WO2024125285A1 - 一种电池、电池包及用电设备 - Google Patents

一种电池、电池包及用电设备 Download PDF

Info

Publication number
WO2024125285A1
WO2024125285A1 PCT/CN2023/134358 CN2023134358W WO2024125285A1 WO 2024125285 A1 WO2024125285 A1 WO 2024125285A1 CN 2023134358 W CN2023134358 W CN 2023134358W WO 2024125285 A1 WO2024125285 A1 WO 2024125285A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
shell
pressure relief
end cover
battery cell
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/CN2023/134358
Other languages
English (en)
French (fr)
Inventor
徐卫东
刘俊军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xiamen Hithium Energy Storage Technology Co Ltd
Original Assignee
Xiamen Hithium Energy Storage 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 Xiamen Hithium Energy Storage Technology Co Ltd filed Critical Xiamen Hithium Energy Storage Technology Co Ltd
Publication of WO2024125285A1 publication Critical patent/WO2024125285A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

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
    • H01M50/30—Arrangements for facilitating escape of gases
    • 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
    • H01M50/147—Lids or covers
    • H01M50/148—Lids or covers characterised by their shape
    • H01M50/15—Lids or covers characterised by their shape for prismatic or rectangular cells
    • 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 application relates to the technical field of battery assembly, and in particular to a battery, a battery pack and an electrical device.
  • Battery cells are set up in the battery for energy storage.
  • the capacity of the battery cell is related to the size of various protective structures, connection structures and limiting structures on the corresponding end cover assembly.
  • the current battery cell capacity is commonly 280Ah conventional battery cells. This specification of battery cells requires a large number of connectors for system assembly in the subsequent grouping process, which is costly and complicated to assemble.
  • the embodiments of the present application disclose a battery, a battery pack and an electrical device, which can solve the problem in the related art that a large number of connectors are required for assembly during the conventional battery cell grouping process, which results in high cost and complicated assembly.
  • the present application discloses a battery, comprising: a shell, provided with a containing cavity and an opening connected to the containing cavity; a battery cell, provided in the containing cavity; an end cover assembly, comprising an end cover body and an explosion-proof valve, the end cover body sealing the opening, the end cover body provided with a pressure relief hole connected to the containing cavity, and the explosion-proof valve sealed in the pressure relief hole; the battery cell satisfies the relationship: 1.0mm 2 /AH ⁇ S1/C1 ⁇ 2.5mm 2 /AH; 800AH ⁇ C1 ⁇ 3000AH; wherein S1 is the area of the cross section of the explosion-proof valve toward the pressure relief direction; and C1 is the capacity of the battery cell.
  • the battery cell by increasing the capacity of the battery cell to C1 ⁇ 800AH, the number of battery cells in the battery of the same volume is reduced. Accordingly, the number of connectors such as protective structures, connection structures, and limit structures adapted to the battery cells will be reduced. In this way, the number of materials, the complexity of the battery structure, and the material cost of the battery are reduced. At the same time, the battery cell cannot be infinitely enlarged, so the upper limit of the capacity of the battery cell is controlled, that is, C1 ⁇ 3000AH, to improve the operability of the device of the present application.
  • the pressure relief area of the explosion-proof valve is adapted to the cell capacity.
  • S1/ C1 ⁇ 1.0mm2 /AH the pressure relief area S1 of the explosion-proof valve is not too small relative to the cell capacity C1, so that the gas and liquid can be fully discharged when the cell expands, thereby ensuring pressure relief flow; and by controlling S1/ C1 ⁇ 2.5mm2 /AH, it can be ensured that the pressure relief area S1 of the explosion-proof valve is not too large relative to the cell capacity C1, thereby avoiding affecting the overall strength of the end cover assembly to ensure the structural stability of the battery.
  • the device of the present application can reduce the material quantity, structural complexity and material cost of the battery while taking into account the pressure relief flow and structural stability of the battery.
  • the present application discloses a battery pack, comprising a battery.
  • the present application discloses an electrical device including a battery pack.
  • the battery includes: a shell, provided with a receiving cavity and an opening connected to the receiving cavity; a battery cell, provided in the receiving cavity; an end cover assembly, including an end cover body and an explosion-proof valve, the end cover body covers the opening, the end cover body is provided with a pressure relief hole connected to the receiving cavity, and the explosion-proof valve is sealed in the pressure relief hole; the battery cell satisfies the relationship: 1.0mm 2 /AH ⁇ S1/C1 ⁇ 2.5mm 2 /AH; 800AH ⁇ C1 ⁇ 3000AH; wherein S1 is the area of the cross section of the explosion-proof valve toward the pressure relief direction; and C1 is the capacity of the battery cell.
  • the battery cell by increasing the capacity of the battery cell to C1 ⁇ 800AH, the number of battery cells in the battery of the same volume is reduced, and accordingly, the number of connectors such as protective structures, connection structures, and limit structures adapted to the battery cells will be reduced, so that the number of battery materials, battery structure complexity, and material costs can be reduced.
  • the battery cell cannot be infinitely large, so the upper limit of the battery cell capacity is controlled, that is, C1 ⁇ 3000AH, to improve the operability of the device of this application.
  • the pressure relief area of the explosion-proof valve is adapted to the cell capacity.
  • S1/ C1 ⁇ 1.0mm2 /AH the pressure relief area S1 of the explosion-proof valve is not too small relative to the cell capacity C1, so that the gas and liquid can be fully discharged when the cell expands, thereby ensuring pressure relief flow; and by controlling S1/ C1 ⁇ 2.5mm2 /AH, it can be ensured that the pressure relief area S1 of the explosion-proof valve is not too large relative to the cell capacity C1, thereby avoiding affecting the overall strength of the end cover assembly to ensure the structural stability of the battery.
  • the device of the present application reduces the number of materials in the battery, the complexity of the battery structure and the material cost. At the same time, it can take into account the pressure relief flow and structural stability of the battery.
  • FIG1 is an overall structural diagram of a battery disclosed in the present application.
  • FIG2 is a front view of a battery disclosed in the present application.
  • FIG3 is an enlarged view of point I of FIG2 disclosed in the present application.
  • FIG4 is an enlarged view of point II of FIG2 disclosed in the present application.
  • FIG. 5 is a left side view of a battery disclosed in the present application.
  • installed should be understood in a broad sense.
  • it can be a fixed connection, a detachable connection, or an integral structure; 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 it can be an internal connection between two devices, elements, or components.
  • installed can be a fixed connection, a detachable connection, or an integral structure; 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 it can be an internal connection between two devices, elements, or components.
  • first means two or more.
  • the capacity of the battery cell is related to the size of various protective structures, connection structures and limiting structures on the corresponding end cover assembly.
  • the current battery cell capacity is commonly 280Ah conventional battery cells.
  • Battery cells of this specification require a large number of connectors for system assembly in the subsequent grouping process, which is costly and complex to assemble.
  • the technical solution of the present application is to solve such technical problems, which is explained below in conjunction with Figures 1 to 5.
  • the present application discloses a battery, which may include a housing 100, a battery cell 200, and an end cap assembly 300.
  • the housing 100 is the installation base of the present application and provides shielding protection for other components, while the battery cell 200 is the core energy storage component of the battery to achieve the transmission of electric energy.
  • the housing 100 may be provided with a receiving cavity and an opening connected to the receiving cavity, and the battery cell 200 is arranged in the receiving cavity.
  • the end cap assembly 300 may include an end cap body 310 and an explosion-proof valve 320.
  • the end cap body 310 seals the opening to prevent external stains from contaminating the interior of the battery.
  • the end cap body 310 is provided with a pressure relief hole connected to the accommodating cavity, and the explosion-proof valve 320 is sealed in the pressure relief hole.
  • the pressure relief hole is used to achieve pressure relief of the battery. Specifically, when the battery is working normally, the internal pressure of the battery is normal, and the explosion-proof valve 320 also seals the pressure relief hole normally. When the battery expands and the pressure rises, the excessive pressure will break through the explosion-proof valve 320, and the expanded gas and liquid can be discharged through the pressure relief hole to achieve pressure relief and ensure the safety performance of the battery.
  • S1 is the cross-sectional area of the explosion-proof valve 320 in the pressure relief direction Z, that is, the pressure relief area of the explosion-proof valve 320
  • C1 is the capacity of the battery cell 200.
  • the battery cell 200 by increasing the capacity of the battery cell 200 to C1 ⁇ 800AH, the number of battery cells 200 in the battery of the same volume is reduced, and accordingly, the number of connectors such as protective structures, connection structures, and limit structures adapted to the battery cell 200 will be reduced, so that the number of materials, the complexity of the battery structure, and the material cost of the battery can be reduced.
  • the battery cell 200 cannot be infinitely large, so the upper limit of the capacity of the battery cell 200 is controlled, that is, C1 ⁇ 3000AH, to improve the operability of the device of the present application.
  • the pressure relief area of the explosion-proof valve 320 is adapted to the capacity of the battery cell 200.
  • the pressure relief area S1 of the explosion-proof valve 320 is not too small relative to the capacity C1 of the battery cell 200, so that the gas and liquid can be fully discharged when the battery cell 200 expands, thereby ensuring pressure relief flow; and by controlling S1/C1 ⁇ 2.5 mm 2 /AH can ensure that the pressure relief area S1 of the explosion-proof valve 320 is not too large relative to the capacity C1 of the battery cell 200, thereby avoiding affecting the overall strength of the end cap assembly 300 to ensure the structural stability of the battery.
  • the device of the present application can reduce the material quantity, structural complexity and material cost of the battery while taking into account the pressure relief flow and structural stability of the battery.
  • H1 is the height of the battery cell 200; the height direction of the battery cell 200 is toward the pressure relief direction Z.
  • the specifications of the battery cell 200 are more suitable for square batteries and meet the installation requirements of square batteries.
  • M2 is the thickness of the housing 100
  • W2 is the length of the housing 100
  • H2 is the height of the housing 100
  • the thickness direction of the housing 100 is toward the second direction Y
  • the height direction of the housing 100 is toward the pressure relief direction Z
  • the length direction of the housing 100 is toward the first direction X
  • the first direction X, the second direction Y and the pressure relief direction Z intersect each other.
  • the end cap assembly 300 may further include a pole 330 , which is electrically connected to the battery cell 200 to form a conductive loop, so that the battery can conduct electrical energy.
  • the pole 330 is disposed on the end cap body 310 , and there are two poles 330 , and the explosion-proof valve 320 is located between the two poles 330 .
  • L4 is the center distance between the two poles 330; W3 is the length of the end cover body 310; the length direction of the end cover body 310 is toward the first direction X.
  • the center distance L4 between the two poles 330 needs to be wide enough, so that on the one hand, the stability of the conductive circuit formed between the pole 330 and the external electrical connection device can be ensured, and on the other hand, sufficient processing and installation space can be left for the explosion-proof valve 320 and the injection hole on the end cover body 310, thereby improving the molding yield.
  • the center distance L4 between the two poles 330 cannot be too large, so as to avoid being too close to the edge of the end cover body 310, affecting the strength of the edge position of the end cover body 310, and occupying other parts, such as the setting of the adapter 360, the pin 361 and the like in the following text.
  • the relative position relationship between the center distance L4 of the pole 330 and the length W3 of the end cover body 310 is controlled according to the above-mentioned 0.75 ⁇ L4/W3 ⁇ 0.90, or 40mm ⁇ W3-L4 ⁇ 100mm, so that the setting of the pole 330 can ensure sufficient strength of the end cover body 310 while avoiding installation interference with other components, thereby ensuring the stability of the end cover assembly 300 without deformation.
  • the end cover assembly 300 can achieve effective sealing of the shell 100 while avoiding the waste of excess materials.
  • the pole 330 may satisfy: D4 min ⁇ 18 mm, wherein D4 min is the minimum diameter of the pole 330. In this way, the flow area of the pole 330 can be ensured, thereby ensuring the conductivity of the battery.
  • the design of the pressing block 340 can not only reinforce the end cover assembly 300 to ensure the structural stability of the end cover assembly 300, but also be able to adapt to the center distance L4 size of the pole 330, thereby fully surrounding and protecting the pole 330.
  • the busbar connecting the pressing block 340 and the external module has enough welding area to meet the overcurrent requirement of the battery, thereby ensuring the conductivity.
  • the end cap assembly 300 may further include an adapter 360, which is disposed on the end cap body 310, the adapter 360 is connected to the pole 330, and the adapter 360 is provided with a pin 361 for connecting to the battery cell 200, and the pin 361 may meet the following requirements: M7 ⁇ 50 mm; H7 ⁇ 80 mm.
  • the two poles 330 are respectively the positive pole and the negative pole of the battery.
  • the battery cell 200 also has corresponding positive and negative poles.
  • Two adapters 360 are also provided accordingly, one of which is respectively connected to the positive pole and the positive pole of the battery cell 200, and the other is respectively connected to the negative pole and the negative pole of the battery cell 200.
  • the material of the adapter 360 for connecting the positive electrode of the battery cell 200 is aluminum, and the material of the adapter 360 for connecting the negative electrode of the battery cell 200 is copper. Considering that the current carrying capacity of copper and aluminum is different, the pin 361 can also meet the following requirements:
  • the first direction X, the second direction Y, and the pressure relief direction Z intersect in pairs, for example, are perpendicular to each other.
  • Such a configuration can fully guarantee the current-carrying capacity of the pin 361 itself, thereby enabling the adapter 360 to play a good conductive role between the positive electrode column and the positive electrode of the battery cell 200 , and between the negative electrode column and the negative electrode of the battery cell 200 .
  • H3 is the thickness of the end cover body 310; and the thickness direction of the end cover body 310 is toward the pressure relief direction Z.
  • the end cover body 310 can take into account both strength performance and material cost savings.
  • the housing 100 may satisfy: T2 ⁇ 0.6 mm; T2 is the wall thickness of the housing 100. In this way, the housing 100 has sufficient strength to effectively prevent deformation due to collision.
  • the housing 100 may satisfy:
  • T21 0.5mm, 0.8mm, 1mm, etc.
  • T22 0.6mm, 0.8mm, 1mm, 1.2mm, etc.
  • T23 1.2mm, 1.5mm, 1.8mm, 2.5mm, etc.
  • the bottom surface of the shell 100 and the battery cell 200 are arranged in sequence along the pressure relief direction Z.
  • the large surface of the shell 100 and the side surface of the shell 100 form the peripheral wall of the shell 100.
  • the peripheral wall of the shell 100 surrounds
  • the housing 100 is connected to the bottom surface of the housing 100 to form a receiving cavity. This can further improve the structural strength of the housing 100 and prevent it from being damaged or deformed by collision.
  • the housing 100 may satisfy: V2 ⁇ 8000000 mm 3 ; V2 is the volume of the housing 100 . In this way, a sufficient number of battery cells 200 may be accommodated in the housing 100 , thereby making the battery have sufficient capacity.
  • the end cap assembly 300 may be provided with a liquid injection hole 350 communicating with the accommodating cavity, and the liquid injection hole 350 is spaced apart from the pressure relief hole; the liquid injection hole 350 may satisfy: D6 ⁇ 5 mm; wherein D6 is the diameter of the liquid injection hole 350.
  • the liquid injection hole 350 is used to inject electrolyte into the battery, and through the above-mentioned size control, the liquid injection hole 350 has a sufficient flow area, thereby satisfying the liquid injection capacity and improving the liquid injection efficiency.
  • the present application also discloses a battery pack which can be the above-mentioned battery.
  • the present application also discloses an electric device, which may include the above-mentioned battery pack, such as an electric vehicle, a ship, a spacecraft, a computer, etc.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Gas Exhaust Devices For Batteries (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

本申请公开一种电池，包括：壳体，设有容纳腔和连通容纳腔的开口；电芯，设于容纳腔；端盖组件，包括端盖本体和防爆阀，端盖本体封盖开口，端盖本体设有连通容纳腔的泄压孔，防爆阀密封于泄压孔；电芯满足关系式：1.0mm2/AH≤S1/C1≤2.5mm2/AH；800AH≤C1≤3000AH；其中，S1为防爆阀朝向泄压方向的横截面的面积；C1为电芯的容量，这样本申请装置在降低电池的物料数量、电池结构复杂度和物料成本的同时，能够兼顾电池的泄压流通性和结构稳定性。本申请还公开一种电池包及用电设备。

Description

一种电池、电池包及用电设备
相关交叉引用
本申请要求于2022年12月12日提交中国专利局、申请号为2022115970787、公开名称为“一种电池、电池包及用电设备”的中国专利申请的优先权，其全部内容通过引用结合在本公开中。
技术领域
本申请涉及电池装配技术领域，尤其涉及一种电池、电池包及用电设备。
背景技术
电池内会设置电芯进行能量存储，同时相关技术中，电芯的容量大小关联着对应端盖组件上各类防护结构、连接结构以及限位结构的尺寸大小，目前的电芯容量常见有280Ah的常规电芯，此规格的电芯在后续成组过程中需要大量的连接件进行系统装配，成本高且装配复杂。
基于上述问题存在，遂有如下技术方案产生。
发明内容
本申请实施例公开了一种电池、电池包及用电设备，能够解决相关技术中常规电芯成组过程中需要大量连接件进行装配，成本高且装配复杂的问题。
为了实现上述目的，第一方面，本申请公开一种电池，包括：壳体，设有容纳腔和连通容纳腔的开口；电芯，设于容纳腔；端盖组件，包括端盖本体和防爆阀，端盖本体封盖开口，端盖本体设有连通容纳腔的泄压孔，防爆阀密封于泄压孔；电芯满足关系式：1.0mm2/AH≤S1/C1≤2.5mm2/AH；800AH≤C1≤3000AH；其中，S1为防爆阀朝向泄压方向的横截面的面积；C1为电芯的容量。
本申请中，通过将电芯的容量提高至C1≥800AH，使得同体积的电池中电芯的数目减少，相应的，与电芯适配的防护结构、连接结构以及限位结构等连接件的数目将减少，如此，电池的物料数量、电池结构复杂度和物料成 本均能够减小。同时，电芯也不能无限做大，故控制电芯的容量上限，即C1≤3000AH，以提高本申请装置的可操作性。
同时，在电芯容量C1提高的同时，也需要保证防爆阀的泄压面积与电芯容量适配。具体来说，通过控制S1/C1≥1.0mm2/AH，使得防爆阀的泄压面积S1相对于电芯容量C1不至于太小，这样电芯膨胀时气液的能够充分排出，从而保证泄压流通性；而通过控制S1/C1≤2.5mm2/AH，可以保证防爆阀的泄压面积S1相对于电芯容量C1不至于太大，进而避免影响端盖组件的整体强度，以保证电池的结构稳定性。
综上，本申请装置在降低电池的物料数量、电池结构复杂度和物料成本的同时，能够兼顾电池的泄压流通性和结构稳定性。
第二方面，本申请公开一种电池包，包括电池。
第三方面，本申请公开一种用电设备，包括电池包。
与现有技术相比，本申请的有益效果在于：
本申请通过对电池进行优化设计，具体为设置电池包括：壳体，设有容纳腔和连通容纳腔的开口；电芯，设于容纳腔；端盖组件，包括端盖本体和防爆阀，端盖本体封盖开口，端盖本体设有连通容纳腔的泄压孔，防爆阀密封于泄压孔；电芯满足关系式：1.0mm2/AH≤S1/C1≤2.5mm2/AH；800AH≤C1≤3000AH；其中，S1为防爆阀朝向泄压方向的横截面的面积；C1为电芯的容量。
本申请中，通过将电芯的容量提高至C1≥800AH，使得同体积的电池中电芯的数目减少，相应的，与电芯适配的防护结构、连接结构以及限位结构等连接件的数目将减少，如此，电池的物料数量、电池结构复杂度和物料成本均能够减小。同时，电芯也不能无限做大，故控制电芯的容量上限，即C1≤3000AH，以提高本申请装置的可操作性。
同时，在电芯容量C1提高的同时，也需要保证防爆阀的泄压面积与电芯容量适配。具体来说，通过控制S1/C1≥1.0mm2/AH，使得防爆阀的泄压面积S1相对于电芯容量C1不至于太小，这样电芯膨胀时气液的能够充分排出，从而保证泄压流通性；而通过控制S1/C1≤2.5mm2/AH，可以保证防爆阀的泄压面积S1相对于电芯容量C1不至于太大，进而避免影响端盖组件的整体强度，以保证电池的结构稳定性。
综上，本申请装置在降低电池的物料数量、电池结构复杂度和物料成本 的同时，能够兼顾电池的泄压流通性和结构稳定性。。
附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1为本申请公开的一种电池的整体结构图；
图2为本申请公开的一种电池的主视图；
图3为本申请公开的一种图2的I处放大图；
图4为本申请公开的一种图2的II处放大图；
图5为本申请公开的一种电池的左视图。
附图标记说明：
100-壳体、
200-电芯、
300-端盖组件、
310-端盖本体、320-防爆阀、330-极柱、340-压块、350-注液孔、360-
转接件、
Z-泄压方向、X-第一方向、Y-第二方向。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
术语“安装”、“设置”、“设有”、“连接”、“相连”应做广义理解。例如，可以是固定连接，可拆卸连接，或整体式构造；可以是机械连接，或电连接；可以是直接相连，或者是通过中间媒介间接相连，又或者是两个装置、元件或组成部分之间内部的连通。对于本领域普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
此外，术语“第一”、“第二”等主要是用于区分不同的装置、元件或组成部分(具体的种类和构造可能相同也可能不同)，并非用于表明或暗示所指示 装置、元件或组成部分的相对重要性和数量。除非另有说明，“多个”的含义为两个或两个以上。
相关技术中，电芯的容量大小关联着对应端盖组件上各类防护结构、连接结构以及限位结构的尺寸大小，目前的电芯容量常见有280Ah的常规电芯，此规格的电芯在后续成组过程中需要大量的连接件进行系统装配，成本高且装配复杂，而本申请的技术方案，正是为了解决此类技术问题，下面结合图1～图5进行阐述。
本申请公开一种电池，电池可以包括壳体100、电芯200和端盖组件300。其中，壳体100为本申请的安装基础，并为其他零部件提供遮罩保护，而电芯200则为电池的储能核心部件，以实现电能的传输，具体来说，壳体100可以设有容纳腔和连通容纳腔的开口，电芯200设于容纳腔。
端盖组件300可以包括端盖本体310和防爆阀320，端盖本体310封盖开口，以防止外界污渍污染电池内部。端盖本体310设有连通容纳腔的泄压孔，防爆阀320密封于泄压孔。其中，泄压孔用于实现电池的泄压，具体来说，电池正常工作时，电池内部压力正常，防爆阀320亦正常密封泄压孔，当电池内部出现膨胀导致压力升高时，过大的压力将冲破防爆阀320，膨胀的气液可通过泄压孔排出，以实现泄压，保证电池的安全性能。
电芯200可以满足关系式：1.0mm2/AH≤S1/C1≤2.5mm2/AH；比如S1/C1＝1.0mm2/AH、1.5mm2/AH、2mm2/AH、2.5mm2/AH等。而800AH≤C1≤3000AH，比如C1＝800AH、1000AH、1500AH、2000AH、2500AH、3000AH等。其中，S1为防爆阀320朝向泄压方向Z的横截面的面积，即防爆阀320的泄压面积；C1为电芯200的容量。
本申请中，通过将电芯200的容量提高至C1≥800AH，使得同体积的电池中电芯200的数目减少，相应的，与电芯200适配的防护结构、连接结构以及限位结构等连接件的数目将减少，如此，电池的物料数量、电池结构复杂度和物料成本均能够减小。同时，电芯200也不能无限做大，故控制电芯200的容量上限，即C1≤3000AH，以提高本申请装置的可操作性。
同时，在电芯200容量C1提高的同时，也需要保证防爆阀320的泄压面积与电芯200容量适配。具体来说，通过控制S1/C1≥1.0mm2/AH，使得防爆阀320的泄压面积S1相对于电芯200容量C1不至于太小，这样电芯200膨胀时气液能够充分排出，从而保证泄压流通性；而通过控制S1/C1≤ 2.5mm2/AH，可以保证防爆阀320的泄压面积S1相对于电芯200容量C1不至于太大，进而避免影响端盖组件300的整体强度，以保证电池的结构稳定性。
综上，本申请装置在降低电池的物料数量、电池结构复杂度和物料成本的同时，能够兼顾电池的泄压流通性和结构稳定性。
可选地，电芯200可以满足：180mm≤H1≤360mm；比如H1＝180mm、240mm、300mm、360mm等。其中，H1为电芯200的高度；电芯200的高度方向朝泄压方向Z。如此，使得电芯200的规格更加适配于方形电池，且满足方形电池的安装需要。
可选地，防爆阀320可以满足：S1≥1200mm2，比如S1＝1200mm2、1500mm2、1800mm2等，如此，使得电芯200膨胀时，防爆阀320能够提供足够的泄压面积S1，来保证膨胀气液的流畅排出。
可选地，壳体100可以满足：1/20≤M2/W2≤1/3；比如M2/W2＝1/20，1/10，1/5，1/3等。M2≥50mm；W2≥320mm；H2≥180mm。其中，M2为壳体100的厚度；W2为壳体100的长度；H2为壳体100的高度；壳体100的厚度方向朝第二方向Y，壳体100的高度方向朝泄压方向Z，壳体100的长度方向朝第一方向X，第一方向X、第二方向Y和泄压方向Z两两相交。
如此，通过对壳体100的长度W2、高度H2和厚度M2的控制，进而控制壳体100的形状和规格，从而对壳体100内所安装的电芯200的数量、规格等形成相应的约束，进而对电芯200的总容量(即各电芯200的容量C1之和)和能量密度进行控制，在满足电池的容量需求的同时，防止无限做大超出电池的容量限制，使得电池兼顾安全性和导电稳定性。
可选地，壳体100可以满足：0.06≤M2/W2≤0.3；比如M2/W2＝0.06，0.1，0.2，0.3等。400mm≤W2≤1000mm；比如W2＝400mm，600mm，800mm，1000mm等。60mm≤M2≤120mm，比如M2＝60mm，80mm，100mm，120mm等。如此可以进一步控制壳体100形状和规格，进而使得电芯200的总容量和能量密度得到更好的约束，进一步使电池兼顾安全性和导电稳定性。
可选地，端盖组件300还可以包括极柱330，极柱330电连接电芯200，从而形成导电回路，使电池实现电能传导。极柱330设于端盖本体310，极柱330共两个，防爆阀320位于两个极柱330之间。
极柱330可以满足：0.75≤L4/W3≤0.90，比如L4/W3＝0.75，0.8，0.9 等。或者，40mm≤W3-L4≤100mm；比如W3-L4＝40mm，60mm，80mm，100mm等。W3＝W2；L4≥300mm。其中，L4为两个极柱330之间的中心距；W3为端盖本体310的长度；端盖本体310的长度方向朝第一方向X。
在极柱330的设置上，两个极柱330之间的中心距L4需要足够的宽度，这样一方面可以保证极柱330与外接电连接器件之间所形成的导电回路的稳定性，另一方面可以给端盖本体310上的防爆阀320和注液孔等留足加工和安装空间，进而提升成型良率。同时，两个极柱330之间的中心距L4不能过大，避免太靠近端盖本体310边缘处，影响端盖本体310边缘位置的强度，以及占用其他零部件，比如后文中转接件360、引脚361等位置的设置。
故将极柱330的中心距L4、端盖本体310的长度W3之间的相对位置关系按照上述的0.75≤L4/W3≤0.90，或者，40mm≤W3-L4≤100mm控制，以使极柱330的设置在避免对其他零部件造成安装干涉的同时，能够保证端盖本体310足够的强度，进而保证端盖组件300的稳固不变形。
而设置端盖本体310的长度W3＝壳体100的长度W2，可以使端盖组件300既实现对壳体100有效封盖的，又避免出现多余材料浪费。
可选地，极柱330可以满足：D4min≥18mm；其中，D4min为极柱330的最小直径。如此可以保证极柱330的过流面积，进而保证电池的导电性能。
可选地，端盖组件300还可以包括压块340；压块340共两个，压块340设于端盖本体310，且套设于极柱330；压块340可以满足：0.75≤L5/W3≤0.90；比如L5/W3＝0.75，0.8，0.9等。D5≥36mm；其中，L5为两个压块340之间的中心距；D5为压块340的边长或者直径。
如此，通过对压块340的中心距L5、和端盖本体310的长度W3之间相对位置关系进行控制，使得压块340的设计不仅可对端盖组件300加固，以保证端盖组件300结构稳定性，而且还能够与极柱330的中心距L4尺寸适配，从而对极柱330进行充分的围绕保护。
而通过对压块340的边长或者直径D5的控制，使得压块340与外接模组连接的汇流排有足够的焊接面积，可以满足电池的过流要求，从而保证导电能力。
可选地，端盖组件300还可以包括转接件360，转接件360设于端盖本体310，转接件360连接极柱330，并且转接件360设有用于连接电芯200的引脚361，引脚361可以满足：M7≥50mm；H7≥80mm。
而通常来说，两个极柱330分别为电池的正极柱和负极柱，同样，电芯200也具有对应的正极和负极，转接件360也对应设置两个，其中一个分别连接正极柱和电芯200的正极，另一个分别连接负极柱和电芯200的负极。
其中，用于连接电芯200正极的转接件360材质为铝，而用于连接电芯200负极的转接件360材质为铜，而考虑到铜和铝的过流能力不一样，故引脚361还可以满足：
在引脚361连接电芯200的正极的情况下，N7≥2.5mm；在引脚361连接电芯200的负极的情况下，N7′≥1.5mm。
其中，M7为引脚361的宽度；H7为引脚361的长度；N7和N7′为引脚361的厚度；引脚361的宽度方向朝第二方向Y，引脚361的长度方向朝泄压方向Z，引脚361的厚度朝第一方向X，第一方向X、第二方向Y、泄压方向Z两两相交，比如相互垂直。
如此设置，可以充分保证引脚361自身的过流能力，进而使转接件360在正极柱和电芯200的正极之间，以及在负极柱和电芯200的负极之间发挥良好的导电作用。
可选地，端盖本体310可以满足：2mm≤H3≤4mm；比如H3＝2mm，3mm，4mm等。其中，H3为端盖本体310的厚度；端盖本体310的厚度方向朝泄压方向Z。
端盖本体310厚度太薄不利于保证端盖组件300的结构稳定性，厚度太厚会出现材料浪费，故按照上述尺寸控制，使得端盖本体310兼顾强度性能和节省材料成本。
可选地，壳体100可以满足：T2≥0.6mm；T2为壳体100的壁厚。如此，壳体100具有足够的强度，有效防止受磕碰变形。
可选地，壳体100可以满足：
0.6mm≤T21≤1mm；比如T21＝0.5mm，0.8mm，1mm等。
0.6mm≤T22≤1.2mm；比如T22＝0.6mm，0.8mm，1mm，1.2mm等。
1.2mm≤T23≤2.5mm；比如T23＝1.2mm，1.5mm，1.8mm，2.5mm等。
T22＞T21。
T21为壳体100的大面的壁厚；T22为壳体100的侧面的壁厚；T23为壳体100的底面的壁厚。壳体100的底面与电芯200沿泄压方向Z依次设置，壳体100的大面和壳体100的侧面围成壳体100的周壁，壳体100的周壁围 合连接于壳体100的底面以形成容纳腔。这样可以进一步提高壳体100的结构强度，防止磕碰损坏变形。
可选地，壳体100可以满足：V2≥8000000mm3；V2为壳体100的体积。如此，壳体100内可以容纳足够数量的电芯200，进而使电池具有足够的电容量。
可选地，端盖组件300可以设有连通容纳腔的注液孔350，注液孔350与泄压孔间隔设置；注液孔350可以满足：D6≥5mm；其中，D6为注液孔350的直径。注液孔350用于向电池内部注入电解液，通过上述尺寸控制，使得注液孔350具有足够的流通面积，从而满足注液能力，提高注液效率。
本申请还公开一种电池包，可以上述的电池。
本申请还公开一种用电设备，可以包括上述的电池包。比如用电设备为电动汽车、船舶、航天器、计算机等。
最后应说明的是：以上各实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述各实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分或者全部技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (16)

  1. 一种电池，其中，包括：
    壳体(100)，设有容纳腔和连通所述容纳腔的开口；
    电芯(200)，设于所述容纳腔；
    端盖组件(300)，包括端盖本体(310)和防爆阀(320)，所述端盖本体(310)封盖所述开口，所述端盖本体(310)设有连通所述容纳腔的泄压孔，所述防爆阀(320)密封于所述泄压孔；
    所述电芯(200)满足关系式：1.0mm2/AH≤S1/C1≤2.5mm2/AH；800AH≤C1≤3000AH；
    其中，S1为所述防爆阀(320)朝向泄压方向(Z)的横截面的面积；
    C1为所述电芯(200)的容量。
  2. 根据权利要求1所述的电池，其中，所述电芯(200)满足：180mm≤H1≤360mm；
    其中，H1为所述电芯(200)的高度；
    所述电芯(200)的高度方向朝所述泄压方向(Z)。
  3. 根据权利要求1所述的电池，其中，所述防爆阀(320)满足：
    S1≥1200mm2。
  4. 根据权利要求1所述的电池，其中，所述壳体(100)满足：
    1/20≤M2/W2≤1/3；
    M2≥50mm；W2≥320mm；H2≥180mm；
    其中，M2为所述壳体(100)的厚度；W2为所述壳体(100)的长度；H2为所述壳体(100)的高度；
    所述壳体(100)的厚度方向朝第二方向(Y)，所述壳体(100)的高度方向朝所述泄压方向(Z)，所述壳体(100)的长度方向朝第一方向(X)，所述第一方向(X)、所述第二方向(Y)和所述泄压方向(Z)两两相交。
  5. 根据权利要求4所述的电池，其中，所述壳体(100)满足：
    0.06≤M2/W2≤0.3；400mm≤W2≤1000mm；60mm≤M2≤120mm。
  6. 根据权利要求4所述的电池，其中，所述端盖组件(300)还包括极柱(330)，所述极柱(330)电连接所述电芯(200)，所述极柱(330)设于所述端盖本体(310)，所述极柱(330)共两个，所述防爆阀(320)位于两个所述极柱(330)之间，所述极柱(330)满足：
    0.75≤L4/W3≤0.90，或者，40mm≤W3-L4≤100mm；
    W3＝W2；L4≥300mm；
    其中，L4为两个所述极柱(330)之间的中心距；W3为所述端盖本体(310)的长度；
    所述端盖本体(310)的长度方向朝所述第一方向(X)。
  7. 根据权利要求6所述的电池，其中，所述极柱(330)满足：
    D4min≥18mm；
    其中，D4min为所述极柱(330)的最小直径。
  8. 根据权利要求6所述的电池，其中，所述端盖组件(300)还包括压块(340)；所述压块(340)共两个，所述压块(340)设于所述端盖本体(310)，且套设于所述极柱(330)；所述压块(340)满足：
    0.75≤L5/W3≤0.90；
    D5≥36mm；
    其中，L5为两个压块(340)之间的中心距；D5为压块(340)的边长或者直径。
  9. 根据权利要求6所述的电池，其中，所述端盖组件(300)还包括转接件(360)，所述转接件(360)设于所述端盖本体(310)，所述转接件(360)连接所述极柱(330)，并且所述转接件(360)设有用于连接所述电芯(200)的引脚(361)，所述引脚(361)满足：
    M7≥50mm；H7≥80mm；
    在所述引脚(361)连接所述电芯(200)的正极的情况下，N7≥2.5mm；
    在所述引脚(361)连接所述电芯(200)的负极的情况下，N7′≥1.5mm；
    其中，M7为所述引脚(361)的宽度；H7为所述引脚(361)的长度；N7和N7′为所述引脚(361)的厚度；
    所述引脚(361)的宽度方向朝第二方向(Y)，所述引脚(361)的长度方向朝所述泄压方向(Z)，所述引脚(361)的厚度朝第一方向(X)，所述第一方向(X)、所述第二方向(Y)、所述泄压方向(Z)两两相交。
  10. 根据权利要求1～9中任一项所述的电池，其中，所述端盖本体(310)满足：
    2mm≤H3≤4mm；
    其中，H3为所述端盖本体(310)的厚度；
    所述端盖本体(310)的厚度方向朝所述泄压方向(Z)。
  11. 根据权利要求1～9中任一项所述的电池，其中，所述壳体(100)满足：
    T2≥0.6mm；T2为所述壳体(100)的壁厚。
  12. 根据权利要求11所述的电池，其中，所述壳体(100)满足：
    0.6mm≤T21≤1mm；0.6mm≤T22≤1.2mm；1.2mm≤T23≤2.5mm；T22＞
    T21；
    T21为所述壳体(100)的大面的壁厚；T22为所述壳体(100)的侧面的壁厚；T23为所述壳体(100)的底面的壁厚；
    所述壳体(100)的底面与所述电芯(200)沿所述泄压方向(Z)依次设置，所述壳体(100)的大面和壳体(100)的所述侧面围成所述壳体(100)的周壁，所述壳体(100)的周壁围合连接于所述壳体(100)的底面以形成所述容纳腔。
  13. 根据权利要求1～9中任一项所述的电池，其中，所述壳体(100)满足：
    V2≥8000000mm3；
    V2为所述壳体(100)的体积。
  14. 根据权利要求1～9中任一项所述的电池，其中，所述端盖组件(300)设有连通所述容纳腔的注液孔(350)，所述注液孔(350)与所述泄压孔间隔设置；所述注液孔(350)满足：
    D6≥5mm；
    其中，D6为所述注液孔(350)的直径。
  15. 一种电池包，其中，包括权利要求1～14中任一项所述的电池。
  16. 一种用电设备，其中，包括权利要求15所述的电池包。
PCT/CN2023/134358 2022-12-12 2023-11-27 一种电池、电池包及用电设备 Ceased WO2024125285A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202211597078.7A CN118198643B (zh) 2022-12-12 2022-12-12 一种电池、电池包及用电设备
CN202211597078.7 2022-12-12

Publications (1)

Publication Number Publication Date
WO2024125285A1 true WO2024125285A1 (zh) 2024-06-20

Family

ID=91397172

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2023/134358 Ceased WO2024125285A1 (zh) 2022-12-12 2023-11-27 一种电池、电池包及用电设备

Country Status (2)

Country Link
CN (1) CN118198643B (zh)
WO (1) WO2024125285A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119742513A (zh) * 2024-12-25 2025-04-01 蜂巢能源科技股份有限公司 电芯盖板组件、电芯及电池包

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2026044487A1 (zh) * 2024-08-27 2026-03-05 江苏懋略科技有限公司 电芯框架及加工工艺及具有该电芯框架的电池

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020081483A1 (en) * 1997-07-29 2002-06-27 Ngk Insulators, Ltd. Lithium secondary battery
CN215220904U (zh) * 2021-07-14 2021-12-17 厦门海辰新能源科技有限公司 电池
CN114628846A (zh) * 2022-05-12 2022-06-14 比亚迪股份有限公司 电池、电池模组、电池包和车辆
CN219017847U (zh) * 2022-12-12 2023-05-12 厦门海辰储能科技股份有限公司 一种电池、电池包及用电设备

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109314216B (zh) * 2016-06-08 2021-08-17 远景Aesc 日本有限公司 非水电解质二次电池
CN208189695U (zh) * 2018-05-22 2018-12-04 宁德时代新能源科技股份有限公司 电池模组
CN109585721A (zh) * 2019-01-17 2019-04-05 潍坊裕元电子有限公司 一种扣式微型可充电锂电池结构组件
CN112713341B (zh) * 2020-12-31 2023-04-28 中创新航科技股份有限公司 盖板组件及其制备方法、电池与电池模组

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020081483A1 (en) * 1997-07-29 2002-06-27 Ngk Insulators, Ltd. Lithium secondary battery
CN215220904U (zh) * 2021-07-14 2021-12-17 厦门海辰新能源科技有限公司 电池
CN114628846A (zh) * 2022-05-12 2022-06-14 比亚迪股份有限公司 电池、电池模组、电池包和车辆
CN219017847U (zh) * 2022-12-12 2023-05-12 厦门海辰储能科技股份有限公司 一种电池、电池包及用电设备

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN119742513A (zh) * 2024-12-25 2025-04-01 蜂巢能源科技股份有限公司 电芯盖板组件、电芯及电池包

Also Published As

Publication number Publication date
CN118198643B (zh) 2025-11-25
CN118198643A (zh) 2024-06-14

Similar Documents

Publication Publication Date Title
CN219017847U (zh) 一种电池、电池包及用电设备
WO2024125285A1 (zh) 一种电池、电池包及用电设备
EP4343942A2 (en) Power battery pack and electric vehicle
CN219575884U (zh) 电池单体、电池及用电装置
WO2024027034A1 (zh) 端盖组件、电池单体、电池以及用电装置
JP7490761B2 (ja) トップカバー組立体、二次電池、電池モジュール及び装置
KR102917074B1 (ko) 전지 셀, 전지 및 전지 셀을 전원으로 사용하는 장치
EP3790080B1 (en) Battery module and battery pack
WO2024045048A1 (zh) 电池单体、电池以及用电装置
CN115133183A (zh) 单体电池及电池包
WO2024113292A1 (zh) 电池单体、电池以及用电装置
CN218070150U (zh) 一种电池的绝缘件、端盖组件、电池、电池包及用电设备
CN115498372B (zh) 电化学装置及电子设备
WO2024040545A1 (zh) 顶盖组件、电池单体、电池及用电装置
WO2023225903A1 (zh) 电池单体、电池以及用电装置
US20240162535A1 (en) Battery cell, battery, and power consuming device
CN115411419A (zh) 电池单体、电池及用电装置
CN221201333U (zh) 电池单体、电池以及用电装置
CN118888986A (zh) 电池及电池包
CN218919073U (zh) 单体电池及电池包
CN218070125U (zh) 连接片、顶盖组件、电池、电池模组及用电设备
WO2024103201A1 (zh) 端盖组件、电池单体、电池和用电装置
CN118922971A (zh) 电池单体、电池及用电装置
CN115579586A (zh) 电池包及用电设备
CN219832848U (zh) 电池模组和车辆

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 23902483

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 202547066122

Country of ref document: IN

NENP Non-entry into the national phase

Ref country code: DE

WWP Wipo information: published in national office

Ref document number: 202547066122

Country of ref document: IN

122 Ep: pct application non-entry in european phase

Ref document number: 23902483

Country of ref document: EP

Kind code of ref document: A1