WO2020211617A1 - 一种电池模组及电池包 - Google Patents

一种电池模组及电池包 Download PDF

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Publication number
WO2020211617A1
WO2020211617A1 PCT/CN2020/081738 CN2020081738W WO2020211617A1 WO 2020211617 A1 WO2020211617 A1 WO 2020211617A1 CN 2020081738 W CN2020081738 W CN 2020081738W WO 2020211617 A1 WO2020211617 A1 WO 2020211617A1
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WO
WIPO (PCT)
Prior art keywords
battery
clamping
plate
battery module
arrangement structure
Prior art date
Application number
PCT/CN2020/081738
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English (en)
French (fr)
Inventor
侯羽佳
游书兵
姚己华
Original Assignee
宁德时代新能源科技股份有限公司
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Publication of WO2020211617A1 publication Critical patent/WO2020211617A1/zh

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/04—Construction or manufacture in general
    • H01M10/0481—Compression means other than compression means for stacks of electrodes and separators
    • 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
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane

Definitions

  • This application relates to the technical field of energy storage devices, in particular to a battery module and a battery pack.
  • the power battery of the vehicle includes a plurality of battery modules and a box body.
  • the battery modules are located in the box body, and each battery module includes a plurality of batteries.
  • the plurality of batteries are stacked on each other, and each battery has two ends along the length direction.
  • the end plates are provided with two side plates on both sides of each battery in the width direction, and the end plates are fixedly connected with the side plates to fix each battery and form a battery module.
  • the end plate and the side plate occupy a larger space and have a larger weight, resulting in a lower space utilization rate and a lower energy density of the battery module and the power battery.
  • the embodiments of the present application provide a battery module and a battery pack to solve the problem of the large volume and heavy weight of the end plate and side plate of the battery module in the prior art.
  • An embodiment of the present application provides a battery module, the battery module includes:
  • the battery cell arrangement structure includes a plurality of battery cells stacked along the length direction, and along the length direction, the battery cell arrangement structure has opposite ends disposed, along the width direction, the battery cells are arranged
  • the structure has two opposite sides;
  • a connecting member, the battery module includes at least two connecting members spaced apart from each other, and the connecting member includes a first clamping portion and a second clamping portion;
  • At least two of the first clamping portions are respectively located at both ends of the battery cell arrangement structure along the length direction, and the first clamping portions are connected to the two ends respectively. Part of the connection
  • each of the connecting members at least two of the second clamping portions are respectively located on both sides of the battery cell arrangement structure in the width direction, and the second clamping portions are respectively connected to a part of the two side portions .
  • the connecting member includes a first clamping plate and a second clamping plate, the first clamping plate and the second clamping plate are perpendicular to each other, and the first clamping plate is The first clamping portion and the second clamping plate are the second clamping portion;
  • the area of the first clamping plate is smaller than the area of the end portion, and the area of the second clamping plate is smaller than the area of the side portion.
  • it further includes at least one strap, the strap surrounding the battery cell arrangement structure and the connecting member;
  • the connecting member is provided with a groove, and along the height direction, a part of the strap is located in the groove.
  • the battery module further includes at least two insulating parts, the insulating parts being located between the connecting part and the battery cell arrangement structure.
  • the insulating member includes a first insulating plate and a second insulating plate, the first insulating plate covers at least the first clamping plate, and the second insulating plate covers at least the second insulating plate. Clamping board.
  • the insulating component further includes a third insulating plate and a fourth insulating plate;
  • the third insulating plate is connected to the top of the first insulating plate and the second insulating plate, and the third insulating plate abuts against the top of the battery cell arrangement structure;
  • the fourth insulating plate is connected to the bottom of the first insulating plate and the second insulating plate, and the fourth insulating plate abuts against the bottom of the battery cell arrangement structure.
  • the connecting member further includes a first connecting portion for connecting with the adjacent battery module.
  • an embodiment of the present application also provides a battery pack, which includes:
  • a plurality of battery modules located in the inner cavity
  • the battery module is the above-mentioned battery module.
  • the connecting component includes a first connecting portion, and the first connecting portion includes a first connecting plate and/or a second connecting plate;
  • the connecting component further includes a second connecting portion, the second connecting portion being fixed to the bottom of the first clamping portion and the second clamping portion, and/or;
  • the second connecting portion is fixed to the top of the first clamping portion and the second clamping portion.
  • both ends of the battery cell arrangement structure are fixedly connected by at least two first clamping parts, and along the width direction, both sides of the battery cell arrangement structure are fixed by at least two second clamping parts Connection, so that the battery cells are connected into one body along the length direction and the width direction. Therefore, the first clamping part and the second clamping part replace the existing end plate and the side plate in the battery cell assembly process of the present application, and compared with the end plate and the side plate, the first clamping part and the second clamping part The volume and weight of the two clamping parts are small, so that while the battery cells are grouped, the energy density of the battery module and the battery pack can be improved, and the space utilization rate can be improved.
  • FIG. 1 is a schematic structural diagram of a battery module provided by this application in a first specific embodiment
  • Figure 2 is an exploded view of Figure 1;
  • Fig. 3 is a schematic structural diagram of the connecting component in Fig. 2 in a specific embodiment
  • FIG. 4 is a schematic diagram of the structure of the insulating part in FIG. 2;
  • FIG. 5 is a top view of the battery module provided by this application in a second specific embodiment
  • Figure 6 is a partial enlarged view of part I in Figure 5;
  • FIG. 7 is a top view of the battery module provided by this application in a third specific embodiment
  • Figure 8 is a partial enlarged view of part II in Figure 7;
  • FIG. 9 is a schematic structural diagram of the battery modules in FIG. 1 connected along the length direction L;
  • FIG. 10 is a schematic diagram of the structure of the battery modules in FIG. 5 connected along the width direction W;
  • Figure 11 is a partial enlarged view of part III in Figure 10;
  • FIG. 12 is a schematic structural diagram of the battery modules in FIG. 7 connected along the length direction L and the width direction W;
  • Fig. 13 is a partial enlarged view of part IV in Fig. 12.
  • Figure 1 is a structural diagram of the battery module provided by this application in the first specific embodiment
  • Figure 2 is an exploded view of Figure 1
  • FIG. 4 is a schematic diagram of the structure of the insulating component in FIG. 2
  • FIG. 5 is a top view of the battery module provided by this application in a second specific embodiment
  • FIG. 6 is I in FIG.
  • Figure 7 is a top view of the battery module provided by this application in a third specific embodiment
  • Figure 8 is a partial enlarged view of part II in Figure 7
  • Figure 9 is the battery module in Figure 1
  • Figure 10 is a schematic diagram of the battery module connected in the width direction W in Figure 5
  • Figure 11 is a partial enlarged view of part III in Figure 10
  • Figure 12 is the battery model in Figure 7
  • the group is connected along the length direction L and the width direction W
  • Fig. 13 is a partial enlarged view of part IV in Fig. 12.
  • the embodiment of the present application provides a battery pack.
  • the battery pack includes a box body and a plurality of battery modules 1 located in the inner cavity of the box.
  • the plurality of battery modules 1 can be Stacked in any of three directions: the length direction L, the width direction W, and the height direction H.
  • the battery module 1 in FIG. 9 is stacked along the length direction L
  • the battery module 1 in FIG. 10 is stacked along the width direction W
  • the battery modules 1 in FIG. 12 are stacked along the length direction L and the width direction W.
  • the box of the battery pack is used to install each battery module 1, and can also be used to isolate the battery module 1 from the external environment, playing a role of waterproof and dustproof.
  • the battery module 1 includes a battery cell arrangement structure 11
  • the battery cell arrangement structure 11 includes a length direction L (defining the stacking direction of the battery cells 111 is the length of the battery cell arrangement structure 11 Direction L)
  • the battery cell arrangement structure 11 may be connected by adhesive.
  • the battery cell arrangement structure 11 has opposite ends, a first end 112 and a second end 113, respectively, the first end 112 and the second end 113 are composed of batteries
  • the end face of the unit 111 is composed of; along the width direction W, the battery cell arrangement structure 11 has two opposite sides, namely a first side 114 and a second side 115, the first side 114 and the second side 115 is composed of the sides of each battery unit 111.
  • the battery module 1 further includes at least two connecting members 12 spaced apart from each other.
  • the connecting member 12 includes a first clamping portion 121 and a second clamping portion 122.
  • the first clamping portions 121 are located at both ends of the battery cell arrangement structure 11 along the length direction L, that is, at least two first clamping portions 121 are separately provided on the two ends of the battery cell arrangement structure 11 along the length direction L, and are connected to the two ends That is, at least one first clamping portion 121 corresponds to the first end 112 and is fixedly connected to a portion of the first end 112, at least one first clamping portion 121 corresponds to the second end 113, And is fixedly connected with a part of the second end 113.
  • each connecting member 12 at least two second clamping portions 122 are located on both sides of the battery cell arrangement structure 11 along the width direction W, that is, at least two second clamping portions 122 are separately provided on the battery cell arrangement structure 11 along the width
  • the two sides of the direction W are fixedly connected to a part of the two sides, that is, at least one second clamping part 122 corresponds to the first side 114 and is fixedly connected to a part of the first side 114, and at least one second The clamping portion 122 corresponds to the second side portion 115 and is fixedly connected to a part of the second side portion 115.
  • the two ends of the battery cell arrangement structure 11 are fixedly connected by at least two first clamping portions 121, and along the width direction W, both sides of the battery cell arrangement structure 11 pass through at least two first clamping parts.
  • the two clamping parts 122 are fixedly connected, thereby connecting each battery unit 111 along the length direction L and the width direction W as a whole.
  • the first clamping portion 121 and the second clamping portion 122 replace the existing end plates and side plates during the assembly process of the battery cells 111 of the present application, and compared with the end plates and the side plates, the first clamping The volume and weight of the portion 121 and the second clamping portion 122 are small, so that while the battery cells 111 are grouped, the energy density of the battery module 1 can be improved, and the space utilization rate can be improved.
  • the first clamping portion 121 is respectively connected to a part of the two ends” in this application includes the direct connection between the two and the indirect connection between the two through other components. When indirectly connected, there are other Components (for example, the first insulating plate 131 described below).
  • the second clamping portion 122 is connected to a part of the two sides respectively” includes the direct connection between the two and the indirect connection between the two through other components, and when indirectly connected, there are other Components (for example, the second insulating plate 132 described below).
  • the connecting member 12 needs to have high strength and rigidity.
  • the connecting member 12 can be made of metal or other high-strength materials.
  • the connecting member 12 can be made of cast aluminum.
  • the first clamping portion 121 is a first clamping plate with a plate-like structure
  • the second clamping portion 122 is a second clamping plate with a plate-like structure
  • the first clamping plate and the second clamping plate are perpendicular to each other.
  • the two clamping plates are not strictly vertical in the mathematical sense, as long as they can be connected to the ends and sides of the battery cell arrangement structure 11 respectively.
  • the plate surface of the first clamping plate is perpendicular to the longitudinal direction L, that is, the first clamping plate is connected to the first end 112 and the first end 112 of the battery cell arrangement structure 11
  • the two ends 113 are parallel, so that the battery cell arrangement structure 11 can be clamped along the length direction L by at least two first clamping plates, and the second clamping plate is connected to the first side 114 and the second side 114 of the battery cell arrangement structure 11
  • the side portions 115 are parallel, so that the battery cell arrangement structure 11 can be clamped in the width direction W by at least two second clamping plates.
  • the area of the first clamping plate is smaller than the area of the first end 112 and the second end 113 of the battery cell arrangement structure 11 (that is, the area of the first clamping plate is smaller than the area of the existing end plate),
  • the area of the second clamping plate is smaller than the area of the first side 114 and the second side 115 in the battery cell arrangement structure 11 (that is, the area of the second clamping plate is smaller than the area of the existing side plate).
  • first clamping portion 121 and the second clamping portion 122 are plate-shaped structures, they have the advantages of simple structure, convenient molding, and small thickness and weight, thereby further improving the energy of the battery module 1.
  • the clamping portion of the plate structure also makes the contact area with the battery cell arrangement structure 11 larger under the same volume, thereby improving the connection reliability.
  • the battery module 1 includes 4 connecting parts 12, two by two are located at both ends of the battery cell arrangement structure 11 along the length direction L (or width direction W), and The connecting members 12 are respectively located at the four corners of the battery cell arrangement structure 11.
  • the four connecting members 12 include four first clamping portions 121 and four second clamping portions 122. Therefore, the battery cell arrangement structure 11 , Along the length direction L, the first end 112 and the second end 113 are fixedly connected by four first clamping portions 121, and along the width direction W, the first side 114 and the second side 115 are connected by four second The clamping portion 122 is fixedly connected.
  • the grouping manner of the battery cells 11 in this embodiment has a high connection reliability under the premise that the fewest number of connection components 12 are used.
  • the battery module 1 may also include other numbers of connecting parts 12, and the number of connecting parts 12 is not limited in this application, and only the battery cells 111 can be connected.
  • the battery module 1 further includes one or more straps, which surround the battery cell arrangement structure 11 and the connecting member 12, so that the battery cell structure 11 is not connected to In addition to the fixing of the component 12, it is also fixed by a band to improve the connection reliability of each battery unit 111.
  • the battery module 1 when the battery module 1 includes a plurality of straps, the straps are distributed along the height direction H.
  • the battery module 1 includes a first strap 14 and The second strap 15 has two straps, both of which surround the battery cell arrangement structure 11 and the connecting member 12, and they are distributed along the height direction H.
  • the outer side of the connecting member 12 is provided with a first groove 126 and a second groove 127, the first groove 126 and the second groove 127 are distributed along the height direction H, the first strap 14
  • the part along the height direction H is located in the first groove 126 and fits the first recess 126
  • the portion of the second strap 15 along the height direction H is located in the second recess 127 and is in contact with the second recess.
  • Slot 127 is adapted.
  • the first clamping portion 121 and the second clamping portion 122 of the connecting member 12 are both provided with the first groove 126 and the second groove 127 described above.
  • the first strap 14 and the second strap 15 can improve the connection reliability of each battery unit 111, and at the same time, the cooperation of the strap and the groove can prevent the strap from loosening.
  • the first strap 14 and/or the second strap 15 are made of high-rigidity material, such as spring steel.
  • the connecting member 12 in order to improve the strength of the connecting member 12, is usually made of a metal material.
  • the battery module 1 further includes at least two insulating members 13. The insulating member 13 Located between the connecting member 12 and the battery cell array structure 11, it is used for insulation between the connecting member 12 and the battery cell array structure 11. Therefore, the number of insulating parts 13 in the battery module 1 is not less than the number of connecting parts 12.
  • the insulating member 13 includes a first insulating plate 131 and a second insulating plate 132, wherein the surface of the first insulating plate 131 is perpendicular to the longitudinal direction L, that is, the first insulating plate 131 It is parallel to the first clamping part 121, the first end 112 and the second end 123, and the first insulating plate 131 covers at least the first clamping plate (the first clamping part 121); similarly, the The surface of the two insulating plates 132 is perpendicular to the width direction W, that is, the second insulating plate 132 is parallel to the second clamping portion 122, the first side portion 114, and the second side portion 115, and the second insulating plate 132 is at least Cover the second clamping plate (second clamping portion 122).
  • the first clamping portion 121 of the connecting member 12 is insulated from the battery cell array structure 11 by the first insulating plate 131, and the second clamping portion 122 of the connecting member 12 is insulated from the battery cell array structure 11 It is insulated by the second insulating plate 132.
  • the insulating member 13 further includes a third insulating plate 133 and a fourth insulating plate 134, and the plate surfaces of the third insulating plate 133 and the fourth insulating plate 134 are perpendicular to the height direction H, and
  • the third insulating plate 133 is connected to the top of the first insulating plate 131 and the second insulating plate 132
  • the fourth insulating plate 134 is connected to the bottom of the first insulating plate 131 and the second insulating plate 132.
  • the third insulating plate 133 abuts against the top of the battery cell arrangement structure 11
  • the fourth insulating plate 134 abuts against the bottom of the battery cell arrangement structure 11.
  • the insulating member 13 can achieve complete insulation between the battery cell array structure 11 and the connecting member 12 in the three directions of the length direction L, the width direction W, and the height direction H. And the four insulating plates of the insulating member 13 all abut against the surface of the battery cell array structure 11, so that the insulating member 13 can be mounted on the battery cell array structure 11, and at the same time, the first clamping portion 121 of the connecting member 12 and the second The two clamping portions 122 respectively abut against the first insulating plate 131 and the second insulating plate 132 of the insulating member 13, so as to realize the connection between the insulating member 13 and the connecting member 12.
  • connection structures can be provided between the insulating member 13 and the battery cell arrangement structure 11, and between the insulating member 13 and the connecting member 12 to realize the connection between the three.
  • the battery cell arrangement The connection between the structure 11, the insulating component 13 and the connecting component 12 can also be realized by the way of fixing by straps after the successive abutment.
  • the connection structure between the three can be omitted, and the structure is simple and the processing is convenient. , The advantage of improving the energy density of the battery module 1.
  • the connecting member 12 further includes a first connecting portion, and the first connecting portion is used to connect with the adjacent battery module 1.
  • the two adjacent battery modules 1 both have a connection Part 12, and both of the connecting parts 12 are provided with a first connecting part, so that the two battery modules 1 can be fixedly connected through their respective first connecting parts.
  • the battery modules 1 of the battery pack are connected by their respective connecting members 12. That is, the connecting member 12 can not only connect a plurality of battery cells 111 to form the battery module 1, but also connect adjacent battery modules.
  • the group 1 is connected. Therefore, compared with the grouping method of the battery pack in the prior art, the grouping method in the present application has the advantages of simple structure, and the connecting member 12 occupies a small space and a light weight, thereby improving the battery pack.
  • the space utilization rate of the box improves the energy density and group efficiency of the battery pack.
  • the first connecting portion of the connecting member 12 includes a first connecting plate 123 and/or a second connecting plate 124, wherein the surface of the first connecting plate 123 is perpendicular to the longitudinal direction L, and is opposite to the longitudinal direction L.
  • the first connecting plates 123 adjacent to the two battery modules 1 are fixedly connected, so that the two battery modules 1 are connected along the length direction L, as shown in FIG. 9;
  • the plate surface of the second connecting plate 124 is perpendicular to the width direction W, along the width In the direction W, the second connecting plates 124 of two adjacent battery modules 1 are fixedly connected, so that the two battery modules 1 are connected along the width direction W, as shown in FIGS.
  • the connecting member 12 includes the above-mentioned first connection The plate 123 and the second connecting plate 124, along the length direction L, the first connecting plates 123 of two adjacent battery modules 1 are fixedly connected, and along the width direction W, the second connecting plates 124 of two adjacent battery modules 1 are fixedly connected , So as to realize the connection of the battery module 1 along the length direction L and the width direction W, as shown in FIGS. 12 and 13.
  • the first connecting plate 123 is provided with a first mounting hole 123a
  • the second connecting plate 124 is provided with a second mounting hole (not shown in the figure)
  • the first mounting holes 123a of two adjacent battery modules 1 Connected the two are fixedly connected through two first mounting holes 123a; and/or, the second mounting holes of two adjacent battery modules 1 are connected, and the two are fixedly connected through two second mounting holes.
  • the first connecting plate 123 and/or the second connecting plate 124 are both flat-plate structures, and the size in the height direction H is small, thereby reducing the weight and volume of the connecting member 12 and improving the battery pack Energy density and space utilization.
  • the connecting component 12 further includes a second connecting portion 125, which is fixed to the bottom of the first clamping portion 121 and the second clamping portion 122, and/or, The second connecting portion 125 is fixed to the top of the first clamping portion 121 and the second clamping portion 122.
  • the second connecting portion 125 located at the bottom of the first clamping portion 121 and the second clamping portion 122 can be used to be fixedly connected to the box of the battery pack, and is located on the top of the first clamping portion 121 and the second clamping portion 122
  • the second connecting portion 125 can be used for fixed connection with the upper cover of the battery pack, and can also be used for fixed connection with the beam of the battery pack box.
  • the second connecting portion 125 located on the top of the first clamping portion 121 and the second clamping portion 122 can also be used for the battery above it.
  • the module 12 is connected, specifically connected to the second connecting portion 125 at the bottom of the first clamping portion 121 and the second clamping portion 122 in the upper battery module 12.
  • the second connecting portion 125 has a third mounting hole 125a through which it can be fixedly connected to the above-mentioned components.
  • the connecting component 12 can achieve the following three functions: connecting the battery cell arrangement structure 11, connecting the adjacent battery modules 12, and connecting the battery module 12 and the battery pack. It has a simple structure and a large volume. The advantages of small size and low weight can improve the energy density and group efficiency of the battery pack.

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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)
  • Battery Mounting, Suspending (AREA)

Abstract

一种电池模组（1）和电池包，电池模组（1）包括：电池单元排列结构（11），包括沿长度方向堆叠的多个电池单元（111），且沿长度方向，电池单元排列结构（11）具有相对设置的两端部，沿宽度方向，电池单元排列结构（11）具有相对设置的两侧部；连接部件（12），包括至少两个相互间隔的连接部件（12），连接部件（12）包括第一夹持部（121）和第二夹持部（122）；其中，各连接部件（12）中，至少两个第一夹持部（121）分别位于电池单元排列结构（11）沿长度方向的两端，且第一夹持部（121）分别与两端部的一部分连接；各连接部件（12）中，至少两个第二夹持部（122）分别位于电池单元排列结构（11）沿宽度方向的两侧，且第二夹持部（122）分别与两侧部的一部分连接。第一夹持部（121）和第二夹持部（122）体积和重量较小，能够提高电池模组（1）和电池包的能量密度及空间利用率。

Description

一种电池模组及电池包
相关申请的交叉引用
本申请要求享有于2019年04月18日提交的名称为“一种电池模组及电池包”的中国专利申请第201920528556.6号的优先权，该申请的全部内容通过引用并入本文中。
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及电池包。
背景技术
车辆的动力电池包括多个电池模组和箱体，电池模组位于箱体内，且各电池模组包括多个电池，多个电池相互堆叠，且各电池沿长度方向的两端分别设置有两端板，各电池沿宽度方向的两侧分别设置有两侧板，且端板与侧板固定连接，起到固定各电池的作用，并形成电池模组。该电池模组中，除电池外，端板和侧板占据较大的空间，具有较大的重量，从而导致电池模组和动力电池的空间利用率较低，能量密度也较低。
申请内容
有鉴于此，本申请实施例提供了一种电池模组及电池包，用以解决现有技术中电池模组的端板和侧板体积大、重量大导致的电池模组和电池包空间利用率低、能量密度低的问题。
本申请实施例提供了一种电池模组，所述电池模组包括：
电池单元排列结构，所述电池单元排列结构包括沿长度方向堆叠的多个电池单元，且沿长度方向，所述电池单元排列结构具有相对设置的两端部，沿宽度方向，所述电池单元排列结构具有相对设置的两侧部；
连接部件，所述电池模组包括至少两个相互间隔的所述连接部件，所 述连接部件包括第一夹持部和第二夹持部；
其中，各所述连接部件中，至少两个所述第一夹持部分别位于所述电池单元排列结构沿长度方向的两端，且所述第一夹持部分别与两所述端部的一部分连接；
各所述连接部件中，至少两个所述第二夹持部分别位于所述电池单元排列结构沿宽度方向的两侧，且所述第二夹持部分别与两所述侧部的一部分连接。
根据本申请的一个方面，所述连接部件包括第一夹持板和第二夹持板，所述第一夹持板与所述第二夹持板相互垂直，所述第一夹持板为所述第一夹持部，所述第二夹持板为所述第二夹持部；
所述第一夹持板的面积小于所述端部的面积，所述第二夹持板的面积小于所述侧部的面积。
根据本申请的一个方面，还包括至少一个绑带，所述绑带围绕所述电池单元排列结构和所述连接部件；
所述连接部件开设有凹槽，沿高度方向，所述绑带的一部分位于所述凹槽内。
根据本申请的一个方面，所述电池模组还包括至少两个绝缘部件，所述绝缘部件位于所述连接部件与所述电池单元排列结构之间。
根据本申请的一个方面，所述绝缘部件包括第一绝缘板和第二绝缘板，所述第一绝缘板至少覆盖所述第一夹持板，所述第二绝缘板至少覆盖所述第二夹持板。
根据本申请的一个方面，所述绝缘部件还包括第三绝缘板和第四绝缘板；
所述第三绝缘板连接于所述第一绝缘板和所述第二绝缘板的顶部，且所述第三绝缘板与所述电池单元排列结构的顶部相抵；
所述第四绝缘板连接于所述第一绝缘板和所述第二绝缘板的底部，且所述第四绝缘板与所述电池单元排列结构的底部相抵。
根据本申请的一个方面，所述连接部件还包括第一连接部，所述第一连接部用于与相邻所述电池模组相连。
同时，本申请实施例还提供一种电池包，所述电池包包括：
箱体，具有内腔；
多个电池模组，位于所述内腔；
其中，所述电池模组为以上所述的电池模组。
根据本申请的一个方面，所述连接部件包括第一连接部，所述第一连接部包括第一连接板和/或第二连接板；
沿长度方向，相邻两所述电池模组通过所述第一连接板固定连接，和/或；
沿宽度方向，相邻两所述电池模组通过所述第二连接板固定连接。
根据本申请的一个方面，所述连接部件还包括第二连接部，所述第二连接部固定于所述第一夹持部和所述第二夹持部的底部，和/或；
所述第二连接部固定于所述第一夹持部和所述第二夹持部的顶部。
本申请中，沿长度方向，该电池单元排列结构的两端通过至少两个第一夹持部固定连接，沿宽度方向，该电池单元排列结构的两侧通过至少两个第二夹持部固定连接，从而将各电池单元沿长度方向和宽度方向均连接为一体。因此，本申请的电池单元成组过程中通过第一夹持部和第二夹持部代替现有的端板和侧板，且相较于端板和侧板，第一夹持部与第二夹持部的体积和重量均较小，从而在实现电池单元成组的同时，能够提高电池模组和电池包的能量密度，并能够提高空间利用率。
附图说明
为了更清楚地说明本申请实施例的技术方案，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它的附图。
图1为本申请所提供电池模组在第一种具体实施例中的结构示意图；
图2为图1的爆炸图；
图3为图2中连接部件在一种具体实施例中的结构示意图；
图4为图2中绝缘部件的结构示意图；
图5为本申请所提供电池模组在第二种具体实施例中的俯视图；
图6为图5中Ⅰ部分的局部放大图；
图7为本申请所提供电池模组在第三种具体实施例中的俯视图；
图8为图7中Ⅱ部分的局部放大图；
图9为图1中的电池模组沿长度方向L连接的结构示意图；
图10为图5中的电池模组沿宽度方向W连接的结构示意图；
图11为图10中Ⅲ部分的局部放大图；
图12为图7中的电池模组沿长度方向L和宽度方向W连接的结构示意图；
图13为图12中Ⅳ部分的局部放大图。
附图标记：
1-电池模组；
11-电池单元排列结构；
111-电池单元；
112-第一端部；
113-第二端部；
114-第一侧部；
115-第二侧部；
12-连接部件；
121-第一夹持部；
122-第二夹持部；
123-第一连接板；
123a-第一安装孔；
124-第二连接板；
125-第二连接部；
125a-第三安装孔；
126-第一凹槽；
127-第二凹槽；
13-绝缘部件；
131-第一绝缘板；
132-第二绝缘板；
133-第三绝缘板；
134-第四绝缘板；
14-第一绑带；
15-第二绑带。
具体实施方式
为了更好的理解本申请的技术方案，下面结合附图对本申请实施例进行详细描述。
应当明确，所描述的实施例仅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作出创造性劳动前提下所获得的所有其它实施例，都属于本申请保护的范围。
在本申请实施例中使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本申请。在本申请实施例和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。
应当理解，本文中使用的术语“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
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”。
请参考附图1～13，其中，图1为本申请所提供电池模组在第一种具体 实施例中的结构示意图；图2为图1的爆炸图；图3为图2中连接部件在一种具体实施例中的结构示意图；图4为图2中绝缘部件的结构示意图；图5为本申请所提供电池模组在第二种具体实施例中的俯视图；图6为图5中Ⅰ部分的局部放大图；图7为本申请所提供电池模组在第三种具体实施例中的俯视图；图8为图7中Ⅱ部分的局部放大图；图9为图1中的电池模组沿长度方向L连接的结构示意图；图10为图5中的电池模组沿宽度方向W连接的结构示意图；图11为图10中Ⅲ部分的局部放大图；图12为图7中的电池模组沿长度方向L和宽度方向W连接的结构示意图；图13为图12中Ⅳ部分的局部放大图。
本申请实施例提供一种电池包，该电池包包括箱体和位于箱体内腔的多个电池模组1，根据电池包安装空间的限制以及电池包容量的要求，多个电池模组1可沿长度方向L、宽度方向W、高度方向H三个方向中的任意方向堆叠，例如，图9中的电池模组1沿长度方向L堆叠，图10中的电池模组1沿宽度方向W堆叠，图12中的电池模组1沿长度方向L和宽度方向W堆叠。同时，该电池包的箱体用于安装各电池模组1，还能够用于隔绝电池模组1与外界环境，起到防水防尘的作用。
其中，如图1和图2所示，该电池模组1包括电池单元排列结构11，该电池单元排列结构11包括沿长度方向L(定义电池单元111的堆叠方向为电池单元排列结构11的长度方向L)堆叠的多个电池单元111，相邻电池单元111之间可采用胶粘的方式连接。同时，沿长度方向L，该电池单元排列结构11具有相对设置的两端部，分别为第一端部112和第二端部113，该第一端部112和第二端部113由各电池单元111的端面组成；沿宽度方向W，该电池单元排列结构11具有相对设置的两侧部，分别为第一侧部114和第二侧部115，该第一侧部114和第二侧部115由各电池单元111的侧面组成。
进一步地，该电池模组1还包括至少两个相互间隔的连接部件12，该连接部件12包括第一夹持部121和第二夹持部122，其中，各连接部件12中，至少两个第一夹持部121位于电池单元排列结构11沿长度方向L的两端，即至少两个第一夹持部121分设于电池单元排列结构11沿长度 方向L的两端，并与两端部的一部分相连，即至少一个第一夹持部121与第一端部112对应，并与该第一端部112的一部分固定连接，至少一个第一夹持部121与第二端部113对应，并与该第二端部113的一部分固定连接。
同时，各连接部件12中，至少两个第二夹持部122位于电池单元排列结构11沿宽度方向W的两侧，即至少两个第二夹持部122分设于电池单元排列结构11沿宽度方向W的两侧，并与两侧部的一部分固定连接，即至少一个第二夹持部122与第一侧部114对应，并与该第一侧部114的一部分固定连接，至少一个第二夹持部122与第二侧部115对应，并与该第二侧部115的一部分固定连接。
本申请中，沿长度方向L，该电池单元排列结构11的两端通过至少两个第一夹持部121固定连接，沿宽度方向W，该电池单元排列结构11的两侧通过至少两个第二夹持部122固定连接，从而将各电池单元111沿长度方向L和宽度方向W均连接为一体。因此，本申请的电池单元111成组过程中通过第一夹持部121和第二夹持部122代替现有的端板和侧板，且相较于端板和侧板，第一夹持部121与第二夹持部122的体积和重量均较小，从而在实现电池单元111成组的同时，能够提高电池模组1的能量密度，并能够提高空间利用率。
需要说明的是，本申请中“第一夹持部121分别与两端部的一部分连接”包括二者直接连接，也包括二者通过其他部件间接连接，间接连接时，二者之间具有其他部件(例如以下所述的第一绝缘板131)。同样地，本申请中的“第二夹持部122分别与两侧部的一部分连接”包括二者直接连接，也包括二者通过其他部件间接连接，且间接连接时，二者之间具有其他部件(例如以下所述的第二绝缘板132)。
同时，本申请的电池模组1中，当电池单元111发生热膨胀时，膨胀力作用于连接部件12的第一夹持部121，因此，该连接部件12需具有较高的强度和刚度，通常情况下，该连接部件12可采用金属或其他高强度材料，例如连接部件12可采用铸铝材料。本申请中的电池模组省去现有的端板和侧板后，相邻连接部件12之间的空间能够作为电池单元111热 膨胀的膨胀空间，从而能够避免各电池单元11膨胀力叠加损坏电池模组1。
具体地，如图3所示，该连接部件12中，第一夹持部121为板状结构的第一夹持板，第二夹持部122为板状结构的第二夹持板，且该第一夹持板与第二夹持板相互垂直，其中，两夹持板并非数学上严格意义的垂直，只要二者能够分别与电池单元排列结构11的端部和侧部相连即可。同时，该连接部件12与电池单元排列结构11固定连接时，第一夹持板的板面与长度方向L垂直，即第一夹持板与电池单元排列结构11的第一端部112和第二端部113平行，从而通过至少两个第一夹持板能够沿长度方向L夹紧该电池单元排列结构11，第二夹持板与电池单元排列结构11的第一侧部114和第二侧部115平行，从而通过至少两个第二夹持板能够沿宽度方向W夹紧该电池单元排列结构11。
同时，该第一夹持板的面积小于该电池单元排列结构11中第一端部112和第二端部113的面积(即第一夹持板的面积小于现有的端板的面积)，第二夹持板的面积小于该电池单元排列结构11中第一侧部114和第二侧部115的面积(即第二夹持板的面积小于现有的侧板的面积)。
本实施例中，第一夹持部121和第二夹持部122为板状结构时，具有结构简单、成型方便，以及厚度和重量较小的优点，从而进一步提高该电池模组1的能量密度，同时，板状结构的夹持部还使得在相同的体积下与电池单元排列结构11的接触面积较大，从而提高连接可靠性。
如图1和图2所示的实施例中，该电池模组1包括4个连接部件12，两两一组位于电池单元排列结构11沿长度方向L(或宽度方向W)的两端，且各连接部件12分别位于该电池单元排列结构11的四个角，四个连接部件12包括四个第一夹持部121和四个第二夹持部122，因此，该电池单元排列结构11中，沿长度方向L，第一端部112和第二端部113通过四个第一夹持部121固定连接，沿宽度方向W，第一侧部114和第二侧部115通过四个第二夹持部122固定连接。
该实施例中电池单元11的成组方式在采用数量最少的连接部件12的前提下，具有较高的连接可靠性。当然，该电池模组1还可包括其他数量 的连接部件12，本申请对连接部件12的数量不作限定，只能能够连接各电池单元111即可。
进一步地，如图1和图2所示，该电池模组1还包括一个或多个绑带，该绑带围绕电池单元排列结构11和连接部件12，从而使得该电池单元结构11除通过连接部件12固定外，还通过绑带固定，提高各电池单元111的连接可靠性。
具体地，当该电池模组1包括多个绑带时，各绑带沿高度方向H分布，如图1和图2所示的实施例中，该电池模组1包括第一绑带14和第二绑带15两个绑带，二者均围绕电池单元排列结构11和连接部件12，且二者沿高度方向H分布。其中，如图3所示，该连接部件12的外侧开设有第一凹槽126和第二凹槽127，该第一凹槽126与第二凹槽127沿高度方向H分布，第一绑带14沿高度方向H的部分位于该第一凹槽126内并与第一凹槽126相适配，第二绑带15沿高度方向H的部分位于该第二凹槽127内并与第二凹槽127相适配。同时，该连接部件12的第一夹持部121与第二夹持部122均设置上述第一凹槽126和第二凹槽127。
本实施例中，通过第一绑带14和第二绑带15能够提高各电池单元111的连接可靠性，同时，绑带与凹槽的配合能够防止绑带松脱。且该第一绑带14和/或第二绑带15为高刚度材料制成，例如弹簧钢等。
以上各实施例中，为了提高连接部件12的强度，该连接部件12通常采用金属材料，如图1和图2所示，该电池模组1还包括至少两个绝缘部件13，该绝缘部件13位于连接部件12与电池单元排列结构11之间，用于连接部件12与电池单元排列结构11之间的绝缘。因此，该电池模组1中绝缘部件13的数量不小于连接部件12的数量。
具体地，如图4所示，该绝缘部件13包括第一绝缘板131和第二绝缘板132，其中，该第一绝缘板131的板面与长度方向L垂直，即该第一绝缘板131与第一夹持部121、第一端部112和第二端部123均平行，且该第一绝缘板131至少覆盖第一夹持板(第一夹持部121)；同样地，该第二绝缘板132的板面与宽度方向W垂直，即该第二绝缘板132与第二夹持部122、第一侧部114和第二侧部115均平行，且该第二绝缘板132至少 覆盖第二夹持板(第二夹持部122)。
本实施例中，该连接部件12的第一夹持部121与电池单元排列结构11之间通过第一绝缘板131绝缘，连接部件12的第二夹持部122与电池单元排列结构11之间通过第二绝缘板132绝缘。
进一步地，如图4所示，该绝缘部件13还包括第三绝缘板133和第四绝缘板134，该第三绝缘板133和第四绝缘板134的板面均与高度方向H垂直，且该第三绝缘板133连接于第一绝缘板131和第二绝缘板132的顶部，第四绝缘板134连接于第一绝缘板131和第二绝缘板132的底部，同时，该第三绝缘板133与电池单元排列结构11的顶部相抵，第四绝缘板134与电池单元排列结构11的底部相抵。
因此，通过该绝缘部件13，能够实现电池单元排列结构11与连接部件12之间沿长度方向L、宽度方向W和高度方向H三个方向的完全绝缘。且该绝缘部件13的四块绝缘板均与电池单元排列结构11的表面相抵，从而能够将该绝缘部件13安装于电池单元排列结构11，同时，连接部件12的第一夹持部121和第二夹持部122分别与绝缘部件13的第一绝缘板131和第二绝缘板132相抵，从而实现绝缘部件13与连接部件12之间的连接。
当然，该绝缘部件13与电池单元排列结构11之间、绝缘部件13与连接部件12之间还可设置其他连接结构，以实现三者之间的连接，但是，本实施例中，电池单元排列结构11、绝缘部件13与连接部件12之间依次抵接后通过绑带固定的方式也能够实现三者的连接，同时，还能够省去三者之间的连接结构，具有结构简单、加工方便、提高电池模组1的能量密度的优点。
进一步地，以上各实施例中，该连接部件12还包括第一连接部，且该第一连接部用于与相邻电池模组1相连，具体地，相邻两电池模组1均具有连接部件12，且二者的连接部件12均设置有第一连接部，从而使得两电池模组1之间能够通过各自的第一连接部实现固定连接。
本实施例中，电池包的各电池模组1之间通过各自的连接部件12相连，即该连接部件12不仅能够将多个电池单元111连接形成电池模组1， 还能够将相邻电池模组1连接起来，因此，与现有技术中电池包的成组方式相比，本申请中的成组方式具有结构简单的优点，且连接部件12占据空间小、重量小，从而能够提高电池包箱体的空间利用率，提高电池包的能量密度和成组效率。
具体地，该连接部件12的第一连接部包括第一连接板123和/或第二连接板124，其中，该第一连接板123的板面与长度方向L垂直，沿长度方向L，相邻两电池模组1的第一连接板123固定连接，从而实现两电池模组1沿长度方向L相连，如图9所示；第二连接板124的板面与宽度方向W垂直，沿宽度方向W，相邻两电池模组1的第二连接板124固定连接，从而实现两电池模组1沿宽度方向W相连，如图10和图11所示；该连接部件12包括上述第一连接板123和第二连接板124，沿长度方向L，相邻两电池模组1的第一连接板123固定连接，沿宽度方向W，相邻两电池模组1的第二连接板124固定连接，从而实现电池模组1沿长度方向L和宽度方向W的连接，如图12和图13所示。
更具体地，该第一连接板123开设有第一安装孔123a，第二连接板124开设有第二安装孔(图中未示出)，相邻两电池模组1的第一安装孔123a连通，二者通过两第一安装孔123a固定连接；和/或，相邻两电池模组1的第二安装孔连通，二者通过两第二安装孔固定连接。
同时，本实施例中，该第一连接板123和/或第二连接板124均为平板结构，且其高度方向H的尺寸较小，从而减小连接部件12的重量和体积，提高电池包的能量密度和空间利用率。
更进一步地，如图3所示，该连接部件12还包括第二连接部125，该第二连接部125固定于第一夹持部121和第二夹持部122的底部，和/或，该第二连接部125固定于第一夹持部121和第二夹持部122的顶部。
其中，位于第一夹持部121和第二夹持部122底部的第二连接部125能够用于与电池包的箱体固定连接，位于第一夹持部121和第二夹持部122顶部的第二连接部125能够用于与电池包的上盖固定连接，还能够用于与电池包箱体的梁固定连接。另外，当该电池包内沿高度方向H堆叠有多个电池模组12时，位于第一夹持部121和第二夹持部122顶部的第二连 接部125也能够用于与其上方的电池模组12相连，具体与上方的电池模组12中位于第一夹持部121和第二夹持部122底部的第二连接部125相连。
具体地，该第二连接部125具有第三安装孔125a，通过该第三安装孔125a能够与上述各部件固定连接。
因此，本申请中，该连接部件12能够实现下述三种功能：连接电池单元排列结构11、连接相邻电池模组12、连接电池模组12与电池包的箱体，具有结构简单、体积小、重量小的优点，从而能够提高电池包的能量密度以及成组效率。
以上所述仅为本申请的较佳实施例而已，并不用以限制本申请，凡在本申请的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本申请保护的范围之内。

Claims (11)

  1. 一种电池模组，，所述电池模组包括：
    电池单元排列结构，所述电池单元排列结构包括沿长度方向(L)堆叠的多个电池单元，且沿长度方向(L)，所述电池单元排列结构具有相对设置的两端部，沿宽度方向(W)，所述电池单元排列结构具有相对设置的两侧部；
    连接部件，所述电池模组包括至少两个相互间隔的所述连接部件，所述连接部件包括第一夹持部和第二夹持部；
    其中，各所述连接部件中，至少两个所述第一夹持部分别位于所述电池单元排列结构沿长度方向(L)的两端，且所述第一夹持部分别与两所述端部的一部分连接；
    各所述连接部件中，至少两个所述第二夹持部分别位于所述电池单元排列结构沿宽度方向(W)的两侧，且所述第二夹持部分别与两所述侧部的一部分连接。
  2. 根据权利要求1所述的电池模组，其中，所述连接部件包括第一夹持板和第二夹持板，所述第一夹持板与所述第二夹持板相互垂直，所述第一夹持板为所述第一夹持部，所述第二夹持板为所述第二夹持部；
    所述第一夹持板的面积小于所述端部的面积，所述第二夹持板的面积小于所述侧部的面积。
  3. 根据权利要求2所述的电池模组，其中，还包括至少一个绑带，所述绑带围绕所述电池单元排列结构和所述连接部件；
    所述连接部件开设有凹槽，沿高度方向(H)，所述绑带的一部分位于所述凹槽内。
  4. 根据权利要求2或3所述的电池模组，其中，所述电池模组还包括至少两个绝缘部件，所述绝缘部件位于所述连接部件与所述电池单元排列结构之间。
  5. 根据权利要求4所述的电池模组，其中，所述绝缘部件包括第一绝缘板和第二绝缘板，所述第一绝缘板至少覆盖所述第一夹持板，所述第 二绝缘板至少覆盖所述第二夹持板。
  6. 根据权利要求5所述的电池模组，其中，所述绝缘部件还包括第三绝缘板和第四绝缘板；
    所述第三绝缘板连接于所述第一绝缘板和所述第二绝缘板的顶部，且所述第三绝缘板与所述电池单元排列结构的顶部相抵；
    所述第四绝缘板连接于所述第一绝缘板和所述第二绝缘板的底部，且所述第四绝缘板与所述电池单元排列结构的底部相抵。
  7. 根据权利要求1～6中任一项所述的电池模组，其中，所述连接部件还包括第一连接部，所述第一连接部用于与相邻所述电池模组相连。
  8. 一种电池包，其中，所述电池包包括：
    箱体，具有内腔；
    多个电池模组，位于所述内腔；
    其中，所述电池模组为权利要求1～7中任一项所述的电池模组。
  9. 根据权利要求8所述的电池包，其中，所述连接部件包括第一连接部，所述第一连接部包括第一连接板和/或第二连接板；
    沿长度方向(L)，相邻两所述电池模组通过所述第一连接板固定连接，和/或；
    沿宽度方向(W)，相邻两所述电池模组通过所述第二连接板固定连接。
  10. 根据权利要求8或9所述的电池包，其中，所述连接部件包括第二连接部，所述第二连接部固定于所述第一夹持部和所述第二夹持部的底部，和/或；
    所述第二连接部固定于所述第一夹持部和所述第二夹持部的顶部。
  11. 一种车辆，包括权利要求8-10任一项所述的电池包。
PCT/CN2020/081738 2019-04-18 2020-03-27 一种电池模组及电池包 WO2020211617A1 (zh)

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