The large electric current photovoltaic controller of a kind of intelligence
Technical field
The utility model relates to photovoltaic controller technical field, and in particular, the utility model relates to the large electric current photovoltaic controller of a kind of intelligence.
Background technology
Photovoltaic industry development is at present swift and violent, and various new application emerge in an endless stream.Solar cell board main portion is semiconductor material, and photoelectric effect generation current occurs after solar light irradiation for it.The attribute and the limitation that have due to material and light, the electric current of its generation is also the curve with undulatory property, if generated electric current is directly filled with in accumulator or direct powering load, easily cause the damage of accumulator and load, seriously reduce their life-span.To utilize sun power in order changing, to need use photovoltaic controller to carry out electric energy conversion, photovoltaic controller is key and the core in photovoltaic application system, and its performance directly affects result of use and the serviceable life of whole system.The most basic function of photovoltaic controller is that accumulator is carried out management of charging and discharging, ensures that accumulator does not overcharge, Bu Guofang.
Although existing a large amount of photovoltaic controllers, in application, has also been made certain Based Intelligent Control etc. now, existing photovoltaic controller has the following disadvantages: the one, and existing photovoltaic controller versatility is poor, not comprehensive to different output adjustment, and application is inconvenient; The 2nd, existing photovoltaic controller, mainly for single accumulator, is not supported some novel batteries; The 3rd, the communication function of existing photovoltaic controller is simple, does not catch up with the needs of system composition; The 4th, existing low pressure 48V left and right photovoltaic controller electric current is smaller, seldom has and exceedes 60A's.
Summary of the invention
The purpose of this utility model is effectively to overcome the deficiency of above-mentioned technology, provide a kind of intelligence large electric current photovoltaic controller, this photovoltaic controller is applicable to multiple occasion, meets obstructed user's demand, and be not only suitable for traditional battery, be also applicable to new pattern environment protection battery.
The technical solution of the utility model is to realize like this, its improvements are: it comprises DSP control panel, power amplifier board, IO interface and holding circuit, described power amplifier board, IO interface and holding circuit are all electrically connected on described DSP control panel, described DSP control panel comprises DSP main control chip, power-supplying circuit, temperature sampling circuit, PWM output control circuit, clock main memory circuit and current-voltage sampling filtering circuit, described power-supplying circuit, temperature sampling circuit, PWM output control circuit, clock main memory circuit and current-voltage sampling filtering circuit are all electrically connected on DSP main control chip, and described PWM output control circuit is electrically connected in above-mentioned IO interface.
In above-mentioned structure, described power amplifier board is made up of driving circuit, magnetic core power inductance, power MOS pipe and heating radiator.
In above-mentioned structure, it also comprises a communication interface, and this communication interface is connected on described DSP control panel, and described DSP control panel also comprises a communicating circuit, and above-mentioned communication interface is electrically connected on communicating circuit.
In above-mentioned structure, described communication interface comprises RS485 communication interface, CAN communication interface, wireless WIFI interface and network interface.
In above-mentioned structure, it also comprises a display board, and this display board is connected on described DSP control panel, and described DSP control panel also comprises a display interface circuit, and above-mentioned display board is electrically connected on display interface circuit.
In above-mentioned structure, on described display board, be electrically connected with a display screen, this display screen is for showing the running status of the large electric current photovoltaic controller of described intelligence.
In above-mentioned structure, it also comprises a keypad, and this keypad is connected on described DSP control panel; Described DSP control panel also comprises a keystroke interface circuit, and above-mentioned keypad is electrically connected on keystroke interface circuit, and described keystroke interface circuit and display interface circuit are connected on DSP main control chip by same interface.
The beneficial effects of the utility model are: one, the utility model adopt totally digitilized control system, and user can change by panel button or communication modes the allocation plan of equipment, is applicable to multiple occasion, meets obstructed user's demand; The management of charging and discharging curve of two, the utility model is built-in lithium electricity and other polymer batteries, is not only suitable for traditional battery, is also applicable to new pattern environment protection battery; Three, the utlity model has abundant communication interface, configured RS485 communication interface and CAN communication interface, reserved wireless WIFI interface and extension of network mouth, can meet different occasions and use; Four, the charging current of controller maximum of the present utility model can reach 80A/48V, can utilizing high power occasion.
[brief description of the drawings]
Fig. 1 is theory diagram of the present utility model;
Fig. 2 is the theory diagram of DSP control panel of the present utility model.
[embodiment]
Below in conjunction with drawings and Examples, the utility model will be further described.
With reference to Fig. 1, shown in Fig. 2, the large electric current photovoltaic controller of one intelligence that the utility model discloses, this photovoltaic controller comprises DSP control panel 10, power amplifier board 20, IO interface 30 and holding circuit 40, and power amplifier board 20, IO interface 30 and holding circuit 40 are all electrically connected on DSP control panel, described DSP control panel 10 comprises DSP main control chip 101, power-supplying circuit 102, temperature sampling circuit 103, PWM output control circuit 104, clock main memory circuit 105 and current-voltage sampling filtering circuit 106, and power-supplying circuit 102, temperature sampling circuit 103, PWM output control circuit 104, clock main memory circuit 105 and current-voltage sampling filtering circuit 106 are all electrically connected on DSP main control chip 101, and described PWM output control circuit 104 is electrically connected in above-mentioned IO interface 30.Described power amplifier board 20 is made up of driving circuit, magnetic core power inductance, power MOS pipe and heating radiator, and wherein, magnetic core power inductance adopts the inductance of novel efficient, coordinates driving circuit and power power MOS pipe, is conducive to raise the efficiency, and increases power density.
Further, continue in conjunction with shown in Fig. 1, Fig. 2, this photovoltaic controller also comprises a communication interface 50, and this communication interface 50 is connected on described DSP control panel 10, described DSP control panel 10 also comprises a communicating circuit 106, and above-mentioned communication interface 50 is electrically connected on communicating circuit 106.Described communication interface 50 comprises RS485 communication interface, CAN communication interface, wireless WIFI interface and network interface.
Further, continue in conjunction with shown in Fig. 1, Fig. 2, this photovoltaic controller also comprises a display board 60, and this display board 60 is connected on described DSP control panel 10, described DSP control panel 10 also comprises a display interface circuit 107, and above-mentioned display board 60 is electrically connected on display interface circuit 107.On described display board 60, be electrically connected with a display screen 70, this display screen 70 is for showing the running status of the large electric current photovoltaic controller of described intelligence.In addition, it also comprises a keypad 80, and this keypad 80 is connected on described DSP control panel 10; Described DSP control panel 10 also comprises a keystroke interface circuit 108, and above-mentioned keypad 80 is electrically connected on keystroke interface circuit 108, and described keystroke interface circuit 108 is connected on DSP main control chip 101 by same interface with display interface circuit 107.
By above-mentioned circuit structure, photovoltaic controller of the present utility model is taking DSP control panel as core, by DSP control panel, the parameters such as battery tension, solar array voltage, discharge current, environment temperature are entered to gather, calculate by special control model, choose the discharge rate and the temperature compensation parameter that meet battery characteristics, realize high precision control, simultaneously, adopt the fuzzy charging modes of PWM of intelligent and high-efficiency to charge to accumulator, ensure that battery-operated is in optimum condition.In addition, the utility model, with keypad and display screen, can arrange operational mode and operational factor easily, and display screen can show current running status intuitively simultaneously.Also can receive outside control command by abundant communication interface, or the data of photovoltaic controller and state are transported on external unit.Based on this, the utility model is applicable to multiple occasion, meets obstructed user's demand; This photovoltaic controller has abundant communication interface, has configured RS485 communication and CAN communication, has reserved wireless WIFI interface and extension of network mouth, can meet different occasions and use.The charging current of this photovoltaic controller maximum can reach 80A/48V in addition, can utilizing high power occasion.
Described above is only preferred embodiment of the present utility model, and above-mentioned specific embodiment is not to restriction of the present utility model.In technological thought category of the present utility model, can there is various distortion and amendment, retouching that all those of ordinary skill in the art make according to above description, revise or be equal to replacement, all belong to the scope that the utility model is protected.