CN109904378B - Lithium battery energy storage module and lithium battery energy storage module - Google Patents
Lithium battery energy storage module and lithium battery energy storage module Download PDFInfo
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- 238000004146 energy storage Methods 0.000 title claims abstract description 181
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 139
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 136
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 90
- 229910052802 copper Inorganic materials 0.000 claims description 90
- 239000010949 copper Substances 0.000 claims description 90
- 230000001681 protective effect Effects 0.000 claims description 28
- 238000009434 installation Methods 0.000 claims description 11
- 210000005069 ears Anatomy 0.000 abstract description 11
- 238000013021 overheating Methods 0.000 abstract description 2
- 210000004027 cell Anatomy 0.000 description 116
- 238000010586 diagram Methods 0.000 description 11
- 238000003466 welding Methods 0.000 description 7
- 230000020169 heat generation Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 101000827703 Homo sapiens Polyphosphoinositide phosphatase Proteins 0.000 description 2
- 102100023591 Polyphosphoinositide phosphatase Human genes 0.000 description 2
- 101100012902 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) FIG2 gene Proteins 0.000 description 2
- 101100233916 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) KAR5 gene Proteins 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 101001121408 Homo sapiens L-amino-acid oxidase Proteins 0.000 description 1
- 102100026388 L-amino-acid oxidase Human genes 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 210000005056 cell body Anatomy 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 150000002641 lithium Chemical class 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- 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
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- 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
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- Connection Of Batteries Or Terminals (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
本发明属于电池产品技术领域，尤其涉及一种锂电池储能模块及锂电池储能模组。其中，锂电池储能模块包括电芯、电芯支架和汇流排，电芯的极耳固定于电芯支架的极耳固定部上；汇流排包括第一汇流板、第二汇流板及连接板，第一汇流板和第二汇流板分别与安装于电芯支架上的电芯的极耳焊接，连接板与极耳固定部固定连接。如此，设置专门的汇流排用于串联或者并联电芯支架上的各电芯，通过控制第一汇流板和第二汇流板的尺寸即可合理的设置电芯汇流时的电接触面积，从而确保电芯之间的有效电接触面积，防止锂电池储能模块过热造成能量损失，有利于实现储能模块的良好的热管控，同时提高储能模组的储能使用效率。
The present invention belongs to the technical field of battery products, and in particular, relates to a lithium battery energy storage module and a lithium battery energy storage module. Among them, the lithium battery energy storage module includes a battery cell, a battery cell bracket and a busbar, and the pole ear of the battery cell is fixed on the pole ear fixing part of the battery cell bracket; the busbar includes a first busbar, a second busbar and a connecting plate, and the first busbar and the second busbar are respectively welded to the pole ears of the battery cell installed on the battery cell bracket, and the connecting plate is fixedly connected to the pole ear fixing part. In this way, a special busbar is set for connecting the batteries on the battery cell bracket in series or in parallel, and the electrical contact area of the battery cells when they are connected can be reasonably set by controlling the size of the first busbar and the second busbar, thereby ensuring the effective electrical contact area between the battery cells, preventing the lithium battery energy storage module from overheating and causing energy loss, which is conducive to achieving good thermal control of the energy storage module, and at the same time improving the energy storage efficiency of the energy storage module.
Description
技术领域Technical Field
本发明属于电池产品技术领域，尤其涉及一种锂电池储能模块及锂电池储能模组。The present invention belongs to the technical field of battery products, and in particular relates to a lithium battery energy storage module and a lithium battery energy storage module group.
背景技术Background technique
自1990年问世以来，锂离子电池因其能量密度高、电压高、环保、寿命长以及可快速充电等优点，深受3C数码、动力工具等行业的追捧，特别是对新能源汽车行业的贡献尤为突出。Since its introduction in 1990, lithium-ion batteries have been highly sought after by industries such as 3C digital and power tools due to their high energy density, high voltage, environmental protection, long life and fast charging, especially their contribution to the new energy vehicle industry.
众所周知，锂电池单体的储能量有限，单独使用时往往不能满足电能产品的供电需求，通过将几颗到数百颗锂电池单体电芯串并联组成一个或多个电池模组，如此，便可将多个锂电池的电能汇集整合到一起输出，便可大大提升锂电池的储能及供能量，满足产品的用电需求。通过多个电芯串并连组成电池模组获得高电能容量的方式虽然解决了电能产品的大电量集中供电需求，但是由于集中串并联的单体电芯数量较多，相应的用于串并联的电连接片的数量也相对较多，电连接片设计不合理往往会导致各电芯之间的有效接触面积减少，从而导致连接处阻值增大，电池模组在通电工作时会在大阻值的电连接片处会产生大量的热，导致能量损失，不利于电池模组的储能热管控，使电池模组的储能使用效率大大降低，缩短电池模组的使用寿命，严重时还会使整个应用电池模组的系统温度过高引发安全问题。As we all know, the energy storage capacity of lithium battery cells is limited. When used alone, it often cannot meet the power supply needs of electric energy products. By connecting several to hundreds of lithium battery cells in series and parallel to form one or more battery modules, the power of multiple lithium batteries can be integrated and output together, which can greatly improve the energy storage and supply of lithium batteries and meet the power demand of products. Although the method of obtaining high power capacity by connecting multiple cells in series and parallel to form a battery module solves the large-scale centralized power supply needs of electric energy products, due to the large number of concentrated series and parallel single cells, the corresponding number of electrical connectors used for series and parallel is also relatively large. The unreasonable design of the electrical connector often leads to a reduction in the effective contact area between the cells, thereby increasing the resistance at the connection. When the battery module is powered on, a large amount of heat will be generated at the large-resistance electrical connector, resulting in energy loss, which is not conducive to the thermal control of the energy storage of the battery module, greatly reducing the energy storage efficiency of the battery module, shortening the service life of the battery module, and in severe cases, causing the system temperature of the entire application battery module to be too high, causing safety problems.
发明内容Summary of the invention
本发明的目的在于提供一种锂电池储能模块及锂电池储能模组，旨在解决现有技术中的锂电池储能模块或模组的电连接片设计不合理导致各电芯之间有效电接触面积减小从而导致储能模块或者储能模组产热过多的技术问题。The purpose of the present invention is to provide a lithium battery energy storage module and a lithium battery energy storage module, aiming to solve the technical problem that the unreasonable design of the electrical connecting piece of the lithium battery energy storage module or module in the prior art leads to a reduction in the effective electrical contact area between the battery cells, thereby causing the energy storage module or the energy storage module to generate excessive heat.
为实现上述目的，本发明采用的技术方案是：一种锂电池储能模块，包括：To achieve the above object, the technical solution adopted by the present invention is: a lithium battery energy storage module, comprising:
电芯；Batteries;
电芯支架，用于安装固定电芯，电芯支架具有相对设置且用于安装电芯的第一安装面和第二安装面，电芯支架的端部朝背离第一安装面/第二安装面的方向延伸形成有极耳固定部，第一安装面内安装的电芯的极耳延伸出第一安装面并固定于极耳固定部的上表面，第二安装面内安装的电芯的极耳延伸出第二安装面并固定于极耳固定部的下表面；A cell holder, used for mounting and fixing the cell, the cell holder having a first mounting surface and a second mounting surface which are arranged opposite to each other and used for mounting the cell, an end of the cell holder extending in a direction away from the first mounting surface/the second mounting surface to form a tab fixing portion, the tab of the cell mounted in the first mounting surface extending out of the first mounting surface and fixed to the upper surface of the tab fixing portion, and the tab of the cell mounted in the second mounting surface extending out of the second mounting surface and fixed to the lower surface of the tab fixing portion;
汇流排，用于电性连接电芯支架上安装的各电芯，汇流排包括平行设置的第一汇流板、第二汇流板以及连接于第一汇流板和第二汇流板相邻端部之间的连接板，第一汇流板与安装于第一安装面内的电芯的极耳焊接，第二汇流板与安装于第二安装面内的电芯的极耳焊接，连接板与极耳固定部固定连接。A busbar is used to electrically connect the battery cells installed on the battery cell bracket. The busbar includes a first busbar and a second busbar arranged in parallel, and a connecting plate connected between adjacent ends of the first busbar and the second busbar. The first busbar is welded to the tabs of the battery cells installed in the first mounting surface, and the second busbar is welded to the tabs of the battery cells installed in the second mounting surface. The connecting plate is fixedly connected to the tab fixing portion.
优选地，第一汇流板盖设于第一安装面内安装的电芯的极耳的上表面，第二汇流板盖设于第二安装面内安装的电芯的极耳的下表面；且第一汇流板和第二汇流板的横截面积均大于或等于与之对应的极耳的横截面积。Preferably, the first busbar cover is arranged on the upper surface of the pole lug of the battery cell installed in the first mounting surface, and the second busbar cover is arranged on the lower surface of the pole lug of the battery cell installed in the second mounting surface; and the cross-sectional areas of the first busbar and the second busbar are both greater than or equal to the cross-sectional areas of the corresponding pole lugs.
优选地，极耳固定部背离第一安装面/第二安装面的端部开设有若干第一连接孔，连接板上开设有若干与第一连接孔相对应的第二连接孔，连接板通过第一紧固件与极耳固定部固定连接，第一紧固件的一端穿出第二连接孔后固定于对应的第一连接孔内。Preferably, a plurality of first connecting holes are provided at the end of the pole lug fixing portion facing away from the first mounting surface/second mounting surface, a plurality of second connecting holes corresponding to the first connecting holes are provided on the connecting plate, the connecting plate is fixedly connected to the pole lug fixing portion by a first fastener, and one end of the first fastener passes through the second connecting hole and is fixed in the corresponding first connecting hole.
优选地，电芯支架为塑料支架，汇流排为铜制汇流排。Preferably, the battery cell support is a plastic support, and the busbar is a copper busbar.
优选地，锂电池储能模块还包括用于保护电芯的上保护盖板和下保护盖板，上保护盖板封盖于第一安装面的上方并与电芯支架围设形成第一安装空间，下保护盖板封盖于第二安装面的下方并与电芯支架围设形成第二安装空间，电芯封装于第一安装空间和/或第二安装空间内。Preferably, the lithium battery energy storage module also includes an upper protective cover and a lower protective cover for protecting the battery cells. The upper protective cover is sealed above the first mounting surface and is arranged with the battery cell holder to form a first mounting space. The lower protective cover is sealed below the second mounting surface and is arranged with the battery cell holder to form a second mounting space. The battery cells are encapsulated in the first mounting space and/or the second mounting space.
本发明的有益效果：本发明的锂电池储能模块，其设置有专门用于安装电芯的电芯支架和用于电性连接电芯支架上安装的各个电芯的汇流排，具体地，电芯支架具有相对设置的第一安装面和第二安装面，电芯安装固定于第一安装面和第二安装面内；电芯支架背离第一安装面/第二安装面的端部还延伸形成有极耳固定部，安装于电芯支架的第一安装面和第二安装面上的电芯的极耳分别固定于极耳固定部的上表面和下表面，汇流排与极耳固定部固定连接；汇流排具有相对设置的第一汇流板和第二汇流板，其中，第一汇流板与第一安装面内的电芯的极耳焊接，第二汇流板与第二安装面内的电芯的极耳焊接，以汇集电芯支架上的电芯的电流。如此，设置专门的汇流排用于串联或者并联电芯支架上的各电芯，通过控制汇流排的第一汇流板和第二汇流板的尺寸大小即可合理的设置电芯汇流时的电接触面积，从而能够确保电芯与电芯之间的有效电接触面积，避免因有效电接触面积的减小而导致电连接位置处阻值过大而产生大量的热，防止锂电池储能模块的能量损失，有利于实现储能模块的良好的热管控，同时提高储能模块的储能使用效率。Beneficial effects of the present invention: The lithium battery energy storage module of the present invention is provided with a cell bracket specifically used for installing cell and a busbar for electrically connecting the cell mounted on the cell bracket. Specifically, the cell bracket has a first mounting surface and a second mounting surface arranged opposite to each other, and the cell is mounted and fixed in the first mounting surface and the second mounting surface; the end of the cell bracket away from the first mounting surface/the second mounting surface is also extended to form a pole ear fixing portion, and the pole ears of the cell mounted on the first mounting surface and the second mounting surface of the cell bracket are respectively fixed to the upper surface and the lower surface of the pole ear fixing portion, and the busbar is fixedly connected to the pole ear fixing portion; the busbar has a first busbar and a second busbar arranged opposite to each other, wherein the first busbar is welded to the pole ears of the cell in the first mounting surface, and the second busbar is welded to the pole ears of the cell in the second mounting surface, so as to collect the current of the cell on the cell bracket. In this way, a special bus is set up for connecting the battery cells on the battery cell holder in series or in parallel. The electrical contact area of the battery cells during bus connection can be reasonably set by controlling the sizes of the first bus plate and the second bus plate of the bus, thereby ensuring the effective electrical contact area between the battery cells, avoiding excessive resistance at the electrical connection position due to the reduction of the effective electrical contact area and generating a large amount of heat, preventing energy loss of the lithium battery energy storage module, and being conducive to achieving good thermal management and control of the energy storage module, while improving the energy storage efficiency of the energy storage module.
本发明的另一技术方案是：一种锂电池储能模组，包括若干上述锂电池储能模块和若干用于电性连接各锂电池储能模块的电连接铜片，各锂电池储能模块上下或者左右堆叠设置，各电连接铜片分别与各锂电池储能模块上相邻的汇流排固定连接。Another technical solution of the present invention is: a lithium battery energy storage module, comprising a plurality of the above-mentioned lithium battery energy storage modules and a plurality of electrical connection copper sheets for electrically connecting the lithium battery energy storage modules, the lithium battery energy storage modules are stacked up and down or left and right, and the electrical connection copper sheets are respectively fixedly connected to adjacent buses on the lithium battery energy storage modules.
优选地，电连接铜片包括若干用于串联各锂电池储能模块的串联铜片和若干用于并联各锂电池储能模块的并联铜片，各串联铜片和各并联铜片均通过第二紧固件与各汇流排的连接板固定连接。Preferably, the electrically connecting copper sheets include several series copper sheets for connecting the lithium battery energy storage modules in series and several parallel copper sheets for connecting the lithium battery energy storage modules in parallel, and each series copper sheet and each parallel copper sheet are fixedly connected to the connecting plate of each busbar through a second fastener.
优选地，串联铜片包括直板串联铜片和折板串联铜片，锂电池储能模块包括分别由若干锂电池储能模块组成的第一储能模组件和第二储能模组件；Preferably, the series-connected copper sheets include straight-plate series-connected copper sheets and folded-plate series-connected copper sheets, and the lithium battery energy storage module includes a first energy storage module assembly and a second energy storage module assembly each consisting of a plurality of lithium battery energy storage modules;
第一储能模组件的各汇流排设置于同一平面内，第二储能模组件的各汇流排设置于同一平面内，并联铜片和直板串联铜片分别与位于同一平面内的各汇流排连接；The busbars of the first energy storage module assembly are arranged in the same plane, the busbars of the second energy storage module assembly are arranged in the same plane, and the parallel copper sheets and the straight plate series copper sheets are respectively connected to the busbars located in the same plane;
第一储能模组件设置有汇流排的平面与第二储能模组件设置有汇流排的平面相对设置，折板串联铜片包括平行设置的第一直板部、第二直板部以及连接于第一直板部和第二直板部相邻端部之间的连接部，第一直板部与第一储能模组件上的汇流排连接，第二直板部与第二储能模组件上的汇流排连接。The plane on which the bus is arranged in the first energy storage module assembly is arranged opposite to the plane on which the bus is arranged in the second energy storage module assembly. The folded plate series copper sheet includes a first straight plate portion, a second straight plate portion and a connecting portion connected between adjacent ends of the first straight plate portion and the second straight plate portion, the first straight plate portion is connected to the bus on the first energy storage module assembly, and the second straight plate portion is connected to the bus on the second energy storage module assembly.
优选地，锂电池储能模组还包括用于组装连接各锂电池储能模块的若干压条，各压条分别与各电芯支架连接以将各锂电池储能模块连接组装在一起。Preferably, the lithium battery energy storage module further comprises a plurality of pressure strips for assembling and connecting the lithium battery energy storage modules, and each pressure strip is respectively connected to each battery cell bracket to connect and assemble the lithium battery energy storage modules together.
优选地，电连接铜片由厚度为0.5mm～2mm的紫铜片冲压制成。Preferably, the electrical connection copper sheet is made by stamping a copper sheet with a thickness of 0.5 mm to 2 mm.
本发明的锂电池储能模组，包括多个堆叠设置的上述的锂电池储能模块，且通过电连接铜片电性连接各锂电池储能模块上的汇流排，即可实现各个锂电池储能模块之间的电流汇集，如此，在设置汇流排保证单个锂电池储能模块的电连接接触面积的基础上，通过设计和控制电连接铜片的尺寸大小可以进一步的保证各个锂电池储能模块之间汇流时的电接触面积，确保各锂电池储能模块串并联处的有效电接触面积，降低阻值、减少发热，从而实现对锂电池储能模组的有效热管控；此外，采用电连接铜片连接各锂电池储能模块的汇流排即可实现各个锂电池储能模组的串并联汇流，结构简单，组装操作简便。The lithium battery energy storage module of the present invention comprises a plurality of the above-mentioned lithium battery energy storage modules which are stacked and arranged, and the busbars on each lithium battery energy storage module are electrically connected by an electrically connecting copper sheet, so that current convergence between each lithium battery energy storage module can be achieved. Thus, on the basis of setting a busbar to ensure the electrical connection contact area of a single lithium battery energy storage module, the electrical contact area during convergence between each lithium battery energy storage module can be further guaranteed by designing and controlling the size of the electrically connecting copper sheet, thereby ensuring the effective electrical contact area at the serial and parallel connection of each lithium battery energy storage module, reducing resistance and heat generation, and thus achieving effective heat control of the lithium battery energy storage module; in addition, the serial and parallel convergence of each lithium battery energy storage module can be achieved by connecting the busbars of each lithium battery energy storage module with an electrically connecting copper sheet, and the structure is simple and the assembly operation is easy.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例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，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.
图1为本发明实施例提供的锂电池储能模组的结构示意图一；FIG1 is a structural schematic diagram 1 of a lithium battery energy storage module provided by an embodiment of the present invention;
图2为本发明实施例提供的锂电池储能模组的结构示意图二；FIG2 is a second structural schematic diagram of a lithium battery energy storage module provided in an embodiment of the present invention;
图3为本发明实施例提供的锂电池储能模组的结构示意图三；FIG3 is a third structural schematic diagram of a lithium battery energy storage module provided in an embodiment of the present invention;
图4为本发明实施例提供的锂电池储能模块的结构示意图；FIG4 is a schematic diagram of the structure of a lithium battery energy storage module provided in an embodiment of the present invention;
图5为本发明实施例提供的锂电池储能模块的局部分解示图；FIG5 is a partial exploded view of a lithium battery energy storage module provided by an embodiment of the present invention;
图6为本发明实施例提供的锂电池储能模块的电芯支架的结构示意图；FIG6 is a schematic structural diagram of a cell support of a lithium battery energy storage module provided in an embodiment of the present invention;
图7为本发明实施例提供的锂电池储能模块的电芯的结构示意图；FIG7 is a schematic diagram of the structure of a cell of a lithium battery energy storage module provided in an embodiment of the present invention;
图8为本发明实施例提供的锂电池储能模组的并联铜片的结构示意图；FIG8 is a schematic structural diagram of parallel copper sheets of a lithium battery energy storage module provided in an embodiment of the present invention;
图9为本发明实施例提供的锂电池储能模组的直板串联铜片的结构示意图；FIG9 is a schematic diagram of the structure of a straight copper plate connected in series in a lithium battery energy storage module according to an embodiment of the present invention;
图10为本发明实施例提供的锂电池储能模组的折板串联铜片的结构示意图；FIG10 is a schematic structural diagram of a folded plate series-connected copper sheet of a lithium battery energy storage module provided by an embodiment of the present invention;
图11为图3中A的放大图。FIG. 11 is an enlarged view of A in FIG. 3 .
其中，图中各附图标记：Among them, the reference numerals in the figure are:
1—锂电池储能模块 2—锂电池储能模组 10—电芯1—Lithium battery energy storage module 2—Lithium battery energy storage module 10—Battery cell
11—极耳 20—电芯支架 21—第一安装面11—Pole ear 20—Cell support 21—First mounting surface
22—第二安装面 23—极耳固定部 24—第一连接孔22—Second mounting surface 23—Electrode tab fixing portion 24—First connecting hole
25—第三连接孔 26—支撑条 30—汇流排25—third connection hole 26—support bar 30—busbar
31—第一汇流板 32—第二汇流板 33—连接板31—First busbar 32—Second busbar 33—Connecting plate
40—上保护盖板 41—第四连接孔 42—第二紧固件40—upper protective cover 41—fourth connecting hole 42—second fastener
43—散热孔 50—下保护盖板 60—电连接铜片43—Heat dissipation hole 50—Lower protective cover 60—Electrical connection copper sheet
61—串联铜片 62—并联铜片 63—第五连接孔61—Series copper sheet 62—Parallel copper sheet 63—Fifth connection hole
64—第三紧固件 70—压条 71—直形压条64—third fastener 70—pressing strip 71—straight press strip
72—异形压条 331—第二连接孔 201—第一储能模组件72—Special-shaped bead 331—Second connecting hole 201—First energy storage module
202—第二储能模组件 611—直板串联铜片 612—折板串联铜片202—Second energy storage module 611—Straight plates connected in series with copper sheets 612—Folding plates connected in series with copper sheets
6121—第一直板部 6122—第二直板部 6133—连接部。6121—first straight plate portion 6122—second straight plate portion 6133—connecting portion.
具体实施方式Detailed ways
下面详细描述本发明的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图1～11描述的实施例是示例性的，旨在用于解释本发明，而不能理解为对本发明的限制。Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to Figures 1 to 11 are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.
在本发明的描述中，需要理解的是，术语“长度”、“宽度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”“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发明和简化描述，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发明的限制。In the description of the present invention, it is necessary to understand that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者更多个该特征。在本发明的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.
在本发明中，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“固定”等术语应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或成一体；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或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本发明中的具体含义。In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like 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 an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
如图1～11所示，本发明的一实施例提供了一种锂电池储能模块1，适用于对单头双极耳软包锂电电芯的串并联汇流，具体地，如图4～10所示，锂电池储能模块1包括电芯10、电芯支架20和汇流排30，其中，电芯支架20用于安装固定电芯10，汇流排30用于电性连接电芯支架20上安装的各电芯10；具体地，电芯支架20具有相对设置且用于安装电芯10的第一安装面21和第二安装面22，电芯支架20的端部朝背离第一安装面21/第二安装面22的方向延伸形成有极耳固定部23，第一安装面21内安装的电芯10的极耳11延伸出第一安装面21并固定于极耳固定部23的上表面，第二安装面22内安装的电芯10的极耳11延伸出第二安装面22并固定于极耳固定部23的下表面；汇流排30包括平行设置的第一汇流板31、第二汇流板32以及连接于第一汇流板31和第二汇流板32相邻端部之间的连接板33，第一汇流板31与安装于第一安装面21内的电芯10的极耳11焊接，第二汇流板32与安装于第二安装面22内的电芯10的极耳11焊接，连接板33与极耳固定部23固定连接。在一些具体的实施例中，同一个电芯支架20上一般连接有两个汇流排30，用于连接单头双极耳软包锂电电芯的左右两个极耳11，如图5和图7所示。As shown in FIGS. 1 to 11, an embodiment of the present invention provides a lithium battery energy storage module 1, which is suitable for series-parallel busing of single-head double-pole ear soft-pack lithium battery cells. Specifically, as shown in FIGS. 4 to 10, the lithium battery energy storage module 1 includes a battery cell 10, a battery cell holder 20 and a bus bar 30, wherein the battery cell holder 20 is used to install and fix the battery cell 10, and the bus bar 30 is used to electrically connect the battery cells 10 installed on the battery cell holder 20; specifically, the battery cell holder 20 has a first mounting surface 21 and a second mounting surface 22 which are arranged opposite to each other and are used to install the battery cell 10, and the end of the battery cell holder 20 extends in a direction away from the first mounting surface 21/the second mounting surface 22 to form a pole ear fixing portion 23, and the first mounting surface The tabs 11 of the battery cell 10 installed in the first mounting surface 21 extend out of the first mounting surface 21 and are fixed to the upper surface of the tab fixing portion 23, and the tabs 11 of the battery cell 10 installed in the second mounting surface 22 extend out of the second mounting surface 22 and are fixed to the lower surface of the tab fixing portion 23; the busbar 30 includes a first busbar 31, a second busbar 32 arranged in parallel, and a connecting plate 33 connected between the adjacent ends of the first busbar 31 and the second busbar 32, the first busbar 31 is welded to the tabs 11 of the battery cell 10 installed in the first mounting surface 21, the second busbar 32 is welded to the tabs 11 of the battery cell 10 installed in the second mounting surface 22, and the connecting plate 33 is fixedly connected to the tab fixing portion 23. In some specific embodiments, two busbars 30 are generally connected to the same battery cell bracket 20, which are used to connect the left and right tabs 11 of the single-head double-pole tab soft-pack lithium battery cell, as shown in Figures 5 and 7.
本发明实施例的锂电池储能模块1，其设置有专门用于安装电芯10的电芯支架20和用于电性连接电芯支架20上安装的各个电芯10的汇流排30，具体地，电芯支架20具有相对设置的第一安装面21和第二安装面22，电芯10安装固定于第一安装面21和第二安装面22内；电芯支架20背离第一安装面21/第二安装面22的端部还延伸形成有极耳固定部23，安装于电芯支架20的第一安装面21和第二安装面22上的电芯10的极耳11分别固定于极耳固定部23的上表面和下表面，汇流排30与极耳固定部23固定连接，且汇流排30具有相对设置的第一汇流板31和第二汇流板32，其中，第一汇流板31与第一安装面21内的电芯10的极耳11焊接，第二汇流板32与第二安装面22内的电芯10的极耳11焊接，以汇集电芯支架20上的电芯10的电流。如此，设置专门的汇流排30用于串联或者并联电芯支架20上的各电芯10，通过控制汇流排30的第一汇流板31和第二汇流板32的尺寸大小即可合理的设置电芯10汇流时的电接触面积，从而能够确保电芯10与电芯10之间的有效电接触面积，避免因有效电接触面积的减小而导致电连接位置处阻值过大而产生大量的热，防止锂电池储能模块1的能量损失，有利于实现储能模块的良好的热管控，同时提高储能模块的储能使用效率。The lithium battery energy storage module 1 of the embodiment of the present invention is provided with a cell holder 20 specifically used for mounting the cell 10 and a bus bar 30 for electrically connecting the cells 10 mounted on the cell holder 20. Specifically, the cell holder 20 has a first mounting surface 21 and a second mounting surface 22 arranged opposite to each other, and the cell 10 is mounted and fixed in the first mounting surface 21 and the second mounting surface 22; the end of the cell holder 20 away from the first mounting surface 21/the second mounting surface 22 is also extended to form a pole ear fixing portion 23, which is mounted on the cell holder 20 The tabs 11 of the battery cells 10 on the first mounting surface 21 and the second mounting surface 22 are respectively fixed to the upper surface and the lower surface of the tab fixing portion 23, the busbar 30 is fixedly connected to the tab fixing portion 23, and the busbar 30 has a first busbar 31 and a second busbar 32 arranged opposite to each other, wherein the first busbar 31 is welded to the tabs 11 of the battery cells 10 in the first mounting surface 21, and the second busbar 32 is welded to the tabs 11 of the battery cells 10 in the second mounting surface 22, so as to collect the current of the battery cells 10 on the battery cell holder 20. In this way, a special bus bar 30 is provided for connecting the battery cells 10 on the battery cell holder 20 in series or in parallel. By controlling the size of the first bus plate 31 and the second bus plate 32 of the bus bar 30, the electrical contact area of the battery cells 10 during the convergence can be reasonably set, thereby ensuring the effective electrical contact area between the battery cells 10 and the battery cells 10, avoiding the generation of a large amount of heat due to excessive resistance at the electrical connection position due to the reduction of the effective electrical contact area, preventing energy loss of the lithium battery energy storage module 1, and being conducive to achieving good thermal management of the energy storage module, while improving the energy storage efficiency of the energy storage module.
具体地，安装于第一安装面21内的电芯10的极耳11与第一汇流板31采用激光焊接或者点焊机焊接，同样的，安装于第二安装面22内的电芯0的极耳11与第二汇流板32采用激光焊接或者点焊机焊接；采用激光焊接或者点焊机焊接具有焊接操作简单、焊接速度快，且焊接强度高，密封性好等的优点，有利于提高锂电池储能模块1的组装效率。Specifically, the tab 11 of the battery cell 10 installed in the first mounting surface 21 is welded to the first busbar 31 by laser welding or a spot welder. Similarly, the tab 11 of the battery cell 0 installed in the second mounting surface 22 is welded to the second busbar 32 by laser welding or a spot welder. Laser welding or spot welding has the advantages of simple welding operation, fast welding speed, high welding strength, good sealing, etc., which is beneficial to improving the assembly efficiency of the lithium battery energy storage module 1.
在本发明的另一实施例中，如图4～7所示，第一汇流板31盖设于第一安装面21内安装的电芯10的极耳11的上表面，第二汇流板32盖设于第二安装面22内安装的电芯10的极耳11的下表面，具体地，安装于第一安装面21内的电芯10其极耳11贴设于极耳固定部23的上表面，第一汇流板31焊接贴设于该极耳11背离极耳固定部23的上表面，安装于第二安装面22内的电芯10的极耳11贴设于极耳固定部23的下表面，第二汇流板32焊接贴设于该极耳11背离极耳固定部23的下表面，如此，极耳11的尺寸大小即决定了其与汇流排30之间的电接触面积的大小，整个极耳11均与汇流排30电性接触，此时，电接触面积最大，阻值最小。具体地，本实施例中，一般用温升衡量，在电流大小相同条件下，根据P＝I2*R可知(其中，P表示功率、I表示电流、R表示电阻。)，R越大，发热功率越大，而R与电接触面积成反比关系，现本实施例汇流排30的第一汇流板31和第二汇流板32分别焊接贴设于对应电芯10的极耳11表面，极耳11整体与汇流排30连接，相当于提供了电连接时的最大电接触面积，使电连接位置处的R值变小，从而可以改变本实施例的锂电池储能模块1汇流时的发热功率。In another embodiment of the present invention, as shown in Figures 4 to 7, the first busbar 31 covers the upper surface of the pole lug 11 of the battery cell 10 installed in the first mounting surface 21, and the second busbar 32 covers the lower surface of the pole lug 11 of the battery cell 10 installed in the second mounting surface 22. Specifically, the pole lug 11 of the battery cell 10 installed in the first mounting surface 21 is attached to the upper surface of the pole lug fixing portion 23, and the first busbar 31 is welded and attached to the upper surface of the pole lug 11 away from the pole lug fixing portion 23, and the pole lug 11 of the battery cell 10 installed in the second mounting surface 22 is attached to the lower surface of the pole lug fixing portion 23, and the second busbar 32 is welded and attached to the lower surface of the pole lug 11 away from the pole lug fixing portion 23. In this way, the size of the pole lug 11 determines the size of the electrical contact area between it and the busbar 30, and the entire pole lug 11 is in electrical contact with the busbar 30. At this time, the electrical contact area is maximized and the resistance is minimized. Specifically, in this embodiment, temperature rise is generally used as a measure. Under the condition of the same current size, according to P=I 2 *R (where P represents power, I represents current, and R represents resistance), the larger R is, the greater the heat generation power is, and R is inversely proportional to the electrical contact area. Now, the first busbar 31 and the second busbar 32 of the busbar 30 of this embodiment are respectively welded and attached to the surface of the pole ear 11 of the corresponding battery cell 10, and the pole ear 11 is connected to the busbar 30 as a whole, which is equivalent to providing the maximum electrical contact area during electrical connection, so that the R value at the electrical connection position becomes smaller, thereby changing the heat generation power of the lithium battery energy storage module 1 of this embodiment during convergence.
优选地，第一汇流板31和第二汇流板32的横截面积均大于或等于与之对应的极耳11的横截面积，即第一汇流板31的横截面积大于第一安装面21内的电芯10的极耳11的横截面积、第二汇流板32的横截面积大于第二安装面22内的电芯10的极耳11的横截面积；如此，以确保电芯10的极耳11能够完全贴合至第一汇流板31/第二汇流板32上，提供最大的电接触面积，同时，第一汇流板31和第二汇流板32的横截面积均大于对应电芯10的极耳11的横截面积，相当于增大了电接触位置的散热面积，能够更为有效的防止电接触位置处出现高温过热。Preferably, the cross-sectional areas of the first busbar 31 and the second busbar 32 are both greater than or equal to the cross-sectional areas of the corresponding pole ears 11, that is, the cross-sectional area of the first busbar 31 is greater than the cross-sectional area of the pole ears 11 of the battery cells 10 in the first mounting surface 21, and the cross-sectional area of the second busbar 32 is greater than the cross-sectional area of the pole ears 11 of the battery cells 10 in the second mounting surface 22; in this way, it is ensured that the pole ears 11 of the battery cells 10 can be completely attached to the first busbar 31/the second busbar 32 to provide the maximum electrical contact area. At the same time, the cross-sectional areas of the first busbar 31 and the second busbar 32 are both greater than the cross-sectional areas of the pole ears 11 of the corresponding battery cells 10, which is equivalent to increasing the heat dissipation area of the electrical contact position, and can more effectively prevent high temperature overheating at the electrical contact position.
在本发明的另一实施例中，如图4和图5所示，极耳固定部23背离第一安装面21/第二安装面22的端部开设有若干第一连接孔24，连接板33上开设有若干与第一连接孔24相对应的第二连接孔331，连接板33通过第一紧固件(图未示)如螺钉等与极耳固定部23固定连接，第一紧固件的一端穿出第二连接孔331后固定于对应的第一连接孔24内；组装本实施例中的锂电池储能模块1时，先将电芯10安装固定于第一安装面21和/或第二安装面22内，随后再将汇流排30插接至电芯支架20的极耳11固定端上并拧紧第一紧固件即可，组装操作十分方便。In another embodiment of the present invention, as shown in Figures 4 and 5, a plurality of first connection holes 24 are provided at the end of the pole ear fixing portion 23 away from the first mounting surface 21/the second mounting surface 22, and a plurality of second connection holes 331 corresponding to the first connection holes 24 are provided on the connecting plate 33. The connecting plate 33 is fixedly connected to the pole ear fixing portion 23 by a first fastener (not shown) such as a screw, and one end of the first fastener passes through the second connection hole 331 and is fixed in the corresponding first connection hole 24. When assembling the lithium battery energy storage module 1 in this embodiment, the battery cell 10 is first installed and fixed in the first mounting surface 21 and/or the second mounting surface 22, and then the bus bar 30 is plugged into the fixed end of the pole ear 11 of the battery cell holder 20 and the first fastener is tightened, and the assembly operation is very convenient.
在本发明的另一实施例中，电芯支架20为塑料支架，以确保第一安装面21和第二安装面22内安装的两电芯10的电芯主体(除极耳11以外的位置)电性绝缘，避免发生短路；汇流排30为铜制汇流排30，以确保第一安装面21和第二安装面22内安装的两电芯10的极耳11之间电性导通。In another embodiment of the present invention, the battery cell holder 20 is a plastic holder to ensure that the battery cell bodies (except the positions of the pole ears 11) of the two battery cells 10 installed in the first mounting surface 21 and the second mounting surface 22 are electrically insulated to avoid short circuit; the bus 30 is a copper bus 30 to ensure electrical conduction between the pole ears 11 of the two battery cells 10 installed in the first mounting surface 21 and the second mounting surface 22.
在本发明的另一实施例中，如图6所示，电芯支架20为中部镂空的框形塑料支架，框形塑料支架的上表面和下表面为对应的第一安装面21和第二安装面22，电芯10安装于电芯支架20上时，其对应嵌装于框形塑料支架的上表面和下表面内；并且，框形塑料支架中部的镂空位置处还交叉设置有至少两根塑料支撑条26，用于支撑和电性隔离第一安装面21和第二安装面22内安装的电芯10。如此，使用中部镂空的框形塑料支架固定电芯10，绝缘性好，使用安全，并且还能明显降低电芯10之间发生短路的风险，质量有保障，且整体质量较轻，后续再PACK中进行组装方便，有利于提升组装效率、节省组装时间。In another embodiment of the present invention, as shown in FIG6 , the battery cell holder 20 is a frame-shaped plastic holder with a hollowed-out middle portion, and the upper and lower surfaces of the frame-shaped plastic holder are corresponding first mounting surfaces 21 and second mounting surfaces 22. When the battery cell 10 is mounted on the battery cell holder 20, it is correspondingly embedded in the upper and lower surfaces of the frame-shaped plastic holder; and at least two plastic support bars 26 are cross-arranged at the hollowed-out position in the middle of the frame-shaped plastic holder, which are used to support and electrically isolate the battery cell 10 installed in the first mounting surface 21 and the second mounting surface 22. In this way, the battery cell 10 is fixed using a frame-shaped plastic holder with a hollowed-out middle portion, which has good insulation and is safe to use. It can also significantly reduce the risk of short circuits between the battery cells 10, and the quality is guaranteed. The overall weight is relatively light, and it is convenient to assemble in the subsequent PACK, which is conducive to improving assembly efficiency and saving assembly time.
在本发明的另一实施例中，如图4所示，锂电池储能模块1还包括用于保护电芯10的上保护盖板40和下保护盖板50，上保护盖板40封盖于第一安装面21的上方并与电芯支架20围设形成第一安装空间(图未示)，下保护盖板50封盖于第二安装面22的下方并与电芯支架20围设形成第二安装空间(图未示)，电芯10封装于第一安装空间和/或第二安装空间内。具体地，电芯支架20的端部四角分别开设有若干第三连接孔25，上保护盖板40和下保护盖板50与各第三连接孔25相对的位置开设有若干第四连接孔41，上保护盖板40和下保护盖板50均通过第二紧固件42如螺钉等与所述电芯支架20连接固定，第二紧固件42的一端穿出第四连接孔41后固定于对应的所述第三连接孔25内。更具体地，上保护盖板40和下保护盖板50均为塑料盖板，更好的保证本实施例的锂电池储能模块1的绝缘特征，同时减轻模块的锂电池储能整体质量。具体地，上保护盖板40和下保护盖板50上还开设有若干用于散热的散热孔43，以更好的保证电芯10产生的热量能够及时散出。In another embodiment of the present invention, as shown in FIG4 , the lithium battery energy storage module 1 further includes an upper protective cover plate 40 and a lower protective cover plate 50 for protecting the battery cell 10, the upper protective cover plate 40 is sealed above the first mounting surface 21 and is surrounded with the battery cell holder 20 to form a first mounting space (not shown in the figure), the lower protective cover plate 50 is sealed below the second mounting surface 22 and is surrounded with the battery cell holder 20 to form a second mounting space (not shown in the figure), and the battery cell 10 is packaged in the first mounting space and/or the second mounting space. Specifically, a plurality of third connection holes 25 are respectively provided at the four corners of the end of the battery cell holder 20, and a plurality of fourth connection holes 41 are provided at the positions of the upper protective cover plate 40 and the lower protective cover plate 50 opposite to the third connection holes 25, and the upper protective cover plate 40 and the lower protective cover plate 50 are both connected and fixed to the battery cell holder 20 by a second fastener 42 such as a screw, and one end of the second fastener 42 passes through the fourth connection hole 41 and is fixed in the corresponding third connection hole 25. More specifically, the upper protective cover plate 40 and the lower protective cover plate 50 are both plastic cover plates, which better ensure the insulation characteristics of the lithium battery energy storage module 1 of this embodiment, while reducing the overall quality of the lithium battery energy storage of the module. Specifically, a plurality of heat dissipation holes 43 for heat dissipation are also provided on the upper protective cover plate 40 and the lower protective cover plate 50 to better ensure that the heat generated by the battery cell 10 can be dissipated in time.
如图1～11所示，本发明的另一实施例还提供了一种锂电池储能模组2，具体如图1～3所示，其包括若干上述实施例中的锂电池储能模块1和若干用于电性连接各锂电池储能模块1的电连接铜片60，各锂电池储能模块1上下或者左右堆叠设置，各电连接铜片60分别与各锂电池储能模块1上相邻的汇流排30固定连接。As shown in Figures 1 to 11, another embodiment of the present invention further provides a lithium battery energy storage module 2, specifically as shown in Figures 1 to 3, which includes several lithium battery energy storage modules 1 in the above embodiments and several electrical connection copper sheets 60 for electrically connecting the lithium battery energy storage modules 1, and the lithium battery energy storage modules 1 are stacked up and down or left and right, and the electrical connection copper sheets 60 are respectively fixedly connected to the adjacent bus bars 30 on each lithium battery energy storage module 1.
本发明实施例的锂电池储能模组2，包括多个堆叠设置的上述的锂电池储能模块1，且通过电连接铜片60电性连接各锂电池储能模块1上的汇流排30，即可实现各个锂电池储能模块1之间的电流汇集，如此，在设置汇流排30保证单个锂电池储能模块1的电连接接触面积的基础上，通过设计和控制电连接铜片60的尺寸大小可以进一步的保证各个锂电池储能模块1之间汇流时的电接触面积，确保各锂电池储能模块1串并联位置处的有效电接触面积，降低阻值、减少发热，从而实现对锂电池储能模组2的有效热管控；此外，采用电连接铜片60连接各锂电池储能模组2的汇流排30即可实现各个锂电池储能模块1的串并联汇流，结构简单，组装操作简便。The lithium battery energy storage module 2 of the embodiment of the present invention includes a plurality of the above-mentioned lithium battery energy storage modules 1 stacked and arranged, and the busbars 30 on each lithium battery energy storage module 1 are electrically connected through an electrical connection copper sheet 60, so that current convergence between each lithium battery energy storage module 1 can be achieved. In this way, on the basis of setting the busbar 30 to ensure the electrical connection contact area of a single lithium battery energy storage module 1, the electrical contact area during convergence between each lithium battery energy storage module 1 can be further guaranteed by designing and controlling the size of the electrical connection copper sheet 60, thereby ensuring the effective electrical contact area at the series-parallel position of each lithium battery energy storage module 1, reducing the resistance value and reducing the heat generation, thereby achieving effective heat control of the lithium battery energy storage module 2; in addition, the series-parallel convergence of each lithium battery energy storage module 1 can be achieved by connecting the busbars 30 of each lithium battery energy storage module 2 with the electrical connection copper sheet 60, which has a simple structure and is easy to assemble and operate.
在本实施例中，如图1和图2所示，当各锂电池储能模块1上下或者左右堆叠设置时，各个电池储能模块的各汇流排30均位于同一平面内，如此，电连接铜片60均连接固定于锂电池储能模组2的同侧，即各个电芯10的极耳11集中在锂电池储能模组2的同侧中心位置安装，安装简单，并且，如此布置电芯10的极耳11，还可以将电压线束、采样线束集中在整个模组的中央布线，线束短，布线简洁、美观。In this embodiment, as shown in Figures 1 and 2, when the lithium battery energy storage modules 1 are stacked up and down or left and right, the bus bars 30 of the battery energy storage modules are all located in the same plane. In this way, the electrical connection copper sheets 60 are all connected and fixed on the same side of the lithium battery energy storage module 2, that is, the tabs 11 of each battery cell 10 are concentrated at the center position of the same side of the lithium battery energy storage module 2 for installation, which is simple to install. Moreover, by arranging the tabs 11 of the battery cell 10 in this way, the voltage harness and the sampling harness can also be concentrated in the center of the entire module for wiring, the harness is short, and the wiring is simple and beautiful.
在本实施例中，如图1～3以及图8～11所示，电连接铜片60包括若干用于串联各锂电池储能模块1的串联铜片61和若干用于并联各锂电池储能模块1的并联铜片62，锂电池储能模组2通过串联铜片61和并联铜片62来实现各个锂电池储能模块1的串联和并联；具体地，各串联铜片61和各并联铜片62均通过第二紧固件42与各汇流排30的连接板33固定连接，串联铜片61和并联铜片62上均开设有若干第五连接孔63，且各第五连接孔63分别与汇流排30的连接板33上的第二连接孔331一一对应，串联铜片61和并联铜片62均通过第三紧固件64如螺钉等于各汇流排30固定连接；组装本实施例的锂电池储能模组2时，先将各个锂电池储能模块1叠合放置，并使各个汇流排30上下左右齐整的置于同一平面内，随后，再将第三紧固件64拧紧即可，组装程序简单，操作便捷。In this embodiment, as shown in FIGS. 1 to 3 and 8 to 11, the electrical connection copper sheet 60 includes a plurality of series copper sheets 61 for connecting the lithium battery energy storage modules 1 in series and a plurality of parallel copper sheets 62 for connecting the lithium battery energy storage modules 1 in parallel. The lithium battery energy storage module 2 realizes the series connection and parallel connection of each lithium battery energy storage module 1 through the series copper sheets 61 and the parallel copper sheets 62. Specifically, each series copper sheet 61 and each parallel copper sheet 62 are fixedly connected to the connecting plate 33 of each busbar 30 through the second fastener 42. The series copper sheet 61 and the parallel copper sheet 62 are fixedly connected to the connecting plate 33 of each busbar 30 through the second fastener 42. 2 are provided with a plurality of fifth connection holes 63, and each of the fifth connection holes 63 corresponds to the second connection holes 331 on the connection plate 33 of the busbar 30, and the series copper sheet 61 and the parallel copper sheet 62 are fixedly connected to each busbar 30 by a third fastener 64 such as a screw; when assembling the lithium battery energy storage module 2 of this embodiment, firstly, the lithium battery energy storage modules 1 are stacked and placed, and each busbar 30 is neatly placed in the same plane up and down and left and right, and then, the third fastener 64 is tightened, and the assembly procedure is simple and convenient to operate.
具体地，如图2所示，当设置有电连接铜片60连接各锂电池储能模块1的各个汇流排30时，仅设置第三紧固件64连接即可，即第三紧固件64将汇流排30连接固定于极耳固定部23上，此时，无需再设置额外的第一紧固件固定汇流排30，从而能够进一步简化组装时的操作，同时减少紧固件的用量、减轻锂电池储能模组2的整体重量。并且，当若干锂电池储能模块1组装成锂电池储能模组2时，仅最上方的锂电池储能模块1的上表面设置上保护盖板40，最下方的锂电池储能模块1的下表面设置下保护盖板50，中间部位的锂电池储能模块1可以无需设置上保护盖板40和下保护盖板50，如此，不仅可以起到保护电芯10的目的，还可缩小整个锂电池储能模组2的整体体积。Specifically, as shown in FIG2 , when an electrical connection copper sheet 60 is provided to connect each busbar 30 of each lithium battery energy storage module 1, only a third fastener 64 is provided for connection, that is, the third fastener 64 connects and fixes the busbar 30 to the pole ear fixing portion 23. At this time, there is no need to provide an additional first fastener to fix the busbar 30, thereby further simplifying the operation during assembly, while reducing the amount of fasteners and reducing the overall weight of the lithium battery energy storage module 2. Moreover, when a number of lithium battery energy storage modules 1 are assembled into a lithium battery energy storage module 2, only the upper surface of the uppermost lithium battery energy storage module 1 is provided with an upper protective cover plate 40, and the lower surface of the lowermost lithium battery energy storage module 1 is provided with a lower protective cover plate 50. The lithium battery energy storage module 1 in the middle may not need to be provided with an upper protective cover plate 40 and a lower protective cover plate 50. In this way, it can not only protect the battery cell 10, but also reduce the overall volume of the entire lithium battery energy storage module 2.
在本实施例中，如图2、3以及图8～11所示，串联铜片61包括直板串联铜片611和折板串联铜片612，锂电池储能模块1包括分别由若干锂电池储能模块1组成的第一储能模组件201和第二储能模组件202；第一储能模组件201的各汇流排30设置于同一平面内，第二储能模组件202的各汇流排30设置于同一平面内，并联铜片62和直板串联铜片611分别与位于同一平面内的各汇流排30连接；第一储能模组件201设置有汇流排30的平面与第二储能模组件202设置有汇流排30的平面相对设置，折板串联铜片612包括平行设置的第一直板部6121、第二直板部6122以及连接于第一直板部6121和第二直板部6122相邻端部之间的连接部6133，第一直板部6121与第一储能模组件201上的汇流排30连接，第二直板部6122与第二储能模组件202上的汇流排30连接。如此，通过设置折板串联铜片612连接相邻的两组锂电池储能模组2，从而将彼此独立的第一储能模组件201和第二储能模组件202组装到一起以组成一个储能量更大的锂电池储能模组2，以进一步的扩大单个锂电池储能模组2的储能量，图3即为采用折板并联铜片62连接相邻的第一储能模组件201和第二储能模组件202时的连接状态图。当然，在其他的一些实施例中，锂电池储能模组2包括但不仅限于包括上述的第一储能模组件201和第二储能模组件202，其还可以包括更多的储能模组件，且各个相邻的储能模组件之间通过折板串联铜片612进行连接。In this embodiment, as shown in FIGS. 2, 3 and 8 to 11, the series copper sheet 61 includes a straight plate series copper sheet 611 and a folded plate series copper sheet 612, and the lithium battery energy storage module 1 includes a first energy storage module assembly 201 and a second energy storage module assembly 202 respectively composed of a plurality of lithium battery energy storage modules 1; each bus bar 30 of the first energy storage module assembly 201 is arranged in the same plane, each bus bar 30 of the second energy storage module assembly 202 is arranged in the same plane, and the parallel copper sheet 62 and the straight plate series copper sheet 611 are respectively connected to each bus bar 30 located in the same plane. The plane on which the bus 30 of the first energy storage module assembly 201 is provided is arranged opposite to the plane on which the bus 30 of the second energy storage module assembly 202 is provided, and the folded plate series copper sheet 612 includes a first straight plate portion 6121 and a second straight plate portion 6122 arranged in parallel, and a connecting portion 6133 connected between adjacent ends of the first straight plate portion 6121 and the second straight plate portion 6122, the first straight plate portion 6121 is connected to the bus 30 on the first energy storage module assembly 201, and the second straight plate portion 6122 is connected to the bus 30 on the second energy storage module assembly 202. In this way, by setting the folding plate series copper sheet 612 to connect the two adjacent groups of lithium battery energy storage modules 2, the first energy storage module assembly 201 and the second energy storage module assembly 202 that are independent of each other are assembled together to form a lithium battery energy storage module 2 with greater energy storage, so as to further expand the energy storage capacity of a single lithium battery energy storage module 2. FIG3 is a connection state diagram when the folding plate parallel copper sheet 62 is used to connect the adjacent first energy storage module assembly 201 and the second energy storage module assembly 202. Of course, in some other embodiments, the lithium battery energy storage module 2 includes but is not limited to the above-mentioned first energy storage module assembly 201 and the second energy storage module assembly 202, and it can also include more energy storage module assemblies, and each adjacent energy storage module assembly is connected by the folding plate series copper sheet 612.
在本实施例中，如图1～3所示，锂电池储能模组2还包括用于组装连接各锂电池储能模块1的若干压条70，各压条70分别与各锂电池储能模块1的电芯支架20连接以将各个锂电池储能模块1连接组装在一起，具体地，压条70与各锂电池储能模块1的上保护盖板40或下保护盖板50固定连接，从而各个锂电池储能模块1组合连接成一个整体的锂电池储能模组2，使锂电池储能模组2的整体安装及搬运更加方便。In this embodiment, as shown in Figures 1 to 3, the lithium battery energy storage module 2 also includes a plurality of pressure strips 70 for assembling and connecting the lithium battery energy storage modules 1, and each pressure strip 70 is respectively connected to the battery cell bracket 20 of each lithium battery energy storage module 1 to connect and assemble the lithium battery energy storage modules 1 together. Specifically, the pressure strip 70 is fixedly connected to the upper protective cover plate 40 or the lower protective cover plate 50 of each lithium battery energy storage module 1, so that each lithium battery energy storage module 1 is combined and connected into an integral lithium battery energy storage module 2, making the overall installation and transportation of the lithium battery energy storage module 2 more convenient.
在本实施例中，如图1～3所示，压条70包括直形压条71和异形压条72，当相邻两锂电池储能模块1的外部表面位于同一平面内时，使用直形压条71连接，如图2所示；而当相邻两锂电池储能模块1的外部表面分别位于上下两不同的平面内时，则使用异形压条72进行连接固定，如图1和图3所示。In this embodiment, as shown in Figures 1 to 3, the pressure strips 70 include straight pressure strips 71 and special-shaped pressure strips 72. When the external surfaces of two adjacent lithium battery energy storage modules 1 are located in the same plane, the straight pressure strips 71 are used for connection, as shown in Figure 2; and when the external surfaces of two adjacent lithium battery energy storage modules 1 are located in two different planes, the special-shaped pressure strips 72 are used for connection and fixation, as shown in Figures 1 and 3.
具体地，如图1～3所示，其中图1示出了采用并联铜片62和直板串联铜片611以及异形压条72连接组装成的7串5并单头双极耳软包锂电电芯，图2示出了采用并联铜片62和直板串联铜片611以及直形压条71连接组装成的8串5并单头双极耳软包锂电电芯，而图3示出了并联铜片62、直板串联铜片611、折板串联铜片612和直形压条71以及异形压条72，连接组装成的8串单头双极耳软包锂电电芯模组与7串单头双极耳软包锂电电芯模组的装配图。Specifically, as shown in Figures 1 to 3, Figure 1 shows a 7-series 5-parallel single-head bipolar ear soft-pack lithium battery cell assembled by connecting parallel copper sheets 62, straight series copper sheets 611 and special-shaped pressure strips 72, Figure 2 shows an 8-series 5-parallel single-head bipolar ear soft-pack lithium battery cell assembled by connecting parallel copper sheets 62, straight series copper sheets 611 and straight pressure strips 71, and Figure 3 shows an assembly diagram of an 8-series single-head bipolar ear soft-pack lithium battery cell module and a 7-series single-head bipolar ear soft-pack lithium battery cell module assembled by connecting parallel copper sheets 62, straight series copper sheets 611, folded series copper sheets 612, straight pressure strips 71 and special-shaped pressure strips 72.
在本实施例中，如图8～10所示，电连接铜片60即串联铜片61和并联铜片62均优选由厚度为0.5mm～2mm的紫铜片冲压制成，在一些具体的实施例中，电连接铜片60即串联铜片61和并联铜片62的厚度均可以为0.5mm、0.8mm、1.0mm、1.2mm、1.5mm、1.8mm或者2.0mm等。采用厚度为0.5mm～2mm的紫铜片冲压制作电连接铜片60，如此，制作成型的电连接铜片60整体厚度较小，由于电连接铜片60被制作的足够薄，故其在安装过程中更易于变形，组装时能够根据组装平面的平整度调整自身的平面贴附度，从而能够补足锂电池储能模组2在组装过程中因加工公差精度问题而存在的安装面平整度不好的缺陷，以此确保各锂电池储能模块1之间的具有足够的电接触面积，从而降低锂电池储能模组2的各个电连接位置处的电阻，减少发热；并且，于紫铜片上冲压第五连接孔63即可完成对电连接片的加工制作，加工工艺简单，成本相对较低。In this embodiment, as shown in Figures 8 to 10, the electrically connecting copper sheet 60, i.e., the series copper sheet 61 and the parallel copper sheet 62, are preferably made by stamping a copper sheet with a thickness of 0.5 mm to 2 mm. In some specific embodiments, the thickness of the electrically connecting copper sheet 60, i.e., the series copper sheet 61 and the parallel copper sheet 62, can be 0.5 mm, 0.8 mm, 1.0 mm, 1.2 mm, 1.5 mm, 1.8 mm or 2.0 mm, etc. The electrical connection copper sheet 60 is made by stamping a copper sheet with a thickness of 0.5mm to 2mm. In this way, the overall thickness of the formed electrical connection copper sheet 60 is relatively small. Since the electrical connection copper sheet 60 is made thin enough, it is easier to deform during the installation process. During assembly, its own plane adhesion can be adjusted according to the flatness of the assembly plane, thereby making up for the defect of poor flatness of the installation surface of the lithium battery energy storage module 2 due to processing tolerance accuracy problems during the assembly process, thereby ensuring that there is sufficient electrical contact area between the lithium battery energy storage modules 1, thereby reducing the resistance at each electrical connection position of the lithium battery energy storage module 2 and reducing heat; and the processing and manufacturing of the electrical connection sheet can be completed by punching the fifth connection hole 63 on the copper sheet, and the processing technology is simple and the cost is relatively low.
以上所述仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等，均应包含在本发明的保护范围之内。The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
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| CN110649198B (en) * | 2019-09-27 | 2022-09-23 | 联动天翼新能源有限公司 | General module of lithium cell package and battery package |
| US12224448B2 (en) | 2019-09-29 | 2025-02-11 | Ningde Amperex Technology Limited | Cell frame set and energy storage device package including cell frame set |
| CN110739422B (en) * | 2019-09-29 | 2024-09-06 | 厦门新能达科技有限公司 | Battery cell support group and energy storage device package including the battery cell support group |
| CN110931675A (en) * | 2019-10-25 | 2020-03-27 | 杭州乾代科技有限公司 | Lithium battery pack with active temperature control function |
| WO2021199070A1 (en) * | 2020-04-01 | 2021-10-07 | Tvs Motor Company Limited | A battery block |
| CN111725470B (en) * | 2020-06-10 | 2023-01-13 | 华富(江苏)锂电新技术有限公司 | Series-connection assembled soft-package lithium battery system for electric wheelchair |
| CN112531275A (en) * | 2020-12-23 | 2021-03-19 | 湖北亿纬动力有限公司 | Energy storage module |
| CN113517520A (en) * | 2021-07-19 | 2021-10-19 | 恒大新能源技术(深圳)有限公司 | Electricity core subassembly and battery package |
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