CN202662683U - Motive power battery top cover - Google Patents
Motive power battery top cover Download PDFInfo
- Publication number
- CN202662683U CN202662683U CN2012200467528U CN201220046752U CN202662683U CN 202662683 U CN202662683 U CN 202662683U CN 2012200467528 U CN2012200467528 U CN 2012200467528U CN 201220046752 U CN201220046752 U CN 201220046752U CN 202662683 U CN202662683 U CN 202662683U
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- CN
- China
- Prior art keywords
- coping plate
- top cover
- short circuit
- pole
- electrokinetic cell
- 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
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- Secondary Cells (AREA)
- Gas Exhaust Devices For Batteries (AREA)
- Connection Of Batteries Or Terminals (AREA)
Abstract
The utility model belongs to the technical field of a motive power battery and particularly relates to a motive power battery top cover with a safe self-destructing function. The motive power battery top cover comprises a top cover sheet, a first pole post, a second pole post, a pressure release valve and a liquid filling hole, the first pole post and the second pole post are arranged on the top cover sheet, the first pole post is in conduction connection with the top cover sheet, the second pole post is in insulated assembly with the top cover sheet, and a safe self-destructing device is also arranged on the top cover sheet. Compared with the prior art, the motive power battery top cover has the advantages that the safe self-destructing device is arranged on the top cover sheet, on the one hand, the potential safety hazard caused by overcharging when a battery cell generates accidents can be prevented, on the other hand, the energy of the accident battery cell is released through an outer short circuit, and the caused serious safety accident is avoided.
Description
Technical field
The utility model belongs to the power battery technology field, relates in particular to a kind of electrokinetic cell top cover with safety self-destruct function.
Background technology
Along with the development of modern society and the enhancing of people's environmental consciousness, increasing equipment is selected with chargeable secondary cell as power supply, such as mobile phone, notebook computer, electric tool and electric automobile etc., this provides wide space for the application of chargeable secondary cell and development.
Electric automobile and energy-accumulating power station etc. generally need to use to have jumbo electrokinetic cell as power supply.These electrokinetic cells are except having high power capacity, also should have good fail safe and long cycle life etc., just can reach the standard of use and satisfy people's demand.
In order to guarantee to a certain extent the fail safe of electrokinetic cell, generally at battery cap a relief valve is installed.When battery owing to improper charging, short circuit or be exposed to when meeting accident in the adverse circumstances such as high temperature, high-octane battery will produce a large amount of gas and temperature sharply raises, gas is washed the purpose that relief valve reaches pressure release open.Relief valve deposit the security performance that can improve to a certain extent battery, but because the energy that the battery itself that meets accident is assembled can not get discharging, making itself is exactly a hidden danger body, there is certain safety problem, if continue again after battery meets accident to overcharge, then can cause larger security incident.
In view of this, necessaryly provide a kind of electrokinetic cell top cover that overcharges and discharge the battery core internal energy that meets accident after can preventing battery to meet accident.
The utility model content
The purpose of this utility model is: for the deficiencies in the prior art, and provide a kind of electrokinetic cell top cover that overcharges and discharge the battery core internal energy that meets accident after can preventing battery to meet accident.
To achieve these goals, the technical solution adopted in the utility model is:
A kind of electrokinetic cell top cover, comprise coping plate and the first pole, the second pole and relief valve and the liquid injection hole that are arranged on the described coping plate, described the first pole be connected the coping plate conducting and connect, described the second pole and described coping plate insulation assembling, also be provided with safe self-destruction device on the described coping plate, wherein, the material of battery cap sheet is aluminium alloy or stainless steel etc.
A kind of improvement as the utility model electrokinetic cell top cover, described safe self-destruction device comprises the conducting strip that is welded on described the second pole and is positioned at described coping plate top, be positioned at conducting strip below and be welded on short circuit shell fragment on the described coping plate, one end of short circuit shell fragment be connected the coping plate conducting and connect, the other end and described coping plate weld by scolder.Wherein, the material of conducting strip is the conductive elastomers such as beryllium copper, ambrose alloy or titanium copper.Described scolder is eutectic solder, and main component is the solder of the different proportionings such as sn-bi alloy, indium bismuth alloy or indium bismuth tin gallium, and fusing point requires at 100～120 ℃.
A kind of improvement as the utility model electrokinetic cell top cover, described safe self-destruction device comprises the conducting strip that is welded on described the second pole and is positioned at described coping plate top, and being arranged on upset short circuit burst disk in the hole of described coping plate, described upset short circuit burst disk is positioned at the below of described conducting strip.The inversion air pressure of upset short circuit burst disk is 0.3～0.5MPa, and can not break under 0.7MPa air pressure, and turning height is not less than 0.5mm.
A kind of improvement as the utility model electrokinetic cell top cover, described safe self-destruction device comprises the conducting strip that is welded on described the second pole and is positioned at described coping plate top, be positioned at conducting strip below and be welded on short circuit shell fragment on the described coping plate, and be arranged on upset short circuit burst disk in the hole of described coping plate, one end of short circuit shell fragment be connected the coping plate conducting and connect, the other end and described coping plate weld by scolder, and described upset short circuit burst disk is positioned at the below of described conducting strip.
As a kind of improvement of the utility model electrokinetic cell top cover, an end of described short circuit shell fragment by weld, rivet, be spirally connected or bonding be connected the coping plate conducting and connect.
As a kind of improvement of the utility model electrokinetic cell top cover, described upset short circuit burst disk is arranged in the hole of described coping plate by laser welded seal.
As a kind of improvement of the utility model electrokinetic cell top cover, described coping plate be shaped as rectangle, circle or oval.
As a kind of improvement of the utility model electrokinetic cell top cover, described the first pole is connected on the described coping plate by welding or riveted joint conducting.
As a kind of improvement of the utility model electrokinetic cell top cover, described the second pole is assemblied on the described coping plate by the injection mo(u)lding insulation.
With respect to prior art, the utility model is by arranging safe self-destruction device at coping plate, conducting is connected with coping plate with the first pole, conducting strip and the second pole conducting are connected and fixed, one end of short circuit shell fragment is weldingly fixed on the coping plate, the other end adopts eutectic solder to be welded on the coping plate, and/or the short circuit burst disk laser welding of will overturning is fixed on the coping plate, when appearring in battery core, accident cause temperature to raise gentle voltage rise when high, when temperature is increased to the melting temperature of eutectic solder, the short circuit shell fragment is upspring and conducting strip is realized external short circuit, reaches the purpose of safety self-destruct; Or when air pressure was increased to predetermined upset burst disk pressure, rotating sheet overturn, and realized external short circuit with conducting strip, thereby reached the effect of safety self-destruct.Arranging of safe self-destruction device can prevent that on the one hand battery core from overcharging the potential safety hazard of initiation when accident occurring; Discharge accident battery core energy by external short circuit on the other hand, avoid causing larger security incident.
Description of drawings
Fig. 1 is stereogram of the present utility model;
Fig. 2 is vertical view of the present utility model;
Fig. 3 is the cutaway view of the utility model embodiment 1;
Fig. 4 is the enlarged drawing at A place among Fig. 3;
Fig. 5 is the partial enlarged drawing of the safe self-destruction device of the utility model embodiment 2;
Fig. 6 is the cutaway view of the utility model embodiment 3;
Fig. 7 is the enlarged drawing at C place among Fig. 6.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described:
Embodiment 1
Please refer to Fig. 1 and Fig. 2, a kind of electrokinetic cell top cover of the utility model, comprise coping plate 3 and the first pole 1, the second pole 2 and relief valve 4 and the liquid injection hole 5 that are arranged on the described coping plate 3, described the first pole 1 be connected coping plate 3 conductings and connect, described the second pole 2 and the 3 insulation assemblings of described coping plate also are provided with safe self-destruction device 6 on the described coping plate 3.The material of described battery cap sheet is aluminium alloy or stainless steel etc.
Wherein, described coping plate 3 be shaped as rectangle, circle or oval, described the first pole 1 is connected on the described coping plate 3 by welding or riveted joint conducting, described the second pole 2 is assemblied on the described coping plate 3 by the injection mo(u)lding insulation.
Wherein, as shown in Figure 3 and Figure 4, described safe self-destruction device 6 comprises the conducting strip 61 that is welded on described the second pole 2 and is positioned at described coping plate 3 tops, be positioned at conducting strip 61 belows and be welded on short circuit shell fragment 62 on the described coping plate 3, one end of short circuit shell fragment 62 be connected coping plate 3 conductings and connect, the other end and described coping plate 3 weld by scolder.One end of described short circuit shell fragment 62 by weld, rivet, be spirally connected or bonding be connected coping plate 3 conductings and connect.The scolder that uses is eutectic solder, and its composition is mainly and is the different proportioning solders such as sn-bi alloy, indium bismuth alloy or indium bismuth tin gallium, and fusing point requires at 100～120 ℃.Wherein, the material of described conducting strip 61 is the conductive elastomers such as beryllium copper, ambrose alloy, titanium copper.
Different from embodiment 1 is the structure of safe self-destruction device 6, as shown in Figure 5.
Described safe self-destruction device 6 comprises the conducting strip 61 that is welded on described the second pole 2 and is positioned at described coping plate 3 tops, and being arranged on upset short circuit burst disk 63 in the hole 31 of described coping plate 3, described upset short circuit burst disk 63 is positioned at the below of described conducting strip 61.The inversion air pressure of described upset short circuit burst disk 63 is 0.3～0.5MPa, and can not break under 0.7MPa air pressure, and turning height is not less than 0.5mm.Described upset short circuit burst disk 63 is arranged in the hole 31 of described coping plate 3 by laser welded seal.Wherein, the material of described conducting strip 61 is the conductive elastomers such as beryllium copper, ambrose alloy, titanium copper.
All the other repeat no more here with embodiment 1.
Different from embodiment 1 is the structure of safe self-destruction device 6, as shown in Figure 6 and Figure 7.
Described safe self-destruction device 6 comprises the conducting strip 61 that is welded on described the second pole 2 and is positioned at described coping plate 3 tops, be positioned at conducting strip 61 belows and be welded on short circuit shell fragment 62 on the described coping plate 3, and be arranged on upset short circuit burst disk 63 in the hole 31 of described coping plate 3, one end of short circuit shell fragment 62 be connected coping plate 3 conductings and connect, the other end and described coping plate 3 are by the scolder welding, and described upset short circuit burst disk 63 is positioned at the below of described conducting strip 61.
One end of short circuit shell fragment 62 be connected coping plate 3 conductings and connect, the other end and described coping plate 3 weld by scolder.One end of described short circuit shell fragment 62 by weld, rivet, be spirally connected or bonding be connected coping plate 3 conductings and connect.The scolder that uses is eutectic solder, and its composition is mainly and is the different proportioning solders such as sn-bi alloy, indium bismuth alloy or indium bismuth tin gallium, and fusing point requires at 100～120 ℃.Wherein, the material of described conducting strip 61 is the conductive elastomers such as beryllium copper, ambrose alloy, titanium copper.The inversion air pressure of described upset short circuit burst disk 63 is 0.3～0.5MPa, and can not break under 0.7MPa air pressure, and turning height is not less than 0.5mm.Described upset short circuit burst disk 63 is arranged in the hole 31 of described coping plate 3 by laser welded seal.All the other repeat no more here with embodiment 1.
Under normal circumstances, short circuit shell fragment 62, upset short circuit burst disk 63 all not be connected the conducting strip 61 that pole 2 is connected and contact; When battery core meets accident, will inevitably cause the battery core air pressure inside to raise and the temperature rising, when interior pressure reached the eversion pressure of upset short circuit burst disk 63,63 actions of upset short circuit burst disk also contacted with conducting strip 61, realize external short circuit, thereby reach the effect of safety self-destruct; Perhaps when temperature reached the melting temperature of the eutectic solder that uses when short circuit shell fragment 62 welds, 62 actions of short circuit shell fragment also contacted with conducting strip 61, realize external short circuit, thereby reach the effect of safety self-destruct.。Thereby make battery core realize external short circuit, can digest on the one hand and overcharge electric current, can discharge on the other hand hidden danger battery core energy, eliminate safe hidden trouble.
The according to the above description announcement of book and instruction, the utility model those skilled in the art can also carry out suitable change and modification to above-mentioned execution mode.Therefore, the embodiment that discloses and describe above the utility model is not limited to also should fall in the protection range of claim of the present utility model modifications and changes more of the present utility model.In addition, although used some specific terms in this specification, these terms do not consist of any restriction to the utility model just for convenience of description.
Claims (9)
1. electrokinetic cell top cover, comprise coping plate (3) and be arranged on the first pole (1), the second pole (2) and relief valve (4) and liquid injection hole (5) on the described coping plate (3), described the first pole (1) be connected coping plate (3) conducting and connect, described the second pole (2) and described coping plate (3) insulation assembling is characterized in that: also be provided with safe self-destruction device (6) on the described coping plate (3).
2. electrokinetic cell top cover according to claim 1, it is characterized in that: described safe self-destruction device (6) comprises the conducting strip (61) that is welded on described the second pole (2) upward and is positioned at described coping plate (3) top, be positioned at described conducting strip (61) below and be welded on short circuit shell fragment (62) on the described coping plate (3), one end of short circuit shell fragment (62) be connected coping plate (3) conducting and connect, the other end and described coping plate (3) weld by scolder.
3. electrokinetic cell top cover according to claim 1, it is characterized in that: described safe self-destruction device (6) comprises the conducting strip (61) that is welded on described the second pole (2) upward and is positioned at described coping plate (3) top, and being arranged on upset short circuit burst disk (63) in the hole (31) of described coping plate (3), described upset short circuit burst disk (63) is positioned at the below of described conducting strip (61).
4. electrokinetic cell top cover according to claim 1, it is characterized in that: described safe self-destruction device (6) comprises the conducting strip (61) that is welded on described the second pole (2) upward and is positioned at described coping plate (3) top, be positioned at conducting strip (61) below and be welded on short circuit shell fragment (62) on the described coping plate (3), and be arranged on upset short circuit burst disk (63) in the hole (31) of described coping plate (3), one end of short circuit shell fragment (62) be connected coping plate (3) conducting and connect, the other end and described coping plate (3) are by the scolder welding, and described upset short circuit burst disk (63) is positioned at the below of described conducting strip (61).
5. it is characterized in that according to claim 2 or 4 described electrokinetic cell top covers: an end of described short circuit shell fragment (62) by weld, rivet, be spirally connected or bonding be connected coping plate (3) conducting and connect.
6. according to claim 3 or 4 described electrokinetic cell top covers, it is characterized in that: described upset short circuit burst disk (63) is arranged in the hole (31) of described coping plate (3) by laser welded seal.
7. electrokinetic cell top cover according to claim 1 is characterized in that: described coping plate (3) be shaped as rectangle, circle or oval.
8. electrokinetic cell top cover according to claim 1 is characterized in that: described the first pole (1) is connected on the described coping plate (3) by welding or riveted joint conducting.
9. electrokinetic cell top cover according to claim 1 is characterized in that: described the second pole (2) is assemblied on the described coping plate (3) by the injection mo(u)lding insulation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200467528U CN202662683U (en) | 2012-02-14 | 2012-02-14 | Motive power battery top cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200467528U CN202662683U (en) | 2012-02-14 | 2012-02-14 | Motive power battery top cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202662683U true CN202662683U (en) | 2013-01-09 |
Family
ID=47457567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200467528U Expired - Lifetime CN202662683U (en) | 2012-02-14 | 2012-02-14 | Motive power battery top cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202662683U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050646A (en) * | 2012-12-19 | 2013-04-17 | 宁德新能源科技有限公司 | Top cover structure of power battery |
| CN105244458A (en) * | 2015-11-05 | 2016-01-13 | 天津市捷威动力工业有限公司 | Aluminum shell secondary battery |
| CN105655537A (en) * | 2016-03-24 | 2016-06-08 | 深圳市瑞德丰精密制造有限公司 | Burst and power-off protection structure for battery |
| CN107681071A (en) * | 2017-09-01 | 2018-02-09 | 河南新太行电源股份有限公司 | The battery cover board and secondary rectangular cell of the device containing current-limiting resistance |
| CN108428932A (en) * | 2018-04-18 | 2018-08-21 | 浙江谷神能源科技股份有限公司 | A kind of dual cylindrical lithium ion battery of the internal short-circuit pole with fuse protection of band |
| CN108428828A (en) * | 2018-04-18 | 2018-08-21 | 浙江谷神能源科技股份有限公司 | A kind of cover board of cylindrical lithium ion power battery |
| CN108461662A (en) * | 2018-01-19 | 2018-08-28 | 浙江谷神能源科技股份有限公司 | A kind of self protection type's lithium ion battery and its cover board |
| CN108565511A (en) * | 2018-04-18 | 2018-09-21 | 浙江谷神能源科技股份有限公司 | A kind of cylindrical lithium ion battery with dual security protection |
-
2012
- 2012-02-14 CN CN2012200467528U patent/CN202662683U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050646A (en) * | 2012-12-19 | 2013-04-17 | 宁德新能源科技有限公司 | Top cover structure of power battery |
| CN103050646B (en) * | 2012-12-19 | 2016-04-13 | 宁德新能源科技有限公司 | A kind of top cover structure of power battery |
| CN105244458A (en) * | 2015-11-05 | 2016-01-13 | 天津市捷威动力工业有限公司 | Aluminum shell secondary battery |
| CN105244458B (en) * | 2015-11-05 | 2019-05-14 | 天津市捷威动力工业有限公司 | A kind of aluminum hull secondary cell |
| CN105655537A (en) * | 2016-03-24 | 2016-06-08 | 深圳市瑞德丰精密制造有限公司 | Burst and power-off protection structure for battery |
| CN107681071A (en) * | 2017-09-01 | 2018-02-09 | 河南新太行电源股份有限公司 | The battery cover board and secondary rectangular cell of the device containing current-limiting resistance |
| CN108461662A (en) * | 2018-01-19 | 2018-08-28 | 浙江谷神能源科技股份有限公司 | A kind of self protection type's lithium ion battery and its cover board |
| CN108428932A (en) * | 2018-04-18 | 2018-08-21 | 浙江谷神能源科技股份有限公司 | A kind of dual cylindrical lithium ion battery of the internal short-circuit pole with fuse protection of band |
| CN108428828A (en) * | 2018-04-18 | 2018-08-21 | 浙江谷神能源科技股份有限公司 | A kind of cover board of cylindrical lithium ion power battery |
| CN108565511A (en) * | 2018-04-18 | 2018-09-21 | 浙江谷神能源科技股份有限公司 | A kind of cylindrical lithium ion battery with dual security protection |
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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: 20210602 Address after: No.1, Xinghui Road, Songshanhu Park, Dongguan, Guangdong 523000 Patentee after: Dongguan xinneng'an Technology Co.,Ltd. Address before: 523808, No. 1 Industrial West Road, Songshan Industrial Park, Dongguan, Guangdong Patentee before: Dongguan Amperex Technology Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130109 |