CN113098112A - Charge-discharge controller and device - Google Patents
Charge-discharge controller and device Download PDFInfo
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- CN113098112A CN113098112A CN202110563861.0A CN202110563861A CN113098112A CN 113098112 A CN113098112 A CN 113098112A CN 202110563861 A CN202110563861 A CN 202110563861A CN 113098112 A CN113098112 A CN 113098112A
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- 238000007599 discharging Methods 0.000 claims description 12
- 102000006381 STAT1 Transcription Factor Human genes 0.000 claims description 5
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- 230000008859 change Effects 0.000 abstract description 5
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- 238000006243 chemical reaction Methods 0.000 description 3
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- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
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- 238000003912 environmental pollution Methods 0.000 description 1
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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
- H02J7/00306—Overdischarge protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/24—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage
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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
- H02J7/00304—Overcurrent 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
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
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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
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
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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
- H02J7/007—Regulation of charging or discharging current or voltage
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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
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The application provides a charge-discharge controller and a device, wherein the charge-discharge controller is provided with a charge circuit unit, an undervoltage protection circuit unit and a discharge circuit unit, the undervoltage protection circuit unit is used for monitoring the voltage of a storage battery, when the voltage is lower than a first threshold value, a low level is output to the discharge circuit unit, the discharge circuit unit is forbidden to output the voltage, and when the voltage is higher than a second threshold value, a high level is output to the discharge circuit unit, so that the discharge circuit unit can output the voltage; the low-voltage power supply can be stopped in time when the output voltage of the storage battery is under-voltage, the load is protected, the harm caused by the low-voltage power supply is avoided, the requirement of the peak power of the load can be guaranteed, the reliability is improved, and the situation that the load and the battery are easily damaged due to the fact that the output voltage changes along with the voltage change of the storage battery is avoided.
Description
Technical Field
The application relates to the technical field of energy power generation, in particular to a charge and discharge controller and a device.
Background
The solar charging and discharging controller is a device for controlling the solar panel to charge the storage battery and the storage battery to supply power to the load, and is used in a solar power generation system, so that energy loss and environmental pollution can be greatly reduced.
The charge and discharge controller in the prior art includes two independent charge circuits and discharge circuits. The charging circuit is mainly controlled by Pulse Width Modulation (PWM), and PWM signals with different duty ratios are used to control the on and off of the field effect transistor, so as to charge the storage battery, or a direct current/direct current (DC/DC) conversion circuit formed by a Buck circuit is used to charge the storage battery. When the load needs to be powered, the storage battery supplies power to the load through an independent discharge circuit.
At present, when most controllers supply power to a load, the output voltage of the controllers changes along with the voltage change of a storage battery, so that the input power of the load is generally required to be processed to a certain extent. However, with the increase of the usage amount of the solar charge and discharge controller, when the controller supplies power to the load, the output voltage of the controller changes along with the voltage change of the storage battery, so that the problem that the load and the battery are damaged is not solved all the time.
Disclosure of Invention
An object of the embodiments of the present application is to provide a charge and discharge controller and a device, so as to solve the problem that when the charge and discharge controller supplies power to a load in the prior art, the output voltage of the charge and discharge controller changes along with the voltage change of a storage battery, so that the load and the battery are easily damaged.
The embodiment of the invention provides a charge and discharge controller, which comprises:
the first end of the charging circuit unit is used for being connected with the energy storage device, and the second end of the charging circuit unit is used for being connected with the storage battery;
the first end of the undervoltage protection circuit unit is used for connecting the storage battery, and the second end of the undervoltage protection circuit unit is connected with the discharge circuit unit;
the first end of the discharge circuit unit is connected with the undervoltage protection circuit unit, and the second end of the discharge circuit unit is used for connecting a load;
the undervoltage protection circuit unit is used for monitoring the voltage of the storage battery, outputting a low level to the discharge circuit unit when the voltage is lower than a first threshold value, and forbidding the discharge circuit unit to output the voltage; when the voltage is higher than a second threshold value, outputting a high level to the discharge circuit unit to enable the discharge circuit unit to output the voltage; wherein the first threshold is less than the second threshold.
In the technical scheme, the charge and discharge controller is provided with a charge circuit unit, an undervoltage protection circuit unit and a discharge circuit unit, wherein the undervoltage protection circuit unit is used for monitoring the voltage of the storage battery, outputting a low level to the discharge circuit unit when the voltage is lower than a first threshold value, forbidding the discharge circuit unit to output the voltage, and outputting a high level to the discharge circuit unit when the voltage is higher than a second threshold value, so as to enable the discharge circuit unit to output the voltage; the low-voltage power supply can be stopped in time when the output voltage of the storage battery is under-voltage, the load is protected, the harm caused by the low-voltage power supply is avoided, the requirement of the peak power of the load can be guaranteed, the reliability is improved, and the situation that the load and the battery are easily damaged due to the fact that the output voltage changes along with the voltage change of the storage battery is avoided.
In some optional embodiments, the charging circuit unit includes:
the charging chip circuit is internally provided with a BUCK circuit and is used for reducing the photovoltaic voltage of the energy storage device to be suitable for the voltage of the storage battery and improving the charging efficiency of the storage battery by utilizing the functions of maximum power tracking and current management;
one end of the first protection circuit is connected with the charging chip circuit, and the other end of the first protection circuit is connected with an energy storage device;
one end of the second protection circuit is connected with the charging chip circuit, and the other end of the second protection circuit is used for being connected with a storage battery;
in the above technical solution, the charging circuit unit is connected to the energy storage device and the battery end, and both are provided with a protection circuit, for example, a fuse for overcurrent protection (also called a current limiting fuse) or a fuse for overheat protection (also called a temperature fuse). In addition, a charging chip with a built-in BUCK circuit is adopted in the charging circuit unit, the BUCK circuit reduces the photovoltaic voltage of the energy storage device to be suitable for the voltage of the storage battery, and the charging chip also has the functions of maximum power tracking and current management so as to improve the charging efficiency of the storage battery.
In some optional embodiments, the discharge circuit unit includes:
the BUCK-BOOST chip circuit is used for converting the variable input voltage into constant output voltage;
and one end of the third protection circuit is connected with the charging chip circuit, and the other end of the third protection circuit is used for connecting a load.
In the above technical solution, a protection circuit is disposed at a side of the discharge circuit unit connected to the load, and the protection circuit is, for example, a fuse for overcurrent protection (also called a current limiting fuse) or a fuse for overheat protection (also called a temperature fuse). Moreover, the discharge circuit unit adopts a BUCK-BOOST chip, so that a 12V/2A power supply can be stably output to supply power to a load when the voltage of the storage battery changes, and the discharge circuit unit is matched with an output protection circuit, so that the safe operation of the load can be ensured, the circuit design of an input power supply part of the load can be greatly simplified, and the product debugging period is shortened.
In some optional embodiments, the charge and discharge controller further includes: and one end of the second detection circuit is connected with the VCC pin of the charging chip, the other end of the second detection circuit is grounded, and the second detection circuit is used for prompting when the energy storage device supplies power.
In the above technical solution, the second detection circuit generally employs a light emitting diode, and when detecting that the VCC pin of the charging chip is a positive voltage, the light emitting diode is turned on to prompt a state that the energy storage device is supplying power.
In some optional embodiments, the charge and discharge controller further includes: and one end of the third detection circuit is connected with an STAT1 pin of the charging chip, the other end of the third detection circuit is used for being connected with the storage battery, and the third detection circuit is used for prompting when the storage battery is charged.
In the above technical solution, the third detection unit generally employs a light emitting diode, which is connected to a STAT1 pin indicating the charging state of the chip, and when the storage battery is charged, the light emitting diode is turned on to indicate the charging state of the storage battery.
In some optional embodiments, the charge and discharge controller further includes: and one end of the first detection circuit is connected with the first end of the charging circuit unit, the other end of the first detection circuit is grounded, and the first detection circuit is used for prompting when the energy storage device is reversely connected.
In the above technical solution, the second detection circuit generally adopts a reverse connection light emitting diode, and when detecting that the input terminal of the charging circuit unit is a negative voltage, the light emitting diode is turned on to alarm and prompt that the energy storage device is in a reverse connection state.
In some optional embodiments, the charge and discharge controller further includes: and two ends of the fourth detection circuit are respectively used for connecting the anode and the cathode of the storage battery, and the fourth detection circuit is used for prompting when the storage battery is reversely connected.
In the above technical solution, the fourth detection circuit generally adopts a mode of reversely connecting the diodes at the positive and negative electrodes of the storage battery, and when the storage battery is reversely connected to the charge-discharge controller, the light-emitting diode is turned on to alarm to prompt that the storage battery is in a reversely connected state.
In some optional embodiments, the charge and discharge controller further includes: and one end of the fifth detection circuit is connected with the second end of the discharge circuit unit, the other end of the fifth detection circuit is used for being connected with a load, and the fifth detection circuit is used for prompting when the load is short-circuited. The fifth detection circuit comprises a second end of the discharge circuit, a resistor R45 and a D pole of a triode Q15 which are sequentially connected, the D pole of the triode Q15 is further connected with a positive pole of a diode LED5, a negative pole of the diode LED5 is grounded, an S pole of the triode Q15 is grounded, a G pole of the triode Q15 is connected with a load after being connected with a resistor R62, and the G pole of the triode Q15 is also connected with a resistor R61 and then is grounded.
In the above technical solution, the fifth detection circuit is connected between the discharge circuit unit and the load, and when the load is short-circuited, the light emitting diode is turned on to alarm and prompt that the load is in a short-circuited state.
In some optional embodiments, the charge and discharge controller further includes: and one end of the sixth detection circuit is connected with the second end of the discharge circuit unit, the other end of the sixth detection circuit is grounded, and the sixth detection circuit is used for prompting when the load works normally.
In the above technical solution, the sixth detection circuit generally employs a light emitting diode, and when the light emitting diode is turned on, the sixth detection circuit prompts that the load is in a normal working state.
The charging and discharging device provided by the embodiment of the invention comprises a shell and the charging and discharging controller arranged in the inner cavity of the shell.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a charge and discharge controller according to an embodiment of the present disclosure;
fig. 2 is a circuit connection diagram of an under-voltage protection circuit according to an embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of another charge and discharge controller provided in an embodiment of the present application;
fig. 4 is a circuit connection diagram of a third detection circuit provided in the embodiment of the present application;
fig. 5 is a circuit connection diagram of a second detection circuit according to an embodiment of the present application;
fig. 6 is a circuit connection diagram of a first detection circuit according to an embodiment of the present disclosure;
fig. 7 is a circuit connection diagram of a sixth detection circuit according to an embodiment of the present application;
fig. 8 is a circuit connection diagram of a fifth detection circuit according to an embodiment of the present application;
fig. 9 is a circuit connection diagram of a fourth detection circuit according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
According to the charge and discharge controller and the device provided by the embodiment of the invention, the voltage of the storage battery is monitored by arranging the undervoltage protection circuit unit, so that the low-voltage power supply can be stopped in time when the output voltage of the storage battery is undervoltage, the load is protected, and the harm caused by the low-voltage power supply is avoided.
To facilitate understanding of the present embodiment, first, a detailed description is given of a charge and discharge controller disclosed in the present embodiment:
referring to fig. 1, fig. 1 is a schematic structural diagram of a charge and discharge controller, which includes a charging circuit unit 101, an under-voltage protection circuit unit 102, and a discharging circuit unit 103.
The first end of the charging circuit unit 101 is used to connect to a solar panel 104 (i.e., an energy storage device, which may be a wind energy storage device, a water energy storage device, or a solar panel, for convenience of description, the solar panel 104 is used in the embodiment of the present invention), and the second end is used to connect to a battery 105; an undervoltage protection circuit unit 102 having a first end connected to the battery 105 and a second end connected to the discharge circuit unit 103; the first end of the discharge circuit unit 103 is connected to the under-voltage protection circuit unit 102, and the second end thereof is connected to the load 106.
The undervoltage protection circuit unit 102 is configured to monitor a voltage of the storage battery 105, output a low level to the discharge circuit unit 103 when the voltage is lower than a first threshold, and prohibit the discharge circuit unit 103 from outputting the voltage; when the voltage is higher than the second threshold, outputting a high level to the discharge circuit unit 103, and enabling the discharge circuit unit 103 to output the voltage; wherein the first threshold is less than the second threshold.
Referring to fig. 2, fig. 2 is a circuit connection structure diagram of the under-voltage protection circuit unit 102, where the under-voltage protection circuit unit 102 includes a zener diode DZ5, a resistor R77, a resistor R78, a resistor R79, a resistor R80, a resistor R81, a resistor R82, a capacitor C22, a capacitor C23, a transistor Q16, and a transistor Q17. The storage battery VBAT is connected with the 2 nd end of the voltage stabilizing diode DZ5, the 1 st end of the voltage stabilizing diode DZ5 is connected with the resistor R77 and then grounded, the 1 st end of the voltage-stabilizing diode DZ5 is connected to one end of a resistor R80, the other end of the resistor R80 is connected to a capacitor C22, a G electrode of a transistor Q16 and one end of a resistor R81, the other end of the resistor R81 is connected to a D electrode of a transistor Q17, the other end of the capacitor C22 is grounded and connected to an S electrode of a transistor Q16, the D electrode of a transistor Q16 is connected to a resistor R78 and then connected to a VBAT of a storage battery, the D electrode of a transistor Q16 is also connected to a resistor R82 and a capacitor C23 which are connected in parallel and then grounded, the D electrode of a transistor Q16 is also connected to a G electrode of a transistor Q17, the S electrode of a transistor Q17 is grounded, and the D electrode of a transistor Q17 is connected to a VLOAD _ EN end of the discharging circuit unit 103 (the VLOAD _ EN end is connected to an enable pin of the BUCK-BOOST chip), and the D. With the undervoltage protection circuit unit 102, for example, if the VBAT voltage of the battery is less than 11V, VLOAD _ EN outputs a low level to the discharge circuit unit 103, and if the VBAT voltage of the battery is greater than 12.7V, VLOAD _ EN outputs a high level to the discharge circuit unit 103. The low level is output to the discharge circuit unit 103, the output voltage of the discharge circuit unit 103 is forbidden, the high level is output to the discharge circuit unit 103, the discharge circuit unit 103 is enabled to output electricity, and the 12V/2A power supply can be stably output to supply power to the load 106 when the voltage of the storage battery 105 changes.
Therefore, the charge and discharge controller according to the embodiment of the present invention has a charge circuit unit 101, an undervoltage protection circuit unit 102, and a discharge circuit unit 103, wherein the undervoltage protection circuit unit 102 is configured to monitor a voltage of the storage battery 105, output a low level to the discharge circuit unit 103 when the voltage is lower than a first threshold, prohibit the discharge circuit unit 103 from outputting the voltage, and output a high level to the discharge circuit unit 103 when the voltage is higher than a second threshold, enable the discharge circuit unit 103 to output the voltage; when the output voltage of the storage battery 105 is under-voltage, the low-voltage power supply can be stopped in time, the load 106 is protected, the harm caused by the low-voltage power supply is avoided, the requirement of the peak power of the load 106 can be met, and the reliability is improved.
The charging circuit can convert solar energy into electrical energy, which in turn charges the battery 105. The specific charging circuit has at least two implementation manners, for example, in the first implementation manner, pulse width modulation PWM control, which uses PWM signals with different duty ratios to control on and off of the field effect transistor, so as to charge the storage battery 105, or in the second implementation manner, a direct current/direct current (DC/DC) conversion circuit formed by a Buck circuit may also be used to charge the storage battery 105.
A specific implementation of the second implementation is described below, that is, the charging circuit in the embodiment of the present invention adopts a Buck circuit, in this specific implementation, the charging circuit unit 101 includes a solar charging chip with a Buck circuit built therein and a chip peripheral circuit, that is, a solar charging chip circuit, the Buck circuit drops the photovoltaic voltage of the solar panel 104 to a voltage suitable for the storage battery 105, the solar charging chip further has maximum power tracking and current management functions, and the charging efficiency of the storage battery 105 is improved through the maximum power tracking and current management functions.
The charging circuit unit 101 is further provided with a first protection circuit and a second protection circuit at the ends connected with the solar panel 104 and the storage battery 105, one end of the first protection circuit is connected with the solar charging chip circuit, and the other end of the first protection circuit is used for being connected with the solar panel 104; and one end of the second protection circuit is connected with the solar charging chip circuit, and the other end of the second protection circuit is connected with the storage battery 105. The charging circuit unit 101 is provided with a protection circuit at both ends connecting the solar panel 104 and the battery 105, and a first protection circuit and a second protection circuit are provided, for example, a current-limiting fuse, a temperature fuse, and the like.
When power needs to be supplied to the load 106, the battery 105 supplies power to the load 106 through the discharge circuit unit 103, and the discharge circuit unit 103 may be a voltage boosting circuit, a voltage reducing circuit, or a voltage boosting and reducing circuit. For example, if the load 106 is a lighting device that is required to have a constant current output and an operating voltage higher than the voltage of the battery 105, the discharge circuit is a direct current/direct current (DC/DC) conversion circuit formed of a Boost voltage step-up circuit. In a specific embodiment of the present invention, the discharging circuit unit 103 is a voltage step-up/step-down circuit, and the discharging circuit unit 103 includes a BUCK-BOOST chip and a chip peripheral circuit, i.e., a BUCK-BOOST chip circuit, and the BUCK-BOOST chip circuit is used for converting a variable input voltage (voltage step-down or voltage step-up) thereof into a constant output voltage. Therefore, the discharge circuit unit 103 adopts a BUCK-BOOST chip, which can ensure that a 12V/2A power supply can be stably output to supply power to the load 106 when the voltage of the storage battery 105 changes, and the output protection circuit is matched, so that not only can the safe operation of the load 106 be ensured, but also the circuit design of the input power supply part of the load 106 can be greatly simplified, and the product debugging period can be shortened.
The discharging circuit unit 103 is further provided with a third protection circuit on one side connected to the load 106, one end of the third protection circuit is connected to the solar charging chip circuit, and the other end of the third protection circuit is used for connecting to the load 106. Similarly, the discharge circuit unit 103 is connected to a third protection circuit provided on one side of the load 106, the third protection circuit being, for example, a fuse for overcurrent protection (also called a current limiting fuse) or a fuse for overheat protection (also called a temperature fuse).
In one or more embodiments, the charge and discharge controller further includes one or more detection circuits, and the detection circuits are used for indicating the working state (for example, the battery is charged and supplies power to the load 106) or the abnormal state (for example, the storage battery 105 is reversely connected and the solar panel 104 is reversely connected) of the charge and discharge controller, so as to implement the protection functions of short circuit alarm, reverse connection prevention and the like, and improve the stability and reliability of the charge and discharge controller. Wherein, the operation state or abnormal state can be prompted or displayed in various manners, such as a buzzer prompt or a light emitting device prompt, and some embodiments below are described in a simplest manner of lighting the light emitting diode, as shown in fig. 3, when the solar panel 104 is reversely connected, the light emitting diode of the first detection circuit 201 is lighted for prompting, when the solar panel 104 supplies power, the light emitting diode of the second detection circuit 202 is lighted for prompting, when the battery is charged, the light emitting diode of the third detection circuit 203 is lighted for prompting, when the battery is reversely connected, the light emitting diode of the fourth detection circuit 204 is lighted for prompting, when the load 106 is short-circuited, the light emitting diode of the fifth detection circuit 205 is lighted for prompting, when the load 106 normally operates, the light emitting diode of the sixth detection circuit 206 is lighted for prompting, it is clear that, the light emitting diode may adopt other devices or equipment, which is not described in detail.
Referring to fig. 5, fig. 5 is a diagram illustrating a second detection circuit 202 according to an embodiment of the present invention, wherein one end of the second detection circuit 202 is connected to a VCC pin of a solar charging chip, and the other end is grounded, and the second detection circuit 202 is used for prompting when the solar panel 104 supplies power. Specifically, the second detection circuit 202 includes a light emitting diode LED2 and a resistor R56, the anode of the light emitting diode LED2 is connected to the VCC pin of the solar charging chip through the resistor R56, the cathode of the light emitting diode LED2 is grounded, and when the positive voltage of the VCC pin of the solar charging chip is detected, the light emitting diode LED2 is turned on to indicate the power supply state of the solar panel 104.
Referring to fig. 4, fig. 4 shows a third detection circuit according to an embodiment of the present invention, in which one end of the third detection circuit 203 is connected to the STAT1 pin of the solar charging chip U1, and the other end thereof is used for connecting to the battery V _ BAT +, and the third detection circuit 203 is used for prompting when charging the battery 105. Specifically, the third detection unit includes a resistor R76, a resistor R49, a resistor R60 and a light emitting diode LED3, a cathode of the light emitting diode LED3 is connected to a STAT1 pin indicating the charging state of the solar chip, an anode of the light emitting diode LED3 is connected to the battery V _ BAT + through a resistor R76 and then grounded, the battery V _ BAT + is also connected to a resistor R49 and then grounded, a resistor R49 is also connected to a STAT2 pin indicating the charging state of the solar chip, and when the battery 105 is charged, the light emitting diode LED3 is turned on to indicate the charging state of the battery 105.
Referring to fig. 6, fig. 6 is a diagram of a first detection circuit 201 according to an embodiment of the present invention, one end of the first detection circuit 201 is connected to the first end of the charging circuit unit 101, and the other end is grounded, where the first detection circuit 201 is used for prompting when the solar panel 104 is reversely connected. The first detection circuit 201 includes a resistor 57 and a light emitting diode LED1, and when detecting that the input terminal of the charging circuit unit 101 is negative voltage, the light emitting diode LED1 is turned on to alarm the solar panel 104 in the reverse connection state.
Referring to fig. 9, fig. 9 is a fourth detection circuit 204 according to an embodiment of the present invention, two ends of the fourth detection circuit 204 are respectively used for connecting the positive electrode and the negative electrode of the storage battery 105, and the fourth detection circuit 204 is used for prompting when the storage battery 105 is reversely connected. The fourth detection circuit 204 comprises a resistor R28, a resistor R75, a resistor R74, a resistor R43, a MOS tube U5, a triode Q4 and a diode LED4, wherein a storage battery V _ BAT + is connected with the negative electrode of the diode LED4, the positive electrode of the diode LED4 is connected with a resistor R43 and then connected with a storage battery V _ BAT-, the storage battery V _ BAT + is also sequentially connected with resistors R74 and R75 and then connected with an analog ground, and the R75 is connected with a circuit of the triode Q4, the MOS tube U5 and the resistor R28 in parallel, when the storage battery 105 is reversely connected with a charge-discharge controller, the diode LED4 is lightened to alarm and prompt that the storage battery 105 is in a reverse connection state.
Referring to fig. 8, fig. 8 is a fifth detection circuit 205 according to an embodiment of the present invention, one end of the fifth detection circuit 205 is connected to the second end of the discharge circuit unit 103, the other end of the fifth detection circuit 205 is used for connecting to the load 106, and the fifth detection circuit 205 is used for prompting when the load 106 is short-circuited. Specifically, the fifth detection circuit 205 includes a second end of the discharge circuit, a resistor R45, and a D electrode of a transistor Q15, the D electrode of the transistor Q15 is further connected to an anode of a diode LED5, a cathode of the diode LED5 is grounded, an S electrode of the transistor Q15 is grounded, a G electrode of the transistor Q15 is connected to the resistor R62 and then connected to the load 106, and the G electrode of the transistor Q15 is also connected to the resistor R61 and then grounded, and when the load 106 is short-circuited, the light emitting diode is turned on to alert that the load 106 is in a short-circuited state.
Referring to fig. 7, the charge/discharge controller further includes: and a sixth detection circuit 206, one end of which is connected to the second end of the discharge circuit unit 103, and the other end of which is grounded, wherein the sixth detection circuit 206 is used for presenting when the load 106 is working normally. The sixth detection circuit 206 includes a resistor R44 and a light emitting diode LED6, the positive electrode of the light emitting diode LED6 is connected to the second end of the discharge circuit unit 103 after being connected to the resistor R44, the negative electrode of the light emitting diode LED6 is grounded, and when the light emitting diode LED6 is turned on, it indicates that the load 106 is in a normal operating state.
Based on the same inventive concept, an embodiment of the present application further provides a charging and discharging device, including a housing, and the charging and discharging controller according to any one of the above embodiments, disposed in an inner cavity of the housing.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
In addition, units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
Furthermore, the functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
In this document, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The above description is only an example of the present application and is not intended to limit the scope of the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (10)
1. A charge-discharge controller, comprising:
the first end of the charging circuit unit is used for being connected with the energy storage device, and the second end of the charging circuit unit is used for being connected with the storage battery;
the first end of the undervoltage protection circuit unit is used for connecting the storage battery, and the second end of the undervoltage protection circuit unit is connected with the discharge circuit unit;
the first end of the discharge circuit unit is connected with the undervoltage protection circuit unit, and the second end of the discharge circuit unit is used for connecting a load;
the undervoltage protection circuit unit is used for monitoring the voltage of the storage battery, outputting a low level to the discharge circuit unit when the voltage is lower than a first threshold value, and forbidding the discharge circuit unit to output the voltage; when the voltage is higher than a second threshold value, outputting a high level to the discharge circuit unit to enable the discharge circuit unit to output the voltage; wherein the first threshold is less than the second threshold.
2. The charge and discharge controller according to claim 1, wherein the charging circuit unit comprises:
the charging chip circuit is internally provided with a BUCK circuit and is used for reducing the photovoltaic voltage of the energy storage device to be suitable for the voltage of the storage battery and improving the charging efficiency of the storage battery by utilizing the functions of maximum power tracking and current management;
one end of the first protection circuit is connected with the charging chip circuit, and the other end of the first protection circuit is connected with an energy storage device;
and one end of the second protection circuit is connected with the charging chip circuit, and the other end of the second protection circuit is used for connecting a storage battery.
3. The charge and discharge controller according to claim 2, wherein the discharge circuit unit comprises:
the BUCK-BOOST chip circuit is used for converting the variable input voltage into constant output voltage;
and one end of the third protection circuit is connected with the charging chip circuit, and the other end of the third protection circuit is used for connecting a load.
4. A charge and discharge controller according to claim 2, further comprising: and one end of the second detection circuit is connected with the VCC pin of the charging chip, the other end of the second detection circuit is grounded, and the second detection circuit is used for prompting when the energy storage device supplies power.
5. A charge and discharge controller according to claim 2, further comprising: and one end of the third detection circuit is connected with an STAT1 pin of the charging chip, the other end of the third detection circuit is used for being connected with the storage battery, and the third detection circuit is used for prompting when the storage battery is charged.
6. The charge and discharge controller according to claim 1, further comprising: and one end of the first detection circuit is connected with the first end of the charging circuit unit, the other end of the first detection circuit is grounded, and the first detection circuit is used for prompting when the energy storage device is reversely connected.
7. The charge and discharge controller according to claim 1, further comprising: and two ends of the fourth detection circuit are respectively used for connecting the anode and the cathode of the storage battery, and the fourth detection circuit is used for prompting when the storage battery is reversely connected.
8. The charge and discharge controller according to claim 1, further comprising: and one end of the fifth detection circuit is connected with the second end of the discharge circuit unit, the other end of the fifth detection circuit is used for being connected with a load, and the fifth detection circuit is used for prompting when the load is short-circuited.
9. The charge and discharge controller according to claim 1, further comprising: and one end of the sixth detection circuit is connected with the second end of the discharge circuit unit, the other end of the sixth detection circuit is grounded, and the sixth detection circuit is used for prompting when the load works normally.
10. A charging and discharging device comprising a housing, and a charging and discharging controller as claimed in any one of claims 1 to 9 provided in an inner cavity of the housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110563861.0A CN113098112A (en) | 2021-05-21 | 2021-05-21 | Charge-discharge controller and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110563861.0A CN113098112A (en) | 2021-05-21 | 2021-05-21 | Charge-discharge controller and device |
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| CN113098112A true CN113098112A (en) | 2021-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110563861.0A Pending CN113098112A (en) | 2021-05-21 | 2021-05-21 | Charge-discharge controller and device |
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Cited By (1)
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| CN116054337A (en) * | 2023-01-13 | 2023-05-02 | 中国铁塔股份有限公司 | Power supply device and method |
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