WO2018098900A1 - 一种防爆电池以及电池装置 - Google Patents

一种防爆电池以及电池装置 Download PDF

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Publication number
WO2018098900A1
WO2018098900A1 PCT/CN2017/072398 CN2017072398W WO2018098900A1 WO 2018098900 A1 WO2018098900 A1 WO 2018098900A1 CN 2017072398 W CN2017072398 W CN 2017072398W WO 2018098900 A1 WO2018098900 A1 WO 2018098900A1
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explosion
battery
proof
packaging film
outer packaging
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French (fr)
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刘毅
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Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
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Yulong Computer Telecommunication Scientific Shenzhen Co Ltd
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/342—Non-re-sealable arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/30—Batteries in portable systems, e.g. mobile phone, laptop
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/105—Pouches or flexible bags
    • 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

Definitions

  • the present invention relates to the field of mobile terminal technologies, and in particular, to an explosion-proof battery and a battery device.
  • mobile terminals such as mobile phones, PADs, and wearable smart electronic devices have become more and more widely used in people's lives, and have become popular with the public.
  • mobile terminals require a battery to power them to ensure that they can be portable when there is no external power source.
  • a lithium battery may be composed of a battery protection board and a battery core, wherein the battery core may further include a core functional portion (bare battery) and an outer packaging film, and the core functional portion is encapsulated in the outer packaging film.
  • the battery core will continuously expand during use, and when the expansion of the battery core is not controlled, a battery explosion accident often occurs.
  • the battery protection board added to the lithium battery end can control the charging and discharging process of the lithium battery, and can control the battery core to expand to some extent without excessive deterioration, the battery protection board is It is impossible to make an effective judgment on the expansion of the battery.
  • the surge problem of the lithium battery during the charging process, the influence of the electric fast transient pulse group, etc. may cause the battery core.
  • the deterioration of the expansion makes it impossible to effectively reduce the probability of occurrence of a battery explosion accident.
  • the embodiment of the invention provides an explosion-proof battery and a battery device, which can be used to release the explosion-proof groove to release the pressure when the internal pressure of the outer packaging film is excessively expanded, so that the pressure inside the battery core is released and prevented.
  • the battery cell's over-expansion causes the battery to explode.
  • the first aspect of the present invention provides an explosion-proof battery
  • the explosion-proof battery includes a battery core
  • the battery core includes a bare battery core and an outer packaging film
  • the bare battery core is encapsulated in the outer packaging film
  • the outer packaging film is provided with an explosion-proof groove, and the explosion-proof groove is used to open the pressure relief when the internal pressure of the outer packaging film is greater than the preset safety threshold.
  • the outer packaging film and the explosion-proof groove are integrated, and the thickness of the explosion-proof groove is smaller than the thickness of the outer packaging film.
  • the thickness of the explosion-proof groove is positively correlated with the preset safety threshold.
  • the outer packaging film is provided with an opening structure adapted to the explosion-proof groove, and the explosion-proof groove is covered by a preset manner. On the opening structure.
  • the explosion-proof groove includes one of a linear structure, a curved structure, and a polygonal structure.
  • a second aspect of the present invention provides a battery device, wherein the device comprises a battery compartment, and the interior of the battery compartment is provided with an explosion-proof battery as provided by the first aspect of the invention, and the battery compartment is a closed structure.
  • the battery compartment further includes a battery connector for connecting the explosion-proof battery to the main board.
  • the battery core may include a bare battery core and an outer packaging film, wherein the bare battery core may be packaged in the outer packaging film, and the outer packaging film is provided with an explosion-proof groove, and the battery is used in the battery containing the battery core.
  • the internal pressure of the outer packaging film is greater than the preset safety threshold, the internal pressure of the explosion-proof groove In the following, the pressure inside the cell will be released, which can effectively prevent the battery cell from overexpanding and exploding.
  • FIG. 1 is a schematic structural view of a battery cell
  • FIG. 2 is a schematic structural view of an explosion-proof battery in an embodiment of the present invention.
  • the embodiment of the invention provides an explosion-proof battery and a battery device, which can be used to release the explosion-proof groove to release the pressure when the internal pressure of the outer packaging film is excessively expanded, so that the pressure inside the battery core is released and prevented.
  • the battery cell's over-expansion causes the battery to explode.
  • an embodiment of the explosion-proof battery in the embodiment of the present invention includes:
  • the explosion-proof battery 3 may include a battery core 1.
  • the battery core 1 may include a bare battery core 11 and an outer packaging film 12, and the bare battery core 11 may be packaged in the outer packaging film 12;
  • the outer packaging film 12 is provided with an explosion-proof groove 13 for the inside of the outer packaging film 12 When the pressure is greater than the preset safety threshold, the pressure relief is turned on.
  • the outer layer of the bare cell 11 is provided with an outer package film 12 , wherein the bare cell 11 may include a positive electrode 111 , a separator 112 , a negative electrode 113 , and a positive electrode 111 which are sequentially stacked.
  • the negative electrode 113 can be connected to the negative electrode tab 114
  • the negative electrode tab 115 can be connected to the negative electrode tab 115.
  • the edges of the positive electrode tab 114 and the negative electrode tab 115 are respectively provided with an insulating sheet 116, and at the same time, the bare cell 11 is packaged in the outer packaging film 12.
  • the electrolyte can be poured during the process so that the cell 1 is used in the explosion-proof battery 3.
  • the positive electrode 111 may be, for example, LiCoO 2
  • the negative electrode 113 may be, for example, graphite
  • the separator 112 may be, for example, polypropylene or polyethylene
  • the positive electrode tab 114 may be, for example, an aluminum sheet
  • the negative electrode tab 115 may be, for example, a nickel sheet.
  • the insulating sheet 116 may be, for example, polypropylene PP
  • the electrolyte may be, for example, LiPF 6
  • the outer wrapping film 12 may be, for example, an aluminum plastic film.
  • An explosion-proof groove 121 may be provided.
  • the explosion-proof groove 121 will be torn under the action of internal pressure, thereby making it possible to The generated internal pressure is released to achieve the purpose of pressure relief.
  • the design of the battery core 1 does not increase the product cost and is easy to implement.
  • the preset safety threshold in this embodiment can be obtained by performing safety test on the explosion-proof battery 3.
  • the explosion-proof slot 121 should be compatible with the safety test result.
  • the preset safety threshold can be set. Set to 9N, for the actual design of the explosion-proof groove 121, once the internal pressure of the outer packaging film 12 is greater than 9N due to expansion of the battery element 1, it should be ensured that the explosion-proof groove 121 will be torn under the internal pressure.
  • the explosion-proof groove 121 will remain in the original state to prevent the electrolyte from flowing out to cause unnecessary damage.
  • the preset security threshold in this embodiment should be set according to actual conditions, and this embodiment is merely an example.
  • the explosion-proof battery 121 in the embodiment of the present invention, the explosion-proof slot 121 It may have a different structural relationship with the outer packaging film 12, please refer to FIG. 2, which are respectively described below:
  • the outer packaging film 12 and the explosion-proof groove 121 can be an integrated structure:
  • the outer packaging film 12 and the explosion-proof groove 121 may be of a unitary structure, and the thickness of the explosion-proof groove 121 may be smaller than the thickness of the outer packaging film 12.
  • the explosion-proof groove 121 may be a part of the outer packaging film 12, but in order to facilitate the explosion-proof groove 121 to be torn under the internal pressure of the outer packaging film 12, the explosion-proof groove
  • the thickness of 121 may be less than the thickness of the overwrap film 12.
  • the thickness of the explosion-proof groove 121 can be specifically set according to the safety test described above, which is not limited herein.
  • the thickness of the explosion-proof slot 121 can be positively correlated with the preset safety threshold. That is, the larger the preset safety threshold is, the larger the thickness of the explosion-proof slot 121 is, so that it can be adapted to different battery requirements and has flexibility and variability.
  • the outer packaging film 12 and the explosion-proof groove 121 may be a non-integrated structure:
  • the outer packaging film 12 is provided with an opening structure adapted to the explosion-proof groove 121, and the explosion-proof groove 121 is covered on the opening structure by a predetermined manner.
  • the outer packaging film 12 and the explosion-proof groove 121 may not be an integral structure, and the outer packaging film 12 may be provided with an opening structure adapted to the explosion-proof groove 121, wherein the size of the explosion-proof groove 121 may be equal to or larger than the opening structure.
  • the size of the explosion-proof groove 121 can cover the opening structure, and the outer packaging film 12 can be sealed to prevent the electrolyte from flowing out.
  • the explosion-proof groove 121 may be covered on the opening structure of the outer packaging film 12 in a preset manner, that is, the connection manner of the explosion-proof groove and the outer packaging film 12, such as bonding or welding.
  • the preset manner in the embodiment may be other, as long as the explosion-proof slot 121 can be sealed to the outer packaging film 12, specifically not here. Make a limit.
  • the explosion-proof groove 121 can be opened in two ways for pressure relief: 1. When the internal pressure of the outer packaging film 12 is greater than the preset safety threshold, the joint between the explosion-proof groove 121 and the outer packaging film 12 will be cracked. Therefore, the explosion-proof groove 121 can be opened for pressure relief; 2. If the connection between the explosion-proof groove 121 and the outer packaging film 12 is relatively tight, the pressure of the explosion-proof groove 121 can be designed to be less than or equal to a preset safety threshold, then the outer packaging film When the internal pressure of 12 is greater than the preset safety threshold, the explosion-proof groove 121 is broken due to the inability to withstand a large pressure, thereby achieving the purpose of pressure relief. Need to explain is the upper In the two ways, the design of the explosion-proof slot 121 should be compatible with the safety test results of the explosion-proof battery 3 to achieve better results.
  • the explosion-proof groove 121 may have a different shape structure, and may include one of a linear structure, a curved structure, and a polygonal structure. Specifically, if the explosion-proof groove 121 has a linear structure, that is, the outer packaging film 121 may have a linear groove such as one or more; if the explosion-proof groove 121 has a curved structure, the outer packaging film 121 may have an arc-shaped groove, for example It may be, for example, a circle or an ellipse; if the explosion-proof groove 121 is a polygonal structure, that is, the overwrap film 121 may be, for example, a triangle.
  • the explosion-proof groove 121 and the outer packaging film 12 may have the same material structure or may not be the same material structure, which is not limited herein.
  • an embodiment of a battery device in an embodiment of the present invention includes:
  • the battery device may include a battery compartment 2, and the inside of the battery compartment 2 is provided with an explosion-proof battery 3, wherein the battery compartment 2 is a closed structure.
  • the explosion-proof battery 3 including the battery core 1 can be applied to the mobile terminal.
  • the explosion-proof groove 121 will open the pressure relief under the action of the internal pressure. Then, the electrolyte originally filled in the battery cell 1 will partially flow out through the explosion-proof groove 121, and the leaked electrolyte will cause damage to other components of the mobile terminal.
  • the explosion-proof battery A battery compartment 2 can also be provided.
  • the battery compartment 2 is a closed structure, and the battery cell 1 can be placed inside the battery compartment 2, that is, the explosion-proof battery 3 including the battery cell 1 can be disposed inside the battery compartment 2 to be explosion-proof.
  • the battery 3 is isolated from other components of the mobile terminal. Therefore, with the above structure, after the explosion-proof groove 121 is opened and released, the electrolyte flowing out of the battery cell 1 will flow out into the battery compartment 2 without entering other modules of the mobile terminal, thereby causing damage to other modules. At the same time, when the battery device is repaired, only the explosion-proof battery 3 is replaced, and the discharged electrolyte is processed, so that the product can be restored to work, which is beneficial to reduce user losses.
  • the battery compartment 2 may further include a battery connector 21, which may be used to connect the explosion-proof battery 3 including the battery cell 1 with the main board 4 of the mobile terminal, thereby Powering the motherboard 4 to make the mobile terminal work normally.
  • the main board 4 of the mobile terminal and the main small board 5 can be connected through the main small board connector 6 to achieve the corresponding work purpose.
  • the explosion-proof battery 3 in this embodiment may include a battery protection board or may not include a battery protection board, which is not limited herein.
  • the present invention can not only effectively prevent the risk of explosion of the explosion-proof battery 3 due to excessive expansion of the battery core 1, but also achieve the corresponding effect without increasing the product cost, and at the same time, facilitate the maintenance of the explosion-proof device of the battery. Reduce user losses.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Mounting, Suspending (AREA)
  • Gas Exhaust Devices For Batteries (AREA)

Abstract

本发明实施例公开了一种防爆电池，用于电芯发生膨胀导致外包装膜的内部压力过大时，可以开启防爆槽进行泄压，使得电芯内部的压力得到释放，防止了电池的电芯发生过度膨胀而导致电池爆炸的风险。该防爆电池包括电芯，其中，电芯包括裸电芯和外包装膜，裸电芯封装于外包装膜中，外包装膜上设有防爆槽，防爆槽用于当所述外包装膜的内部压力大于预设安全门限时，开启泄压。本发明实施例还提供了一种电池装置，该电池装置可以对防爆电池中的电解液进行隔离处理。

Description

一种防爆电池以及电池装置
本申请要求于2016年11月29日提交中国专利局、申请号为201611073840.6、发明名称为“一种防爆电池以及电池装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及移动终端技术领域，尤其涉及一种防爆电池以及电池装置。
背景技术
随着电子技术的发展，手机、PAD、可穿戴智能电子设备等移动终端在人们的生活中越来越得到广泛的应用，成为大众的随身携带之物。众所周知，移动终端需要电池对其供电，以保证在无外接电源时可以便携地进行工作。
目前，由于锂电池具有较佳的充放电性能和环保性，现有移动终端中的电池以锂电池应用最为广泛。一般来说，锂电池可以由电池保护板和电芯构成，其中，电芯又可以包括核心功能部分(裸电芯)和外包装膜，核心功能部分封装于外包装膜中。
众所周知，随着锂电池不断的充放电过程，电芯在使用过程中会不断地膨胀，而当电芯的膨胀不受控制时，往往会发生电池爆炸事故。在实际应用中，虽然锂电池端加有的电池保护板可以对锂电池的充放电过程进行控制，并可以在一定程度上控制电芯在使用中不会过度劣化而发生膨胀，但电池保护板并不能对电池的膨胀情况做出有效的判断，同时，由于一些劣质充电器的使用，锂电池在充电过程中出现的浪涌问题、电快速瞬变脉冲群等问题的影响，都可能导致电芯的劣化膨胀，从而无法有效地降低电池爆炸事故的发生机率。然而，现实生活中出现的电池爆炸等事故，不仅给用户的生命和财产带来了一定程度的损失，也使得用户在移动终端的使用过程中带有一定的忧患意识，不利于用户体验的提高，尤其当下各种快充技术的应用，使得部分移动终端更是取消了电池保护板，则更是增加了电池发生劣化膨胀的概率，进而增大了锂电池发生爆炸事故的机率。
发明内容
本发明实施例提供了一种防爆电池以及电池装置，用于当电芯发生膨胀导致外包装膜的内部压力过大时，可以开启防爆槽进行泄压，使得电芯内部的压力得到释放，防止了电池的电芯发生过度膨胀而导致电池爆炸的风险。
有鉴于此，本发明第一方面提供一种防爆电池，该防爆电池包括电芯，电芯包括裸电芯和外包装膜，裸电芯封装于外包装膜中，其中，
外包装膜上设有防爆槽，防爆槽用于当外包装膜的内部压力大于预设安全门限时，开启泄压。
结合本发明实施例的第一方面，在本发明实施例的第一方面的第一种实施方式中，外包装膜与防爆槽为一体结构，防爆槽的厚度小于外包装膜的厚度。
结合本发明实施例的第一方面的第一种实施方式，在本发明实施例的第一方面的第二种实施方式中，防爆槽的厚度与预设安全门限呈正相关。
结合本发明实施例的第一方面，在本发明实施例的第一方面的第三种实施方式中，外包装膜上设有适配于防爆槽的开口结构，防爆槽通过预设方式覆盖于开口结构上。
结合本发明实施例的第一方面，本发明实施例的第一方面的第一种实施方式至第三种实施方式中的任意一种，在本发明实施例的第一方面的第四种实施方式中，防爆槽包括直线结构、曲线结构、多边结构中的一种。
本发明第二方面提供一种电池装置，其中，该装置包括电池仓，电池仓的内部设有如本发明第一方面提供的防爆电池，电池仓为封闭结构。
结合本发明实施例的第二方面，在本发明实施例的第二方面的第一种实施方式中，电池仓还包括电池连接器，电池连接器用于将防爆电池与主板连接。
从以上技术方案可以看出，本发明实施例具有以下优点：
本实施例中，电芯可以包括裸电芯和外包装膜，其中，裸电芯可以封装于外包装膜中，且外包装膜上设有防爆槽，则在含有该电芯的电池的使用过程中，当外包装膜的内部压力大于预设安全门限时，防爆槽在内部压力的作 用下，将会开启对电芯内部的压力进行释放，从而可以有效防止电池的电芯发生过度膨胀而爆炸的风险。
附图说明
图1为电芯的结构示意图；
图2本发明实施例中防爆电池的结构示意图。
具体实施方式
本发明实施例提供了一种防爆电池以及电池装置，用于当电芯发生膨胀导致外包装膜的内部压力过大时，可以开启防爆槽进行泄压，使得电芯内部的压力得到释放，防止了电池的电芯发生过度膨胀而导致电池爆炸的风险。
为了使本技术领域的人员更好地理解本发明方案，下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分的实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都应当属于本发明保护的范围。
本发明的说明书和权利要求书及上述附图中的术语“第一”、“第二”、“第三”“第四”等(如果存在)是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。应该理解这样使用的数据在适当情况下可以互换，以便这里描述的实施例能够以除了在这里图示或描述的内容以外的顺序实施。此外，术语“包括”和“具有”以及他们的任何变形，意图在于覆盖不排他的包含，例如，包含了一系列步骤或单元的过程、方法、系统、产品或设备不必限于清楚地列出的那些步骤或单元，而是可包括没有清楚地列出的或对于这些过程、方法、产品或设备固有的其它步骤或单元。
为便于理解，下面对本发明实施例中的防爆电池进行具体详细的描述，请参阅图1和图2，本发明实施例中防爆电池一个实施例包括：
该防爆电池3，可以包括电芯1，电芯1可以包括裸电芯11和外包装膜12，裸电芯11可以封装于外包装膜12中；
其中，外包装膜12上设有防爆槽13，防爆槽13用于当外包装膜12的内 部压力大于预设安全门限时，开启泄压。
具体的，在实际应用中，如图1所示，裸电芯11的外层设有外包装膜12，其中，裸电芯11可以包括依次层叠的正极111、隔膜112、负极113，正极111可以与正极极耳114连接，负极113可以与负极极耳115连接，其中，正极极耳114、负极极耳115的边缘分别设有绝缘片116，同时，裸电芯11在外包装膜12的封装过程中可以灌注电解液，以使得电芯1在防爆电池3中得到应用。
在上述基础上，正极111可以为诸如LiCoO2，负极113可以为诸如石墨，隔膜112可以为诸如聚丙烯或聚乙烯，正极极耳114可以为诸如铝片，负极极耳115可以为诸如镍片，绝缘片116可以为诸如聚丙烯PP，电解液可以为诸如LiPF6，外包装膜12可以为诸如铝塑膜。可以理解的是，上述电芯1的各部件的材料均为举例说明，在实际应用中，上述材料还可以采用其它，能够达到防爆电池3的相应要求即可，具体此处不做限定。
基于上述电芯的结构，为了使得在含有该电芯1的防爆电池3的使用过程中，可以有效防止电芯1过度膨胀而导致防爆电池3的爆炸，在电芯1的外包装膜12上可以设有防爆槽121，在实际应用中，当电芯1由于膨胀导致外包装膜12的内部压力超过预设安全门限时，在内部压力的作用下，防爆槽121将被撕裂，从而可以使得产生的内部压力得到释放，达到泄压的目的，同时，相对来说，电芯1的设计并未增加产品成本，且易于实现。
可以理解的是，本实施例中的预设安全门限可以对防爆电池3进行安全测试得到，同时，防爆槽121应该与该安全测试结果相适应。例如，假设在对防爆电池3进行有效实验次数的安全测试后，得到防爆电池3在电芯1由于过度膨胀而导致爆炸的外包装膜12的最小内部压力为10N，那么可以将预设安全门限设为9N，则对防爆槽121的实际设计而言，一旦电芯1由于膨胀而导致外包装膜12的内部压力大于9N，则应该保证防爆槽121在该内部压力作用下将会被撕裂，那么意味着当外包装膜12的内部压力不大于9N时，防爆槽121将保持原始状态，以防止电解液流出而造成不必要的损坏。需要说明的是，本实施例中的预设安全门限应该根据实际情况进行设置，本实施例仅是举例说明。
在上述本发明实施例中防爆电池的基础上，本发明实施例中，防爆槽121 与外包装膜12可以具有不同的结构关系，请参阅图2，下面分别进行说明：
一、外包装膜12与防爆槽121可以为一体结构：
在本发明的一些实施例中，外包装膜12与防爆槽121可以为一体结构，且防爆槽121的厚度可以小于外包装膜12的厚度。
具体的，为了保持外包装膜12与防爆槽121的整体性，防爆槽121可以为外包装膜12的一部分，但为了利于防爆槽121在外包装膜12的内部压力下可以被撕裂，防爆槽121的厚度可以小于外包装膜12的厚度。其中防爆槽121的厚度可以根据上述说明的安全测试进行具体设置，此处不做限定。
进一步的，防爆槽121的厚度可以与预设安全门限呈正相关，即预设安全门限越大，防爆槽121的厚度越大，从而可以适应于不同的电池需要，也具有灵活多变性。
二、外包装膜12与防爆槽121可以为非一体结构：
在本发明的一些本实施例中，外包装膜12上设有适配于防爆槽121的开口结构，防爆槽121通过预设方式覆盖于开口结构上。
具体的，外包装膜12与防爆槽121也可以不为一体结构，那么外包装膜12上可以设有适配于防爆槽121的开口结构，其中，防爆槽121的尺寸可以等于或大于开口结构的尺寸，从而防爆槽121可以覆盖于开口结构上，对外包装膜12起到封闭作用，防止电解液的流出。在实际应用中，防爆槽121可以以预设方式覆盖于外包装膜12的开口结构上，该预设方式即为防爆槽与外包装膜12的连接方式，可以为诸如粘结，或者熔接。
可以理解的是，本实施例中的预设方式除了上述说明的内容，在实际应用中，还可以是其它，只要使得防爆槽121可以对外包装膜12起到封闭作用即可，具体此处不做限定。
同时，在上述结构中，可以以两种方式开启防爆槽121进行泄压：1、当外包装膜12的内部压力大于预设安全门限时，防爆槽121与外包装膜12的连接处将会开裂，从而可以开启防爆槽121进行泄压；2、若防爆槽121与外包装膜12的连接处较为紧密，则防爆槽121承受的压力可以设计为小于或等于预设安全门限，则在外包装膜12的内部压力大于预设安全门限时，防爆槽121由于无法承受较大的压力而破裂，从而达到泄压的目的。需要说明的是上 述两种方式，防爆槽121的设计均应与防爆电池3的安全测试结果相适应，以达到较好的效果。
在上述两种结构关系中，防爆槽121可以具有不同的形状结构，可以包括直线结构、曲线结构、多边结构中的一种。具体的，若防爆槽121为直线结构，即外包装膜121可以开有诸如一条或以上的直线槽；若防爆槽121为曲线结构，即外包装膜121可以开有诸如一弧形槽，也可以为诸如圆形或椭圆形；若防爆槽121为多边结构，即外包装膜121可以为诸如三角形。
可以理解的是，本实施例中上述说明的防爆槽121的形状结构内容仅为举例说明，在实际应用中，还可以是其它，只要使得具有防爆槽121的效果即可，具体此处不做限定。
进一步的，本实施例中，防爆槽121与外包装膜12可以为同一材质结构，也可以不为同一材质结构，具体此处不做限定。
在上述本发明实施例中防爆电池的基础上，本发明实施例中，为了防止防爆槽121由于被开启而导致的电解液流出，可以进一步对防爆电池3进行安全防护，本发明还提供了一种电池装置，请参阅图2，本发明实施例中电池装置一个实施例包括：
该电池装置可以包括电池仓2，电池仓2的内部设有防爆电池3，其中，电池仓2为封闭结构。
具体的，在实际应用中，含有电芯1的防爆电池3可以应用于移动终端，当外包装膜12的内部压力大于预设安全门限时，防爆槽121将在内部压力的作用下开启泄压，则原来灌装于电芯1中的电解液将通过防爆槽121部分流出，而泄漏的电解液将会导致移动终端的其它部件的损坏，本实施例中，为了防止出现这种情况，防爆电池还可以设有电池仓2，该电池仓2为封闭结构，电芯1可以置于电池仓2的内部，即包括有电芯1的防爆电池3可以设于电池仓2的内部，以将防爆电池3与移动终端的其它部件进行隔离。因此，通过上述结构，当防爆槽121进行开启泄压后，电芯1中流出的电解液将流出到电池仓2中，而不会进入移动终端的其它模块，从而不会给其它模块造成损伤，同时，在对该电池装置进行维修时，只需更换防爆电池3，处理流出的电解液，便可使产品恢复工作，有利于减少用户损失。
进一步的，为了方便防爆电池3的工作，电池仓2还可以包括电池连接器21，该电池连接器21可以用于将包括有电芯1的防爆电池3与移动终端的主板4连接，从而可以给主板4供电，使得移动终端正常工作。其中，移动终端的主板4与主小板5之间可以通过主小板连接器6进行连接，以达到相应的工作目的。
可以理解的是，本实施例中的防爆电池3可以包括电池保护板，也可以不包括电池保护板，具体此处不做限定。
通过上述结构可知，本发明不仅可以有效防止电芯1发生过度膨胀而导致防爆电池3爆炸的风险，也可以不增加产品成本而达到相应的效果，同时，也有利于方便电池防爆装置的维修，减少用户损失。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。
在本申请所提供的几个实施例中，应该理解到，以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。

Claims (7)

  1. 一种防爆电池，所述防爆电池包括电芯，所述电芯包括裸电芯和外包装膜，所述裸电芯封装于外包装膜中，其特征在于，
    所述外包装膜上设有防爆槽，所述防爆槽用于当所述外包装膜的内部压力大于预设安全门限时，开启泄压。
  2. 根据权利要求1所述的防爆电池，其特征在于，所述外包装膜与所述防爆槽为一体结构，所述防爆槽的厚度小于所述外包装膜的厚度。
  3. 根据权利要求2所述的防爆电池，其特征在于，所述防爆槽的厚度与所述预设安全门限呈正相关。
  4. 根据权利要求1至3中任一项所述的防爆电池，其特征在于，所述外包装膜上设有适配于所述防爆槽的开口结构，所述防爆槽通过预设方式覆盖于所述开口结构上。
  5. 根据权利要求1至4中任一项所述的防爆电池，其特征在于，所述防爆槽包括直线结构、曲线结构、多边结构中的一种。
  6. 一种电池装置，其特征在于，所述装置包括电池仓，所述电池仓的内部设有如权利要求1至5中任一项所述的防爆电池，所述电池仓为封闭结构。
  7. 根据权利要求5所述的电池装置，其特征在于，所述电池仓还包括电池连接器，所述电池连接器用于将所述防爆电池与主板连接。
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