WO2019148637A1 - 电池模组 - Google Patents

电池模组 Download PDF

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Publication number
WO2019148637A1
WO2019148637A1 PCT/CN2018/081585 CN2018081585W WO2019148637A1 WO 2019148637 A1 WO2019148637 A1 WO 2019148637A1 CN 2018081585 W CN2018081585 W CN 2018081585W WO 2019148637 A1 WO2019148637 A1 WO 2019148637A1
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WO
WIPO (PCT)
Prior art keywords
battery module
base
guard
cover
battery
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Application number
PCT/CN2018/081585
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English (en)
French (fr)
Inventor
李中泽
陈亮美
刘杨
章华
秦峰
马林
Original Assignee
宁德时代新能源科技股份有限公司
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Publication of WO2019148637A1 publication Critical patent/WO2019148637A1/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
    • 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
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular 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
    • H01M10/04—Construction or manufacture in general
    • 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
    • H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present application relates to the field of energy storage devices, and in particular, to a battery module.
  • IP INGRESS PROTECTION
  • the application provides a battery module capable of meeting the IP protection level of the battery module.
  • the application provides a battery module comprising:
  • An output pole assembly including a shield portion and a connection terminal connected to the external conductive terminal;
  • the battery is disposed in the module housing
  • the output pole assembly is disposed in the module housing
  • the protective portion covers the connection terminal.
  • the guard portion includes a base and a cover, and the base and the cover cover form an accommodation space for accommodating the connection terminal.
  • the module housing includes connected end plates and side plates, and the shielding portion is coupled to the end plates.
  • the end plate is provided with a groove, and the base comprises a protrusion, and the protrusion is inserted into the groove.
  • the projection includes a tapered end, and the area of the cross section of the tapered end gradually decreases in a direction in which the groove is inserted.
  • the base and the cover have engaging portions that are engaged with each other, and the two are engaged and fixed by the engaging portion.
  • the base includes a first side guard and a bottom guard
  • the cover includes a second side guard and a top guard, the first side guard being opposite to the second side guard
  • the top guard portion is disposed opposite to the bottom guard portion to form the receiving space.
  • the guard portion further includes an internally threaded connector that is embedded in the base, and the mounting bolt is screwed into the internally threaded connector to secure the connecting terminal and the external conductive terminal.
  • the base and the cover are both integrally formed structures.
  • the present application provides a battery module, wherein the battery module includes a shielding portion that encloses the connection terminal in its own receiving space, thereby preventing external electrical conductors that are not expected to make electrical contact with the connecting terminal At the same time, the protection part also increases the creepage distance and clearance of the external conductor and the connection terminal, which satisfies the requirements of the IP protection level of the battery module.
  • FIG. 1 is a schematic diagram of a partial structure of a battery module according to an embodiment of the present application.
  • FIG. 2 is an exploded view of a partial structure of a battery module according to an embodiment of the present application
  • FIG. 3 is a schematic diagram of a protection portion provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a base provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of another perspective view of a base provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a cover provided by an embodiment of the present application.
  • the present application provides a battery module 100 that can be used as a power source for an electric device (eg, an electric car).
  • an electric device eg, an electric car.
  • the battery module 100 includes a battery 1, an output pole assembly 2, and a module housing 3.
  • the battery 1 may include a plurality of battery cells or battery packs connected in parallel or in series, and are regularly arranged in the module housing 30.
  • the module housing 3 includes a bottom plate (not shown), a pair of side plates 30, a pair of end plates 32, and an upper cover (not shown), the pair of side plates 30 being opposite It is provided that a pair of end plates 32 are oppositely disposed, and the side plates 30 and the end plates 32 are sequentially connected to form a rectangular receiving space, and the bottom plate and the upper cover are oppositely disposed to close the opening of the rectangular receiving space.
  • the output pole assembly 2 can be disposed on the module housing 3, an embodiment, for example, the output pole assembly 2 is disposed on the end plate 32.
  • the output pole assembly 2 is generally set to two groups, one set as the total positive pole of the battery module 100, the other set as the total negative pole of the battery module 100, and the two sets of output pole assemblies 2 are respectively connected to the battery 1 and the external conductive terminals, The electric energy in the battery 1 is output.
  • the module housing 30 may further include a pair of inner plates 34 respectively connected to the two end plates 32.
  • the inner plate 34 is disposed on the inner side of the end plate 32, two sets.
  • the output pole assemblies 2 can be disposed on the inner panel 34, respectively.
  • the output pole assembly 2 includes an output pole post 20 connected to the battery 1 and a connection terminal 22 connected to the external conductive terminal.
  • the output pole post 20 is connected to the battery 1, the connection terminal 22 is connected to the external conductive terminal, and the inner panel 34 is disposed.
  • the battery module 100 provided by the present application further includes a protection portion 4, and the protection portion 4 covers the connection terminal 22 to prevent undesired electrical contact therewith.
  • the external conductor is in contact with the connection terminal 22, and at the same time, the protection portion 4 also increases the creepage distance and the clearance of the external conductor and the connection terminal 22, satisfying the requirement of the IP protection level of the battery module 100.
  • the guard portion 4 can take a variety of embodiments.
  • the guard portion 4 includes a base 42 and a cover 44 that covers the cover 44 to form a receiving space.
  • the guard portion 4 is composed of two parts, and the structure of the former is relatively simple and the assembly efficiency is high as compared with the case where the guard portion 4 is composed of three or more parts.
  • the base 42 includes a first side guard 422 and a bottom guard 424 , wherein the bottom guard 424 and the first side guard 422 are both attached to the battery 1 and the bottom
  • the guard portion 424 and the first side guard portion 422 are vertically connected.
  • the cover 44 includes a second side guard 442 and a top guard 444.
  • the second side guard 442 and the top guard 444 are vertically connected.
  • the first side guard 422 is The second side guards 442 are oppositely disposed, and the top guards 444 are disposed opposite to the bottom guards 424, and the four together define the accommodation space.
  • the cover 44 can be snapped onto the base 42 in the vertical direction (Y direction in FIG. 3), and the installation can be completed in one step, and the installation method is simple. The installation is difficult.
  • the shield portion 4 is not limited to the structure shown in FIGS. 4 to 6, and in other embodiments, the structure of the shield portion 4 depends on the structure of the connection terminal 22 and the difference in the external space. Can be different.
  • the base 42 may be disposed to be connected to the module housing 3, so that the installation protection portion 4 can be relatively fixed to the module housing 3 to ensure the position of the protection portion 4. Accuracy to avoid the falling of the protective portion 4 due to vibration.
  • the module housing 3 is provided with a groove which serves as a weight reducing groove on the one hand and a base 42 on the other hand.
  • the base 42 includes a protrusion. 426, the protrusion 426 protrudes downward from the bottom guard portion 424, and the protrusion 426 is inserted into the groove to achieve relative fixing of the base 42 and the module housing 3.
  • the mating structure saves the use of the connector and is installed. And easy to disassemble. More specifically, the recess is formed on the end plate 32, and the shield portion 4 is coupled to the end plate 32.
  • the protrusion 426 includes a tapered end 426a, and the area of the cross section of the tapered end 426a is gradually reduced in the direction of the insertion groove, so that the protrusion 426 can be firstly small The end is inserted into the recess to avoid interference of the projection 426 with the peripheral wall of the recess during insertion.
  • the base 42 and the cover 44 can be connected by various means, such as bonding or bolting.
  • the base 42 and the cover 44 are respectively provided with engaging portions that cooperate with each other, and the two are engaged by the engaging portion.
  • the fixing and the fixing method are more convenient than the bonding and bolting, and the assembly efficiency is higher.
  • the base 42 further includes a claw 422a.
  • the claw 422a is disposed on the first side guard 422.
  • the cover 44 includes a card hole 446a, and the top guard 444 is provided with an extension extending toward the first side guard 422.
  • the extending portion 446 is provided with a hole 446a, and the claw 422a is engaged with the hole 446a.
  • the protective portion 4 further includes a female screw connector 428, the female screw connector 428 is embedded in the base 42, and more specifically, the female screw connector 428 is embedded At the first side guard 422, the mounting bolts are threaded into the internally threaded connection 428 to secure the connection terminal 22 and the external conductive terminals.
  • the internally threaded connecting piece 428 By inserting the internally threaded connecting piece 428, since the embedded internal threaded connecting piece 428 is integrally molded into the first side guard 422, on the one hand, the external space occupied by the internally threaded connecting piece 428 can be saved, on the other hand, The degree of freedom of the threaded connection 428 is almost zero, the connection is more reliable, and the connection stability is higher.
  • the base 42 and the cover 44 are integrally formed, and the two are integrally formed by an injection molding process, which is convenient to process and has good processing technology.

Abstract

本申请涉及电池模组及电池包。电池模组包括电池；输出极组件，所述输出极组件包括防护部分和与外部导电端子连接的连接端子；和模组外壳，所述电池设置于所述模组外壳内，所述输出极组件设置于所述模组外壳，其中，所述防护部分包覆所述连接端子。防护组件的设置增加了外部导电体与连接端子的爬电距离和电气间隙，满足了电池模组的IP防护等级的要求。

Description

电池模组 技术领域
本申请涉及储能器件技术领域，尤其涉及一种电池模组。
背景技术
在设计电池模组的输出极高压防护装置时，需要考虑高压输出极的零部件相对于电池模组级别的电平台或导电部件之间的爬电距离和电气间隙，以及电池模组之间的高压零部件连接后的IP(INGRESS PROTECTION)防护等级的要求。
发明内容
本申请提供了一种电池模组，能够满足电池模组的IP防护等级的要求。
本申请提供了一种电池模组，包括：
电池；
输出极组件，所述输出极组件包括防护部分和与外部导电端子连接的连接端子；和
模组外壳，所述电池设置于所述模组外壳内，所述输出极组件设置于所述模组外壳，
其中，所述防护部分包覆所述连接端子。
可选地，所述防护部分包括底座和盖，所述底座与所述盖盖合形成容纳所述连接端子的容纳空间。
可选地，所述模组外壳包括相连接的端板和侧板，所述防护部分与所述端板连接。
可选地，所述端板开设有凹槽，所述底座包括凸起，所述凸起插置于所述凹槽内。
可选地，所述凸起包括锥形端，在插入所述凹槽的方向上，所述锥形 端的横截面的面积逐渐减小。
可选地，所述底座与所述盖具有相互配合的卡合部，两者通过所述卡合部卡接固定。
可选地，所述底座包括第一侧防护部和底防护部，所述盖包括第二侧防护部和顶防护部，所述第一侧防护部与所述第二侧防护部相对设置，所述顶防护部与所述底防护部相对设置，以形成所述容纳空间。
可选地，防护部分还包括内螺纹连接件，所述内螺纹连接件嵌设于所述底座，安装螺栓旋入所述内螺纹连接件以紧固所述连接端子与外部导电端子。
可选地，所述底座与所述盖均为一体成型结构。
本申请提供的技术方案可以达到以下有益效果：
本申请提供了一种电池模组，其中，电池模组包括防护部分，防护部分将连接端子包覆在自身的容纳空间内，由此防止不希望与其发生电接触的外部导电体与连接端子接触，同时，防护部分还增加了外部导电体与连接端子的爬电距离和电气间隙，满足了电池模组的IP防护等级的要求。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性的，并不能限制本申请。
附图说明
图1为本申请实施例提供的电池模组的部分结构的示意图；
图2为本申请实施例提供的电池模组的部分结构的分解视图；
图3为本申请实施例提供的防护部分的示意图；
图4为本申请实施例提供的底座的示意图；
图5为本申请实施例提供的底座的另一个视角的示意图；
图6为本申请实施例提供的盖的示意图。
附图标记：
100-电池模组；
1-电池；
2-输出极组件；
20-输出极极柱；
22-连接端子；
3-模组外壳；
30-侧板；
32-端板；
34-内板；
34a-通孔；
4-防护部分；
42-底座；
422-第一侧防护部；
422a-卡爪；
424-底防护部；
426-凸起；
426a-锥形端；
428-内螺纹连接件；
44-盖；
442-第二侧防护部；
444-顶防护部；
446-延伸部；
446a-卡孔。
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本申请的实施例，并与说明书一起用于解释本申请的原理。
具体实施方式
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。
需要注意的是，本申请实施例所描述的“上”、“下”、“左”、“右”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”。
如图1和图2所示，本申请提供了一种电池模组100，电池模组100 可以作为电动装置(例如，电动汽车)的电源使用。
电池模组100包括电池1、输出极组件2以及模组外壳3。其中，电池1可以包括多个并联或串联的电池单体或电池组，且规则地排列在模组外壳30内。
根据一个示例性的实施例，模组外壳3包括底板(图中未示出)、一对侧板30、一对端板32以及上盖(图中未示出)，一对侧板30相对设置，一对端板32相对设置，侧板30和端板32依次连接形成矩形容纳空间，底板和上盖相对设置，以封闭矩形容纳空间的开口。
输出极组件2可以设置于模组外壳3，一种实施例，例如，输出极组件2设置于端板32上。输出极组件2通常设置为两组，一组作为电池模组100的总正极，另一组作为电池模组100的总负极，两组输出极组件2分别与电池1和外部导电端子连接，以供电池1内的电能输出。
在一种可选的实施例中，如图1所示，模组外壳30还可以包括分别与两端板32连接的一对内板34，内板34设置于端板32的内侧，两组输出极组件2可以分别设置于内板34。
输出极组件2包括与电池1连接的输出极极柱20和与外部导电端子连接的连接端子22，输出极极柱20与电池1连接，连接端子22与外部导电端子连接，内板34上设置有通孔34a，输出极极柱20穿过通孔34a与连接端子22连接。
如图3所示，为了满足电池模组100的IP防护等级的要求，本申请提供的电池模组100还包括防护部分4，防护部分4包覆连接端子22，以防止不希望与其发生电接触的外部导电体与连接端子22接触，同时，防护部分4还增加了外部导电体与连接端子22的爬电距离和电气间隙，满足了电池模组100的IP防护等级的要求。
防护部分4可以采用多种实施方式，一种实施例中，如图3所示，防护部分4包括底座42和盖44，底座42与盖44盖合形成容纳空间。
在图3所示的实施例中，防护部分4由两部分组成，相比防护部分4由三部分或更多部分组成而言，前者的结构相对简单，装配效率高。
具体地，如图4至图6所示，底座42包括第一侧防护部422和底防护部424，其中，底防护部424和第一侧防护部422均与电池1贴合，并 且，底防护部424和第一侧防护部422垂直相接。
盖44包括第二侧防护部442和顶防护部444，其中，第二侧防护部442和顶防护部444垂直相接，当底座42与盖44盖合连接后，第一侧防护部422与第二侧防护部442相对设置，顶防护部444与底防护部424相对设置，四者共同围成该容纳空间。
在上述的防护部分4的实施方案中，在装配时，只需将盖44沿竖直方向(图3中的Y方向)扣合在底座42上即可，一步即可完成安装，安装方式简单，安装难度低。
但是，需要说明的是，防护部分4不仅限于图4至图6中所示出的结构，在其它一些实施例中，根据连接端子22的结构的不同以及外部空间的不同，防护部分4的结构可以不同。
进一步，为了保证防护部分4与电池1连接的可靠性，还可以设置底座42与模组外壳3连接，这样，安装防护部分4可以与模组外壳3保持相对固定，以保证防护部分4位置的准确性，避免由于振动造成防护部分4脱落。
一种实施例中，请继续参考图1和图2，模组外壳3开设有凹槽，该凹槽一方面用作减重槽，另一方面用于与底座42配合，底座42包括凸起426，凸起426从底防护部424向下凸出，凸起426插置于凹槽内，以实现底座42与模组外壳3的相对固定，该配合结构节省了连接件的使用，且安装和拆卸较为方便。更确切的是，凹槽开设于端板32上，防护部分4连接于端板32。
进一步，为了降低安装难度，该凸起426包括锥形端426a，在插入凹槽的方向上，该锥形端426a的横截面的面积逐渐减小，这样设置后，凸起426可以首先由小端插入凹槽内，以此避免插入时凸起426与凹槽的外围壁发生干涉。
可选择的，底座42和盖44可以通过多种方式连接，例如粘接或螺栓连接，本实施例中，底座42和盖44分别设置有相互配合的卡合部，两者通过卡合部卡合固定，卡合固定的方式相比粘接和螺栓连接更加方便，装配效率更高。
具体地，底座42还包括卡爪422a，卡爪422a设置于第一侧防护部422 上，相应的，盖44包括卡孔446a，顶防护部444设置有朝向第一侧防护部422延伸的延伸部446，该延伸部446上设置有卡孔446a，卡爪422a卡接于卡孔446a内。
此外，为了保证连接端子22与其它导电体连接的可靠性，防护部分4还包括内螺纹连接件428，内螺纹连接件428嵌设于底座42，更确切的是，内螺纹连接件428嵌设于第一侧防护部422，安装螺栓旋入内螺纹连接件428以紧固连接端子22与外部导电端子。
采用嵌装内螺纹连接件428的方式，由于嵌装的内螺纹连接件428一体注塑在第一侧防护部422内，一方面可以节省内螺纹连接件428占用的外部空间，另一方面，内螺纹连接件428的自由度几乎为零，连接时更加可靠，连接稳定性更高。
可选择的，底座42和盖44均采用一体成型结构，两者采用注塑工艺一体加工成型，加工方便，加工工艺性好。
以上所述仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (9)

  1. 一种电池模组，其特征在于，包括：
    电池；
    输出极组件，所述输出极组件包括防护部分和与外部导电端子连接的连接端子；和
    模组外壳，所述电池设置于所述模组外壳内，所述输出极组件设置于所述模组外壳，
    其中，所述防护部分包覆所述连接端子。
  2. 根据权利要求1所述的电池模组，其特征在于，所述防护部分包括底座和盖，所述底座与所述盖盖合形成容纳所述连接端子的容纳空间。
  3. 根据权利要求2所述的电池模组，其特征在于，所述模组外壳包括相连接的端板和侧板，所述防护部分与所述端板连接。
  4. 根据权利要求3所述的电池模组，其特征在于，所述端板开设有凹槽，所述底座包括凸起，所述凸起插置于所述凹槽内。
  5. 根据权利要求4所述的电池模组，其特征在于，所述凸起包括锥形端，在插入所述凹槽的方向上，所述锥形端的横截面的面积逐渐减小。
  6. 根据权利要求2所述的电池模组，其特征在于，所述底座与所述盖具有相互配合的卡合部，两者通过所述卡合部卡接固定。
  7. 根据权利要求2所述的电池模组，其特征在于，所述底座包括第一侧防护部和底防护部，所述盖包括第二侧防护部和顶防护部，所述第一侧防护部与所述第二侧防护部相对设置，所述顶防护部与所述底防护部相对设置，以形成所述容纳空间。
  8. 根据权利要求2所述的电池模组，其特征在于，防护部分还包括内螺纹连接件，所述内螺纹连接件嵌设于所述底座，安装螺栓旋入所述内螺纹连接件以紧固所述连接端子与外部导电端子。
  9. 根据权利要求2-8任一项所述的电池模组，其特征在于，所述底座与所述盖均为一体成型结构。
PCT/CN2018/081585 2018-01-31 2018-04-02 电池模组 WO2019148637A1 (zh)

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CN209104222U (zh) 2018-12-23 2019-07-12 宁德时代新能源科技股份有限公司 输出极组件及电池模组
CN111834560B (zh) * 2019-04-15 2021-12-07 宁德时代新能源科技股份有限公司 一种电池模组
CN214589171U (zh) * 2021-04-09 2021-11-02 宁德时代新能源科技股份有限公司 电池及用电装置

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CN203631621U (zh) * 2013-12-05 2014-06-04 宁德时代新能源科技有限公司 电池模组
CN206774619U (zh) * 2017-05-27 2017-12-19 先进储能材料国家工程研究中心有限责任公司 电池包引出端子组件

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CN206774619U (zh) * 2017-05-27 2017-12-19 先进储能材料国家工程研究中心有限责任公司 电池包引出端子组件

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