CN204391848U - A kind of solar charging controller for electric consumption - Google Patents
A kind of solar charging controller for electric consumption Download PDFInfo
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- CN204391848U CN204391848U CN201520116162.1U CN201520116162U CN204391848U CN 204391848 U CN204391848 U CN 204391848U CN 201520116162 U CN201520116162 U CN 201520116162U CN 204391848 U CN204391848 U CN 204391848U
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- 238000010277 constant-current charging Methods 0.000 description 1
- 238000010281 constant-current constant-voltage charging Methods 0.000 description 1
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Abstract
本实用新型公开一种太阳能充电控制装置，包括太阳能电池阵列、充电主电路、蓄电池、驱动电路、控制电路、PWM波产生电路、电流电压采集电路、辅助电源电路、电压跟随电路、信号调理电路、温度检测电路、键盘电路、显示电路、通讯电路。所述的太阳能电池阵列、充电主电路、蓄电池依次相连，所述的电流电压采集电路与充电主电路相连，所述的PWM波产生电路、电压跟随电路、信号调理电路、键盘电路、显示电路、通讯电路、温度检测电路分别与控制电路相连，本实用新型的优点在于能最大限度的利用太阳能，提高充电效率，延长蓄电池的使用寿命，功能强大。
The utility model discloses a solar charging control device, which comprises a solar cell array, a charging main circuit, a storage battery, a driving circuit, a control circuit, a PWM wave generating circuit, a current and voltage collecting circuit, an auxiliary power supply circuit, a voltage following circuit, a signal conditioning circuit, Temperature detection circuit, keyboard circuit, display circuit, communication circuit. The solar cell array, the charging main circuit, and the storage battery are connected in sequence, the current and voltage acquisition circuit is connected to the charging main circuit, the PWM wave generation circuit, the voltage follower circuit, the signal conditioning circuit, the keyboard circuit, the display circuit, The communication circuit and the temperature detection circuit are respectively connected with the control circuit. The utility model has the advantages of utilizing solar energy to the greatest extent, improving charging efficiency, prolonging the service life of the storage battery, and having powerful functions.
Description
一、技术领域1. Technical field
本实用新型涉及一种充电控制装置，具体为应用于太阳能光伏发电系统的蓄电池充电控制装置。The utility model relates to a charging control device, in particular to a storage battery charging control device applied to a solar photovoltaic power generation system.
二、背景技术2. Background technology
面对能源短缺和环境污染的双重挑战，发展新能源已是大势所趋。太阳能以其储量大、分布广、易获取等特点得到各国倾爱，但其不稳定性使得对太阳能的开发利用很重要的一个环节就是储存。通过蓄电池储存太阳能发出的电能是目前普遍接受的方式，因此，太阳能充电控制技术得到快速发展。Facing the dual challenges of energy shortage and environmental pollution, the development of new energy has become the general trend. Solar energy is favored by various countries for its large reserves, wide distribution, and easy access. However, its instability makes the development and utilization of solar energy a very important part of storage. It is a generally accepted way to store the electric energy generated by solar energy through storage batteries. Therefore, the solar charging control technology has been developed rapidly.
在现有技术中，传统的太阳能光伏发电系统的充电控制器多采用纯硬件电路或者低端的微处理器，充电方式也多是恒流或恒压方式，没有考虑到蓄电池的充电特性，导致充电效率、控制精度偏低，还会影响蓄电池的使用寿命。采用PWM的充电控制器的PWM波多由主控制芯片产生，影响主控制芯片对充电电路的控制，降低了控制器的稳定性。大多数的太阳能充电控制装置没有最大功率点电跟踪(MPPT)功能，这就使得充电控制装置的能量装换效率较低。In the prior art, the charging controllers of traditional solar photovoltaic power generation systems mostly use pure hardware circuits or low-end microprocessors, and the charging methods are mostly constant current or constant voltage methods, which do not take into account the charging characteristics of the battery, resulting in The charging efficiency and control accuracy are low, which will also affect the service life of the battery. The PWM wave of the charging controller using PWM is mostly generated by the main control chip, which affects the control of the charging circuit by the main control chip and reduces the stability of the controller. Most solar charge control devices do not have a maximum power point tracking (MPPT) function, which makes the energy conversion efficiency of the charge control device low.
三、发明内容3. Contents of the invention
鉴于现在技术存在上述不足，本实用新型的目的在于提供一种基于ARM的太阳能充电控制装置。In view of the above-mentioned deficiencies in the existing technology, the purpose of this utility model is to provide an ARM-based solar charging control device.
本实用新型解决上述问题的技术方案如下：The technical scheme that the utility model solves the above-mentioned problem is as follows:
本实用新型的太阳能充电控制装置，包括太阳能电池阵列、充电主电路、蓄电池、驱动电路、控制电路、PWM波产生电路、电流电压采集电路、辅助电源电路、电压跟随电路、信号调理电路、温度检测电路、键盘电路、显示电路、通讯电路。所述的太阳能电池阵列、充电主电路、蓄电池依次相连，所述的电流电压采集电路与充电主电路相连，所述的PWM波产生电路、电压跟随电路、信号调理电路、键盘电路、显示电路、通讯电路、温度检测电路分别与控制电路相连，所述的PWM波产生电路与驱动电路相连，所述的驱动电路与充电主电路相连。The solar charging control device of the utility model includes a solar battery array, a charging main circuit, a storage battery, a driving circuit, a control circuit, a PWM wave generating circuit, a current and voltage acquisition circuit, an auxiliary power supply circuit, a voltage following circuit, a signal conditioning circuit, and a temperature detection circuit. circuit, keyboard circuit, display circuit, communication circuit. The solar cell array, the charging main circuit, and the storage battery are connected in sequence, the current and voltage acquisition circuit is connected to the charging main circuit, the PWM wave generation circuit, the voltage follower circuit, the signal conditioning circuit, the keyboard circuit, the display circuit, The communication circuit and the temperature detection circuit are respectively connected to the control circuit, the PWM wave generating circuit is connected to the driving circuit, and the driving circuit is connected to the charging main circuit.
所述的充电主电路选用BUCK电路，BUCK电路中开关器件选用MOSFET。A BUCK circuit is selected as the charging main circuit, and a MOSFET is selected as a switching device in the BUCK circuit.
所述的驱动电路选用IR2117。The drive circuit is selected IR2117.
所述的控制电路选用ARM处理器LPC2148作为控制核心，接收电流电压采集电路的电流电压信号和温度检测电路的温度信号，进行计算后输出信号到PWM波产生电路。The control circuit selects the ARM processor LPC2148 as the control core, receives the current and voltage signals from the current and voltage acquisition circuit and the temperature signal from the temperature detection circuit, performs calculations, and outputs the signals to the PWM wave generation circuit.
所述的PWM波产生电路选用TL494。The PWM wave generating circuit is TL494.
所述的辅助电源电路由蓄电池供电，变换成稳定的+10V、-9V电源，为各电路供电。控制电路所需的+3.3V、+5V电源可由+10V电源通过稳压芯片LD1117得到，并有有效的过温和过流保护。The auxiliary power supply circuit is powered by a storage battery, which is transformed into stable +10V and -9V power supplies to supply power to each circuit. The +3.3V and +5V power required by the control circuit can be obtained from the +10V power supply through the voltage regulator chip LD1117, and it has effective over-temperature and over-current protection.
所述的温度采集电路选用DS18B20。The temperature acquisition circuit is DS18B20.
所述的通讯电路选用RS232接口。The communication circuit adopts RS232 interface.
本实用新型的优点如下：The utility model has the following advantages:
本太阳能充电控制装置采用数字——模拟相结合的控制方式，选用高性能ARM处理器LPC2148、PWM波产生芯片TL494为系统的核心部件，由LPC2148作为主控芯片，由专门的芯片TL494产生PWM波，节约了处理器LPC2148的内部资源。由LPC2148接收太阳能电池阵列输出电压和电流、蓄电池输入电压和电流的采集信号，同时根据预先设定的算法，给定TL494目标电压值并产生PWM波通过IR2117驱动电路驱动充电主电路的MOSFET对蓄电池充电。此外，本装置采用三阶段充电方式，根据蓄电池的充电特性需要检测蓄电池的电压、充电电流来执行特定程序实现对蓄电池的恒流充电、恒压充电、浮充。本装置还有MPPT功能，进一步发挥光伏电池的功效。该装置能最大限度的利用太阳能，提高充电效率，延长蓄电池的使用寿命，功能强大。The solar charging control device adopts a combination of digital and analog control methods, and selects high-performance ARM processor LPC2148 and PWM wave generation chip TL494 as the core components of the system. LPC2148 is used as the main control chip, and the dedicated chip TL494 generates PWM waves. , saving the internal resources of the processor LPC2148. The LPC2148 receives the acquisition signals of the output voltage and current of the solar cell array and the input voltage and current of the battery, and at the same time, according to the preset algorithm, the target voltage value of the TL494 is given and a PWM wave is generated to drive the MOSFET of the charging main circuit to the battery through the IR2117 drive circuit Charge. In addition, this device adopts a three-stage charging method. According to the charging characteristics of the battery, it needs to detect the voltage and charging current of the battery to execute a specific program to realize constant current charging, constant voltage charging and floating charging of the battery. The device also has an MPPT function to further exert the efficacy of photovoltaic cells. The device can maximize the use of solar energy, improve charging efficiency, prolong the service life of the storage battery, and has powerful functions.
四、附图说明4. Description of drawings
图1为所述的太阳能充电控制装置的模块示意图。FIG. 1 is a block diagram of the solar charging control device.
图2为所述的辅助电源电路图。FIG. 2 is a circuit diagram of the auxiliary power supply.
图3为所述的信号调理电路图。FIG. 3 is a circuit diagram of the signal conditioning described above.
图4为所述的驱动电路图。FIG. 4 is a diagram of the drive circuit.
五、具体实施方式5. Specific implementation
下面结合附图对本实用新型作进一步的说明。Below in conjunction with accompanying drawing, the utility model is further described.
参见图1，本实用新型的太阳能充电控制装置，包括太阳能电池阵列、充电主电路、蓄电池、驱动电路、控制电路、PWM波产生电路、电流电压采集电路、辅助电源电路、电压跟随电路、信号调理电路、温度检测电路、键盘电路、显示电路、通讯电路。所述的太阳能电池阵列、充电主电路、蓄电池依次相连，所述的电流电压采集电路与充电主电路相连，所述的PWM波产生电路、电压跟随电路、信号调理电路、键盘电路、显示电路、通讯电路、温度检测电路分别与控制电路相连，所述的PWM波产生电路与驱动电路相连，所述的驱动电路与充电主电路相连，所述的辅助电源电路为各电路提供电源。Referring to Fig. 1, the solar charging control device of the present utility model includes a solar cell array, a charging main circuit, a storage battery, a drive circuit, a control circuit, a PWM wave generating circuit, a current and voltage acquisition circuit, an auxiliary power supply circuit, a voltage follower circuit, and a signal conditioning circuit circuit, temperature detection circuit, keyboard circuit, display circuit, communication circuit. The solar cell array, the charging main circuit, and the storage battery are connected in sequence, the current and voltage acquisition circuit is connected to the charging main circuit, the PWM wave generation circuit, the voltage follower circuit, the signal conditioning circuit, the keyboard circuit, the display circuit, The communication circuit and the temperature detection circuit are respectively connected to the control circuit, the PWM wave generating circuit is connected to the driving circuit, the driving circuit is connected to the charging main circuit, and the auxiliary power circuit provides power for each circuit.
高性能ARM处理器LPC2148作为主控芯片，对太阳能电池阵列输出电压信号和电流信号、蓄电池输入电压信号和电流信号、温度信号进行采集，根据预先设定的算法，通过电压跟随电路，给定TL494目标电压值，TL494产生PWM波，通过驱动芯片IR2117驱动充电主电路的MOSFET，控制充电主电路对蓄电池的充电。电流采集通过在充电主电路中串入小阻值电阻采集电流。电压采集通过分压电路采集电压。采集的电流通过信号调理电路处理，电压通过电压跟随电路处理后传送给LPC2148。显示电路采用Nokia5110，显示蓄电池充电阶段、太阳能电池阵列输出电压和电流、输入电压和电流等。通讯电路采用RS232上传系统的测量数据和工作状态。通过键盘电路的设置可以根据实际蓄电池的种类、容量更改相关程序的充电参数。As the main control chip, the high-performance ARM processor LPC2148 collects the output voltage signal and current signal of the solar cell array, the input voltage signal and current signal of the battery, and the temperature signal. According to the preset algorithm, through the voltage follower circuit, the TL494 The target voltage value, TL494 generates PWM wave, drives the MOSFET of the charging main circuit through the driver chip IR2117, and controls the charging of the battery by the charging main circuit. Current collection collects current by connecting small resistance resistors in series in the charging main circuit. The voltage acquisition collects the voltage through the voltage divider circuit. The collected current is processed by the signal conditioning circuit, and the voltage is processed by the voltage follower circuit and sent to LPC2148. The display circuit adopts Nokia5110 to display the charging stage of the battery, the output voltage and current of the solar cell array, the input voltage and current, etc. The communication circuit uses RS232 to upload the measurement data and working status of the system. The charging parameters of related programs can be changed according to the type and capacity of the actual storage battery through the setting of the keyboard circuit.
参见图2，所述的辅助电源电路可为其他电路提供稳定的+10V、-9V电源，主要构成：蓄电池的正极BAT连接二极管D6的正极，二极管D6的负极分别连接电感L1、LM2587的5号引脚和电解电容C6的正极，电感L1的另一端连接电解电容C5的负极、LM2587的4号引脚和二极管D3的负极，电解电容C5的正极连接二极管D7的正极、二极管D4的正极和电感L2，二极管D7的负极连接电解电容C7的正极、电解电容C8的正极、电阻R3和电阻R4，二极管D7负极处的电压就是+10V并引出为其他电路供电，所述电阻R3的另一端连接发光二极管D8的正极，所述电阻R4的另一端连接电阻R6和LM2587的2号引脚，所述二极管D3的正极连接电解电容C1的负极和二极管D4的负极，电解电容C1的正极连接二极管D1的负极和二极管D5的正极，二极管D1的正极连接PNP型三极管Q1的集电极、电阻R2和电解电容C2的负极，PNP型三极管Q1的发射极连接电阻R1和电解电容C3的负极，PNP型三极管Q1的发射极处的电压就是-9V并引出为其他电路供电，所述电阻R1的另一端连接发光二极管D2的负极，所述PNP型三极管Q1的基极连接电阻R2的另一端和电解电容C4的负极，所述LM2587的1号引脚连接电阻R5，电阻R5的另一端连接电容C9，所述电解电容C6的负极、电感L2的另一端、电解电容C7的负极、电解电容C8的负极、发光二极管D8的负极、电阻R6的另一端、二极管D5的负极、电解电容C2的正极、电解电容C3的正极、发光二极管D2的正极、电解电容C4的正极、电容C9的另一端、LM2587的3号引脚连接蓄电池的负极。Referring to Figure 2, the auxiliary power supply circuit described above can provide stable +10V and -9V power supplies for other circuits, and its main components are: the positive pole BAT of the battery is connected to the positive pole of the diode D6, and the negative pole of the diode D6 is respectively connected to the inductor L1 and No. 5 of the LM2587 pin and the positive pole of electrolytic capacitor C6, the other end of inductor L1 is connected to the negative pole of electrolytic capacitor C5, pin 4 of LM2587 and the negative pole of diode D3, the positive pole of electrolytic capacitor C5 is connected to the positive pole of diode D7, the positive pole of diode D4 and the inductor L2, the negative pole of diode D7 is connected to the positive pole of electrolytic capacitor C7, the positive pole of electrolytic capacitor C8, resistor R3 and resistor R4, the voltage at the negative pole of diode D7 is +10V and is drawn to supply power for other circuits, the other end of the resistor R3 is connected to light The anode of the diode D8, the other end of the resistor R4 is connected to the No. 2 pin of the resistor R6 and LM2587, the anode of the diode D3 is connected to the cathode of the electrolytic capacitor C1 and the cathode of the diode D4, and the anode of the electrolytic capacitor C1 is connected to the diode D1 The negative pole and the positive pole of the diode D5, the positive pole of the diode D1 is connected to the collector of the PNP transistor Q1, the resistor R2 and the negative pole of the electrolytic capacitor C2, the emitter of the PNP transistor Q1 is connected to the negative pole of the resistor R1 and the electrolytic capacitor C3, and the PNP transistor Q1 The voltage at the emitter of the transistor is -9V and is drawn to supply power to other circuits. The other end of the resistor R1 is connected to the cathode of the light-emitting diode D2, and the base of the PNP transistor Q1 is connected to the other end of the resistor R2 and the electrolytic capacitor C4. Negative pole, the No. 1 pin of the LM2587 is connected to the resistor R5, the other end of the resistor R5 is connected to the capacitor C9, the negative pole of the electrolytic capacitor C6, the other end of the inductor L2, the negative pole of the electrolytic capacitor C7, the negative pole of the electrolytic capacitor C8, and the light emitting diode The negative pole of the diode D8, the other end of the resistor R6, the negative pole of the diode D5, the positive pole of the electrolytic capacitor C2, the positive pole of the electrolytic capacitor C3, the positive pole of the light-emitting diode D2, the positive pole of the electrolytic capacitor C4, the other end of the capacitor C9, and the No. 3 of the LM2587 The pin is connected to the negative terminal of the battery.
参见图3，所述的信号调理电路的主要构成：电流采集电阻的电流流入端I+连接INA138的3号引脚，电流采集电阻的电流流出端I-连接INA138的4号引脚，INA138的5号引脚连接+10V电源，INA138的1号引脚连接电阻R7和电阻R8，电阻R8的另一端连接电容C10和OP07的3号引脚，OP07的7号引脚连接+10V电源，OP07的4号引脚连接-9V电源，OP07的1号引脚连接可变电阻R9的固定端，可变电阻R9的另一固定端连接OP07的8号引脚，可变电阻R9的滑动端连接+10V电源，所述OP07的6号引脚连接电阻R10和OP07的2号引脚，电阻R10的另一端连接稳压二极管D9的负极和控制电路LPC2148的AD模块，所述INA138的2号引脚、电阻R7的另一端、电容C10的另一端、稳压二极管D9的正极连接信号地。Referring to Fig. 3, the main composition of the signal conditioning circuit: the current inflow terminal I of the current acquisition resistor is connected to the No. 3 pin of the INA138, the current outflow terminal I of the current acquisition resistor is connected to the No. 4 pin of the INA138, and the No. 4 pin of the INA138 Pin 5 is connected to +10V power supply, pin 1 of INA138 is connected to resistor R7 and resistor R8, the other end of resistor R8 is connected to capacitor C10 and pin 3 of OP07, pin 7 of OP07 is connected to +10V power supply, OP07 The 4th pin of the OP07 is connected to the -9V power supply, the 1st pin of the OP07 is connected to the fixed end of the variable resistor R9, the other fixed end of the variable resistor R9 is connected to the 8th pin of the OP07, and the sliding end of the variable resistor R9 is connected to +10V power supply, the No. 6 pin of the OP07 is connected to the resistor R10 and the No. pin, the other end of the resistor R7, the other end of the capacitor C10, and the anode of the Zener diode D9 are connected to the signal ground.
参见图4，所述的驱动电路的主要构成：IR2117的1号引脚连接电容C11、二极管D10的正极和+10V电源，二极管D10的负极连接电容C12和IR2117的8号引脚，电容C12的另一端连接电阻R12、IR2117的6号引脚和充电主电路中MOSFET的漏极，电阻R12的另一端连接电阻R11和充电主电路中MOSFET的栅极，电阻R11的另一端连接IR2117的7号引脚，IR2117的2号引脚连接PWM波产生电路中TL494的给定电压端，所述电容C11的另一端、IR2117的3号引脚连接信号地。Referring to Fig. 4, the main components of the driving circuit are as follows: pin 1 of IR2117 is connected to capacitor C11, the anode of diode D10 and +10V power supply, the cathode of diode D10 is connected to capacitor C12 and pin 8 of IR2117, and the capacitor C12 is The other end is connected to resistor R12, pin 6 of IR2117 and the drain of MOSFET in the charging main circuit, the other end of resistor R12 is connected to resistor R11 and the gate of MOSFET in the charging main circuit, and the other end of resistor R11 is connected to pin 7 of IR2117 Pin No. 2 of IR2117 is connected to the given voltage terminal of TL494 in the PWM wave generating circuit, and the other end of the capacitor C11, No. 3 pin of IR2117 is connected to the signal ground.
以上所述，仅是本实用新型的优选实施例，相关工作人员可在不脱离本实用新型技术原理的前提下，进行简单的改进和变型，这些改进和变型也应视为本实用新型的保护范围。The above are only preferred embodiments of the present utility model, and relevant staff members can make simple improvements and modifications without departing from the technical principle of the present utility model, and these improvements and modifications should also be regarded as protection of the present utility model scope.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107103558A (en) * | 2017-05-12 | 2017-08-29 | 深圳市诚信诺科技有限公司 | Solar powered illumination charging system |
| 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 |
| CN113206525A (en) * | 2021-05-06 | 2021-08-03 | 秦佳电气有限公司 | Electric power energy storage control assembly |
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Cited By (3)
| 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 |
| CN107103558A (en) * | 2017-05-12 | 2017-08-29 | 深圳市诚信诺科技有限公司 | Solar powered illumination charging system |
| CN113206525A (en) * | 2021-05-06 | 2021-08-03 | 秦佳电气有限公司 | Electric power energy storage control assembly |
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