CN218633375U - Protection circuit of storage battery in controller - Google Patents
Protection circuit of storage battery in controller Download PDFInfo
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- CN218633375U CN218633375U CN202222172332.0U CN202222172332U CN218633375U CN 218633375 U CN218633375 U CN 218633375U CN 202222172332 U CN202222172332 U CN 202222172332U CN 218633375 U CN218633375 U CN 218633375U
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Abstract
The utility model relates to a battery control technical field specifically is a protection circuit of inside battery of controller, and it can effectively play the guard action to the battery, and it includes main power supply and battery, and the load passes through switch circuit and connects the main power supply with the battery, the battery passes through battery charging circuit and connects the main power supply, a serial communication port, battery charging circuit connects detection circuitry and CPU circuit, detection circuitry with the CPU circuit links to each other, the CPU circuit includes MCU chip U1, CPU power supply circuit is connected to MCU chip U1, detection circuitry includes battery low pressure detection circuitry, charging voltage detection circuitry, battery real-time voltage detection circuitry.
Description
Technical Field
The utility model relates to a battery control technology field specifically is a protection circuit of inside battery of controller.
Background
The rapid development of new energy sources has increasingly large demands on industries such as storage batteries and energy storage. Many products such as electric bicycles, electric automobiles, EPS, UPS, fire alarm controllers and the like can not be separated from the storage battery. The storage battery is almost undisclosed in our life. The service life of the storage battery is a key problem, the storage battery is shortened even directly damaged due to overvoltage charging, overcurrent discharging and the like of the storage battery, and the most serious problem can be explosion and fire to cause great loss.
In the fire protection industry, basically, controllers are equipped with batteries as backup power sources. The charging and discharging of the storage battery in the controller have strict requirements. When the main power supply is powered off, the power supply can be automatically switched to a standby power supply (a storage battery); when the main power supply is recovered, the main power supply can be automatically switched to; the working states of the main power supply and the standby power supply are indicated, and the main power supply is provided with an overcurrent protection measure. The main and standby power supplies should not be switched to cause the controller to malfunction. The backup power source is charged for 24 hours at a discharge to termination voltage and is of a capacity to provide 8 hours of operation of the controller in the monitoring mode.
In the existing circuit, a protective circuit is not provided for the storage battery, so that certain potential safety hazard exists in the use process of the storage battery.
Disclosure of Invention
In order to solve the problem that the current battery does not provide the protection, the utility model provides a protection circuit of the inside battery of controller, it can effectively play the guard action to the battery.
The technical scheme is as follows: the utility model provides a protection circuit of inside battery of controller, its includes main power supply and battery, and the load passes through switch circuit to be connected the main power supply with the battery, the battery passes through battery charging circuit to be connected the main power supply, its characterized in that, battery charging circuit connects detection circuitry and CPU circuit, detection circuitry with the CPU circuit links to each other, the CPU circuit includes MCU chip U1, MCU chip U1 connects CPU power supply circuit, detection circuitry includes battery low pressure detection circuitry, charging voltage detection circuitry, the real-time voltage detection circuitry of battery.
It is further characterized in that: the CPU power supply circuit comprises a voltage stabilizing chip U2, wherein a pin 2 of the voltage stabilizing chip U2 is connected with one end of a capacitor C101, the anode of a capacitor E1, one end of a resistor R1 and one end of a resistor R2, the other end of the resistor R1 and the other end of the resistor R2 are connected with the cathode of a common cathode diode D3, the anode of the common cathode diode D3 is connected with the storage battery and the main power supply, a pin 3 of the voltage stabilizing chip U2 outputs the working voltage of the MCU chip U1 and is connected with one end of a capacitor C102 and the anode of a capacitor E2, and the other end of the capacitor C101, the other end of the capacitor C102, the cathode of the capacitor E1, the cathode of the capacitor E2 and a pin 1 of the voltage stabilizing chip U2 are all grounded;
the storage battery low-voltage detection circuit comprises a triode Q202, the base electrode of the triode Q202 is connected with one end of a resistor R506 and one end of a resistor R507, the collector electrode of the triode Q202 is connected with the other end of the resistor R507 and the storage battery, the other end of the resistor R506 is connected with the collector electrode of a triode Q113, the base electrode of the triode Q113 is connected with one end of a resistor R504 and one end of a resistor R505, the other end of the resistor R504 is connected with a 5V power supply, and the other end of the resistor R505 is connected with the emitter electrode of the triode Q113 and a pin 14 of the MCU chip U1;
the real-time voltage detection circuit of the storage battery comprises a resistor R11 with one end connected with the storage battery, the other end of the resistor R11 is connected with one end of a resistor R12, one end of a capacitor C106 and the 5 pins of the MCU chip U1, and the other end of the resistor R12 and the other end of the capacitor C106 are grounded;
a main power supply protection circuit is arranged between the switch circuit and the main power supply, the main power supply protection circuit comprises a triode T1, the base of the triode T1 is connected with one end of a resistor R6 and one end of a resistor R7, the other end of the resistor R6 is connected with the anode of a voltage regulator tube V1, the collector of the triode T1 is connected with the cathode of a diode D5, the anode of the diode D5 is connected with one end of a resistor R3 and the grid end of an MOS tube U101, the drain end of the MOS tube U101 is connected with the main power supply, the source end of the MOS tube U101 is connected with one end of the resistor R3, the cathode of the voltage regulator tube V1 and the switch circuit, and the other end of the resistor R7 and the emitter of the triode T1 are connected with the switch circuit and the ground;
the switch circuit comprises a main power switch K1 and a storage battery switch K2, one end of the main power switch K1 is connected with the main power protection circuit through a fuse F1, the other end of the main power switch K1 is connected with a load X1, one end of the storage battery switch K2 is connected with the cathode of the storage battery and a voltage-regulator tube D901 through a fuse F2, the anode of the voltage-regulator tube D901 is grounded, and the other end of the storage battery switch K2 is connected with the load X1;
the storage battery charging circuit comprises a power conversion chip U3, wherein 4 pins of the power conversion chip U3 are connected with one end of a capacitor C103, one end of an inductor L1, the anode of a capacitor E101 and a main power supply, the other end of the inductor L1 is connected with the anode of a diode D201 and 3 pins of the power conversion chip U3, the cathode of the diode D201 is connected with one end of a resistor R15, the anode of the capacitor E102, one end of a capacitor C104, one end of a resistor R4 and one end of a resistor R5, the other end of the resistor R15 is connected with one end of a resistor R16 and the 5 pins of the power conversion chip U3, the other end of the resistor R16, the cathode of the capacitor E102, the other end of the capacitor C104, the pin 1 of the power conversion chip U3, the other end of the capacitor C103 and the cathode of the capacitor E101 are all grounded, a pin 2 of the power conversion chip U3 is connected with the main power supply end through a voltage stabilizing tube D501, the other end of the resistor R4 is connected with the other end of the resistor R5 and connected with one end 701 and one end of an MOS tube U102, the grid end of the MOS tube is connected with the anode of a diode D6 and the other end of the resistor R701, the cathode of the diode D6 is connected with the collector of a triode Q118, the base of the triode Q118 is connected with one end of a resistor R508 and one end of a resistor R509, the other end of the resistor R508 is connected with a 5V power supply, the other end of the resistor R509 is connected with the emitter of the triode Q118 and the 15 pins of the MCU chip U1, the drain end of the MOS tube U102 outputs charging voltage and is connected with the anode of a diode D103, the cathode of the diode D103 is connected with one end of a resistor R702, the source end of the MOS tube U103 and the storage battery, the grid end of the MOS tube U103 is connected with the anode of a diode D7 and the other end of the resistor R702, the cathode of the diode D7 is connected with the collector of a triode Q119, the base of the triode Q119 is connected with one end of a resistor R510 and one end of a resistor R511, and the other end of the resistor R510 is connected with the 5V power supply, the other end of the resistor R511 is connected with an emitter of the triode Q119 and a pin 1 of the MCU chip U1, a drain end of the MOS tube U103 is connected with an anode of the diode D301, an anode of the diode D301 outputs fault power supply voltage and is connected with an anode of the capacitor E11 and a cathode of the diode D302, an anode of the diode D302 is connected with one end of the resistor R18 and the main power supply, the other end of the resistor R18 is connected with one end of the resistor R19, one end of the capacitor C105 and a pin 4 of the MCU chip U1, and a cathode of the capacitor E11, the other end of the resistor R19 and the other end of the capacitor C105 are all grounded;
the charging voltage detection circuit comprises a resistor R13 with one end connected with charging voltage, the other end of the resistor R13 is connected with one end of a capacitor C107, one end of a resistor R14 and the 6 pins of the MCU chip U1, and the other end of the resistor R14 and the other end of the capacitor C107 are both grounded;
the storage battery charging circuit is also connected with a main electric fault lamp circuit, a storage battery undervoltage lamp circuit, a charging lamp circuit and a normal operation lamp circuit, the main electric fault lamp circuit comprises a light emitting diode HL1 with the anode connected with fault power supply voltage, the cathode of the light emitting diode HL1 is connected with one end of a resistor R101, the other end of the resistor R101 is connected with the collector of a triode Q115, the emitter of the triode Q115 is connected with one end of a base electrode connecting resistor R501, the other end of the resistor R501 is connected with the 18 pins of the MCU chip U1, the storage battery fault lamp circuit comprises a light emitting diode HL2 with the anode connected with fault power supply voltage, the cathode of the light emitting diode HL2 is connected with one end of a resistor R102, the other end of the resistor R102 is connected with the collector of the triode Q116, the emitter of the triode Q116 is connected with one end of the base electrode connecting resistor R502, the other end of resistance R502 is connected the 17 feet of MCU chip U1, battery undervoltage lamp circuit includes that the positive pole connects trouble supply voltage's emitting diode HL3, emitting diode HL 3's negative pole connecting resistance R103 one end, triode Q117's collecting electrode is connected to the resistance R103 other end, triode Q117's projecting pole is connected, base connecting resistance R503 one end, resistance R503's the other end is connected MCU chip U1's 16 feet, the lamp circuit that charges includes that one end connects charging voltage's resistance R27, emitting diode HL 4's positive pole is connected to the resistance R27 other end, emitting diode HL 4's negative pole ground connection, normal operating lamp circuit includes that the positive pole connects charging voltage's emitting diode HL5, emitting diode HL 5's negative pole connecting resistance R17 one end, resistance R17 other end ground connection.
Adopt the utility model discloses afterwards, increased detection circuitry and CPU circuit on current circuit basis, can carry out functions such as battery low pressure detection, charging voltage detection, battery real-time voltage detection to obtain effectual monitoring to whole battery charging circuit, play the guard action to the battery, guaranteed the fail safe nature of whole circuit.
Drawings
FIG. 1 is a schematic circuit diagram of the present invention;
FIG. 2 is a schematic diagram of a CPU circuit;
FIG. 3 is a schematic diagram of a switching circuit;
FIG. 4 is a schematic diagram of a main power protection circuit;
FIG. 5 is a schematic diagram of a battery charging circuit;
FIG. 6 is a schematic diagram of a detection circuit;
fig. 7 is a schematic diagram of an indicator light circuit.
Detailed Description
Referring to fig. 1 to 7, a protection circuit for a storage battery inside a controller includes a main power supply and a storage battery, a load is connected with a 24V main power supply and a storage battery Vbat through a switch circuit, the storage battery Vbat is connected with the main power supply through a storage battery charging circuit, the storage battery charging circuit is connected with a detection circuit and a CPU circuit, the detection circuit is connected with the CPU circuit, the CPU circuit includes an MCU chip U1, the MCU chip U1 is connected with a CPU power supply circuit, the CPU power supply circuit includes a voltage stabilizing chip U2, a pin 2 of the voltage stabilizing chip U2 is connected with one end of a capacitor C101, an anode of the capacitor E1, one end of a resistor R2, the other end of the resistor R1 and the other end of the resistor R2 are connected with a cathode of a common cathode diode D3, an anode of the common cathode diode D3 is connected with the storage battery and the main power supply, a pin 3 of the voltage stabilizing chip U2 outputs a working voltage of the MCU chip U1 and is connected with one end of a capacitor C102 and an anode of the capacitor E2, the other end of the capacitor C101, the other end of the capacitor C102, the other end of the capacitor E1, a cathode of the storage battery Vbat is grounded, and the storage battery Vbat 24V main power supply can be supplied by the storage battery Vbat 24V. The MCU chip U1 is also connected with a PCU program burning interface X2.
The detection circuit comprises a storage battery low-voltage detection circuit, a charging voltage detection circuit and a storage battery real-time voltage detection circuit.
The battery low voltage detection circuit comprises a triode Q202, the base electrode of the triode Q202 is connected with one end of a resistor R506, one end of a resistor R507, the other end of a collector electrode of the triode Q202 is connected with the other end of a battery Vbat, the other end of the resistor R506 is connected with the collector electrode of the triode Q113, one end of the base electrode of the triode Q113 is connected with one end of a resistor R504, one end of a resistor R505, the other end of the resistor R504 is connected with a 5V power supply, the other end of the resistor R505 is connected with the emitter electrode of the triode Q113 and the 14 pins of the MCU chip U1, and when the voltage of the battery Vbat is too low, the voltage output of the battery can be closed through the triode.
The real-time voltage detection circuit of the storage battery comprises a resistor R11 with one end connected with the Vbat of the storage battery, the other end of the resistor R11 is connected with one end of a resistor R12, one end of a capacitor C106 and 5 pins of an MCU chip U1, and the other end of the resistor R12 and the other end of the capacitor C106 are grounded, so that the real-time voltage of the storage battery can be detected.
A main power supply protection circuit is arranged between the switching circuit and a main power supply, the main power supply protection circuit comprises a triode T1, the base of the triode T1 is connected with one end of a resistor R6 and one end of a resistor R7, the other end of the resistor R6 is connected with the anode of a voltage regulator tube V1, the collector of the triode T1 is connected with the cathode of a diode D5, the anode of the diode D5 is connected with one end of a resistor R3 and the grid end of an MOS tube U101, the drain end of the MOS tube U101 is connected with the main power supply, the source end of the MOS tube U101 is connected with one end of the resistor R3, the cathode of the voltage regulator tube V1 and the switching circuit, the other end of the resistor R7 and the emitter of the triode T1 are connected with the switching circuit and the ground, and when the voltage of the main power supply is higher than 30V according to the selection of the voltage regulator tube V1, the input of the main power supply can be automatically closed.
The switch circuit comprises a main power switch K1 and a storage battery switch K2, one end of the main power switch K1 is connected with the main power protection circuit through a fuse F1, the other end of the main power switch K1 is connected with a load X1, one end of the storage battery switch K2 is connected with the cathode of the storage battery and a voltage regulator tube D901 through the fuse F2, the anode of the voltage regulator tube D901 is grounded, the other end of the storage battery switch K2 is connected with the load X1, and the main power supply and the storage battery power supply are switched through the main power switch K1 and the main power switch K2.
The storage battery charging circuit comprises a power conversion chip U3, wherein 4 pins of the power conversion chip U3 are connected with one end of a capacitor C103, one end of an inductor L1, the anode of a capacitor E101 and a main power supply, the other end of the inductor L1 is connected with the anode of a diode D201 and the 3 pins of the power conversion chip U3, the cathode of the diode D201 is connected with one end of a resistor R15, the anode of a capacitor E102, one end of a capacitor C104, one end of a resistor R4 and one end of a resistor R5, the other end of the resistor R15 is connected with one end of a resistor R16 and the 5 pins of the power conversion chip U3, the other end of the resistor R16, the cathode of the capacitor E102, the other end of the capacitor C104, the 1 pin of the power conversion chip U3, the other end of the capacitor C103 and the cathode of the capacitor E101 are all grounded, a pin 2 of the power conversion chip U3 is connected with the main power supply through a voltage stabilizing tube D501, the other end of the resistor R4 is connected with the source end of the other end of the resistor R5, one end of a resistor R701 and the MOS tube U102, the grid end of the MOS tube is connected with the anode of a diode D6 and the other end of a resistor R701, the cathode of the diode D6 is connected with the collector of the triode Q118, the base of the triode Q118 is connected with one end of a resistor R508 and one end of a resistor R509, the other end of the resistor R508 is connected with a 5V power supply, the other end of the resistor R509 is connected with the emitter of the triode Q118 and the 15 pin of the MCU chip U1, the drain of the MOS tube U102 outputs a charging voltage and is connected with the anode of the diode D103, the cathode of the diode D103 is connected with one end of a resistor R702, the source of the MOS tube U103 and a storage battery, the gate of the MOS tube U103 is connected with the anode of the diode D7 and the other end of the resistor R702, the cathode of the diode D7 is connected with the collector of the triode Q119, the base of the diode Q119 is connected with one end of a resistor R510 and one end of a resistor R511, the other end of the resistor R510 is connected with a 5V power supply, the emitter of the triode Q119 and the 1 pin of the MCU chip U1, the drain of the MOS tube U103 is connected with the anode of the diode D301, the anode of the diode D301 outputs a fault supply voltage and is connected with the anode of the capacitor E11, the cathode of the diode D302, the anode of the diode D302 are connected with one end of the resistor R18 and the main power supply, the other end of the resistor R18 is connected with one end of the resistor R19, one end of the capacitor C105 and the 4 pins of the MCU chip U1, and the cathode of the capacitor E11, the other end of the resistor R19 and the other end of the capacitor C105 are all grounded.
Charging voltage detection circuitry includes that charging voltage's resistance R13 is connected to one end, and electric capacity C107 one end, resistance R14 one end, MCU chip U1's 6 feet are connected to the resistance R13 other end, and the resistance R14 other end, the equal ground connection of electric capacity C107 other end for detect charging voltage.
The storage battery charging circuit is also connected with a main electric fault lamp circuit, a storage battery undervoltage lamp circuit, a charging lamp circuit and a normal operation lamp circuit, the main electric fault lamp circuit comprises a light emitting diode HL1 with an anode connected with a fault power supply voltage, one end of a cathode connecting resistor R101 of the light emitting diode HL1, the other end of the resistor R101 is connected with a collector of a triode Q115, an emitter of the triode Q115 is connected, one end of a base connecting resistor R501 is connected with one end of an MCU chip U1, the other end of the resistor R501 is connected with a pin 18 of the MCU chip U1, the storage battery undervoltage lamp circuit comprises a light emitting diode HL2 with an anode connected with a fault power supply voltage, one end of a cathode connecting resistor R102 of the light emitting diode HL2 is connected with one end of a collector of a triode Q116, an emitter of the triode Q116 is connected, one end of a base connecting resistor R502 is connected with one end of the MCU chip U1, the other end of the storage battery undervoltage comprises a light emitting diode HL3 with an anode connected with a fault power supply voltage, one end of the light emitting diode HL3 is connected with a ground resistor R5, one end of the light emitting diode HL5 is connected with a ground connection point of the light emitting diode.
The utility model discloses the function that mainly has, when having the main power supply, the main power supply is for the controller power supply while the main power supply for battery charging, and main power supply voltage is higher than DC30V or electric current is greater than 2A, and the main power supply can self-closing fall. When the main power supply is not available, the controller is automatically switched to a standby power supply (a storage battery) to supply power to the controller. The circuit is provided with circuits for detecting the faults, overhigh voltage, undervoltage of the main power supply and the standby power supply (storage battery) circuit, and the like. The utility model discloses built-in CPU comes real-time supervision and manages the protection of these circuits to the charge-discharge of battery.
Claims (6)
1. A protection circuit of a storage battery in a controller comprises a main power supply and the storage battery, wherein a load is connected with the main power supply and the storage battery through a switch circuit, and the storage battery is connected with the main power supply through a storage battery charging circuit; the storage battery low-voltage detection circuit comprises a triode Q202, the base electrode of the triode Q202 is connected with one end of a resistor R506 and one end of a resistor R507, the collector electrode of the triode Q202 is connected with the other end of the resistor R507 and the storage battery, the other end of the resistor R506 is connected with the collector electrode of a triode Q113, the base electrode of the triode Q113 is connected with one end of a resistor R504 and one end of a resistor R505, the other end of the resistor R504 is connected with a 5V power supply, and the other end of the resistor R505 is connected with the emitter electrode of the triode Q113 and a pin 14 of the MCU chip U1; the real-time voltage detection circuit of the storage battery comprises a resistor R11 with one end connected with the storage battery, the other end of the resistor R11 is connected with one end of a resistor R12, one end of a capacitor C106 and the 5 pins of the MCU chip U1, and the other end of the resistor R12 and the other end of the capacitor C106 are grounded; the power supply protection circuit comprises a triode T1, the base of the triode T1 is connected with one end of a resistor R6 and one end of a resistor R7, the other end of the resistor R6 is connected with the anode of a voltage regulator tube V1, the collector of the triode T1 is connected with the cathode of a diode D5, the anode of the diode D5 is connected with one end of a resistor R3 and the grid end of an MOS tube U101, the drain end of the MOS tube U101 is connected with the main power supply, the source end of the MOS tube U101 is connected with one end of the resistor R3, the cathode of the voltage regulator tube V1 and the switch circuit, and the other end of the resistor R7 and the emitter of the triode T1 are connected with the switch circuit and the ground.
2. The protection circuit of the storage battery inside the controller according to claim 1, wherein the CPU power supply circuit comprises a voltage regulation chip U2, wherein 2 pins of the voltage regulation chip U2 are connected to one end of a capacitor C101, the positive electrode of a capacitor E1, one end of a resistor R1, and one end of a resistor R2, the other end of the resistor R1 and the other end of the resistor R2 are connected to the cathode of a cascode diode D3, the anode of the cascode diode D3 is connected to the storage battery and the main power supply, 3 pins of the voltage regulation chip U2 output the operating voltage of the MCU chip U1 and are connected to one end of a capacitor C102 and the positive electrode of a capacitor E2, and the other end of the capacitor C101, the other end of the capacitor C102, the negative electrode of the capacitor E1, the negative electrode of the capacitor E2, and 1 pin of the voltage regulation chip U2 are all grounded.
3. The protection circuit of the storage battery in the controller according to claim 1, wherein the switch circuit comprises a main power switch K1 and a storage battery switch K2, one end of the main power switch K1 is connected with the main power protection circuit through a fuse F1, the other end of the main power switch K1 is connected with a load X1, one end of the storage battery switch K2 is connected with the cathode of the storage battery and a voltage regulator tube D901 through a fuse F2, the anode of the voltage regulator tube D901 is grounded, and the other end of the storage battery switch K2 is connected with the load X1.
4. The protection circuit of the storage battery in the controller according to claim 1, wherein the storage battery charging circuit comprises a power conversion chip U3, wherein 4 pins of the power conversion chip U3 are connected with one end of a capacitor C103, one end of an inductor L1, the anode of a capacitor E101 and a main power supply, the other end of the inductor L1 is connected with the anode of a diode D201 and 3 pins of the power conversion chip U3, the cathode of the diode D201 is connected with one end of a resistor R15, the anode of a capacitor E102, one end of a capacitor C104, one end of a resistor R4 and one end of a resistor R5, the other end of the resistor R15 is connected with one end of a resistor R16 and 5 pins of the power conversion chip U3, the other end of the resistor R16, the cathode of the capacitor E102, the other end of the capacitor C104, pin 1 of the power conversion chip U3, the other end of the capacitor C103 and the cathode of the capacitor E101 are all grounded, and pin 2 of the power conversion chip U3 is connected with the main power supply through a voltage regulator tube D501, the other end of the resistor R4 is connected with the other end of the resistor R5 and is connected with one end of a resistor R701 and the source end of an MOS tube U102, the gate end of the MOS tube is connected with the anode of a diode D6 and the other end of the resistor R701, the cathode of the diode D6 is connected with the collector of a triode Q118, the base of the triode Q118 is connected with one end of a resistor R508 and one end of a resistor R509, the other end of the resistor R508 is connected with a 5V power supply, the other end of the resistor R509 is connected with the emitter of the triode Q118 and the 15 feet of the MCU chip U1, the drain end of the MOS tube U102 outputs charging voltage and is connected with the anode of a diode D103, the cathode of the diode D103 is connected with one end of a resistor R702, the source end of the MOS tube U103 and the storage battery, the gate end of the MOS tube U103 is connected with the anode of a diode D7 and the other end of the resistor R702, and the cathode of the diode D7 is connected with the collector of the triode Q119, triode Q119's base connecting resistance R510 one end, resistance R511 one end, the 5V power is connected to the resistance R510 other end, the resistance R511 other end is connected triode Q119's projecting pole 1 foot of MCU chip U1, diode D301's positive pole is connected to MOS pipe U103's drain terminal, diode D301's positive pole output trouble supply voltage connects electric capacity E11's positive pole, diode D302's negative pole, diode D302's anodal connecting resistance R18 one end the main power supply, resistance R18 other end connecting resistance R19 one end, electric capacity C105 one end 4 feet of MCU chip U1, electric capacity E11's negative pole, the resistance R19 other end, the electric capacity C105 other end all ground connection.
5. The protection circuit of the storage battery in the controller according to claim 1, wherein the charging voltage detection circuit comprises a resistor R13 having one end connected to a charging voltage, the other end of the resistor R13 is connected to one end of a capacitor C107, one end of a resistor R14, and the pin 6 of the MCU chip U1, and the other end of the resistor R14 and the other end of the capacitor C107 are both grounded.
6. A protection circuit of a storage battery in a controller according to claim 1, characterized in that the storage battery charging circuit is further connected with a main electric fault lamp circuit, a storage battery undervoltage lamp circuit, a charging lamp circuit and a normal operation lamp circuit, the main electric fault lamp circuit comprises a light emitting diode HL1 with the anode connected with a fault supply voltage, the cathode of the light emitting diode HL1 is connected with one end of a resistor R101, the other end of the resistor R101 is connected with the collector of a transistor Q115, the emitter of the transistor Q115 is connected with one end of a base connected with a resistor R501, the other end of the resistor R501 is connected with 18 pins of the MCU chip U1, the storage battery fault lamp circuit comprises a light emitting diode HL2 with the anode connected with a fault supply voltage, the cathode of the light emitting diode HL2 is connected with one end of a resistor R102, the other end of the resistor R102 is connected with the collector of a transistor Q116, the emitting electrode of the triode Q116 is connected with one end of a base electrode connecting resistor R502, the other end of the resistor R502 is connected with a pin 17 of the MCU chip U1, the storage battery undervoltage lamp circuit comprises a light emitting diode HL3 with the anode connected with the fault power supply voltage, the cathode of the light emitting diode HL3 is connected with one end of a resistor R103, the other end of the resistor R103 is connected with the collector electrode of the triode Q117, the emitting electrode of the triode Q117 is connected with one end of a base electrode connecting resistor R503, the other end of the resistor R503 is connected with a pin 16 of the MCU chip U1, the charge lamp circuit comprises a resistor R27 with one end connected with the charge voltage, the other end of the resistor R27 is connected with the anode of the light emitting diode HL4, the cathode of the light emitting diode HL4 is grounded, the normal operation lamp circuit comprises a light emitting diode HL5 with the anode connected with the charge voltage, and the cathode of the light emitting diode HL5 is connected with one end of a resistor R17, the other end of the resistor R17 is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222172332.0U CN218633375U (en) | 2022-08-18 | 2022-08-18 | Protection circuit of storage battery in controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222172332.0U CN218633375U (en) | 2022-08-18 | 2022-08-18 | Protection circuit of storage battery in controller |
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| Publication Number | Publication Date |
|---|---|
| CN218633375U true CN218633375U (en) | 2023-03-14 |
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| CN202222172332.0U Active CN218633375U (en) | 2022-08-18 | 2022-08-18 | Protection circuit of storage battery in controller |
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2022
- 2022-08-18 CN CN202222172332.0U patent/CN218633375U/en active Active
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