WO2020133745A1 - 电池模组 - Google Patents

电池模组 Download PDF

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Publication number
WO2020133745A1
WO2020133745A1 PCT/CN2019/079233 CN2019079233W WO2020133745A1 WO 2020133745 A1 WO2020133745 A1 WO 2020133745A1 CN 2019079233 W CN2019079233 W CN 2019079233W WO 2020133745 A1 WO2020133745 A1 WO 2020133745A1
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WO
WIPO (PCT)
Prior art keywords
bead
battery
battery module
extinguishing agent
bottom plate
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/CN2019/079233
Other languages
English (en)
French (fr)
Inventor
陈兴地
游凯杰
李子源
项延火
史东洋
胡飞
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.)
Contemporary Amperex Technology Co Ltd
Original Assignee
Contemporary Amperex 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 Contemporary Amperex Technology Co Ltd filed Critical Contemporary Amperex Technology Co Ltd
Priority to EP19906563.2A priority Critical patent/EP3866233B1/en
Publication of WO2020133745A1 publication Critical patent/WO2020133745A1/zh
Priority to US17/357,057 priority patent/US20210320337A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • 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
    • H01M50/14—Primary casings; Jackets or wrappings for protecting against damage caused by external factors
    • H01M50/143—Fireproof; Explosion-proof
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
    • A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/271—Lids or covers for the racks or secondary casings
    • 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
    • H01M50/342—Non-re-sealable arrangements
    • H01M50/3425—Non-re-sealable arrangements in the form of rupturable membranes or weakened parts, e.g. pierced with the aid of a sharp member
    • 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
    • H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
    • H01M50/358—External gas exhaust passages located on the battery cover or case
    • 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
    • H01M50/383—Flame arresting or ignition-preventing means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M6/00—Primary cells; Manufacture thereof
    • H01M6/50—Methods or arrangements for servicing or maintenance, e.g. for maintaining operating temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary 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
    • 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 the technical field of batteries, in particular to a battery module.
  • the object of the present invention is to provide a battery module whose fire extinguishing agent is stored in a fixed position near the battery riot valve to prevent the fire extinguishing agent from flowing around and the fire extinguishing agent can flow in time when the riot valve ruptures To the inside of the battery, thereby reducing the degree of thermal runaway.
  • the present invention provides a battery module, which includes a plurality of batteries, an upper cover, and a bead.
  • the plurality of batteries are arranged in the longitudinal direction, and each battery is provided with an explosion-proof valve.
  • the upper cover is provided above the plurality of batteries in the up-down direction.
  • the pressure bar is disposed between the plurality of batteries and the upper cover and covers the explosion-proof valve of the battery, and the pressure bar has: a body portion; and a bottom plate portion connected to the body portion and forming a receiving cavity together with the body portion, and the receiving cavity is enclosed in the receiving cavity Extinguishing agent.
  • the bottom plate portion of the bead is set to melt out the fire extinguishing agent in the storage cavity.
  • the thickness of the bottom plate portion is smaller than the thickness of the main body portion.
  • the bottom plate portion has: a body; and a plurality of weak areas, which are arranged on the body at intervals in the longitudinal direction.
  • Each weak zone corresponds to an explosion-proof valve of a battery and is set to melt out the fire extinguishing agent in the containing cavity.
  • the bead also has an opening for injecting fire extinguishing agent into the containing cavity.
  • the battery module also includes: a sealing cover, an opening for encapsulating the bead after the fire extinguishing agent is injected into the containing cavity. The openings of the bead are consistent with the receiving cavity in number.
  • the receiving cavity there is one receiving cavity in number, and the receiving cavity extends in the longitudinal direction and covers all the explosion-proof valves of the batteries.
  • the plurality of receiving cavities includes a first receiving cavity and a second receiving cavity.
  • the bead also has a partition wall that extends in the vertical direction and is connected to the bottom plate portion and the main body portion.
  • the first accommodating cavity and the second accommodating cavity are respectively located on both sides of the partition wall in the longitudinal direction, and the first accommodating cavity and the second accommodating cavity respectively cover the explosion-proof valves of the corresponding batteries.
  • the pressing bar is fixed to the top cover plates of the plurality of batteries.
  • the battery module further includes: two end plates, which are respectively arranged at both ends of the plurality of batteries in the longitudinal direction, and the bead is fixed to the two end plates.
  • the melting point of the bead is 200°C to 500°C.
  • the material of the bead is metal.
  • the extinguishing agent is fixedly stored in the receiving cavity of the bead, the waste caused by the extinguishing agent flowing around is avoided, and the amount of the extinguishing agent can be kept at a certain level all the time.
  • the high-temperature material inside the battery will break through the explosion-proof valve.
  • the bottom plate portion of the bead can be melted by the high-temperature material and be discharged from the extinguishing agent in the storage cavity in time, so that the extinguishing agent can quickly flow into Go to the inside of the battery to reduce the temperature of the battery, thereby preventing the spread of thermal runaway, greatly reducing the degree of thermal runaway, so as to gain time for passengers to escape and/or artificially extinguish thermal runaway.
  • FIG. 1 is an exploded view of the battery module of the present invention.
  • FIG. 2 is a schematic cross-sectional view of the components in FIG. 1 after assembly, in which the upper cover is omitted.
  • FIG. 3 is an enlarged view of the circled part in FIG. 2.
  • FIG. 4 is a perspective view of the bead of FIG. 1 seen from the back.
  • FIG. 5 is a modification of FIG. 4.
  • FIG. 6 is another modification of FIG. 4 and shows a sealing cover corresponding to each opening.
  • FIG. 7 is a schematic diagram of an internal cross section of the bead of FIG. 6.
  • connection should be understood in a broad sense, for example, “connection” may be a fixed connection, or a detachable connection, or an integral connection, or an electrical connection , Or signal connection; “connection” can be directly connected or indirectly connected through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.
  • the battery module of the present application includes a plurality of batteries 1, an upper cover 2, a bead 3, an extinguishing agent 4, a sealing cover 5, and an end plate 6.
  • the plurality of batteries 1 are arranged along the longitudinal direction Y, and each battery 1 includes a top cover plate 12, an electrode terminal 13 provided on the top cover plate 12, and an explosion-proof valve 11.
  • the upper cover 2 is disposed above the plurality of batteries 1 in the up-down direction Z to protect the plurality of batteries 1 so as to avoid contact with the top cover plate 12 and/or electrode terminals 13 of the battery 1 due to external conductive materials Short circuit problems caused.
  • the bead 3 is disposed between the plurality of batteries 1 and the upper cover 2 and covers the explosion-proof valve 11 of the battery 1.
  • the bead 3 has a main body portion 31 and a bottom plate portion 32 that is connected to the main body portion 31 and forms an accommodating cavity 33 together with the main body portion 31, and the extinguishing agent 4 is enclosed in the accommodating cavity 33.
  • the bottom plate portion 32 of the bead 3 is provided to melt out the fire extinguishing agent 4 in the storage chamber 33 after being melted.
  • the extinguishing agent 4 is fixedly stored in the receiving cavity 33 of the bead 3, the waste caused by the flow of the extinguishing agent 4 around is avoided, and thus the amount of the extinguishing agent 4 can always be kept at a certain level Level.
  • the melting point of the bead 3 is lower than the internal temperature of the battery 1 when the battery 1 thermally loses control, preferably the melting point of the bead 3 may be 200°C ⁇ 500°C.
  • the material of the bead 3 may be metal.
  • the material of the bead 3 is aluminum.
  • the fire extinguishing agent 4 may be common fire extinguishing substances such as water, dry powder, carbon dioxide and the like.
  • the thickness of the main body portion 31 is greater than that of the bottom plate portion 32 thickness.
  • the bottom plate portion 32 of the bead 3 may be a thin-walled structure with a uniform thickness.
  • the bottom plate portion 32 of the bead 3 may have: a body 321; and a plurality of weak regions 322, which are spaced from the body 321 along the longitudinal direction Y.
  • Each weak zone 322 corresponds to the explosion-proof valve 11 of one battery 1 and is set to be melted and discharged out of the extinguishing agent 4 in the storage chamber 33.
  • the extinguishing agent 4 in the containing chamber 33 is prevented from flowing to Except for other places inside each battery 1 (such as on the top cover 12 of the battery 1), the fire extinguishing agent 4 can be fully utilized, and the temperature of the corresponding battery 1 can be quickly reduced.
  • the bead 3 further has an opening 34 for injecting the extinguishing agent 4 into the receiving cavity 33 before packaging.
  • the sealing cover 5 injects the extinguishing agent 4 into the accommodating cavity 33 and seals the opening 34 of the bead 3.
  • the openings 34 of the bead 3 are identical in number to the receiving cavity 33.
  • the number of the receiving chambers 33 is one, and the receiving chambers 33 extend in the longitudinal direction Y and cover all the explosion-proof valves 11 of the batteries 1.
  • each opening 34 of the bead 3 penetrates the upper wall of the main body 31 in the vertical direction Z and communicates with the corresponding receiving chamber 33.
  • the plurality of receiving chambers 33 includes a first receiving chamber 33A and a second receiving chamber 33B.
  • the bead 3 further includes a partition wall 35 that extends in the vertical direction Z and is connected to the bottom plate portion 32 and the main body portion 31.
  • the partition wall 35 encloses the first storage chamber 33A and the second storage chamber 33B together with the main body portion 31 and the bottom plate portion 32.
  • the number of the partition walls 35 may be one or more.
  • the first accommodating chamber 33A and the second accommodating chamber 33B are respectively located on both sides of the partition wall 35 along the longitudinal direction Y, and the first accommodating chamber 33A and the second accommodating chamber 33B respectively cover the corresponding explosion-proof valves 11 of the battery 1.
  • the two end plates 6 are respectively disposed at both ends of the plurality of batteries 1 along the longitudinal direction Y to clamp and fix the plurality of batteries 1.
  • the bead 3 can be fixed (eg, bonded) to the top cover plates 12 of the plurality of batteries 1, or can be fixed to the two end plates 6.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Battery Mounting, Suspending (AREA)
  • Gas Exhaust Devices For Batteries (AREA)

Abstract

本发明提供了一种电池模组，其包括多个电池、上盖以及压条。压条覆盖电池的防爆阀且具有：主体部；以及底板部，连接于主体部并与主体部一起形成收容腔，且收容腔内封装有灭火剂。压条的底板部设置成能够被熔化。由于灭火剂固定存储在压条的收容腔中，从而避免了由于灭火剂四处流动而造成的浪费，进而使得灭火剂的量能够始终保持在一定水平。当电池发生热失控时，电池内部的高温物质会冲破防爆阀，而此时由于压条的底板部能够被所述高温物质熔化并及时泄出收容腔中的灭火剂，从而使得灭火剂能够迅速流入到电池内部，以降低电池的温度，由此阻止了热失控的扩散，极大地降低了热失控的程度。

Description

电池模组 技术领域
本发明涉及电池技术领域，尤其涉及一种电池模组。
背景技术
在电池模组的使用过程中，通常存在热失控的风险。目前，为了降低热失控的风险以及减轻热失控带来的影响，目前常用的方式如下：(1)在电池模组的箱体中布置复杂的灭火液管道，其设计、装配难度高、成本高，且对箱体的空间占用大，从而导致电池模组的能量密度低；(2)灭火液直接设置在箱体中，在电池模组的使用过程中，灭火液容易到处流动并粘附在其他位置，从而使得箱体内的有效灭火液越来越少，且在发生热失控的瞬间，可能灭火液刚好处于电池喷火位置之外，进而导致不能及时有效地灭火；(3)在电池喷火位置布置耐火烧材料以顶住火烧，但是其容易使电池模组内热失控扩散，导致越来越多的电池热失控，进而加大热失控的程度。
发明内容
鉴于背景技术中存在的问题，本发明的目的在于提供一种电池模组，其灭火剂存储在靠近电池防暴阀的固定位置，避免了灭火剂四处流动且在防暴阀破裂时灭火剂能够及时流到电池内部，从而降低了热失控的程度。
为了实现上述目的，本发明提供了一种电池模组，其包括多个电池、上盖以及压条。所述多个电池沿纵向排列，各电池设置有防爆阀。上盖沿上下方向设置于所述多个电池上方。压条设置于所述多个电池与上盖之间并覆盖电池的防爆阀，且压条具有：主体部；以及底板部，连接于主体部并与主体部一起形成收容腔，且收容腔内封装有灭火剂。其中，压条的底板部设置成被熔化后泄出收容腔中的灭火剂。
底板部的厚度小于主体部的厚度。
底板部具有：本体；以及多个薄弱区，沿纵向间隔设置于本体。各薄弱 区对应一个电池的防爆阀且设置成被熔化后泄出收容腔中的灭火剂。
压条还具有：开口，用于向收容腔内注入灭火剂。电池模组还包括：密封盖，在收容腔内注入灭火剂后封装压条的开口。压条的开口在数量上与收容腔一致。
收容腔在数量上为一个，所述收容腔沿纵向延伸并覆盖所有电池的防爆阀。
收容腔在数量上为多个，所述多个收容腔包括第一收容腔和第二收容腔。压条还具有：分隔壁，沿上下方向延伸并连接于底板部和主体部。第一收容腔和第二收容腔沿纵向分别位于分隔壁两侧，且第一收容腔和第二收容腔分别覆盖对应的电池的防爆阀。
压条固定于所述多个电池的顶盖板。
电池模组还包括：两个端板，沿纵向分别设置于所述多个电池两端，且压条固定于所述两个端板。
压条的熔点为200℃～500℃。
压条的材质为金属。
本发明的有益效果如下：
由于灭火剂固定存储在压条的收容腔中，从而避免了由于灭火剂四处流动而造成的浪费，进而使得灭火剂的量能够始终保持在一定水平。当电池发生热失控时，电池内部的高温物质会冲破防爆阀，而此时由于压条的底板部能够被所述高温物质熔化并及时泄出收容腔中的灭火剂，从而使得灭火剂能够迅速流入到电池内部，以降低电池的温度，由此阻止了热失控的扩散，极大地降低了热失控的程度，从而为乘客争取逃生时间和/或人工扑灭热失控争取时间。
附图说明
图1是本发明的电池模组的爆炸图。
图2是图1中的部件装配后的截面示意图，其中省去了上盖。
图3是图2中的圆圈部分的放大图。
图4是图1中的压条从背面看到的立体图。
图5是图4的一变形例。
图6是图4的另一变形例，并示出了各开口对应的密封盖。
图7是图6中的压条的内部截面示意图。
其中，附图标记说明如下：
1电池                         33A第一收容腔
11防爆阀                      33B第二收容腔
12顶盖板                      34开口
2上盖                         35分隔壁
3压条                         4灭火剂
31主体部                      5密封盖
32底板部                      6端板
321本体                       X横向
322薄弱区                     Y纵向
33收容腔                      Z上下方向
具体实施方式
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本申请进行进一步详细说明。应当理解，此处所描述的具体实施例仅仅用以解释本申请，并不用于限定本申请。
在本申请的描述中，除非另有明确的规定和限定，术语“第一”、“第二”仅用于描述的目的，而不能理解为指示或暗示相对重要性；术语“多个”是指两个或两个以上；除非另有规定或说明，术语“连接”、应做广义理解，例如，“连接”可以是固定连接，也可以是可拆卸连接，或一体地连接，或电连接，或信号连接；“连接”可以是直接相连，也可以通过中间媒介间接相连。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
本说明书的描述中，需要理解的是，本申请实施例所描述的“上”、“下”、等方位词是以附图所示的角度来进行描述的，不应理解为对本申请实施例的限定。此外，在上下文中，还需要理解的是，当提到一个元件连接在另一个元件“上”或者“下”时，其不仅能够直接连接在另一个元件“上”或者“下”，也可以通过中间元件间接连接在另一个元件“上”或者“下”。下面通过具 体的实施例并结合附图对本申请做进一步的详细描述。
参照图1和图2，本申请的电池模组包括多个电池1、上盖2、压条3、灭火剂4、密封盖5、以及端板6。
所述多个电池1沿纵向Y排列，各电池1包括顶盖板12以及设置于顶盖板12的电极端子13和防爆阀11。
上盖2沿上下方向Z设置于所述多个电池1上方，用于对所述多个电池1进行防护，以避免由于外界导电物质接触电池1的顶盖板12和/或电极端子13而引起的短路问题。
压条3设置于所述多个电池1与上盖2之间并覆盖电池1的防爆阀11。参照图3和图7，压条3具有：主体部31；以及底板部32，连接于主体部31并与主体部31一起形成收容腔33，且收容腔33内封装有灭火剂4。其中，压条3的底板部32设置成被熔化后泄出收容腔33中的灭火剂4。
在本申请的电池模组中，由于灭火剂4固定存储在压条3的收容腔33中，从而避免了由于灭火剂4四处流动而造成的浪费，进而使得灭火剂4的量能够始终保持在一定水平。当电池1发生热失控时，电池1内部的高温物质(包括高温高压气体、电解液以及其他物质)会冲破防爆阀11，而此时由于压条3的底板部32能够被所述高温物质熔化并及时泄出收容腔33中的灭火剂4，从而使得灭火剂4能够迅速流入到电池1内部，以降低电池1的温度，由此阻止了热失控的扩散，极大地降低了热失控的程度，从而为乘客争取逃生时间和/或人工扑灭热失控争取时间。
为了保证压条3的底板部32能够顺利地被从电池1内部冲出的高温物质熔化，压条3的熔点低于电池1发生热失控时电池1内部温度，优选地压条3的熔点可为200℃～500℃。
压条3的材质可为金属。优选地，压条3的材质为铝。灭火剂4可以为水、干粉、二氧化碳等常见的灭火物质。
在电池1发生热失控时，为了防止从电池1内部冲出的高温物质熔化压条3的底板部32后继续熔化主体部31而造成灭火剂4的浪费，主体部31的厚度大于底板部32的厚度。
在一实施例中，参照图3和图4，压条3的底板部32可为厚度均匀的薄壁结构。
在另一实施例中，参照图1和图2，压条3的底板部32可具有：本体321；以及多个薄弱区322，沿纵向Y间隔设置于本体321。各薄弱区322对应一个电池1的防爆阀11且设置成被熔化后泄出收容腔33中的灭火剂4。当其中一个或几个电池1发生热失控时，仅与各电池1对应的薄弱区322被从对应电池1内部冲出的高温物质熔化，此时避免了收容腔33中的灭火剂4流到除了各电池1内部的其它地方(如电池1的顶盖板12上)，由此使得灭火剂4能够被充分利用，进而能够快速降低对应电池1的温度。
参照图1和图6，压条3还具有：开口34，用于在封装前向收容腔33内注入灭火剂4。密封盖5在收容腔33内注入灭火剂4后封装压条3的开口34。其中，压条3的开口34在数量上与收容腔33一致。
在一实施例中，参照图4和图5，收容腔33在数量上为一个，所述收容腔33沿纵向Y延伸并覆盖所有电池1的防爆阀11。
在另一实施例中，参照图6和图7，收容腔33在数量上为多个，压条3的各开口34沿上下方向Z贯通主体部31的上壁并连通于对应的收容腔33。
所述多个收容腔33包括第一收容腔33A和第二收容腔33B。压条3还具有：分隔壁35，沿上下方向Z延伸并连接于底板部32和主体部31。分隔壁35与主体部31、底板部32一起围成第一收容腔33A和第二收容腔33B。其中，分隔壁35在数量上可为一个或多个。
第一收容腔33A和第二收容腔33B沿纵向Y分别位于分隔壁35两侧，且第一收容腔33A和第二收容腔33B分别覆盖对应的电池1的防爆阀11。
两个端板6沿纵向Y分别设置于所述多个电池1两端，以夹紧固定所述多个电池1。其中，压条3可固定(如粘接)于所述多个电池1的顶盖板12，也可固定于两个端板6。

Claims (10)

  1. 一种电池模组，包括：
    多个电池(1)，沿纵向(Y)排列，各电池(1)设置有防爆阀(11)；
    上盖(2)，沿上下方向(Z)设置于所述多个电池(1)上方；以及
    压条(3)，设置于所述多个电池(1)与上盖(2)之间并覆盖电池(1)的防爆阀(11)，且压条(3)具有：主体部(31)；以及底板部(32)，连接于主体部(31)并与主体部(31)一起形成收容腔(33)，且收容腔(33)内封装有灭火剂(4)；
    其中，压条(3)的底板部(32)设置成被熔化后泄出收容腔(33)中的灭火剂(4)。
  2. 根据权利要求1所述的电池模组，其特征在于，底板部(32)的厚度小于主体部(31)的厚度。
  3. 根据权利要求1所述的电池模组，其特征在于，
    底板部(32)具有：本体(321)；以及多个薄弱区(322)，沿纵向(Y)间隔设置于本体(321)；
    各薄弱区(322)对应一个电池(1)的防爆阀(11)且设置成被熔化后泄出收容腔(33)中的灭火剂(4)。
  4. 根据权利要求1所述的电池模组，其特征在于，
    压条(3)还具有：开口(34)，用于向收容腔(33)内注入灭火剂(4)；
    电池模组还包括：密封盖(5)，在收容腔(33)内注入灭火剂(4)后封装压条(3)的开口(34)；
    压条(3)的开口(34)在数量上与收容腔(33)一致。
  5. 根据权利要求4所述的电池模组，其特征在于，收容腔(33)在数量上为一个，所述收容腔(33)沿纵向(Y)延伸并覆盖所有电池(1)的防爆阀(11)。
  6. 根据权利要求4所述的电池模组，其特征在于，
    收容腔(33)在数量上为多个，所述多个收容腔(33)包括第一收容腔(33A)和第二收容腔(33B)；
    压条(3)还具有：分隔壁(35)，沿上下方向(Z)延伸并连接于底板部(32)和主体部(31)；
    第一收容腔(33A)和第二收容腔(33B)沿纵向(Y)分别位于分隔壁(35)两侧，且第一收容腔(33A)和第二收容腔(33B)分别覆盖对应的电池(1)的防爆阀(11)。
  7. 根据权利要求1所述的电池模组，其特征在于，压条(3)固定于所述多个电池(1)的顶盖板(12)。
  8. 根据权利要求1所述的电池模组，其特征在于，电池模组还包括：两个端板(6)，沿纵向(Y)分别设置于所述多个电池(1)两端，且压条(3)固定于所述两个端板(6)。
  9. 根据权利要求1所述的电池模组，其特征在于，压条(3)的熔点为200℃～500℃。
  10. 根据权利要求9所述的电池模组，其特征在于，压条(3)为金属压条。
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