CN207353359U - A lithium battery with explosion-proof effect - Google Patents
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- CN207353359U CN207353359U CN201721346168.3U CN201721346168U CN207353359U CN 207353359 U CN207353359 U CN 207353359U CN 201721346168 U CN201721346168 U CN 201721346168U CN 207353359 U CN207353359 U CN 207353359U
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 85
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 81
- 230000000694 effects Effects 0.000 title claims abstract description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 14
- 239000012528 membrane Substances 0.000 claims abstract description 9
- 230000001681 protective effect Effects 0.000 claims description 12
- 239000011241 protective layer Substances 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 4
- 125000006850 spacer group Chemical group 0.000 claims description 3
- 239000003792 electrolyte Substances 0.000 abstract description 4
- 239000007789 gas Substances 0.000 abstract 2
- 238000004880 explosion Methods 0.000 description 18
- 230000017525 heat dissipation Effects 0.000 description 17
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 230000020169 heat generation Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 150000002641 lithium Chemical class 0.000 description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 2
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 229910002993 LiMnO2 Inorganic materials 0.000 description 1
- 238000012356 Product development Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000011255 nonaqueous electrolyte Substances 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
Description
技术领域technical field
本实用新型涉及锂电池技术领域,特别涉及一种具有防爆效果的锂电池。The utility model relates to the technical field of lithium batteries, in particular to a lithium battery with explosion-proof effect.
背景技术Background technique
锂电池是由锂金属或锂合金为负极材料、使用非水电解质溶液的电池。电池运用的反应方程式为:Li+MnO2=LiMnO2该反应为氧化还原反应放电。在以前,因为锂金属的化学性质非常活泼,对加工、保存、使用,对环境要求非常高,所以锂电池长期没有得到应用,随着现代科学的发展锂电池现在已经成为了主流。相较于传统的铅酸蓄电池,锂电池具有明显的优势,它的能量比更高、使用寿命更长、额定电压更高、自放电率更低,同时质量更轻,更节能环保,诸多优点使得锂电池被广泛应用在生活的各个角落,目前锂电池多被用于手机、数码相机、电动车等领域,锂电池的出现使得这些领域的产品得以快速发展,但是锂电池自身的缺点也限制了产品的发展,锂电池常见的缺陷如下:锂电池安全性较差,容易发生爆炸,在使用时需要专门的保护线路,以防止电池被过充电或过放电,同时锂电池的生产条件苛刻,成本较高。在日常使用中我们最常碰到的问题就是锂电池发热问题,锂电池在使用时发热量过大,容易造成烫伤,甚至引发爆炸,现有的锂电池不具有防爆的特性,在使用过程中,一旦过充就很容易导致起火爆炸事故,造成不必要的损失,威胁用户的生命财产安全。为此,我们提出一种具有防爆效果的锂电池。A lithium battery is a battery that uses lithium metal or lithium alloy as the negative electrode material and uses a non-aqueous electrolyte solution. The reaction equation used by the battery is: Li+MnO2=LiMnO2 This reaction is a redox reaction discharge. In the past, lithium batteries have not been used for a long time because the chemical properties of lithium metal are very active, and the requirements for processing, storage, and use are very high. Therefore, lithium batteries have not been used for a long time. With the development of modern science, lithium batteries have now become the mainstream. Compared with traditional lead-acid batteries, lithium batteries have obvious advantages, such as higher energy ratio, longer service life, higher rated voltage, lower self-discharge rate, lighter weight, more energy-saving and environmental protection, and many advantages Lithium batteries are widely used in every corner of life. At present, lithium batteries are mostly used in mobile phones, digital cameras, electric vehicles and other fields. The emergence of lithium batteries has enabled the rapid development of products in these fields, but the shortcomings of lithium batteries themselves also limit In terms of product development, the common defects of lithium batteries are as follows: lithium batteries are less safe and prone to explosion. When in use, special protection circuits are required to prevent the battery from being overcharged or overdischarged. At the same time, the production conditions of lithium batteries are harsh. higher cost. The most common problem we encounter in daily use is the heating problem of lithium batteries. Lithium batteries generate too much heat during use, which can easily cause burns and even cause explosions. The existing lithium batteries do not have explosion-proof characteristics. , once it is overcharged, it will easily lead to fire and explosion accidents, causing unnecessary losses and threatening the safety of users' lives and property. To this end, we propose a lithium battery with an explosion-proof effect.
实用新型内容Utility model content
本实用新型的主要目的在于提供一种具有防爆效果的锂电池,通过设有防爆装置,当锂电池内部的电解液因高温产生大量气体时,气体通过连接管流向气囊中,从而使得气囊变大,推动连接板运动从而推动倒刺向下移动,戳破防爆膜,使膨胀气体快速排泄,从而有效对锂电池防爆。通过设有防爆膜片和防爆片,防爆膜片能有效缓冲爆炸时锂电池下部产生的冲击力,使锂电池具有良好的防爆性能,而防爆片具有很高的耐蚀性和良好的韧性、塑性,能够有效抵消锂电池爆炸产生的大部分冲击力,提高了锂电池的安全性。通过设有散热风道和散热孔,散热风道和散热孔便于对锂电池工作时产生的高温进行散热,有效避免锂电池因发热量过大而导致爆炸,延长了锂电池的使用寿命,可以有效解决背景技术中的问题。The main purpose of the utility model is to provide a lithium battery with an explosion-proof effect. With an explosion-proof device, when the electrolyte inside the lithium battery generates a large amount of gas due to high temperature, the gas flows into the airbag through the connecting pipe, thereby making the airbag larger. , to push the connecting plate to move, thereby pushing the barb to move downward, puncturing the explosion-proof membrane, and allowing the expansion gas to be quickly discharged, thereby effectively preventing the explosion of the lithium battery. Through the explosion-proof diaphragm and explosion-proof sheet, the explosion-proof diaphragm can effectively buffer the impact force generated by the lower part of the lithium battery during explosion, so that the lithium battery has good explosion-proof performance, and the explosion-proof sheet has high corrosion resistance and good toughness. Plasticity, which can effectively offset most of the impact force generated by the explosion of lithium batteries and improve the safety of lithium batteries. The heat dissipation duct and the heat dissipation hole are provided to facilitate the heat dissipation of the high temperature generated when the lithium battery is working, effectively avoiding the explosion of the lithium battery due to excessive heat generation, and prolonging the service life of the lithium battery. Effectively solve the problems in the background technology.
为实现上述目的,本实用新型采取的技术方案为:In order to achieve the above object, the technical scheme that the utility model takes is:
一种具有防爆效果的锂电池,包括壳体、顶板、碳包、锂片和保护膜,所述顶板位于壳体上端,所述碳包位于壳体内部,所述保护膜位于碳包外侧,所述锂片位于保护膜两侧,所述顶板上端固定连接有防爆装置,所述防爆装置包括连接管和气囊,所述气囊位于连接管上端,且固定连接,所述气囊内部设有连接板,所述气囊下端设有倒刺,且连接板与倒刺可拆卸连接,所述倒刺下方设有防爆膜。A lithium battery with an explosion-proof effect, comprising a shell, a top plate, a carbon pack, a lithium sheet and a protective film, the top plate is located at the upper end of the shell, the carbon pack is located inside the shell, and the protective film is located outside the carbon pack, The lithium sheet is located on both sides of the protective film, and an explosion-proof device is fixedly connected to the top of the top plate. The explosion-proof device includes a connecting pipe and an air bag. The air bag is located at the upper end of the connecting pipe and is fixedly connected. A connecting plate is arranged inside the air bag , the lower end of the airbag is provided with barbs, and the connecting plate is detachably connected with the barbs, and an explosion-proof membrane is provided under the barbs.
进一步地,所述锂片两侧均设有散热风道,所述散热风道一侧设有散热孔。Further, both sides of the lithium sheet are provided with heat dissipation air ducts, and one side of the heat dissipation air duct is provided with heat dissipation holes.
进一步地,所述防爆装置一侧设有正极耳,所述防爆装置另一侧设有负极耳,所述正极耳与负极耳下端均设有密封圈。Further, a positive tab is provided on one side of the explosion-proof device, a negative tab is provided on the other side of the explosion-proof device, and sealing rings are provided at the lower ends of the positive tab and the negative tab.
进一步地,所述保护膜下端设有绝缘保护层,所述绝缘保护层下端设有防爆膜片,所述防爆膜片下端设有防爆片。Further, the lower end of the protective film is provided with an insulating protective layer, the lower end of the insulating protective layer is provided with an explosion-proof diaphragm, and the lower end of the explosion-proof diaphragm is provided with an explosion-proof sheet.
进一步地,所述壳体与顶板之间设有隔离垫。Further, an isolation pad is provided between the housing and the top plate.
与现有技术相比,本实用新型具有如下有益效果:Compared with the prior art, the utility model has the following beneficial effects:
1、通过设有防爆装置,当锂电池内部的电解液因高温产生大量气体时,气体通过连接管流向气囊中,从而使得气囊变大,推动连接板运动从而推动倒刺向下移动,戳破防爆膜,使膨胀气体快速排泄,从而有效对锂电池防爆。1. With the explosion-proof device, when the electrolyte inside the lithium battery generates a large amount of gas due to high temperature, the gas flows into the airbag through the connecting pipe, which makes the airbag bigger, and pushes the connecting plate to move, thereby pushing the barb to move downward and puncture the airbag. Explosion-proof membrane, so that the expansion gas can be quickly discharged, so as to effectively prevent the explosion of lithium batteries.
2、通过设有防爆膜片和防爆片,防爆膜片能有效缓冲爆炸时锂电池下部产生的冲击力,使锂电池具有良好的防爆性能,而防爆片具有很高的耐蚀性和良好的韧性、塑性,能够有效抵消锂电池爆炸产生的大部分冲击力,提高了锂电池的安全性。2. With the explosion-proof diaphragm and explosion-proof sheet, the explosion-proof diaphragm can effectively buffer the impact force generated by the lower part of the lithium battery during explosion, so that the lithium battery has good explosion-proof performance, and the explosion-proof sheet has high corrosion resistance and good Toughness and plasticity can effectively offset most of the impact force generated by the explosion of lithium batteries and improve the safety of lithium batteries.
3、通过设有散热风道和散热孔,散热风道和散热孔便于对锂电池工作时产生的高温进行散热,有效避免锂电池因发热量过大而导致爆炸,延长了锂电池的使用寿命。3. The heat dissipation duct and the heat dissipation hole are provided to facilitate the heat dissipation of the high temperature generated when the lithium battery is working, effectively avoiding the explosion of the lithium battery due to excessive heat generation, and prolonging the service life of the lithium battery .
附图说明Description of drawings
图1为本实用新型一种具有防爆效果的锂电池的内部结构示意图。FIG. 1 is a schematic diagram of the internal structure of a lithium battery with an explosion-proof effect according to the present invention.
图2为本实用新型一种具有防爆效果的锂电池的防爆装置结构示意图。FIG. 2 is a structural schematic diagram of an explosion-proof device for a lithium battery with an explosion-proof effect according to the present invention.
图3为本实用新型一种具有防爆效果的锂电池的整体结构示意图。Fig. 3 is a schematic diagram of the overall structure of a lithium battery with an explosion-proof effect according to the present invention.
图中:1、壳体;2、散热风道;3、散热孔;4、防爆片;5、防爆膜片;6、绝缘保护层;7、正极耳;8、防爆装置;9、负极耳;10、密封圈;11、顶板;12、隔离垫;13、碳包;14、锂片;15、气囊;16、连接板;17、倒刺;18、连接管;19、保护膜;20、防爆膜。In the figure: 1. Housing; 2. Cooling duct; 3. Cooling hole; 4. Explosion-proof plate; 5. Explosion-proof diaphragm; 6. Insulation protection layer; 7. Positive pole ear; 8. Explosion-proof device; ;10, sealing ring; 11, top plate; 12, isolation pad; 13, carbon bag; 14, lithium sheet; 15, air bag; 16, connecting plate; 17, barb; 18, connecting pipe; , Explosion-proof membrane.
具体实施方式Detailed ways
为使本实用新型实现的技术手段、创作特征、达成目的与功效易于明白了解,下面结合具体实施方式,进一步阐述本实用新型。In order to make the technical means, creative features, goals and effects achieved by the utility model easy to understand, the utility model will be further elaborated below in conjunction with specific embodiments.
如图1-3所示,一种具有防爆效果的锂电池,包括壳体1、顶板11、碳包13、锂片14和保护膜19,所述顶板11位于壳体1上端,所述碳包13位于壳体1内部,所述保护膜19位于碳包13外侧,所述锂片14位于保护膜19两侧,所述顶板11上端固定连接有防爆装置8,所述防爆装置8包括连接管18和气囊15,所述气囊15位于连接管18上端,且固定连接,所述气囊15内部设有连接板16,所述气囊15下端设有倒刺17,且连接板16与倒刺17可拆卸连接,所述倒刺17下方设有防爆膜20。As shown in Figures 1-3, a lithium battery with an explosion-proof effect includes a casing 1, a top plate 11, a carbon pack 13, a lithium sheet 14 and a protective film 19, the top plate 11 is located at the upper end of the casing 1, and the carbon The package 13 is located inside the housing 1, the protective film 19 is located outside the carbon package 13, the lithium sheet 14 is located on both sides of the protective film 19, the upper end of the top plate 11 is fixedly connected with an explosion-proof device 8, and the explosion-proof device 8 includes a connection Tube 18 and airbag 15, the airbag 15 is located at the upper end of the connecting pipe 18, and is fixedly connected, the inside of the airbag 15 is provided with a connecting plate 16, and the lower end of the airbag 15 is provided with a barb 17, and the connecting plate 16 and the barb 17 The connection is detachable, and an explosion-proof membrane 20 is provided under the barb 17 .
其中,所述锂片14两侧均设有散热风道2,所述散热风道2一侧设有散热孔3,散热风道和散热孔便于对锂电池工作时产生的高温进行散热,有效避免锂电池因发热量过大而导致爆炸,延长了锂电池的使用寿命。Wherein, both sides of the lithium sheet 14 are provided with heat dissipation air ducts 2, and one side of the heat dissipation air duct 2 is provided with heat dissipation holes 3. The heat dissipation air ducts and heat dissipation holes are convenient for dissipating the high temperature generated when the lithium battery is working, effectively Avoid the explosion of the lithium battery due to excessive heat generation, and prolong the service life of the lithium battery.
其中,所述防爆装置8一侧设有正极耳7,所述防爆装置8另一侧设有负极耳9,所述正极耳7与负极耳9下端均设有密封圈10,正极耳和负极耳便于对锂电池的使用。Wherein, one side of the explosion-proof device 8 is provided with a positive pole ear 7, and the other side of the explosion-proof device 8 is provided with a negative pole ear 9, and the lower ends of the positive pole ear 7 and the negative pole ear 9 are provided with a sealing ring 10, and the positive pole ear and the negative pole The ear is convenient for the use of the lithium battery.
其中,所述保护膜19下端设有绝缘保护层6,所述绝缘保护层6下端设有防爆膜片5,所述防爆膜片5下端设有防爆片4,防爆膜片能有效缓冲爆炸时锂电池下部产生的冲击力,使锂电池具有良好的防爆性能,而防爆片具有很高的耐蚀性和良好的韧性、塑性,能够有效抵消锂电池爆炸产生的大部分冲击力,提高了锂电池的安全性。Wherein, the lower end of the protective film 19 is provided with an insulating protective layer 6, the lower end of the insulating protective layer 6 is provided with an explosion-proof diaphragm 5, and the lower end of the explosion-proof diaphragm 5 is provided with an explosion-proof sheet 4, and the explosion-proof diaphragm can effectively buffer the explosion. The impact force generated by the lower part of the lithium battery makes the lithium battery have good explosion-proof performance, and the explosion-proof sheet has high corrosion resistance, good toughness, and plasticity, which can effectively offset most of the impact force generated by the explosion of the lithium battery and improve the lithium battery. Battery safety.
其中,所述壳体1与顶板11之间设有隔离垫12,隔离垫有效的将碳包与壳体隔离。Wherein, a spacer 12 is provided between the shell 1 and the top plate 11, and the spacer effectively isolates the carbon pack from the shell.
需要说明的是,本实用新型为一种具有防爆效果的锂电池,在使用时,通过改变锂电池的结构使得锂电池具有很好的防爆效果,通过在顶板11上端设有防爆装置8,当锂电池内部的电解液因高温产生大量气体时,气体通过连接管18流向气囊15中,从而使得气囊15变大,推动连接板16运动从而推动倒刺17向下移动,戳破防爆膜20,使膨胀气体快速排泄,从而有效对锂电池防爆。通过设有防爆膜片5和防爆片4,防爆膜片5能有效缓冲爆炸时锂电池下部产生的冲击力,使锂电池具有良好的防爆性能,而防爆片4具有很高的耐蚀性和良好的韧性、塑性,能够有效抵消锂电池爆炸产生的大部分冲击力,提高了锂电池的安全性。通过设有散热风道2和散热孔3,散热风道2和散热孔3便于对锂电池工作时产生的高温进行散热,有效避免锂电池因发热量过大而导致爆炸,延长了锂电池的使用寿命。It should be noted that the utility model is a lithium battery with an explosion-proof effect. When in use, the lithium battery has a good explosion-proof effect by changing the structure of the lithium battery. An explosion-proof device 8 is provided on the top plate 11. When the electrolyte inside the lithium battery generates a large amount of gas due to high temperature, the gas flows into the air bag 15 through the connecting pipe 18, thereby making the air bag 15 larger, pushing the connecting plate 16 to move, thereby pushing the barb 17 to move downward, and puncturing the explosion-proof membrane 20. The expansion gas is quickly discharged, thereby effectively preventing the explosion of the lithium battery. By being provided with the explosion-proof diaphragm 5 and the explosion-proof disc 4, the explosion-proof diaphragm 5 can effectively buffer the impact force produced by the lower part of the lithium battery during explosion, so that the lithium battery has good explosion-proof performance, and the explosion-proof disc 4 has high corrosion resistance and Good toughness and plasticity can effectively offset most of the impact force generated by the lithium battery explosion and improve the safety of lithium batteries. The heat dissipation air duct 2 and the heat dissipation hole 3 are provided to facilitate the heat dissipation of the high temperature generated by the lithium battery during operation, effectively avoiding the explosion of the lithium battery due to excessive heat generation, and prolonging the life of the lithium battery. service life.
以上显示和描述了本实用新型的基本原理和主要特征和本实用新型的优点。本行业的技术人员应该了解,本实用新型不受上述实施例的限制,上述实施例和说明书中描述的只是说明本实用新型的原理,在不脱离本实用新型精神和范围的前提下,本实用新型还会有各种变化和改进,这些变化和改进都落入要求保护的本实用新型范围内。本实用新型要求保护范围由所附的权利要求书及其等效物界定。The basic principles and main features of the present utility model and the advantages of the present utility model have been shown and described above. Those skilled in the art should understand that the utility model is not limited by the above-mentioned embodiments. The above-mentioned embodiments and descriptions only illustrate the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model The new model also has various changes and improvements, and these changes and improvements all fall within the scope of the claimed utility model. The scope of protection required by the utility model is defined by the appended claims and their equivalents.
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Cited By (2)
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|---|---|---|---|---|
| CN109378426A (en) * | 2018-11-22 | 2019-02-22 | 大连范特西西科技有限公司 | High-performance green battery safety explosion-proof device and method |
| CN110853929A (en) * | 2019-11-15 | 2020-02-28 | 安徽航睿电子科技有限公司 | Lithium ion capacitor |
-
2017
- 2017-10-16 CN CN201721346168.3U patent/CN207353359U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109378426A (en) * | 2018-11-22 | 2019-02-22 | 大连范特西西科技有限公司 | High-performance green battery safety explosion-proof device and method |
| CN110853929A (en) * | 2019-11-15 | 2020-02-28 | 安徽航睿电子科技有限公司 | Lithium ion capacitor |
| CN110853929B (en) * | 2019-11-15 | 2021-12-14 | 安徽航睿电子科技有限公司 | Lithium ion capacitor |
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