CN201774244U - A charging protector - Google Patents

本实用新型公开了一种充电保护器，包括外壳，外壳内安装有控制器，外壳外设有通过电源线与控制器电连接的插头，外壳上安装有向外界供电的插座，插座通过充电线与电源线对应电连接，充电线上套装有向控制器发送电信号的电流互感器，充电线上还串接有由控制器控制的继电器，外壳上安装有与控制器电连接的显示屏和设定参数用的按键。电流互感器和控制器之间安装有A/D转换器。采用这种结构的充电保护器，结构合理，能够对充电器充电电流、充电时间进行控制，且使用方便，适合在各种充电场合使用，有助于延长蓄电池寿命和提高充电安全性。

The utility model discloses a charging protector, which comprises a casing. A controller is installed inside the casing. A plug electrically connected to the controller through a power line is arranged outside the casing. A socket for supplying power to the outside is installed on the casing. Corresponding to the electrical connection with the power line, the charging line is equipped with a current transformer that sends electrical signals to the controller, the charging line is also connected in series with a relay controlled by the controller, and the display screen and the controller are installed on the shell. Keys for setting parameters. An A/D converter is installed between the current transformer and the controller. The charging protector with this structure has a reasonable structure, can control the charging current and charging time of the charger, is convenient to use, is suitable for use in various charging occasions, and helps prolong the service life of the storage battery and improve charging safety.

一种充电保护器 A charging protector

技术领域technical field

本实用新型涉及一种充电保护器。The utility model relates to a charging protector.

背景技术Background technique

随着社会经济的不断发展，人们的生活水平不断提高，便携式直流用电设备的种类也越来越多，如手机、数码设备、手提电脑，以及电动车等，这些直流用电设备都是以蓄电池作为供应电源，当蓄电池电量不足时需要及时充电。目前的蓄电池在充电都是通过充电器来完成的。充电器，是用来对蓄电池进行存储电能的专用设备，充电器的主要功能就是进行交直流转换，并对蓄电池进行直流充电。充电时，只需将充电器的交流插头插装到交流插座上，并将充电器的充电插头与待充电设备充电端插装到一起即可，非常方便。传统的充电器，结构简单，成本低廉，且充电方便，不足之处在于，没有专用的充电控制设备，充电时，只要不实施人工断电，充电器便一直对待充电设备进行小电流充电，很容易造成过充发热，这样，不但对蓄电池寿命有损害，而且也不利于用电安全，极易酿成事故。With the continuous development of the social economy and the continuous improvement of people's living standards, there are more and more types of portable DC power equipment, such as mobile phones, digital equipment, laptop computers, and electric vehicles, etc. These DC power equipment are based on The battery is used as a power supply, and it needs to be charged in time when the battery is low. The current storage battery is charged by a charger. The charger is a special device used to store electric energy for the battery. The main function of the charger is to convert AC to DC and charge the battery with DC. When charging, you only need to insert the AC plug of the charger into the AC socket, and plug the charging plug of the charger together with the charging end of the device to be charged, which is very convenient. The traditional charger has simple structure, low cost, and convenient charging. The disadvantage is that there is no special charging control device. When charging, as long as the power is not manually cut off, the charger will always charge the charging device with a small current, which is very difficult. It is easy to cause overcharging and heating, which not only damages the life of the battery, but also is not conducive to the safety of electricity use, which can easily lead to accidents.

发明内容Contents of the invention

本实用新型要解决的技术问题是针对上述不足提供一种结构合理，能够对充电器充电电流、充电时间进行控制，且使用方便的充电保护器。The technical problem to be solved by the utility model is to provide a charging protector with reasonable structure, capable of controlling the charging current and charging time of the charger, and convenient to use.

为解决上述技术问题，本充电保护器的结构特点是：包括外壳，外壳内安装有控制器，外壳外设有通过电源线与控制器电连接的插头，外壳上安装有向外界供电的插座，插座通过充电线与电源线对应电连接，充电线上套装有向控制器发送电信号的电流互感器，充电线上还串接有由控制器控制的继电器，外壳上安装有与控制器电连接的显示屏和设定参数用的按键。In order to solve the above technical problems, the structural features of this charging protector are: it includes a casing, a controller is installed inside the casing, a plug is electrically connected to the controller through a power line outside the casing, and a socket for supplying power to the outside is installed on the casing. The socket is electrically connected to the power line through the charging line. The charging line is equipped with a current transformer that sends electrical signals to the controller. The charging line is also connected in series with a relay controlled by the controller. display and keys for parameter setting.

本结构的充电保护器是通过电流反馈控制结构来实现能够对充电器充电电流、充电时间进行控制，且使用方便的。The charging protector of this structure can control the charging current and charging time of the charger through the current feedback control structure, and is convenient to use.

电流反馈控制结构主要包括串接在充电线上的电流互感器，充电线是向待充电设备充电的电流流经线路，电流互感器的主要作用是检测向待充电设备充电时充电线中充电电流的大小，并将该检测信号传送到控制器的输入端，这样，控制器便可以实时检测充电电流的大小。充电线上还安装有继电器，继电器的常开触点串接在充电线上，继电器的控制端与控制器输出端电连接。外壳上安装有与控制器电连接的显示屏和按键，通过按键可以向控制器设定充电控制参数，如充电时间、充电关断电流等，还可以控制控制器开始充电流程。如果充电时间超过设定时间，或充电电流小于设定电流值时，控制器将停止向继电器供电，继电器失电恢复常开状态便切断充电线，这样，充电过程便结束了，避免了向待充电设备过度充电，保护了蓄电池。The current feedback control structure mainly includes a current transformer connected in series on the charging line. The charging line is the current flowing through the line to charge the device to be charged. The main function of the current transformer is to detect the charging current in the charging line when charging the device to be charged. The magnitude of the charging current is transmitted to the input terminal of the controller, so that the controller can detect the magnitude of the charging current in real time. A relay is also installed on the charging line, the normally open contacts of the relay are connected in series on the charging line, and the control terminal of the relay is electrically connected with the output terminal of the controller. A display screen and buttons electrically connected to the controller are installed on the casing, through which the charging control parameters can be set to the controller, such as charging time, charging shutdown current, etc., and the controller can also be controlled to start the charging process. If the charging time exceeds the set time, or the charging current is less than the set current value, the controller will stop supplying power to the relay, and the relay will cut off the charging line when it returns to the normal open state after power failure. The charging equipment is overcharged, protecting the battery.

作为改进，电流互感器和控制器之间安装有A/D转换器。As an improvement, an A/D converter is installed between the current transformer and the controller.

在电流互感器和控制器之间安装A/D转换器，可以对电流互感器检测到的模拟信号转化成数字信号，这样，降低了对控制器的要求，有利于降低成本，使用起来更加方便。Installing an A/D converter between the current transformer and the controller can convert the analog signal detected by the current transformer into a digital signal, which reduces the requirements for the controller, helps reduce costs, and is more convenient to use .

作为进一步改进，外壳上安装有开关，开关串接在电源线中。As a further improvement, a switch is installed on the casing, and the switch is connected in series in the power line.

在外壳上设置开关，可以对电源线进行控制，是本充电保护器的总控开关，使用起来更加方便。A switch is set on the shell to control the power line, which is the master control switch of the charging protector and is more convenient to use.

作为再进一步改进，外壳上安装有与控制器电连接的电源指示灯。As a further improvement, a power indicator light electrically connected to the controller is installed on the casing.

在外壳上设置电源指示灯，可以显示电源供电状态，以方便人们了解本充电保护器的工作状体。A power indicator light is arranged on the casing to display the power supply status, so that people can know the working state of the charging protector conveniently.

作为更进一步改进，外壳内安装有与控制器电连接的喇叭，外壳上安装有与喇叭位置对应的的音孔。As a further improvement, a speaker electrically connected to the controller is installed inside the housing, and a sound hole corresponding to the position of the speaker is installed on the housing.

在外壳上设置喇叭，当充电完毕时，控制器控制继电器断电，并驱动喇叭发出报警信号，这样，人们就可以及时了解充电状态，非常方便。A horn is set on the casing, and when charging is completed, the controller controls the relay to cut off the power, and drives the horn to send an alarm signal, so that people can know the charging status in time, which is very convenient.

作为再进一步改进，外壳上还安装有与控制器电连接的充电指示灯和报警指示灯。As a further improvement, a charging indicator light and an alarm indicator light electrically connected to the controller are installed on the casing.

当控制器控制继电器接通时，将向充电指示灯发出充电信号，充电指示灯发光，当控制器控制继电器断开时，控制器将驱动报警指示灯闪烁，以便提醒人们。When the controller controls the relay to be connected, it will send a charging signal to the charging indicator light, and the charging indicator light will emit light; when the controller controls the relay to be disconnected, the controller will drive the alarm indicator light to flash to remind people.

综上所述，采用这种结构的充电保护器，结构合理，能够对充电器充电电流、充电时间进行控制，且使用方便，适合在各种充电场合使用，有助于延长蓄电池寿命和提高充电安全性。To sum up, the charging protector with this structure has a reasonable structure, can control the charging current and charging time of the charger, and is easy to use. safety.

附图说明Description of drawings

结合附图对本实用新型做进一步详细说明：The utility model is described in further detail in conjunction with accompanying drawing:

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

图中：1为外壳，2为控制器，3为电源线，4为插头，5为充电线，6为电流互感器，7为继电器，8为开关，9为显示屏，10为按键，11为电源指示灯，12为喇叭，13为音孔，14为充电指示灯，15为报警指示灯，16为插座，17为A/D转换器,18为电源模块。In the figure: 1 is the shell, 2 is the controller, 3 is the power cord, 4 is the plug, 5 is the charging line, 6 is the current transformer, 7 is the relay, 8 is the switch, 9 is the display screen, 10 is the button, 11 Be power indicator light, 12 is loudspeaker, and 13 is sound hole, and 14 is charging indicator light, and 15 is alarm indicator light, and 16 is socket, and 17 is A/D converter, and 18 is power supply module.

具体实施方式Detailed ways

如图1所示，该充电保护器包括外壳1，外壳1为长方形箱体，外壳1内设有延伸到外壳1外部的电源线3，电源线3外端电连接有与交流电插座配合的插头4。外壳1内还设有控制器2和电源模块18，控制器2的电源输入端与电源模块18的电源输出端电连接，电源模块18的输入端与电源线3内端电连接，这样，电源线3就通过电源模块18向控制器2供电。外壳1上安装有与充电器插头配合的插座16，插座16的输入端通过充电线5与电源线3内端电连接，这样，电源线3便通过充电线5和插座16向充电器提供交流电。充电线5上套装有电流互感器6，电流互感器6的输出端电连接有A/D转换器17，A/D转换器17的输出端与控制器2的模拟信号输入端电连接，这样，充电线5中的充电电流便通过电流互感器6检测出来，并通过A/D转换器17转换成数字信号传递给控制器2。外壳1上安装有显示屏9和按键10，显示屏9与控制器2输出端电连接，按键10与控制器2输入端电连接。通过按键10可以设定充电时间或充电最小电流等参数，并在显示屏9上显示出来。充电线3上连接有继电器7，继电器7的常开触点串接在充电线5中，继电器7的线圈与控制器2输出端电连接。当充电线3中的充电电流小于设定电流值时，电流互感器6会通过A/D转换器17向控制器2发送检测信号，控制器2便停止向继电器7供电，继电器7失电恢复常开状态，充电线5被切断，充电过程终止。当用户设定充电时间时，如果充电时间到来，控制器2依然控制继电器7切断充电线5，充电过程终止。外壳1上安装有开关8和电源指示灯11，电源指示灯11与控制器2输出端电连接，开关8串接在电源线3上，开关8闭合时，控制器2得电，并控制电源指示灯11发光。外壳1上还安装有充电指示灯14和报警指示灯15，外壳1内安装有喇叭12，外壳1上还安装有与喇叭12位置对应的音孔13。当控制器2控制电源线3、充电线5向充电器供电时，充电指示灯14发光。当控制器2控制充电线5停止供电时，报警指示灯15闪烁报警，并驱动喇叭12发出声音报警信号，以提示人们充电完毕，非常方便，避免了过充现象。As shown in Figure 1, the charging protector includes a housing 1, the housing 1 is a rectangular box, the housing 1 is provided with a power cord 3 extending to the outside of the housing 1, and the outer end of the power cord 3 is electrically connected to a plug that matches the AC socket 4. The shell 1 is also provided with a controller 2 and a power module 18, the power input end of the controller 2 is electrically connected to the power output end of the power module 18, and the input end of the power module 18 is electrically connected to the inner end of the power cord 3, so that the power supply The line 3 supplies power to the controller 2 through the power supply module 18 . A socket 16 matched with the plug of the charger is installed on the shell 1, and the input end of the socket 16 is electrically connected to the inner end of the power cord 3 through the charging line 5, so that the power line 3 provides AC power to the charger through the charging line 5 and the socket 16. . A current transformer 6 is set on the charging line 5, and the output end of the current transformer 6 is electrically connected to an A/D converter 17, and the output end of the A/D converter 17 is electrically connected to the analog signal input end of the controller 2, so that , the charging current in the charging line 5 is detected by the current transformer 6, and converted into a digital signal by the A/D converter 17 and transmitted to the controller 2. A display screen 9 and buttons 10 are mounted on the shell 1, the display screen 9 is electrically connected to the output end of the controller 2, and the button 10 is electrically connected to the input end of the controller 2. Parameters such as the charging time or the charging minimum current can be set by the button 10, and are displayed on the display screen 9. A relay 7 is connected to the charging line 3 , the normally open contact of the relay 7 is connected in series with the charging line 5 , and the coil of the relay 7 is electrically connected to the output terminal of the controller 2 . When the charging current in the charging line 3 is less than the set current value, the current transformer 6 will send a detection signal to the controller 2 through the A/D converter 17, and the controller 2 will stop supplying power to the relay 7, and the relay 7 will recover after power failure In the normally open state, the charging line 5 is cut off, and the charging process is terminated. When the user sets the charging time, if the charging time arrives, the controller 2 still controls the relay 7 to cut off the charging line 5, and the charging process is terminated. A switch 8 and a power indicator light 11 are installed on the housing 1. The power indicator light 11 is electrically connected to the output terminal of the controller 2. The switch 8 is connected in series to the power line 3. When the switch 8 is closed, the controller 2 is powered on and controls the power supply. Indicator lamp 11 is illuminated. A charging indicator light 14 and an alarm indicator light 15 are also installed on the shell 1 , a horn 12 is installed in the shell 1 , and a sound hole 13 corresponding to the position of the horn 12 is also installed on the shell 1 . When the controller 2 controls the power line 3 and the charging line 5 to supply power to the charger, the charging indicator light 14 emits light. When the controller 2 controls the charging line 5 to stop power supply, the alarm indicator light 15 flashes to the police, and drives the horn 12 to send a sound alarm signal to remind people that the charging is complete, which is very convenient and avoids overcharging.

在本实施例中，控制器2和电源模块18采用市场销售的现成产品，A/D转换器17采用公知电路，再次不再细述。In this embodiment, the controller 2 and the power module 18 are off-the-shelf products sold in the market, and the A/D converter 17 uses a known circuit, which will not be described in detail again.