CN205543110U - Square power battery - Google Patents
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- CN205543110U CN205543110U CN201620213570.3U CN201620213570U CN205543110U CN 205543110 U CN205543110 U CN 205543110U CN 201620213570 U CN201620213570 U CN 201620213570U CN 205543110 U CN205543110 U CN 205543110U
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- 238000004804 winding Methods 0.000 claims abstract description 36
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000011889 copper foil Substances 0.000 claims description 3
- 239000011888 foil Substances 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 239000000178 monomer Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 238000011031 large-scale manufacturing process Methods 0.000 abstract description 4
- 230000005611 electricity Effects 0.000 abstract 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005405 multipole Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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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
-
- 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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- Cell Electrode Carriers And Collectors (AREA)
- Secondary Cells (AREA)
Abstract
Description
技术领域technical field
本实用新型具体涉及一种方形动力电池。The utility model specifically relates to a square power battery.
背景技术Background technique
锂离子电池由于高能量密度、高工作电压、长循环寿命、绿色环保等优点已经广泛使用于手机、平板电脑、照像机等各种3C产品。Lithium-ion batteries have been widely used in various 3C products such as mobile phones, tablet computers, and cameras due to their high energy density, high operating voltage, long cycle life, and environmental protection.
这两年由于国家的大力支持，锂离子电池在新能源汽车及储能等领域也取得长足的进步，但是在动力领域上使用上，对动力电池的能量密度及电源管理系统提出了更高的要求。Due to the strong support of the state in the past two years, lithium-ion batteries have also made great progress in the fields of new energy vehicles and energy storage. However, in the field of power, higher energy density and power management systems for power batteries have been proposed. Require.
目前方形动力电池，外壳主要采用铝壳或钢壳，内部极芯采用单个极芯，这样单个极芯的电池单体容量做不高，需要更多的串并联，加大电原管理系统控制的难度。另外单个极芯两边引出电流的集流体采用展开的方式，占用了很大的空间，能量密度无法做得更高。本实用新型采用多极芯内部并联的方式，可以将单体电池的容量尽量做高，减少串并的次数，降低电源管理的难度。At present, the outer shell of the square power battery is mainly made of aluminum shell or steel shell, and the internal pole core is single pole core. In this way, the capacity of a single battery cell is not high, and more series and parallel connections are required to increase the control of the power source management system. difficulty. In addition, the current collectors on both sides of a single pole core are expanded, which takes up a lot of space, and the energy density cannot be made higher. The utility model adopts the internal parallel connection of multi-pole cores, which can make the capacity of the single battery as high as possible, reduce the number of series and parallel connections, and reduce the difficulty of power supply management.
同时单体极芯采用卷绕的方式，增加电池的稳定性和安全性，同时生产效率高，适用于大规模生产。单体极芯集流体切除4个角后，折叠在极芯的两侧，减少展开集流体占用的无效空间，可以提升电池的能量密度。At the same time, the single pole core adopts a winding method to increase the stability and safety of the battery. At the same time, the production efficiency is high and it is suitable for large-scale production. After the four corners of the single pole core collector are cut off, it is folded on both sides of the pole core to reduce the invalid space occupied by the unfolded current collector, which can increase the energy density of the battery.
发明内容Contents of the invention
本实用新型的目的在于克服上述现有技术的不足，提供了一种提高单体电池的容量和能量、减少占用空间、提升电池的稳定性和安全性、提升生产效率和提升电池性能的方形动力电池。The purpose of the utility model is to overcome the deficiencies of the above-mentioned prior art, and provide a square motor that increases the capacity and energy of a single battery, reduces the occupied space, improves the stability and safety of the battery, improves the production efficiency and improves the performance of the battery. Battery.
本实用新型描述的一种方形动力电池，包括外壳和极芯，极芯位于外壳内，其中极芯上设有主正极耳和主负极耳，主正极耳和主负极耳连接于外壳上，极芯包括至少两个单体电芯并联而成，单体电芯的上设有单体正极耳和单体负极耳，单体正极耳和单体负极耳分别连接于外壳上的正极和负极上。A square power battery described in the utility model includes a casing and a pole core. The core consists of at least two single cells connected in parallel, and the single cell is provided with a single positive pole ear and a single negative pole ear, and the single positive pole ear and the single negative pole ear are connected to the positive pole and the negative pole on the casing .
另外，根据本实用新型的一种方形动力电池还具有如下附加技术特征，根据本实用新型的一些实施例，具体进一步，所述单体负极耳与外壳上的负极之间由主负极耳相连接，In addition, a square power battery according to the utility model also has the following additional technical features. According to some embodiments of the utility model, it is further specific that the negative pole ear of the single unit is connected with the negative pole on the casing by the main negative pole ear ,
具体进一步，所述主负极耳焊接在负极上。Specifically, the main negative tab is welded on the negative electrode.
具体进一步，所述单体正极耳与外壳上的正极之间由主正极耳相连接。Specifically, the positive tab of the monomer is connected to the positive pole on the casing by a main positive tab.
具体进一步，所述主正极耳焊接在正极上。Specifically, the main positive tab is welded on the positive electrode.
具体进一步，所述外壳呈方形，所述外壳可以为钢壳或铝壳。Further specifically, the shell is square, and the shell may be a steel shell or an aluminum shell.
具体进一步，所述单体负极耳是铜镀镍极耳或镍极耳，单体正极耳是铝极耳。Specifically, the single negative tab is a nickel-plated copper tab or a nickel tab, and the single positive tab is an aluminum tab.
具体进一步，所述单体电芯包括卷芯，卷芯一侧设有负极集流体，负极集流体焊接单体负极耳上并折在卷芯的侧边，卷芯另一侧设有正极集流体，正极集流体焊接单体正极耳上并折在卷芯的另一侧边构成。Specifically, the single cell includes a winding core, one side of the winding core is provided with a negative electrode current collector, the negative electrode current collector is welded to the single negative electrode ear and folded on the side of the winding core, and the other side of the winding core is provided with a positive electrode collector. Fluid, the positive electrode collector is welded to the positive ear of the monomer and folded on the other side of the winding core.
具体进一步，所述负极集流体是铜箔片，正极集流体是铝箔片，负极集流体和正极集流体位于卷芯两侧，负极集流体和正极集流体上分设有凹位。Specifically, the negative current collector is a copper foil, the positive current collector is an aluminum foil, the negative current collector and the positive current collector are located on both sides of the winding core, and the negative current collector and the positive current collector are respectively provided with recesses.
具体进一步，所述卷芯包括正极片和负极片、正极片和负极片之间由隔膜隔开绝缘卷绕而成，负极片涂料部分大小大于正极耳涂料部分大小，隔膜大小大于负极片大小，负极片与负极集流体相连接，负极集流体卷绕后凸出在卷芯一侧，正极片与正极集流体相连接，正极集流体卷绕后凸出在卷芯另一侧。Specifically, the winding core includes a positive electrode sheet and a negative electrode sheet, and the positive electrode sheet and the negative electrode sheet are separated and wound by a diaphragm. The size of the coating part of the negative electrode sheet is larger than the size of the coating part of the positive tab, and the size of the diaphragm is larger than the size of the negative electrode sheet. The negative electrode sheet is connected with the negative electrode collector, and the negative electrode collector protrudes on one side of the winding core after being wound, and the positive electrode sheet is connected with the positive electrode current collector, and the positive electrode current collector protrudes on the other side of the winding core after being wound.
本实用新型的有益效果是：1、极芯采用至少两个单体电芯并联，可以提高单体电池的容量和能量，同时单体电芯的极耳和集流体可以折在卷芯的两侧，减少占用的空间，有限的空间都可以用来提升容量，有利电池能量密度的提升；2、单体电芯采用卷绕的结构方式，提高的电池的稳定性和安全性，同时生产效率更高，有利于规模化生产；3、同时单体电芯采用多层集流体输出的多极耳结构，有利于降低电池的内阻，有利于电池的高倍率大电流充放电。The beneficial effects of the utility model are as follows: 1. The pole core adopts at least two single cells connected in parallel, which can increase the capacity and energy of the single cells, and at the same time, the tabs and current collectors of the single cells can be folded between the two sides of the winding core. Side, reduce the occupied space, the limited space can be used to increase the capacity, which is beneficial to the improvement of the energy density of the battery; 2. The single battery cell adopts a winding structure, which improves the stability and safety of the battery, and at the same time, the production efficiency Higher, which is conducive to large-scale production; 3. At the same time, the single cell adopts a multi-pole structure with multi-layer current collector output, which is conducive to reducing the internal resistance of the battery and is conducive to high-rate and high-current charging and discharging of the battery.
附图说明Description of drawings
图1是本实用新型的结构示意图。Fig. 1 is a structural representation of the utility model.
图2是卷芯、负极集流体、正极集流体、单体负极耳和单体正极耳相连接的结构示意图。Fig. 2 is a schematic structural diagram of the connection of the winding core, the negative electrode current collector, the positive electrode current collector, the negative electrode lug of the single body, and the positive electrode ear of the single body.
图3是卷芯的结构示意图。Fig. 3 is a schematic structural view of the winding core.
图4是卷芯的截面状态结构示意图。Fig. 4 is a schematic diagram of the cross-sectional state structure of the winding core.
以下附图的图标说明：Icon descriptions for the following drawings:
单体电芯1；主负极耳2；主正极耳3；单体负极耳4；单体正极耳5；负极集流体6；正极集流体7；隔膜8；负极片9；正极片10；卷芯11。Single cell 1; main negative tab 2; main positive tab 3; single negative tab 4; single positive tab 5; negative collector 6; positive collector 7; diaphragm 8; negative sheet 9; positive sheet 10; volume Core 11.
具体实施方式detailed description
下面详细描述本实用新型的实施例，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。下面通过参考附图描述的实施例是示例性的，仅用于解释本实用新型，而不能理解为对本实用新型的限制。Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model, but should not be construed as limiting the present utility model.
下面参考图1至图4描述根据本实用新型实施例的一种方形动力电池，包括外壳和极芯，极芯位于外壳内，其中极芯上设有主正极耳3和主负极耳2，主正极耳3和主负极耳2连接于外壳上，极芯包括至少两个单体电芯1并联而成，单体电芯1的上设有单体正极耳5和单体负极耳4，单体正极耳5和单体负极耳4分别连接于外壳上的正极和负极上。其中极芯采用多个单体电芯1并联，可以提高单体电池的容量和能量，同时单体电芯1的极耳和集流体可以折在卷芯的两侧，减少占用的空间，有限的空间都可以用来提升容量，有利电池能量密度的提升。其中极耳分为主正极耳3和主负极耳2和集流体分为负极集流体6和正极集流体7。A square power battery according to an embodiment of the present utility model is described below with reference to FIGS. 1 to 4 , which includes a casing and a pole core. The positive tab 3 and the main negative tab 2 are connected to the casing. The pole core includes at least two single cells 1 connected in parallel. The single cell 1 is provided with a single positive tab 5 and a single negative tab 4. The positive pole ear 5 of the body and the negative pole ear 4 of the single body are respectively connected to the positive pole and the negative pole on the casing. Among them, the pole core adopts multiple single cells 1 connected in parallel, which can increase the capacity and energy of the single battery. At the same time, the tabs and current collectors of the single cell 1 can be folded on both sides of the winding core to reduce the occupied space. All the space can be used to increase the capacity, which is beneficial to the improvement of the energy density of the battery. Wherein the tabs are divided into main positive tabs 3 and main negative tabs 2 and the current collectors are divided into negative current collectors 6 and positive current collectors 7 .
另外，根据本实用新型的一种方形动力电池还具有如下附加技术特征，根据本实用新型的一些实施例，具体进一步，所述单体负极耳4与外壳上的负极之间由主负极耳2相连接，所述主负极耳2焊接在负极上。所述单体正极耳5与外壳上的正极之间由主正极耳3相连接。所述主正极耳3焊接在正极上。In addition, a square power battery according to the utility model also has the following additional technical features. According to some embodiments of the utility model, it is further specified that the main negative tab 2 is connected between the single negative tab 4 and the negative pole on the casing. connected, the main negative tab 2 is welded on the negative pole. The main positive tab 3 is connected between the single positive tab 5 and the positive pole on the casing. The main positive tab 3 is welded on the positive pole.
具体进一步，所述外壳呈方形，所述外壳可以为钢壳或铝壳。Further specifically, the shell is square, and the shell may be a steel shell or an aluminum shell.
可根据实际的设计，所述单体负极耳4是铜镀镍极耳或镍极耳，单体正极耳5是铝极耳。According to the actual design, the single negative tab 4 is a nickel-plated copper tab or a nickel tab, and the single positive tab 5 is an aluminum tab.
具体进一步，所述单体电芯1包括卷芯11，卷芯11一侧设有负极集流体6，负极集流体6焊接单体负极耳4上并折在卷芯11的侧边，卷芯11另一侧设有正极集流体7，正极集流体7焊接单体正极耳5上并折在卷芯11的另一侧边构成。Specifically, the single battery core 1 includes a winding core 11, one side of the winding core 11 is provided with a negative electrode current collector 6, the negative electrode current collector 6 is welded to the single negative electrode tab 4 and folded on the side of the winding core 11, the winding core The other side of 11 is provided with a positive electrode current collector 7, which is formed by welding the single positive electrode ear 5 and folding it on the other side of the winding core 11.
具体进一步，所述负极集流体6是铜箔片，正极集流体7是铝箔片，负极集流体6和正极集流体7位于卷芯11两侧，负极集流体6和正极集流体7上分设有凹位。所述卷芯11包括正极片10和负极片9、正极片10和负极片9之间由隔膜8隔开绝缘卷绕而成，负极片9涂料部分大小大于正极耳10涂料部分大小，隔膜8大小大于负极片9大小，负极片9与负极集流体6相连接，负极集流体6卷绕后凸出在卷芯11一侧，正极片10与正极集流体7相连接，正极集流体7卷绕后凸出在卷芯11另一侧。其中单体电芯1采用卷绕的结构方式，提高的电池的稳定性和安全性，同时生产效率更高，有利于规模化生产；另外，单体电芯1采用多层集流体输出的多极耳结构，有利于降低电池的内阻，有利于电池的高倍率大电流充放电。Specifically, the negative current collector 6 is a copper foil, the positive current collector 7 is an aluminum foil, the negative current collector 6 and the positive current collector 7 are located on both sides of the winding core 11, and the negative current collector 6 and the positive current collector 7 are respectively provided with Concave. The winding core 11 includes a positive electrode sheet 10 and a negative electrode sheet 9, and the positive electrode sheet 10 and the negative electrode sheet 9 are separated and wound by a separator 8. The size of the coating part of the negative electrode sheet 9 is larger than the size of the coating part of the positive electrode ear 10. The diaphragm 8 The size is larger than the size of the negative electrode sheet 9, the negative electrode sheet 9 is connected to the negative electrode collector 6, and the negative electrode collector 6 protrudes on the side of the core 11 after being wound, the positive electrode sheet 10 is connected to the positive electrode collector 7, and the positive electrode collector 7 rolls Protrude on the other side of the winding core 11 after winding. Among them, the single battery cell 1 adopts a winding structure, which improves the stability and safety of the battery, and at the same time, the production efficiency is higher, which is conducive to large-scale production; The tab structure is conducive to reducing the internal resistance of the battery and is conducive to the high rate and high current charge and discharge of the battery.
上仅为本实用新型的较佳实施例而已，并不用以限制本实用新型，凡在本实用新型的精神和原则之内所作的任何修改、等同替换或改进等，均应包含在本实用新型的保护范围之内。The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model. Any modification, equivalent replacement or improvement made within the spirit and principles of the utility model shall be included in the utility model. within the scope of protection.
Claims (10)
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107293809A (en) * | 2017-08-01 | 2017-10-24 | 珠海格力电器股份有限公司 | Soft package lithium ion battery and manufacturing method thereof |
| CN107565172A (en) * | 2017-10-18 | 2018-01-09 | 山东圣阳电源股份有限公司 | A kind of lithium ion battery manufacture method |
| CN107887622A (en) * | 2017-11-06 | 2018-04-06 | 惠州亿纬锂能股份有限公司 | A kind of lithium ferrous disulfide battery and its assemble method |
| CN108417887A (en) * | 2018-05-21 | 2018-08-17 | 东莞塔菲尔新能源科技有限公司 | A kind of high power type lithium ion cell and preparation method thereof |
| CN111816800A (en) * | 2020-07-17 | 2020-10-23 | 河南平煤国能锂电有限公司 | A single battery with internal cells in series or in parallel |
-
2016
- 2016-03-18 CN CN201620213570.3U patent/CN205543110U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107293809A (en) * | 2017-08-01 | 2017-10-24 | 珠海格力电器股份有限公司 | Soft package lithium ion battery and manufacturing method thereof |
| CN107565172A (en) * | 2017-10-18 | 2018-01-09 | 山东圣阳电源股份有限公司 | A kind of lithium ion battery manufacture method |
| CN107887622A (en) * | 2017-11-06 | 2018-04-06 | 惠州亿纬锂能股份有限公司 | A kind of lithium ferrous disulfide battery and its assemble method |
| CN107887622B (en) * | 2017-11-06 | 2020-01-07 | 惠州亿纬锂能股份有限公司 | Lithium-ferrous disulfide battery and assembling method thereof |
| CN108417887A (en) * | 2018-05-21 | 2018-08-17 | 东莞塔菲尔新能源科技有限公司 | A kind of high power type lithium ion cell and preparation method thereof |
| CN111816800A (en) * | 2020-07-17 | 2020-10-23 | 河南平煤国能锂电有限公司 | A single battery with internal cells in series or in parallel |
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Address after: 528400 factory buildings 2, 3 and 4, Dongya area, Dazhe Industrial Park, Nanlang street, Zhongshan City, Guangdong Province Patentee after: ZHONGSHAN ZHONGWANGDE NEW ENERGY TECHNOLOGY Co.,Ltd. Address before: 1 / F and 2 / F, No.3 workshop, Dongya area, dache Industrial Park, Nanlang Town, Zhongshan City, Guangdong Province, 528400 Patentee before: ZHONGSHAN ZHONGWANGDE NEW ENERGY TECHNOLOGY Co.,Ltd. |