CN105977554A - 电池组件 - Google Patents
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- 238000012806 monitoring device Methods 0.000 claims abstract description 35
- 238000000926 separation method Methods 0.000 claims description 11
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 8
- 229910001416 lithium ion Inorganic materials 0.000 claims description 8
- JDZCKJOXGCMJGS-UHFFFAOYSA-N [Li].[S] Chemical group [Li].[S] JDZCKJOXGCMJGS-UHFFFAOYSA-N 0.000 claims description 4
- 235000013399 edible fruits Nutrition 0.000 claims 1
- 238000002955 isolation Methods 0.000 description 8
- 230000001771 impaired effect Effects 0.000 description 7
- 238000001514 detection method Methods 0.000 description 4
- 229910052744 lithium Inorganic materials 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 208000032953 Device battery issue Diseases 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 229920000867 polyelectrolyte Polymers 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 230000005779 cell damage Effects 0.000 description 1
- 208000037887 cell injury Diseases 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 150000002642 lithium compounds Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- 239000004065 semiconductor Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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Abstract
本发明题为“电池组件”。所述电池组件具有多个相互电气连接的电池单元,其中每个电池单元均具有多个电化学单体电池。每个电池单元均与多个电池单元的其它电池单元热隔离。每个电化学单体电池均具有监测装置。当监测装置所监测的至少一个测量值在某个预定值范围之外的时候,所述监测装置可将电池单元与其它电池单元电气隔离。
Description
技术领域
各种不同的实施方式一般均涉及电池组件以及具有电池组件的交通工具。
背景技术
在交通工具制造领域,例如在汽车制造和飞机制造领域,正在越来越多地将蓄电池用于电力驱动、部分驱动或者至少用于给电气装置供电。主要使用各种锂基蓄电池,因为这种蓄电池具有比较大的比能量。
如果没有专门的保护措施,各种具有液态或者高分子电解质的锂基蓄电池在某些情况下可能会发生热失控。例如机械损伤可能会引起内部短路。例如大电流在某些情况下可能会导致蓄电池发热。例如塑料外壳可能会熔化并且起火。某些情况下无法马上识别机械缺陷,也有可能在出现机械缺陷之后很长时间才会发生内部短路。空气尤其是湿气同样可能因为外部损伤侵入单体电池并且引起化学反应。各种锂离子蓄电池在遭受热负荷的时候,所使用的隔离物可能会熔化,并且因此发生内部短路,同时伴随剧烈的能量释放(发热,起火)。另外的危险可能源自于过载时(例如在充电的时候)单体电池化学物质的放热分解反应。
在汽车制造尤其是飞机制造领域,由于装机能量很高,对所用蓄电池的安全要求特别高。
发明内容
因此本发明的任务就算提供一种经过改善的电池组件。
可利用具有权利要求1所述特征的装置解决这一任务。从属权利要求所述均为示例实施方式。应当指出,装置实施例的特征也适用于使用装置的实施方式,反之亦然。
所述电池组件具有多个相互电气连接的电池单元,其中每个电池单元均具有多个电化学单体电池。每介电池单元均与多个电池单元的其它电池单 元热隔离。每个电化学单体电池均具有监测装置。当监测装置所监测的至少一个测量值在某个预定值范围之外的时候,所述监测装置可将电池单元与其它电池单元电气隔离。
本发明的思路在于将电池组件的电池单元相互热隔离。如果电池单元的至少一个电化学单体电池具有处在某个预定值范围之外的测量值,就将整个电池单元与电池组件的其它电池单元电气隔离。其好处一方面是通过热隔离使得其它电池单元的其它电化学单体电池不会受损,除此之外,其好处还在于当某一个或者多个电池单元失效的时候,其它电池单元不受影响继续可供使用。如果仅仅是有限数量的电池单元失效,还能够继续使用功率略有减小的电池组件。
所谓电化学单体电池指的是一种可以重新充电的储能器,也称作二次电池。电池单元包括多个电化学单体电池或二次电池。电池单元的单体电池首选相互串联,也可以选择将电池单元的单体电池相互并联。所谓电池一般指的是一种蓄电池,也就是可以充电的电池。监测装置首选局部布置在电化学单体电池上,或者至少布置在电化学单体电池附近,首选至少局部适当布置监测装置,使其能够直接或间接检测或者接收电化学单体电池的被监测的测量值。
所谓热隔离指的是电池组件的电池单元的热隔离。在某个电化学单体电池热失控的极端情况下,基于单纯材料性热隔离的单纯热隔离有可能不够充分,使得相邻的电池单元可能受损。
通过某个物理量(例如温度、电压、电流强度等等)的至少两个值定义一个值范围。首选通过上限值和下限值、也就是通过两个不同的值确定值范围。也可以选择通过单一的值以及值范围是否高于或低于该值的信息确定值范围。
按照一种实施方式所述,电池单元相互空间隔离排列。电池组件的各个电池单元首选相互空间隔离排列,以便实现更好的相互热隔离。准确来说,将电池组件的多个电池单元布置在例如飞机、机动车辆或者类似交通工具的不同区域中。通过空间隔离电池单元使得各个电池单元相互间实现更好的热 隔离。当电池单元的某一个或者多个电化学单体电池烧穿的时候,与其在空间上相隔一定距离的电池组件其它电池单元不会受到波及
按照一种实施方式所述,监测装置具有检测单元,所述检测单元可用来检测电化学单体电池的被监测的测量值。检测单元检测电化学单体电池的被监测的测量值。首选适当布置检测单元,使其至少局部与电化学单体电池形成热接触、电接触或者其它形式的接触,从而能够检测测量值。例如将检测单元至少局部布置在电化学单体电池上,或者布置在电化学单体电池之中,或者至少布置在单体电池的零件上。
按照一种实施方式所述,监测装置具有分析装置,所述分析装置可接收检测单元所检测的测量值,并且确定该测量值是否在预定的值范围之外。为了分析检测单元所检测的测量值,检测单元可将所检测的测量值或者多个测量值传输给监测装置的分析装置。分析装置确定所检测的测量值是否在预定的值范围之外。将预定的值范围(例如两个首选不同的温度值)被保存在例如监测装置或者分析装置的存储装置之中。例如分析装置可将检测单元所检测的温度值与所保存的温度值进行比较,以便确定所检测的温度值是否在通过两个保存的温度值所定义的值范围之内。
按照一种实施方式所述,检测单元包括至少一个用来检测电化学单体电池温度的温度传感器。为了检测电化学单体电池的温度,例如检测单元具有温度传感器,例如PTC传感器(具有正温度系数的温度传感器)或者NTC传感器(具有负温度系数的温度传感器)。为了尽可能精确检测电化学单体电池的温度,将温度传感器尽可能靠近布置在热源上,也就是局部或者完全布置在电化学单体电池的零件上,或者布置在电化学单体电池的零件中。
按照一种实施方式所述,如果温度传感器所检测的电化学单体电池温度在某个预定的值范围之外,则监测装置就将电池单元与多个电池单元的其它电池单元电气隔离。如果检测单元所检测的测量值例如在预定的值范围之外,那么这可能意味着电池单元的其中一个电化学单体电池开始烧穿。为了减小进一步的损害,监测装置将该电池单元与电池组件的其它电池单元电气隔离。
按照一种实施方式所述,如果所检测的电化学单体电池温度高于某个预定的值范围,监测装置就会将电池单元与其它电池单元电气隔离。如果检测单元所检测的测量值例如高于某个预定的温度值之外,那么这可能意味着电池单元的其中一个电化学单体电池开始烧穿。可以选择在存储装置中仅仅保存一个单一的值,该值表示检测装置应检测的电化学单体电池温度的某个阈值。
按照一种实施方式所述,每个电池单元均具有至少一个另外的检测单元,该检测单元包括用来检测电池单元上的电压的电压传感器。例如利用另外的检测单元的电压传感器可以检测电压变化,例如电池单元的电压降,例如该电压降可能意味着电池单元的某个或者多个电化学单体电池失效。通过将整个电池单元与电池组件的其它电池单元电气隔离的方式,可以在某些情况下防止电池组件或电池单元本身进一步受损。
按照一种实施方式所述,至少一个另外的检测单元包括用来检测电池单元上的电流的电流传感器。例如利用另外的检测单元的电流传感器可以检测电池单元的功率下降,例如功率下降可能意味着电池单元的某个或者多个电化学单体电池失效。通过将整个电池单元与电池组件的其它电池单元电气隔离的方式,可以在某些情况下防止电池组件或电池单元本身进一步受损。
按照一种实施方式所述,电化学单体电池是一种锂离子蓄电池。锂离子蓄电池或者锂蓄电池是一种基于电化学电池的所有三相中的锂化合物的蓄电池,不仅负电极、而且正电极中的反应性材料以及电解质均含有锂离子。如果没有专门的保护措施,具有液体或者高分子电解质的各种锂离子蓄电池可能会例如发生热失控。通过这里所述的电池组件,可将电池单元的某个或多个电化学单体电池发生热失控时对电池组件其它电池单元的影响最小化。
按照一种实施方式所述,锂离子蓄电池是一种锂硫蓄电池(Li-S)。锂硫蓄电池的阴极中通常使用硫作为与碳的复合材料,这样电极就能获得充分的传导能力。诸如孔隙几何形状和碳的比表面积之类的结构特性对于可用硫含量以及电极的比容量有决定性的影响。通常将箔或者涂层形式的锂金属用于阳极。以锂硫单体电池为基础,可以制成重量明显减轻、能含量和体积保持 相同的电池。
除此之外,为了解决所述的任务,还阐述一种具有至少一个上述电池组件的交通工具。所谓交通工具指的是空中交通工具、水上交通工具或者陆上交通工具。
按照一种实施方式所述,至少一个电池组件的多个电池单元空间分布在交通工具范围内。例如可以在交通工具中适当装入上述电池组件,使得电池组件的各个电池单元布置在交通工具(例如空中交通工具)的不同区域中。通过空间隔离电池单元实现各个电池单元的热隔离。当某个电池单元的一个或多个电化学单体电池热失控的时候,电池组件的其它电池单元不会受波及。
按照一种实施方式所述,交通工具是一种飞行器。交通工具也可以是一种机动车辆,例如汽车,或者是一种水上交通工具,例如船舶。所谓飞行器指的是一种空中交通工具,准确来说是一种在地球大气之内飞行的器具。
按照一种实施方式所述,飞行器是一种UAV(unmanned aerial vehicle)之类的无人驾驶飞机。例如飞行器可以是一种无人驾驶的轻型或者超轻型飞机。飞行器也可以是一种有人驾驶的飞机。
按照一种实施方式所述,飞行器具有高空平台或者伪卫星(或者称作Pseudolite)。Pseudolite是Pseudo(伪)和Satellite(卫星)组合而成的术语。伪卫星是一种地面或者近地面发射器,可发射模拟卫星信号的信号。在本形式中,飞行器可作为近地面的发射器(与真正的卫星相比)。例如可以将伪卫星用来局部提高GPS之类的卫星导航系统的测量精度。对于GPS接收器来说,伪卫星就像是附加的卫星。也可以将伪卫星用来在城市中传播卫星广播的信号。准确来说,伪卫星主要承担一般由卫星执行的任务,然而优点是此类伪卫星的成本通常比真正的卫星低很多,尤其省去了通常将“真正”卫星送入轨道所需的昂贵运载火箭费用。高空平台(英语:high altitude platform(Station),HAP(S))是高空准静态无人驾驶飞行物体的总称。可以将高空平台用来进行监测(交通、大型活动、天气),在适当的高度上甚至可用于移动通信,没有卫星众所周知的卫星信号延迟。
例如可以在飞行器中适当装入上述电池组件,使得电池组件的各个电池单元布置在飞行器的不同区域中。通过空间隔离电池单元实现各个电池单元的热隔离。当某个电池单元的一个或多个电化学单体电池热失控的时候,电池组件的其它电池单元不会受波及。
附图所示各种视图中相同的附图标记一般均涉及相同的部件。附图没有必要按照比例绘制;换而言之,总体上以直观说明本发明的原理为重。在以下说明部分中将参考以下附图描述本发明的各种实施方式,其中。
附图说明
附图1电池组件的一种实施方式;
附图2电化学单体电池上的监测装置的一种实施方式;
附图3电池单元的一种实施方式;
附图4一种传统的电池组件;以及
附图5飞机与电池组件的一种实施方式。
具体实施方式
以下详细说明将参考那些用以解释特殊细节和可以在其中运用本发明的实施方式的附图。
这里所使用的“示例”一词具有“作为一种示例、案例或者直观说明”的含义。这里被描述为“示例”的每种实施方式或者实施例并非一定优于或者好于其它实施方式或者实施例。
以下详细说明部分中参考的附图均构成该说明的一部分,并且其中所示均为专用于说明的实施方式,在这些实施方式中可以实施本发明。就此而言,将参考所述附图的方向使用诸如“上方”、“下方”、“前面”、“后面”、“前面的”、“后面的”等等之类的方向术语。由于可以在大量不同的方向定位实施方式的组件,因此该方向术语可用来进行说明并且没有任何限制作用。显而易见,可以使用其它的实施方式,并且可以在不偏离本发明范围的情况下进行结构性修改或者逻辑修改。显而易见,只要没有其它特别说明,可以将这里所述的不同实施例的特征相互组合。因此不应狭义理解以下的详细说明,并且通过附加权利要求定义本发明的保护范围。
在本说明部分中,“连接”、“接线”以及“耦合”这些说法不仅用来描述直接连接,而且也用来描述间接连接、直接或间接接线以及直接或者间接耦合。附图中相同或者类似的元件均配有相同的附图标记,只要符合目的即可。
附图1所示为电池组件1的一种实施方式。电池组件1具有多个相互电气连接的电池单元2、2′。每个电池单元2均具有多个电化学单体电池3。每个电池单元2均与电池组件1的多个电池单元2、2’的其它电池单元2’热隔离。电池单元2、2’的每个电化学单体电池均具有监测装置4。当监测装置4所监测的至少一个测量值在某个预定值范围之外的时候,所述监测装置4可将电池单元2与其它电池单元2′电气隔离。尽管电池组件1的电池单元2、2’在附图所示的电池组件1的实施方式中相互比较靠近排列,电池单元2、2’的间距仍然几乎可以是任意大小,并且基本上仅仅受限于例如使用在其中电池组件1的交通工具的尺寸。然而首选适当选择电池单元2、2’相互间的距离,使得电池组件1的各个电池单元2、2’之间的功率损耗不会变得太大。然而最好应将每个电池单元2、2’当作例如与其它电池单元2、2’空间隔离的、例如具有自己的壳体或类似部件的独立元器件。通过空间隔离使得电池组件的电池单元2、2’相互间实行尽可能好的热隔离。当电池单元2的一个或多个电化学单体电池3发生热失控也就是烧穿的时候,其它电池单元2’不会连带受损。监测装置4可用来例如监测电化学单体电池3的温度上升。由于受损的电池单元2与电池组件1的其它电池单元2’电气隔离,因此可以继续使用电池组件1的剩余电池单元2′。
如果将电池组件1划分成多个很小的电池单元2、2′,则一个或者少数几个电池单元2的功率损耗对电池组件1的影响比较小。
附图2所示为电化学单体电池3上的监测装置4的一种实施方式。监测装置4在附图所示的实施方式中具有检测单元41、分析装置42、存储装置43和通信装置44。检测单元41、分析装置42、存储装置43和通信装置44相互连接。检测单元41利用(图中没有详细绘出的)温度传感器检测待检测的测量值,例如电化学单体电池3的温度,并且将测量值传输给分析装置42。分析装置42将检测单元41传输的测量值与保存在存储 装置43中的某个阈值或者值范围进行比较,也就是与上限阈值和下限阈值进行比较。分析装置42确定测定的温度值是否低于或者高于阈值。电化学单体电池的温度上升表明电化学单体电池可能热失控。如果分析装置42确定电化学单体电池3的温度太高,也就是高于所保存的阈值,就会通过通信装置44将信号(例如电流脉冲)传导给分断装置(例如MOSFET之类的半导体元器件)或者晶体管或类似元器件。这样就可使得整个电池单元2与例如附图1中所示电池组件1的其它电池单元2’电气隔离。
附图3所示为电池单元2的一种实施方式。电池单元2具有多个串联的电化学单体电池3。电化学单体电池3各自具有监测装置4。例如为了检测电池单元2的电压或者电池单元2上的电流,电池单元2具有另外的监测装置5。另外的监测装置5包括例如电压传感器和/或者电流传感器,可以将其用来检测电池单元的电压和/或者电池单元上的电流。例如电压或者功率变化可能表示电池单元的一个或者多个电化学单体电池例如因为开始热失控而损坏。例如当电压或者功率变化超过了某个临界值的时候,就可以将整个电池单元2与附图1中所示电池组件1的其它电池单元2’电气隔离。为此另外的监测装置5可以具有例如存储装置,将一个或者多个阈值保存在该存储装置中,并且可以在分析装置中将其与所检测的电流或者电压值进行比较。
附图4所示为一种传统的电池组件1的构造。传统电池组件1的所有电化学单体电池或者二次电池3均封装在同一个壳体之中。如果一个或者多个电化学单体电池3因为缺陷(阴影区)而发生热失控,就会同时殃及周围的单体电池3(阴影区)并且也可能使其受损。某些情况下一个单独的单体电池烧穿可能会使得周围的多个其它单体电池受损,使得整个电池组件无法使用。可以通过本申请书中所述的电池组件很大程度上避免这种情况。
附图5所示为飞机10与电池组件的一种实施方式。电池组件具有多个电池单元2、2′。电池单元2、2’布置在飞机的不同区域之中,例如在机身和机翼之中。通过空间隔离电池单元2、2’使得各个电池单元2、2’相互 间实现尽可能好的热隔离。如果电池组件的一个或者多个电化学单体电池损坏并且因此而发生热失控,则可以将该电池单元2与其它电池单元2’电气隔离。其它电池单元2’继续可供使用,并且能够以略微减小的功率继续使用,从而在很大程度上防止整个电池组件完全失效。
尽管主要参考一些实施例阐述了本发明,熟悉该专业领域的人士仍然应当理解,还可以对实施方式和细节进行若干修改,只要不偏离权利要求所定义的发明实质和范围即可。因此通过附加的权利要求确定本发明的范围,并且有意包括所有对权利要求的词义或者等效范围的修改。
附图标记清单
1 电池组件
2,2’ 电池单元
3 电化学单体电池
4 监测装置
41 检测单元
42 分析装置
43 存储装置
44 通信装置
5 另外的监测装置
10 飞机。
Claims (16)
1.电池组件(1),具有
多个相互电气连接的电池单元(2,2′);
其中每个电池单元(2)具有多个电化学单体电池(3);
其中每个电池单元(2)与多个电池单元(2,2′)的其它电池单元(2′)热隔离;
其中每个电化学单体电池(3)具有监测装置(4);并且
其中监测装置(4)设立成,当监测装置(4)所监测的至少一个测量值在预定值范围之外的时候将电池单元(2)与其它电池单元(2′)电气分离。
2.根据权利要求1所述的电池组件,其中电池单元(2)相互空间分离排列。
3.根据上述权利要求中任一项所述的电池组件,其中所述监测装置(4)具有检测单元(41),所述检测单元设立用来检测电化学单体电池(3)的被监测的测量值。
4.根据上述权利要求中任一项所述的电池组件,其中所述监测装置(4)具有分析装置(42),所述分析装置可接收检测单元(41)所检测的测量值,并且确定该测量值是否在预定的值范围之外。
5.根据权利要求3~4中任一项所述的电池组件,其中所述检测单元(41)包括至少一个用来检测电化学单体电池(3)的温度的温度传感器。
6.根据权利要求5所述的电池组件,其中监测装置(4)设立成,如果温度传感器所检测的电化学单体电池(3)的温度在预定的值范围之外则将电池单元(2)与多个电池单元(2,2′)的其它电池单元(2′)电气分离。
7.根据权利要求6所述的电池组件,其中监测装置(4)设立成,如果所检测的电化学单体电池(3)的温度高于预定的温度值就将电池单元(2)与其它电池单元(2’)电气分离。
8.根据权利要求3~7中任一项所述的电池组件,其中每个电池单元(2)具有至少一个另外的检测单元(5),该检测单元包括用来检测电池单元(2)上的电压的电压传感器。
9.根据上述权利要求中任一项所述的电池组件,其中所述至少一个另外的检测单元(5)包括用来检测电池单元(2)上的电流的电流传感器。
10.根据上述权利要求中任一项所述的电池组件,其中所述电化学单体电池(3)是锂离子蓄电池。
11.根据权利要求10所述的电池组件,其中所述锂离子蓄电池是锂硫蓄电池。
12.具有上述权利要求中任一项所述的至少一个电池组件(1)的交通工具(10)。
13.根据权利要求12所述的交通工具,其中至少一个电池组件(1)的多个电池单元(2,2′)空间分布地排列在交通工具(10)上。
14.根据权利要求12~13中任一项所述的交通工具,其中所述交通工具(10)是飞行器。
15.根据权利要求14所述的交通工具,其中所述飞行器是无人驾驶的飞机。
16.根据权利要求14~15中任一项所述的交通工具,其中所述飞行器是一种高空平台或者伪卫星。
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EP15000555.1A EP3062363B1 (de) | 2015-02-26 | 2015-02-26 | Batterieanordnung |
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RU2648979C2 (ru) | 2018-03-29 |
EP3062363A1 (de) | 2016-08-31 |
EP3062363B1 (de) | 2023-05-31 |
RU2016104626A (ru) | 2017-08-16 |
ES2948893T3 (es) | 2023-09-21 |
US20160254576A1 (en) | 2016-09-01 |
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