WO2017059641A1 - 一种带有诊断功能的智能充电器及充电方法 - Google Patents

一种带有诊断功能的智能充电器及充电方法 Download PDF

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WO2017059641A1
WO2017059641A1 PCT/CN2015/099124 CN2015099124W WO2017059641A1 WO 2017059641 A1 WO2017059641 A1 WO 2017059641A1 CN 2015099124 W CN2015099124 W CN 2015099124W WO 2017059641 A1 WO2017059641 A1 WO 2017059641A1
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Prior art keywords
charging
module
current
battery
fault
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English (en)
French (fr)
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周公博
王后连
朱真才
李志翔
李伟
曹国华
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China University of Mining and Technology Beijing CUMTB
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China University of Mining and Technology Beijing CUMTB
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Priority to AU2015411280A priority Critical patent/AU2015411280B2/en
Priority to US15/766,817 priority patent/US10205329B2/en
Publication of WO2017059641A1 publication Critical patent/WO2017059641A1/zh
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/60—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/385—Arrangements for measuring battery or accumulator variables
    • G01R31/387—Determining ampere-hour charge capacity or SoC
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
    • G01R31/392—Determining battery ageing or deterioration, e.g. state of health
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/80—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including monitoring or indicating arrangements
    • H02J7/82—Control of state of charge [SOC]
    • H02J7/825—Detection of fully charged condition

Definitions

  • the invention relates to a smart charger and a charging method, in particular to a smart charger with a diagnostic function and a charging method.
  • the object of the present invention is to provide a smart charger with a diagnostic function and a charging method, which solves the problem that the existing battery charger does not have a battery fault diagnosis, and the battery fault diagnosis device is complicated and inconvenient to use.
  • the smart charger includes: a control module, a diagnosis module, a charging module, a multi-way switch and a detection module; the control module and the diagnosis module, the charging module, and the multi-way switch are sequentially connected; The detection module is sequentially connected to the battery external terminal, the multiplex switch, and the fault diagnosis module.
  • the control module comprises: a single chip microcomputer, a mode selection button and an LCD display screen; the mode selection button, the single chip microcomputer and the LCD display screen are sequentially connected, the input end of the single chip microcomputer is connected with the diagnosis module, and the output end of the single chip microcomputer is connected with the charging module.
  • the diagnostic module includes: a fault identification unit and a capacity detecting unit; the output ends of the fault identifying unit and the capacity detecting unit are respectively connected to the input end of the single chip of the control module, and the input end of the fault identifying unit is connected with the detecting module, and the capacity detecting unit is The input end is connected to the multiplex switch; wherein the fault identification unit stores a current-voltage curve of the battery charged and discharged under various fault conditions.
  • the charging module includes a charging unit, and an input end of the charging unit is connected to a single-chip output end of the control module, and an output end of the charging unit is connected to the multi-way switch.
  • the detecting module comprises: a voltage sensor and a current sensor; the voltage sensor is connected across the two output inputs of the multi-way switch, and the output end of the voltage sensor is connected to the input end of the diagnostic unit of the diagnostic module; current sensing The device is connected in series to an output line of the multiplexer, and the output of the current sensor is connected to the input of the diagnostic unit of the diagnostic module.
  • the charging method has two modes: a charging mode and a diagnostic mode; the charging function of the charging mode is the same as a normal charger using constant current to constant voltage or phase charging for different power batteries; the diagnostic mode includes fault diagnosis And the life detection two-part function; the fault diagnosis is to prompt the detection of a possible failure problem of the battery; the life detection is to detect the current battery capacity, and determine the current battery life by the ratio of the current capacity and the rated capacity;
  • A1 The pins 4 and 7 of the MCU control multiplexer are connected, 5 and 6 are connected; the charging unit is connected to the external battery pack for charging;
  • A2 The current sensor detects the current. If the current is >0.1C, jump to step A1; if the current is ⁇ 0.1C, jump to the next step;
  • A3 The pins 4 and 7 of the MCU control multiplexer are disconnected, and 5 and 6 are disconnected, thereby disconnecting the charging unit from the battery pack;
  • A4 LCD display charging is completed
  • the diagnostic steps are as follows:
  • step B2 The current sensor detects the current, the current is >0.1C, and jumps to step B1; if the current is ⁇ 0.1C, it jumps to the next step;
  • B3 The pins 1 and 7 of the multi-channel control of the single-chip control are connected, 2 and 6 are connected, and the measuring unit is connected to the external battery pack to discharge;
  • B4 The capacity test unit performs constant current discharge on the battery, and the control module starts recording the discharge time
  • the detecting module sends the measured current and voltage data to the fault identification unit;
  • the obstacle recognition unit has built-in charging and discharging curves of the battery of various fault types, and the fault identifying unit compares the received data with the built-in fault curve to determine Type of battery failure in the discharged state;
  • step B6 the voltage sensor detects the voltage, the voltage value is greater than the discharge cutoff voltage, jump to step B3; when the voltage value is equal to the discharge cutoff voltage, jump to step B7;
  • Pins 1 and 7 of the MCU control multiplexer are disconnected, 2 and 6 are disconnected, that is, the discharge circuit is disconnected; pins 4 and 7 of the control multiplexer are turned on, 5 and 6 are turned on, and the charging circuit is turned on. ;
  • the detecting module measures the voltage and current data, and sends the measured data to the fault identifying unit, and the fault identifying unit compares and receives the received data with the built-in fault curve to determine the type of battery fault in the charging state; combined with step B5 Comprehensively determine the type of battery fault and forward it to the microcontroller;
  • step B10 The current sensor detects the current magnitude. If the current is >0.1C, jump to step B8; if the current is ⁇ 0.1C, jump to the next step;
  • the utility model has the advantages that the smart charger supports the mode selection function, and the charging mode or the diagnosis mode can be selected according to the user's needs.
  • the control module switches between the two modes according to the user selection to control different switches.
  • the charging mode adopts a common charging method such as constant current to constant voltage or three-stage charging; the diagnosis mode needs to perform charging-discharging-charging for the battery for a total of 3 continuous actions, and the capacity test is obtained by using the ampere-time integral method in the discharging process, and the fault identification is performed. It is determined based on the two processes of discharge and charging. In this way, the battery fault diagnosis and charging functions are integrated through intelligent control.
  • the present invention has both a charging function and a diagnostic function, and can measure battery life and fault type, and is a multi-purpose charger. Make full use of the remaining time of night battery charging, and can choose a variety of modes according to user needs, to achieve monitoring battery life, health status, and provide security for electric vehicle power sources.
  • FIG. 1 is a diagram showing the internal structure of a smart charger with a diagnostic function according to the present invention.
  • 3 is a flow chart of the charging mode operation of the present invention.
  • FIG. 4 is a flow chart showing the operation of the diagnostic mode of the present invention.
  • Embodiment 1 The smart charger comprises: a control module, a diagnosis module, a charging module, a multi-way switch and a detection module; the control module and the diagnosis module, the charging module and the multi-way switch are sequentially connected; the detection module is sequentially connected with the external terminal of the battery, The multi-way switch and fault diagnosis module are connected.
  • the control module comprises: a single chip microcomputer, a mode selection button and an LCD display screen; the mode selection button, the single chip microcomputer and the LCD display screen are sequentially connected, the input end of the single chip microcomputer is connected with the diagnosis module, and the output end of the single chip microcomputer is connected with the charging module.
  • the diagnostic module includes: a fault identification unit and a capacity detecting unit; the output ends of the fault identifying unit and the capacity detecting unit are respectively connected to the input end of the single chip of the control module, and the input end of the fault identifying unit is connected with the detecting module, and the capacity detecting unit is The input end is connected to the multiplex switch; wherein the fault identification unit stores a current-voltage curve of the battery charged and discharged under various fault conditions.
  • the charging module includes a charging unit, and an input end of the charging unit is connected to a single-chip output end of the control module, and an output end of the charging unit is connected to the multi-way switch.
  • the detecting module comprises: a voltage sensor and a current sensor; the voltage sensor is connected across the two output inputs of the multi-way switch, and the output end of the voltage sensor is connected to the input end of the diagnostic unit of the diagnostic module; the current sensor is connected in series On an output line of the multiplexer, the output of the current sensor is connected to the input of the diagnostic unit of the diagnostic module.
  • the charging method has two modes: a charging mode and a diagnostic mode; the charging function of the charging mode is the same as a normal charger using constant current to constant voltage or phase charging for different power batteries; the diagnostic mode includes fault diagnosis And the life detection two-part function; the fault diagnosis is to prompt the detection of a possible failure problem of the battery; the life detection is to detect the current battery capacity, and determine the current battery life by the ratio of the current capacity and the rated capacity;
  • A1 The pins 4 and 7 of the MCU control multiplexer are connected, 5 and 6 are connected; the charging unit is connected to the external battery pack for charging;
  • A2 The current sensor detects the current. If the current is >0.1C, jump to step A1; if the current is ⁇ 0.1C, jump to the next step;
  • A3 The pins 4 and 7 of the MCU control multiplexer are disconnected, and 5 and 6 are disconnected, thereby disconnecting the charging unit from the battery pack;
  • A4 LCD display charging is completed
  • the diagnostic steps are as follows:
  • step B2 The current sensor detects the current, the current is >0.1C, and jumps to step B1; if the current is ⁇ 0.1C, it jumps to the next step;
  • B3 The pins 1 and 7 of the multi-channel control of the single-chip control are connected, 2 and 6 are connected, and the measuring unit is connected to the external battery pack to discharge;
  • B4 The capacity test unit performs constant current discharge on the battery, and the control module starts recording the discharge time
  • the detecting module sends the measured current and voltage data to the fault identification unit;
  • the obstacle recognition unit has built-in charging and discharging curves of the battery of various fault types, and the fault identifying unit compares the received data with the built-in fault curve to determine Type of battery failure in the discharged state;
  • step B6 the voltage sensor detects the voltage, the voltage value is greater than the discharge cutoff voltage, jump to step B3; when the voltage value is equal to the discharge cutoff voltage, jump to step B7;
  • Pins 1 and 7 of the MCU control multiplexer are disconnected, 2 and 6 are disconnected, that is, the discharge circuit is disconnected; pins 4 and 7 of the control multiplexer are turned on, 5 and 6 are turned on, and the charging circuit is turned on. ;
  • the detecting module measures the voltage and current data, and sends the measured data to the fault identifying unit, and the fault identifying unit compares and receives the received data with the built-in fault curve to determine the type of battery fault in the charging state; combined with step B5 Comprehensively determine the type of battery fault and forward it to the microcontroller;
  • step B10 The current sensor detects the current magnitude. If the current is >0.1C, jump to step B8; if the current is ⁇ 0.1C, jump to the next step;

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)
  • Secondary Cells (AREA)

Abstract

一种带有诊断功能的智能充电器及充电方法，该智能充电器包括：控制模块、诊断模块、充电模块、多路开关和检测模块；控制模块和诊断模块、充电模块、多路开关依次相连；检测模块依次和电池外部接线端、多路开关、故障诊断模块相连。充电方法具有两种模式：充电模式和诊断模式；诊断模式包括故障诊断和寿命检测两部分功能；故障诊断是检测电池可能出现的故障问题给出提示；寿命检测是检测当前电池的容量，通过当前容量和额定容量之比，确定当前电池寿命。该智能充电器及充电方法兼具充电功能和诊断功能，可以测量电池寿命、故障类型；充分利用夜间电池充电的剩余时间，具有多种选择模式，实现监控电池寿命、健康状态。

Description

一种带有诊断功能的智能充电器及充电方法 技术领域
本发明涉及一种智能充电器及充电方法，特别是一种带有诊断功能的智能充电器及充电方法。
背景技术
动力电池作为电动汽车的动力源，由于复杂的工作环境和多变的运行条件，实际使用中难免会出现各种故障或老化。一旦故障出现未能及时检测或处理，则可能会导致安全事故。
目前已有关于电池故障诊断和电池充电器的相关专利。然而这些专利都存在着一些不足。电动汽车在夜间充电时，充满电之后仍有大量可以利用的时间，普通的充电器恰恰忽视了这些时间。对于用户而言，专门购置一台电池故障诊断装置并保持使用，繁琐费事，使用不便。
发明内容
本发明的目的是要提供一种带有诊断功能的智能充电器及充电方法，解决现有电池充电器不具有电池故障诊断，另外配置电池故障诊断装置繁琐费事，使用不便的问题。
本发明的目的是这样实现的：
为实现上述发明目的，本发明采用以下技术方案：该智能充电器包括：控制模块、诊断模块、充电模块、多路开关和检测模块；控制模块和诊断模块、充电模块、多路开关依次相连；检测模块依次和电池外部接线端、多路开关、故障诊断模块相连。
所述的控制模块包括：单片机、模式选择按键和LCD显示屏；模式选择按键、单片机和LCD显示屏顺序连接，单片机的输入端与诊断模块连接，单片机的输出端与充电模块连接。
所述的诊断模块包括：故障识别单元和容量检测单元；故障识别单元和容量检测单元的输出端分别与控制模块的单片机输入端连接，故障识别单元的输入端与检测模块连接，容量检测单元的输入端与多路开关连接；其中，故障识别单元存储了蓄电池在多种故障条件下充放电的电流电压曲线。
所述的充电模块包括充电单元，充电单元的输入端与控制模块的单片机输出端连接，充电单元的输出端与多路开关连接。
所述的检测模块包括：电压传感器和电流传感器；电压传感器跨接在多路开关的二根输出输上，电压传感器的输出端与诊断识模块的诊断别单元的输入端连接；电流传感 器串接在多路开关的一根输出线上，电流传感器的输出端与诊断识模块的诊断别单元的输入端连接。
充电方法具有两种模式：充电模式和诊断模式；所述的充电模式的充电功能和普通充电器一样采用恒流转恒压或者针对不同的动力电池的阶段式充电；所述的诊断模式包括故障诊断和寿命检测两部分功能；所述的故障诊断是检测电池可能出现的故障问题给出提示；所述的寿命检测是检测当前电池的容量，通过当前容量和额定容量之比，确定当前电池寿命；
按键选择充电模式或者诊断模式，如果选择充电模式时，充电步骤如下：
A1：单片机控制多路开关的引脚4和7连通，5和6连通；充电单元连通外部电池组实现充电；
A2：电流传感器检测电流大小，若电流>0.1C，跳转至步骤A1；若电流<0.1C，跳转至下一步；
A3：单片机控制多路开关的引脚4与7断开，5和6断开，从而断开充电单元与电池组的连接；
A4：LCD显示充电完成；
如果选择诊断模式时，诊断步骤作如下：
B1：单片机控制多路开关的引脚4和7连通，5和6连通；电单元连通外部电池组实现充电；
B2:电流传感器检测电流大小，电流>0.1C，跳转至步骤B1；若电流<0.1C，跳转至下一步；
B3:单片机控制多路开关的引脚1和7连通，2和6连通，量测试单元连通外部电池组,进行放电；
B4:容量测试单元对电池进行恒流放电，控制模块开始记录放电时间；
B5：检测模块将测得的电流、电压数据发送给故障识别单元；障识别单元内置了多种故障类型电池的充放电曲线，故障识别单元将接收的数据与内置的故障曲线对比识别，从而判断放电状态下的电池故障类型；
B6：电压传感器检测电压大小，电压值大于放电截止电压时，跳转至步骤B3；当电压值等于放电截止电压时，跳转至步骤B7；
B7：将容量测试单元测得的容量除以额定容量，即得到电池的寿命，并将数据显示在LCD上；
B8：单片机控制多路开关的引脚1和7断开，2和6断开，即断开放电回路；控制多路开关的引脚4和7接通，5和6接通，接通充电回路；
B9：检测模块测量电压电流数据，并将测得的数据发送给故障识别单元，故障识别单元再次将接收的数据与内置的故障曲线对比识别，从而判断充电状态下的电池故障类型；结合步骤B5，综合判断电池故障类型，并转发给单片机；
B10：电流传感器检测电流大小，若电流>0.1C，跳转至步骤B8；若电流<0.1C，跳转至下一步；
B11：LCD显示充满电。
有益效果，由于采用了上述方案，该智能充电器支持模式选择功能，可以根据用户的需求选择充电模式或者诊断模式。控制模块根据用户选择控制不同的开关切换两种模式。其中充电模式采取恒流转恒压或者三阶段充电等常用的充电方法；诊断模式需要对电池执行充电—放电—充电共3个连续动作，容量测试在放电过程中采用安时积分法获得，故障识别则要根据放电和充电两个过程综合确定。如此，通过智能控制将电池故障诊断和充电两种功能集成一身。
优点：本发明兼具充电功能和诊断功能，可以测量电池寿命、故障类型，属于多用途充电器。充分利用夜间电池充电的剩余时间，并且可以根据用户需求选择多种模式，实现监控电池寿命、健康状态，为电动汽车动力源提供了安全保障。
附图说明：
图1为本发明的一种带有诊断功能的智能充电器内部结构图。
图2为本发明的模式选择流程图。
图3为本发明的充电模式动作流程图。
图4为本发明的诊断模式动作流程图。
具体实施方式
以下结合具体实施例对本发明进行详细说明：
实施例1：该智能充电器包括：控制模块、诊断模块、充电模块、多路开关和检测模块；控制模块和诊断模块、充电模块、多路开关依次相连；检测模块依次和电池外部接线端、多路开关、故障诊断模块相连。
所述的控制模块包括：单片机、模式选择按键和LCD显示屏；模式选择按键、单片机和LCD显示屏顺序连接，单片机的输入端与诊断模块连接，单片机的输出端与充电模块连接。
所述的诊断模块包括：故障识别单元和容量检测单元；故障识别单元和容量检测单元的输出端分别与控制模块的单片机输入端连接，故障识别单元的输入端与检测模块连接，容量检测单元的输入端与多路开关连接；其中，故障识别单元存储了蓄电池在多种故障条件下充放电的电流电压曲线。
所述的充电模块包括充电单元，充电单元的输入端与控制模块的单片机输出端连接，充电单元的输出端与多路开关连接。
所述的检测模块包括：电压传感器和电流传感器；电压传感器跨接在多路开关的二根输出输上，电压传感器的输出端与诊断识模块的诊断别单元的输入端连接；电流传感器串接在多路开关的一根输出线上，电流传感器的输出端与诊断识模块的诊断别单元的输入端连接。
充电方法具有两种模式：充电模式和诊断模式；所述的充电模式的充电功能和普通充电器一样采用恒流转恒压或者针对不同的动力电池的阶段式充电；所述的诊断模式包括故障诊断和寿命检测两部分功能；所述的故障诊断是检测电池可能出现的故障问题给出提示；所述的寿命检测是检测当前电池的容量，通过当前容量和额定容量之比，确定当前电池寿命；
按键选择充电模式或者诊断模式，如果选择充电模式时，充电步骤如下：
A1：单片机控制多路开关的引脚4和7连通，5和6连通；充电单元连通外部电池组实现充电；
A2：电流传感器检测电流大小，若电流>0.1C，跳转至步骤A1；若电流<0.1C，跳转至下一步；
A3：单片机控制多路开关的引脚4与7断开，5和6断开，从而断开充电单元与电池组的连接；
A4：LCD显示充电完成；
如果选择诊断模式时，诊断步骤作如下：
B1：单片机控制多路开关的引脚4和7连通，5和6连通；电单元连通外部电池组实现充电；
B2:电流传感器检测电流大小，电流>0.1C，跳转至步骤B1；若电流<0.1C，跳转至下一步；
B3:单片机控制多路开关的引脚1和7连通，2和6连通，量测试单元连通外部电池组,进行放电；
B4:容量测试单元对电池进行恒流放电，控制模块开始记录放电时间；
B5：检测模块将测得的电流、电压数据发送给故障识别单元；障识别单元内置了多种故障类型电池的充放电曲线，故障识别单元将接收的数据与内置的故障曲线对比识别，从而判断放电状态下的电池故障类型；
B6：电压传感器检测电压大小，电压值大于放电截止电压时，跳转至步骤B3；当电压值等于放电截止电压时，跳转至步骤B7；
B7：将容量测试单元测得的容量除以额定容量，即得到电池的寿命，并将数据显示在LCD上；
B8：单片机控制多路开关的引脚1和7断开，2和6断开，即断开放电回路；控制多路开关的引脚4和7接通，5和6接通，接通充电回路；
B9：检测模块测量电压电流数据，并将测得的数据发送给故障识别单元，故障识别单元再次将接收的数据与内置的故障曲线对比识别，从而判断充电状态下的电池故障类型；结合步骤B5，综合判断电池故障类型，并转发给单片机；
B10：电流传感器检测电流大小，若电流>0.1C，跳转至步骤B8；若电流<0.1C，跳转至下一步；
B11：LCD显示充满电。

Claims (6)

  1. 一种带有诊断功能的智能充电器，其特征是：该智能充电器包括：控制模块、诊断模块、充电模块、多路开关和检测模块；控制模块和诊断模块、充电模块、多路开关依次相连；检测模块依次和电池外部接线端、多路开关、故障诊断模块相连。
  2. 根据权利要求1所述的一种带有诊断功能的智能充电器，其特征是：所述的控制模块包括：单片机、模式选择按键和LCD显示屏；模式选择按键、单片机和LCD显示屏顺序连接，单片机的输入端与诊断模块连接，单片机的输出端与充电模块连接。
  3. 根据权利要求1所述的一种带有诊断功能的智能充电器，其特征是：所述的诊断模块包括：故障识别单元和容量检测单元；故障识别单元和容量检测单元的输出端分别与控制模块的单片机输入端连接，故障识别单元的输入端与检测模块连接，容量检测单元的输入端与多路开关连接；其中，故障识别单元存储了蓄电池在多种故障条件下充放电的电流电压曲线。
  4. 根据权利要求1所述的一种带有诊断功能的智能充电器，其特征是：所述的充电模块包括充电单元，充电单元的输入端与控制模块的单片机输出端连接，充电单元的输出端与多路开关连接。
  5. 根据权利要求1所述的一种带有诊断功能的智能充电器，其特征是：所述的检测模块包括：电压传感器和电流传感器；电压传感器跨接在多路开关的二根输出输上，电压传感器的输出端与诊断识模块的诊断别单元的输入端连接；电流传感器串接在多路开关的一根输出线上，电流传感器的输出端与诊断识模块的诊断别单元的输入端连接。
  6. 权利要求1所述的一种带有诊断功能的智能充电器的充电方法，其特征是：充电方法具有两种模式：充电模式和诊断模式；所述的充电模式的充电功能和普通充电器一样采用恒流转恒压或者针对不同的动力电池的阶段式充电；所述的诊断模式包括故障诊断和寿命检测两部分功能；所述的故障诊断是检测电池可能出现的故障问题给出提示；所述的寿命检测是检测当前电池的容量，通过当前容量和额定容量之比，确定当前电池寿命；
    按键选择充电模式或者诊断模式，如果选择充电模式时，充电步骤如下：
    A1：单片机控制多路开关的引脚4和7连通，5和6连通；充电单元连通外部电池组实现充电；
    A2：电流传感器检测电流大小，若电流>0.1C，跳转至步骤A1；若电流<0.1C，跳转至下一步；
    A3：单片机控制多路开关的引脚4与7断开，5和6断开，从而断开充电单元与电池 组的连接；
    A4：LCD显示充电完成；
    如果选择诊断模式时，诊断步骤作如下：
    B1：单片机控制多路开关的引脚4和7连通，5和6连通；电单元连通外部电池组实现充电；
    B2:电流传感器检测电流大小，电流>0.1C，跳转至步骤B1；若电流<0.1C，跳转至下一步；
    B3:单片机控制多路开关的引脚1和7连通，2和6连通，量测试单元连通外部电池组,进行放电；
    B4:容量测试单元对电池进行恒流放电，控制模块开始记录放电时间；
    B5：检测模块将测得的电流、电压数据发送给故障识别单元；障识别单元内置了多种故障类型电池的充放电曲线，故障识别单元将接收的数据与内置的故障曲线对比识别，从而判断放电状态下的电池故障类型；
    B6：电压传感器检测电压大小，电压值大于放电截止电压时，跳转至步骤B3；当电压值等于放电截止电压时，跳转至步骤B7；
    B7：将容量测试单元测得的容量除以额定容量，即得到电池的寿命，并将数据显示在LCD上；
    B8：单片机控制多路开关的引脚1和7断开，2和6断开，即断开放电回路；控制多路开关的引脚4和7接通，5和6接通，接通充电回路；
    B9：检测模块测量电压电流数据，并将测得的数据发送给故障识别单元，故障识别单元再次将接收的数据与内置的故障曲线对比识别，从而判断充电状态下的电池故障类型；结合步骤B5，综合判断电池故障类型，并转发给单片机；
    B10：电流传感器检测电流大小，若电流>0.1C，跳转至步骤B8；若电流<0.1C，跳转至下一步；
    B11：LCD显示充满电。
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