CN203218343U - Top cap for power battery with aluminum jacket - Google Patents
Top cap for power battery with aluminum jacket Download PDFInfo
- Publication number
- CN203218343U CN203218343U CN2013201353410U CN201320135341U CN203218343U CN 203218343 U CN203218343 U CN 203218343U CN 2013201353410 U CN2013201353410 U CN 2013201353410U CN 201320135341 U CN201320135341 U CN 201320135341U CN 203218343 U CN203218343 U CN 203218343U
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- Prior art keywords
- positive poles
- high temperature
- temperature resistant
- aluminum hull
- resistant resistance
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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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Abstract
The utility model belongs to the technical field of power batteries, and particularly relates to a top cap for a power battery with an aluminum jacket. The top cap comprises a top cap plate which is provided with two electrode introducing holes; the two electrode introducing holes are connected with a negative post structure and a positive post structure respectively; the positive post structure comprises a positive post and a high-temperature resisting resistor; the positive post passes through the electrode introducing holes and is in insulating connection with the top cap plate; the positive post and the top cover plate are also electrically connected with each other through the high-temperature resisting resistor. Compared with the prior art, the top cap for the power battery with the aluminum jacket has the advantages that the high-temperature resisting resistor is electrically connected with the positive post and the top cap plate, so that the positive post and the aluminum jacket can be connected, the consistency of the aluminum jacket and a positive pole in electric potential can be ensured, and the aluminum jacket can be effectively prevented from being corroded; in addition, the potential risk due to high temperature conditions in the prior art can be solved, and the battery with the aluminum jacket can be kept in high safety under extruding, nailing, over-charging and other misusing conditions.
Description
Technical field
The utility model belongs to the power battery technology field, relates in particular to a kind of aluminum hull electrokinetic cell top cover.
Background technology
Along with the development of modern society and the enhancing of people's environmental consciousness, more and more equipments is selected with lithium battery as power supply, and as mobile phone, notebook computer, electric tool and electric automobile etc., this provides wide space for the application of lithium battery and development.Wherein, employed lithium battery such as electric tool and electric automobile generally is referred to as electrokinetic cell.
The housing of aluminium material is widely used in the electrokinetic cell owing to having characteristics such as low, the in light weight and thermal diffusivity of cost is good.But because there are potential difference in current potential and the anode current potential of aluminium, can cause the aluminum hull etching problem.In order to solve the aluminum hull etching problem, must make aluminum hull and Positive Poles conducting to eliminate potential difference.If with the direct conducting of metal, because its resistance all is the milliohm rank generally, its loop current is very big when battery is short-circuited, and is prone to sparking and then causes potential safety hazard such as catch fire.
Publication number is that the Chinese utility application of CN100592566C discloses a kind of method that conductive plastics increases resistance that connects between Positive Poles and coping plate, yet experimental test shows, when electric core some abuses (as the extruding, drift bolt and overcharge etc.) under the test environment, electricity wicking surface temperature can reach more than 250 ℃, above-mentioned high temperature is enough to melt the polythene material in the conductive plastics, thereby causes the generation of secondary potential safety hazard; And polythene material itself is aging easily, in long-term use, through intensification and cooling again and again, very easily occurs ftractureing and coming off, thereby influences the stability of total; In addition, the conductive plastics that is composited with polyethylene and filler also can occur softening under the higher temperatures environment even fusing, can't recycle.
In view of this, necessaryly provide a kind of potential difference that can eliminate between aluminum hull and the Positive Poles, thereby prevent the aluminum hull corrosion, can eliminate the aluminum hull electrokinetic cell top cover of the potential safety hazard of electric core under abuse environments simultaneously again.
The utility model content
The purpose of this utility model is: at the deficiencies in the prior art, and provide a kind of potential difference that can eliminate between aluminum hull and the Positive Poles, thereby prevent the aluminum hull corrosion, can eliminate the aluminum hull electrokinetic cell top cover of the potential safety hazard of electric core under abuse environments simultaneously again.
In order to achieve the above object, the utility model adopts following technical scheme: a kind of aluminum hull electrokinetic cell top cover, comprise coping plate, described coping plate is provided with two electrodes and introduces the hole, and two described electrodes are introduced the hole and are connected with negative pole pole structure and Positive Poles structure respectively, described Positive Poles structure comprises Positive Poles and high temperature resistant resistance, described Positive Poles is passed electrode and is introduced the described coping plate insulation of Kong Bingyu connection, and described Positive Poles and described coping plate also are electrically connected by described high temperature resistant resistance.Wherein, the resistance of high temperature resistant resistance is 10 ~ 1000 ohm, the high temperature resistant resistance of resistance in this scope can play Positive Poles and aluminum hull conducting, assurance aluminum hull and the positive consistent effect of electrode potential of realizing, even when Positive Poles and aluminum hull are short-circuited, also be unlikely to produce big electric current, thereby spark phenomenon can not appear, to guarantee the safety of electrokinetic cell.
Wherein, the highest bearing temperature of described high temperature resistant resistance is higher than the electric wicking surface temperature under the Generally Recognized as safe test condition greater than 600 ℃ to guarantee its temperature tolerance.And the resistance of described high temperature resistant resistance is 100-1000 ohm.By selecting the bigger resistance of resistance for use, can reduce the resistance volume on the one hand; On the other hand, under abuse environments, electric core voltage is relatively stable, and bigger resistance heating amount is relatively low, and electric wicking surface temperature rise is also relatively low, and electric core security performance is better.But, when the resistance value of high temperature resistant resistance surpasses 1000 ohm, again can be too big because of resistance, and influence the conducting of Positive Poles and aluminum hull.And when the resistance of high temperature resistant resistance too hour, its loop current is very big when battery is short-circuited, and is prone to sparking and then causes potential safety hazard such as catch fire.
As a kind of improvement of the utility model aluminum hull electrokinetic cell with top cover, described high temperature resistant resistance is set to conductivity ceramics formula high temperature resistant resistance or carborundum formula high temperature resistant resistance.Be preferably conductivity ceramics formula high temperature resistant resistance, because carbofrax material has advantages such as stable chemical performance, conductive coefficient height and thermal coefficient of expansion are little, in addition, carborundum still is a kind of favorable conductive material.Adopt carborundum as high temperature resistant resistance, can satisfy the requirement of conductivity and heat-resisting quantity preferably, its good heat-conducting can in time distribute unnecessary heat, prevent the potential safety hazard that heat accumulation causes, the thermal coefficient of expansion that it is less and stable chemical properties also can recycle under abuse environments for a long time even can guarantee carborundum.By selecting carborundum ceramic materials such as (SIC) for use, can enlarge high temperature resistant resistance resistance range of choice, overcome the easily problem of aging, the simultaneously long-term cycle performance difference of structural instability of conductive plastic material simultaneously.
As a kind of improvement of the utility model aluminum hull electrokinetic cell with top cover, described high temperature resistant resistance is circulus and is nested on the described Positive Poles.The high temperature resistant resistance of circulus can play positioning action to Positive Poles, and the while also can increase the contact area with Positive Poles, reduces contact resistance.
With a kind of improvement of top cover, described high temperature resistant resistance is by riveting, weld, be spirally connected or key being connected and fixed on described Positive Poles as the utility model aluminum hull electrokinetic cell.The connected mode of plurality of optional can be used in the electric core of coupling different size, and is practical.The effect of jump ring is fixedly high temperature resistant resistance.
With a kind of improvement of top cover, between the lower surface of the bottom of described Positive Poles and described coping plate, be provided with the high-temperature insulation sealing ring as the utility model aluminum hull electrokinetic cell.The high-temperature insulation sealing ring can prevent that Positive Poles from contacting with coping plate, also can guarantee the sealing property of electric core simultaneously.The high-temperature insulation sealing ring can adopt resistance to elevated temperatures good insulation ceramic material.
As a kind of improvement of the utility model aluminum hull electrokinetic cell with top cover, be welded with conducting strip on the described Positive Poles.Because the employing welding manner, the contact resistance between Positive Poles and the external conducting strip is littler, too big gap can not occur simultaneously in electric core intensification and temperature-fall period and change, and contact resistance is more stable.
As a kind of improvement of the utility model aluminum hull electrokinetic cell with top cover, described high temperature resistant resistance is arranged between the lower surface of the bottom of described Positive Poles and described coping plate, also is provided with the high-temperature insulation sealing ring between the middle part of described Positive Poles and the described coping plate.That is to say that the position of high temperature resistant resistance and high-temperature insulation sealing ring can exchange.
With respect to prior art, the utility model has been realized Positive Poles and aluminum hull conducting on the one hand by be electrically connected high temperature resistant resistance between Positive Poles and coping plate, guarantees that aluminum hull is consistent with positive electrode potential, can effectively prevent the aluminum hull corrosion; Solve the potential safety hazard of prior art under hot conditions on the other hand, also had good security performance even make aluminum-shell battery at extruding, drift bolt and overcharge etc. to use under the abuse conditions.In addition, because high temperature resistant resistance of the present utility model has suitable resistance value, when Positive Poles and aluminum hull are short-circuited, are unlikely to produce big electric current, thereby spark phenomenon can not occur, further guaranteed the security performance of electrokinetic cell.
Description of drawings
Fig. 1 is the cutaway view that the utility model aluminum hull electrokinetic cell is used top cover.
Fig. 2 is the enlarged drawing of Positive Poles structure division in the embodiment 1.
Fig. 3 is the enlarged drawing of Positive Poles structure division in the embodiment 2.
Fig. 4 is the enlarged drawing of Positive Poles structure division in the embodiment 3.
Fig. 5 is the enlarged drawing of Positive Poles structure division in the embodiment 4.
Fig. 6 is the enlarged drawing of Positive Poles structure division in the embodiment 5.
Fig. 7 is the enlarged drawing of Positive Poles structure division in the embodiment 6.
Fig. 8 is the vertical view that the aluminum hull electrokinetic cell is used top cover in the embodiment 7.
Wherein, 1-negative pole pole structure; The 2-coping plate; 3-Positive Poles structure; The 4-conducting strip; The 31-Positive Poles; The 32-high temperature resistant resistance; 33-high-temperature insulation sealing ring; The 34-jump ring; The 35-pad.
Embodiment
Embodiment 1:As shown in Figure 1, a kind of aluminum hull electrokinetic cell top cover that this embodiment provides, comprise coping plate 2, its material is aluminium, coping plate 2 is provided with two electrodes and introduces the hole, and two electrodes are introduced the hole and are connected with negative pole pole structure 1 and Positive Poles structure 3 respectively, wherein, as shown in Figure 2, Positive Poles structure 3 comprises Positive Poles 31 and high temperature resistant resistance 32, and Positive Poles 31 is passed electrode and introduced the 2 insulation connections of Kong Bingyu coping plate, Positive Poles 31 and coping plate 2 also are electrically connected by high temperature resistant resistance 32, the material of high temperature resistant resistance 32 is carborundum, and its resistance is 10 ohm, and its highest bearing temperature is greater than 600 ℃.High temperature resistant resistance 32 is circulus and is nested on the Positive Poles 31.
Embodiment 2:Different with embodiment 1 is, the resistance of high temperature resistant resistance 32 is 50 ohm, and, as shown in Figure 3, between the lower surface of the bottom of Positive Poles 31 and coping plate 2, also be provided with high-temperature insulation sealing ring 33.
Other structure is identical with embodiment 1, repeats no more here.
Embodiment 3:Different with embodiment 1 is, the resistance of high temperature resistant resistance 32 is 100 ohm, and, as shown in Figure 4, between the lower surface of the bottom of Positive Poles 31 and coping plate 2, also be provided with high-temperature insulation sealing ring 33, and be provided with jump ring 34 between Positive Poles 31 and the high temperature resistant resistance 32, realize the firm connection of the two by the key connection of jump ring 34.
Other structure is identical with embodiment 1, repeats no more here.
Embodiment 4:Different with embodiment 1 is, the resistance of high temperature resistant resistance 32 is 500 ohm, and, as shown in Figure 5, between the lower surface of the bottom of Positive Poles 31 and coping plate 2, also be provided with high-temperature insulation sealing ring 33, and Positive Poles 31 is connected by riveted joint with high temperature resistant resistance 32.
Other structure is identical with embodiment 1, repeats no more here.
Embodiment 5:Different with embodiment 1 is, the resistance of high temperature resistant resistance 32 is 1000 ohm, and, as shown in Figure 6, between the lower surface of the bottom of Positive Poles 31 and coping plate 2, also be provided with high-temperature insulation sealing ring 33, and Positive Poles 31 is connected by being spirally connected with high temperature resistant resistance 32.
Other structure is identical with embodiment 1, repeats no more here.
Embodiment 6:Different with embodiment 1 is, the resistance of high temperature resistant resistance 32 is 500 ohm, and, as shown in Figure 7, between the lower surface of the bottom of Positive Poles 31 and coping plate 2, also be provided with high-temperature insulation sealing ring 33, and Positive Poles 31 and high temperature resistant resistance 32 are formed with pad 35 by being welded to connect after the welding.
Other structure is identical with embodiment 1, repeats no more here.
Embodiment 7:Different with embodiment 1 is, the material of high temperature resistant resistance 32 is conductivity ceramics, and its resistance is 500 ohm, between the lower surface of the bottom of Positive Poles 31 and coping plate 2, also be provided with high-temperature insulation sealing ring 33, and, as shown in Figure 8, be welded with conducting strip 4 on the Positive Poles 31.
Other structure is identical with embodiment 1, repeats no more here.
Embodiment 8:Different with embodiment 1 is, the material of high temperature resistant resistance 32 is conductivity ceramics, its resistance is 500 ohm, and, high temperature resistant resistance 32 is arranged between the lower surface of the bottom of Positive Poles 31 and coping plate 2, also is provided with high-temperature insulation sealing ring 33 between the middle part of Positive Poles 31 and the coping plate 2.
Other structure is identical with embodiment 1, repeats no more here.
Respectively take out 3 from the electrokinetic cell of embodiment 1 to 8, and individual battery is carried out the drift bolt test by United States advanced battery alliance (USABC) standard, monitor the battery surface temperature of each embodiment and observe battery status, the gained result is as shown in table 1.
Table 1: the drift bolt test result of the electrokinetic cell of embodiment 1 to 8.
From the drift bolt test result (table 1) of embodiment 1 to 8 as can be seen: after adopting cap structure of the present utility model, the electrokinetic cell surface temperature is lower and change little, and all can improve the security performance of electrokinetic cell greatly smoothly by the drift bolt test.
This shows that the utility model has been realized Positive Poles 31 and aluminum hull conducting on the one hand by be electrically connected high temperature resistant resistance 32 between Positive Poles 31 and coping plate 2, guarantee that aluminum hull is consistent with positive electrode potential, can effectively prevent the aluminum hull corrosion; Solve the potential safety hazard of prior art under hot conditions on the other hand, also had good security performance even make aluminum-shell battery at extruding, drift bolt and overcharge etc. to use under the abuse conditions.In addition, because high temperature resistant resistance 32 of the present utility model has suitable resistance value, when Positive Poles 31 and aluminum hull are short-circuited, are unlikely producing big electric current, thereby spark phenomenon can occur, further guaranteed the security performance of electrokinetic cell.
The announcement of book and instruction according to the above description, 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 constitute any restriction to the utility model just for convenience of description.
Claims (7)
1. aluminum hull electrokinetic cell top cover, comprise coping plate (2), described coping plate (2) is provided with two electrodes and introduces the hole, and two described electrodes are introduced the hole and are connected with negative pole pole structure (1) and Positive Poles structure (3) respectively, it is characterized in that: described Positive Poles structure (3) comprises Positive Poles (31) and high temperature resistant resistance (32), described Positive Poles (31) is passed electrode and is introduced the described coping plate of Kong Bingyu (2) insulation connection, and described Positive Poles (31) and described coping plate (2) also are electrically connected by described high temperature resistant resistance (32).
2. aluminum hull electrokinetic cell top cover according to claim 1, it is characterized in that: described high temperature resistant resistance (32) is set to conductivity ceramics formula high temperature resistant resistance or carborundum formula high temperature resistant resistance.
3. aluminum hull electrokinetic cell top cover according to claim 1 is characterized in that: described high temperature resistant resistance (32) is for circulus and be nested on the described Positive Poles (31).
4. aluminum hull electrokinetic cell top cover according to claim 1 is characterized in that: described high temperature resistant resistance (32) is by riveting, weld, be spirally connected or key being connected and fixed on described Positive Poles (31).
5. aluminum hull electrokinetic cell top cover according to claim 1 is characterized in that: be provided with high-temperature insulation sealing ring (33) between the lower surface of the bottom of described Positive Poles (31) and described coping plate (2).
6. aluminum hull electrokinetic cell top cover according to claim 1 is characterized in that: be welded with conducting strip (4) on the described Positive Poles (31).
7. aluminum hull electrokinetic cell top cover according to claim 1, it is characterized in that: described high temperature resistant resistance (32) is arranged between the lower surface of the bottom of described Positive Poles (31) and described coping plate (2), also is provided with high-temperature insulation sealing ring (33) between the middle part of described Positive Poles (31) and the described coping plate (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201353410U CN203218343U (en) | 2013-03-25 | 2013-03-25 | Top cap for power battery with aluminum jacket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013201353410U CN203218343U (en) | 2013-03-25 | 2013-03-25 | Top cap for power battery with aluminum jacket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203218343U true CN203218343U (en) | 2013-09-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013201353410U Expired - Lifetime CN203218343U (en) | 2013-03-25 | 2013-03-25 | Top cap for power battery with aluminum jacket |
Country Status (1)
| Country | Link |
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| CN (1) | CN203218343U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105514518A (en) * | 2015-12-26 | 2016-04-20 | 浙江南都电源动力股份有限公司 | Method for repairing corrosion in shell of aluminum shell lithium ion battery |
| CN106128667A (en) * | 2016-08-10 | 2016-11-16 | 东莞永蓝电子科技有限公司 | Electrokinetic cell top cover combined resistance |
| CN106847551A (en) * | 2015-12-05 | 2017-06-13 | 佛山市欣源电子股份有限公司 | A kind of cover plate of ultracapacitor |
| CN108198966A (en) * | 2017-12-01 | 2018-06-22 | 力神动力电池系统有限公司 | A kind of battery cover board with novel pole sealing structure |
| CN109065825A (en) * | 2018-07-27 | 2018-12-21 | 深圳市瑞德丰精密制造有限公司 | The moulding process of Copper-Aluminum compound pole block |
| US10319960B2 (en) | 2015-01-12 | 2019-06-11 | Ningde Amperex Technology Limited | Cap assembly of power battery |
| CN114639926A (en) * | 2022-03-31 | 2022-06-17 | 中创新航科技股份有限公司 | Battery and method for assembling battery |
-
2013
- 2013-03-25 CN CN2013201353410U patent/CN203218343U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10319960B2 (en) | 2015-01-12 | 2019-06-11 | Ningde Amperex Technology Limited | Cap assembly of power battery |
| US11276896B2 (en) | 2015-01-12 | 2022-03-15 | Ningde Amperex Technology Limit Ed | Cap assembly of power battery |
| CN106847551A (en) * | 2015-12-05 | 2017-06-13 | 佛山市欣源电子股份有限公司 | A kind of cover plate of ultracapacitor |
| CN105514518A (en) * | 2015-12-26 | 2016-04-20 | 浙江南都电源动力股份有限公司 | Method for repairing corrosion in shell of aluminum shell lithium ion battery |
| CN106128667A (en) * | 2016-08-10 | 2016-11-16 | 东莞永蓝电子科技有限公司 | Electrokinetic cell top cover combined resistance |
| CN108198966A (en) * | 2017-12-01 | 2018-06-22 | 力神动力电池系统有限公司 | A kind of battery cover board with novel pole sealing structure |
| CN109065825A (en) * | 2018-07-27 | 2018-12-21 | 深圳市瑞德丰精密制造有限公司 | The moulding process of Copper-Aluminum compound pole block |
| CN114639926A (en) * | 2022-03-31 | 2022-06-17 | 中创新航科技股份有限公司 | Battery and method for assembling battery |
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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 |
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. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130925 |
|
| CX01 | Expiry of patent term |