CN219144370U - Cylindrical sodium ion battery module - Google Patents

Cylindrical sodium ion battery module Download PDF

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CN219144370U
CN219144370U CN202222553397.XU CN202222553397U CN219144370U CN 219144370 U CN219144370 U CN 219144370U CN 202222553397 U CN202222553397 U CN 202222553397U CN 219144370 U CN219144370 U CN 219144370U
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upper cover
sodium ion
ion battery
cylindrical
battery
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王真
唐怀远
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Tianjin Runya Technology Co ltd
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Liaoning Dengsai New Energy Co ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
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Abstract

一种圆柱钠离子电池模组,包括壳体、上盖和设置在壳体内的多个圆柱钠离子电芯,多个圆柱钠离子电芯的电芯正极、电芯负极通过连接桥相互连通形成钠离子电芯组,上盖的表面设有正极端子和负极端子,正极端子和负极端子位于上盖的表面;钠离子电芯组与正极端子、负极端子电连接,电池模组上盖上设置电极标识;上盖封装在壳体的上口上。本实用新型采用双头出极耳设计,大大降低了电池内阻,因此可以设计成大容量圆柱电池,采用圆柱电池结构,可以缓解电芯内部应力变形,大大延长电池寿命,可以满足10分钟充满80%容量的需求,对于推广短程新能源汽车非常有利。

Figure 202222553397

A cylindrical sodium-ion battery module, comprising a casing, an upper cover, and a plurality of cylindrical sodium-ion cells arranged in the casing, the positive electrodes and the negative electrodes of the multiple cylindrical sodium-ion cells are connected to each other through connecting bridges to form For the sodium ion battery pack, the surface of the upper cover is provided with a positive terminal and a negative terminal, and the positive terminal and the negative terminal are located on the surface of the upper cover; the sodium ion battery pack is electrically connected with the positive terminal and the negative terminal, and the battery module cover is provided with Electrode identification; the upper cover is sealed on the upper opening of the shell. The utility model adopts the design of double-headed tabs, which greatly reduces the internal resistance of the battery, so it can be designed as a large-capacity cylindrical battery. The cylindrical battery structure can relieve the internal stress and deformation of the battery, greatly prolong the battery life, and can be fully charged in 10 minutes. The demand for 80% capacity is very beneficial to the promotion of short-range new energy vehicles.

Figure 202222553397

Description

一种圆柱钠离子电池模组A cylindrical sodium-ion battery module

技术领域technical field

本实用新型涉及电池领域,具体的说涉及一种圆柱钠离子电池模组。The utility model relates to the field of batteries, in particular to a cylindrical sodium ion battery module.

背景技术Background technique

目前的低速电动车辆,电动客车,电动卡车普遍采用铅酸电池或锂离子电池作为电能来源,铅酸电池重量和体积大、冬季出行续航里程不足的缺点给使用者带来诸多不便;锂离子电池因为成本高、安全性差,低温性差等缺点,限制了锂离子电池的应用与推广。Current low-speed electric vehicles, electric buses, and electric trucks generally use lead-acid batteries or lithium-ion batteries as the source of electric energy. Due to the disadvantages of high cost, poor safety, and poor low temperature performance, the application and promotion of lithium-ion batteries are limited.

在此背景下,人们纷纷开发钠离子电池作为储能电池与动力电池。钠离子电池经过多年的研发与技术积累,目前已进入产业化、规模化应用阶段,产品的低温性能、高倍率充放电性能、循环性能等已得到大量的测试验证,具备与铅酸电池和锂离子电池抗衡的市场竞争力。In this context, people have developed sodium-ion batteries as energy storage batteries and power batteries. After years of research and development and technical accumulation, sodium-ion batteries have entered the stage of industrialization and large-scale application. The low-temperature performance, high-rate charge-discharge performance, and cycle performance of the product have been verified by a large number of tests. They are comparable to lead-acid batteries and lithium batteries. Ion batteries compete against the market competitiveness.

公知的钠离子电池分为三种结构,即:圆柱钠离子电池、软包钠离子电池、方形铝壳钠离子电池。软包钠离子电池容量低、膨胀率高、寿命短,因此无法大规模采用;方形铝壳钠离子电池因制造工艺复杂、成本较高,使得钠离子电池失去性价比高的竞争优势,因此也无法大规模采用;市场上圆柱钠离子电池往往采用钢壳结构,容量范围1Ah~5Ah,容量太低,该结构的钠离子电池如果在储能系统与低速动力汽车上使用,因此需要大量电池进行串联、并联,这不仅使电池组的组合工艺难度增大,同时,大大增加电池组管理系统的成本,而且电池组的安全性也要降低。The known sodium-ion batteries are divided into three structures, namely: cylindrical sodium-ion batteries, soft-pack sodium-ion batteries, and square aluminum-shell sodium-ion batteries. Soft-pack sodium-ion batteries have low capacity, high expansion rate, and short life, so they cannot be used on a large scale; square aluminum-shell sodium-ion batteries lose their competitive advantage of cost-effectiveness due to the complicated manufacturing process and high cost, so they cannot Large-scale adoption; cylindrical sodium-ion batteries on the market often adopt a steel shell structure, with a capacity range of 1Ah~5Ah, and the capacity is too low. If the sodium-ion battery with this structure is used in energy storage systems and low-speed power vehicles, a large number of batteries are required to be connected in series , parallel connection, which not only increases the difficulty of the combination process of the battery pack, but also greatly increases the cost of the battery pack management system, and also reduces the safety of the battery pack.

迄今,未见大容量钠离子电池模组(容量≥10Ah)的文献报道和实际应用。So far, there are no literature reports and practical applications of large-capacity sodium-ion battery modules (capacity ≥ 10Ah).

发明内容Contents of the invention

本实用新型的目的是提供一种圆柱钠离子电池模组,该模组具有成本较低、寿命长、安全可靠的使用性能。The purpose of the utility model is to provide a cylindrical sodium ion battery module, which has low cost, long service life, safe and reliable performance.

本实用新型的目的是以如下方式实现的:一种圆柱钠离子电池模组,包括壳体、上盖和设置在壳体内的多个圆柱钠离子电芯,多个圆柱钠离子电芯的电芯正极、电芯负极通过连接桥相互连通形成钠离子电芯组,上盖的表面设有正极端子和负极端子,正极端子和负极端子位于上盖的表面;钠离子电芯组与正极端子、负极端子电连接,电池模组上盖上设置电极标识;上盖封装在壳体的上口上。The purpose of this utility model is achieved in the following manner: a cylindrical sodium ion battery module, including a housing, an upper cover, and a plurality of cylindrical sodium ion batteries arranged in the housing, and batteries for a plurality of cylindrical sodium ion batteries The positive electrode of the core and the negative electrode of the battery are connected to each other through the connecting bridge to form a sodium ion battery pack. The surface of the upper cover is provided with a positive terminal and a negative terminal, and the positive terminal and the negative terminal are located on the surface of the upper cover; the sodium ion battery pack is connected to the positive terminal, The negative terminal is electrically connected, and the battery module cover is provided with an electrode mark; the cover is packaged on the upper opening of the casing.

在上盖内部设置有BMS(电池管理系统)电路板,圆柱钠离子电芯的电芯正极、电芯负极通过导线与BMS电路板连接, BMS电路板的正极连接件、负极连接件与上盖上的正极端子、负极端子对应连接。A BMS (battery management system) circuit board is installed inside the upper cover. The positive pole and negative pole of the battery cell of the cylindrical sodium ion battery are connected to the BMS circuit board through wires, and the positive and negative connectors of the BMS circuit board are connected to the upper cover. Connect the positive terminal and negative terminal correspondingly.

为了保证模组的结构稳定性,在圆柱钠离子电芯之间的缝隙中,以及圆柱钠离子电芯与壳体之间的缝隙中设置有间隙缓冲垫。In order to ensure the structural stability of the module, a gap cushion is provided in the gap between the cylindrical sodium ion cells, and in the gap between the cylindrical sodium ion cells and the housing.

为了保证模组的结构稳定性,在上盖内侧面设置若干上盖缓冲垫。In order to ensure the structural stability of the module, several upper cover buffer pads are arranged on the inner side of the upper cover.

BMS电路板设在上盖内侧面上,并通过螺钉固定在上盖上。The BMS circuit board is arranged on the inner side of the upper cover, and is fixed on the upper cover by screws.

连接桥为镀镍铜片或镍片,正极端子、负极端子为镀镍铜或镍材质。The connection bridge is made of nickel-plated copper or nickel, and the positive and negative terminals are made of nickel-plated copper or nickel.

本实用新型的有益效果是:The beneficial effects of the utility model are:

1.本实用新型采用双头出极耳设计,大大降低了电池内阻,因此可以设计成大容量圆柱电池,电池容量覆盖10Ah~500Ah。其结构特点是:电池采用同侧出电池端子(电池正/负极)的圆柱形电芯,电池容量为10Ah~500Ah。1. The utility model adopts the design of double-headed tabs, which greatly reduces the internal resistance of the battery, so it can be designed as a large-capacity cylindrical battery, and the battery capacity covers 10Ah~500Ah. Its structural features are: the battery adopts a cylindrical battery cell with battery terminals (battery positive/negative pole) on the same side, and the battery capacity is 10Ah~500Ah.

2.本实用新型可以采用圆柱电池结构,可以缓解电芯内部应力变形,大大延长电池寿命,实验室据表明,寿命可达6000次以上,可以满足储能电池的需求。2. The utility model can adopt a cylindrical battery structure, which can alleviate the internal stress deformation of the battery core and greatly prolong the battery life. According to the laboratory, the life can reach more than 6000 times, which can meet the needs of energy storage batteries.

3.本实用新型采用卷绕工艺,减少了制造环节,节约了制造成本,投入产出比远高于普通方形铝壳电池。3. The utility model adopts the winding process, which reduces the manufacturing links and saves the manufacturing cost, and the input-output ratio is much higher than that of ordinary square aluminum shell batteries.

4.本实用新型拥有更好的快充快放性能,可以满足10分钟充满80%容量的需求,对于推广短程新能源汽车非常有利。4. The utility model has better fast charging and quick discharging performance, which can meet the demand of charging 80% of the capacity in 10 minutes, which is very beneficial for the promotion of short-range new energy vehicles.

附图说明Description of drawings

图1为本实用新型的结构示意图。Fig. 1 is the structural representation of the utility model.

图2为钠离子电芯组示意图。Fig. 2 is a schematic diagram of a sodium ion battery pack.

图3为上盖主视图。Figure 3 is a front view of the upper cover.

图4为上盖俯视图。Figure 4 is a top view of the upper cover.

图5为本实用新型的外形图。Fig. 5 is an outline view of the utility model.

图中:1-负极端子;2-电极标识;3-连接桥;4-上盖;5-正极端子;6-导线;7-螺钉;8-螺纹孔;9-壳体;10-BMS电路板;11-电芯正极;12-电芯负极;13-上盖缓冲垫;14-间隙缓冲垫;15-圆柱钠离子电芯。In the figure: 1-negative terminal; 2-electrode identification; 3-connecting bridge; 4-top cover; 5-positive terminal; 6-wire; 7-screw; 8-threaded hole; 9-housing; 10-BMS circuit Plate; 11-cell positive pole; 12-cell negative pole; 13-cover cushion; 14-gap cushion; 15-cylindrical sodium ion battery.

具体实施方式Detailed ways

为使本实用新型的目的、技术方案更加清楚,下面将结合附图对本实用新型的技术方案进行清楚、完整地描述,显然,所描述的实施例是本实用新型的一部分实施例,而不是全部的实施例。通常在此处附图中描述和示出的实施例的组件可以以各种不同的配置来布置和设计。In order to make the purpose and technical solution of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are some embodiments of the utility model, not all of them. the embodiment. The components of the embodiments generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

对本实用新型实施例的详细描述并非旨在限制要求保护的范围,而是仅仅表示本实用新型的选定实施例。基于本实用新型中的实施例,本领域的技术工作者在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本实用新型保护的范围。The detailed description of the embodiments of the present invention is not intended to limit the scope of claims, but merely represents selected embodiments of the present invention. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative work belong to the protection scope of the present utility model.

应注意到:相似的标号和字母在下面的附图中表示类似项,因此,一旦某一项在一个附图中被定义,则在随后的附图中不需要对其进行进一步定义和解释。It should be noted that like numerals and letters denote similar items in the following figures, therefore, once an item is defined in one figure, it does not require further definition and explanation in subsequent figures.

参照图1-图5,一种圆柱钠离子电池模组,包括壳体9、上盖4和设置在壳体9内的多个圆柱钠离子电芯15,多个圆柱钠离子电芯15的电芯正极11、电芯负极12通过连接桥3串联、并联或者串并联通过焊接连在一起,相互连通形成钠离子电芯组,实施例中例出的是串联的形式,连接桥3为镀镍铜片或镍片;上盖4的表面设有正极端子5和负极端子1,正极端子5、负极端子1为镀镍铜或镍材质,正极端子5和负极端子1位于上盖的表面,电池模组上盖4上设置表示正极、负极的电极标识2;在上盖4内部设置有BMS电路板10,BMS电路板10设在上盖4内侧面上,并通过螺钉固定在上盖4上;圆柱钠离子电芯15的电芯正极11、电芯负极12通过导线6与BMS电路板10连接, BMS电路板10的正极连接件、负极连接件与上盖4上的正极端子5、负极端子1对应连接;在圆柱钠离子电芯15之间的缝隙中,以及圆柱钠离子电芯15与壳体9之间的缝隙中设置有间隙缓冲垫14,间隙缓冲垫14可以选用橡胶或海绵等具有弹性的材质,或者打膨胀胶,以防止钠离子电芯之间发生相对位移;在上盖4内侧面设置若干上盖缓冲垫13,上盖缓冲垫13可以选用橡胶或海绵等具有弹性的材质,以防止钠离子电芯发生上下位移;上盖4封装在壳体9的上口上,上盖4通过螺钉7与壳体9的螺纹孔8连接固定在壳体9上。Referring to Figures 1-5, a cylindrical sodium ion battery module includes a housing 9, an upper cover 4, and a plurality of cylindrical sodium ion batteries 15 arranged in the housing 9, and a plurality of cylindrical sodium ion batteries 15 The battery positive electrode 11 and the battery negative electrode 12 are connected in series, parallel or series-parallel through the connecting bridge 3 and connected together by welding to form a sodium ion battery pack. Nickel copper sheet or nickel sheet; the surface of the upper cover 4 is provided with a positive terminal 5 and a negative terminal 1, the positive terminal 5 and the negative terminal 1 are made of nickel-plated copper or nickel, and the positive terminal 5 and the negative terminal 1 are located on the surface of the upper cover. The upper cover 4 of the battery module is provided with an electrode mark 2 indicating the positive pole and the negative pole; a BMS circuit board 10 is arranged inside the upper cover 4, and the BMS circuit board 10 is arranged on the inner side of the upper cover 4 and fixed to the upper cover 4 by screws. On: the battery positive pole 11 and the battery negative pole 12 of the cylindrical sodium ion battery 15 are connected to the BMS circuit board 10 through the wire 6, and the positive pole connector and the negative pole connector of the BMS circuit board 10 are connected to the positive pole terminal 5 on the upper cover 4, The negative terminal 1 is correspondingly connected; in the gap between the cylindrical sodium ion batteries 15, and in the gap between the cylindrical sodium ion batteries 15 and the housing 9, a gap buffer pad 14 is arranged, and the gap buffer pad 14 can be selected from rubber or Elastic material such as sponge, or play expansion glue, to prevent the relative displacement between sodium ion cell; Set some upper cover buffer pads 13 on the inner side of upper cover 4, upper cover buffer pad 13 can be selected rubber or sponge etc. for use. The elastic material is used to prevent the sodium ion cell from moving up and down; the upper cover 4 is packaged on the upper opening of the housing 9 , and the upper cover 4 is connected and fixed on the housing 9 through the screw 7 and the threaded hole 8 of the housing 9 .

钠离子电芯组通过BMS电路板10的保护电路输出充放电接口,保护电路对串联或并联后的钠离子电芯组进行过流、过温和过充等保护;BMS电路板10用于监测钠离子电芯的剩余电量,通过智能化管理,保证剩余电量维持在合理的范围内,防止由于过充电或过放电对钠离子电芯组造成损伤,延长电芯的使用寿命;BMS电路板10上设有温度传感器、电压/电流采样电路、均衡电路、微控制单元电路、充电场效应管电路、DC/DC(直流变直流)电路、通讯电路和整流/回馈单元。The sodium ion battery core group outputs the charge and discharge interface through the protection circuit of the BMS circuit board 10, and the protection circuit performs overcurrent, overtemperature and overcharge protection on the sodium ion battery core group connected in series or in parallel; the BMS circuit board 10 is used to monitor the sodium ion battery pack. The remaining power of the ion battery, through intelligent management, ensures that the remaining power is maintained within a reasonable range, prevents damage to the sodium ion battery pack due to overcharging or overdischarging, and prolongs the service life of the battery; BMS circuit board 10 It is equipped with temperature sensor, voltage/current sampling circuit, equalization circuit, micro control unit circuit, charging FET circuit, DC/DC (direct current to direct current) circuit, communication circuit and rectification/feedback unit.

以上所述仅为本实用新型的优选实施例而已,并不用于限制本实用新型,对于本领域的技术人员来说,本实用新型可以有各种更改和变化。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、改进等,均应包含在本实用新型的保护范围之内。The above descriptions are only preferred embodiments of the utility model, and are not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present utility model shall be included in the protection scope of the present utility model.

Claims (6)

1. The utility model provides a cylinder sodium ion battery module, includes casing (9), upper cover (4) and sets up a plurality of cylinder sodium ion electric core (15) in casing (9), its characterized in that: the battery cell positive electrodes (11) and the battery cell negative electrodes (12) of the cylindrical sodium ion battery cells (15) are mutually communicated through the connecting bridge (3) to form a sodium ion battery cell group, the surface of the upper cover (4) is provided with a positive electrode terminal (5) and a negative electrode terminal (1), the sodium ion battery cell group is electrically connected with the positive electrode terminal (5) and the negative electrode terminal (1), and the upper cover (4) of the battery module is provided with an electrode mark (2); the upper cover (4) is encapsulated on the upper opening of the shell (9).
2. The cylindrical sodium ion battery module according to claim 1, wherein: be provided with BMS circuit board (10) in upper cover (4) inside, battery core positive pole (11) of cylinder sodium ion battery core (15), battery core negative pole (12) are connected with BMS circuit board (10) through wire (6), and positive pole connecting piece, negative pole connecting piece of BMS circuit board (10) are connected with positive terminal (5), negative terminal (1) correspondence on upper cover (4).
3. The cylindrical sodium ion battery module according to claim 1, wherein: a gap buffer pad (14) is arranged in the gap between the cylindrical sodium ion battery cells (15) and the shell (9).
4. The cylindrical sodium ion battery module according to claim 1, wherein: a plurality of upper cover buffer pads (13) are arranged on the inner side surface of the upper cover (4).
5. The cylindrical sodium ion battery module according to claim 2, wherein: the BMS circuit board (10) is arranged on the inner side surface of the upper cover (4) and is fixed on the upper cover (4) through screws.
6. The cylindrical sodium ion battery module according to claim 1, wherein: the connecting bridge (3) is nickel plating copper sheet or nickel sheet, and the positive electrode terminal (5) and the negative electrode terminal (1) are nickel plating copper or nickel material.
CN202222553397.XU 2022-09-27 2022-09-27 Cylindrical sodium ion battery module Active CN219144370U (en)

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