CN220368111U - 电池 - Google Patents
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000570 Cupronickel Inorganic materials 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
- H01M50/291—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by their shape
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
- H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
- H01M50/293—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by the material
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
- H01M50/51—Connection only in series
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- H01—ELECTRIC ELEMENTS
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- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
- H01M50/512—Connection only in parallel
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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
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Abstract
本实用新型涉及新能源技术领域，具体提供一种电池，旨在解决现有电池壳体易发生腐蚀的问题。为此目的，本实用新型电池包括：壳体；极组，所述极组设有正极耳和负极耳；正极柱，所述正极柱与所述正极耳连接；负极柱，所述负极柱与所述负极耳连接；所述正极柱和所述壳体之间及所述负极柱和所述壳体之间均设有绝缘件。正极柱与壳体之间及负极柱与壳体之间都被绝缘件隔离，使极柱与壳体之间不会电导通，使二者之间不会存在微电流，保证壳体不被腐蚀。
Description
技术领域
本实用新型涉及新能源技术领域，具体提供一种电池。
背景技术
目前随着动力电池技术的发展，在追求电池性能不断提高的同时，电池安全越来越被重视。如何保证在电池整个生命周期内，电池的性能和安全都得到有效保证是一直在研究的课题。
电池在使用过程中，经常会发生壳体嵌锂腐蚀，继而引发壳体破裂，导致电池失效。铝壳腐蚀通常是由于壳体对负极的电位较低，从而达到铝壳的嵌锂电位。
高压电池，尤其是由铝壳或铝合金封装的包含两个电芯共用壳体的高压电池，壳体与负极端之间具有较低的壳电压，易达到铝壳的嵌锂电位，存在发生壳体腐蚀的风险。
因此，相关领域亟需一种电池及车辆来解决上述技术问题。
实用新型内容
本实用新型旨在解决上述技术问题，即，解决现有电池壳体易发生腐蚀的问题。
在第一方面，本实用新型提供一种电池，其包括：壳体；极组，所述极组设有正极耳和负极耳；正极柱，所述正极柱与所述正极耳连接；负极柱，所述负极柱与所述负极耳连接；所述正极柱和所述壳体之间及所述负极柱和所述壳体之间均设有绝缘件。
在上述电池的具体实施方式中，所述极组包括多个电芯，所述壳体设有多个腔室，每个所述腔室内均设有一个所述电芯。
在上述电池的具体实施方式中，所述电芯及所述腔室的数量均为两个。
在上述电池的具体实施方式中，所述壳体内设置有隔板，所述隔板将所述壳体分隔成两个所述腔室。
在上述电池的具体实施方式中，所述电池还包括设置于所述隔板上的连接柱，所述连接柱分别与相邻两个电芯的极耳连接，所述连接柱与所述通孔之间设有绝缘件。
在上述电池的具体实施方式中，所述连接柱包括相连接的正极连接柱和负极连接柱，相邻两个电芯中一个电芯的正极耳与所述正极连接柱连接，另一个电芯的负极耳与所述负极连接柱连接。
在上述电池的具体实施方式中，多个所述电芯沿所述电芯的长度方向排列设置；或，多个所述电芯沿所述电芯的厚度方向排列设置。
在上述电池的具体实施方式中，所述电池还包括设置于所述壳体内壁上的绝缘膜。
在上述电池的具体实施方式中，所述绝缘件的电阻值范围为100MΩ至2GΩ。
在上述电池的具体实施方式中，所述正极柱与所述壳体之间的绝缘件的电阻值范围为100MΩ至500MΩ，所述负极柱与所述壳体之间的绝缘件的电阻值范围为大于1GΩ，所述连接柱与所述隔板之间的绝缘件的电阻值为大于1GΩ。
在采用上述技术方案的情况下，本实用新型的正极柱与壳体之间及负极柱与壳体之间都被绝缘件隔离，使极柱与壳体之间不会电导通，进而不会存在微电流，保证壳体不被腐蚀。
此外，通过绝缘膜的设置，可以隔绝壳体和电解液，使电解液的离子无法与壳体发生化学反应，保证电解液不被分解。
附图说明
下面结合附图来描述本实用新型的优选实施方式，附图中：
图1是本实用新型提供的第一实施例的电池的结构示意图；
图2是本实用新型提供的第二实施例的电池的结构示意图。
附图标记列表：
1、电芯；2、壳体；3、正极柱；4、负极柱；5、绝缘件；6、连接柱；61、正极连接柱；62、负极连接柱；7、隔板；8、绝缘膜。
具体实施方式
下面参照附图来描述本实用新型的优选实施方式。本领域技术人员应当理解的是，这些实施方式仅仅用于解释本实用新型的技术原理，并非旨在限制本实用新型的保护范围。
需要说明的是，在本实用新型的描述中，术语“上”、“下”、“左”、“右”、“内”、“外”等指示的方向或位置关系的术语是基于附图所示的方向或位置关系，这仅仅是为了便于描述，而不是指示或暗示所述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实用新型的限制。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。
此外，还需要说明的是，在本实用新型的描述中，除非另有明确的规定和限定，术语“安装”、“设置”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连，还可以是两个元件内部的连通。对于本领域技术人员而言，可根据具体情况理解上述术语在本实用新型中的具体含义。
高压电池，尤其是由铝壳或铝合金封装的包含两个极组共用壳体的高压锂离子电池，壳体与负极之间具有较低的壳电压，易达到铝壳的嵌锂电位，存在发生壳体腐蚀的风险。为了解决壳体被腐蚀的问题，本实施例公开了一种车辆，其包括车辆本体及设置在车辆本体上的电池，该车辆既可以为普通的燃油车辆，也可以为电车或油电混车辆。车辆为燃油车辆时，电池被配置为给车辆的用电设施供电。车辆为电车或油电混车辆，此时电池被配置为给车辆的用电设施供电以及作为车辆的动力电池。
如图1所示，电池包括壳体2、极组、正极柱3、负极柱4及绝缘件5，壳体2的材质优选为铝或铝合金。极组引出有正极耳和负极耳，极组设置于壳体2内，正极柱3和负极柱4都设置在壳体2上，且穿设于壳体2设置。正极柱3和负极柱4可以位于同一侧，也可以不在同一侧。正极耳连接于正极柱3，具体通过焊接的方式连接；负极耳连接于负极柱4，具体通过焊接的方式连接。其中正极柱3的材料为铝或铝合金，负极柱4的材质为铜或铜镀镍。
正极柱3和壳体2之间及负极柱4和壳体2之间设置有绝缘件5，具体地，在正极柱3和负极柱4的外侧均包覆有绝缘件5，以使正极柱3与壳体2之间及负极柱4与壳体2之间都被绝缘件5隔离，使极柱与壳体2之间不会电导通，使二者之间不会存在微电流；保证壳体2不被腐蚀。
极组包括一个或多个电芯1，极组包括一个电芯1时，壳体2内仅设置有一个腔室，极组的正极耳和负极耳为该电芯1的正极耳和负极耳。在腔室内注有电解液。
当极组包括多个电芯1时，多个电芯1优选串联设置，亦可以并联设置，以下以串联为例进行说明。相邻两个电芯1，靠近正极侧的电芯1的负极连接于靠近负极侧的电芯1的正极，具体通过连接柱6连接，连接柱6包括相连接的正极连接柱61和负极连接柱62，靠近负极侧的电芯1的正极耳连接于正极连接柱61，靠近正极侧的电芯1的负极耳连接于负极连接柱62。正极连接柱61和负极连接柱62通过焊接的方式连接，正极连接柱61的材质与正极柱3的材质相同，负极连接柱62的材质与负极柱4的材质相同。作为优选，本实施例中电芯1的数量为两个，壳体2包括两个腔室，也即壳体2内设置有一个隔板7。
壳体2设置有多个腔室，且与电芯1一一对应设置，每个腔室内均设置有至少一个电芯1。壳体2内设置有隔板7，隔板7将壳体2分割成多个腔室；隔板7的数量较电芯1的数量少一个。相邻两个电芯1的连接处设有隔板7，隔板上设有通孔，连接柱部分收容于所述通孔内，也即连接柱6穿设于隔板7设置。连接柱6与隔板7之间设置有绝缘件5，具体地，在连接柱6的外侧包覆有绝缘件5。隔板7与壳体2的内壁及绝缘件5密封连接，隔板7的具体材质为铝或铝合金，其与壳体2的材质相同。隔板7与壳体2之间具体通过焊接的方式连接，也可以通过粘接的方式连接。壳体2具体分体设计，一个腔室对应一个部分，目的是便于进行电芯1的安装及注入电解液。
本实施例中，多个电芯1沿电芯1的长度方向依次布设，具体参照图1；在其它实施例中，多个电芯1也可以沿电芯1的宽度或厚度方向依次布设，具体参照图2。厚度方向为与壳体2面积最大的面相垂直的方向。
正极柱3上的绝缘件5的阻值最小。其中，正极柱3绝缘件5的阻值为R1，其中，100MΩ<R1<300MΩ；负极柱4及连接柱6上绝缘件5的阻值均大于1GΩ，且连接柱6上的绝缘件5的阻值大于1GΩ。只有正极柱3上绝缘件5的阻值小于其他位置的绝缘件5的阻值，才可以保证壳体2与负极间的电压不会在0.3V以下，使壳体2不会达到嵌锂电位，从而使壳体2发生腐蚀的热力学条件无法满足，从而保证壳体2不被腐蚀。
绝缘件5的材质为聚乙烯、聚丙烯、聚氯乙烯、聚苯乙烯和涤纶树脂中的一种或多种的混合物，具体地，绝缘件5的材质要有一定的弹性，以便其套设在正极柱3、负极柱4或连接柱6上，且可以保证其与壳体2弹性抵接，能够保证密封性。
电池还包括设置于壳体2内壁上的绝缘膜8，本实施例中仅在负极侧的腔室的内侧壁上附有绝缘膜8，具体地，在负极侧的壳体2的内壁及隔板7上附有绝缘膜8。绝缘膜8的材质为聚丙烯、陶瓷、聚合物树脂、有机粘结剂和绝缘漆中的一种或多种的混合物，具体可以通过喷涂、电镀、辊压或者涂布的方式在壳体2内壁及隔板7上附着绝缘膜8。绝缘膜8可以隔绝壳体2和电解液，使电解液的离子无法与壳体2发生化学反应，保证电解液不被分解。
至此，已经结合附图所示的优选实施方式描述了本实用新型的技术方案，但是，本领域技术人员容易理解的是，本实用新型的保护范围显然不局限于这些具体实施方式。在不偏离本实用新型的原理的前提下，本领域技术人员可以对相关技术特征作出等同的更改或替换，这些更改或替换之后的技术方案都将落入本实用新型的保护范围之内。
Claims (10)
1.一种电池，其特征在于，其包括：
壳体；
极组，所述极组设有正极耳和负极耳；
正极柱，所述正极柱与所述正极耳连接；
负极柱，所述负极柱与所述负极耳连接；
所述正极柱和所述壳体之间及所述负极柱和所述壳体之间均设有绝缘件。
2.根据权利要求1所述的电池，其特征在于，所述极组包括多个电芯，所述壳体设有多个腔室，每个所述腔室内均设有一个所述电芯。
3.根据权利要求2所述的电池，其特征在于，所述电芯及所述腔室的数量均为两个。
4.根据权利要求3所述的电池，其特征在于，所述壳体内设置有隔板，所述隔板将所述壳体分隔成两个所述腔室。
5.根据权利要求4所述的电池，其特征在于，所述电池还包括设置于所述隔板上的连接柱，所述连接柱分别与相邻两个电芯的极耳连接，所述连接柱与所述隔板的通孔之间设有绝缘件。
6.根据权利要求5所述的电池，其特征在于，所述连接柱包括相连接的正极连接柱和负极连接柱，相邻两个电芯中一个电芯的正极耳与所述正极连接柱连接，另一个电芯的负极耳与所述负极连接柱连接。
7.根据权利要求2所述的电池，其特征在于，多个所述电芯沿所述电芯的长度方向排列设置；或，多个所述电芯沿所述电芯的厚度方向排列设置。
8.根据权利要求2所述的电池，其特征在于，所述电池还包括设置于所述壳体内壁上的绝缘膜。
9.根据权利要求1所述的电池，其特征在于，所述绝缘件的电阻值范围为100MΩ至2GΩ。
10.根据权利要求6所述的电池，其特征在于，所述正极柱与所述壳体之间的绝缘件的电阻值范围为100MΩ至500MΩ，所述负极柱与所述壳体之间的绝缘件的电阻值范围为大于1GΩ，所述连接柱与所述隔板之间的绝缘件的电阻值为大于1GΩ。
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