WO2025002385A1 - 电池包 - Google Patents

电池包 Download PDF

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Publication number
WO2025002385A1
WO2025002385A1 PCT/CN2024/102489 CN2024102489W WO2025002385A1 WO 2025002385 A1 WO2025002385 A1 WO 2025002385A1 CN 2024102489 W CN2024102489 W CN 2024102489W WO 2025002385 A1 WO2025002385 A1 WO 2025002385A1
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WO
WIPO (PCT)
Prior art keywords
battery cell
explosion
battery
cavity
battery pack
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/CN2024/102489
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English (en)
French (fr)
Inventor
陈许超
秦诚硕
唐丽娟
李国兵
周月
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.)
Svolt Energy Technology Co Ltd
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Svolt Energy Technology Co Ltd
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Filing date
Publication date
Application filed by Svolt Energy Technology Co Ltd filed Critical Svolt Energy Technology Co Ltd
Publication of WO2025002385A1 publication Critical patent/WO2025002385A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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 lithium batteries, and in particular to a battery pack.
  • the existing battery pack structure not only fails to achieve thermal and electrical separation, but also has slow exhaust.
  • the purpose of the present application is to provide a battery pack to solve, to a certain extent, the technical problem that the existing battery pack structure in the prior art not only fails to achieve thermal and electrical separation but also has slow exhaust.
  • a battery pack comprising a housing, a battery cell module, a bottom guard plate and a reinforcing rib plate, wherein the housing and the bottom guard plate are arranged to form a receiving space for receiving the battery cell module;
  • the reinforcing rib plate includes at least one reinforcing convex rib, the reinforcing rib plate is in contact with the bottom guard plate, and the reinforcing convex rib protrudes toward a side facing away from the bottom guard plate, so that an exhaust passage is formed between the reinforcing convex rib and the bottom guard plate;
  • At least one row of first explosion-proof valves is arranged at the bottom of the battery module, the battery module is arranged on the reinforcing rib plate, and each reinforcing rib is arranged corresponding to a row of first explosion-proof valves;
  • the housing includes an exhaust portion, and the first explosion-proof valve is in communication with the exhaust portion via the exhaust passage.
  • the reinforcing rib plate comprises a plurality of reinforcing ribs spaced apart along a first direction, each reinforcing rib extending along a second direction, and the second direction is perpendicular to the first direction;
  • the reinforcing convex rib is provided with a vent portion, and the first explosion-proof valve is connected with the exhaust passage via the vent portion;
  • Each of the reinforcing ribs is provided with two support bars extending along the second direction, the vent is provided between the two support bars, and the battery cell module is provided on the reinforcing rib via the support bars.
  • the reinforcing rib plate further comprises a plate main body, a plurality of reinforcing ribs are connected via the plate main body, and the reinforcing rib plate is bonded to the bottom guard plate via the plate main body;
  • the battery pack also includes a sealant layer arranged between the plate body and the bottom guard plate.
  • the shell further comprises a front side beam, a rear side beam, a transverse air beam and two side beams, the rear side beam and the transverse air beam both extend along the first direction, the side beams extend along the second direction, the first ends of the two side beams are respectively connected to the two ends of the front side beam, the second ends of the two side beams are respectively connected to the two ends of the rear side beam, and the second direction is perpendicular to the first direction;
  • the air beam includes a first cavity extending along the first direction
  • the side beam includes a second cavity extending along the second direction
  • the exhaust portion is arranged on the rear side beam
  • the exhaust channel is connected to the exhaust portion via the first cavity and the second cavity in sequence.
  • the reinforcing rib further includes a connecting hole connected to the exhaust passage, the air passing cross beam cover is arranged above the connecting hole, and the exhaust passage is connected to the first cavity via the connecting hole.
  • the ventilation portion includes a plurality of ventilation holes arranged at intervals along the second direction, and the plurality of ventilation holes included in each of the reinforcing ribs correspond one-to-one to the plurality of first explosion-proof valves in a corresponding row.
  • the battery cell module includes a plurality of battery cell assemblies arranged side by side along a first direction, each of the battery cell assemblies includes a plurality of battery cells stacked along the second direction, and poles of the battery cells are arranged on end faces of the battery cells in the first direction.
  • it further includes a longitudinal beam extending along the second direction, wherein the longitudinal beam divides the accommodating space into a plurality of accommodating parts, and each accommodating part is correspondingly provided with one of the battery cell assemblies.
  • the battery cell further comprises a second explosion-proof valve, and the second explosion-proof valve is arranged on an end surface of the battery cell in the first direction;
  • the longitudinal beam comprises a third cavity and a first air hole, the third cavity extends along the second direction, the first air hole is arranged on two sides of the longitudinal beam opposite to each other in the first direction, and the second explosion-proof valve of the battery cell facing the longitudinal beam is adjacent to the first air hole.
  • the holes are set accordingly;
  • the side beam further includes a second air hole, which is arranged on the inner side of the side beam, and the second explosion-proof valve of the battery cell facing the side beam is arranged corresponding to the second air hole.
  • it further comprises a front crossbeam and a rear crossbeam both extending along the first direction, and the battery cell module is arranged between the front crossbeam and the rear crossbeam;
  • the rear cross beam further includes a fourth cavity and an exhaust hole extending along the first direction, and the second cavity and the third cavity are both connected to the exhaust portion via the fourth cavity and the exhaust hole in sequence.
  • the battery pack provided in the present application connects the first explosion-proof valve with the exhaust channel enclosed by the reinforcing rib and the bottom guard plate, so that the space enclosed by the reinforcing rib and the bottom guard plate is utilized as an independent exhaust channel.
  • the pressure relief gas can rush out of the first explosion-proof valve and be discharged into the exhaust channel.
  • the pressure relief gas discharged through the first explosion-proof valve is effectively prevented from impacting the battery cell module, thereby ensuring the electrical connection stability of the battery cell module.
  • the pressure relief gas can be directly discharged to the exhaust part through the exhaust channel, thereby effectively improving the exhaust speed of the pressure relief gas.
  • FIG1 is a schematic diagram of an exploded structure of a battery pack provided in an embodiment of the present application.
  • FIG2 is a schematic diagram of the structure of the reinforcing rib plate provided in an embodiment of the present application installed on the bottom guard plate;
  • FIG3 is a side view of FIG2
  • FIG. 5 is a schematic diagram of the structure of a battery cell module provided in an embodiment of the present application.
  • the terms “installed”, “connected”, and “connected” should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components.
  • installed should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components.
  • the battery pack according to some embodiments of the present application is described below with reference to FIGS. 1 to 5 .
  • an embodiment of the present application provides a battery pack, which includes an outer shell 100, a battery cell module 200, a bottom guard plate 300 and a reinforcing rib plate 400.
  • the outer shell 100 and the bottom guard plate 300 are arranged to form an accommodation space for accommodating the battery cell module 200.
  • the reinforcing rib plate 400 includes a plurality of reinforcing ribs 401 arranged at intervals along a first direction X.
  • the reinforcing rib plate 400 is fitted with the bottom guard plate 300.
  • the reinforcing ribs 401 protrude to the side facing away from the bottom guard plate 300, so that an exhaust channel is formed between the reinforcing ribs 401 and the bottom guard plate 300.
  • a plurality of rows of first explosion-proof valves 2011 are arranged at the bottom of the battery cell module 200.
  • the battery cell module 200 is arranged on the reinforcing rib plate 400.
  • the plurality of reinforcing ribs 401 correspond to the plurality of rows of first explosion-proof valves 2011 in a one-to-one manner.
  • the housing 100 includes an exhaust portion 601, and the first explosion-proof valve 2011 is communicated with the exhaust portion 601 via an exhaust passage.
  • the depressurized gas can rush out of the first explosion-proof valve 2011 and be discharged into the exhaust channel.
  • the depressurized gas discharged through the first explosion-proof valve 2011 impacts the battery module 200, thereby ensuring the electrical connection stability of the battery module 200; on the other hand, the depressurized gas can be directly discharged to the exhaust part 601 through the exhaust channel, thereby effectively improving the exhaust speed of the depressurized gas.
  • X in the figure shows an example of a first direction
  • Y in the figure shows an example of a second direction
  • Z in the figure shows an example of a third direction.
  • any two of the first direction X, the second direction Y, and the third direction Z are perpendicular.
  • the third direction Z may be parallel to the direction of gravity.
  • the reinforcing rib 401 extends along the second direction Y, and the reinforcing rib 401 is provided with a vent, and the first explosion-proof valve 2011 is connected to the exhaust channel via the vent.
  • Each reinforcing rib 401 is provided with two support bars extending along the second direction Y, the vent is provided between the two support bars, and the battery module 200 is provided on the reinforcing rib 401 via the support bars.
  • the first explosion-proof valve 2011 is effectively sealed from the exhaust channel by the two support bars provided on both sides of the vent, preventing the depressurized gas discharged from the first explosion-proof valve 2011 from completely entering the exhaust channel, further improving the completeness of the electric and thermal separation.
  • the ventilation portion may include a plurality of ventilation holes 4011 spaced apart along the second direction Y, and the plurality of ventilation holes 4011 included in each reinforcing rib 401 correspond one-to-one to a plurality of first explosion-proof valves 2011 in a corresponding row, so that each explosion-proof valve can be connected to the exhaust channel, thereby ensuring smooth pressure relief of each first explosion-proof valve 2011.
  • the support strips may be support foams, which can effectively prevent the pressure relief gas from entering the accommodation space due to vibration of the battery cell module 200 at the pressure relief gas release point when the pressure relief gas rushes out of the first explosion-proof valve 2011 due to the elasticity of the support foams.
  • the reinforcing rib plate 400 may further include a plate body 402, a plurality of reinforcing ribs 401 are connected via the plate body 402, and the reinforcing rib plate 400 is attached to the bottom guard plate 300 via the plate body 402.
  • the battery pack may further include a sealant layer 500 disposed between the plate body 402 and the bottom guard plate 300, thereby further improving the air tightness of the exhaust passage and preventing the depressurized gas in the exhaust passage from escaping through the gap between the plate body 402 and the bottom guard plate 300.
  • the housing 100 may further include a front side beam 602, a rear side beam 603, an air-through beam 604, and two side beams 605, wherein the rear side beam 603 and the air-through beam 604 both extend along the first direction X, and the side beam 605 extends along the second direction Y, and the first ends of the two side beams 605 are respectively connected to the two ends of the front side beam 602, and the second ends of the two side beams 605 are respectively connected to the two ends of the rear side beam 603.
  • the air-through beam 604 includes a first cavity extending along the first direction X, and the side beam 605 includes a second cavity extending along the second direction Y.
  • the exhaust portion 601 is disposed on the rear side beam 603, and the exhaust passage is sequentially connected to the exhaust portion 601 via the first cavity and the second cavity.
  • the reinforcing rib 401 further includes a connecting hole 4012 connected to the exhaust passage, the air beam 604 is covered above the connecting hole 4012 , and the exhaust passage is connected to the first cavity via the connecting hole 4012 to achieve connection between the exhaust passage and the air beam 604 .
  • the battery cell module 200 may include a plurality of battery cell assemblies 201 arranged side by side along a first direction X, each battery cell assembly 201 includes a plurality of battery cells stacked along a second direction Y, and the poles of the battery cells are arranged at the first direction X of the battery cells.
  • the pole and the first explosion-proof valve 2011 are arranged on different surfaces of the battery core, further realizing the separation of electricity and heat.
  • the battery pack may further include a longitudinal beam 900 extending along the second direction Y, and the longitudinal beam 900 divides the accommodating space into a plurality of accommodating parts, each accommodating part corresponding to a battery cell assembly 201 is provided.
  • the strength of the battery pack shell 100 is effectively improved; on the other hand, each battery cell assembly 201 is effectively separated, and the mutual interference of the battery cell assemblies 201 is effectively reduced.
  • the battery cell may further include a second explosion-proof valve 2012, which is disposed on the end face of the battery cell in the first direction X.
  • a second explosion-proof valve 2012 which is disposed on the end face of the battery cell in the first direction X.
  • the longitudinal beam 900 may include a third cavity and a first air hole 901, the third cavity extends along the second direction Y, the first air hole 901 is arranged on two sides of the longitudinal beam 900 opposite to each other in the first direction X, and the second explosion-proof valve 2012 of the battery cell facing the longitudinal beam 900 is arranged corresponding to the first air hole 901, so that the pressure relief gas of the second explosion-proof valve 2012 arranged facing the longitudinal beam 900 is directly discharged from the third cavity, thereby reducing the probability of the pressure relief gas discharged through the second explosion-proof valve 2012 impacting the electrical connection structure of the battery cell module 200.
  • the side beam 605 may also include a second air hole 6051, which is arranged on the inner side of the side beam 605, and the second explosion-proof valve 2012 of the battery cell facing the side beam 605 is arranged corresponding to the second air hole 6051.
  • the pressure relief gas of the second explosion-proof valve 2012 arranged facing the side beam 605 is directly discharged from the second cavity, thereby reducing the probability of the pressure relief gas discharged through the second explosion-proof valve 2012 impacting the electrical connection structure of the battery cell module 200.
  • the battery pack may further include a front crossbeam 700 and a rear crossbeam 800 both extending along the first direction X, and the battery cell module 200 is disposed on the front crossbeam 700 and the rear crossbeam 800.
  • the beams 800 effectively improve the anti-deformation strength of the battery pack and the setting stability of the battery cell module 200.
  • the rear cross beam 800 may further include a fourth cavity and an exhaust hole 801 extending along the first direction X, and the second cavity and the third cavity are connected to the exhaust portion 601 via the fourth cavity and the exhaust hole 801 in sequence, so that the depressurized gas is gathered to the exhaust hole 801 through the fourth cavity, and then flows to the exhaust portion 601 via the exhaust hole 801, so as to control the exhaust direction of the depressurized gas.
  • the battery pack may further include a cold plate 1000, which is covered on top of the battery cell module 200, and the cold plate 1000 is welded to the front crossbeam 700 and the rear crossbeam 800, respectively.
  • the cold plate 1000, the bottom guard plate 300, the front crossbeam 700, the rear crossbeam 800 and the two side beams 605 form a closed space, thereby ensuring the environmental stability of the above-mentioned accommodation space, and thus ensuring the running stability of the battery cell module 200; on the other hand, the cold air cooled by the cold plate 1000 flows to the entire battery pack, thereby improving the cooling efficiency of the cold plate 1000.
  • the exhaust portion may be an explosion-proof valve provided on the housing 100 .

Landscapes

  • Battery Mounting, Suspending (AREA)
  • Gas Exhaust Devices For Batteries (AREA)

Abstract

一种电池包包括外壳（100）、电芯模组（200）、底护板（300）和加强筋板（400），该外壳（100）与底护板（300）两者围设形成容纳电芯模组（200）的容纳空间。加强筋板（400）包括至少一个加强凸筋（401），加强筋板（400）与底护板（300）贴合，加强凸筋（401）向背对底护板（300）的一侧凸出，以使加强凸筋（401）与底护板（300）之间围设形成排气通道。电芯模组（200）的底部设置有至少一排第一防爆阀（2011），电芯模组（200）设置于加强筋板（400），每个所述加强凸筋（401）与一排第一防爆阀（2011）对应设置。外壳（100）包括排气部（601），第一防爆阀（2011）经由排气通道与排气部（601）连通。该电池包避免经由第一防爆阀（2011）排出的泄压气体冲击电芯模组（200），保证电芯模组（200）的电连接稳定性；泄压气体能经由排气通道直接排向排气部（601），提升泄压气体的排出速度。

Description

电池包
相关申请的交叉引用
本申请要求在2023年6月28日提交中国专利局、申请号为202321679432.0、发明名称为“电池包”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及锂电池技术领域，尤其是涉及一种电池包。
背景技术
随着新能源汽车的兴起，电池包的设计百家争鸣，电池包的安全设计已经成为当下研究的热点问题，其中最为热门的话题就是电池包热失控安全。
对此，传统的电芯防爆阀都是设置在电芯模组的顶部或侧部，而电池包顶部或侧部没有设置单独的排气通道供气体流通，电池包内大面积的气体不仅会影响电池模组的极柱，且电芯防爆阀排出的气体排到电池包外部的速度较慢。
因此，现有的电池包结构，不仅没有实现热电分离，且排气较慢。
发明内容
本申请的目的在于提供一种电池包，以在一定程度上解决现有技术中存在的现有的电池包结构，不仅没有实现热电分离，且排气较慢的技术问题。
根据本申请的第一方面提供一种电池包，包括外壳、电芯模组、底护板和加强筋板，所述外壳与所述底护板两者围设形成容纳所述电芯模组的容纳空间；
所述加强筋板包括至少一个加强凸筋，所述加强筋板与所述底护板贴合，所述加强凸筋向背对所述底护板的一侧凸出，以使得所述加强凸筋与所述底护板之间围设形成排气通道；
所述电芯模组的底部设置有至少一排第一防爆阀，所述电芯模组设置于所述加强筋板，每个所述加强凸筋与一排第一防爆阀对应设置；
所述外壳包括排气部，所述第一防爆阀经由所述排气通道与所述排气部连通。
可选地，所述加强筋板包括沿第一方向间隔设置的多个加强凸筋，每个所述加强凸筋沿第二方向延伸，所述第二方向与所述第一方向垂直；
所述加强凸筋设置有通气部，所述第一防爆阀经由所述通气部与所述排气通道连通；
每个所述加强凸筋设置有两个沿所述第二方向延伸的支撑条，所述通气部设置于所述两个支撑条之间，所述电芯模组经由所述支撑条设置于所述加强凸筋。
可选地，所述加强筋板还包括板本部，多个所述加强凸筋经由所述板本部连接，所述加强筋板经由所述板本部与所述底护板贴合；
所述电池包还包括设置于所述板本部与所述底护板两者之间的密封胶层。
可选地，所述外壳还包括前边梁、后边梁、过气横梁和两个侧边梁，所述后边梁和所述过气横梁均沿所述第一方向延伸，所述侧边梁沿第二方向延伸，所述两个侧边梁的第一端分别与所述前边梁的两端连接，所述两个侧边梁的第二端分别与所述后边梁的两端连接，所述第二方向与所述第一方向垂直；
所述过气横梁包括沿所述第一方向延伸的第一容腔，所述侧边梁包括沿第二方向延伸的第二容腔，所述排气部设置于所述后边梁，所述排气通道依次经由所述第一容腔和所述第二容腔与所述排气部连通。
可选地，所述加强凸筋还包括与所述排气通道连通的连通孔，所述过气横梁盖设于所述连通孔的上方，所述排气通道经由所述连通孔与所述第一容腔连通。
可选地，所述通气部包括沿所述第二方向间隔设置的多个通气孔，每个所述加强凸筋所包括的多个通气孔与对应排的多个所述第一防爆阀一一对应。
可选地，所述电芯模组包括沿第一方向并排设置的多个电芯组件，每一所述电芯组件包括沿所述第二方向堆叠的多个电芯，所述电芯的极柱设置于所述电芯的在所述第一方向上的端面上。
可选地，还包括沿所述第二方向延伸纵梁，所述纵梁将所述容纳空间划分为多个容纳部分，每个所述容纳部分对应设置一个所述电芯组件。
可选地，所述电芯还包括第二防爆阀，所述第二防爆阀设置于所述电芯的在所述第一方向上的端面上；
所述纵梁包括第三容腔和第一过气孔，所述第三容腔沿所述第二方向延伸，所述第一过气孔设置于所述纵梁的在所述第一方向上彼此相对的两侧，所述电芯的面对所述纵梁的第二防爆阀与所述第一过气 孔对应设置；
所述侧边梁还包括第二过气孔，所述第二过气孔设置于所述侧边梁的内侧，所述电芯的面对所述侧边梁的第二防爆阀与所述第二过气孔对应设置。
可选地，还包括均沿所述第一方向延伸的前横梁和后横梁，所述电芯模组设置于所述前横梁和所述后横梁之间；
所述后横梁还包括沿第一方向延伸的第四容腔和排气孔，所述第二容腔和所述第三容腔均依次经由所述第四容腔和排气孔与排气部连通。
与现有技术相比，本申请的有益效果为：
本申请提供的电池包，通过将第一防爆阀与加强凸筋和底护板两者围设的排气通道连通，以利用加强凸筋与底护板两者围设形成的空间充当独立的排气通道，当电芯模组内部的气压超出阈值时，泄压气体能够冲出第一防爆阀排入该排气通道，一方面，有效地避免了经由第一防爆阀排出的泄压气体冲击电芯模组，保证了电芯模组的电连接稳定性；另一方面，该泄压气体能够经由该排气通道直接排向排气部，有效地提升了泄压气体的排气速度。
为使本申请的上述目的、特征和优点能更明显易懂，下文特举较佳实施例，并配合所附附图，作详细说明如下。
附图说明
为了更清楚地说明本申请具体实施方式或现有技术中的技术方案，下面将对具体实施方式或现有技术描述中所需要使用的附图作简 单地介绍，显而易见地，下面描述中的附图是本申请的一些实施方式，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为本申请实施例提供的电池包的爆炸结构示意图；
图2为本申请实施例提供的加强筋板安装于底护板的结构示意图；
图3为图2的侧视图；
图4为图3的在A处的放大结构示意图；
图5为本申请实施例提供的电芯模组结构示意图。
附图标记：
100-外壳；200-电芯模组；201-电芯组件；2011-第一防爆阀；2012-第二防爆阀；300-底护板；400-加强筋板；401-加强凸筋；4011-通气孔；4012-连通孔；402-板本部；500-密封胶层；601-排气部；602-前边梁；603-后边梁；604-过气横梁；605-侧边梁；6051-第二过气孔；700-前横梁；800-后横梁；801-排气孔；900-纵梁；901-第一过气孔；1000-冷板；
X-第一方向；Y-第二方向；Z-第三方向。
具体实施方式
下面将结合附图对本申请的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。
通常在此处附图中描述和显示出的本申请实施例的组件可以以各种不同的配置来布置和设计。因此，以下对在附图中提供的本申请的实施例的详细描述并非旨在限制要求保护的本申请的范围，而是仅仅表示本申请的选定实施例。
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。
在本申请的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“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申请和简化描述，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申请的限制。此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。
在本申请的描述中，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申请中的具体含义。
下面参照图1至图5描述根据本申请一些实施例所述的电池包。
参见图1至图5所示，本申请的实施例提供了一种电池包，其包括外壳100、电芯模组200、底护板300和加强筋板400，该外壳100与底护板300两者围设形成容纳电芯模组200的容纳空间。加强筋板400包括多个沿第一方向X间隔设置的加强凸筋401，加强筋板400与底护板300贴合，加强凸筋401向背对底护板300的一侧凸出，以使得该加强凸筋401与底护板300之间围设形成排气通道。电芯模组200的底部设置有多排第一防爆阀2011，该电芯模组200设置于加强筋板400，该多个加强凸筋401与多排第一防爆阀2011一一对应设 置。外壳100包括排气部601，第一防爆阀2011经由排气通道与排气部601连通。
根据以上技术特征，通过将第一防爆阀2011与加强凸筋401和底护板300两者围设的排气通道连通，以利用加强凸筋401与底护板300两者围设形成的空间充当独立的排气通道，当电芯模组200内部的气压超出阈值时，泄压气体能够冲出第一防爆阀2011排入该排气通道，一方面，有效地避免了经由第一防爆阀2011排出的泄压气体冲击电芯模组200，保证了电芯模组200的电连接稳定性；另一方面，该泄压气体能够经由该排气通道直接排向排气部601，有效地提升了泄压气体的排气速度。
参见图1，图中X示出了第一方向的一种示例，图中Y示出了第二方向的一种示例，图中Z示出了第三方向的一种示例。可选地，第一方向X、第二方向Y和第三方向Z三者中的任意两者垂直。其中，当电池包处于使用状态时，该第三方向Z可以平行于重力方向。
可选地，如图1和图2所示，该加强凸筋401沿第二方向Y延伸，所述加强凸筋401设置有通气部，第一防爆阀2011经由通气部与排气通道连通。每个加强凸筋401设置有两个沿第二方向Y延伸的支撑条，通气部设置于两个支撑条之间，电芯模组200经由支撑条设置于加强凸筋401，如此，通过设置于通气部两侧的两个支撑条，有效地将第一防爆阀2011与排气通道进行密封，避免了第一防爆阀2011排出的泄压气体能够完全进入排气通道，进一步提高了电热分离的完全性。
可选地，如图1所示，通气部可以包括沿第二方向Y间隔设置的多个通气孔4011，每个加强凸筋401所包括的多个通气孔4011与对应排的多个第一防爆阀2011一一对应，如此，使得每一防爆阀均能够与排气通道连通，保证了每一第一防爆阀2011的泄压顺畅性。
可选地，上述支撑条可以是支撑泡棉，在该支撑泡棉的弹性作用下，有效地避免了泄压气体冲出第一防爆阀2011时，在泄出泄压气体处的电芯模组200因震动导致泄压气体进入上述容纳空间的现象发生。
可选地，如图4所示，加强筋板400还可以包括板本部402，多个加强凸筋401经由板本部402连接，加强筋板400经由板本部402与底护板300贴合。电池包还可以包括设置于板本部402与底护板300两者之间的密封胶层500，如此，进一步提高了排气通道的气密性，防止了排气通道内的泄压气体经由板本部402和底护板300两者之间的缝隙进行溢散。
可选地，如图1所示，外壳100还可以包括前边梁602、后边梁603、过气横梁604和两个侧边梁605，后边梁603和过气横梁604均沿所述第一方向X延伸，侧边梁605沿第二方向Y延伸，两个侧边梁605的第一端分别与前边梁602的两端连接，两个侧边梁605的第二端分别与后边梁603的两端连接。过气横梁604包括沿第一方向X延伸的第一容腔，侧边梁605包括沿第二方向Y延伸的第二容腔，排气部601设置于后边梁603，排气通道依次经由第一容腔和所述第二容腔与排气部601连通。
可选地，如图2所示，所述加强凸筋401还包括与所述排气通道连通的连通孔4012，上述过气横梁604盖设于连通孔4012的上方，排气通道经由连通孔4012与第一容腔连通，以实现排气通道与过气横梁604的连通。
在实施例中，如图1和图5所示，该电芯模组200可以包括沿第一方向X并排设置的多个电芯组件201，每一电芯组件201包括沿第二方向Y堆叠的多个电芯，该电芯的极柱设置于电芯的在第一方向X 上的端面上，如此，极柱与第一防爆阀2011设置于电芯的不同的表面上，进一步实现了电热的分离。
可选地，如图1所示，电池包还可以包括沿第二方向Y延伸纵梁900，纵梁900将容纳空间划分为多个容纳部分，每个容纳部分对应设置一个所述电芯组件201，一方面，有效地提高了电池包的外壳100强度；另一方面，有效地将各电芯组件201进行分隔，有效降低了电芯组件201相互的干扰。
在实施例中，如图1和图5所示，该电芯还可以包括第二防爆阀2012，该第二防爆阀2012设置于电芯的在第一方向X上的端面，如此，有效的增加了电池的泄压出口，进一步保证了电芯的安全性，有效降低了电芯泄压不及时导致发生变形的几率。
可选地，如图1所述，上述纵梁900可以包括第三容腔和第一过气孔901，第三容腔沿第二方向Y延伸，第一过气孔901设置于所述纵梁900的在第一方向X上彼此相对的两侧，电芯的面对纵梁900的第二防爆阀2012与第一过气孔901对应设置，如此，设置于面对纵梁900的第二防爆阀2012的泄压气体直接有该第三容腔排出，进而减少了经由第二防爆阀2012排出的泄压气体冲击电芯模组200的电连接结构的几率。
可选地，如图1所示，侧边梁605还可以包括第二过气孔6051，该第二过气孔6051设置于侧边梁605的内侧，电芯的面对侧边梁605的第二防爆阀2012与第二过气孔6051对应设置，如此，设置于面对侧边梁605的第二防爆阀2012的泄压气体直接有该第二容腔排出，进而减少了经由第二防爆阀2012排出的泄压气体冲击电芯模组200的电连接结构的几率。
可选地，如图1所述，电池包还可以包括均沿第一方向X延伸的前横梁700和后横梁800，电芯模组200设置于前横梁700和后横 梁800之间，有效地提高了电池包的抗变形强度和电芯模组200的设置稳定性。
可选地，如图1所示，后横梁800还可以包括沿第一方向X延伸的第四容腔和排气孔801，第二容腔和第三容腔均依次经由第四容腔和排气孔801与排气部601连通，如此，泄压气体通过第四容腔汇聚至排气孔801后，再经由排气孔801流向排气部601，以便于控制泄压气体的排出方向。
可选地，如图1所示，电池包还可以包括冷板1000，该冷板1000盖设于电芯模组200的上方，冷板1000分别与前横梁700和后横梁800焊接，一方面，使得冷板1000、底护板300、前横梁700、后横梁800和两个侧边梁605六者形成密闭空间，进而保证了上述容纳空间的环境稳定性，进而保证了电芯模组200的运行平稳性；另一方面，便于冷板1000冷却的冷空气流向整个电池包，提高了冷板1000的冷却效率。
可选地，该排气部可以是设置于外壳100上的防爆阀。
最后应说明的是：以上各实施例仅用以说明本申请的技术方案，而非对其限制；尽管参照前述各实施例对本申请进行了详细的说明，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申请各实施例技术方案的范围。

Claims (10)

  1. 一种电池包，其特征在于，包括外壳、电芯模组、底护板和加强筋板，所述外壳与所述底护板两者围设形成容纳所述电芯模组的容纳空间；
    所述加强筋板包括至少一个加强凸筋，所述加强筋板与所述底护板贴合，所述加强凸筋向背对所述底护板的一侧凸出，以使得所述加强凸筋与所述底护板之间围设形成排气通道；
    所述电芯模组的底部设置有至少一排第一防爆阀，所述电芯模组设置于所述加强筋板，每个所述加强凸筋与一排第一防爆阀对应设置；
    所述外壳包括排气部，所述第一防爆阀经由所述排气通道与所述排气部连通。
  2. 根据权利要求1所述的电池包，其特征在于，
    所述加强筋板包括沿第一方向间隔设置的多个加强凸筋，
    每个所述加强凸筋沿第二方向延伸，所述第二方向与所述第一方向垂直；
    所述加强凸筋设置有通气部，所述第一防爆阀经由所述通气部与所述排气通道连通；
    每个所述加强凸筋设置有两个沿所述第二方向延伸的支撑条，所述通气部设置于两个所述支撑条之间，所述电芯模组经由所述支撑条设置于所述加强凸筋。
  3. 根据权利要求1所述的电池包，其特征在于，所述加强筋板还包括板本部，多个所述加强凸筋经由所述板本部连接，所述加强筋板经由所述板本部与所述底护板贴合；
    所述电池包还包括设置于所述板本部与所述底护板两者之间的密封胶层。
  4. 根据权利要求2所述的电池包，其特征在于，所述外壳还包括前边梁、后边梁、过气横梁和两个侧边梁，所述后边梁和所述过气横梁均沿所述第一方向延伸，所述侧边梁沿第二方向延伸，所述两个侧边梁的第一端分别与所述前边梁的两端连接，所述两个侧边梁的第二端分别与所述后边梁的两端连接，所述第二方向与所述第一方向垂直；
    所述过气横梁包括沿所述第一方向延伸的第一容腔，所述侧边梁包括沿第二方向延伸的第二容腔，所述排气部设置于所述后边梁，所述排气通道依次经由所述第一容腔和所述第二容腔与所述排气部连通。
  5. 根据权利要求4所述的电池包，其特征在于，所述加强凸筋还包括与所述排气通道连通的连通孔，所述过气横梁盖设于所述连通孔的上方，所述排气通道经由所述连通孔与所述第一容腔连通。
  6. 根据权利要求2所述的电池包，其特征在于，
    所述通气部包括沿所述第二方向间隔设置的多个通气孔，每个所述加强凸筋所包括的多个通气孔与对应排的多个所述第一防爆阀一一对应。
  7. 根据权利要求4所述的电池包，其特征在于，所述电芯模组包括沿第一方向并排设置的多个电芯组件，每一所述电芯组件包括沿所述第二方向堆叠的多个电芯，所述电芯的极柱设置于所述电芯的在所述第一方向上的端面上。
  8. 根据权利要求7所述的电池包，其特征在于，还包括沿所述第二方向延伸纵梁，所述纵梁将所述容纳空间划分为多个容纳部分，每个所述容纳部分对应设置一个所述电芯组件。
  9. 根据权利要求8所述的电池包，其特征在于，
    所述电芯还包括第二防爆阀，所述第二防爆阀设置于所述电芯的在所述第一方向上的端面上；
    所述纵梁包括第三容腔和第一过气孔，所述第三容腔沿所述第二方向延伸，所述第一过气孔设置于所述纵梁的在所述第一方向上彼此相对的两侧，所述电芯的面对所述纵梁的第二防爆阀与所述第一过气孔对应设置；
    所述侧边梁还包括第二过气孔，所述第二过气孔设置于所述侧边梁的内侧，所述电芯的面对所述侧边梁的第二防爆阀与所述第二过气孔对应设置。
  10. 根据权利要求9所述的电池包，其特征在于，还包括均沿所述第一方向延伸的前横梁和后横梁，所述电芯模组设置于所述前横梁和所述后横梁之间；
    所述后横梁还包括沿第一方向延伸的第四容腔和排气孔，所述第二容腔和所述第三容腔均依次经由所述第四容腔和排气孔与排气部连通。
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