CN2470964Y - 大容量蓄电池自动恒流放电装置 - Google Patents
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Abstract
大容量蓄电池自动恒流放电装置,主要属铁路系统电机车用蓄电池维护和测试装置,包括控制电路、驱动电路、斩波器,其特征在于:在蓄电池B1与斩波器间设置LC滤波器,具有保证蓄电池的使用寿命、可靠性高、稳定性好、结构简单、价格低廉、稳流精度高等优点。
Description
大容量蓄电池自动恒流放电装置，主要属铁路系统电机车用蓄电池维护和测试装置。
目前的大容量蓄电池生产厂家，铁路电机车用蓄电池充放电测试，电力系统操作电源中蓄电池组的活化放电等，蓄电池对电阻放电设备均采用斩波器结构，斩波器主要包括，蓄电池B1、开关管T1、续流二极管D1，电阻R1。给开关管T1的基极以占空比可调的PWM控制信号，则蓄电池对电阻R1周期性的放电，放电电流波形为周期性的方波。取电池放电电流信号，滤波后构成闭环，即可实现平均电流恒定的自动“恒流”放电设备。该种设备事实上是非恒流放电，而是间歇式平均值恒定的放电设备，因该电路具有简单、可靠、稳定性好等优点，目前使用较多，其缺点是该种放电方式对蓄电池寿命损害很大。
本实用新型的目的，就在于克服现有技术的不足，提供一种结构简单、价格低廉，可靠性高，稳定性好，稳流精度高，有利于保证蓄电池使用寿命的蓄电池自动恒流放电装置。
本实用新型的目的是采用如下方式来实现的：
该蓄电池自动恒流放电装置，包括控制电路、驱动电路、斩波器，其特征在于：在蓄电池B1与斩波器间设置LC滤波器。
本实用新型的目的还可采用如下方式来实现：
所述的蓄电池自动恒流放电装置，其特征在于：在蓄电池与LC滤波器间还可设置与控制电路相连的霍耳电流传感器HL1，设置与斩波器开关管T1集电极C、发射极E相并联的缓冲电路，开关管T1与驱动电路相连。
所述的蓄电池自动恒流放电装置，其特征在于：缓冲电路包括：电容C6、晶体二极管VD2、电阻R4，电阻R4、晶体二极管VD2相并联后与电容C6串联，再并联在开关管T1的C、E两端。
所述的蓄电池自动恒流放电装置，其特征在于：斩波器主要包括，开关管T1、限流电阻R1、续流二极管D1，蓄电池B1、霍耳电流传感器HL1、滤波电抗器L1相串联后再与滤波电容C1并联，限流电阻R1与续流二极管VD1相并联后，VD1阴极与开关管T1发射极E相联，VD1阳极与蓄电池B1负极相联，滤波电容C1正极与开关管T1集电极C相联，负极与蓄电池B1负极相联。
本实用新型的大容量蓄电池自动恒流放电装置，主要由主电路、控制电路和驱动电路三部分组成。主电路采用(BUCK)斩波器电路结构，主要发明点是在蓄电池组和斩波器之间，加一RC滤波电路，解决了现有技术中不是真正的恒流放电，而是间歇式平均值恒定的放电设备，该放电方式对蓄电池寿命损害很大的问题，保证了蓄电池的使用寿命且具有可靠性高、稳定性好、结构简单、价格低廉、稳流精度高等优点。
图1现有传统的斩波式恒流放电设备主电路图：
图2本实用新型大容量蓄电池自动恒流放电装置电路原理图。
图2是本实用新型大容量蓄电池自动恒流放电装置的最佳实施例，其中：B1蓄电池组T1开关管R1-R14电阻VD1-VD5晶体二极管C1-C6电容L1电感HL1霍耳电流传感器TL494脉冲调制电路RP1可调电阻EXB841驱动电路VL1光电耦合器。下面结合附图对本实用新型蓄电池自动恒流放电装置的构成及工作原理作进一步详细说明：如图2所示B1蓄电池组，开关管T1、电阻R1、晶体二极管VD1构成斩波器；电容C6、晶体二极管VD2、电阻R14构成开关管T1的缓冲电路；电感L1和电容C1构成LC滤波器；霍耳电流传感器HL1和R14用来检测蓄电池组放电电流；脉冲宽度调制电路TIA94和电阻R2-R8、电容C1-C4及可调电阻RP1等构成闭环占空比调节电路，以实现蓄电池组的恒流放电；专用驱动电路EXB841和光电耦合器VL1、电阻R9-R13、二极管VD3-VD5、电容器C5-C6等构成功率开关管的驱动电路。
工作原理如下：该大容量蓄电池自动恒流放电装置，由主电路、控制电路和驱动电路三部分组成。主电路采用(BUCK)斩波器电路结构，在蓄电池组和斩波器之间，加一RC滤波电路。控制电路以专用脉宽调制电路TL494为中心，可调电阻RP1提供放电电流参考信号，HL1提供蓄电池放电电流反馈信号，经脉冲宽度调制电路TL494内部集成的误差信号放大器和校正网络电阻R6、电容C4形成闭环调节电路，输出占空比可调的方波信号，该方波信号经以驱动电路EXB841为中心的驱动电路放大、隔离后，驱动大功率开关管T1，实现大功率蓄电池的自动恒流放电。调节可调电阻RP1，可以调节放电电流的大小。
Claims (4)
1、大容量蓄电池自动恒流放电装置，包括控制电路、驱动电路、斩波器，其特征在于：在蓄电池B1与斩波器间设置LC滤波器。
2、根据权利要求1所述的蓄电池自动恒流放电装置，其特征在于：在蓄电池与LC滤波器间还可设置与控制电路相连的霍耳电流传感器HL1，设置与斩波器开关管T1集电极C、发射极E相并联的缓冲电路，开关管T1与驱动电路相连。
3、根据权利要求1、2所述的蓄电池自动恒流放电装置，其特征在于：缓冲电路包括：电容C6、晶体二极管VD2、电阻R4，电阻R4、晶体二极管VD2相并联后与电容C6串联，再并联在开关管T1的C、E两端。
4、根据权利要求1、2所述的蓄电池自动恒流放电装置，其特征在于：斩波器主要包括，开关管T1、续流二极管D1，蓄电池B1、霍耳电流传感器HL1、滤波电抗器L1相串联后再与滤波电容C1并联，限流电阻R1与续流二极管VD1相并联后，VD1阴极与开关管T1发射极E相联，VD1阳极与蓄电池B1负极相联，滤波电容C1的正极与开关管T1集电极C相联，负极与蓄电池B1负极相联。
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| CN102948002A (zh) * | 2010-06-18 | 2013-02-27 | 密特电子公司 | 具有热缓冲的电池维护设备 |
| US8963550B2 (en) | 2004-08-20 | 2015-02-24 | Midtronics, Inc. | System for automatically gathering battery information |
| US9018958B2 (en) | 2003-09-05 | 2015-04-28 | Midtronics, Inc. | Method and apparatus for measuring a parameter of a vehicle electrical system |
| US9201120B2 (en) | 2010-08-12 | 2015-12-01 | Midtronics, Inc. | Electronic battery tester for testing storage battery |
| US9229062B2 (en) | 2010-05-27 | 2016-01-05 | Midtronics, Inc. | Electronic storage battery diagnostic system |
| US9244100B2 (en) | 2013-03-15 | 2016-01-26 | Midtronics, Inc. | Current clamp with jaw closure detection |
| US9255955B2 (en) | 2003-09-05 | 2016-02-09 | Midtronics, Inc. | Method and apparatus for measuring a parameter of a vehicle electrical system |
| US9274157B2 (en) | 2007-07-17 | 2016-03-01 | Midtronics, Inc. | Battery tester for electric vehicle |
| US9312575B2 (en) | 2013-05-16 | 2016-04-12 | Midtronics, Inc. | Battery testing system and method |
| US9335362B2 (en) | 2007-07-17 | 2016-05-10 | Midtronics, Inc. | Battery tester for electric vehicle |
| US9425487B2 (en) | 2010-03-03 | 2016-08-23 | Midtronics, Inc. | Monitor for front terminal batteries |
| US9496720B2 (en) | 2004-08-20 | 2016-11-15 | Midtronics, Inc. | System for automatically gathering battery information |
| US9588185B2 (en) | 2010-02-25 | 2017-03-07 | Keith S. Champlin | Method and apparatus for detecting cell deterioration in an electrochemical cell or battery |
| US9851411B2 (en) | 2012-06-28 | 2017-12-26 | Keith S. Champlin | Suppressing HF cable oscillations during dynamic measurements of cells and batteries |
| US9923289B2 (en) | 2014-01-16 | 2018-03-20 | Midtronics, Inc. | Battery clamp with endoskeleton design |
| US9966676B2 (en) | 2015-09-28 | 2018-05-08 | Midtronics, Inc. | Kelvin connector adapter for storage battery |
| US10046649B2 (en) | 2012-06-28 | 2018-08-14 | Midtronics, Inc. | Hybrid and electric vehicle battery pack maintenance device |
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-
2001
- 2001-03-16 CN CN 01236014 patent/CN2470964Y/zh not_active Expired - Fee Related
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| US9851411B2 (en) | 2012-06-28 | 2017-12-26 | Keith S. Champlin | Suppressing HF cable oscillations during dynamic measurements of cells and batteries |
| US9244100B2 (en) | 2013-03-15 | 2016-01-26 | Midtronics, Inc. | Current clamp with jaw closure detection |
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| US11054480B2 (en) | 2016-10-25 | 2021-07-06 | Midtronics, Inc. | Electrical load for electronic battery tester and electronic battery tester including such electrical load |
| US11513160B2 (en) | 2018-11-29 | 2022-11-29 | Midtronics, Inc. | Vehicle battery maintenance device |
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| CN113346582A (zh) * | 2021-05-31 | 2021-09-03 | 上海航天电源技术有限责任公司 | 一种电池组电压均衡方法 |
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