WO2022095811A1 - 一种刚性锂电池组的制备方法 - Google Patents

一种刚性锂电池组的制备方法 Download PDF

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Publication number
WO2022095811A1
WO2022095811A1 PCT/CN2021/127822 CN2021127822W WO2022095811A1 WO 2022095811 A1 WO2022095811 A1 WO 2022095811A1 CN 2021127822 W CN2021127822 W CN 2021127822W WO 2022095811 A1 WO2022095811 A1 WO 2022095811A1
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Prior art keywords
lithium battery
battery pack
accommodating
rigid
central
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PCT/CN2021/127822
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English (en)
French (fr)
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吕永安
阮克荣
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厦门致力金刚石科技股份有限公司
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Publication of WO2022095811A1 publication Critical patent/WO2022095811A1/zh

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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
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • 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
    • H01M10/058—Construction or manufacture
    • 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
    • H01M10/60—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
    • H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the invention relates to the field of lithium batteries, in particular to a preparation method of a rigid lithium battery pack.
  • Lithium battery refers to a battery containing lithium (including metal lithium, lithium alloys, lithium ions, and lithium polymers) in an electrochemical system.
  • Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium ion batteries.
  • Lithium metal batteries are generally non-rechargeable and contain lithium in a metallic state.
  • Lithium-ion batteries do not contain lithium in the metallic state and are rechargeable.
  • the existing lithium batteries usually refer to rechargeable lithium ion batteries.
  • the used lithium battery components usually combine multiple lithium battery cells in series and parallel to achieve a suitable output power supply. If the body is spliced and assembled separately, it has defects such as difficult packaging and poor heat dissipation. Changes are required.
  • the present invention provides a preparation method of a rigid lithium battery pack, and the lithium battery pack prepared by the method can effectively improve the above problems.
  • a preparation method of a rigid lithium battery pack comprising the following steps:
  • A1 provide an accommodating lower shell, the accommodating lower shell has an accommodating groove, and the accommodating groove is provided with a central pipe, so that the accommodating groove is in an annular structure, and the central hole of the central pipe penetrates to the accommodating lower the bottom of the shell;
  • A3 provide an upper cover plate, seal the upper cover plate to the upper opening of the accommodating lower case, and then seal the cells in the accommodating groove, and the upper cover plate has an opening corresponding to the center hole of the center tube Bit port; and then form a lithium battery cell;
  • A4 provide a connecting cord, and pass the connecting cord through the central tube of a plurality of lithium battery cells to form a lithium battery pack.
  • connection cord is an independent cord, and the connection cord passes through the central tubes of a plurality of lithium battery cells in sequence to form a linear lithium battery pack.
  • step A4 the number of the connection cords is multiple, the multiple connection cords form a mesh structure, and the connection cords of each interlacing point are formed by passing through the central tube of the lithium battery cell to form a fixed structure. , and then form a mesh-shaped lithium battery pack.
  • step A5 of electrically connecting a plurality of lithium battery cells of the same lithium battery pack.
  • the material of the central tube is a thermally conductive material
  • the connecting wire is a metal wire
  • the connecting wire is in thermal contact with the central tube.
  • the connecting wire rope is a steel wire rope.
  • the central tube is a metal tube.
  • the accommodating lower shell and the central tube are integrally connected.
  • the lower accommodating shell and the central tube are integrally formed by casting with a mold.
  • the accommodating lower shell includes an annular wall and a lower plate that is sealed and assembled to the lower opening of the annular wall, the central tube is connected to the lower plate, and the annular wall, the lower plate and the central tube are jointly enclosed to form an annular shape. accommodating slot.
  • the preparation method is simple in process and easy to implement.
  • the lithium battery pack prepared by this method has the following advantages:
  • the central tube and the connecting wire can be made of thermally conductive material.
  • the heat emitted by the lithium battery can be conducted to the connecting wire through the central tube, and then dissipated through the connecting wire, adding a heat dissipation channel, and the heat conduction and heat dissipation effect are better;
  • the lithium battery pack is connected by a connecting cord, which has good overall flexibility and can be arranged in different shapes for assembly, with good applicability;
  • the whole lithium battery pack can be put into the plate and other components, and the lithium battery cell can be effectively fixed by tightening the connecting wire, so that it is not easy to shake and the structure is more stable; at the same time, the flexible structure of the connecting wire is all It can be well assembled into plates with different degrees of curvature; and the connecting wire acts as a reinforcing structure similar to a reinforcing rib to the plate, which can effectively strengthen the strength of the plate and other components.
  • Fig. 1 is a flow chart showing the preparation method of the rigid lithium battery pack in the first embodiment
  • Fig. 2 shows the structural appearance schematic diagram of step A1 in the first embodiment
  • Fig. 3 shows the structural cross-sectional view of step A1 in the first embodiment
  • step A2 is a schematic view of the structure and appearance of step A2 in the first embodiment
  • Fig. 5 shows the structural cross-sectional view of step A2 in the first embodiment
  • step A4 is a schematic view of the structure and appearance of step A4 in the first embodiment
  • Fig. 7 shows the structural cross-sectional view of step A4 in the first embodiment
  • FIG. 8 is a schematic diagram of the appearance structure of the linear lithium battery pack according to the embodiment.
  • FIG. 9 is a partial structural cross-sectional view of the linear lithium battery pack of the embodiment.
  • FIG. 10 is a schematic diagram of the operation of the linear lithium battery pack according to the embodiment.
  • FIG. 11 is a schematic diagram showing the appearance structure of the linear lithium battery pack of the second embodiment.
  • a method for preparing a rigid lithium battery pack includes the following steps:
  • A1 provide an accommodating lower shell, the accommodating lower shell is shown in FIG. 2 and FIG. 3 , the accommodating lower shell has an accommodating groove 102, and the accommodating groove 102 is provided with a central tube 20, so that the The accommodating groove 102 has an annular structure, and the central hole 21 of the central tube 20 penetrates to the bottom of the accommodating lower shell.
  • the accommodating lower shell includes an annular wall 13 and a lower plate 12 sealed and assembled to the lower opening of the annular wall 13 , the central pipe 20 is connected to the lower plate 12 , and the annular wall 13 , the lower plate 12 and the central tube 20 together form an annular accommodating groove 102 .
  • the accommodating lower shell and the central tube 20 are integrally connected, and more specifically, they are integrally formed by casting with a mold, which is simple and fast to prepare.
  • each component may be an independent structure, which is subsequently spliced through processes such as welding.
  • A2 place the battery cell 30 in the accommodating groove 102 for accommodating the lower case, as shown in FIG. 4 and FIG. 5 .
  • the battery cell 30 is in the prior art and will not be described in detail here.
  • A3 provide an upper cover plate 11, seal the upper cover plate 11 to the upper opening of the accommodating lower case, and then seal the cells 30 in the accommodating groove 102, and the upper cover plate 11 has a corresponding central tube
  • the opening 111 of the central hole 21 of the 20 is formed; the lithium battery unit 100 as shown in FIG. 6 and FIG. 7 is further formed, and the packaging of a single lithium battery is completed.
  • the annular wall 13 is an annular wall, and when the upper cover plate 11 is covered with the lower housing, a cylindrical container is formed together.
  • a cylindrical container is formed together.
  • it is not limited to this, and it may also be a structure such as a square column.
  • A4 providing a connecting wire 40, and passing the connecting wire 40 through the central tube 20 of the plurality of lithium battery cells 100 to form a lithium battery pack 200.
  • the connecting cords 40 are sequentially passed through the central tubes 20 of the plurality of lithium battery cells 100 .
  • the number of the connecting cords 40 is a single one.
  • the connecting ropes 40 pass through the central tubes 20 of the five lithium battery cells 100 in sequence to form a linear lithium battery pack 200 .
  • the rigid lithium battery pack prepared by this method can be pre-fixed and assembled for a plurality of lithium battery cells 100, which is convenient for subsequent packaging; the lithium battery pack is connected by connecting wires 40, and the overall flexibility is good and can be arranged into different shapes Assembly, such as straight, "U” or “L” shape, etc., good applicability.
  • the preparation method has the advantages of simple process, easy realization and good preparation efficiency.
  • step A5 is also included, in which a plurality of lithium battery cells 100 of the same lithium battery pack 200 are electrically connected (eg, connected in series and in parallel) to form a power supply assembly, which saves the need for subsequent specific use and assembly.
  • the cumbersome operation of electrical connection is performed again, and the operation is more convenient; and the pre-fixed connection through the connecting wire 40 makes the structure of the electrical connection in advance more stable.
  • electrical connection and the like may also be performed during specific application and installation.
  • the electrodes of the cells are drawn out by conventional means in the prior art.
  • the positive and negative electrodes of the core are connected to the leading end of the upper cover plate 11 , etc.; this is already known by those skilled in the art, and will not be described in detail here.
  • the materials of the lower housing, the upper cover plate 11 , the central tube 20 and the connecting wire 40 are They are all thermally conductive materials.
  • the lower housing, the upper cover plate 11 and the center tube 20 are all made of metal materials such as steel or aluminum.
  • the connecting wire 40 is a metal wire such as a steel wire rope. Thermal contact is made with the central tube 20 .
  • one of the heat dissipation paths of the heat released by the lithium battery can be conducted to the lower housing (ie the annular wall 13 and the lower layer plate 12 ) and the upper cover plate 11 for heat dissipation, and the other heat dissipation path is conducted to the center.
  • the tube 20 is then conducted from the central tube 20 to the connecting wire 40, and the heat is dissipated through the connecting wire 40, which greatly improves the heat dissipation function of the lithium battery.
  • it is not limited to this in other embodiments.
  • the lithium battery pack 200 is applied into the plate, that is, a plurality of accommodating cavities are formed in the plate body 300 (not shown), the lithium battery cells 100 of the lithium battery pack 200 are sequentially placed in a plurality of accommodating cavities of the plate body 300 , and the ends of the connecting wires 40 are fixed to the outer ends of the plate body 300 .
  • 10 lithium battery packs 200 are arranged side by side in a plate body 300 , that is, the plate body 300 accommodates 50 lithium battery cells 100 .
  • This arrangement has the following advantages: 1. It can effectively save space, that is, save the space for additional arrangement of lithium batteries; 2. After the end of the connecting cord 40 is fixed, it can be tightened to further fix the lithium battery cell 100, the lithium battery The battery cell 100 is not easy to shake, the structure is more stable, and the lithium battery cell 100 does not need to be fixed by means of glue injection, which is convenient for disassembly and maintenance of the lithium battery; 3. The battery can be well connected by operating the connecting cord 40 It is easy to operate for disassembly and maintenance; 4. The flexible structure of the connecting wire rope 40 can be well assembled into plates with different degrees of curvature, and has strong applicability; 5. The connecting wire rope 40 can strengthen the plate like a rib The structure can effectively strengthen the strength of the plate. The above-mentioned plate structure can be well applied to a car body or a ship hull.
  • the application of the lithium battery pack 200 is not limited to this.
  • the preparation method of the rigid lithium battery pack provided in this embodiment is substantially the same as the preparation method of the rigid lithium battery pack provided in the first embodiment, the difference is that in step A4, the number of the connecting wires 40 There are multiple connection cords 40 to form a mesh structure, and the connection cords at each interwoven point are formed and fixed by passing through the central tube 20 of the lithium battery cell 100, thereby forming a mesh as shown in FIG. 11 .
  • the meshed lithium battery pack 400 has the same technical effect as the linear lithium battery pack 200 in the first embodiment. Compared with the linear lithium battery pack 200, the 400 has a better reinforcing rib effect.
  • the preparation method of a rigid lithium battery pack provided in this embodiment is substantially the same as the preparation method of the rigid lithium battery pack provided in Embodiment 1 or Embodiment 2, and the difference is that the container provided in Step A1
  • There are two central tubes 20 in the lower shell (of course, there may be more than two in other embodiments).
  • the central hole 21) of each lithium battery cell 100 can be respectively pierced with a connecting wire 40 to form a linear or meshed lithium battery pack. That is, when the combination is a linear lithium battery pack, two independent connection cords 40 are arranged side by side and are respectively penetrated through the two through holes of the lithium battery cell 100. As shown in FIG.
  • the single connection cord 40 becomes side by side. the second root.
  • the two connecting wires 40 of each interweaving point are respectively passed through the two through holes of each lithium battery cell 100, that is, the two connecting wires 40 of each interleaving point as shown in FIG. 11 .
  • the structure in which one connecting wire 40 is simultaneously threaded into one central tube 20 becomes that two connecting wires 40 at each interweaving point are respectively threaded into the two central tubes 20 .

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  • Manufacturing & Machinery (AREA)
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Abstract

本发明提供一种刚性锂电池组的制备方法，包括如下步骤：A1，提供一容置下壳，所述容置下壳具有一容置槽，且容置槽内设有中心管，进而使容置槽呈环形结构，中心管的中心孔贯通至容置下壳的底部；A2，将电芯放置于容置下壳的容置槽内；A3，提供一上层盖板，将上层盖板密封盖合于容置下壳的上开口，进而将容置槽内的电芯密封，所述上层盖板上具有对应中心管的中心孔的让位口；进而形成锂电池单体；A4，提供连接线绳，将连接线绳穿过多个锂电池单体的中心管，形成锂电池组。该制备方法简单、容易实现，锂电池组运用前景好。

Description

一种刚性锂电池组的制备方法 技术领域
本发明涉及锂电池领域，具体涉及一种刚性锂电池组的制备方法。
背景技术
锂电池(Lithium battery)是指电化学体系中含有锂(包括金属锂、锂合金和锂离子、锂聚合物)的电池。锂电池大致可分为两类：锂金属电池和锂离子电池。锂金属电池通常是不可充电的，且内含金属态的锂。锂离子电池不含有金属态的锂，并且是可以充电的。而现有中的锂电池通常是指可以充电的锂离子电池。
现有技术中，所用到的锂电池组件通常是将多个锂电池单体进行串并联组合，以达到符合的输出电源，所组合的多个锂电池单体，均是将一个个锂电池单体进行单独拼接装配的，具有封装难度较大、散热性较差等缺陷。需要进行改变。
发明内容
为此，本发明提供一种刚性锂电池组的制备方法，通过该方法所制备出的锂电池组能够有效的改善上述问题。
为实现上述目的，本发明提供的技术方案如下：
一种刚性锂电池组的制备方法，包括如下步骤：
A1，提供一容置下壳，所述容置下壳具有一容置槽，且容置槽内设有中心管，进而使容置槽呈环形结构，中心管的中心孔贯通至容置下壳的底部；
A2，将电芯放置于容置下壳的容置槽内；
A3，提供一上层盖板，将上层盖板密封盖合于容置下壳的上开口，进而将容置槽内的电芯密封，所述上层盖板上具有对应中心管的中心孔的让位口；进而形成锂电池单体；
A4，提供连接线绳，将连接线绳穿过多个锂电池单体的中心管，形成锂电池组。
进一步的，步骤A4中，所述连接线绳为独立的绳索，所述连接线绳依次穿过多个锂电池单体的中心管而形成线状的锂电池组。
进一步的，步骤A4中，所述连接线绳的数量为多根，多根连接线绳组成网状结构，且每个交织点的连接线绳由穿过锂电池单体的中心管而形成固定，进而形成网状的锂电池组。
进一步的，还包括步骤A5，对同一锂电池组的多个锂电池单体进行电性连接。
进一步的，所述中心管的材质为导热性材质，所述连接线绳为金属线绳，所述连接线绳与中心管形成热接触。
进一步的，所述连接线绳为钢丝线绳。
进一步的，所述中心管为金属管。
进一步的，所述容置下壳和中心管为一体连接结构。
进一步的，所述容置下壳和中心管通过模具浇注一体成型。
进一步的，所述容置下壳包括环形壁和密封装配于环形壁的下开口的下层板，所述中心管连接于下层板上，所述环形壁、下层板和中心管共同围合形成环形的容置槽。
通过本发明提供的技术方案，具有如下有益效果：
本制备方法工艺简单，容易实现。通过该方法制备出的锂电池组，具有如下优势：
1.中心管和连接线绳可采用导热材质，锂电池单体发出的热量能够经中心管传导至连接线绳，再通过连接线绳散出，增加一散热通道，导热、散热效果更好；
2.可对多个锂电池单体进行预固定装配，方便后续封装；
3.锂电池组采用连接线绳进行穿接，整体柔性好，可排布成不同形状进行装配，适用性好；
4.组合方式多样，可组合成线状或者网状结构，以适应不同的封装方式；
5.可将整体锂电池组放入板材等部件内，通过拉紧连接线绳的方式能够有效固定住锂电池单体，使其不易晃动，结构更稳定；同时，连接线绳的柔性结构均能够很好的装配至不同弯曲度的板材内；且连接线绳对板材起到类似加强筋的加强结构，能够有效的加强板材等部件的强度。
附图说明
图1所示为实施例一中刚性锂电池组的制备方法的流程框图；
图2所示为实施例一中步骤A1的结构外观示意图；
图3所示为实施例一中步骤A1的结构剖视图；
图4所示为实施例一中步骤A2的结构外观示意图；
图5所示为实施例一中步骤A2的结构剖视图；
图6所示为实施例一中步骤A4的结构外观示意图；
图7所示为实施例一中步骤A4的结构剖视图；
图8所示为实施例一线状的锂电池组的外观结构示意图；
图9所示为实施例一线状的锂电池组中的部分结构剖视图；
图10所示为实施例一线状的锂电池组的运用示意图；
图11所示为实施例二线状的锂电池组的外观结构示意图。
具体实施方式
为进一步说明各实施例，本发明提供有附图。这些附图为本发明揭露内容的一部分，其主要用以说明实施例，并可配合说明书的相关描述来解释实施例的运作原理。配合参考这些内容，本领域普通技术人员应能理解其他可能的实施方式以及本发明的优点。图中的组件并未按比例绘制，而类似的组件符号通常用来表示类似的组件。
现结合附图和具体实施方式对本发明进一步说明。
参照图1所示，本实施例提供的一种刚性锂电池组的制备方法，包括如下步骤：
A1，提供一容置下壳，该容置下壳参照图2、图3所示，所述容置下壳具有一容置槽102，且容置槽102内设有一中心管20，进而使容置槽102呈环形结构，中心管20的中心孔21贯通至容置下壳的底部。
具体的，本实施例中，所述容置下壳包括环形壁13和密封装配于环形壁13的下开口的下层板12，所述中心管20连接于下层板12上，所述环形壁13、下层板12和中心管20共同围合形成环形的容置槽102。
再具体的，所述容置下壳和中心管20为一体连接结构，再具体为通过模具浇注的方式一体成型，制备简便、快速。当然的，在其它实施例中，各部件可均为独立结构，后续通过焊接等工艺进行拼接。
A2，将电芯30放置于容置下壳的容置槽102内，如图4、图5所示。
具体的，电芯30为现有技术，在此不再详述。
A3，提供一上层盖板11，将上层盖板11密封盖合于容置下壳的上开口，进而将容置槽102内的电芯30密封，所述上层盖板11上具有对应中心管20的中心孔21的让位口111；进而形成如图6、图7所示的锂电池单体100，完成单个锂电池的封装。
具体的，环形壁13为圆环形的壁，当上层盖板11盖合于容置下壳后，共同形成一个圆柱形的容器。当然的，在其它实施例中不局限于此，也可以是方柱形等结构。
A4，提供连接线绳40，将连接线绳40穿过多个锂电池单体100的中心管20，形成锂电池组200。
参照图8、图9所示，将连接线绳40依次穿过多个锂电池单体100的中心管20，具体的，具体如图8所示，所述连接线绳40的数量为单根独立的绳索，该连接线绳40依次穿过五个锂电池单体100的中心管20而形成线状的锂电池组200。
通过该方法制备的刚性锂电池组，可对多个锂电池单体100进行预固定装配，方便后续封装；锂电池组采用连接线绳40进行穿接，整体柔性好，可排布成不同形状进行装配，如直线型、“U”型或“L”型等等，适用性好。且该制备方法工艺简单，容易实现，制备效率好。
进一步的，本实施例中，还包括步骤A5，对同一锂电池组200的多个锂电池单体100进行电性连接(如串并联连接)，形成一个电源组件，省去后续具体运用装配时再进行电性连接的繁琐操作，操作更为简便；且因通过连接线绳40 的预固定连接，使得该预先进行电性连接的结构更为稳定。当然的，在其它实施例中，也可以在具体运用安装时再进行电性连接等。
再具体的，锂电池单体100中，电芯的电极引出采用的是现有技术中的常规手段，如在上层盖板11设置引出端，在进行盖合上层盖板11的同时，将电芯的正负极与上层盖板11的引出端相连等；此是是本领域的技术人员早已掌握的，在此不再详述。
进一步的，本实施例中，更为优选的，为了更好的对锂电池进行散热，本实施例中，所述容置下壳、上层盖板11、中心管20以及连接线绳40的材质均为导热性材质，如容置下壳、上层盖板11和中心管20均为钢或铝等金属材质，所述连接线绳40为金属线绳，如钢丝绳等，所述连接线绳40与中心管20形成热接触。如此，锂电池工作时放出的热量，可其中一条散热路径为通过传导至容置下壳(即环形壁13和下层板12)和上层盖板11进行散热，另一条散热路径为通过传导至中心管20，再从中心管20传导至连接线绳40上，通过连接线绳40进行散热，极大的提高了锂电池的散热功能。当然的，在其它实施例中不局限于此。
进一步的，本实施例中，参照图10所示，作为该方法制备的刚性锂电池组的一种运用，将锂电池组200运用至板材内，即板材本体300内形成有多个容置腔(未示出)，所述锂电池组200的锂电池单体100依次置于板材本体300的多个容置腔内，其连接线绳40的端部固定于板材本体300的外端部。具体如图10所示，一个板材本体300内并排布置有10个锂电池组200，即该板材本体300内容纳有50个锂电池单体100。
如此设置，具有如下优势：1.能够有效的节省空间，即省去额外布置锂电 池的空间；2.连接线绳40的端部固定后能够进行拉紧，进一步固定锂电池单体100，锂电池单体100不易晃动，结构更稳定，且不用通过注胶等手段固定住锂电池单体100，便于锂电池的拆装维护；3.通过对连接线绳40的操作即可很好对电池进行拆装维护，操作简便；4.连接线绳40的柔性结构均能够很好的装配至不同弯曲度的板材内，适用性强；5.连接线绳40对板材起到类似加强筋的加强结构，能够有效的加强板材的强度。上述板材结构能够很好的运用于车体或船体等。
当然的，在其它实施例中，锂电池组200的运用不局限于此。
实施例二
本实施例提供的一种刚性锂电池组的制备方法，与实施例一中所提供的刚性锂电池组的制备方法大致相同，不同之处在于，步骤A4中，所述连接线绳40的数量为多根，多根连接线绳40组成网状结构，且每个交织点的连接线绳由穿过锂电池单体100的中心管20而形成固定，进而形成如图11所示的网状的锂电池组400。该网状的锂电池组400与实施例一中线状的锂电池组200具有相同的技术效果，同时，在一些运用领域，如像实施例一中封装在板材内时，网状的锂电池组400相较于线状的锂电池组200，其起到的加强筋作用更为优异。
实施例三
本实施例提供的一种刚性锂电池组的制备方法，与实施例一或实施例二中所提供的刚性锂电池组的制备方法大致相同，不同之处在于，步骤A1中所提供的容置下壳内的中心管20设置有二个(当然的，在其它实施例中也可以大于二个)，如此，在完成制备锂电池单体100中具有二个通孔(即二个中心管20的中心孔21)，每个锂电池单体100的二个通孔可分别穿设一根连接线绳40进行 组合线状或网状的锂电池组。即组合呈线状锂电池组时，二根独立的连接线绳40并排设置分别穿设于锂电池单体100的二个通孔内，如附图8中单根连接线绳40变成并排的二根。组合成网状的锂电池组时，每个交织点的二根连接线绳40分别穿设于每个锂电池单体100的二个通孔内，即如图11中每个交织点的二根连接线绳40同时穿入一个中心管20的结构变成每个交织点的二根连接线绳40分别穿设于二个中心管20内。
尽管结合优选实施方案具体展示和介绍了本发明，但所属领域的技术人员应该明白，在不脱离所附权利要求书所限定的本发明的精神和范围内，在形式上和细节上可以对本发明做出各种变化，均为本发明的保护范围。

Claims (10)

  1. 一种刚性锂电池组的制备方法，其特征在于，包括如下步骤：
    A1，提供一容置下壳，所述容置下壳具有一容置槽，且容置槽内设有中心管，进而使容置槽呈环形结构，中心管的中心孔贯通至容置下壳的底部；
    A2，将电芯放置于容置下壳的容置槽内；
    A3，提供一上层盖板，将上层盖板密封盖合于容置下壳的上开口，进而将容置槽内的电芯密封，所述上层盖板上具有对应中心管的中心孔的让位口；进而形成锂电池单体；
    A4，提供连接线绳，将连接线绳穿过多个锂电池单体的中心管，形成锂电池组。
  2. 根据权利要求1所述的刚性锂电池组的制备方法，其特征在于：步骤A4中，所述连接线绳为独立的绳索，所述连接线绳依次穿过多个锂电池单体的中心管而形成线状的锂电池组。
  3. 根据权利要求1所述的刚性锂电池组的制备方法，其特征在于：步骤A4中，所述连接线绳的数量为多根，多根连接线绳组成网状结构，且每个交织点的连接线绳由穿过锂电池单体的中心管而形成固定，进而形成网状的锂电池组。
  4. 根据权利要求1所述的刚性锂电池组的制备方法，其特征在于：还包括步骤A5，对同一锂电池组的多个锂电池单体进行电性连接。
  5. 根据权利要求1所述的刚性锂电池组的制备方法，其特征在于：所述容置下壳、上层盖板、中心管以及连接线绳的材质均为导热性材质，所述连接线绳与中心管形成热接触。
  6. 根据权利要求5所述的刚性锂电池组的制备方法，其特征在于：所述连接线绳为钢丝线绳。
  7. 根据权利要求5所述的刚性锂电池组的制备方法，其特征在于：所述容置下壳、上层盖板和中心管均为金属材质。
  8. 根据权利要求1所述的刚性锂电池组的制备方法，其特征在于：所述容置下壳和中心管为一体连接结构。
  9. 根据权利要求8所述的刚性锂电池组的制备方法，其特征在于：所述容置下壳和中心管通过模具浇注一体成型。
  10. 根据权利要求1所述的刚性锂电池组的制备方法，其特征在于：所述容置下壳包括环形壁和密封装配于环形壁的下开口的下层板，所述中心管连接于下层板上，所述环形壁、下层板和中心管共同围合形成环形的容置槽。
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