CN204145035U - Novel low-cost MPPT charge controller - Google Patents
Novel low-cost MPPT charge controller Download PDFInfo
- Publication number
- CN204145035U CN204145035U CN201420665561.9U CN201420665561U CN204145035U CN 204145035 U CN204145035 U CN 204145035U CN 201420665561 U CN201420665561 U CN 201420665561U CN 204145035 U CN204145035 U CN 204145035U
- Authority
- CN
- China
- Prior art keywords
- electromagnetic relay
- resistance
- charge controller
- control circuit
- mppt charge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000005070 sampling Methods 0.000 claims abstract description 14
- 230000005669 field effect Effects 0.000 claims description 16
- 230000003287 optical effect Effects 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 15
- 238000001514 detection method Methods 0.000 abstract description 9
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000003990 capacitor Substances 0.000 description 18
- 230000006870 function Effects 0.000 description 3
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Landscapes
- Photovoltaic Devices (AREA)
Abstract
新型低成本MPPT充电控制器包括直流斩波变换电路、第一电磁继电器、第二电磁继电器、光耦合器、控制电路和采样电阻；太阳能电池板依次通过第一电磁继电器K1、直流斩波变换电路和第二电磁继电器K2连接蓄电池，蓄电池的负极通过采样电阻RR2接地，控制电路的第一电流检测端连接于采样电阻RR2和蓄电池之间；控制单路的控制端连接第一电磁继电器K1和第二电磁继电器K2；该控制电路的PWM信号端连接直流斩波变换电路。上述MPPT充电控制器有利于提高太阳能的利用率，且成本低。
The new low-cost MPPT charge controller includes a DC chopper conversion circuit, a first electromagnetic relay, a second electromagnetic relay, an optocoupler, a control circuit and a sampling resistor; the solar panel passes through the first electromagnetic relay K1 and the DC chopper conversion circuit in turn Connect the battery with the second electromagnetic relay K2, the negative pole of the battery is grounded through the sampling resistor RR2, the first current detection terminal of the control circuit is connected between the sampling resistor RR2 and the battery; the control terminal of the single control circuit is connected with the first electromagnetic relay K1 and the second 2. Electromagnetic relay K2; the PWM signal end of the control circuit is connected to the DC chopper conversion circuit. The MPPT charge controller mentioned above is beneficial to improve the utilization rate of solar energy, and has low cost.
Description
技术领域 technical field
本发明涉及一种新型低成本MPPT充电控制器。 The present invention relates to a novel low-cost MPPT charge controller.
背景技术 Background technique
MPPT（Maximum Power Point Tracking，最大功率点跟踪）控制器能够实时侦测太阳能板的发电电压，并追踪最高电压电流值(VI)，使系统输出最大功率给蓄电池充电。MPPT控制器实时采样PV输入电压与PV输入电流，然后求得输入电压与输入电流之积的最值，认为此时负载与PV是最佳匹配，将获得最大的太阳能转换，以达到最大功率点跟踪的目的。 The MPPT (Maximum Power Point Tracking) controller can detect the voltage generated by the solar panel in real time, and track the highest voltage and current value (VI), so that the system can output the maximum power to charge the battery. The MPPT controller samples the PV input voltage and PV input current in real time, and then obtains the maximum value of the product of the input voltage and input current. It is considered that the load and PV are the best match at this time, and the maximum solar energy conversion will be obtained to achieve the maximum power point. Tracking Purposes.
然而，由于现有的MPPT控制器的最大功率跟踪是基于追踪太阳能电池板的电流和电压，而太阳能电池板的输出功率需要经过各级电路如整流电路才输入至蓄电池，为弥补因此产出的误差，需要增设其他电路或增加测量数据，使得电路结构复杂，成本高昂，且太阳能利用率低。 However, since the maximum power tracking of the existing MPPT controller is based on tracking the current and voltage of the solar panel, and the output power of the solar panel needs to pass through various stages of circuits such as a rectifier circuit before being input to the battery, in order to compensate for the resulting output Error, it is necessary to add other circuits or increase the measurement data, which makes the circuit structure complex, high cost, and low utilization rate of solar energy.
发明内容 Contents of the invention
针对现有技术的不足，本发明的目的旨在于提供一种可解决上述技术问题的新型低成本MPPT充电控制器。 Aiming at the deficiencies of the prior art, the object of the present invention is to provide a new low-cost MPPT charge controller that can solve the above technical problems.
为实现上述目的，本发明采用如下技术方案： To achieve the above object, the present invention adopts the following technical solutions:
一种MPPT充电控制器，其包括直流斩波变换电路、第一电磁继电器、第二电磁继电器、光耦合器、控制电路和采样电阻； A MPPT charging controller, which includes a DC chopper conversion circuit, a first electromagnetic relay, a second electromagnetic relay, an optocoupler, a control circuit and a sampling resistor;
太阳能电池板依次通过第一电磁继电器K1、直流斩波变换电路和第二电磁继电器K2连接蓄电池，蓄电池的负极通过采样电阻RR2接地，控制电路的第一电流检测端连接于采样电阻RR2和蓄电池之间；控制电路的控制端连接第一电磁继电器K1和第二电磁继电器K2； The solar panel is connected to the battery through the first electromagnetic relay K1, the DC chopper conversion circuit and the second electromagnetic relay K2 in turn, the negative pole of the battery is grounded through the sampling resistor RR2, and the first current detection terminal of the control circuit is connected between the sampling resistor RR2 and the battery. between; the control end of the control circuit is connected to the first electromagnetic relay K1 and the second electromagnetic relay K2;
该直流斩波变换电路包括电容C1至电容C5、场效应管Q1、二极管D1和电感L；电容C1至电容C3相并联，场效应管Q1的漏极连接电容C1的一端，还连接第一电磁继电器K1，电容C1的另一端接地，场效应管Q1的栅极连接控制电路的PWM信号端，场效应管Q1的源极通过电感L连接第二电磁继电器K2，电容C4和电容C5相并联，电容C4的一端连接电感L和第二电磁继电器K2之间，电容C4的另一端接地，二极管D1的阴极连接场效应管Q1的源极，二极管D1的阳极接地。 The DC chopper conversion circuit includes capacitors C1 to C5, field effect transistor Q1, diode D1 and inductor L; capacitors C1 to capacitor C3 are connected in parallel, and the drain of field effect transistor Q1 is connected to one end of capacitor C1 and also connected to the first electromagnetic Relay K1, the other end of the capacitor C1 is grounded, the gate of the field effect transistor Q1 is connected to the PWM signal terminal of the control circuit, the source of the field effect transistor Q1 is connected to the second electromagnetic relay K2 through the inductor L, and the capacitor C4 and the capacitor C5 are connected in parallel. One end of the capacitor C4 is connected between the inductor L and the second electromagnetic relay K2, the other end of the capacitor C4 is grounded, the cathode of the diode D1 is connected to the source of the field effect transistor Q1, and the anode of the diode D1 is grounded.
优选地，MPPT充电控制器还包括电阻R3和电阻R4，电阻R3的一端连接蓄电池的正极和第二电磁继电器K2之间，电阻R3的另一端通过电阻R4接地；控制电路的第一电压检测端连接于电阻R3和电阻R4之间。 Preferably, the MPPT charging controller also includes a resistor R3 and a resistor R4, one end of the resistor R3 is connected between the positive pole of the battery and the second electromagnetic relay K2, and the other end of the resistor R3 is grounded through the resistor R4; the first voltage detection terminal of the control circuit Connect between resistor R3 and resistor R4.
优选地，MPPT充电控制器还包括电阻R1和电阻R2，电阻R1的一端连接太阳能电池板的正输出端和第一电磁继电器K1之间，电阻R1的另一端通过电阻R2接地；控制电路的第二电压检测端连接于电阻R1和电阻R2之间。 Preferably, the MPPT charging controller also includes a resistor R1 and a resistor R2, one end of the resistor R1 is connected between the positive output terminal of the solar panel and the first electromagnetic relay K1, and the other end of the resistor R1 is grounded through the resistor R2; the second end of the control circuit The two voltage detection terminals are connected between the resistor R1 and the resistor R2.
优选地，MPPT充电控制器还包括电阻RR1，太阳能电池板的负输出端通过电阻RR1接地，控制电路的第二电流检测端连接太阳能电池板和电阻RR1之间。 Preferably, the MPPT charging controller further includes a resistor RR1, the negative output terminal of the solar panel is grounded through the resistor RR1, and the second current detection terminal of the control circuit is connected between the solar panel and the resistor RR1.
优选地，MPPT充电控制器还包括连接控制电路的温度传感器和蜂鸣器。 Preferably, the MPPT charge controller also includes a temperature sensor and a buzzer connected to the control circuit.
优选地，MPPT充电控制器还包括连接控制电路的液晶显示屏和键盘扫描电路。 Preferably, the MPPT charging controller also includes a liquid crystal display and a keyboard scanning circuit connected to the control circuit.
优选地，MPPT充电控制器还包括连接控制电路的实时时钟芯片和flash存储器。 Preferably, the MPPT charging controller also includes a real-time clock chip and a flash memory connected to the control circuit.
本发明的有益效果至少包括以下几点： The beneficial effects of the present invention at least include the following points:
上述MPPT充电控制器采用直流斩波变换电路，可通过实时采集蓄电池的充电电流来调节蓄电池的最佳充电功率，有利于提高太阳能的利用率，且成本低。上述第一电磁继电器K1和第二电磁继电器K2起输入极性和输入短路保护作用。 The above-mentioned MPPT charging controller adopts a DC chopper conversion circuit, which can adjust the optimal charging power of the battery by collecting the charging current of the battery in real time, which is conducive to improving the utilization rate of solar energy and has low cost. The above-mentioned first electromagnetic relay K1 and second electromagnetic relay K2 play the role of input polarity and input short-circuit protection.
附图说明 Description of drawings
图1为本发明MPPT充电控制器的较佳实施方式的电路结构示意图。 FIG. 1 is a schematic diagram of the circuit structure of a preferred embodiment of the MPPT charging controller of the present invention.
具体实施方式 Detailed ways
下面将结合附图以及具体实施方式，对本发明做进一步描述： Below in conjunction with accompanying drawing and specific embodiment, the present invention will be further described:
请参见1，本发明涉及一种MPPT充电控制器，其较佳实施方式包括直流斩波变换电路10、第一电磁继电器K1、第二电磁继电器K2、光耦合器、控制电路和采样电阻RR2。 Please refer to 1, the present invention relates to an MPPT charge controller, and its preferred embodiment includes a DC chopper conversion circuit 10, a first electromagnetic relay K1, a second electromagnetic relay K2, an optocoupler, a control circuit and a sampling resistor RR2.
太阳能电池板依次通过第一电磁继电器K1、直流斩波变换电路10和第二电磁继电器K2连接蓄电池BAT，蓄电池的负极通过采样电阻RR2接地，控制电路的第一电流检测端连接于采样电阻RR2和蓄电池之间。控制电路的控制端连接第一电磁继电器K1和第二电磁继电器K2。 The solar battery panel is connected to the battery BAT through the first electromagnetic relay K1, the DC chopper conversion circuit 10 and the second electromagnetic relay K2 in sequence, the negative pole of the battery is grounded through the sampling resistor RR2, and the first current detection terminal of the control circuit is connected to the sampling resistor RR2 and between batteries. The control terminal of the control circuit is connected to the first electromagnetic relay K1 and the second electromagnetic relay K2.
该直流斩波变换电路10包括电容C1至电容C5、场效应管Q1、二极管D1和电感L。电容C1至电容C3相并联，场效应管Q1的漏极连接电容C1的一端，还连接第一电磁继电器K1，电容C1的另一端接地，场效应管Q1的栅极连接控制电路的PWM信号端，场效应管Q1的源极通过电感L连接第二电磁继电器K2，电容C4和电容C5相并联，电容C4的一端连接电感L和第二电磁继电器K2之间，电容C4的另一端接地，二极管D1的阴极连接场效应管Q1的源极，二极管D1的阳极接地。 The DC chopper conversion circuit 10 includes capacitors C1 to C5 , a field effect transistor Q1 , a diode D1 and an inductor L. The capacitor C1 to the capacitor C3 are connected in parallel, the drain of the field effect transistor Q1 is connected to one end of the capacitor C1, and also connected to the first electromagnetic relay K1, the other end of the capacitor C1 is grounded, and the gate of the field effect transistor Q1 is connected to the PWM signal terminal of the control circuit , the source of the field effect transistor Q1 is connected to the second electromagnetic relay K2 through the inductor L, the capacitor C4 and the capacitor C5 are connected in parallel, one end of the capacitor C4 is connected between the inductor L and the second electromagnetic relay K2, the other end of the capacitor C4 is grounded, and the diode The cathode of D1 is connected to the source of field effect transistor Q1, and the anode of diode D1 is grounded.
太阳能电池板产生的充电电压和电流通过直流斩波变换电路10供给蓄电池充电，充电电流流经采样电阻RR2产生采样电压，控制电路根据采样电压基于MPPT算法通过光耦合器发送PWM（Pulse Width Modulation，脉冲宽度调制）信号至直流斩波变换电路10的场效应管Q1，以调节直流斩波变换电路10的输出电压，从而提高蓄电池的充电效率，提高太阳能的利用率。上述MPPT算法由现有技术可获知，无需改进。 The charging voltage and current generated by the solar panel are supplied to the storage battery through the DC chopper conversion circuit 10, and the charging current flows through the sampling resistor RR2 to generate a sampling voltage. The control circuit sends PWM (Pulse Width Modulation, Pulse Width Modulation, Pulse Width Modulation) signal to the field effect transistor Q1 of the DC chopper conversion circuit 10 to adjust the output voltage of the DC chopper conversion circuit 10, thereby improving the charging efficiency of the battery and improving the utilization rate of solar energy. The aforementioned MPPT algorithm is known from the prior art and does not need to be improved.
上述MPPT充电控制器采用该直流斩波变换电路，可通过实时追踪蓄电池的充电电流来调节蓄电池的最佳充电功率，有利于提高太阳能的利用率，且成本低。上述第一电磁继电器K1和第二电磁继电器K2起输入极性和输入短路保护作用。 The above-mentioned MPPT charging controller adopts the DC chopper conversion circuit, which can adjust the optimal charging power of the battery by tracking the charging current of the battery in real time, which is conducive to improving the utilization rate of solar energy and has low cost. The above-mentioned first electromagnetic relay K1 and second electromagnetic relay K2 play the role of input polarity and input short-circuit protection.
MPPT充电控制器还包括电阻R3和电阻R4，电阻R3的一端连接蓄电池的正极和第二电磁继电器K2之间，电阻R3的另一端通过电阻R4接地。控制电路的第一电压检测端连接于电阻R3和电阻R4之间，以检测蓄电池的充电电压。 The MPPT charging controller also includes a resistor R3 and a resistor R4, one end of the resistor R3 is connected between the positive pole of the battery and the second electromagnetic relay K2, and the other end of the resistor R3 is grounded through the resistor R4. The first voltage detection terminal of the control circuit is connected between the resistor R3 and the resistor R4 to detect the charging voltage of the storage battery.
MPPT充电控制器还包括电阻R1和电阻R2，电阻R1的一端连接太阳能电池板的正输出端和第一电磁继电器K1之间，电阻R1的另一端通过电阻R2接地。控制电路的第二电压检测端连接于电阻R1和电阻R2之间，以检测太阳能电池板的输出电压。 The MPPT charging controller also includes a resistor R1 and a resistor R2. One end of the resistor R1 is connected between the positive output terminal of the solar panel and the first electromagnetic relay K1, and the other end of the resistor R1 is grounded through the resistor R2. The second voltage detection terminal of the control circuit is connected between the resistors R1 and R2 to detect the output voltage of the solar panel.
MPPT充电控制器还包括电阻RR1，太阳能电池板的负输出端通过电阻RR1接地，控制电路的第二电流检测端连接太阳能电池板和电阻RR1之间，以检测太阳能电池板的输出电流。 The MPPT charge controller also includes a resistor RR1, the negative output terminal of the solar panel is grounded through the resistor RR1, and the second current detection terminal of the control circuit is connected between the solar panel and the resistor RR1 to detect the output current of the solar panel.
MPPT充电控制器还包括连接控制电路的温度传感器和蜂鸣器，以实现过温监测功能。 The MPPT charge controller also includes a temperature sensor and a buzzer connected to the control circuit to realize the over-temperature monitoring function.
MPPT充电控制器还包括连接控制电路的液晶显示屏和键盘扫描电路，以实现人机交互功能。 The MPPT charging controller also includes a liquid crystal display and a keyboard scanning circuit connected to the control circuit to realize the human-computer interaction function.
MPPT充电控制器还包括连接控制电路的实时时钟芯片和flash存储器，以实现日志记录功能。 The MPPT charge controller also includes a real-time clock chip and flash memory connected to the control circuit to realize the logging function.
对于本领域的技术人员来说，可根据以上描述的技术方案以及构思，做出其它各种相应的改变以及变形，而所有的这些改变以及变形都应该属于本发明权利要求的保护范围之内。 For those skilled in the art, various other corresponding changes and modifications can be made according to the technical solutions and ideas described above, and all these changes and modifications should fall within the protection scope of the claims of the present invention.
Claims (7)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420665561.9U CN204145035U (en) | 2014-11-10 | 2014-11-10 | Novel low-cost MPPT charge controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420665561.9U CN204145035U (en) | 2014-11-10 | 2014-11-10 | Novel low-cost MPPT charge controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204145035U true CN204145035U (en) | 2015-02-04 |
Family
ID=52421700
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420665561.9U Expired - Lifetime CN204145035U (en) | 2014-11-10 | 2014-11-10 | Novel low-cost MPPT charge controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204145035U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108123533A (en) * | 2016-11-30 | 2018-06-05 | 镇江石鼓文智能化系统开发有限公司 | A kind of solar charging controller system |
-
2014
- 2014-11-10 CN CN201420665561.9U patent/CN204145035U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108123533A (en) * | 2016-11-30 | 2018-06-05 | 镇江石鼓文智能化系统开发有限公司 | A kind of solar charging controller system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101630171B (en) | Segmented Adaptive Hill Climbing Method and System Applied to Maximum Power Tracking of Photovoltaic Cells | |
| CN105116956B (en) | A kind of maximal power tracing controlling apparatus applied to photovoltaic generating system | |
| CN103855790A (en) | Intelligent photovoltaic power generation system with energy storage function and control method of system | |
| CN103440019A (en) | Analogy control circuit capable of achieving photovoltaic cell maximum power point tracing | |
| CN203465354U (en) | Detection device of DC power supply insulation resistance to ground | |
| CN105897161B (en) | A kind of test method of the outdoor photovoltaic module detecting system based on dynamic capacity charge and discharge | |
| CN107153137A (en) | The monitoring device and method of DCM booster converters inductance and output capacitance | |
| CN103219765B (en) | Photovoltaic charging controller | |
| CN107248844A (en) | A kind of photo-voltaic power supply | |
| CN204462257U (en) | Capacity of super capacitor and DC internal resistance pick-up unit | |
| CN104539170A (en) | Three-level Cuk voltage regulation constant current source and operation method thereof | |
| CN107681690B (en) | Photovoltaic power station transient equivalent potential online identification method | |
| CN105137200A (en) | Monitoring device of CCM Buck-Boost convertor output capacitor and method thereof | |
| CN201887674U (en) | Simple regulated power supply | |
| CN204145035U (en) | Novel low-cost MPPT charge controller | |
| CN103414333B (en) | A kind of active power factor correction controller | |
| CN206472100U (en) | Integrated photovoltaic panel data acquisition device | |
| CN204068336U (en) | A kind of charging circuit | |
| CN204681087U (en) | Solar charging device anti-surge circuit | |
| CN203787978U (en) | Solar charging circuit and solar mobile power supply | |
| CN205407664U (en) | Novel photovoltaic power generation controller | |
| CN210111678U (en) | MPPT solar energy collecting circuit and solar energy equipment | |
| CN202798085U (en) | A Simplified MPPT Control Circuit for Battery Charging | |
| CN203733025U (en) | Preceding-stage voltage regulation type solar MPPT system based on final power feedback | |
| CN103219894B (en) | Ultra-low-voltage boosting system and control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150204 |
|
| CX01 | Expiry of patent term |