CN107240948B - Portable energy storage battery charging and discharging control method and system - Google Patents

Portable energy storage battery charging and discharging control method and system Download PDF

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Publication number
CN107240948B
CN107240948B CN201710665980.0A CN201710665980A CN107240948B CN 107240948 B CN107240948 B CN 107240948B CN 201710665980 A CN201710665980 A CN 201710665980A CN 107240948 B CN107240948 B CN 107240948B
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Prior art keywords
charging
voltage
battery
discharging
output
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CN107240948A (en
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黄汉坤
黄李冲
陈崇达
蔡奕南
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Dongguan Greenway New Energy Co ltd
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Dongguan Greenway New Energy Co ltd
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0047Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0063Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0068Battery or charger load switching, e.g. concurrent charging and load supply
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007Regulation of charging or discharging current or voltage

Abstract

The invention discloses a portable energy storage battery charging and discharging control method and a portable energy storage battery charging and discharging control system, wherein the method comprises the following steps: starting a portable energy storage battery charging and discharging control system, and selecting a working mode; and starting a charge and discharge protection program in a corresponding working mode. The invention can satisfy the working modes of various modes, protects the charge or discharge in various modes, and has 16.8V/3A quick charge control, PD quick charge protocol, 5V/4.8A output control, inverter 110V output control, charge and discharge over-temperature protection, charge and discharge over-current protection, charge over-voltage protection, discharge under-voltage protection, charge reverse connection protection, short-circuit protection, USB and inverter output state prompt function and automatic identification switching output function.

Description

Portable energy storage battery charging and discharging control method and system
Technical Field
The invention relates to the technical field of batteries, in particular to a portable energy storage battery charging and discharging control method and system.
Background
At present, for a portable battery, charge and discharge management is a key technology, in the prior art, the problem of unscientific charge and discharge management may affect the service life, battery capacity, service efficiency and the like of the battery, and how to scientifically manage charge and discharge of the battery is a technical problem that needs to be solved urgently by professional technicians in the field.
Disclosure of Invention
The embodiment of the invention aims to solve the technical problem that: the utility model provides a charge-discharge control method and system for portable energy storage battery, which solves the problems in the prior art.
According to an aspect of an embodiment of the present invention, a method for controlling charging and discharging of a portable energy storage battery is provided, including:
starting a charge and discharge control system of the portable energy storage battery, and selecting a working mode, wherein the working mode comprises the following steps: a 16.8V/3A charging control mode, a solar MPPT charging management control mode, a PD bidirectional fast charging management control mode, a USB automatic detection and output control mode and an inverter output control mode;
starting a charge and discharge protection program in a corresponding working mode, wherein the charge and discharge protection program comprises the following steps: the intelligent charging protection control system comprises an intelligent charging anti-protection control, an intelligent charging overvoltage protection control, an intelligent charging and discharging high-temperature protection control, an intelligent discharging overcurrent protection control, an intelligent discharging undervoltage protection control and an intelligent discharging overvoltage protection control.
In another embodiment of the above method for controlling charging and discharging of a portable energy storage battery, the 16.8V/3A charging control mode includes:
the system completes initialization and enters a 16.8V/3A charging control mode, and the system automatically identifies plug-in charging;
the system checks whether the charging voltage is normal;
if not, the charging voltage is abnormal, the charging is closed, the sleep is entered, and the abnormal charging voltage condition comprises: reverse insertion, low voltage connection and overvoltage protection connection;
if yes, the battery is charged, and the charging indicator light indicates the charging state;
detecting whether the charging current, the voltage and the temperature are normal, wherein the parameters of the charging current, the voltage and the temperature are normal as follows: normal current <3A, 5V < normal voltage <30V, normal temperature <55 ℃;
if not, starting a charging overvoltage, charging undervoltage, overtemperature and overcurrent protection program, displaying a charging abnormal state by a charging indicator lamp, closing charging and entering dormancy;
if yes, detecting whether the battery is charged completely, wherein the parameters of the battery after charging are as follows: 16.4V < battery voltage <16.8V, charging current <300 mA;
if yes, the charging indicator lamp displays the charging completion state, the charging is closed, and the sleep is started;
if not, continuing to charge until the charging parameters reach the battery charging completion parameters.
In another embodiment of the above method for controlling charging and discharging of a portable energy storage battery, the MPPT charging management control mode includes:
the system completes initialization and enters a solar MPPT charging management control mode, and the system automatically identifies plug-in charging;
the system automatically detects whether input voltage or input power exists;
if not, charging is abnormal, charging is closed, and the sleep is started, wherein the factors of the abnormal charging include: reverse plug-in, low voltage, overvoltage protection and insufficient solar power;
if yes, the battery is charged, and the charging indicator light indicates the charging state;
detecting whether the charging voltage, the charging current and the battery temperature are normal, wherein the parameters of the charging current, the charging current and the battery temperature are normal as follows: normal current <3A, 5V < normal voltage <30V, normal temperature <55 ℃;
if not, starting a charging overvoltage, charging undervoltage, overtemperature and overcurrent protection program, displaying a charging abnormal state by a charging indicator lamp, closing charging and entering dormancy;
if yes, detecting the magnitude of the charging power, and if the charging power is insufficient, reducing the charging current;
detecting whether the battery is charged completely, wherein the parameters of the battery after charging are as follows: 16.4V < battery voltage <16.8V, charging current <300 mA;
if yes, the charging indicator lamp displays the charging completion state, the charging is closed, and the sleep is started;
if not, continuing to charge until the charging parameters reach the battery charging completion parameters.
In another embodiment of the above method for controlling charging and discharging of a portable energy storage battery, the PD bidirectional fast charging management control mode includes:
the system completes initialization, enters a PD bidirectional fast charging management control mode, and judges whether a boost circuit and a PD protocol circuit are normal or not;
if not, stopping execution and returning;
if so, identifying a charging or discharging state of the circuit;
if the recognition system enters the charging state, detecting whether the external equipment is compatible with a PD quick charging protocol;
if yes, the system is charged in any mode of 5V/3A, 12V/2A, 20V/1.45A and 3-21V in a stepping mode by 20mV until the charging is finished;
if not, the system is charged in a 5V and maximum 2.4A mode until the charging is finished;
if the system is identified to enter the discharging state, detecting whether the external equipment is compatible with a PD rapid discharging protocol;
if yes, the system discharges in any mode of 5V/3A, 12V/2A, 20V/1.45A and 3-21V in a stepping mode of 20mV until discharging is finished, a low voltage alarm and an indicator lamp alarm enter sleep, and the parameters of discharging finishing are as follows: battery voltage < 12.5V;
if not, the system discharges in a 5V and maximum 2.4A mode until the discharge is finished, the low voltage alarm and the indicator lamp alarm enter the sleep mode, and the parameters after the discharge are as follows: battery voltage < 12.5V.
In another embodiment of the above method for controlling charging and discharging of a portable energy storage battery, the USB automatic detection and output control mode includes:
the system completes initialization and enters a USB automatic detection and output control mode;
after detecting the USB insertion, the system detects whether the USB insertion enabling signal is normal or not, the USB insertion enabling signal is I-load, if the USB insertion enabling signal is normal, the I-load signal is in a low level, and if the USB insertion enabling signal is abnormal, the I-load signal is in a high level;
if not, re-detecting;
if yes, 5V output is started, and the charge and discharge indicator lamp indicates the discharge state;
detecting parameters of 5V output current, battery temperature and battery voltage, and judging whether the USB output is normal;
if yes, continuing to output 5V;
if not, the output is closed, corresponding short circuit, overcurrent, over-temperature and low-voltage protection is started, the indicator lamp gives an alarm, and the device enters dormancy.
In another embodiment of the above method for controlling charging and discharging of a portable energy storage battery, the inverter output control mode includes:
the system completes initialization and enters an inverter output control mode;
the system judges whether the inverter is started, a signal of starting the inverter is INV _ EN, if the inverter is not started, the INV _ EN signal is high level, and if the inverter is started, the INV _ EN signal is low level;
if not, continuously detecting the inverter starting signal until the inverter starting signal is at a low level;
if yes, the output of the inverter is started, and the charging and discharging indicator lamp indicates the discharging state;
detecting the output current, the output voltage, the battery temperature and the battery voltage of the inverter, and judging whether the output of the inverter is normal or not;
if yes, continuing to output the inverter;
if not, the output is closed, corresponding short circuit, overcurrent, over-temperature and low-voltage protection is started, the indicator lamp gives an alarm, and the device enters dormancy.
Based on another aspect of the present invention, a portable energy storage battery charging and discharging control system is disclosed, comprising:
the master control MCU unit is used for detecting the charging and discharging over-temperature state, the charging and discharging over-current state, the charging over-voltage state, the discharging under-voltage state, the charging reverse connection state and the short-circuit state of each functional module of the charging and discharging control system, intelligently controlling the charging circuit, the USB output circuit, the buck-boost circuit, the inverter output circuit, the L ED electric quantity indicating circuit and the alarm circuit, and controlling the corresponding modules to work;
the charging current detection module is used for detecting the charging current condition and feeding back the charging current condition to the main control MCU unit;
the charging voltage detection module is used for detecting the charging voltage condition and feeding back the charging voltage condition to the main control MCU unit;
the temperature detection module is used for detecting the charging and discharging temperature conditions and feeding back to the main control MCU unit;
the USB discharging current detection module is used for detecting the current condition of USB discharging and feeding back the current condition to the main control MCU unit;
the inverter current detection module is used for detecting the current condition of the discharge of the inverter and feeding back the current condition to the main control MCU unit;
the battery voltage detection module is used for detecting the voltage condition of the battery and feeding the voltage condition back to the main control MCU unit;
the inverter voltage detection module is used for detecting the voltage condition of the inverter and feeding back the voltage condition to the main control MCU unit;
l ED electric quantity and L ED alarm module for controlling L ED electric quantity indication and alarm;
the MOS control module is used for detecting the MOS switch condition of the control output;
the charging circuit module comprises an adapter charging module, a solar charging module and a PD quick charging module, and converts external output into voltage and current suitable for charging the battery;
the USB discharging circuit module is used for reducing the voltage of the battery into 5V output;
and the inverter discharge circuit module is used for boosting the battery to 160V and converting the battery into 110V alternating current output, and the maximum 200W output is realized.
In another embodiment of the above portable energy storage battery charging and discharging control system according to the present invention, the main control MCU unit includes an HT66F2370 chip.
Compared with the prior art, the invention has the following advantages:
the invention provides a charge-discharge control method and a charge-discharge control system for a portable energy storage battery, which can meet the working modes of various modes, can protect charge or discharge in various modes, can realize the quick charge function by a Type-C port PD quick charge protocol or adapter and solar charge, is internally integrated with a 5V charge platform of mobile multimedia such as a pure sine wave AC inverter output module, a solar charge module, a mobile phone, a flat panel and the like, and is integrated with a common 110V commercial power supply platform such as a portable refrigerator, an outdoor searchlight and the like, and has the functions of 16.8V/3A quick charge control, PD quick charge protocol, 5V/4.8A output control, inverter 110V output control, charge-discharge over-temperature protection, charge-discharge over-current protection, charge over-voltage protection, discharge under-voltage protection, charge reverse connection protection, short-circuit protection, USB and inverter output state prompt, The invention has the advantages of automatic identification, output switching, convenient use and good management effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description will be given below of the drawings used in the description of the embodiments or the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a portable energy storage battery charging and discharging control system according to an embodiment of the present invention.
Fig. 2 is a flowchart of an embodiment of a portable energy storage battery charging and discharging control method according to the present invention.
Fig. 3 is a flowchart of another embodiment of the charge and discharge control method of the portable energy storage battery according to the present invention.
Fig. 4 is a flowchart of a portable energy storage battery charging/discharging control method according to another embodiment of the present invention.
Fig. 5 is a flowchart of a portable energy storage battery charging/discharging control method according to another embodiment of the present invention.
Fig. 6 is a flowchart of a portable energy storage battery charging/discharging control method according to another embodiment of the present invention.
Fig. 7 is a flowchart of a portable energy storage battery charging/discharging control method according to another embodiment of the present invention.
In the figure, a main control MCU unit 1, a charging current detection module 2, a charging voltage detection module 3, a temperature detection module 4, a USB discharging current detection module 5, an inverter current detection module 6, a battery voltage detection module 7, an inverter voltage detection module 8, a power and L ED alarm module 9L, a MOS control module 10, a charging circuit module 11, a USB discharging circuit module 12 and an inverter discharging circuit module 13.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The following describes a method and a system for controlling charging and discharging of a portable energy storage battery according to the present invention in more detail with reference to the accompanying drawings and embodiments.
Fig. 1 is a schematic structural diagram of an embodiment of a portable energy storage battery charging and discharging control method and system of the present invention, and as shown in fig. 1, the portable energy storage battery charging and discharging control system of the embodiment includes:
the intelligent charging and discharging control system comprises a main control MCU unit 1, wherein the main control MCU unit 1 is used for detecting the charging and discharging over-temperature state, the charging and discharging over-current state, the charging over-voltage state, the discharging under-voltage state, the charging reverse connection state and the short-circuit state of each functional module of the charging and discharging control system, intelligently controlling a charging circuit, a USB output circuit, a buck-boost circuit, an inverter output circuit, an L ED electric quantity indicating circuit and an alarm circuit, and controlling the corresponding modules to work;
the charging current detection module 2 is used for detecting the charging current condition and feeding back the charging current condition to the main control MCU unit 1;
the charging voltage detection module 3 is used for detecting the charging voltage condition and feeding back the charging voltage condition to the main control MCU unit 1;
the temperature detection module 4 is used for detecting the charging and discharging temperature conditions and feeding back the charging and discharging temperature conditions to the main control MCU unit 1;
the USB discharging current detection module 5 is used for detecting the current condition of USB discharging and feeding back the current condition to the main control MCU unit 1;
the inverter current detection module 6 is used for detecting the current condition of the discharge of the inverter and feeding back the current condition to the main control MCU unit 1;
the battery voltage detection module 7 is used for detecting the voltage condition of the battery and feeding the voltage condition back to the main control MCU unit 1;
the inverter voltage detection module 8 is used for detecting the voltage condition of the inverter and feeding back the voltage condition to the main control MCU unit 1;
l ED electric quantity and L ED alarm module 9 for controlling L ED electric quantity indication and alarm;
the MOS control module 10 is used for detecting the MOS switching condition of the control output;
the charging circuit module 11 comprises an adapter charging module, a solar charging module and a PD quick charging module, and converts external output into voltage and current suitable for charging the battery;
the USB discharge circuit module 12 is used for reducing the voltage of the battery into 5V output;
and the inverter discharge circuit module 13 is used for boosting the battery to 160V and converting the battery into 110V alternating current output, and the maximum 200W output is achieved.
The master MCU unit 1 comprises an HT66F2370 chip.
Fig. 2 is a flowchart of an embodiment of a portable energy storage battery charging and discharging control method according to the present invention, and as shown in fig. 2, the portable energy storage battery charging and discharging control method includes:
starting a charge and discharge control system of the portable energy storage battery and selecting a working mode, wherein the working mode comprises the following steps: a 16.8V/3A charging control mode, a solar MPPT charging management control mode, a PD bidirectional fast charging management control mode, a USB automatic detection and output control mode and an inverter output control mode;
200, starting a charge and discharge protection program in a corresponding working mode, wherein the charge and discharge protection program comprises: the intelligent charging protection control system comprises an intelligent charging anti-protection control, an intelligent charging overvoltage protection control, an intelligent charging and discharging high-temperature protection control, an intelligent discharging overcurrent protection control, an intelligent discharging undervoltage protection control and an intelligent discharging overvoltage protection control.
Fig. 3 is a flowchart of another embodiment of the charge/discharge control method of the portable energy storage battery according to the present invention, and as shown in fig. 3, the 16.8V/3A charge control mode includes:
101, the system completes initialization and enters a 16.8V/3A charging control mode, and the system automatically identifies plug-in charging;
102, the system checks whether the charging voltage is normal;
103, if not, the charging voltage is abnormal, the charging is closed, and the sleep is entered, wherein the abnormal charging voltage condition comprises: reverse insertion, low voltage connection and overvoltage protection connection;
104, if yes, the battery is charged, and a charging indicator light indicates the charging state;
105, detecting whether the charging current, the voltage and the temperature are normal, wherein the parameters of the charging current, the voltage and the temperature are normal as follows: normal current <3A, 5V < normal voltage <30V, normal temperature <55 ℃;
106, if not, starting a charging overvoltage, charging undervoltage, overtemperature and overcurrent protection program, displaying a charging abnormal state by a charging indicator lamp, closing charging and entering dormancy;
and 107, if yes, detecting whether the battery is charged completely, wherein the parameters of the battery charging completion are as follows: 16.4V < battery voltage <16.8V, charging current <300 mA;
108, if yes, the charging indicator lamp displays the charging completion state, the charging is closed, and the sleep is entered;
and 109, if not, continuing to charge until the charging parameter reaches the battery charging completion parameter.
Fig. 4 is a flowchart of a portable energy storage battery charging and discharging control method according to another embodiment of the present invention, and as shown in fig. 4, the solar MPPT charging management control mode includes:
201, the system completes initialization, enters a solar MPPT charging management control mode, and automatically identifies plug-in charging;
202, the system automatically detects whether input voltage or input power exists;
203, if not, charging is abnormal, charging is closed, and the sleep is entered, wherein the factors of the charging abnormality comprise: reverse plug-in, low voltage, overvoltage protection and insufficient solar power;
204, if yes, charging the battery, and indicating the charging state by a charging indicator light;
205, detecting whether the charging voltage, the charging current and the battery temperature are normal, wherein the parameters of the charging current, the charging current and the battery temperature are normal as follows: normal current <3A, 5V < normal voltage <30V, normal temperature <55 ℃;
206, if not, starting the charging overvoltage, charging undervoltage, overtemperature and overcurrent protection programs, displaying the abnormal charging state by a charging indicator lamp, closing the charging and entering the dormancy;
207, if yes, detecting the magnitude of the charging power, and if the charging power is insufficient, reducing the charging current;
208, detecting whether the battery is charged completely, wherein the parameters of the battery after charging are as follows: 16.4V < battery voltage <16.8V, charging current <300 mA;
209, if yes, the charging indicator light displays the charging completion state, the charging is closed, and the sleep is entered;
and 210, if not, continuing to charge until the charging parameters reach the battery charging completion parameters.
Fig. 5 is a flowchart of a portable energy storage battery charging and discharging control method according to another embodiment of the present invention, and as shown in fig. 5, the PD bidirectional fast charging management control mode includes:
301, the system completes initialization, enters a PD bidirectional fast charging management control mode, and judges whether a boost circuit and a PD protocol circuit are normal or not;
302, if not, stopping execution and returning;
303, if yes, identifying the charging or discharging state of the circuit;
304, if the system is identified to enter the charging state, detecting whether the external device is compatible with the PD fast charging protocol;
305, if yes, the system charges in any mode of 5V/3A, 12V/2A, 20V/1.45A and 3-21V in a stepping mode by 20mV until the charging is finished;
306, if not, the system is charged in a 5V and maximum 2.4A mode until the charging is finished;
307, if the system is identified to enter the discharging state, detecting whether the external equipment is compatible with the PD fast discharging protocol;
308, if yes, the system discharges in any mode of 5V/3A, 12V/2A, 20V/1.45A and 3-21V by stepping by 20mV until the discharge is finished, and then enters the sleep mode by a low voltage alarm and an indicator lamp alarm, wherein the parameters of the discharge completion are as follows: battery voltage < 12.5V;
309, if not, the system discharges in a 5V and maximum 2.4A mode until the discharge is finished and low, the voltage alarm and the indicator light alarm enter the dormancy, and the parameters after the discharge are as follows: battery voltage < 12.5V.
Fig. 6 is a flowchart of a portable energy storage battery charging/discharging control method according to another embodiment of the present invention, and as shown in fig. 6, the USB automatic detection and output control mode includes:
401, the system completes initialization and enters a USB automatic detection and output control mode;
402, after detecting the USB insertion, the system detects whether the USB insertion enabling signal is normal, the USB insertion enabling signal is I-load, if normal, the I-load signal is low level, if abnormal, the I-load signal is high level;
403, if not, re-detecting;
404, if yes, 5V output is started, and the charge and discharge indicator lamp indicates the discharge state;
405, detecting parameters of 5V output current, battery temperature and battery voltage, and judging whether the USB output is normal;
406, if yes, continuing to output 5V;
407, if not, the output is closed, corresponding short circuit, overcurrent, overtemperature and low voltage protection is started, the indicator light gives an alarm, and the device enters the sleep mode.
Fig. 7 is a flowchart of a portable energy storage battery charging and discharging control method according to another embodiment of the present invention, and as shown in fig. 7, the inverter output control mode includes:
501, the system completes initialization and enters an inverter output control mode;
502, the system judges whether the inverter is started, the signal of the inverter is INV _ EN, if not, the signal of the INV _ EN is high level, and if so, the signal of the INV _ EN is low level;
503, if not, continuing to detect the inverter starting signal until the inverter starting signal is at a low level;
504, if yes, the output of the inverter is started, and the charging and discharging indicator lamp indicates the discharging state;
505, detecting the output current, the output voltage, the battery temperature and the battery voltage of the inverter, and judging whether the output of the inverter is normal or not;
506, if yes, continuing to output the inverter;
507, if not, the output is closed, corresponding short circuit, overcurrent, overtemperature and low voltage protection is started, and the indicator light gives an alarm to enter dormancy.
The intelligent charging reverse protection control principle is as follows: after the software program starts to execute initialization, firstly, judging whether a reverse connection input signal exists or not, if so, stopping the circuit to work, returning to operation for reconfirming, and starting a charging circuit after the fault is relieved; when detecting that the external charging equipment is reversely connected, automatically closing the input, protecting the internal circuit and indicating a lamp to flash for prompting;
the intelligent charging overvoltage protection control principle is as follows: after the software program starts to execute initialization, firstly, judging whether the charging voltage exceeds a set protection value and a delay time value in the charging process, if so, closing a charging circuit to stop charging input, and recovering to start the input after the state is released; after the charging start is detected, the main control MCU unit 1 monitors the current and the voltage of the battery in real time, and when the battery is charged to 16.4-16.8V, the on-off state of the output MOSFET is controlled, so that potential safety hazards such as battery core bulging and the like caused by battery charging overvoltage are avoided;
the intelligent charge-discharge high-temperature protection control principle is as follows: after the software program starts to execute initialization, firstly, judging whether the temperature exceeds a set value in the charging and discharging process, if so, stopping the work of the input and output circuit, and recovering the work after the fault is removed; after the charging or discharging working temperature is detected to be higher than 55 ℃, the on-off state of the output MOSFET is controlled, and a lamp is indicated to flicker, and the charging or the output can be automatically recovered when the temperature is reduced to be lower than 45 ℃;
the intelligent discharging overcurrent protection control principle is as follows: after the software program starts to execute initialization, firstly judging whether the USB is in an output overcurrent set value, if so, stopping the work of the input and output circuit, and recovering the work after the fault is removed; after detecting that the USB and the discharge current of the inverter are larger than a set value, controlling the on-off state of the output MOSFET and indicating a lamp to flicker for prompting;
the intelligent discharging undervoltage protection control principle is as follows: after the software program starts to execute initialization, firstly, judging whether the battery voltage is in a low-voltage protection set value, if so, stopping the work of an output circuit, and recovering the work after the fault is removed; after the USB and the inverter are detected to be started and output, the voltage state of the battery is monitored in real time, and the on-off state of the output MOSFET is automatically controlled when the battery is discharged to 11.2-12V, so that the potential safety hazard of battery damage caused by over-low battery voltage is avoided;
the intelligent discharge overvoltage protection control principle is as follows: after the software program starts to execute initialization, firstly judging whether the AC output voltage exceeds a set value, if so, stopping the work of an output circuit, and recovering the work after the fault is removed; after the inverter is detected to be started and output, the output voltage of the inverter is monitored in real time, when the output voltage is higher than a set value, the on-off state of an output MOSFET is controlled, a lamp is indicated to flicker, and external potential safety hazards caused by overhigh voltage are avoided.
The portable energy storage battery charging and discharging control method and system provided by the invention are described in detail, specific examples are applied in the text to explain the principle and the implementation mode of the invention, and the description of the examples is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims (7)

1. A charge and discharge control method for a portable energy storage battery is characterized by comprising the following steps:
starting a charge and discharge control system of the portable energy storage battery, and selecting a working mode, wherein the working mode comprises the following steps: a 16.8V/3A charging control mode, a solar MPPT charging management control mode, a PD bidirectional fast charging management control mode, a USB automatic detection and output control mode and an inverter output control mode;
starting a charge and discharge protection program in a corresponding working mode, wherein the charge and discharge protection program comprises the following steps: the intelligent charging protection control system comprises an intelligent charging anti-protection control, an intelligent charging overvoltage protection control, an intelligent charging and discharging high-temperature protection control, an intelligent discharging overcurrent protection control, an intelligent discharging undervoltage protection control and an intelligent discharging overvoltage protection control;
the 16.8V/3A charging control mode comprises:
the system completes initialization and enters a 16.8V/3A charging control mode, and the system automatically identifies plug-in charging;
the system checks whether the charging voltage is normal;
if not, the charging voltage is abnormal, the charging is closed, the sleep is entered, and the abnormal charging voltage condition comprises: reverse insertion, low voltage connection and overvoltage protection connection;
if yes, the battery is charged, and the charging indicator light indicates the charging state;
detecting whether the charging current, the voltage and the temperature are normal, wherein the parameters of the charging current, the voltage and the temperature are normal as follows: normal current <3A, 5V < normal voltage <30V, normal temperature <55 ℃;
if not, starting a charging overvoltage, charging undervoltage, overtemperature and overcurrent protection program, displaying a charging abnormal state by a charging indicator lamp, closing charging and entering dormancy;
if yes, detecting whether the battery is charged completely, wherein the parameters of the battery after charging are as follows: 16.4V < battery voltage <16.8V, charging current <300 mA;
if yes, the charging indicator lamp displays the charging completion state, the charging is closed, and the sleep is started;
if not, continuing to charge until the charging parameters reach the battery charging completion parameters.
2. The charge and discharge control method for the portable energy storage battery according to claim 1, wherein the solar MPPT charge management control mode comprises:
the system completes initialization and enters a solar MPPT charging management control mode, and the system automatically identifies plug-in charging;
the system automatically detects whether input voltage or input power exists;
if not, charging is abnormal, charging is closed, and the sleep is started, wherein the factors of the abnormal charging include: reverse plug-in, low voltage, overvoltage protection and insufficient solar power;
if yes, the battery is charged, and the charging indicator light indicates the charging state;
detecting whether the charging voltage, the charging current and the battery temperature are normal, wherein the parameters of the charging current, the charging current and the battery temperature are normal as follows: normal current <3A, 5V < normal voltage <30V, normal temperature <55 ℃;
if not, starting a charging overvoltage, charging undervoltage, overtemperature and overcurrent protection program, displaying a charging abnormal state by a charging indicator lamp, closing charging and entering dormancy;
if yes, detecting the magnitude of the charging power, and if the charging power is insufficient, reducing the charging current;
detecting whether the battery is charged completely, wherein the parameters of the battery after charging are as follows: 16.4V < battery voltage <16.8V, charging current <300 mA;
if yes, the charging indicator lamp displays the charging completion state, the charging is closed, and the sleep is started;
if not, continuing to charge until the charging parameters reach the battery charging completion parameters.
3. The charge-discharge control method of a portable energy storage battery according to claim 1, wherein the PD bidirectional fast charge management control mode comprises:
the system completes initialization, enters a PD bidirectional fast charging management control mode, and judges whether a boost circuit and a PD protocol circuit are normal or not;
if not, stopping execution and returning;
if so, identifying a charging or discharging state of the circuit;
if the recognition system enters the charging state, detecting whether the external equipment is compatible with a PD quick charging protocol;
if yes, the system is charged in any mode of 5V/3A, 12V/2A, 20V/1.45A and 3-21V in a stepping mode by 20mV until the charging is finished;
if not, the system is charged in a 5V and maximum 2.4A mode until the charging is finished;
if the system is identified to enter the discharging state, detecting whether the external equipment is compatible with a PD rapid discharging protocol;
if yes, the system discharges in any mode of 5V/3A, 12V/2A, 20V/1.45A and 3-21V in a stepping mode of 20mV until discharging is finished, a low voltage alarm and an indicator lamp alarm enter sleep, and the parameters of discharging finishing are as follows: battery voltage < 12.5V;
if not, the system discharges in a 5V and maximum 2.4A mode until the discharge is finished, the low voltage alarm and the indicator lamp alarm enter the sleep mode, and the parameters after the discharge are as follows: battery voltage < 12.5V.
4. The method of claim 1, wherein the USB automatic detection and output control mode comprises:
the system completes initialization and enters a USB automatic detection and output control mode;
after detecting the USB insertion, the system detects whether the USB insertion enabling signal is normal or not, the USB insertion enabling signal is I-load, if the USB insertion enabling signal is normal, the I-load signal is in a low level, and if the USB insertion enabling signal is abnormal, the I-load signal is in a high level;
if not, re-detecting;
if yes, 5V output is started, and the charge and discharge indicator lamp indicates the discharge state;
detecting parameters of 5V output current, battery temperature and battery voltage, and judging whether the USB output is normal;
if yes, continuing to output 5V;
if not, the output is closed, corresponding short circuit, overcurrent, over-temperature and low-voltage protection is started, the indicator lamp gives an alarm, and the device enters dormancy.
5. The portable energy storage battery charging and discharging control method according to claim 1, wherein the inverter output control mode comprises:
the system completes initialization and enters an inverter output control mode;
the system judges whether the inverter is started, a signal of starting the inverter is INV _ EN, if the inverter is not started, the INV _ EN signal is high level, and if the inverter is started, the INV _ EN signal is low level;
if not, continuously detecting the inverter starting signal until the inverter starting signal is at a low level;
if yes, the output of the inverter is started, and the charging and discharging indicator lamp indicates the discharging state;
detecting the output current, the output voltage, the battery temperature and the battery voltage of the inverter, and judging whether the output of the inverter is normal or not;
if yes, continuing to output the inverter;
if not, the output is closed, corresponding short circuit, overcurrent, over-temperature and low-voltage protection is started, the indicator lamp gives an alarm, and the device enters dormancy.
6. A portable energy storage battery charge-discharge control system, comprising:
the master control MCU unit is used for detecting the charging and discharging over-temperature state, the charging and discharging over-current state, the charging over-voltage state, the discharging under-voltage state, the charging reverse connection state and the short-circuit state of each functional module of the charging and discharging control system, intelligently controlling the charging circuit, the USB output circuit, the buck-boost circuit, the inverter output circuit, the L ED electric quantity indicating circuit and the alarm circuit, and controlling the corresponding modules to work;
the charging current detection module is used for detecting the charging current condition and feeding back the charging current condition to the main control MCU unit;
the charging voltage detection module is used for detecting the charging voltage condition and feeding back the charging voltage condition to the main control MCU unit;
the temperature detection module is used for detecting the charging and discharging temperature conditions and feeding back to the main control MCU unit;
the USB discharging current detection module is used for detecting the current condition of USB discharging and feeding back the current condition to the main control MCU unit;
the inverter current detection module is used for detecting the current condition of the discharge of the inverter and feeding back the current condition to the main control MCU unit;
the battery voltage detection module is used for detecting the voltage condition of the battery and feeding the voltage condition back to the main control MCU unit;
the inverter voltage detection module is used for detecting the voltage condition of the inverter and feeding back the voltage condition to the main control MCU unit;
l ED electric quantity and L ED alarm module for controlling L ED electric quantity indication and alarm;
the MOS control module is used for detecting the MOS switch condition of the control output;
the charging circuit module comprises an adapter charging module, a solar charging module and a PD quick charging module, and converts external output into voltage and current suitable for charging the battery;
the USB discharging circuit module is used for reducing the voltage of the battery into 5V output;
and the inverter discharge circuit module is used for boosting the battery to 160V and converting the battery into 110V alternating current output, and the maximum 200W output is realized.
7. The portable energy storage battery charging and discharging control system of claim 6, wherein the main control MCU unit comprises an HT66F2370 chip.
CN201710665980.0A 2017-08-07 2017-08-07 Portable energy storage battery charging and discharging control method and system Active CN107240948B (en)

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