exerts pressure, to guarantee the stable of stressed equilibrium and damaged pressure release.The pressure release limit of breaking of pressure release portion 58 is decided by the structural strength of pressure release portion 58 itself and portion's 55 pressures of exerting pressure.The degree of depth of this cylindrical groove 59 (A millimeter) correspondence has determined the thickness of pressure release portion 58, and the diameter of cylindrical groove 59 (B millimeter) correspondence has determined the lifting surface area of the portion that exerts pressure 55, and the stressed size of the portion 55 that exerts pressure also is the stressed size of pressure release portion 58.When the thickness of pressure release portion 58 was constant, portion's 55 lifting surface areas of exerting pressure were big more, that is pressure release portion 58 is stressed big more, the easy more pressure release limit of breaking that reaches.When the lifting surface area of the portion of exerting pressure 55 was constant, the degree of depth of cylindrical groove 59 was shallow more, and the thickness of corresponding pressure release portion 58 is just big more, that is pressure release portion 58 can bear bigger power, was not easy to reach the pressure release limit of breaking more.Therefore, the degree of depth of cylindrical groove 59 and diameter become the parameter of controlling the pressure release limit of breaking.Can more accurately change pressure release portion 58 structural strengths and stressed size by the degree of depth and two parameters of diameter that change cylindrical groove 59 in the present embodiment, thus more accurate and more effectively control electric core pressure release pressure.
In the present embodiment, electrode leads to client 70 is as anodal exit, and the negative electrode lug 38 of bottom connects housing 10, so housing 10 needs as the negative pole exit and electrode leads to client 70 insulation.But electrode leads to client 70 also can be used as negative pole exit and negative electrode lug 36 conductings; The anode ear 38 of bottom connects housings 10, and is same, and housing 10 needs as anodal exit and as electrode leads to client 70 insulation of negative pole.
In order better electric core 30 in the housing and electrolyte to be sealed, this boss 82 is provided with the bulge loop (sign) that is used for radial seal simultaneously.
Above content be in conjunction with concrete preferred implementation to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection range of the present utility model.
Claims (8)
1. battery cap combination; comprise insulating case and be installed in the interior substrate of insulating case successively; pressure protective device and electrode leads to client; described substrate one end connects the pressure protective device other end and is connected with the lug of electric core; described pressure protective device and electrode leads to client conducting; described pressure protective device comprises the installation portion that is formed at periphery and in abutting connection with the portion that exerts pressure of installation portion; but the pressure release portion of described installation portion by rhegma connects the described portion that exerts pressure, and it is characterized in that: offer on this pressure protective device and be used to the cylindrical groove controlling pressure release portion thickness and exert pressure portion's amount of deflection.
2. battery cap combination according to claim 1 is characterized in that: described pressure protective device middle part is provided with the connecting portion that connects the portion that exerts pressure, and described pressure protective device is by connecting portion and substrate welding.
3. battery cap combination according to claim 1 is characterized in that: the cylindrical groove center of offering on this pressure protective device overlaps with the center of the connecting portion and the portion that exerts pressure.
4. according to any described battery cap combination of claim 1-3, it is characterized in that: connect by the conducting of thermistor ring between described pressure protective device and the electrode leads to client.
5. column secondary battery; comprise shell; installing in the enclosure electric core and with the combination of the block of shell sealed electrical core; described block combination comprises insulating case and is installed in the interior substrate of insulating case successively; pressure protective device and electrode leads to client; described substrate one end connects the pressure protective device other end and is connected with the lug of electric core; described pressure protective device and electrode leads to client conducting; described pressure protective device comprises the installation portion that is formed at periphery and in abutting connection with the portion that exerts pressure of installation portion; but the pressure release portion of described installation portion by rhegma connects the described portion that exerts pressure, and it is characterized in that: offer on this pressure protective device and be used to the cylindrical groove controlling pressure release portion thickness and exert pressure portion's amount of deflection.
6. column secondary battery according to claim 5 is characterized in that: the cylindrical groove center of offering on this pressure protective device overlaps with the center of the connecting portion and the portion that exerts pressure.
7. column secondary battery according to claim 5 is characterized in that: described pressure protective device middle part is provided with the connecting portion that connects the portion that exerts pressure, and described pressure protective device is by connecting portion and substrate welding.
8. according to any described column secondary battery of claim 5-7, it is characterized in that: connect by the conducting of thermistor ring between described pressure protective device and the electrode leads to client.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202043526U CN201838638U (en) | 2010-05-20 | 2010-05-20 | Battery cap combination and cylindrical secondary battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202043526U CN201838638U (en) | 2010-05-20 | 2010-05-20 | Battery cap combination and cylindrical secondary battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201838638U true CN201838638U (en) | 2011-05-18 |
Family
ID=44008740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202043526U Expired - Lifetime CN201838638U (en) | 2010-05-20 | 2010-05-20 | Battery cap combination and cylindrical secondary battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201838638U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104106154A (en) * | 2011-11-16 | 2014-10-15 | 江森自控先进能源动力***有限责任公司 | Pressure relief element, pressure relief device and battery |
| CN109906520A (en) * | 2017-08-14 | 2019-06-18 | 株式会社Lg化学 | Press mask and the method using pressure mask by cap assembly in conjunction with electrode contact |
| CN111629548A (en) * | 2020-06-08 | 2020-09-04 | 中国电子科技集团公司第十四研究所 | Framework of satellite-borne high-integration secondary power supply |
-
2010
- 2010-05-20 CN CN2010202043526U patent/CN201838638U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104106154A (en) * | 2011-11-16 | 2014-10-15 | 江森自控先进能源动力***有限责任公司 | Pressure relief element, pressure relief device and battery |
| CN104106154B (en) * | 2011-11-16 | 2018-01-02 | 江森自控先进能源动力***有限责任公司 | Pressure relief element, pressure relief equipment and battery |
| US9871235B2 (en) | 2011-11-16 | 2018-01-16 | Johnson Controls Advanced Power Solutions Gmbh | Pressure relief element, pressure relief device and battery |
| US10741806B2 (en) | 2011-11-16 | 2020-08-11 | Clarios Advanced Solutions Gmbh | Pressure relief element, pressure relief device and battery |
| US11239528B2 (en) | 2011-11-16 | 2022-02-01 | Clarios Advanced Solutions Gmbh | Pressure relief element, pressure relief device and battery |
| US11600887B2 (en) | 2011-11-16 | 2023-03-07 | Clarios Advanced Solutions Gmbh | Pressure relief element, pressure relief device and battery |
| CN109906520A (en) * | 2017-08-14 | 2019-06-18 | 株式会社Lg化学 | Press mask and the method using pressure mask by cap assembly in conjunction with electrode contact |
| CN109906520B (en) * | 2017-08-14 | 2021-05-28 | 株式会社Lg化学 | Pressure applying mask and method of bonding cap assembly to electrode tab using the same |
| CN111629548A (en) * | 2020-06-08 | 2020-09-04 | 中国电子科技集团公司第十四研究所 | Framework of satellite-borne high-integration secondary power supply |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170614 Address after: 518119 Beek Industrial Zone, Kwai Chung street, Dapeng New District, Guangdong, Shenzhen Patentee after: SHENZHEN BAK POWER BATTERY Co.,Ltd. Address before: Kwai Chung street Beek Industrial Park in Longgang District of Shenzhen City, Guangdong province 518119 Patentee before: SHENZHEN BAK BATTERY Co.,Ltd. |
|
| PP01 | Preservation of patent right | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20191022 Granted publication date: 20110518 |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110518 |
|
| PD01 | Discharge of preservation of patent | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20200520 Granted publication date: 20110518 |