CN115276167A - Charging circuit controlled by digital control chip - Google Patents
Charging circuit controlled by digital control chip Download PDFInfo
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- CN115276167A CN115276167A CN202210930694.3A CN202210930694A CN115276167A CN 115276167 A CN115276167 A CN 115276167A CN 202210930694 A CN202210930694 A CN 202210930694A CN 115276167 A CN115276167 A CN 115276167A
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- Prior art keywords
- voltage
- battery
- adp32f035
- control chip
- digital control
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- 230000001960 triggered effect Effects 0.000 claims description 10
- 230000000295 complement effect Effects 0.000 claims description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00308—Overvoltage protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00309—Overheat or overtemperature protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J2207/10—Control circuit supply, e.g. means for supplying power to the control circuit
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a digital control chip control charging circuit, which relates to the field of voltage supply, and comprises: the digital control chip is used for outputting a PWM signal to control charging output; the battery input module is used for supplying 12V/24V voltage through a battery and outputting the voltage to the digital control chip; the solar energy input module is used for supplying 50V voltage through solar energy and outputting the voltage to the digital control chip; compared with the prior art, the invention has the beneficial effects that: the traditional main control chip STM32 is changed into a digital chip ADP32F035 to control charging, the hardware scheme is simplified, algorithm chips are reduced, algorithm logic is realized by the main control chip ADP32F035, and dynamic PWM waveform control charging logic is sent out; the cost is reduced, the scheme is simple and convenient to adjust, and the situation of element limitation is broken; two inputs, namely a 12V/24V battery system and a 50V solar system are supported, and the battery types can be flexibly configured.
Description
Technical Field
The invention relates to the field of voltage supply, in particular to a charging circuit controlled by a digital control chip.
Background
After the storage battery is discharged, the direct current flows through the storage battery in the direction opposite to the discharging current, so that the electric energy is converted into chemical energy in the storage battery and stored, and the working capacity of the storage battery is recovered.
Because the charger circuit is in an analog control mode, an algorithm chip is used for controlling the charging logic, the defects of high cost, limited component selection, over-trouble in hardware scheme adjustment and the like exist, and improvement is needed.
Disclosure of Invention
The present invention is directed to a charging circuit controlled by a digital control chip, so as to solve the problems mentioned in the background art.
In order to achieve the purpose, the invention provides the following technical scheme:
a digital control chip controlled charging circuit comprising:
the digital control chip is used for outputting a PWM signal to control charging output;
the battery input module is used for supplying 12V/24V voltage through a battery and outputting the voltage to the digital control chip;
the solar energy input module is used for supplying 50V voltage through solar energy and outputting the voltage to the digital control chip;
the output module is used for outputting constant voltage and current;
the forced start module is used for igniting forced start, and the digital control chip controls the output module to work;
the model of the digital control chip is ADP32F035, the battery input module is connected with pins 20 and 21 of the ADP32F035, the solar energy input module is connected with pins 19 and 21 of the ADP32F035, the forced start module is connected with pins 18 of the ADP32F035, and pins 53, 54, 55 and 56 of the ADP32F035 are connected with the output module.
As a still further scheme of the invention: the digital control chip comprises a control law accelerator.
As a still further scheme of the invention: the battery input module supplies 12V/24V voltage, when the 12V voltage is output, the high voltage warning is triggered when the battery input voltage is higher than 16.5V, the output is disconnected when the battery input voltage is lower than 13.2V, and the low voltage warning is triggered when the battery input voltage is lower than 12V; when the voltage of 24V is output, the battery input voltage is higher than 33V, a high voltage warning is triggered, when the battery input voltage is lower than 26.4V, the output is cut off, and when the battery input voltage is lower than 24V, a low voltage warning is triggered.
As a still further scheme of the invention: no. 14 pin of ADP32F035 detects battery temperature, detects battery temperature in real time, and provides charging compensation according to the battery temperature.
As a still further scheme of the invention: and a No. 15 pin of ADP32F035 detects the internal temperature of the digital control chip, detects the internal temperature in real time, and if the internal temperature is higher than 65 ℃, the fan is started to cool, and the fan is turned off after the internal temperature is lower than 55 ℃.
As a still further scheme of the invention: pin 25 and pin 26 of ADP32F035 are a receiving port and a transmitting port for CAN communication, respectively.
As a still further scheme of the invention: pin 32 and pin 27 of ADP32F035 are a UART communication receiving port and a UART communication transmitting port, respectively.
As a still further scheme of the invention: no. 38 pin and No. 39 pin of ADP32F035 are respectively a battery relay control input channel and a solar relay control input channel, when solar energy is charged preferentially, the solar relay is attracted, and the battery input is disconnected; when the battery is charged preferentially, the battery relay is closed, and the solar energy input is disconnected.
As a still further scheme of the invention: no. 53 pin, no. 54 pin, no. 55 pin and No. 56 pin of ADP32F035 are PWM signal output ports, wherein the PWM signals output by the No. 53 pin and the No. 54 pin are complementary, and the PWM signals output by the No. 55 pin and the No. 56 pin are complementary.
As a still further scheme of the invention: no. 63 pin and No. 64 pin of ADP32F035 are protection control pins, and when the circuit is in failure, the battery input module, the solar energy input module and the output module are disconnected in a timing mode.
Compared with the prior art, the invention has the beneficial effects that: the traditional main control chip STM32 is changed into a digital chip ADP32F035 to control charging, the hardware scheme is simplified, algorithm chips are reduced, algorithm logic is realized by the main control chip ADP32F035, and dynamic PWM waveform control charging logic is sent out; the cost is reduced, the scheme is simple and convenient to adjust, and the situation of element limitation is broken; two inputs, namely a 12V/24V battery system and a 50V solar system are supported, and the battery types can be flexibly configured.
Drawings
Fig. 1 is a schematic diagram of a charging circuit controlled by a digital control chip.
Fig. 2 is a pin diagram of the digital control chip.
Fig. 3 is a circuit diagram of an output module.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
Referring to fig. 1, a charging circuit controlled by a digital control chip includes:
the digital control chip is used for outputting a PWM signal to control charging output;
the battery input module is used for supplying 12V/24V voltage through a battery and outputting the voltage to the digital control chip;
the solar energy input module is used for supplying 50V voltage through solar energy and outputting the voltage to the digital control chip;
the output module is used for outputting constant voltage and current;
the forced start module is used for igniting forced start, and the digital control chip controls the output module to work;
the model of the digital control chip is ADP32F035, the battery input module is connected with pins 20 and 21 of the ADP32F035, the solar energy input module is connected with pins 19 and 21 of the ADP32F035, the forced start module is connected with pins 18 of the ADP32F035, and pins 53, 54, 55 and 56 of the ADP32F035 are connected with the output module.
In a specific embodiment: the specific program for realizing ADP32F035 control output is as follows:
position-based PID initialization:
wherein S _ OutVoltage is a voltage loop parameter, S _ PvVoltage solar loop parameter, and S _ OutCurrent is a current loop parameter.
Position formula PID calculates output: the software algorithm initializes parameters according to hardware characteristics, and then performs PID operation according to a target value and an actual output feedback value, and the actual hardware characteristics need to calculate related open-loop transfer functions and closed-loop curve characteristic adjustment parameters.
Referring to fig. 3, a specific circuit diagram of the output module, the output module receives the control of the output PWM signal from pins 53, 54, 55, and 56 of the ADP32F 035.
A depressurization zone: the digital PID algorithm calculates input, output and target values, controls the output duty ratio of PWM-1-H (pin 54) and PWM-1-L (pin 53), and controls the PWM-1-H to be switched on firstly and then after dead time when the PWM-1-L is switched off; at the moment, the PWM-2-H is always conducted, and the PWM-2-L is always disconnected, so that the voltage reduction treatment is completed.
A boosting area: the digital PID algorithm calculates input, output and target values, controls the output duty ratio of PWM-2-H (No. 56 pin) and PWM-2-L (No. 55 pin), the PWM-2-L is firstly closed and conducted, and then controls the PWM-2-H to be conducted after dead time when the PWM-2-L is disconnected; at the moment, the PWM-1-H is always conducted, and the PWM-1-L is always disconnected, so that the boosting treatment is completed.
Digital PID parameter control: the software switching frequency is designed to be 20khz according to hardware design, and the PWM loading value is 2500 according to chip characteristics. The setting of the switching frequency is determined by hardware parameters, and 20khz is calculated according to inductance and mos tube special effect.
In this embodiment: referring to fig. 2, the digital control chip includes a control law accelerator.
The Control Law Accelerator (CLA) can reduce the algorithm computation time.
In this embodiment: referring to fig. 2, the battery input module supplies 12V/24V voltage, when the battery input voltage is higher than 16.5V, a high voltage warning is triggered, when the battery input voltage is lower than 13.2V, the output is turned off, and when the battery input voltage is lower than 12V, a low voltage warning is triggered; when the voltage of 24V is output, the battery input voltage is higher than 33V, a high voltage warning is triggered, when the battery input voltage is lower than 26.4V, the output is cut off, and when the battery input voltage is lower than 24V, a low voltage warning is triggered.
And detecting the input voltage of the battery so as to complete high-low voltage warning protection.
In this embodiment: referring to fig. 2, pin 14 of adp32f035 detects the battery temperature, detects the battery temperature in real time, and provides charging compensation according to the battery temperature.
The charge compensation reduces errors caused by temperature.
In this embodiment: referring to fig. 2, pin 15 of adp32f035 detects the internal temperature of the digital control chip, detects the internal temperature in real time, and turns on the fan to cool if the internal temperature is higher than 65 degrees, and turns off the fan if the internal temperature is lower than 55 degrees.
By controlling whether the fan works or not, the temperature difference in the digital control chip is ensured to be small.
In this embodiment: referring to fig. 2, pin 25 and pin 26 of adp32f035 are a receiving port and a transmitting port of CAN communication, respectively.
And constructing CAN communication.
In this embodiment: referring to fig. 2, pin 32 and pin 27 of adp32f035 are a receiving port and a transmitting port of UART communication, respectively.
The UART is used for communicating with the display panel and outputting charging information to the display panel for display.
In this embodiment: referring to fig. 2, pin 38 and pin 39 of adp32f035 are a battery relay control input channel and a solar relay control input channel, respectively, and when solar energy is charged preferentially, the solar relay is attracted to disconnect the battery input; when the battery is charged preferentially, the battery relay is closed, and the solar energy input is disconnected.
The power supply supports two ways of power supply of battery and solar energy, when practical, can the preferential solar energy of selection preferentially supply power.
In this embodiment: referring to fig. 2, pin 53, pin 54, pin 55, and pin 56 of adp32f035 are PWM signal output ports, wherein the PWM signals output from pin 53 and pin 54 are complementary, and the PWM signals output from pin 55 and pin 56 are complementary.
And the two groups of complementary PWM signals are output to control the boosting or the voltage reduction of the output module.
In this embodiment: referring to fig. 2, pin 63 and pin 64 of adp32f035 are protection control pins, and when the circuit fails, the battery input module, the solar input module and the output module are turned off by timing.
And the protection control pin disconnects the battery input module, the solar input module and the output module when the input voltage of the battery input module or the solar input module is abnormal.
The working principle of the invention is as follows: the digital control chip outputs PWM signals to control charging output, the battery input module supplies 12V/24V voltage to the digital control chip through the battery, the solar input module supplies 50V voltage to the digital control chip through solar energy, the output module outputs constant voltage and current, the forced starting module ignites and is forced to start, and the digital control chip controls the output module to work.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. A digital control chip control charging circuit is characterized in that:
the digital control chip control charging circuit comprises:
the digital control chip is used for outputting a PWM signal to control charging output;
the battery input module is used for supplying 12V/24V voltage through a battery and outputting the voltage to the digital control chip;
the solar energy input module is used for supplying 50V voltage through solar energy and outputting the voltage to the digital control chip;
the output module is used for outputting constant voltage and current;
the forced start module is used for igniting forced start, and the digital control chip controls the output module to work;
the model of the digital control chip is ADP32F035, the battery input module is connected with pins 20 and 21 of the ADP32F035, the solar energy input module is connected with pins 19 and 21 of the ADP32F035, the forced start module is connected with pins 18 of the ADP32F035, and pins 53, 54, 55 and 56 of the ADP32F035 are connected with the output module.
2. The digitally controlled chip controlled charging circuit of claim 1, wherein the digitally controlled chip includes a control law accelerator.
3. The charge circuit controlled by the digital control chip according to claim 1 or 2, wherein the battery input module supplies 12V/24V, when the voltage of 12V is output, the battery input voltage is higher than 16.5V and triggers a high voltage alarm, when the voltage of 13.2V and is lower than 13.2V, the output is cut off, and when the voltage of 12V and is lower than 12V, the battery input module triggers a low voltage alarm; when the voltage of 24V is output, the battery input voltage is higher than 33V, a high voltage warning is triggered, when the battery input voltage is lower than 26.4V, the output is cut off, and when the battery input voltage is lower than 24V, a low voltage warning is triggered.
4. The DCC charging circuit of claim 1, wherein the 14 th pin of ADP32F035 detects the battery temperature, detects the battery temperature in real time, and provides charging compensation according to the battery temperature.
5. The CCC charging circuit of claim 1, wherein the ADP32F035 pin 15 detects the internal temperature of the CCC, detects the internal temperature in real time, and turns on the fan to lower the temperature if the internal temperature is higher than 65 degrees, and turns off the fan if the internal temperature is lower than 55 degrees.
6. The DCC charging circuit of claim 1, wherein the pins 25 and 26 of ADP32F035 are the receiving port and the transmitting port of CAN communication, respectively.
7. The digitally controlled chip controlled charging circuit of claim 1, wherein pin 32 and pin 27 of ADP32F035 are a receiving port and a transmitting port for UART communication, respectively.
8. The digital control chip controlled charging circuit according to claim 1, wherein the No. 38 pin and the No. 39 pin of ADP32F035 are respectively a battery relay control input channel and a solar relay control input channel, and when solar energy is charged preferentially, the solar relay is closed and the battery input is disconnected; when the battery is charged preferentially, the battery relay is closed, and the solar energy input is disconnected.
9. The digitally controlled chip-controlled charging circuit of claim 1, wherein pins 53, 54, 55 and 56 of the ADP32F035 are PWM signal output ports, wherein the PWM signals output from the pins 53 and 54 are complementary, and the PWM signals output from the pins 55 and 56 are complementary.
10. The digitally controlled chip controlled charging circuit of claim 1, wherein pins 63 and 64 of ADP32F035 are protection control pins, and when the circuit fails, the battery input module, the solar input module and the output module are turned off by timing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210930694.3A CN115276167A (en) | 2022-08-04 | 2022-08-04 | Charging circuit controlled by digital control chip |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210930694.3A CN115276167A (en) | 2022-08-04 | 2022-08-04 | Charging circuit controlled by digital control chip |
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| CN115276167A true CN115276167A (en) | 2022-11-01 |
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| CN202210930694.3A Pending CN115276167A (en) | 2022-08-04 | 2022-08-04 | Charging circuit controlled by digital control chip |
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| US5648759A (en) * | 1994-02-02 | 1997-07-15 | National Semiconductor Corporation | Failsafe voltage regulator with warning signal driver |
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| JP2013070546A (en) * | 2011-09-26 | 2013-04-18 | Nissan Motor Co Ltd | Charge control device |
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| US20140327410A1 (en) * | 2013-05-01 | 2014-11-06 | Apple Inc | Battery charger integrated circuit chip |
| CN207074881U (en) * | 2017-08-21 | 2018-03-06 | 深圳市港祥辉电子有限公司 | A kind of high power density charger based on digital integration chip G5237F |
-
2022
- 2022-08-04 CN CN202210930694.3A patent/CN115276167A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5648759A (en) * | 1994-02-02 | 1997-07-15 | National Semiconductor Corporation | Failsafe voltage regulator with warning signal driver |
| CN102638085A (en) * | 2011-05-31 | 2012-08-15 | 重庆瑞升康博电气有限公司 | Intelligent storage battery charging and management device for electric vehicles |
| JP2013070546A (en) * | 2011-09-26 | 2013-04-18 | Nissan Motor Co Ltd | Charge control device |
| US20140327410A1 (en) * | 2013-05-01 | 2014-11-06 | Apple Inc | Battery charger integrated circuit chip |
| CN103441566A (en) * | 2013-09-12 | 2013-12-11 | 重庆大学 | System and method for supplying power cooperatively by mains supply, photovoltaic cell and energy storage battery |
| CN207074881U (en) * | 2017-08-21 | 2018-03-06 | 深圳市港祥辉电子有限公司 | A kind of high power density charger based on digital integration chip G5237F |
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| Title |
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