CN1839510B - 带有散热装置的电池块 - Google Patents

带有散热装置的电池块 Download PDF

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CN1839510B
CN1839510B CN2004800240917A CN200480024091A CN1839510B CN 1839510 B CN1839510 B CN 1839510B CN 2004800240917 A CN2004800240917 A CN 2004800240917A CN 200480024091 A CN200480024091 A CN 200480024091A CN 1839510 B CN1839510 B CN 1839510B
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passage
housing
wall
shell
battery
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CN1839510A (zh
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赖纳·格劳宁
斯特凡·凯勒
沃尔夫·马蒂亚斯
马尔钦·雷伊曼
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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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells for several batteries or cells simultaneously or sequentially
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
    • H01M10/623—Portable devices, e.g. mobile telephones, cameras or pacemakers
    • H01M10/6235—Power tools
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/643—Cylindrical cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • H01M10/6555—Rods or plates arranged between the cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the cells
    • 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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6561—Gases
    • 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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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biophysics (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

具有多个安置在壳体(1)内的电池单元(2)的电池块的高效散热这样产生：壳体(1)的包围这些电池单元(2)的壁这样形成，使得它构成至少一个用于散热介质的、相对于壳体(1)的内腔封闭的通道(3，4)。

Description

带有散热装置的电池块
技术领域
本发明涉及一种电池块，带有用于安置在壳体内的多个电池单元的散热的装置。
背景技术
可再充电的电池块例如用于驱动电动工具。无论在电池块运行时，即在其放电期间，还是在充电过程中，流过电池单元的电流都会强烈地加热电池单元。为了在充电过程中电池单元的温度不超过会导致电池单元损坏的最大允许阈值，必须减小充电电流，其结果是延长了电池块的充电时间。为了实现电池块较大的充电电流从而较短的充电时间，必须避免对电池块过强的加热。因此，根据现有技术，采用把电池单元的热量从电池块中导出的措施。例如，根据EP 940 864 B1，为此目的为电池块设置一个通风系统，它允许空气通过电池块壳体内部流通。为此在电池块的壳体上设置空气进入口和空气流出口。这里的缺点是，随着空气流过电池块壳体，污染颗粒也侵入电池块内部。然而，电池块内部的污染会改变电池单元之间的热传递，此外还影响电池块的电气功能。位于在电池块内部的件构成大的空气阻抗，它影响散热效果。
发明内容
本发明的任务在于，提供一种带有散热装置的电池块，该散热装置具有尽可能高的散热作用，此外不影响电池块的功能。
所述任务通过本发明的技术方案解决，其方案是，包围这些电池块的电池单元的壳体壁这样形成，使得它构成至少一个用于散热介质的、相对于壳体的内腔封闭的通道，其中，所述至少一个通道设置在这些单个的电池单元之间的楔中，其中，所述至少一个通道这样形成，使得它的壁形状配合地贴靠在与它相邻的电池单元上。即，根据本发明，散热介质不通过电池块的壳体内部。因此避免了脏物进入电池块内部，从而影响其电气功能。此外，与电池块内部分开的通道对于流通的散热介质形成非常小的流动阻抗，由此产生高的冷却作用。
本发明的有利的扩展由下面说明中得出。
所述至少一个通道这样形成，使得它的壁形状配合地贴靠在与它相邻的电池单元上，由此可优化散热。通过使构成所述至少一个通道的壁区域至少部分地由导热材料构成，能够实现特别良好的散热。
符合目的的是，所述至少一个通道的由导热材料构成的壁区域相对于壳体的外部壁区域缩回设置，使得可避免用户接触到导热材料。
有利的是，所述通道平行于所述电池单元的纵轴线延伸。
附图说明
下面根据附图中表示的多个实施例，详细说明本发明。附图中：
图1表示一个电池块的俯视图，其内有电池单元，
图2表示该电池块的A-A剖面，其中，用于散热介质的通道是一个置于壳体内的自己的件，
图3表示一个电池块的一个剖面，其中，通道通过两个壳体件构成。
具体实施方式
图1表示一个电池块的俯视图，其中，在壳体1中安置了多个圆柱形的电池单元2。在该电池块的图示位置中，这些圆柱形电池单元2的纵轴线垂直于图示平面延伸。
在图1所示实施例中，壳体1设置有两个通道3和4，散热介质、例如空气可穿过它们流通。也可以仅设置一个通道或者设置多于两个的通道。通道3和4通过电池块壳体1的相应成形这样构成，使得它们相对于壳体1的内腔完全封闭。由此，通过通道3和4流通的散热介质不能进入电池块内部，其结果是，也没有污染颗粒能够随散热介质一起进入壳体内。通道3和4的光滑的壁可保证适合流体技术地引导散热介质，这导致非常好的冷却作用。散热介质的传输可以通过自然对流或者通过借助风扇支持的对流实现。这样的风扇可以例如是该电池块的或者电池块充电设备的或者电池块置于其内的机器的一个组成部分。
图2所示的电池块的A-A剖面也表示出，通道3、4平行于圆柱形构造的电池单元2的纵轴线延伸。通道3和4的这一位置特别有利，因为通道3和4设置在单个电池单元2之间的楔中。它的优点是，能够使通道3和4的壁5和6与相邻的电池单元2大面积导热地接触。但是通道也可以相对于电池单元横向或以对角线方式设置和具有弯曲的走向。特别从图1可以看出，通道3和4的壁5和6优选这样形成：它们形状配合地贴靠在与它们相邻的电池单元2上。如果此时通道3和4的壁5和6由导热特别好的材料(例如金属)构成，则散热作用特别高。
在图2所示的实施例中，电池块的壳体1由一个上壳体壳11和一个下壳体壳12组成。通道3和4的壁5及6通过装入到两个壳体壳11和12之间的自己的件5、6构成。如图2中的实施例所示，这些壳体件5、6相对于上壳体壳11和下壳体壳12缩回设置，使得能够避免用户接触到壁5或6的导热特别好的材料。
在图3所示的另一个实施例中，通道3、4的壁直接在壳体壳11、12上成形上。

Claims (1)

1.电池块，带有用于安置在壳体（1）内的多个电池单元（2）的散热的装置，其中，壳体（1）的包围这些电池单元（2）的壁这样形成，使得所述壁构成至少一个用于散热介质的、相对于壳体（1）的内腔封闭的通道（3，4），其中，所述至少一个通道（3，4）设置在这些单个的电池单元（2）之间的楔中并且这样形成，使得它的壁（5，6）形状配合地贴靠在与它相邻的电池单元（2）上，其特征在于，所述通道（3，4）平行于圆柱形构造的电池单元（2）的纵轴线延伸，壳体（1）由一个上壳体壳（11）和一个下壳体壳（12）组成并且所述通道的壁（5，6）通过至少部分地由导热材料构成的、装入到该上壳体壳(11)与该下壳体壳（12）之间的自己的壁区域（5，6）构成，所述壁区域（5，6）相对于所述上壳体壳（11）和下壳体壳（12）缩回设置，使得避免了用户接触该导热材料。
CN2004800240917A 2003-08-22 2004-06-25 带有散热装置的电池块 Expired - Fee Related CN1839510B (zh)

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DE2003138654 DE10338654A1 (de) 2003-08-22 2003-08-22 Batteriepack mit Mitteln zur Wärmeableitung
DE10338654.8 2003-08-22
PCT/DE2004/001348 WO2005027241A2 (de) 2003-08-22 2004-06-25 Batteriepack mit mitteln zur wärmeableitung

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DE10338654A1 (de) 2005-03-17
WO2005027241A3 (de) 2005-12-01
US20060141347A1 (en) 2006-06-29
US7597993B2 (en) 2009-10-06
CN1839510A (zh) 2006-09-27
EP1658654A2 (de) 2006-05-24

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