CN201397868Y - 锂离子电池组自加热装置 - Google Patents
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Abstract
本实用新型公开了一种锂离子电池组自加热装置，包括继电器，所述继电器串联在发热线中间，所述发热线布置在所述电池组的电池之间，两端与电池组的正负极连接，所述继电器与电池组的保护电路连接。本实用新型提高了电池组在外界低温环境下的放电效率，改善了低温充电的安全性，可以广泛应用在电动车电池中，如高速纯电动轿车、混合动力公交车等项目上，通用性强，实用范围广，加工装配方便，结构简单，成本低。
Description
技术领域
本实用新型涉及一种加热装置，特别涉及一种锂离子电池组自加热装置。
背景技术
目前，由于锂离子电池具有电压高、容量大、体积小、质量轻，工作温度范围宽等优点，锂离子电池组已被广泛应用在各个领域，尤其应用于电动车辆领域。电动车辆的使用环境复杂，而锂离子电池对使用环境的温度较为敏感，0℃以下电池放电效率较低，而0℃以下充电则存在一定的安全隐患。目前，应用于电动车辆的锂离子电池组在低温环境下使用时，普遍没有加热系统，使用过程中电池组放电效率比较低，影响电池组的功率和使用寿命。
发明内容
本实用新型为解决公知技术中存在的技术问题而提供一种锂离子电池组自加热装置，该装置从根本上解决由于电池组低温充放电存在的安全隐患和电池组使用寿命的问题。
本实用新型为解决公知技术中存在的技术问题所采取的技术方案是：一种锂离子电池组自加热装置，包括继电器，所述继电器串联在发热线中间，所述发热线布置在所述电池组的电池之间，两端与电池组的正负极连接，所述继电器与电池组的保护电路连接。
所述发热线为硅胶发热线。
本实用新型具有的优点和积极效果是：提高了电池组在外界低温环境下的放电效率，改善了低温充电的安全性，可以广泛应用在电动车电池中，如高速纯电动轿车、混合动力公交车等项目上，通用性强，实用范围广，加工装配方便，结构简单，成本低。
附图说明
图1是本实用新型的结构示意图。
图中：1、电池组，2、主回路开关，3、主回路继电器，4、保护电路，5、继电器，6、发热线。
具体实施方式
为能进一步了解本实用新型的发明内容、特点及功效，兹例举以下实施例，并配合附图详细说明如下：
请参阅图1，本实用新型一种锂离子电池组自加热装置，包括继电器5，所述继电器5串联在发热线6中间，所述发热线6布置在所述电池组1的电池之间，两端与电池组1的正负极连接，所述继电器5与电池组的保护电路4连接。
综合考虑经济性和加热效果，所述发热线6为硅胶发热线。
本实用新型的工作原理：
车辆使用时，打开主回路开关2，保护电路4开始工作，通过保护电路4上温度测量装置来确定目前环境温度，如果环境温度低于设定温度，则继电器5吸合，电池组1通过硅胶发热线6低电流放电，此时硅胶发热线6工作，散发热量，因为电池组1处于密闭空间，能很快地提升电池组温度。当温度达到设定要求，继电器5断开，主回路继电器3吸合，车辆控制表盘显示车辆可以启动。在车辆运行过程中，由于电池放电同时产生热量，所以环境温度可以维持在需要的温度。这样解决了锂离子电池组使用环境温度低，造成电池放电效率低的问题。
当电池需要充电时，打开主回路开关2，保护电路4开始工作，如果环境温度低于设定温度，则继电器5吸合，电池组1通过硅胶发热线6低电流放电，提升环境温度，当到达设定温度后，继电器5断开，主回路继电器3吸合，电池组1开始充电。电池组1充电过程中，电池同时产生热量，所以环境温度可以维持在需要的温度。这样解决了锂离子电池组充电因环境温度低造成的安全隐患。
尽管上面结合附图对本实用新型的优选实施例进行了描述，但是本实用新型并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，并不是限制性的，本领域的普通技术人员在本实用新型的启示下，在不脱离本实用新型宗旨和权利要求所保护的范围情况下，还可以做出很多形式，这些均属于本实用新型的保护范围之内。
Claims (2)
1.一种锂离子电池组自加热装置，其特征在于，包括继电器，所述继电器串联在发热线中间，所述发热线布置在所述电池组的电池之间，两端与电池组的正负极连接，所述继电器与电池组的保护电路连接。
2.根据权利要求1所述的锂离子电池组自加热装置，其特征在于，所述发热线为硅胶发热线。
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| CN101976743A (zh) * | 2010-08-23 | 2011-02-16 | 海洋王照明科技股份有限公司 | 低温下电池的保护方法及低温移动灯具 |
| CN102208700A (zh) * | 2011-04-25 | 2011-10-05 | 奇瑞汽车股份有限公司 | 一种电动汽车用锂离子动力电池自动加热系统 |
| CN102479982A (zh) * | 2010-11-26 | 2012-05-30 | 上海鼎研智能科技有限公司 | 二次电池组低温充电方法 |
| CN102709617A (zh) * | 2012-06-07 | 2012-10-03 | 东莞新能德科技有限公司 | 一种锂电池 |
| US8816634B2 (en) | 2010-07-30 | 2014-08-26 | Byd Company Limited | Battery heating circuits and methods using resonance components in series |
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| TWI464999B (zh) * | 2010-12-23 | 2014-12-11 | Byd Co Ltd | 一種電池的加熱電路 |
| TWI465001B (zh) * | 2010-12-23 | 2014-12-11 | Byd Co Ltd | 一種電池的加熱電路 |
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| US9209644B2 (en) | 2010-07-30 | 2015-12-08 | Byd Company Limited | Circuits and methods for heating batteries in series using resonance components in series |
| US9214706B2 (en) | 2010-07-30 | 2015-12-15 | Byd Company Limited | Battery heating circuits and methods using resonance components in series based on charge balancing |
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| CN110194112A (zh) * | 2019-04-28 | 2019-09-03 | 北京长城华冠汽车科技股份有限公司 | 电动车辆的控制方法和装置、存储介质、电子设备 |
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2009
- 2009-04-15 CN CN 200920096318 patent/CN201397868Y/zh not_active Expired - Lifetime
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