WO2024255914A1 - 电池包及储能系统 - Google Patents

电池包及储能系统 Download PDF

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Publication number
WO2024255914A1
WO2024255914A1 PCT/CN2024/099825 CN2024099825W WO2024255914A1 WO 2024255914 A1 WO2024255914 A1 WO 2024255914A1 CN 2024099825 W CN2024099825 W CN 2024099825W WO 2024255914 A1 WO2024255914 A1 WO 2024255914A1
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WO
WIPO (PCT)
Prior art keywords
battery
panel
battery pack
output row
terminal
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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.)
Pending
Application number
PCT/CN2024/099825
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English (en)
French (fr)
Inventor
李伟
董亚鹏
区彩霞
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Eve Energy Co Ltd
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Eve Energy Co Ltd
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Publication date
Application filed by Eve Energy Co Ltd filed Critical Eve Energy Co Ltd
Publication of WO2024255914A1 publication Critical patent/WO2024255914A1/zh
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50Current conducting connections for cells or batteries
    • H01M50/502Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/505Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising a single busbar
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Definitions

  • the present application relates to the field of energy storage technology, and in particular to a battery pack and an energy storage system.
  • Energy storage systems are widely used and can be used in many scenarios such as homes, industrial equipment, unstable power, and power storage and power generation in areas without electricity to optimize energy saving.
  • Energy storage systems usually include multiple battery packs, which are arranged in a vertical stacking manner.
  • the positive terminals of adjacent battery packs are connected by wires, and the negative terminals of adjacent battery packs are connected by wires, so as to realize the parallel connection of multiple battery packs.
  • the positive and negative terminals are led out from the same side, and the positive and negative terminals are arranged adjacent to each other, which leads to dense and messy wiring when parallel wiring, inconvenient maintenance in the later stage, and the positive and negative electrodes are easily short-circuited by mistake.
  • the present application provides a battery pack that can avoid dense and messy wiring when the battery packs are connected in parallel, thereby reducing the risk of short circuits.
  • the present application provides an energy storage system, which, by providing the above-mentioned battery pack, can avoid dense and messy wiring when the battery packs are connected in parallel, facilitate later maintenance, and reduce the risk of short circuit.
  • an embodiment of the present application provides a battery pack, comprising:
  • a box body wherein a first panel of the box body is provided with a first terminal and a second terminal, the length direction of the first panel is a first direction, and the first terminal and the second terminal are respectively located on both sides of the first panel along the first direction;
  • a battery module is arranged in the box, and the battery module includes a plurality of battery cells arranged in series.
  • the battery cells located at the head end of the series loop are connected to the first output row, and the battery cells located at the end of the series loop are connected to the second output row.
  • the first output row and the second output row are respectively located on both sides of the battery module along the first direction.
  • the first output row is electrically connected to the first terminal, and the second output row is electrically connected to the second terminal.
  • an embodiment of the present application provides an energy storage system, comprising a plurality of the above-mentioned battery packs, wherein the plurality of battery packs are stacked and arranged in parallel along the height direction of the first panel, the first terminal heads of the plurality of battery packs are located on the same side and connected by a first power line, and the second terminal heads of the plurality of battery packs are located on the same side and connected by a second power line.
  • the present application provides a battery pack, which leads the first output row and the second output row from both sides of the battery module along the first direction, and on this basis, facilitates the first terminal and the second terminal to be led out on both sides of the first panel along the first direction, so that the first output row corresponds to the position of the first terminal, and the second output row corresponds to the position of the second terminal. Since the first terminal and the second terminal are separately arranged on both sides, when multiple battery packs are connected in parallel, the wiring can be clear and regular, which is convenient for parallel installation and later maintenance, and it is not easy to connect the positive and negative poles incorrectly, reducing the risk of short circuit.
  • the energy storage system provided in the present application by providing the above-mentioned battery pack, can avoid dense and messy wiring when the battery packs are connected in parallel, facilitate subsequent maintenance, and reduce the risk of short circuit.
  • FIG1 is a schematic diagram of the structure of an energy storage system provided in an embodiment of the present application.
  • FIG2 is a schematic diagram of the structure of a battery pack provided in an embodiment of the present application.
  • FIG3 is a schematic diagram of the structure of a battery pack without a housing provided in an embodiment of the present application.
  • FIG4 is a schematic diagram of the structure of multiple battery cells after assembly according to an embodiment of the present application.
  • FIG5 is a schematic diagram of the structure of a single battery module provided in an embodiment of the present application.
  • FIG. 6 is a schematic diagram of the structure of two battery modules provided in an embodiment of the present application.
  • This embodiment provides a battery pack 100 and an energy storage system, as shown in FIG1 , the energy storage system includes a plurality of battery packs 100, and the plurality of battery packs 100 are stacked and arranged in parallel.
  • the battery packs 100 are arranged to be three, and in other embodiments, the battery packs 100 may also be arranged to be other numbers according to actual needs, which is not limited here.
  • the battery pack 100 includes a box body 10 and a battery module 20 disposed in the box body 10, wherein the box body 10 includes a shell 12 and a first panel 11, one end of the shell 12 is open, and the first panel 11 is located at the front side of the shell 12 and is configured to block the opening of the shell 12 to form a closed cavity.
  • the length direction of the box body 10 is the front-to-back direction, which is the second direction mentioned later
  • the width direction of the box body 10 is the left-to-right direction, which is the first direction mentioned later
  • the height direction of the box body 10 is the up-down direction, which is the height direction and the third direction of the first panel 11 mentioned later.
  • a first terminal 111 and a second terminal 112 are provided on the first panel 11 of the box body 10.
  • the first terminal 111 and the second terminal 112 are respectively located on both sides of the first panel 11 along the first direction (left-right direction).
  • One of the first terminal 111 and the second terminal 112 is a positive terminal and the other is a negative terminal.
  • the battery module 20 includes a plurality of battery cells 21 arranged in series, wherein the battery cells 21 are square shell battery cells, and the plurality of battery cells 21 are connected in series in sequence to form a series circuit, wherein the battery cell 21 located at the head end of the series circuit is connected to a first output row 22, and the battery cell 21 located at the end of the series circuit is connected to a second output row 23, and the first output row 22 and the second output row 23 are respectively located on both sides of the battery module 20 along a first direction (left-right direction), and one of the first output row 22 and the second output row 23 is a positive output row, and the other is a negative output row, and the first output row 22 corresponds to the polarity of the first terminal 111, and the second output row 23 corresponds to the polarity of the second terminal 112, the first output row 22 is electrically connected to the first terminal 111, and the second output row 23 is electrically connected to the second terminal 112, thereby realizing voltage output.
  • first output row 22 and the second output row 23 By leading the first output row 22 and the second output row 23 from the left and right sides of the battery module 20, respectively, on this basis, it is convenient to lead the first terminal 111 and the second terminal 112 from the left and right sides of the first panel 11, respectively, so that the first output row 22 corresponds to the position of the first terminal 111, and the second output row 23 corresponds to the position of the second terminal 112. Since the first terminal 111 and the second terminal 112 are separately arranged on the left and right sides, when multiple battery packs 100 are stacked and connected in parallel along the height direction of the first panel 11, referring to FIG.
  • the first terminals 111 of the multiple battery packs 100 are located on the same side (left side) and connected through the first power line 200, and the second terminals 112 of the multiple battery packs 100 are located on the same side (right side) and connected through the second power line 300, so that the routing of the power line can be clear and regular, which is convenient for parallel installation and later maintenance, and it is not easy to connect the positive and negative poles incorrectly, reducing the risk of short circuit.
  • the battery pack 100 further includes a battery management system (BMS) module 30.
  • the BMS module 30 is disposed in the housing 12 and close to the opening of the housing 12.
  • the front side of the BMS module 30 is provided with a first panel 11, and the first panel 11 is sealed at the open end of the housing 12 to form a closed box 10.
  • the first panel 11 constituting the box 10 is the first panel 11 of the BMS module 30.
  • the box 10 and the BMS module 30 share a first panel 11, which simplifies the structure of the battery pack 100 and saves manufacturing costs.
  • the first output row 22 can be electrically connected to the first terminal 111 through the built-in connection row or wiring harness of the BMS module 30, and the second output row 23 can be electrically connected to the second terminal 112 through the built-in connection row or wiring harness of the BMS module 30.
  • a plurality of battery cells 21 are placed flat and stacked. By placing a plurality of battery cells 21 flat, it is convenient to lead the first output row 22 and the second output row 23 out from the left and right sides of the battery module 20 .
  • the battery pack 100 includes two groups of battery modules 20 , which are arranged side by side along a first direction (left-right direction) and connected in series to form a 48V system.
  • a first output row 22 is provided on the left side of the left battery module 20
  • a second output row 23 is provided on the right side of the right battery module 20 .
  • a battery module 20 includes eight battery cells 21, and the eight battery cells 21 are stacked in two layers in the vertical direction, and four battery cells 21 are placed flat in each layer.
  • Each battery cell 21 includes a first electrode 211 and a second electrode 212, and the first electrode 211 and the second electrode 212 are located on the same side of the battery cell 21, and one of the first electrode 211 and the second electrode 212 is a positive electrode, and the other is a negative electrode.
  • the two battery cells 21 arranged side by side face opposite directions, that is, in the left-right direction, one end of the electrodes of the two battery cells 21 face opposite directions, and the first electrodes 211 and the second electrodes 212 of the two battery cells 21 are arranged alternately, that is, the first electrode 211 of the left battery cell 21 and the second electrode 212 of the right battery cell 21 are located on the same side, and the second electrode 212 of the left battery cell 21 and the first electrode 211 of the right battery cell 21 are located on the same side, the first electrode 211 of one of the left battery cells 21 is connected to the first output row 22, and the second electrode 212 of one of the right battery cells 21 is connected to the second output row 23.
  • the second electrode 212 of the front battery cell 21 and the first electrode 211 of the rear battery cell 21 are disposed adjacent to each other.
  • the large surfaces of two adjacent battery cells 21 are in contact with each other, and the first electrodes 211 and the second electrodes 212 of the two battery cells 21 are alternately arranged, that is, the first electrode 211 of the upper battery cell 21 and the second electrode 212 of the lower battery cell 21 are located on the same side, and the second electrode 212 of the upper battery cell 21 and the first battery cell 21 of the lower battery cell 21 are located on the same side.
  • the two battery cells 21 located on the front side of the upper layer are respectively a head battery cell 213 and a tail battery cell 214
  • the first electrode 211 of the head battery cell 213 is connected to the first output row 22
  • the second electrode 212 of the tail battery cell 214 is connected to the second output row 23
  • the first electrodes 211 and the second electrodes 212 of two adjacent battery cells 21 are connected in series through an intermediate series row 24, and each intermediate series row 24 is connected to the corresponding electrode by welding, riveting, etc.
  • the second output row 23 of the first battery module 20 is connected to the first output row 22 of the second battery module 20, thereby realizing the series connection of the terminal battery cell 214 of the first battery module 20 and the head battery cell 213 of the second battery module 20, and then realizing the series connection of the two battery modules 20.
  • the first output row 22 of the first battery module 20 and the second output row 23 of the second battery module 20 are located at the left and right ends respectively, and the first output row 22 of the first battery module 20 is communicatively connected to the first terminal 111, and the second output row 23 of the second battery module 20 is communicatively connected to the second terminal 112.
  • the multiple battery cells 21 in the battery module 20 By arranging the multiple battery cells 21 in the battery module 20 in a flat and stacked arrangement, it is convenient to lead out the first output row 22 and the second output row 23 from the left and right ends of the battery module 20 respectively, so as to facilitate the first terminal 111 and the second terminal 112 to be led out on the left and right sides of the first panel 11 respectively.
  • the routing of the power lines can be ensured to be clear and regular, which is convenient for parallel installation and subsequent maintenance, and it is not easy to connect the positive and negative poles incorrectly, reducing the risk of short circuit.
  • different voltage requirements may also be met by changing the number of battery cells 21 connected in series in each battery module 20 or by changing the number of battery modules 20 .
  • a first communication port 113 and a second communication port 114 are further provided on the first panel 11 , and the first communication port 113 and the second communication port 114 are arranged at intervals along the height direction (up and down direction) of the first panel 11 .
  • the first communication port 113 of one battery pack 100 and the second communication port 114 of the adjacent battery pack 100 are arranged adjacent to each other and are connected to each other through a communication line 400 and the communication connection is realized through the communication line 400 , and the first communication port 113 of the uppermost battery pack 100 and the second communication port 114 of the lowermost battery pack 100 are respectively connected to the external device through the communication line 400 to realize the function of communicating with the external device.
  • a temperature averaging plate 27 is provided between two adjacent battery cells 21 in the third direction, and the temperature averaging plate 27 is in contact with the large surface of the battery cell 21, so that the contact area between the temperature averaging plate 27 and the battery cell 21 is as large as possible, thereby increasing the effective heat dissipation area and thermal conductivity, and enhancing the temperature consistency between the battery cells 21.
  • the temperature averaging plate 27 is a copper plate with good thermal conductivity. In practical applications, a whole temperature averaging plate 27 can be placed directly between the upper and lower layers of battery cells 21.
  • the temperature averaging plate 27 is hollow and filled with phase change material, such as a copper vapor chamber (VC).
  • phase change material such as a copper vapor chamber (VC).
  • the battery module 20 further includes two fixing belts 26 and two end plates 25.
  • the two end plates 25 are opposite and spaced apart, and a plurality of battery cells 21 are located between the two end plates 25.
  • the two fixing belts 26 are respectively mounted on the two end plates 25 to bundle and fix the battery cells 21 and the end plates 25 to form an integrated battery module 20, thereby ensuring the overall firmness of the battery module 20.
  • the fixing belt 26 can be a steel belt, which has a high structural strength.
  • a limiting groove is provided on the end plate 25, and the fixing belt 26 is accommodated in the limiting groove to limit the fixing belt 26, thereby ensuring that the fixing belt 26 is not easily displaced during the bundling process, thereby improving the stability of the bundling.
  • a handle 115 is provided on the first panel 11. By providing the handle 115, the battery pack 100 can be easily taken in and out.
  • the handle 115 may be hinged on the first panel 11, and the first panel 11 may be provided with a groove configured to accommodate the handle 115.
  • the handle 115 may be rotated into the groove for storage, which does not affect the normal use of the battery pack 100; when the handle 115 is needed, the handle 115 may be rotated out of the groove, and the battery pack 100 may be taken in and out through the handle 115, which is flexible and convenient to use.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

一种电池包(100)及储能系统。储能系包括电池包(100),电池包(100)包括箱体(10)和电池模组(20),箱体(10)的第一面板(11)设有第一接线头(111)和第二接线头(112),第一接线头(111)和第二接线头(112)分别位于第一面板(11)沿第一方向的两侧;电池模组(20)设于箱体(10)内,电池模组(20)包括多个串联设置的电芯(21),位于串联回路首端的电芯(21)连接有第一输出排(22),位于串联回路末端的电芯(21)连接有第二输出排(23),第一输出排(22)和第二输出排(23)分别位于电池模组(20)沿第一方向的两侧,第一输出排(22)与第一接线头(111)电连接,第二输出排(23)与第二接线头(112)电连接。通过将第一接线头(111)和第二接线头(112)分开在两侧设置,将多个电池包(100)并联时,可以保证走线清晰规则,方便并联安装,且正负极之间不容易接错,减少短路风险。

Description

电池包及储能系统
本申请要求在2024年04月26日提交中国专利局、申请号为202420894107.4的中国专利申请的优先权,以上申请的全部内容通过引用结合在本申请中。
技术领域
本申请涉及储能技术领域,具体涉及一种电池包及储能系统。
背景技术
低压储能系统应用广泛,可以在家庭、工业设备、电力不稳、无电地区储能发电等多场景应用,节能优化。储能系统通常包括多个电池包,多个电池包采用纵向层叠的方式排布。
为了实现多个电池包的并机功能,相邻电池包的正极接线头通过导线连接,相邻电池包的负极接线头通过导线连接,从而实现多个电池包的并联。但是,现有的电池包,其正极接线柱和负极接线柱从同侧引出,且正极接线柱和负极接线柱邻近设置,从而导致并联接线时走线密集杂乱,后期维护不够方便,且正负极之间容易错搭短路。
技术问题
本申请提供一种电池包,能够避免电池包并联时走线密集杂乱,减少短路风险。
本申请提供一种储能系统,通过设置上述电池包,能够避免电池包并联时走线密集杂乱,便于后期维护,且减少短路风险。
解决方案
第一方面,本申请实施例提供一种电池包,包括:
箱体,其第一面板设有第一接线头和第二接线头,所述第一面板的长度方向为第一方向,所述第一接线头和所述第二接线头分别位于所述第一面板沿所述第一方向的两侧;
电池模组,设于所述箱体内,所述电池模组包括多个串联设置的电芯,位于串联回路首端的所述电芯连接有第一输出排,位于串联回路末端的所述电芯连接有第二输出排,所述第一输出排和所述第二输出排分别位于所述电池模组沿所述第一方向的两侧,所述第一输出排与所述第一接线头电连接,所述第二输出排与所述第二接线头电连接。
第二方面,本申请实施例提供一种储能系统,包括多个上述的电池包,多个所述电池包沿所述第一面板的高度方向层叠且并联设置,多个所述电池包的所述第一接线头位于同一侧且通过第一动力线连接,多个所述电池包的所述第二接线头位于同一侧且通过第二动力线连接。
有益效果
本申请提供的一种电池包,通过将第一输出排和第二输出排从电池模组沿第一方向的两侧引出,在此基础上,从而便于将第一接线头和第二接线头分别在第一面板沿第一方向的两侧引出,以使得第一输出排与第一接线头的位置对应,第二输出排与第二接线头的位置对应。由于第一接线头和第二接线头分开在两侧设置,在将多个电池包并联时,可以保证走线清晰规则,方便并联安装和后期维护,且正负极之间不容易接错,减少短路风险。
本申请提供的储能系统,通过设置上述电池包,能够避免电池包并联时走线密集杂乱,便于后期维护,且减少短路风险。
附图说明
图1是本申请实施例提供的储能系统的结构示意图;
图2是本申请实施例提供的电池包的结构示意图;
图3是本申请实施例提供的电池包省去外壳后的结构示意图;
图4是本申请实施例提供的多个电芯组装后的结构示意图;
图5是本申请实施例提供的单个电池模组的结构示意图;
图6是本申请实施例提供的两个电池模组配合的结构示意图。
图中:
100、电池包;200、第一动力线;300、第二动力线;400、通讯线;
10、箱体;11、第一面板;111、第一接线头;112、第二接线头;113、第一通讯端口;114、第二通讯端口;115、把手;12、外壳;
20、电池模组;21、电芯;211、第一电极;212、第二电极;213、首端电芯;214、末端电芯;22、第一输出排;23、第二输出排;24、中间串联排;25、端板;26、固定带;27、均温板;
30、BMS模块。
本发明的实施方式
本实施例提供一种电池包100及储能系统,如图1所示,该储能系统包括多个电池包100,多个电池包100层叠且并联设置。一可选的实施例中,如图1所示,电池包100设置为三个,在其他实施例中,根据实际的需求,还可以将电池包100设置为其他数量,在此不做限定。
如图2和图3所示,电池包100包括箱体10和设置于箱体10内的电池模组20,其中,箱体10包括外壳12和第一面板11,外壳12的一端呈开口设置,第一面板11位于外壳12的前侧且设置为封堵外壳12的开口,以形成封闭的腔体。为了便于理解,箱体10的长度方向即为前后方向,也即后文提到的第二方向,箱体10的宽度方向即为左右方向,也即后文提到的第一方向,箱体10的高度方向即为上下方向,也即后文提到的第一面板11的高度方向和第三方向。
箱体10的第一面板11上设有第一接线头111和第二接线头112,第一接线头111和第二接线头112分别位于第一面板11沿第一方向(左右方向)的两侧,第一接线头111和第二接线头112二者的其中一个为正极接头,另一个负极接头。电池模组20包括多个串联设置的电芯21,电芯21为方壳电芯,多个电芯21依次串联以形成串联回路,位于串联回路首端的电芯21连接有第一输出排22,位于串联回路末端的电芯21连接有第二输出排23,第一输出排22和第二输出排23分别位于电池模组20沿第一方向(左右方向)的两侧,第一输出排22和第二输出排23二者的其中一个为正极输出排,另一个负极输出排,且第一输出排22与第一接线头111的极性对应,第二输出排23与第二接线头112的极性对应,第一输出排22与第一接线头111电连接,第二输出排23与第二接线头112电连接,从而实现电压的输出。
通过将第一输出排22和第二输出排23分别从电池模组20的左右两侧引出,在此基础上,从而便于将第一接线头111和第二接线头112分别在第一面板11的左右两侧引出,以使得第一输出排22与第一接线头111的位置对应,第二输出排23与第二接线头112的位置对应。由于第一接线头111和第二接线头112分开在左右两侧设置,当多个电池包100沿第一面板11的高度方向层叠并联时,参考图1,多个电池包100的第一接线头111位于同一侧(左侧)且通过第一动力线200连接,多个电池包100的第二接线头112位于同一侧(右侧)且通过第二动力线300连接,从而可以保证动力线的走线清晰规则,方便并联安装和后期维护,且正负极之间不容易接错,减少短路风险。
一可选的实施例中,如图3所示,电池包100还包括电池管理系统(Battery Management System,BMS)模块30,BMS模块30设于外壳12内且靠近外壳12的开口,BMS模块30的前侧设有第一面板11,第一面板11封堵于外壳12的开口端,以形成封闭的箱体10。也就是说,构成箱体10的第一面板11为BMS模块30的第一面板11,箱体10和BMS模块30共用一个第一面板11,简化了电池包100的结构,节省了制造成本。在此基础上,第一输出排22可以通过BMS模块30内置的连接排或者线束与第一接线头111实现电连接,第二输出排23可以通过BMS模块30内置的连接排或者线束与第二接线头112实现电连接。
一可选的实施例中,如图3所示,多个电芯21平放且堆叠设置。通过将多个电芯21平放设置,便于将第一输出排22和第二输出排23分别从电池模组20的左右两侧引出。
一可选的实施例中,如图3所示,电池包100包括两组电池模组20,两组电池模组20沿第一方向(左右方向)并排设置且串联成48V系统,两个电池模组20中,左端电池模组20的左侧边设有第一输出排22,右端电池模组20的右侧边设有第二输出排23。
一可选的实施例中,如图4和图5所示,一个电池模组20中包括八个电芯21,八个电芯21沿上下方向堆叠为两层,每层中平放有四个电芯21。每个电芯21包括第一电极211和第二电极212,且第一电极211和第二电极212位于电芯21的同一侧,第一电极211和第二电极212二者的其中一个为正极,另一个负极。
在第一方向(左右方向)上,并排设置的两个电芯21朝向相反,即在左右方向上两个电芯21设有电极的一端朝向相背离的方向,且两个电芯21的第一电极211和第二电极212交错设置,即左侧电芯21的第一电极211和右侧电芯21的第二电极212位于同一侧,左侧电芯21的第二电极212和右侧电芯21的第一电极211位于同一侧,其中一个左侧的电芯21的第一电极211连接第一输出排22,其中一个右侧的电芯21的第二电极212连接第二输出排23。
在第二方向(前后方向)上相邻的两个电芯21中,前侧电芯21的第二电极212和后侧电芯21的第一电极211相邻设置。
在第三方向(上下方向)上,相邻的两个电芯21的大面贴合接触,且两个电芯21的第一电极211和第二电极212交错设置,即上侧电芯21的第一电极211和下侧电芯21的第二电极212位于同一侧,上侧电芯21的第二电极212和下侧电芯21的第一电芯21位于同一侧。
参考图3,可以使多个电芯21中,位于上层前侧的两个电芯21分别为首端电芯213和末端电芯214,首端电芯213的第一电极211上连接第一输出排22,末端电芯214的第二电极212上连接有第二输出排23,相邻两个电芯21的第一电极211和第二电极212之间通过中间串联排24实现串联连接,每个中间串联排24通过焊接、铆接等方式连接到对应的电极上。
当电池模组20设置为两组时,如图6所示,第一组电池模组20的第二输出排23与第二组电池模组20的第一输出排22连接,从而实现第一组电池模组20的末端电芯214与第二组电池模组20的首端电芯213的串联,进而实现两个电池模组20的串联。第一组电池模组20的第一输出排22和第二组电池模组20的第二输出排23分别位于左右两端,且第一组电池模组20的第一输出排22与第一接线头111通讯连接,第二组电池模组20的第二输出排23与第二接线头112通讯连接。
通过将电池模组20内的多个电芯21设置为平放且堆叠设置排布方式,便于将第一输出排22和第二输出排23分别从电池模组20的左右两端引出,从而便于将第一接线头111和第二接线头112分别在第一面板11的左右两侧引出,当多个电池包100并联时,可以保证动力线的走线清晰规则,方便并联安装和后期维护,且正负极之间不容易接错,减少短路风险。
在其他实施例中,也可以通过改变每个电池模组20内部电芯21的串联数量或者通过改变电池模组20的数量,来满足不同的电压需求。
一可选的实施例中,如图2和图3所示,第一面板11上还设有第一通讯端口113和第二通讯端口114,第一通讯端口113和第二通讯端口114沿第一面板11的高度方向(上下方向)间隔设置。参考图1,以第一通讯端口113为输入端口,第二通讯端口114为输出端口为例,其中一个电池包100的第一通讯端口113和相邻电池包100的第二通讯端口114相邻设置且通过通讯线400通讯连接且通过通讯线400实现通讯连接,最上端电池包100的第一通讯端口113和最下端电池包100的第二通讯端口114分别通过通讯线400与外部设备通讯连接,以实现与外部设备通讯的功能。因此,通过将第一通讯端口113和第二通讯端口114分列在上下两侧,可以分别对上端和下端进行级联通讯,不容易混插,走线清晰简单,方便安装。一可选的实施例中,如图4所示,在第三方向上相邻的两个电芯21之间设有均温板27,均温板27与电芯21的大面贴合接触,使得均温板27与电芯21的接触面积尽可能最大,增加有效散热面积和导热效率,加强电芯21之间的温度一致性。可选地,均温板27为铜板,导热性能较好。在实际应用中,可以直接在上下两层电芯21之间放置一整块均温板27。
一可选的实施例中,均温板27中空设置,且均温板27的内部填充有相变材料,例如铜均温板(Vapor Chamber,VC)。通过该设置,使得均温板27不仅具有均温作用,还可以吸收电芯21的膨胀力,确保电芯21的使用性能及工作寿命。
一可选的实施例中,如图5所示,电池模组20还包括两个固定带26和两个端板25,在电芯21的厚度方向(上下方向)上,两个端板25相对且间隔设置,多个电芯21位于两个端板25之间,两个固定带26分别套装在两个端板25上,以将电芯21和端板25捆扎固定,组成一体式的电池模组20,保证电池模组20的整体牢固性。固定带26可选为钢带,结构强度较高。
一可选的实施例中,为了限制固定带26的移动,端板25上设有限位槽,固定带26容置于限位槽内,以对固定带26进行限位,保证固定带26在捆扎过程中不容易移位,提高了捆扎的稳定性。
一可选的实施例中,如图2所示,第一面板11上设有把手115。通过设置把手115,可以方便电池包100的取放。
一可选的实施例中,把手115可以铰接于第一面板11上,第一面板11上还可以设有设置为容置把手115的凹槽。当把手115不使用时,可以将把手115转至凹槽内进行收纳,不影响电池包100的正常使用;当需要使用把手115时,可以将把手115从凹槽内转出,通过把手115实现电池包100的取放,使用灵活方便。

Claims (10)

  1. 一种电池包,包括:
    箱体(10),其第一面板(11)设有第一接线头(111)和第二接线头(112),所述第一面板(11)的长度方向为第一方向,所述第一接线头(111)和所述第二接线头(112)分别位于所述第一面板(11)沿所述第一方向的两侧;
    电池模组(20),设于所述箱体(10)内,所述电池模组(20)包括多个串联的电芯(21),位于串联回路首端的所述电芯(21)连接有第一输出排(22),位于串联回路末端的所述电芯(21)连接有第二输出排(23),所述第一输出排(22)和所述第二输出排(23)分别位于所述电池模组(20)沿所述第一方向的两侧,所述第一输出排(22)与所述第一接线头(111)电连接,所述第二输出排(23)与所述第二接线头(112)电连接。
  2. 根据权利要求1所述的电池包,其中,多个所述电芯(21)平放且堆叠设置。
  3. 根据权利要求2所述的电池包,其中,所述电芯(21)的厚度方向为第三方向,在所述第三方向上相邻的两个所述电芯(21)之间设有均温板(27),所述均温板(27)与相邻的两个所述电芯(21)的大面贴合接触。
  4. 根据权利要求3所述的电池包,其中,所述均温板(27)中空设置,且所述均温板(27)的内部填充有相变材料。
  5. 根据权利要求1~4任一项所述的电池包,其中,所述第一面板(11)上设有第一通讯端口(113)和第二通讯端口(114),所述第一通讯端口(113)和所述第二通讯端口(114)沿所述第一面板(11)的高度方向间隔设置。
  6. 根据权利要求1~4任一项所述的电池包,其中,所述电池模组(20)还包括固定带(26)和两个端板(25),在所述电芯(21)的厚度方向上,两个所述端板(25)相对且间隔设置,多个所述电芯(21)位于两个所述端板(25)之间,所述固定带(26)套装在两个所述端板(25)上。
  7. 根据权利要求1~4任一项所述的电池包,其中,所述电池包包括至少两组所述电池模组(20),至少两组所述电池模组(20)沿所述第一方向并排且串联设置,位于两端的所述电池模组(20)中,其中一个所述电池模组(20)设有所述第一输出排(22),另一个所述电池模组(20)设有所述第二输出排(23)。
  8. 根据权利要求1~4任一项所述的电池包,其中,所述箱体(10)还包括外壳(12),所述外壳(12)的一端呈开口设置;
    所述电池包还包括电池管理系统BMS模块(30),所述BMS模块(30)设于所述外壳(12)内且靠近所述外壳(12)的开口,所述BMS模块(30)设有所述第一面板(11),所述第一面板(11)封堵于所述外壳(12)的开口端,以形成封闭的所述箱体(10)。
  9. 一种储能系统,包括多个如权利要求1~8任一项所述的电池包,多个所述电池包沿所述第一面板(11)的高度方向层叠且并联设置,多个所述电池包的所述第一接线头(111)位于同一侧且通过第一动力线(200)连接,多个所述电池包的所述第二接线头(112)位于同一侧且通过第二动力线(300)连接。
  10. 根据权利要求9所述的储能系统,其中,所述第一面板(11)上设有第一通讯端口(113)和第二通讯端口(114),所述第一通讯端口(113)和所述第二通讯端口(114)沿所述第一面板(11)的高度方向间隔设置;
    其中,一个所述电池包的所述第一通讯端口(113)和相邻所述电池包的所述第二通讯端口(114)相邻设置且通过通讯线(400)通讯连接。
PCT/CN2024/099825 2024-04-26 2024-06-18 电池包及储能系统 Pending WO2024255914A1 (zh)

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