WO2007107036A1 - A soft package lithium ion power battery module - Google Patents

A soft package lithium ion power battery module Download PDF

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Publication number
WO2007107036A1
WO2007107036A1 PCT/CN2006/000423 CN2006000423W WO2007107036A1 WO 2007107036 A1 WO2007107036 A1 WO 2007107036A1 CN 2006000423 W CN2006000423 W CN 2006000423W WO 2007107036 A1 WO2007107036 A1 WO 2007107036A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
lithium ion
battery module
ion power
package lithium
Prior art date
Application number
PCT/CN2006/000423
Other languages
English (en)
French (fr)
Inventor
Zai Yue
Hua Xu
Ningning Wu
Xiangli Lei
Lu Qi
Original Assignee
Citic Guoan Mengguli New Energy Technology Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Citic Guoan Mengguli New Energy Technology Co., Ltd. filed Critical Citic Guoan Mengguli New Energy Technology Co., Ltd.
Priority to US12/293,612 priority Critical patent/US20100196752A1/en
Priority to PCT/CN2006/000423 priority patent/WO2007107036A1/zh
Priority to EP06722075.6A priority patent/EP2006934A4/en
Priority to JP2009500685A priority patent/JP5102280B2/ja
Priority to CN2006800537388A priority patent/CN101401227B/zh
Publication of WO2007107036A1 publication Critical patent/WO2007107036A1/zh

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Classifications

    • 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
    • H01M50/112—Monobloc comprising multiple compartments
    • 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
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
    • H01M50/176—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for prismatic or rectangular 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
    • H01M50/51—Connection only in series
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/514—Methods for interconnecting adjacent batteries or cells
    • H01M50/517—Methods for interconnecting adjacent batteries or cells by fixing means, e.g. screws, rivets or bolts
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/521—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material
    • H01M50/522—Inorganic material
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
    • 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
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular 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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • 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 invention relates to a power battery, in particular to a flexible package lithium ion power battery. Background technique
  • An object of the present invention is to provide a flexible package lithium ion power battery module to compensate for the deficiencies of the prior art.
  • the present invention provides a flexible package lithium ion power battery module, including:
  • a battery case comprising two opposing side walls for providing electrode terminals
  • a connector electrically connecting the positive and negative ear of the plurality of batteries to connect the plurality of batteries in series or in parallel into a battery pack, and forming a positive electrode and a negative electrode of the battery;
  • the two negative terminals are electrically connected And a negative electrode of the battery pack, and facing oppositely on the two opposite side walls of the battery case and exposed to the outside of the battery case;
  • the terminal is located on the side wall Arranging such that when a plurality of the battery modules are docked in series or in parallel, two terminals on the abutting side walls of the battery module are respectively opposite to two opposite side walls of adjacent battery modules The terminals face each other.
  • a certain number of flexible packaging lithium ion power batteries are disposed in the casing Forming a module to protect the flexible packaging battery from mechanical damage;
  • battery standard modules of different specifications can be constructed by appropriately selecting the electrical connection mode (series or parallel) and the number of batteries in the module;
  • a plurality of battery modules can be easily and conveniently fixed in series or in parallel, and the battery module can be appropriately selected according to the voltage and power requirements of the electric device. Connection method and quantity. ;
  • the battery tab is electrically connected by a plate-like connector, which effectively improves the contact member and reduces the contact resistance.
  • the ion power battery module of the flexible package of the invention is simple and standardized, which ensures the safe and reasonable use of the battery and fully exerts the battery performance.
  • Figure 1 is a schematic view of a flexible package lithium ion power battery
  • FIG. 2 is a schematic structural view of a battery module of the present invention, wherein two battery modules are schematically illustrated, each of which includes a plurality of batteries of FIG. 1;
  • Figure 3 is a cross-sectional view of a battery module of Figure 2;
  • FIG. 4 (a) schematically shows the parallel connection of two battery modules of the present invention
  • Figure 4 (b) schematically shows a series connection of two battery modules of the present invention
  • Fig. 5(a) schematically shows a parallel connection between cells within a single battery module
  • Fig. 5(b) schematically shows a series connection between cells within a single battery module.
  • Fig. 1 shows an embodiment of a flexible package lithium ion power battery 3 used in the present invention.
  • the battery 3 has a flat shape with a certain thickness and has two tabs 4 at its top end, which are a positive electrode tab and a negative electrode tab, respectively.
  • each of the battery modules includes a battery case 1 made of an insulating material, for example, injection molded of flame retardant ABS plastic.
  • the battery case 1 has a cubic shape with its upper end open for insertion into a battery pack.
  • the battery case 1 may further include a cover (not shown) for covering its open opening.
  • the battery pack is formed by a plurality of batteries 3 (four batteries 3 in FIGS. 2 and 3) being closely combined in the thickness direction thereof, and the battery case 1 is sized to be in phase with the battery pack. Adapted so that the battery pack can be fitably placed in the battery case 1.
  • the bottom surface inside the battery case 1 and the bottom surface of the battery pack It can be connected with an adhesive.
  • the battery box 1 has a total of four openings 5 on its two opposite side walls, each side having two openings 5 for receiving or embedding the terminals of the battery module, and the terminals It is exposed to the outside of the battery case 1.
  • the terminal may be formed as a conductive wiring board which is disposed in the opening 5 in parallel with the side walls.
  • Each battery module includes two positive terminals and two negative terminals. As shown in FIG. 2, one of the two openings 5 on the front side wall of the battery case 1 is marked with a (+) sign. Positive terminal and a negative terminal identified by the (-) sign. In the same manner, a positive terminal and a negative terminal are provided on the rear side wall of the battery case 1. Moreover, the two positive terminal terminals face each other and are electrically connected to the positive electrode of the battery pack, and the two negative electrode terminals also face each other and are electrically connected to the negative electrode of the battery pack.
  • each battery module is shown with (+) and negative (-).
  • the numbers indicate the positive terminal and the negative terminal, respectively, and the double arrows in the figure indicate electrical connections.
  • the two positive terminals face each other and are respectively disposed on two opposite side walls of the battery case, and the two negative terminals also face each other and are respectively disposed on two opposite sides of the battery case On the wall.
  • FIG. 4(a) when two battery modules are connected in parallel, the two battery modules are placed facing each other in the same manner, and on the two butted side walls to be butted, the two positive terminal phases are Faced and electrically connected, the two negative terminals are also facing and electrically connected.
  • a plurality of batteries 3 are electrically connected by means of a connector 2, as shown in Fig. 2.
  • the connector 2 selectively electrically connects the positive and negative terminals 4 of the plurality of batteries 3 in the module to connect the plurality of batteries 3 in series or in parallel into a battery pack, and form a positive electrode and a negative electrode of the battery pack.
  • FIGS. 5(a) and 5(b) show the arrangement of a plurality of cells 3 and their tabs 4 in a single electrical block, wherein the two figures schematically represent the battery 3 with the + and - signs. Positive and negative ears.
  • the tabs 4 of the plurality of batteries 3 are arranged in two rows.
  • the positive electrode ears of the plurality of batteries 3 are arranged in a row, and the negative electrode ears are arranged in another column; in the case of the series connection shown in FIG. 5(b), a plurality of The positive and negative ears of the battery 3 are staggered in both columns.
  • the connecting member 2 includes two elongated connecting plates which are at least partially electrically conductive, which are respectively disposed on the two rows of tabs and arranged along the direction of the tabs. Extending, and using its conductive portion to selectively electrically connect to the tabs in its column, and form the positive and negative electrodes of the battery pack.
  • the web 2 can be mechanically coupled to the tab 4 in its column to secure the web to the battery pack.
  • the connecting plate 2 in connection with Figs. 5(a) and 5(b), the selective electrical connection of the connecting plate 2 and the tab 4 of the battery 3 will be described, and the hatched portion in the figure indicates the conductive portion of the connecting plate 2.
  • the positive ears of all the batteries are electrically connected to one connecting plate 2
  • the negative electrodes of all the batteries are electrically connected to the other connecting plate 2, so that the two connecting plates 2 respectively
  • the positive electrode and the negative electrode of the battery pack are formed, so that the two connecting plates 2 can be electrically connected to the two positive terminal (+) and the two negative terminal (-), respectively, which is established for any battery.
  • the connecting plate 2 as a whole may be electrically conductive.
  • each of the connecting plates 2 has a partially conductive portion (as shown by the shadow portion), and is electrically connected to the tabs of the column in which it is arranged to form a series connection. It can be appreciated that, in the case of series connection, when an odd number of batteries are included in the series battery pack, the positive and negative poles of the battery pack are respectively located on the two connecting plates 2, so that the two connecting plates 2 can be respectively adjacent to the two positive electrodes
  • the terminal (+) and the two negative terminals (-) are electrically connected, as shown in Figure 5(b).
  • the connecting board 2 may be adjacent to the two adjacent thereto.
  • the terminal plates are formed in an integral U shape, wherein the connecting plate is the bottom of the weir, and the two connecting plates are respectively the U-shaped upward bent portions.
  • the additional electrically conductive connection is preferably a lower resistance conductive plate or a thick wire.
  • the modules When the modules are connected in series, only one set of opposite positive and negative terminals need to be electrically connected on the abutting side walls of two adjacent battery modules, and the module can be electrically connected by the module connecting component. Connected and mechanically fixed; and another set of opposing positive and negative terminals on the butted side wall may be mechanically fixed only, in which case an insulating sheet may be disposed between the two terminals.
  • the plug (not shown).
  • the battery case 1 is injection molded from flame-retardant ABS plastic, and is sized to fit the selected four 100Ah flexible package lithium ion batteries 3 .
  • the length of the connecting plate 2 is the same as the thickness of the battery case 1, the width is equal to the width of the tab 4 of the battery, and the height of the folded edge at both ends is 20 mm, forming a wiring board, and the connecting board has two connecting holes 6, which The connecting plate 2 is made of a 1 mm copper plate.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Battery Mounting, Suspending (AREA)

Description

一种软包装锂离子动力电池模块 技术领域
本发明涉及一种动力电池， 特别是涉及软包装锂离子动力电池。 背景技术
目前使用的软包装锂离子动力电池， 大都是根据用电设备的电压和 功率的需要， 将单个电池相互随意地串联和并联去使用， 还没有一种既 方便又合理的连接组合模式。 这种将单个棵体软包装电池任意组合的做 法， 除了极易机械损伤原本脆弱的电池外， 还会由于连接烦瑣及操作的 不规范， 导致接线过长、 接触不良、 接触电阻过大， 而引起安全方面的 问题。 发明内容
本发明的目的是为弥补已有技术的不足， 而提供一种软包装锂离子 动力电池模块。
为了实现上述目的， 本发明提供一种软包装锂离子动力电池模块， 包括：
电池箱， 其包括用于设置电极接线端的两个相对侧壁；
装配在所述电池箱内的多个软包装锂离子动力电池， 每个电池都具 有正和负极耳；
连接件， 其选择性地将所述多个电池的正和负极耳电连接， 以便将 所述多个电池串联或并联成电池组 , 并形成所述电池组的正极和负极； 两个正极接线端， 均电连接至所述电池组的正极， 并且相面对地分 别设置在所述电池箱的所述两个相对侧壁上且暴露于电池箱的外部； 两个负极接线端， 均电连接至所述电池组的负极， 并且相面对地分 别设置在所述电池箱的所述两个相对侧壁上且暴露于电池箱的外部； 其中， 所述接线端在所述侧壁上位置设置成这样， 即， 当多个所述 电池模块在进行串联或并联对接时， 所述电池模块的对接侧壁上的两个 接线端都分别与相邻电池模块的对接侧壁上的两个接线端相面对。
本发明具有如下有益效果：
1 )在本发明中， 一定数量的软包装锂离子动力电池设置在箱体内而 形成模块， 保护软包装电池不会被机械损伤；
2 )在本发明中， 通过适当选择模块内电池的电连接方式（串联或并 联）和数量， 可以构成不同规格的电池标准模块；
3 )在本发明中， 通过适当设置电池模块的接线端， 能够简单方便地 将多个电池模块串联或并联固定在一起， 并能够根据用电设备的电压和 功率的需要来适当选择电池模块的连接方式和数量。 ；
4 )在本发明的优选实施方式中，采用板状连接件来电连接电池极耳， 有效改善了接触奈件并降低了接触电阻。
5 )本发明的软包装裡离子动力电池模块简单规范， 保证了电池安全 合理的使用， 充分发挥电池性能。 附图说明
图 1为软包装锂离子动力电池的示意图；
图 2为本发明电池模块的结构示意图， 其中示意性地示出了两个电池 模块， 每个电池模块中包括多个图 1的电池；
图 3为图 2中一个电池模块的剖面图；
图 4(a)示意性地示出了本发明的两个电池模块的并联连接；
图 4(b)示意性地示出了本发明的两个电池模块的串联连接；
图 5(a)示意性地示出了单个电池模块内电池之间的并联连接； 图 5(b)示意性地示出了单个电池模块内电池之间的串联连接。 具体实施方式
图 1示出了在本发明中所使用的软包装锂离子动力电池 3的一个实施 例。 结合图 2和图 3中所示， 在一个实施例中， 该电池 3为具有一定厚度的 扁平状， 在其顶端具有两个极耳 4， 分别为正极耳和负极耳。
更详细地参考图 2和图 3中所示的电池模块， 每个电池模块都包括有 用绝缘材料制成的电池箱 1， 电池箱 1例如是用阻燃 ABS塑料注塑成型。 该电池箱 1为立方体形， 其上端敞开， 以便放入电池組。 可选择地， 该电 池箱 1还可包括用于盖住其敞开口的盖（图中未示出）。 在一个实施例中， 该电池组是由多个电池 3 (在图 2和图 3中是四个电池 3 )沿其厚度方向紧 密组合而成， 电池箱 1的大小做成与该电池组相适应， 以便可以将该电池 组适配地放入该电池箱 1中。 在电池箱 1内部的底面和电池组的底表面之 间可以用粘合剂连接。
电池箱 1在其两个相对的侧壁上总共设有四个开口 5， 每个侧壁上有 两个开口 5, 该开口 5用来容纳或者嵌入电池模块的接线端， 并将该接线 端暴露于电池箱 1的外部。 该接线端可形成为导电接线板， 该接线板与侧 壁平行地设置在开口 5中。
每个电池模块包括两个正极接线端和两个负极接线端， 如图 2所示， 在电池箱 1朝前的侧壁上的两个开口 5中分别设有一个用 （ + )号标识的 正极接线端和一个用 （ - )号标识的负极接线端。 以同样的方式在电池 箱 1朝后的侧壁上设有一个正极接线端和一个负极接线端。 而且， 该两个 正极接线端相互面对且均电连接至电池组的正极， 该两个负极接线端也 相互面对且均电连接至电池组的负极。
电池模块中四个接线端的位置设置在图 4(a)和图 4(b)中看得更清楚， 其中每个图中都示出了两个电池模块， 并用 （ + )号和负 （ - )号分别 表示正极接线端和负极接线端，图中的双箭头表示电连接。 对于每一个电 池模块来说， 两个正极接线端相互面对且分别设置在电池箱的两个相对 侧壁上， 两个负极接线端也相互面对且分别设置在电池箱的两个相对侧 壁上。 如图 4(a)所示， 当两个电池模块并联对接时， 两个电池模块相面 对地以相同的方式放置， 在要进行对接的两个对接侧壁上， 两个正极接 线端相面对并且电连接, 两个负极接线端也同样地相面对并且电连接。 如图 4(b)所示， 当两个电池模块串联对接时， 两个电池模块相面对地放 置， 并且两个电池模块相对于彼此转动了 180度， 这样， 在要进行对接的 两个对接侧壁上， 正极接线端与负极接线端相面对,并且将其中一个正极 接线端和与其相面对的负极接线端电连接。 尽管图 4(a)和图 (b)仅示出了 两个电池模块， 但是本领域的技术人员很容易通过此而理解更多电池模 块的串联或并联连接方式。
在每一个电池模块中， 采用连接件 2来电连接其内的多个电池 3， 如 图 2所示。 连接件 2选择性地将该模块内的多个电池 3的正和负极耳 4电连 接， 以便将该多个电池 3串联或并联成电池组， 并形成电池组的正极和负 极。
在图 5(a)和图 5(b)示出了单个电 块内多个电池 3及其极耳 4的排列 方式， 其中这两个图中用 +号和-号示意性地表示电池 3的正极耳和负极 耳。 如图 5(a)和 5(b)所示， 在电池模块中， 多个电池 3的极耳 4排列成两列。 其中， 在图 5(a)所示的并联情况下， 多个电池 3的正极耳排成一列， 而其 负极耳排列成另一列； 在图 5(b)所示的串联情况下， 多个电池 3的正和负 极耳在两列上均为交错设置。
如图 2以及图 5(a)和图 5(b)所示， 连接件 2包括两块至少局部导电的长 型连接板， 其分别设置在两列极耳上并沿着极耳的排列方向延伸， 并利 用其导电部分选择性地与其所在列中的极耳电连接， 并形成电池组的正 极和负极。 该连接板 2可以与其所在列中的极耳 4机械连接， 以将该连接 板固定在电池组上。
进一步结合图 5(a)和图 5(b)来说明连接板 2和电池 3的极耳 4的选择性 电连接， 图中阴影部分表示连接板 2的导电部分。 在图 5(a)所示的并联情 况下， 所有电池的正极耳均电连接到一个连接板 2， 而所有电池的负极耳 均电连接到另一个连接板 2， 这样两个连接板 2分别形成了电池组的正极 和负极， 从而这两个连接板 2可分别就近与两个正极接线端（ + )和两个 负极接线端 （ -） 电连接， 这对于任意个电池来说都是成立的， 而且在 这种情况下， 连接板 2整体上可都是导电的。
在图 5(b)所示的串联情况下， 每个连接板 2具有局部导电部分（如阴 影部分所示） ， 并利用该局部导电部分与其所在列的极耳电连接， 以形 成串联连接。 可以意识到， 在串联情况下， 当串联电池组中包括奇数个 电池时， 电池组的正极和负极分别位于两个连接板 2上， 这样， 这两个连 接板 2可分别就近与两个正极接线端（ + )和两个负极接线端（ -）电连 接， 正如图 5(b)所示。
当电池模块中的电池组为如图 5(a)或图 5(b)那样为并联电池组或者奇 数个电池的串联电池组时， 如图 2所示， 连接板 2可以与与其邻近的两个 接线板形成为成一体的 U形， 其中， 连接板为该 ϋ的底部， 两个接线板分 别为该 U形的向上弯折部。
当有偶数个电池进行串联连接时， 很容易知道， 电池组的正极和负 极将出现在同一个连接板 2上， 此时就需要分别使用附加的导电连接件将 电池组的正极和负极分别连接至两个正极接线端 （ + )和两个负极接线 端（ - ) 。 该附加的导电连接件优选为电阻较低的导电板或者粗导线。
在形成本发明的电池模块之后， 为了将多个模块如图 4(a)或图 4(b)那 样并联或者串联起来， 还需要使用模块连接组件对相邻两个电池模块的 接线端进行电连接和 /或机械连接。 当模块之间进行并联连接时， 图 4(a) 所示， 在相邻两个电池模块的对接侧壁上， 用模块连接组件将一对正极 接线端电连接同时机械固定， 并用另一个模块连接组件将一对负极接线 端电连接同时机械固定。 当模块之间进行串联连接时， 在相邻两个电池 模块的对接侧壁上只有一组相对的正极接线端和负极接线端需要进行电 连接， 则可用该模块连接组件将这组接线端电连接并机械固定； 而在该 对接侧壁上的另一组相对的正极接线端和负极接线端可只进行机械固 定， 此时， 可在这两个接线端之间设置绝缘片。 在一个实施例中， 该模 栓（未示出）。
下文介绍两个本发明电池模块两个应用实施例。
实施例 1:
选用 4块 100 Ah.4V各项参数一致较好的电池 3， 将其对齐叠好形成电 联起来， 再放入电池箱 1中即成为一个 400Ah. 4V (实为 3.TV ) 的电池模 块，通过侧壁上的接线板上的连接孔 6，用螺栓将 n个 400Ah. 4V模块并联， 便可得到 n*400Ah容量的 4V锂离子电池电源。 若 n个这种模块用螺栓串联 起来， 则得到 n*4V的 400Ah的锂离子电池电源。 电池箱 1是用阻燃 ABS塑 料注塑成型， 其大小刚好能将所选的 4块 lOOAh软包装锂离子电池 3装入。 连接板 2的长度和电池箱 1的厚度一样， 宽度等于电池的极耳 4的宽度， 两 端同向 90°折边高度 20mm, 形成接线板， 接线板上开有 2个连接孔 6， 该 连接板 2用 1mm铜板制成。
实施例 2:
选用 3块 lOOAh. 4V的软包装锂离子电池 3, 将其串联， 叠放整齐， 并将串联电池的正极耳 4和负极耳 4分别各连接一块连接板 2, 再;^ X 电池箱 1， 即成为一个 12V.100Ah的锂离子电池模块。 用 n个这种模块 以螺栓串联起来， 便可得到 12V*n.l00Ah的锂离子电池电源。

Claims

权 利 要 求
1. 一种软包装锂离子动力电池模块， 其特征在于， 所述电池模块包 括'.
电池箱， 其包括用于设置电极接线端的两个相对侧壁；
装配在所述电池箱内的多个软包装鋰离子动力电池， 每个电池都具 有正和负极耳；
连接件， 其选择性地将所述多个电池的正和负极耳电连接， 以便将 所述多个电池串联或并联成电池组， 并形成所述电池组的正极和负极； 两个正极接线端， 均电连接至所述电池组的正极， 并且相面对地分 别设置在所述电池箱的所述两个相对侧壁上且暴露于电池箱的外部；
两个负极接线端， 均电连接至所述电池组的负极， 并且相面对地分 别设置在所述电池箱的所述两个相对侧壁上且暴露于电池箱的外部；
其中， 所述接线端在所述侧壁上位置设置成这样， 即， 当多个所述 电池模块在进行串联或并联对接时， 所述电池模块的对接侧壁上的两个 接线端都分别与相邻电池模块的对接侧壁上的两个接线端相面对。
2. 根据权利要求 1所述的软包装锂离子动力电池模块， 其特征在于， 所述电池组中的多个电池的极耳排列成两列， 其中： 当所述多个电池成 并联时， 所述多个电池的正极耳排列在其中一列上， 所述多个电池的多 个负极耳排列在另一列上； 当所述多个电池成串联时， 所述多个电池的 正和负极耳在所述两列上均为交错排列。
3. 根据权利要求 2所述的软包装锂离子动力电池模块， 其特征在于， 所述连接件包括两块至少局部导电的长型连接板， 其分别设置在所述两 列极耳上并沿着极耳的排列方向延伸， 并利用其导电部分逸择性地与其 所在列中的极耳电连接， 以形成所述电池组的正极和负极。
4. 根据权利要求 3所述的软包装锂离子动力电池模块， 其特征在于， 所述连接板与其所在列中的极耳机械连接。
5. 根据权利要求 3所述的软包装锂离子动力电池模块， 其特征在于， 所述接线端为可导电的接线板， 其设置在所述电池箱侧壁上的开口中并 与所述侧壁平行。
6. 根据权利要求 5所述的软包装锂离子动力电池模块， 其特征在于， 所述电池组为并联电池组或者奇数个电池的串联电池组。
7. 根据权利要求 6所述的软包装锂离子动力电池模块， 其特征在于， 形成所述两个正极接线端的两个接线板与一个长型连接板形成为成一 体， 形成所述两个负极接线端的两个接线板与另一个长型连接板形成为 成一体。
8. 根据权利要求 7所述的软包装裡离子动力电池模块， 其特征在于， 所述一体成形的接线板和连接板为 U形， 其中， 连接板为该 ϋ的底部， 两 个接线板分别为该 U形的向上弯折部。
9. 根据权利要求 5所述的软包装锂离子动力电池模块， 其特征在于， 所述电池组为偶数个电池的串联电池组。
10.根据权利要求 9所述的软包装锂离子动力电池模块，其特征在于， 所述正极接线端与电池组正极通过附加的导电连接件电连接， 所述负极 接4线端与电池组负极通过附加的导电连接件电连接。
11.根据权利要求 5所述的软包装锂离子动力电池模块，其特征在于， 还包括将用于所述电池模块的接线端与相邻电池模块的接线端进行电连 接和 /或机械连接的模块连接组件。
12. 根据权利要求 11所述的软包装锂离子动力电池模块， 其特征在 于， 所述模块连接组件包括设在所述接线端内的连接孔以及适于容纳在 该连接孔内的螺栓。
13.根据权利要求 1所述的软包装锂离子动力电池模块，其特征在于， 所述电池箱由绝缘材料制成。
14.根据权利要求 1所述的软包装锂离子动力电池模块，其特征在于， 所述电池箱为一端可敞开的立方体形。
15. 根据权利要求 1 所述的软包装锂离子动力电池模块， 其特征在 于， 所述电池为具有一厚度的扁平状， 所述多个电池沿其厚度方向紧密 组合成所述电池组。
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CN106784569A (zh) * 2017-01-17 2017-05-31 华霆（合肥）动力技术有限公司 便于维修的电源装置及供电系统
CN106784569B (zh) * 2017-01-17 2023-08-15 华霆（合肥）动力技术有限公司 便于维修的电源装置及供电系统
CN108987620A (zh) * 2018-08-07 2018-12-11 广州小鹏汽车科技有限公司 一种电池及电池模组

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CN101401227A (zh) 2009-04-01
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