CN204204977U - Li-ion batteries piles - Google Patents
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- CN204204977U CN204204977U CN201420736383.4U CN201420736383U CN204204977U CN 204204977 U CN204204977 U CN 204204977U CN 201420736383 U CN201420736383 U CN 201420736383U CN 204204977 U CN204204977 U CN 204204977U
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- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 27
- 229910052751 metal Inorganic materials 0.000 claims description 21
- 239000002184 metal Substances 0.000 claims description 21
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052802 copper Inorganic materials 0.000 claims description 9
- 239000010949 copper Substances 0.000 claims description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000000178 monomer Substances 0.000 claims 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 abstract description 18
- 230000009286 beneficial effect Effects 0.000 abstract description 6
- 210000005069 ears Anatomy 0.000 abstract description 3
- 230000000149 penetrating effect Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 7
- 238000003466 welding Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011241 protective layer Substances 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
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- Connection Of Batteries Or Terminals (AREA)
Abstract
本实用新型公开了一种锂离子电池组。其包括：相互串联或者并联的至少两所述电芯单体，在各所述电芯单体的宽度端部上伸出有极耳，所述电池组内各所述电芯单体的极耳按照预定的串联或者并联关系相连接，将相互连接的两极耳的其中之一记为第一极耳，另一记为第二极耳，其中，第一极耳、第二极耳的第一端均呈垂直状，第二端分别弯折成水平状且水平层叠，所述第一极耳、第二极耳的第二端通过垂直贯穿的铆钉固定铆接；所述锂离子电池组的放电接口的正极、负极分别与作为所述电池组的正极、负极的两极耳连接。应用该技术方案能够避免极耳之间的串并联连接时受热对电芯单体的损害，有利于提高电池组的性能。
The utility model discloses a lithium ion battery pack. It includes: at least two battery cells connected in series or in parallel, with tabs protruding from the width ends of each of the battery cells, and poles of each of the battery cells in the battery pack The ears are connected according to a predetermined series or parallel relationship, and one of the two connected ears is recorded as the first ear, and the other is recorded as the second ear, where the first ear and the second ear are One end is vertical, and the second ends are respectively bent into a horizontal shape and stacked horizontally. The second ends of the first tab and the second tab are fixed and riveted by vertically penetrating rivets; the lithium-ion battery pack The positive pole and the negative pole of the discharge interface are respectively connected to two tabs serving as the positive pole and the negative pole of the battery pack. The application of this technical solution can avoid the damage to the battery cells caused by heat during the series-parallel connection between the tabs, and is beneficial to improve the performance of the battery pack.
Description
技术领域technical field
本实用新型涉及锂离子电池，特别涉及一种锂离子电池组。The utility model relates to a lithium ion battery, in particular to a lithium ion battery pack.
背景技术Background technique
中国是全球最大的电动自行车生产和消费国,年产量和消费量占世界总产量和消费量的比重均超过90％。经过几年时间市场使用，目前市场对于节能与新能源汽车的概念已经不再陌生，新能源汽车未来逐渐替代传统汽油车已成为各国发展汽车产业的共识，作为核心部件的动力电池则是新能源汽车发展的关键：混合动力汽车是目前最佳的过渡产品，但纯电动动力汽车是未来发展方向，核心技术在电池技术上的突破。China is the world's largest producer and consumer of electric bicycles, and its annual production and consumption account for more than 90% of the world's total production and consumption. After several years of market use, the current market is no longer unfamiliar with the concepts of energy saving and new energy vehicles. It has become the consensus of all countries to develop the automobile industry that new energy vehicles will gradually replace traditional gasoline vehicles in the future. The power battery as the core component is a new energy. The key to automobile development: hybrid electric vehicles are the best transitional products at present, but pure electric vehicles are the future development direction, and the core technology is a breakthrough in battery technology.
锂离子电池组为通过多个电芯体单体通过串联或者并联或者串并联组合得到大容量高倍率的电源，其广泛应用于动力电源。在现有技术中电芯体单体之间往往通过极耳之间的锡焊、点焊、超声波焊接等方式连接。采用Lithium-ion battery pack is a power source with large capacity and high rate obtained by connecting multiple battery cells in series or in parallel or in series-parallel combination, which is widely used in power sources. In the prior art, the cells of the battery cells are often connected by means of tin welding, spot welding, ultrasonic welding and the like between tabs. use
实用新型内容Utility model content
本实用新型实施例的目的之一在于提供一种锂离子电池组。应用该技术方案能够避免极耳之间的串并联连接时受热对电芯单体的损害，有利于提高电池组的性能。One of the objectives of the embodiments of the present invention is to provide a lithium-ion battery pack. The application of this technical solution can avoid the damage to the battery cells by heat during the series-parallel connection between the tabs, which is beneficial to improve the performance of the battery pack.
本实用新型实施例提供的一种锂离子电池组，包括：A lithium-ion battery pack provided by an embodiment of the utility model includes:
相互串联或者并联的至少两所述电芯单体，在各所述电芯单体的宽度端部上伸出有极耳，At least two of the battery cells connected in series or in parallel have tabs protruding from the width ends of each of the battery cells,
所述电池组内各所述电芯单体的极耳按照预定的串联或者并联关系相连接，将相互连接的两极耳的其中之一记为第一极耳，另一记为第二极耳，The tabs of each of the battery cells in the battery pack are connected according to a predetermined series or parallel relationship, and one of the two tabs connected to each other is recorded as the first tab, and the other is recorded as the second tab ,
其中，第一极耳、第二极耳的第一端均呈垂直状，第二端分别弯折成水平状且水平层叠，所述第一极耳、第二极耳的第二端通过垂直贯穿的铆钉固定铆接；Wherein, the first ends of the first tab and the second tab are vertical, the second ends are respectively bent into a horizontal shape and stacked horizontally, and the second ends of the first tab and the second tab are vertically Penetrating rivets for fixed riveting;
所述锂离子电池组的放电接口的正极、负极分别与作为所述电池组的正极、负极的两极耳连接。The positive pole and the negative pole of the discharge interface of the lithium-ion battery pack are respectively connected to two tabs serving as the positive pole and the negative pole of the battery pack.
可选地，所述锂离子电池组的放电接口包括：分别与正极接口、负极接口连接的第一刚性进金属条、第二刚性金属条，Optionally, the discharge interface of the lithium-ion battery pack includes: a first rigid metal strip and a second rigid metal strip connected to the positive interface and the negative interface respectively,
所述第一刚性金属条、第二刚性金属条分别水从所述正极接口、负极接口水平伸出，分别通过水平贯穿的铆钉与作为所述电池组的正极、负极的两极耳相铆接。The first rigid metal strip and the second rigid metal strip protrude horizontally from the positive electrode interface and the negative electrode interface respectively, and are riveted to the two tabs of the positive electrode and the negative electrode of the battery pack through horizontally penetrating rivets respectively.
可选地，所述第一刚性金属条、第二刚性金属条分别为铜条。Optionally, the first rigid metal strip and the second rigid metal strip are respectively copper strips.
可选地，各所述电芯单体相互串联，Optionally, each of the battery cells is connected in series,
具体是各相邻的所述电芯单体的极耳按照串联关系相连接，所述第一极耳为两相邻的所述电芯单体中其中之一的极耳，所述第二极耳为两相邻的所述电芯单体中的另一极耳，所述第一极耳、第二极耳极性相反。Specifically, the tabs of the adjacent battery cells are connected in series, the first tab is the tab of one of the two adjacent battery cells, and the second The tab is the other tab of two adjacent battery cells, and the first tab and the second tab have opposite polarities.
可选地，各所述电芯单体相互并联，Optionally, the battery cells are connected in parallel with each other,
具体是所有所述电芯单体的极耳按照并联关系相连接，Specifically, the tabs of all the battery cells are connected in parallel,
所述第一极耳为相互连接的任意两所述电芯单体的其中一极耳，所述第二极耳为两所述电芯单体中的另一极耳，所述第一极耳、第二极耳极性相同。The first tab is one tab of any two battery cells connected to each other, the second tab is the other tab of the two battery cells, and the first tab is The polarity of the ear and the second ear are the same.
可选地，各所述电芯单体的正极耳为表面镀有镍层的铜片，负极耳为铝片。Optionally, the positive tab of each battery cell is a copper sheet with a nickel layer on its surface, and the negative tab is an aluminum sheet.
由上可见，相对于锡焊、点焊、超声波焊接等连接方案，本实施例锂离子电池组内各电芯体之间，电池组与放电接口之间均采用铆接工艺，应用本实施例技术方案能够避免加热对电芯单体101的损害导致的不良率，有利于保障电池组性能。另外，本实施例采用电芯单体101之间的极耳直接弯折水平层叠然后铆接连接工艺，而不需要其他辅助材料，其结构简单，易于操作，有利于节省生成成本，提高生产效率。It can be seen from the above that, compared with the connection schemes such as soldering, spot welding, and ultrasonic welding, the riveting process is adopted between the battery cells in the lithium-ion battery pack in this embodiment, and between the battery pack and the discharge interface, and the technology of this embodiment is applied. The solution can avoid the failure rate caused by the damage of the heating to the battery cells 101, which is beneficial to guarantee the performance of the battery pack. In addition, this embodiment adopts the process of directly bending the lugs between the battery cells 101 to be horizontally stacked and then riveted, without the need for other auxiliary materials. The structure is simple and easy to operate, which is beneficial to save production costs and improve production efficiency.
本实施例技术方案既适合于电芯单体101之间的串联、并联还适合串联与并联的组合。The technical solution of this embodiment is not only suitable for the series connection and parallel connection between the battery cells 101 but also suitable for the combination of the series connection and the parallel connection.
附图说明Description of drawings
此处所说明的附图用来提供对本实用新型的进一步理解，构成本申请的一部分，并不构成对本实用新型的不当限定。The accompanying drawings described here are used to provide a further understanding of the utility model, constitute a part of the application, and do not constitute an improper limitation of the utility model.
图1为本实用新型实施例1提供的一种采用极耳之间铆接连接的锂离子电池组的连接结构示意图；Fig. 1 is a schematic diagram of the connection structure of a lithium-ion battery pack provided by embodiment 1 of the present invention by riveting connections between tabs;
图2为本实用新型实施例1中图1中的局部D的局部结构放大图。Fig. 2 is an enlarged view of the partial structure of part D in Fig. 1 in Embodiment 1 of the present utility model.
附图标记：Reference signs:
101：电芯单体； 201：第一刚性金属条；101: single battery cell; 201: the first rigid metal strip;
202：第二刚性金属条； 301：第一极耳；202: the second rigid metal strip; 301: the first tab;
302：第二极耳； 401：铆钉。302: second tab; 401: rivets.
具体实施方式Detailed ways
下面将结合附图以及具体实施例来详细说明本实用新型，在此本实用新型的示意性实施例以及说明用来解释本实用新型，但并不作为对本实用新型的限定。The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments. The schematic embodiments and descriptions of the utility model are used to explain the utility model, but not as a limitation to the utility model.
参见图1-2所示，本实施例提供了一种锂离子电池组。其主要包括：按照预定的串联或者并联或者串联与并联的结合方式电性连接组合在一起的多个电芯单体101。Referring to Fig. 1-2, this embodiment provides a lithium-ion battery pack. It mainly includes: a plurality of battery cells 101 that are electrically connected and combined according to a predetermined combination of series or parallel or series and parallel.
在各电芯单体101的宽度端部分别伸出有极耳(正极耳、负极耳)。作为本实施例的示意，其中正极耳采用表面镀有镍层的铜片，负极耳采用铝片制成。Tabs (positive tabs, negative tabs) protrude from width ends of each battery cell unit 101 . As an illustration of this embodiment, the positive tab is made of copper plated with a nickel layer, and the negative tab is made of aluminum.
其中采用表面镀有镍层的铜片，该镍层能作为防止铜片氧化的保护层，以避免铜片氧化导致内阻增大，导电性能变差的问题。Among them, the copper sheet with a nickel layer plated on the surface can be used as a protective layer to prevent the oxidation of the copper sheet, so as to avoid the problems of increased internal resistance and poor conductivity caused by the oxidation of the copper sheet.
本实施例电池组内的各电芯单体101通过极耳与极耳之间的连接而实现预定的电池组的电路连接关系：串联或者并联或者两者的结合。Each battery cell unit 101 in the battery pack in this embodiment realizes a predetermined circuit connection relationship of the battery pack through the connection between tabs: series connection or parallel connection or a combination of both.
为了描述方便，在本实施例中，将电池组内任意通过极耳连接的两电芯单体101的其中之一记为第一电芯单体101，另一记为第二电芯单体101。将该电芯单体101的相互连接的两极耳中的之一第一极耳301(位于第一电芯单体101上)，另一记为第二极耳302(位于第二电芯单体101上)。在本实施例中，使第一极耳301、第二极耳302的第一端均呈垂直状地直立在电芯单体101的宽度端部，第二端分别被弯折成水平状且弯折后的第二端相互水平相互层叠在一起，在水平层叠的第一极耳301、第二极耳302的第二端垂直贯穿至少一铆钉401，从而使两极耳朵铆接在一起。其中上述的第一端为靠近电芯单体101的端部，第二端为远离电芯单体101的末端。For the convenience of description, in this embodiment, any one of the two battery cells 101 connected through tabs in the battery pack is denoted as the first battery cell 101, and the other is denoted as the second battery cell 101. One of the two pole ears connected to each other of the cell unit 101 is the first tab 301 (located on the first cell unit 101), and the other is denoted as the second tab 302 (located on the second cell unit). body 101). In this embodiment, the first ends of the first tab 301 and the second tab 302 are vertically erected on the width end of the battery cell 101, and the second ends are respectively bent into a horizontal shape and The bent second ends are horizontally stacked together, and at least one rivet 401 is vertically penetrated through the second ends of the horizontally stacked first tab 301 and second tab 302 , so that the two tabs are riveted together. The above-mentioned first end is an end close to the battery cell 101 , and the second end is an end far away from the battery cell 101 .
各电芯单体101分别通过以上的极耳铆接连接方式而实现电芯单体101之间的连接组成一锂离子电池组。Each cell unit 101 is connected to each other by the above tab riveting connection to form a lithium-ion battery pack.
通过与作为本锂离子电池组的正极、负极的两极耳连接的放电接口即可利用该锂离子电池组实现对外放电。The lithium-ion battery pack can be used to realize external discharge through the discharge interface connected to the positive and negative poles of the lithium-ion battery pack.
作为本实施例的示意，本实施例的放电接口可以分别采用分别与正极接口、负极接口连接的第一刚性金属条201、第二刚性金属条202与与作为本锂离子电池组的正极、负极的两极耳连接。具体是：第一刚性金属条201、第二刚性金属条202分别水贯穿连接放电接口正极接口、负极接口水平伸出在电池组的宽度端部，通过水平贯穿的铆钉401将水平放置的第一刚性金属条201、第二刚性金属条202与作为当前锂离子电池组的正极、负极的两极耳相铆接。As an illustration of this embodiment, the discharge interface of this embodiment can respectively adopt the first rigid metal strip 201, the second rigid metal strip 202 connected to the positive interface and the negative interface respectively, and the positive and negative electrodes of the lithium-ion battery pack. The two-pole ear connection. Specifically: the first rigid metal strip 201 and the second rigid metal strip 202 respectively penetrate and connect the positive electrode interface and the negative electrode interface of the discharge interface horizontally protruding from the width end of the battery pack, and the horizontally placed first The rigid metal strip 201 and the second rigid metal strip 202 are riveted to the tabs of the positive pole and the negative pole of the current lithium-ion battery pack.
作为本实施例的示意，本实施例的第一刚性金属条201、第二刚性金属条202均为铜条。As an illustration of this embodiment, the first rigid metal strip 201 and the second rigid metal strip 202 in this embodiment are both copper strips.
由上可见，采用上述技术方案，相对于锡焊、点焊、超声波焊接等连接方案，本实施例锂离子电池组内各电芯体之间，电池组与放电接口之间均采用铆接工艺，应用本实施例技术方案能够避免加热对电芯单体101的损害导致的不良率，有利于保障电池组性能。另外，本实施例采用电芯单体101之间的极耳直接弯折水平层叠然后铆接连接工艺，而不需要其他辅助材料，其结构简单，易于操作，有利于节省生成成本，提高生产效率。It can be seen from the above that, with the above-mentioned technical scheme, relative to the connection schemes such as soldering, spot welding, and ultrasonic welding, the riveting process is adopted between the battery cells in the lithium-ion battery pack in this embodiment, and between the battery pack and the discharge interface. Applying the technical solution of this embodiment can avoid the failure rate caused by the damage to the battery cells 101 by heating, which is beneficial to ensure the performance of the battery pack. In addition, this embodiment adopts the process of directly bending the lugs between the battery cells 101 to be horizontally stacked and then riveted, without the need for other auxiliary materials. The structure is simple and easy to operate, which is beneficial to save production costs and improve production efficiency.
本实施例技术方案既适合于电芯单体101之间的串联、并联还适合串联与并联的组合。The technical solution of this embodiment is not only suitable for the series connection and parallel connection between the battery cells 101 but also suitable for the combination of the series connection and the parallel connection.
参见图1-2所示，当电芯单体101之间相互串联时，具体是，将任意相邻的两电芯单体101的正极片与负极片相互连接，将位于电池组最外侧的两相对的电芯单体101的其中一位于其他电芯单体101连接的正极片、负极片作为本电池组的正极、负极。Referring to Figure 1-2, when the battery cells 101 are connected in series, specifically, the positive and negative electrodes of any two adjacent battery cells 101 are connected to each other, and the outermost One of the two opposing battery cells 101 is located at the positive electrode and the negative electrode connected to the other battery cell 101 as the positive electrode and the negative electrode of the battery pack.
当电芯单体101之间相互串联时，具体是，所有电芯单体101的正极耳与正极耳连接，负极耳与负极耳连接。此时，可以但不限于将个别电芯单体101的极耳设计的较长，以便其水平弯折的第二端能与其他电芯单体101的极耳的第二端相平，以便于铆接连接。When the battery cells 101 are connected in series, specifically, the positive tabs of all the battery cells 101 are connected to the positive tabs, and the negative tabs are connected to the negative tabs. At this time, the lugs of individual battery cells 101 can be designed longer, but not limited to, so that the second ends of the horizontally bent ends can be flat with the second ends of the tabs of other battery cells 101, so that For riveted connections.
以上所述的实施方式，并不构成对该技术方案保护范围的限定。任何在上述实施方式的精神和原则之内所作的修改、等同替换和改进等，均应包含在该技术方案的保护范围之内。The implementation methods described above do not constitute a limitation to the scope of protection of the technical solution. Any modifications, equivalent replacements and improvements made within the spirit and principles of the above implementation methods shall be included in the protection scope of the technical solution.
Claims (6)
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| CN201420736383.4U CN204204977U (en) | 2014-11-28 | 2014-11-28 | Li-ion batteries piles |
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| CN201420736383.4U CN204204977U (en) | 2014-11-28 | 2014-11-28 | Li-ion batteries piles |
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| CN204204977U true CN204204977U (en) | 2015-03-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10243382B2 (en) | 2017-05-19 | 2019-03-26 | Dongguan Juxing Power Co., Ltd | Car jump starter power bank and battery pack connecting method thereof |
| WO2020253609A1 (en) * | 2019-06-17 | 2020-12-24 | Dongguan Amperex Technology Limited | Battery assembly |
-
2014
- 2014-11-28 CN CN201420736383.4U patent/CN204204977U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10243382B2 (en) | 2017-05-19 | 2019-03-26 | Dongguan Juxing Power Co., Ltd | Car jump starter power bank and battery pack connecting method thereof |
| WO2020253609A1 (en) * | 2019-06-17 | 2020-12-24 | Dongguan Amperex Technology Limited | Battery assembly |
| EP3984081A4 (en) * | 2019-06-17 | 2022-08-31 | Dongguan Amperex Technology Limited | Battery assembly |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150311 |
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| CX01 | Expiry of patent term |