CN107240948B - Portable energy storage battery charge and discharge control method and system - Google Patents

Abstract

The present invention discloses a portable energy storage battery charge and discharge control method and system, the method comprising: starting the portable energy storage battery charge and discharge control system, and selecting a working mode; starting the charge and discharge protection program in the corresponding working mode. It can meet the working mode of multiple modes and protect the charging or discharging in various modes, with 16.8V/3A fast charging control, PD fast charging 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 status prompt function, automatic identification and switching output function. The present invention is easy to use and has good management effect.

Description

Portable energy storage battery charge and discharge control method and system

technical field

The present invention relates to the technical field of batteries, in particular to a charging and discharging control method and system of a portable energy storage battery.

Background technique

At present, charging and discharging management is a key technology for portable batteries. In the existing technology, the problem of unscientific charging and discharging management may affect the service life, battery capacity, and use efficiency of the battery. How to scientifically manage the battery Charging and discharging is a technical problem that professionals and technicians in this field urgently need to solve.

SUMMARY OF THE INVENTION

A technical problem to be solved by the embodiments of the present invention is to provide a charging and discharging control method and system for a portable energy storage battery, so as to solve the problems existing in the prior art.

According to an aspect of the embodiments of the present invention, a charging and discharging control method of a portable energy storage battery is provided, including:

Start the portable energy storage battery charge and discharge control system, and select the working mode, the working modes include: 16.8V/3A charge control mode, solar MPPT charge management control mode, PD bidirectional fast charge management control mode, USB automatic detection and output control mode, inverter output control mode;

Start the charging and discharging protection program in the corresponding working mode. The charging and discharging protection program includes: intelligent charging reverse connection protection control, intelligent charging overvoltage protection control, intelligent charging and discharging high temperature protection control, intelligent discharging overcurrent protection control, intelligent discharging Undervoltage protection control, intelligent discharge overvoltage protection control.

In another embodiment based on the above-mentioned portable energy storage battery charging and discharging control method of the present invention, the 16.8V/3A charging control mode includes:

The system completes initialization and enters 16.8V/3A charging control mode, and the system automatically recognizes plug-in charging;

The system checks whether the charging voltage is normal;

If no, the charging voltage is abnormal, turn off the charging, and go to sleep. The abnormal charging voltage includes: reverse insertion, low voltage, and overvoltage protection;

If it is, the battery is charging, and the charging indicator light indicates the charging status;

Detect whether the charging current, voltage and temperature are normal. The parameters of the charging current, voltage and temperature being normal are: normal current <3A, 5V<normal voltage<30V, normal temperature<55℃;

If not, start the charging overvoltage, charging undervoltage, overtemperature, and overcurrent protection programs, the charging indicator will display the abnormal charging state, turn off the charging, and go to sleep;

If yes, check whether the battery is fully charged, and the parameters of the battery charging completion are: 16.4V<battery voltage<16.8V, charging current<300mA;

If it is, the charging indicator will show the charging completion status, turn off the charging, and go to sleep;

If not, continue charging until the charging parameter reaches the battery-charged parameter.

In another embodiment of the above-mentioned portable energy storage battery charge and discharge control method of the present invention, the solar MPPT charge management control mode includes:

The system completes initialization and enters the solar MPPT charging management control mode, and the system automatically recognizes plug-in charging;

The system automatically detects whether there is input voltage or input power;

If no, the charging is abnormal, the charging is turned off, and the charging is in hibernation. The factors of the abnormal charging include: reverse insertion, low voltage connection, connection overvoltage protection, and insufficient solar power;

If it is, the battery is charging, and the charging indicator light indicates the charging status;

Detect whether the charging voltage, charging current and battery temperature are normal. The parameters of the charging current, voltage and temperature being normal are: normal current <3A, 5V<normal voltage<30V, normal temperature<55℃;

If not, start the charging overvoltage, charging undervoltage, overtemperature, and overcurrent protection programs, the charging indicator will display the abnormal charging state, turn off the charging, and go to sleep;

If yes, detect the size of the charging power, and if the charging power is insufficient, reduce the charging current;

Detect whether the battery is fully charged, the parameters of the battery charging completion are: 16.4V<battery voltage<16.8V, charging current<300mA;

If it is, the charging indicator will show the charging completion status, turn off the charging, and go to sleep;

If not, continue charging until the charging parameter reaches the battery-charged parameter.

In another embodiment based on the above-mentioned portable energy storage battery charge and discharge control method of the present invention, the PD bidirectional fast charge management control mode includes:

The system completes initialization and enters the PD bidirectional fast charging management control mode to determine whether the buck-boost circuit and the PD protocol circuit are normal;

If no, stop execution and return;

If so, identify the charging or discharging state of the circuit;

If the identification system enters the charging state, it is detected whether the external device is compatible with the PD fast charging protocol;

If it is, the system will charge in any mode of 5V/3A, 12V/2A, 20V/1.45A, 3-21V, step by 20mV, until the charging is completed;

If no, the system charges in 5V, max 2.4A mode until charging is complete;

If the identification system enters the discharge state, check whether the external device is compatible with the PD fast discharge protocol;

If it is, the system discharges in any mode of 5V/3A, 12V/2A, 20V/1.45A, 3-21V, step by 20mV, until the discharge is completed, low voltage alarm, indicator light alarm, enter sleep, the discharge The completed parameters are: battery voltage <12.5V;

If not, the system discharges in 5V, maximum 2.4A mode, until the discharge is completed with low voltage alarm, indicator light alarm, and goes to sleep. The parameters of the discharge completion are: battery voltage <12.5V.

In another embodiment of the above-mentioned portable energy storage battery charging and discharging control method according to the present invention, the USB automatic detection and output control mode includes:

The system completes initialization and enters USB automatic detection and output control mode;

After the system detects that the USB is inserted, it detects whether the USB insertion enable signal is normal. The USB insertion enable signal is I-load. If it is normal, the I-load signal is low. If it is not normal, the I-load signal is high. level;

If not, recheck;

If it is, turn on the 5V output, and the charge and discharge indicator light indicates the discharge state;

Detect the parameters of 5V output current, battery temperature and battery voltage, and judge whether the USB output is normal;

If yes, continue with 5V output;

If not, turn off the output, turn on the corresponding short-circuit, over-current, over-temperature, and low-voltage protections, the indicator lights give an alarm, and go to sleep.

In another embodiment of the above-mentioned portable energy storage battery charging/discharging control method based on the present invention, the inverter output control mode includes:

The system completes initialization and enters the inverter output control mode;

The system judges whether the inverter is turned on, the signal that the inverter is turned on is INV_EN, if it is not turned on, the INV_EN signal is high level, if it is turned on, the INV_EN signal is low level;

If not, continue to detect the inverter open signal until the inverter open signal is low level;

If it is, turn on the inverter output, and the charge and discharge indicator light indicates the discharge state;

Detect the inverter output current, output voltage, battery temperature, battery voltage, and judge whether the inverter output is normal;

If yes, proceed to inverter output;

If not, turn off the output, turn on the corresponding short-circuit, over-current, over-temperature, and low-voltage protections, the indicator lights give an alarm, and go to sleep.

Based on another aspect of the present invention, a portable energy storage battery charge and discharge control system is disclosed, comprising:

The main control MCU unit, which is used to detect the charging and discharging overtemperature state, charging and discharging overcurrent state, charging overvoltage state, discharging undervoltage state, charging reverse connection state and short circuit of each functional module of the charging and discharging control system Status, and intelligently control charging circuit, USB output circuit, buck-boost circuit, inverter output circuit, LED power indicator circuit, alarm circuit, and control the work of corresponding modules;

The charging current detection module is used to detect the charging current and feed it back to the main control MCU unit;

The charging voltage detection module is used to detect the charging voltage and feed it back to the main control MCU unit;

The temperature detection module is used to detect the temperature of charging and discharging, and feed it back to the main control MCU unit;

The USB discharge current detection module is used to detect the current condition of USB discharge and feed it back to the main control MCU unit;

The inverter current detection module is used to detect the current condition of the inverter discharge and feed it back to the main control MCU unit;

The battery voltage detection module is used to detect the voltage of the battery and feed it back to the main control MCU unit;

The inverter voltage detection module is used to detect the voltage of the inverter and feed it back to the main control MCU unit;

LED power and LED alarm module, used to control LED power indicator and alarm;

The MOS control module is used to detect the MOS switch condition of the control output;

Charging circuit module, including adapter charging module, solar charging module, PD fast charging module, converts external output into voltage and current suitable for battery charging;

USB discharge circuit module, used to step down the battery to 5V output;

The inverter discharge circuit module is used to boost the battery to 160V and convert it to 110V AC output, with a maximum output of 200W.

In another embodiment of the above-mentioned portable energy storage battery charging and discharging control system based on the present invention, the main control MCU unit includes a HT66F2370 chip.

Compared with the prior art, the present invention includes the following advantages:

The invention provides a charging and discharging control method and system for a portable energy storage battery, which can meet the working modes of various modes, and protect charging or discharging in various modes. Adapter and solar charging to achieve fast charging function, and also integrates pure sine wave AC inverter output module, solar charging module, 5V charging platform for mobile multimedia such as mobile phones and tablets, and commonly used 110V mains power supply such as portable refrigerators and outdoor searchlights. Platform in one, with 16.8V/3A fast charge control, PD fast charge protocol, 5V/4.8A output control, inverter 110V output control, charge and discharge overtemperature protection, charge and discharge overcurrent protection, charge overvoltage protection, discharge Undervoltage protection, charging reverse connection protection, short-circuit protection, USB and inverter output status prompt function, automatic identification switching output function, the invention is convenient to use and has good management effect.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following will briefly introduce the drawings used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are For some embodiments of the present invention, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of an embodiment of a charging and discharging control system for a portable energy storage battery of the present invention.

FIG. 2 is a flow chart of an embodiment of a charging and discharging control method for a portable energy storage battery of the present invention.

FIG. 3 is a flow chart of another embodiment of the charging and discharging control method of the portable energy storage battery of the present invention.

FIG. 4 is a flow chart of yet another embodiment of the charging and discharging control method for a portable energy storage battery of the present invention.

FIG. 5 is a flow chart of another embodiment of the method for controlling the charging and discharging of a portable energy storage battery according to the present invention.

FIG. 6 is a flow chart of yet another embodiment of a method for controlling charge and discharge of a portable energy storage battery of the present invention.

FIG. 7 is a flowchart of another embodiment of the method for controlling the charging and discharging of a portable energy storage battery of the present invention.

In the figure: 1 main control MCU unit, 2 charging current detection module, 3 charging voltage detection module, 4 temperature detection module, 5USB discharge current detection module, 6 inverter current detection module, 7 battery voltage detection module, 8 inverter Voltage detection module, 9 LED power and LED alarm module, 10 MOS control module, 11 charging circuit module, 12 USB discharge circuit module, 13 Inverter discharge circuit module.

Detailed ways

In order to make the purposes, 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 accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The method and system for controlling the charging and discharging of a portable energy storage battery provided by the present invention will be described in more detail below with reference to the accompanying drawings and embodiments.

FIG. 1 is a schematic structural diagram of an embodiment of the portable energy storage battery charge and discharge control method and system of the present invention. As shown in FIG. 1 , the portable energy storage battery charge and discharge control system of this embodiment includes:

The main control MCU unit 1 is used to detect the charging and discharging overtemperature state, charging and discharging overcurrent state, charging overvoltage state, discharging undervoltage state, and charging reverse connection state of each functional module of the charging and discharging control system , short-circuit state, and intelligently control the charging circuit, USB output circuit, buck-boost circuit, inverter output circuit, LED power indicator circuit, alarm circuit, and control the work of the corresponding modules;

The charging current detection module 2 is used to detect the charging current and feed it back to the main control MCU unit 1;

The charging voltage detection module 3 is used to detect the charging voltage and feed it back to the main control MCU unit 1;

The temperature detection module 4 is used to detect the temperature of charging and discharging, and feed it back to the main control MCU unit 1;

The USB discharge current detection module 5 is used to detect the current condition of the USB discharge and feed it back to the main control MCU unit 1;

The inverter current detection module 6 is used to detect the current condition of the inverter discharge, and feed it back to the main control MCU unit 1;

The battery voltage detection module 7 is used to detect the voltage of the battery and feed it back to the main control MCU unit 1;

The inverter voltage detection module 8 is used to detect the voltage condition of the inverter and feed it back to the main control MCU unit 1;

LED power and LED alarm module 9, used to control LED power indicator and alarm;

The MOS control module 10 is used to detect the MOS switch condition of the control output;

The charging circuit module 11, including an adapter charging module, a solar charging module, and a PD fast charging module, converts the external output into a voltage and current suitable for battery charging;

The USB discharge circuit module 12 is used to step down the battery to 5V output;

The inverter discharge circuit module 13 is used to boost the battery to 160V and convert it to 110V AC output with a maximum output of 200W.

The main control MCU unit 1 includes the HT66F2370 chip.

Fig. 2 is a flowchart of an embodiment of a method for controlling charge and discharge of a portable energy storage battery of the present invention. As shown in Fig. 2, the method for controlling charge and discharge of a portable energy storage battery includes:

100. Start the portable energy storage battery charge and discharge control system, and select a working mode, the working modes include: 16.8V/3A charge control mode, solar MPPT charge management control mode, PD bidirectional fast charge management control mode, USB automatic detection and Output control mode, inverter output control mode;

200. Start a charge and discharge protection program in a corresponding working mode, where the charge and discharge protection program includes: intelligent charging reverse connection protection control, intelligent charging overvoltage protection control, intelligent charging and discharging high temperature protection control, intelligent discharge overcurrent protection control, Intelligent discharge undervoltage protection control, intelligent discharge overvoltage protection control.

Fig. 3 is a flowchart of another embodiment of the charging and discharging control method for a portable energy storage battery of the present invention. As shown in Fig. 3, the 16.8V/3A charging control mode includes:

101. The system completes initialization and enters the 16.8V/3A charging control mode, and the system automatically recognizes plug-in charging;

102, the system checks whether the charging voltage is normal;

103. If no, the charging voltage is abnormal, the charging is turned off, and the battery is in hibernation. The abnormal charging voltage includes: reversed insertion, low voltage, and overvoltage protection;

104. If yes, the battery is charged, and the charging indicator light indicates the charging state;

105. Detect whether the charging current, voltage, and temperature are normal. The parameters of the charging current, voltage, and temperature being normal are: normal current <3A, 5V<normal voltage<30V, and normal temperature<55°C;

106. If not, start the charging overvoltage, charging undervoltage, overtemperature, and overcurrent protection programs, the charging indicator light shows the abnormal charging state, turn off the charging, and enter into hibernation;

107. If yes, detect whether the battery is fully charged, and the parameters of the battery charging completion are: 16.4V<battery voltage<16.8V, charging current<300mA;

108, if it is, the charging indicator shows the charging completion status, turn off the charging, and go to sleep;

109. If no, continue charging until the charging parameter reaches the battery charging completion parameter.

Fig. 4 is a flow chart of another embodiment of the charging and discharging control method of the portable energy storage battery of the present invention. As shown in Fig. 4 , the solar MPPT charging management control mode includes:

201, the system completes initialization and enters the solar MPPT charging management control mode, and the system automatically recognizes plug-in charging;

202, the system automatically detects whether there is input voltage or input power;

203. If no, the charging is abnormal, the charging is turned off, and the charging is entered into hibernation. The factors of the abnormal charging include: reversed insertion, low voltage connection, connection overvoltage protection, and insufficient solar power;

204, if so, the battery is charged, and the charging indicator light indicates the charging state;

205. Detect whether the charging voltage, charging current, and battery temperature are normal. The parameters of the charging current, voltage, and temperature being normal are: normal current<3A, 5V<normal voltage<30V, and normal temperature<55°C;

206, if not, start the charging overvoltage, charging undervoltage, overtemperature, and overcurrent protection programs, the charging indicator light shows the abnormal charging state, turn off the charging, and go to sleep;

207. If yes, detect the size of the charging power, and if the charging power is insufficient, reduce the charging current;

208. Detect whether the battery is fully charged, and the parameters of the battery charging completion are: 16.4V<battery voltage<16.8V, charging current<300mA;

209, if it is, the charging indicator shows the charging completion status, turn off the charging, and go to sleep;

210. If no, continue charging until the charging parameter reaches the battery charging completion parameter.

FIG. 5 is a flowchart of another embodiment of the charging and discharging control method for a portable energy storage battery of the present invention. As shown in FIG. 5 , the PD bidirectional fast charging management control mode includes:

301, the system completes initialization, and enters the PD bidirectional fast charging management control mode to determine whether the buck-boost circuit and the PD protocol circuit are normal;

302, if no, stop execution and return;

303, if yes, identify the charging or discharging state of the circuit;

304, if the identification system enters the charging state, detect whether the external device is compatible with the PD fast charging protocol;

305, if it is, the system will charge in any mode of 5V/3A, 12V/2A, 20V/1.45A, 3-21V, step by 20mV, until the charging is completed;

306, if no, the system is charged in 5V, maximum 2.4A mode until charging is completed;

307, if the identification system enters the discharge state, detect whether the external device is compatible with the PD fast discharge protocol;

308, if it is, the system discharges in any mode of 5V/3A, 12V/2A, 20V/1.45A, 3-21V, step by 20mV, until the discharge is completed, low voltage alarm, indicator light alarm, enter sleep, so The parameters after the discharge is completed are: battery voltage <12.5V;

309 , if not, the system discharges in a 5V, maximum 2.4A mode, until the discharge is completed, the voltage is low, the voltage alarms, the indicator light alarms, and the system enters hibernation. The parameters for the discharge completion are: battery voltage <12.5V.

FIG. 6 is a flowchart of another embodiment of the charging and discharging control method for a portable energy storage battery of the present invention. As shown in FIG. 6 , the USB automatic detection and output control mode includes:

401, the system completes initialization, and enters the USB automatic detection and output control mode;

402. After the system detects that the USB is inserted, it detects whether the USB insertion enable signal is normal. The USB insertion enable signal is I-load. If it is normal, the I-load signal is at a low level. If it is not normal, the I-load signal is at a low level. is high level;

403, if no, re-detect;

404, if yes, turn on the 5V output, and the charge and discharge indicator light indicates the discharge state;

405, detect the parameters of 5V output current, battery temperature, and battery voltage, and judge whether the USB output is normal;

406, if yes, continue to 5V output;

407 , if no, turn off the output, turn on the corresponding short circuit, overcurrent, overtemperature, and low voltage protections, the indicator lights give an alarm, and the device goes to sleep.

FIG. 7 is a flowchart of another embodiment of the method for controlling the charging and discharging of a portable energy storage battery according to the present invention. As shown in FIG. 7 , the inverter output control mode includes:

501, the system completes initialization and enters the inverter output control mode;

502, the system judges whether the inverter is turned on, the signal for turning on the inverter is INV_EN, if it is not turned on, the INV_EN signal is at a high level, and if it is turned on, the INV_EN signal is at a low level;

503. If no, continue to detect the inverter start signal until the inverter start signal is at a low level;

504, if yes, turn on the inverter output, and the charge and discharge indicator light indicates the discharge state;

505: Detect the inverter output current, output voltage, battery temperature, and battery voltage, and determine whether the inverter output is normal;

506, if yes, continue to inverter output;

507 , if not, turn off the output, turn on the corresponding short-circuit, over-current, over-temperature, and low-voltage protections, the indicator lights give an alarm, and go to sleep.

The intelligent charging reverse connection protection control principle is: after the software program starts to perform initialization, it first determines whether there is a reverse connection input signal, if so, stops the circuit operation, returns to the operation for re-confirmation, and turns on the charging circuit after the fault is removed; When the charging device is reversely connected, the input will be automatically turned off to protect the internal circuit, and the indicator light will flash to remind;

The intelligent charging overvoltage protection control principle is: after the software program starts to perform initialization, it first determines whether the charging voltage exceeds the set protection value and the delay time value during the charging process. Input; after detecting that the charging is turned on, the main control MCU unit 1 monitors the battery current and voltage in real time, and when the battery is charged to 16.4-16.8V, it controls the switching state of the output MOSFET to avoid safety hazards such as battery cell bulging due to battery charging overvoltage. ;

The intelligent charging and discharging high temperature protection control principle is: after the software program starts to perform initialization, it first determines whether the temperature exceeds the set value during the charging and discharging process, if so, the input and output circuit stops working, and resumes work after the fault is removed; the charging or discharging operating temperature is detected. After the temperature is higher than 55°C, the on-off state of the output MOSFET is controlled, and the indicator light flashes to indicate that the charging or output can be automatically resumed when the temperature drops below 45°C;

The intelligent discharge overcurrent protection control principle is: after the software program starts to perform initialization, it first determines whether the USB is in the output overcurrent setting value, if so, stops the input and output circuit work, and resumes work after the fault is removed; USB, inverter discharge is detected When the current is greater than the set value, the on-off state of the output MOSFET is controlled, and the indicator light flashes to indicate;

The control principle of intelligent discharge under-voltage protection is: after the software program starts to perform initialization, it first determines whether the battery voltage is at the low-voltage protection setting value, if so, the output circuit stops working, and resumes work after the fault is removed; it detects that the USB and inverter are turned on After the output, the battery voltage status is monitored in real time, and the switching status of the output MOSFET is automatically controlled when the battery is discharged to 11.2-12V, so as to avoid the safety hazard of battery damage caused by the battery voltage being too low;

The control principle of intelligent discharge overvoltage protection is as follows: after the software program starts to perform initialization, it first determines whether the AC output voltage exceeds the set value, if so, stops the output circuit and resumes work after the fault is removed; after detecting that the inverter turns on the output, real-time Monitor the output voltage of the inverter, when it is higher than the set value, control the switching state of the output MOSFET, and the indicator light will flash to remind, to avoid external safety hazards caused by excessive voltage.

The method and system for controlling the charging and discharging of a portable energy storage battery provided by the present invention have been described in detail above. In this paper, specific examples are used to illustrate the principles and implementations of the present invention. The descriptions of the above examples are only used to help Understand the method of the present invention and its core idea; at the same time, for those skilled in the art, according to the idea of the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification does not It should be understood as a limitation of the present invention.

Finally, it should be noted that the above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the The technical solutions recorded in the foregoing embodiments can be modified, or some technical features thereof can be equivalently replaced, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included. within the protection scope of the present invention.

Claims (7)

1. a portable energy storage battery charge and discharge control method, is characterized in that, comprises: Start the portable energy storage battery charge and discharge control system, and select the working mode, the working modes include: 16.8V/3A charge control mode, solar MPPT charge management control mode, PD bidirectional fast charge management control mode, USB automatic detection and output control mode, inverter output control mode; The charging and discharging protection program is started in the corresponding working mode, and the charging and discharging protection program includes: intelligent charging reverse connection protection control, intelligent charging overvoltage protection control, intelligent charging and discharging high temperature protection control, intelligent discharging overcurrent protection control, intelligent discharging Undervoltage protection control, intelligent discharge overvoltage protection control; The 16.8V/3A charging control mode includes: The system completes initialization and enters 16.8V/3A charging control mode, and the system automatically recognizes plug-in charging; The system checks whether the charging voltage is normal; If no, the charging voltage is abnormal, turn off the charging, and go to sleep. The abnormal charging voltage includes: reverse insertion, low voltage, and overvoltage protection; If it is, the battery is charging, and the charging indicator light indicates the charging status; Detect whether the charging current, voltage and temperature are normal. The parameters of the charging current, voltage and temperature being normal are: normal current <3A, 5V<normal voltage<30V, normal temperature<55℃; If not, start the charging overvoltage, charging undervoltage, overtemperature, and overcurrent protection programs, the charging indicator will display the abnormal charging state, turn off the charging, and go to sleep; If yes, check whether the battery is fully charged, and the parameters of the battery charging completion are: 16.4V<battery voltage<16.8V, charging current<300mA; If it is, the charging indicator will show the charging completion status, turn off the charging, and go to sleep; If not, continue charging until the charging parameter reaches the battery-charged parameter. 2. The charging and discharging control method of a portable energy storage battery according to claim 1, wherein the solar MPPT charging management control mode comprises: The system completes initialization and enters the solar MPPT charging management control mode, and the system automatically recognizes plug-in charging; The system automatically detects whether there is input voltage or input power; If no, the charging is abnormal, the charging is turned off, and the charging is in hibernation. The factors of the abnormal charging include: reverse insertion, low voltage connection, connection overvoltage protection, and insufficient solar power; If it is, the battery is charging, and the charging indicator light indicates the charging status; Detect whether the charging voltage, charging current and battery temperature are normal. The parameters of the charging current, voltage and temperature being normal are: normal current <3A, 5V<normal voltage<30V, normal temperature<55℃; If not, start the charging overvoltage, charging undervoltage, overtemperature, and overcurrent protection programs, the charging indicator will display the abnormal charging state, turn off the charging, and go to sleep; If yes, detect the size of the charging power, and if the charging power is insufficient, reduce the charging current; Detect whether the battery is fully charged, the parameters of the battery charging completion are: 16.4V<battery voltage<16.8V, charging current<300mA; If it is, the charging indicator will show the charging completion status, turn off the charging, and go to sleep; If not, continue charging until the charging parameter reaches the battery-charged parameter. 3. The charging and discharging control method of a portable energy storage battery according to claim 1, wherein the PD bidirectional fast charging management control mode comprises: The system completes initialization and enters the PD bidirectional fast charging management control mode to determine whether the buck-boost circuit and the PD protocol circuit are normal; If no, stop execution and return; If so, identify the charging or discharging state of the circuit; If the identification system enters the charging state, it is detected whether the external device is compatible with the PD fast charging protocol; If it is, the system will charge in any mode of 5V/3A, 12V/2A, 20V/1.45A, 3-21V, step by 20mV, until the charging is completed; If no, the system charges in 5V, max 2.4A mode until charging is complete; If the identification system enters the discharge state, check whether the external device is compatible with the PD fast discharge protocol; If it is, the system discharges in any mode of 5V/3A, 12V/2A, 20V/1.45A, 3-21V, step by 20mV, until the discharge is completed, low voltage alarm, indicator light alarm, enter sleep, the discharge The completed parameters are: battery voltage <12.5V; If not, the system discharges in 5V, maximum 2.4A mode, until the discharge is completed with low voltage alarm, indicator light alarm, and goes to sleep. The parameters of the discharge completion are: battery voltage <12.5V. 4. The charging and discharging control method of a portable energy storage battery according to claim 1, wherein the USB automatic detection and output control mode comprises: The system completes initialization and enters USB automatic detection and output control mode; After the system detects that the USB is inserted, it detects whether the USB insertion enable signal is normal. The USB insertion enable signal is I-load. If it is normal, the I-load signal is low. If it is not normal, the I-load signal is high. level; If not, recheck; If it is, turn on the 5V output, and the charge and discharge indicator light indicates the discharge state; Detect the parameters of 5V output current, battery temperature and battery voltage, and judge whether the USB output is normal; If yes, continue with 5V output; If not, turn off the output, turn on the corresponding short-circuit, over-current, over-temperature, and low-voltage protections, the indicator lights give an alarm, and go to sleep. 5 . The charging and discharging control method for a portable energy storage battery according to claim 1 , wherein the inverter output control mode comprises: 6 . The system completes initialization and enters the inverter output control mode; The system judges whether the inverter is turned on, the signal that the inverter is turned on is INV_EN, if it is not turned on, the INV_EN signal is high level, if it is turned on, the INV_EN signal is low level; If not, continue to detect the inverter open signal until the inverter open signal is low level; If it is, turn on the inverter output, and the charge and discharge indicator light indicates the discharge state; Detect the inverter output current, output voltage, battery temperature, battery voltage, and judge whether the inverter output is normal; If yes, proceed to inverter output; If not, turn off the output, turn on the corresponding short-circuit, over-current, over-temperature, and low-voltage protections, the indicator lights give an alarm, and go to sleep. 6. A portable energy storage battery charge and discharge control system, characterized in that, comprising: The main control MCU unit, which is used to detect the charging and discharging overtemperature state, charging and discharging overcurrent state, charging overvoltage state, discharging undervoltage state, charging reverse connection state and short circuit of each functional module of the charging and discharging control system Status, and intelligently control the charging circuit, USB output circuit, buck-boost circuit, inverter output circuit, LED power indicator circuit, alarm circuit, and control the work of the corresponding modules; The charging current detection module is used to detect the charging current and feed it back to the main control MCU unit; The charging voltage detection module is used to detect the charging voltage and feed it back to the main control MCU unit; The temperature detection module is used to detect the temperature of charging and discharging, and feed it back to the main control MCU unit; The USB discharge current detection module is used to detect the current condition of USB discharge and feed it back to the main control MCU unit; The inverter current detection module is used to detect the current condition of the inverter discharge and feed it back to the main control MCU unit; The battery voltage detection module is used to detect the voltage of the battery and feed it back to the main control MCU unit; The inverter voltage detection module is used to detect the voltage of the inverter and feed it back to the main control MCU unit; LED power and LED alarm module, used to control LED power indicator and alarm; The MOS control module is used to detect the MOS switch condition of the control output; Charging circuit module, including adapter charging module, solar charging module, PD fast charging module, converts external output into voltage and current suitable for battery charging; USB discharge circuit module, used to step down the battery to 5V output; The inverter discharge circuit module is used to boost the battery to 160V and convert it to 110V AC output, with a maximum output of 200W. 7 . The portable energy storage battery charging and discharging control system according to claim 6 , wherein the main control MCU unit comprises a HT66F2370 chip. 8 .

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