WO2022062173A1 - 一种电池单体及电池组 - Google Patents

一种电池单体及电池组 Download PDF

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Publication number
WO2022062173A1
WO2022062173A1 PCT/CN2020/133148 CN2020133148W WO2022062173A1 WO 2022062173 A1 WO2022062173 A1 WO 2022062173A1 CN 2020133148 W CN2020133148 W CN 2020133148W WO 2022062173 A1 WO2022062173 A1 WO 2022062173A1
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WO
WIPO (PCT)
Prior art keywords
battery
heat exchange
end cover
joint
battery cell
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PCT/CN2020/133148
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English (en)
French (fr)
Inventor
卢海军
李澎栋
Original Assignee
中山市小万能源科技有限公司
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Application filed by 中山市小万能源科技有限公司 filed Critical 中山市小万能源科技有限公司
Priority to US17/310,511 priority Critical patent/US20220238941A1/en
Priority to JP2021533357A priority patent/JP7374194B2/ja
Priority to DE212020000648.2U priority patent/DE212020000648U1/de
Publication of WO2022062173A1 publication Critical patent/WO2022062173A1/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
    • H01M10/60—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
    • H01M10/61—Types of temperature control
    • H01M10/615—Heating or keeping warm
    • 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
    • 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
    • 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

Definitions

  • the present invention relates to a battery cell and a battery pack.
  • the general battery can only use the shell wrapped outside the cell assembly for heat exchange, and its heat exchange effect is poor.
  • the internal temperature of the battery is too high, the accumulation of heat in the battery will lead to battery charge and discharge efficiency and reliability.
  • the internal temperature of the battery is too low, both of which will affect the utilization efficiency and reliability of electric energy.
  • the present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the present invention provides a battery cell with good heat exchange.
  • the invention also provides a battery pack, each battery cell of the battery pack can achieve a good heat exchange effect and improve the energy utilization rate of the battery pack.
  • a battery cell includes: a cylindrical body, two ends of the cylindrical body are respectively provided with a first end cover and a second end cover, the cylindrical body, the The first end cover and the second end cover define an accommodating space, and the battery core assembly is arranged in the accommodating space; the heat exchange tube is passed through the first end cover and the second end cover , the heat exchange tube runs through the accommodating space, and the outer wall of the heat exchange tube is in contact with the battery core assembly.
  • the above battery cell is provided with a heat exchange tube running through its interior, the tube wall of the heat exchange tube is in contact with the cell assembly, and the heat exchange tube communicates with the external low-temperature fluid to exchange heat with the cell assembly.
  • Part of the heat is used to avoid the increase of the internal temperature of the battery cell, which will reduce the efficiency and reliability of the battery's charge and discharge.
  • the components heat up rapidly, thereby improving the power utilization efficiency of the battery cells.
  • the heat exchange tube includes a central tube, a first joint and a second joint, and the first end cap and the second end cap are respectively provided with corresponding fittings for the central tube.
  • the first installation hole and the second installation hole are matched, the first joint is detachably connected to one end of the central tube and pressed against the first end cover, and the second joint is detachably connected to the The other end of the central tube is pressed on the second end cap, and the interior of the first joint and the second joint are respectively provided with a first through hole and a second through hole communicating with the interior of the central tube through hole.
  • both ends of the central pipe are screwed with the first joint and the second joint, respectively.
  • the battery cell further includes a first sealing member and a second sealing member, the first sealing member is sealingly disposed between the first joint and the first end cap, the A second seal is sealed between the second joint and the second end cap.
  • the first end cap is provided with a connecting sleeve for connecting the second end cap of another battery cell.
  • the first end cap is provided with a first internal thread
  • the second end cap is provided with a second internal thread
  • the connection sleeve is provided with a connection with the first internal thread
  • the first external thread is threadedly connected
  • the connecting sleeve is provided with a second external thread matching the second internal thread
  • the present invention also provides a battery pack, comprising at least two battery cells according to any one of the above technical solutions, the battery cells are connected in series through a connecting kit, and the heat exchange on the adjacent battery cells The tubes communicate with each other.
  • the above battery pack includes at least two battery cells, the battery cells are connected in series through a connecting kit, and the heat exchange tubes on the adjacent battery cells are connected to each other, and the heat exchange tubes from one end of the battery pack are exchanged. After the external fluid is input into the heat pipe, the fluid can be output from the heat exchange pipe at the other end of the battery pack, thereby exchanging heat for all the battery cells of the battery pack.
  • a closed cavity is enclosed between the adjacent battery cells and the corresponding connecting sleeve, and the heat exchange tubes are all communicated with the closed cavity.
  • a side wall of the connection kit is provided with a through hole that communicates the closed chamber with the outside, and a sealing plug for sealing the through hole is detachably installed in the through hole.
  • the adjacent heat exchange tubes are connected through a third connection head, and the interior of the third connection head is provided with a connection with the interior of the adjacent heat exchange tubes. inner hole channel.
  • FIG. 1 is a schematic diagram of the internal structure of an embodiment of a battery cell of the present invention
  • FIG. 2 is a schematic diagram of the internal structure of an embodiment of the battery pack of the present invention.
  • FIG. 3 is a schematic diagram of the internal structure of another embodiment of the battery pack of the present invention.
  • orientation descriptions are involved, such as the terms “upper”, “lower”, “front”, “rear”, “left”, “right”, “vertical”, “horizontal” “,” “top”, “bottom”, “inside”, “outside” and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating Or imply that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.
  • the meaning of several is one or more, the meaning of multiple is two or more, greater than, less than, exceeding, etc. are understood as not including this number, above, below, within, etc. are understood as including this number. If it is described that the first and the second are only for the purpose of distinguishing technical features, it cannot be understood as indicating or implying relative importance, or indicating the number of the indicated technical features or the order of the indicated technical features. relation.
  • connection should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrally connected; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or the internal communication between the two components.
  • connection should be understood in specific situations.
  • a battery cell according to the first aspect of the embodiments of the present invention includes: a cylindrical body 100 , two ends of the cylindrical body 100 are respectively provided with a first end cap 200 and a second end cap 300 , the cylinder body 100, the first end cover 200 and the second end cover 300 define an accommodating space, and the accommodating space is provided with the battery core assembly 400; the heat exchange tube 500 is passed through the On the first end cover 200 and the second end cover 300 , the heat exchange tube 500 penetrates the accommodating space, and the outer wall of the heat exchange tube 500 is in contact with the cell assembly 400 .
  • the above battery cells are provided with a heat exchange tube 500 running through the inside thereof. The tube wall of the heat exchange tube 500 is in contact with the cell assembly 400.
  • the heat exchange tube 500 communicates with the external low-temperature fluid and exchanges heat with the cell assembly 400, which can be taken away. Part of the heat generated by the battery cell assembly 400 can avoid the situation that the internal temperature of the battery cell increases and the battery charging and discharging efficiency and reliability are reduced. Under extremely cold conditions, the battery cell assembly 400 can be quickly heated up, thereby improving the power utilization efficiency.
  • the heat exchange tube 500 includes a central tube 510 , a first joint 520 and a second joint 530 , the interiors of the first joint 520 and the second joint 530 are respectively There are a first through hole 521 and a second through hole 531 that communicate with the inside of the central pipe 510 .
  • One end cover 200 and the second end cover 300 are respectively provided with a first installation hole and a second installation hole which are adapted to the center tube 510 , and the first installation hole and the second installation hole are respectively provided for the center tube 510
  • the two ends of the first joint 520 are detachably connected to one end of the central pipe 510 and pressed against the first end cover 200, and the second joint 530 is detachably connected to the central pipe
  • the other end of 510 is pressed on the second end cap 300.
  • the first joint 520 and the second joint 530 can not only fix the central tube 510 inside the battery cell, but also connect the first end cap 200 to the cylinder.
  • the connection between the bodies 100 and the connection between the second end cap 300 and the cylindrical body 100 play a role of reinforcement.
  • two ends of the central pipe 510 are respectively connected with the first joint 520 and the second joint 530 by screw threads.
  • the battery cell further includes a first sealing member 540 and a second sealing member 550,
  • the first sealing member 540 is sealingly disposed between the first joint 520 and the first end cap 200
  • the second sealing member 550 is sealingly disposed between the second joint 530 and the second end cap between 300.
  • the first end cover 200 is provided with a connection kit 600 for connecting the second end cover 300 of another battery cell, thereby realizing A plurality of battery cells are connected.
  • the first end cover 200 is provided with a first internal thread 220
  • the second end cover 300 is provided with a second internal thread 320
  • the connection sleeve 600 is provided with a
  • the first external thread 610 connected to the first internal thread 220 is provided with a second external thread 620 matched with the second internal thread 320 on the connection sleeve 600 . That is, two adjacent battery cells are connected through a threaded structure, and the number of the battery cells connected in series can be freely adjusted, and when only one battery cell is used, the connection kit 600 can also be removed from the battery cell. ,It does not affect the use of.
  • the cell assembly 400 includes a winding core assembly and an electrolyte solution located in the accommodating space, and the first end cap 200 and/or the second end cap 300 are on the A liquid injection port is provided, and a safety valve 700 is detachably installed on the liquid injection port.
  • the present invention also provides a battery pack, comprising at least two battery cells according to any of the above technical solutions, the battery cells are connected in series through the connection kit 600 in sequence, and adjacent battery cells are connected in series.
  • the heat exchange tubes 500 above are connected. After the above battery pack inputs external fluid from the heat exchange tube 500 at one end, the fluid can be output from the heat exchange tube 500 at the other end of the battery pack, thereby exchanging heat for all battery cells of the battery pack.
  • a closed cavity 800 is enclosed between the adjacent battery cells and the corresponding connection sleeve 600 , and the adjacent battery cells are on the closed cavity 800 .
  • the heat exchange tubes 500 are all communicated with the closed chamber 800 .
  • the adjacent heat exchange tubes 500 are connected by a third connecting head 900 , and the interior of the third connecting head 900 is provided with the adjacent heat exchange tubes 500 .
  • the inner hole channel communicated inside the heat exchange tube 500 . All the heat exchange tubes 500 are connected to form a closed pipeline, and there is no need to use the closed chamber 800 in the above embodiment to achieve communication.
  • the side wall of the connection kit 600 is provided with a through hole 630 that communicates the closed chamber 800 with the outside, and the through hole 630 is detachably installed with a
  • the through hole 630 is sealed with a sealing plug.
  • the sealing plug is removed from the through hole 630 , and the heat conducted to the first end cap 200 and the second end cap 300 can go out from the through hole 630 in the form of hot air
  • the exhaust, or external airflow may enter the closed chamber 800 from the through hole 630 to exchange heat with the first end cap 200 and the second end cap 300 .
  • the side wall of the connection sleeve 600 is provided with a plurality of the through holes 630 distributed around the axis of the heat exchange tube 500, which is beneficial to improve the heat exchange efficiency.

Abstract

本发明公开了一种电池单体及电池组，电池单体包括筒体，筒体的两端分别设有第一端盖和第二端盖，筒体、第一端盖和第二端盖限定出容置空间，容置空间内设有电芯组件；换热管，穿设于第一端盖和第二端盖上且贯穿容置空间,换热管的外壁与电芯组件相接触。换热管连通外部低温流体而与电芯组件进行换热能够带走电芯组件产生的部分热量，避免电池单体的内部温度升高而使电池充放电效率和可靠性下降的情况，换热管连通外部温暖流体而与电芯组件进行换热，能够在极寒条件下帮助电芯组件快速升温，进而提高电能利用效率。电池组包括至少两个电池单体，相邻电池单体的换热管相连通，从电池组的一端的换热管输入外部流体后可对所有电池单体进行换热。

Description

一种电池单体及电池组 技术领域
本发明涉及一种电池单体及电池组。
背景技术
目前，一般的电池只能利用包裹在电芯组件外部的壳体进行换热，其换热效果较差，当电池内部温度过高时，电池内积聚热量后会导致电池充放电效率和可靠性下降，而当处于极寒的环境下，电池内部温度过低，两种情况均会影响电能的利用效率和可靠性。
发明内容
本发明旨在至少解决现有技术中存在的技术问题之一。为此，本发明提出一种换热良好的电池单体。
本发明还提出一种电池组，该电池组的每个电池单体均能够达到良好的换热效果，提高电池组的能源利用率。
根据本发明实施例的第一方面实施例的一种电池单体，包括：筒体，所述筒体的两端分别设有第一端盖和第二端盖，所述筒体、所述第一端盖和所述第二端盖限定出容置空间，所述容置空间内设有电芯组件；换热管，穿设于所述第一端盖和所述第二端盖上,所述换热管贯穿所述容置空间,所述换热管的外壁与所述电芯组件相接触。
根据本发明实施例的一种电池单体，至少具有如下有益效果：
以上电池单体设有贯穿其内部的换热管，换热管的管壁与电芯组件相接触，换热管连通外部低温流体而与电芯组件进行换热能够带走电芯组件产生的部分热量，避免电池单体的内部 温度升高而使电池充放电效率和可靠性下降的情况，换热管连通外部温暖流体而与电芯组件进行换热，能够在极寒条件下帮助电芯组件快速升温，进而提高电池单体的电能利用效率。
在本发明的一些实施例中，所述换热管包括中心管、第一接头和第二接头，所述第一端盖和所述第二端盖上分别开设有与所述中心管相适配的第一安装孔和第二安装孔，所述第一接头可拆卸连接在所述中心管的一端并压紧于所述第一端盖上，所述第二接头可拆卸连接在所述中心管的另一端并压紧于所述第二端盖上，所述第一接头和所述第二接头的内部分别设有与所述中心管的内部相连通的第一贯穿孔和第二贯穿孔。
在本发明的一些实施例中，所述中心管的两端分别与所述第一接头和所述第二接头螺纹连接。
在本发明的一些实施例中，电池单体还包括第一密封件和第二密封件，所述第一密封件密封设置于所述第一接头与所述第一端盖之间，所述第二密封件密封设置于所述第二接头与所述第二端盖之间。
在本发明的一些实施例中，所述第一端盖上设有用于连接另一所述电池单体的所述第二端盖的连接套件。
在本发明的一些实施例中，所述第一端盖上设有第一内螺纹，所述第二端盖上设有第二内螺纹，所述连接套件上设有与所述第一内螺纹相连接的第一外螺纹，所述连接套件上设有与所述第二内螺纹相匹配的第二外螺纹。
本发明还提出一种电池组，包括至少两个上述任一技术方案的电池单体，所述电池单体之间通过连接套件依次串联，相邻的所述电池单体上的所述换热管之间相互连通。
根据本发明实施例的电池组，至少具有如下有益效果：
以上电池组包括至少两个电池单体，电池单体之间通过连接套件依次串联，且相邻的所述电池单体上的所述换热管之间相互连通，从电池组的一端的换热管输入外部流体后，流体可从电池组的另一端的换热管输出，从而对电池组的所有电池单体进行换热。
在本发明的一些实施例中，相邻的所述电池单体与对应的所述连接套件之间围成闭合腔室，所述换热管均与所述闭合腔室相连通。
在本发明的一些实施例中，所述连接套件的侧壁设有将所述闭合腔室与外部相连通的通孔，所述通孔可拆卸安装有将所述通孔密封的密封塞。
在本发明的一些实施例中，相邻的所述换热管之间通过第三连接头相连接，所述第三连接头的内部设有与相邻的所述换热管内部相连通的内孔通道。
本发明的附加方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本发明的实践了解到。
附图说明
本发明的上述和/或附加的方面和优点从结合下面附图对实施例的描述中将变得明显和容易理解，其中：
图1为本发明的电池单体的一种实施例的内部结构示意图；
图2为本发明的电池组的一种实施例的内部结构示意图；
图3为本发明的电池组的另一种实施例的内部结构示意图。
具体实施方式
下面详细描述本发明的实施例，所述实施例的示例在附图 中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的，仅用于解释本发明，而不能理解为对本发明的限制。
在本发明的描述中，需要理解的是，涉及到方位描述，例如术语“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
在本发明的描述中，若干的含义是一个或者多个，多个的含义是两个以上，大于、小于、超过等理解为不包括本数，以上、以下、以内等理解为包括本数。如果有描述到第一、第二只是用于区分技术特征为目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量或者隐含指明所指示的技术特征的先后关系。
本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
参见图1，根据本发明实施例的第一方面实施例的一种电池单体，包括：筒体100，所述筒体100的两端分别设有第一 端盖200和第二端盖300，所述筒体100、所述第一端盖200和所述第二端盖300限定出容置空间，所述容置空间内设有电芯组件400；换热管500，穿设于所述第一端盖200和所述第二端盖300上,所述换热管500贯穿所述容置空间,所述换热管500的外壁与所述电芯组件400相接触。以上电池单体设有贯穿其内部的换热管500，换热管500的管壁与电芯组件400相接触，换热管500连通外部低温流体而与电芯组件400进行换热能够带走电芯组件400产生的部分热量，避免电池单体的内部温度升高而使电池充放电效率和可靠性下降的情况，换热管500连通外部温暖流体而与电芯组件400进行换热，能够在极寒条件下帮助电芯组件400快速升温，进而提高电能利用效率。
参见图1，在本发明的一些实施例中，所述换热管500包括中心管510、第一接头520和第二接头530，所述第一接头520和所述第二接头530的内部分别设有与所述中心管510的内部相连通的第一贯穿孔521和第二贯穿孔531，第一贯穿孔521和第二贯穿孔531分别正对中心管510的两个端口，所述第一端盖200和所述第二端盖300上分别开设有与所述中心管510相适配的第一安装孔和第二安装孔，第一安装孔、第二安装孔分别供中心管510的两端穿过，所述第一接头520可拆卸连接在所述中心管510的一端并压紧于所述第一端盖200上，所述第二接头530可拆卸连接在所述中心管510的另一端并压紧于所述第二端盖300上，第一接头520和第二接头530既可以将中心管510固定在电池单体的内部，又能够对第一端盖200与筒体100之间的连接、以及第二端盖300与筒体100之间的连接起到加固的作用。
参见图1，在本发明的一些实施例中，为了简化安装方式， 所述中心管510的两端分别与所述第一接头520和所述第二接头530螺纹连接。
参见图1，在本发明的一些实施例中，对于筒体100内具有电解液的电池单体，为了避免电解液外泄，电池单体还包括第一密封件540和第二密封件550，所述第一密封件540密封设置于所述第一接头520与所述第一端盖200之间，所述第二密封件550密封设置于所述第二接头530与所述第二端盖300之间。
参见图1和图2，在本发明的一些实施例中，所述第一端盖200上设有用于连接另一所述电池单体的所述第二端盖300的连接套件600，进而实现多个电池单体相连。
在本发明的一些实施例中，所述第一端盖200上设有第一内螺纹220，所述第二端盖300上设有第二内螺纹320，所述连接套件600上设有与所述第一内螺纹220相连接的第一外螺纹610，所述连接套件600上设有与所述第二内螺纹320相匹配的第二外螺纹620。即相邻两个电池单体之间通过螺纹结构相连接，可自由调节串联的电池单体的个数，并且，当只使用一个电池单体时，连接套件600还可以从电池单体上拆除，不影响使用。
在本发明的一些实施例中，所述电芯组件400包括位于所述容置空间之内的卷芯组件和电解液，所述第一端盖200和/或所述第二端盖300上设有注液口，所述注液口上可拆卸安装有安全阀700。
参见图2或者图3，本发明还提出一种电池组，包括至少两个上述任一技术方案的电池单体，所述电池单体之间通过连接套件600依次串联，相邻的电池单体上的换热管500相连通。 以上电池组从一端的换热管500输入外部流体后，流体可从电池组的另一端的换热管500输出，从而对电池组的所有电池单体进行换热。
参见图1和图2，在本发明的一些实施例中，相邻的所述电池单体与对应的所述连接套件600之间围成闭合腔室800，相邻的所述电池单体上的所述换热管500均与所述闭合腔室800相连通。
参见图3，在本发明的一些实施例中，相邻的所述换热管500之间通过第三连接头900相连接，所述第三连接头900的内部设有与相邻的所述换热管500内部相连通的内孔通道。所有换热管500相连形成一条闭合管路，无需利用上述实施例中的闭合腔室800实现连通。
参见图1和图2，在本发明的一些实施例中，所述连接套件600的侧壁设有将闭合腔室800与外部相连通的通孔630，所述通孔630可拆卸安装有将所述通孔630密封的密封塞。当换热管500的内部不通入外部流体时，密封塞从通孔630上拆除，传导至第一端盖200和第二端盖300处的热量能够以热气流的形式从通孔630向外排出，或者外部的气流可以从通孔630进入闭合腔室800内而与第一端盖200和第二端盖300进行换热。
在本发明的一些实施例中，所述连接套件600的侧壁上开设有多个绕所述换热管500的轴心圆周分布的所述通孔630，有利于提高换热效率。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都 应当认为是本说明书记载的范围。
尽管已经示出和描述了本发明的实施例，本领域的普通技术人员可以理解：在不脱离本发明的原理和宗旨的情况下可以对这些实施例进行多种变化、修改、替换和变型，本发明的范围由权利要求及其等同物限定。

Claims (10)

  1. 一种电池单体，其特征在于，包括：
    筒体(100)，所述筒体(100)的两端分别设有第一端盖(200)和第二端盖(300)，所述筒体(100)、所述第一端盖(200)和所述第二端盖(300)限定出容置空间，所述容置空间内设有电芯组件(400)；
    换热管(500)，穿设于所述第一端盖(200)和所述第二端盖(300)上,所述换热管(500)贯穿所述容置空间,所述换热管(500)的外壁与所述电芯组件(400)相接触。
  2. 根据权利要求1所述的一种电池单体，其特征在于：
    所述换热管(500)包括中心管(510)、第一接头(520)和第二接头(530)，所述第一端盖(200)和所述第二端盖(300)上分别开设有与所述中心管(510)相适配的第一安装孔和第二安装孔，所述第一接头(520)可拆卸连接在所述中心管(510)的一端并压紧于所述第一端盖(200)上，所述第二接头(530)可拆卸连接在所述中心管(510)的另一端并压紧于所述第二端盖(300)上，所述第一接头(520)和所述第二接头(530)的内部分别设有与所述中心管(510)的内部相连通的第一贯穿孔(521)和第二贯穿孔(531)。
  3. 根据权利要求2所述的一种电池单体，其特征在于：
    所述中心管(510)的两端分别与所述第一接头(520)和所述第二接头(530)螺纹连接。
  4. 根据权利要求2所述的一种电池单体，其特征在于：
    还包括第一密封件(540)和第二密封件(550)，所述第一密封件(540)密封设置于所述第一接头(520)与所述第一端盖(200)之间，所述第二密封件(550)密封设置于所述第二接头(530)与所述第二端盖(300)之间。
  5. 根据权利要求1所述的一种电池单体，其特征在于：
    所述第一端盖(200)上设有用于连接另一所述电池单体的所述第二端盖(300)的连接套件(600)。
  6. 根据权利要求5所述的一种电池单体，其特征在于：
    所述第一端盖(200)上设有第一内螺纹(220)，所述第二端盖(300)上设有第二内螺纹(320)，所述连接套件(600)上设有与所述第一内螺纹(220)相连接的第一外螺纹(610)，所述连接套件(600)上设有与所述第二内螺纹(320)相匹配的第二外螺纹(620)。
  7. 一种电池组，其特征在于，包括至少两个如权利要求1-7任一项所述的电池单体，所述电池单体之间通过连接套件(600)依次串联，相邻的所述电池单体上的所述换热管(500)之间相互连通。
  8. 根据权利要求7所述的一种电池组，其特征在于：
    相邻的所述电池单体与对应的所述连接套件(600)之间围成闭合腔室(800)，所述换热管(500)均与所述闭合腔室(800)相连通。
  9. 根据权利要求8所述的一种电池组，其特征在于：
    所述连接套件(600)的侧壁设有将所述闭合腔室(800)与外部相连通的通孔(630)，所述通孔(630)可拆卸安装有将所述通孔(630)密封的密封塞。
  10. 根据权利要求7所述的一种电池组，其特征在于：
    相邻的所述换热管(500)之间通过第三连接头(900)相连接，所述第三连接头(900)的内部设有与相邻的所述换热管(500)内部相连通的内孔通道。
PCT/CN2020/133148 2020-09-28 2020-12-01 一种电池单体及电池组 WO2022062173A1 (zh)

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