技术领域technical field
本实用新型属于电子设备领域，具体涉及一种基于电子实验室无线充电装置。The utility model belongs to the field of electronic equipment, in particular to a wireless charging device based on an electronic laboratory.
背景技术Background technique
在学校电子实验室中，由于教学与实验的要求，往往需要用到万用表等一些使用电池的仪器，而目前的电子实验室日常管理过程中，万用表等仪器大多都使用一次性的电池供电，电池储能较少，而且更换很频繁，使得能源利用率低，还容易对环境造成污染，而且一般电子实验室的仪器仪表较多，也不便于管理与更换电池。In the school electronic laboratory, due to the requirements of teaching and experiments, it is often necessary to use some instruments such as multimeters that use batteries. However, in the current daily management of electronic laboratories, most of the instruments such as multimeters use disposable batteries. There is less energy storage and frequent replacement, which makes the energy utilization rate low and easily pollutes the environment. In addition, there are many instruments and meters in general electronic laboratories, which is not easy to manage and replace batteries.
对于电子实验室的小功率用电器实现无线充电功能能够大大方便实验室的管理，而目前市场较多的无线充电设备均定位于移动市场，而与小功率用电器（万用表等）的无线充电设备较少，针对于此状况，本专利使用Qi协议的BQ500211芯片构成无线充电发送端平台，同时将BQ51013A组成的无线充电接收电路嵌入小功率用电器中，实现实验室设备的无线充电，如万用表采用8.4V方块电池供电，使用无线充电之后，无需对于万用表进行电池的更换，只需将万用表放在合适位置上，实现实验室万用表的无线充电功能，十分便捷，可以随时充电，同时系统具有充满自动断电能力，无需人为干预，管理方便。For the low-power electrical appliances in the electronic laboratory, the wireless charging function can greatly facilitate the management of the laboratory. At present, more wireless charging equipment in the market are positioned in the mobile market, and wireless charging equipment with low-power electrical appliances (multimeters, etc.) For this situation, this patent uses the BQ500211 chip of the Qi protocol to form a wireless charging transmitter platform, and at the same time embeds the wireless charging receiving circuit composed of BQ51013A into a low-power electrical appliance to realize wireless charging of laboratory equipment. For example, a multimeter adopts 8.4V square battery power supply, after using wireless charging, there is no need to replace the battery of the multimeter, just put the multimeter in a suitable position to realize the wireless charging function of the laboratory multimeter, which is very convenient and can be charged at any time. Power-off capability, without human intervention, easy to manage.
发明内容Contents of the invention
本实用新型所要解决的技术问题是针对上述现有技术的不足，而提供的一种能给多台设备充电，且适用于万用表等小功率用电器充电的无线充电装置。The technical problem to be solved by the utility model is to provide a wireless charging device that can charge multiple devices and is suitable for charging low-power electrical appliances such as multimeters.
实用新型的目的是这样实现的：The purpose of utility model is to realize like this:
一种基于电子实验室无线充电装置，它包括主控制器，主控制器的输入端与输入装置连接，输入装置的输出端与至少1个充电单元连接，充电单元包括发送端控制模块、与发送端控制模块输出端连接的逆变电路、与逆变电路输出端连接的线圈互感耦合电路、与线圈互感耦合电路双向口连接的接收端控制模块、升压电路、充电电路、电池充电状态测量模块，接收端控制模块输出端与升压电路连接，升压电路输出端与充电电路连接，充电电路输出端与电池充电状态测量模块连接。A wireless charging device based on an electronic laboratory, which includes a main controller, the input end of the main controller is connected to the input device, the output end of the input device is connected to at least one charging unit, and the charging unit includes a sending end control module and a sending end control module. The inverter circuit connected to the output end of the terminal control module, the coil mutual inductance coupling circuit connected to the output end of the inverter circuit, the receiving end control module connected to the bidirectional port of the coil mutual inductance coupling circuit, the boost circuit, the charging circuit, and the battery charging state measurement module , the output end of the receiving end control module is connected to the boost circuit, the output end of the boost circuit is connected to the charging circuit, and the output end of the charging circuit is connected to the battery charging state measurement module.
上述升压电路为Boost升压电路。The above-mentioned boosting circuit is a Boost boosting circuit.
上述逆变电路为全桥逆变电路。The above inverter circuit is a full bridge inverter circuit.
上述主控制器为单片机。The above-mentioned main controller is a single-chip microcomputer.
上述充电电路的恒流源由稳压源和三极管构成。The constant current source of the above-mentioned charging circuit is composed of a stabilized voltage source and a triode.
上述充电电路还包括运算放大器。The charging circuit above also includes an operational amplifier.
上述充电电路为恒流充电控制电路。The above charging circuit is a constant current charging control circuit.
上述电池充电状态测量模块为包括INA213芯片的电流检测电路。The above-mentioned battery charge state measurement module is a current detection circuit including an INA213 chip.
采用上述结构，该无线充电系统可以搭成一个大型的无线充电平台，可同时对多台用电设备进行充电，并具有异物检测和充完电自动断电功能，同时对于单独充电通道而言，待机功耗只有0.2W左右，充电时功率约2至3W，用电量少，效率较高，而且线圈之间加了隔磁片减少电磁的干扰，有利于节能环保。同时增加单片机和触控屏控制，可方便检查充电平台的状态和检测错误，大大方便操作和管理。With the above structure, the wireless charging system can be built into a large wireless charging platform, which can charge multiple electric devices at the same time, and has the functions of foreign object detection and automatic power off after charging. At the same time, for a single charging channel, The standby power consumption is only about 0.2W, and the charging power is about 2 to 3W. The power consumption is low and the efficiency is high. Moreover, a magnetic shield is added between the coils to reduce electromagnetic interference, which is conducive to energy saving and environmental protection. At the same time, the addition of single-chip microcomputer and touch screen control can facilitate checking the status of the charging platform and detecting errors, which greatly facilitates operation and management.
附图说明Description of drawings
下面结合附图和实施例对本实用新型作进一步说明：Below in conjunction with accompanying drawing and embodiment the utility model is further described:
图1为本实用新型的结构框图；Fig. 1 is a block diagram of the utility model;
图2为实施例中主控制器的电路图；Fig. 2 is the circuit diagram of master controller in the embodiment;
图3为实施例中充电电路的电路图。Fig. 3 is a circuit diagram of the charging circuit in the embodiment.
具体实施方式detailed description
图1所示一种基于电子实验室无线充电装置，它包括主控制器1，主控制器1的输入端与输入装置2连接，输入装置2的输出端与至少1个充电单元连接，充电单元包括发送端控制模块3、与发送端控制模块3输出端连接的逆变电路4、与逆变电路4输出端连接的线圈互感耦合电路5、与线圈互感耦合电路5双向口连接的接收端控制模块6、升压电路7、充电电路8、电池充电状态测量模块9，接收端控制模块6输出端与升压电路7连接，升压电路7输出端与充电电路8连接，充电电路8输出端与电池充电状态测量模块9连接。Figure 1 shows a wireless charging device based on an electronic laboratory, which includes a main controller 1, the input end of the main controller 1 is connected to the input device 2, the output end of the input device 2 is connected to at least one charging unit, and the charging unit It includes a sending end control module 3, an inverter circuit 4 connected to the output end of the sending end control module 3, a coil mutual inductance coupling circuit 5 connected to the output end of the inverter circuit 4, and a receiving end control circuit connected to the two-way port of the coil mutual inductance coupling circuit 5 Module 6, boost circuit 7, charging circuit 8, battery charging state measurement module 9, the output terminal of the receiving end control module 6 is connected to the boost circuit 7, the output terminal of the boost circuit 7 is connected to the charging circuit 8, and the output terminal of the charging circuit 8 Connect with the battery state of charge measurement module 9.
所述升压电路7为Boost升压电路。The voltage boosting circuit 7 is a Boost voltage boosting circuit.
所述逆变电路4为全桥逆变电路。The inverter circuit 4 is a full bridge inverter circuit.
所述主控制器1为单片机。The main controller 1 is a single-chip microcomputer.
所述充电电路8为恒流充电控制电路。The charging circuit 8 is a constant current charging control circuit.
所述电池充电状态测量模块9为包括INA213芯片的电流检测电路。The battery charging state measurement module 9 is a current detection circuit including an INA213 chip.
如图2所示，优选的，主控制器是型号为STM32F103ZET6的单片机。As shown in FIG. 2, preferably, the main controller is a single-chip microcomputer modeled as STM32F103ZET6.
如图3所示，充电电路8的恒流源由稳压源和三极管构成，充电电路8还包括运算放大器。As shown in FIG. 3 , the constant current source of the charging circuit 8 is composed of a constant voltage source and a triode, and the charging circuit 8 also includes an operational amplifier.
可选的，输入装置2为触摸屏。Optionally, the input device 2 is a touch screen.
无线充电发送端：Wireless charging sender:
1）无线充电发送端使用市电220V交流电源供电，通过变压器整流再经TPS54331开关电源降压后，输出5V电压，用于整个无线充电平台的供电， 同时使用ina214和一20毫欧姆的采样电阻对电路的总电流进行采样。1) The wireless charging transmitter is powered by 220V AC power from the mains. After rectified by the transformer and then stepped down by the TPS54331 switching power supply, the output voltage is 5V, which is used for the power supply of the entire wireless charging platform. Ina214 and a 20 milliohm sampling resistor are used at the same time. The total current of the circuit is sampled.
2）发送端由BQ500211芯片控制，用于处理通讯信息、发送、终止电能传输等，同时将各个充电状态交由STM32F103ZET6处理。2) The sending end is controlled by the BQ500211 chip, which is used to process communication information, send, terminate power transmission, etc. At the same time, each charging state is handed over to STM32F103ZET6 for processing.
3）DC-AC转换模块由2片TPS28225构成的全桥整流组成，将直流电转换为交流电，同时电能由一个WPC A5线圈发射出去。3) The DC-AC conversion module is composed of two full-bridge rectifiers composed of TPS28225, which converts DC power into AC power, and at the same time the power is emitted by a WPC A5 coil.
无线充电接收端：Wireless charging receiver:
1）接收端整流和控制电路由一片BQ51013A构成，接收线圈使用WPCA5线圈，最后输出5V电压，最大输出电流为1A：1) The rectification and control circuit at the receiving end is composed of a piece of BQ51013A, the receiving coil uses a WPCA5 coil, and finally outputs a 5V voltage with a maximum output current of 1A:
2）Boost升压，因BQ51013输出的电压为5V，万用表供电电池为8.4V电压，因此必须通过升压才能给电池充电。升压模块使用TPS1170芯片，最后输出电压为13.5V：2) Boost voltage, because the output voltage of BQ51013 is 5V, and the voltage of the battery powered by the multimeter is 8.4V, so the battery must be charged through boost. The boost module uses the TPS1170 chip, and the final output voltage is 13.5V:
3）充电和保护电路：为了保护电池并防止过充，电池充电时采用50mA恒流充电，恒流源由TL431和一个NPN三极管构成，同时用LM321单运放做比较器检测电池的电压，当电池电压达到10V时，产生充电完成信号至BQ51013A的充电状态判断端口，并由芯片发出终止信号到发射端，发射端终止充电，进入充电完成模式。3) Charging and protection circuit: In order to protect the battery and prevent overcharging, the battery is charged with a constant current of 50mA. The constant current source is composed of TL431 and an NPN transistor. When the battery voltage reaches 10V, a charging completion signal is generated to the charging state judgment port of BQ51013A, and the chip sends a termination signal to the transmitter, and the transmitter terminates charging and enters the charging completion mode.
采用上述结构，使用时，该无线充电系统可以搭成一个大型的无线充电平台，可同时对多台用电设备进行充电，并具有异物检测和充完电自动断电功能，同时对于单独充电通道而言，待机功耗只有0.2W左右，充电时功率约2至3W，用电量少，效率较高，而且线圈之间加了隔磁片减少电磁的干扰，有利于节能环保。同时增加单片机和触控屏控制，可方便检查充电平台的状态和检测错误，大大方便操作和管理。With the above structure, when in use, the wireless charging system can be built into a large-scale wireless charging platform, which can charge multiple electric devices at the same time, and has the functions of foreign object detection and automatic power off after charging. In terms of power consumption, the standby power consumption is only about 0.2W, and the charging power is about 2 to 3W. The power consumption is low and the efficiency is high. Moreover, a magnetic shield is added between the coils to reduce electromagnetic interference, which is conducive to energy saving and environmental protection. At the same time, the single-chip microcomputer and touch screen control can be added, which can conveniently check the status of the charging platform and detect errors, which greatly facilitates operation and management.
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720251314.8UCN206517120U (en) | 2017-03-15 | 2017-03-15 | A kind of wireless charging device based on electronic leaning laboratory |
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720251314.8UCN206517120U (en) | 2017-03-15 | 2017-03-15 | A kind of wireless charging device based on electronic leaning laboratory |
| Publication Number | Publication Date |
|---|---|
| CN206517120Utrue CN206517120U (en) | 2017-09-22 |
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720251314.8UExpired - Fee RelatedCN206517120U (en) | 2017-03-15 | 2017-03-15 | A kind of wireless charging device based on electronic leaning laboratory |
| Country | Link |
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| CN (1) | CN206517120U (en) |
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107798972A (en)* | 2017-12-01 | 2018-03-13 | 中山市榄商置业发展有限公司 | A wireless charging experimental device for information technology teaching |
| CN108681268A (en)* | 2018-03-30 | 2018-10-19 | 苏州诺登德智能科技有限公司 | A kind of drive ground pressure acquisition system |
| CN109887388A (en)* | 2018-12-06 | 2019-06-14 | 广州先觉电子科技有限公司 | Wireless charging real teaching plate |
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107798972A (en)* | 2017-12-01 | 2018-03-13 | 中山市榄商置业发展有限公司 | A wireless charging experimental device for information technology teaching |
| CN108681268A (en)* | 2018-03-30 | 2018-10-19 | 苏州诺登德智能科技有限公司 | A kind of drive ground pressure acquisition system |
| CN109887388A (en)* | 2018-12-06 | 2019-06-14 | 广州先觉电子科技有限公司 | Wireless charging real teaching plate |
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| CF01 | Termination of patent right due to non-payment of annual fee | Granted publication date:20170922 Termination date:20180315 |