CN217022203U - Intelligent charging control circuit of electric vehicle - Google Patents
Intelligent charging control circuit of electric vehicle Download PDFInfo
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- CN217022203U CN217022203U CN202220693810.XU CN202220693810U CN217022203U CN 217022203 U CN217022203 U CN 217022203U CN 202220693810 U CN202220693810 U CN 202220693810U CN 217022203 U CN217022203 U CN 217022203U
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Abstract
The application relates to an intelligent charging control circuit of an electric vehicle, which relates to the technical field of power management and comprises a power supply module, a metering module and a control module, wherein the power supply module is used for outputting direct current voltage stabilization to the metering module and the control module; the metering module is used for responding to the charging parameters of the storage battery and outputting square wave signals; and the control module is used for responding to the square wave signal and controlling the power supply module to cut off the power of the storage battery. This application has the effect that improves battery life.
Description
Technical Field
The application relates to the technical field of power management, in particular to an intelligent charging control circuit for an electric vehicle.
Background
With the popularization of electric vehicles, the service life of the electric vehicles is receiving much attention from people. The storage battery is used as a main driving source for the running of the electric vehicle, and the service life of the whole electric vehicle is influenced by the loss of the storage battery.
In the related art, an electric vehicle or a battery is usually directly charged with 220V ac voltage. After charging is completed, most chargers cannot directly cut off charging current, so that the storage battery is always in a charged state, and the service life of the electric vehicle is damaged due to overcharge of the storage battery.
SUMMERY OF THE UTILITY MODEL
In order to improve the impaired problem of life that battery overcharge can lead to the electric motor car, this application provides an electric motor car intelligent charging control circuit.
The application provides a pair of electric motor car intelligent charging control circuit adopts following technical scheme:
an intelligent charging control circuit of an electric vehicle comprises a power supply module, a metering module and a control module, wherein the power supply module is used for outputting direct current voltage stabilization to the metering module and the control module;
the metering module is used for responding to the charging parameters of the storage battery and outputting square wave signals;
and the control module is used for responding to the square wave signal and controlling the power supply module to cut off the power of the storage battery.
By adopting the technical scheme, when the storage battery of the electric vehicle is charged, the metering module converts the charging parameters into square wave signals and outputs the square wave signals to the control module. When the storage battery of the electric vehicle is charged, the control module controls the power supply module to stop supplying power to the storage battery. The overcharge condition of the storage battery is reduced, and the service life of the storage battery is effectively prolonged.
Optionally, the power supply module includes a voltage transformation sub-module and a voltage stabilization output sub-module;
the transformer submodule is used for responding to the alternating voltage of an external power supply and outputting direct-current high voltage;
and the voltage stabilization output submodule is used for responding to the direct current high voltage and outputting direct current stabilized voltage to the metering module and the control module.
By adopting the technical scheme, the transformation submodule converts the alternating voltage of the external power supply into the direct-current high voltage, and then the voltage of the direct-current high voltage is reduced through the voltage stabilization output submodule until the direct-current voltage can be output to the metering module and the control module, so that the voltage acquired by the metering module and the control module is stable, and the condition that the metering module and the control module are damaged due to overhigh or overlow voltage is effectively reduced.
Optionally, the transformer sub-module includes resistors R1, R2, R3, R4, a diode D4, an inductor L4, a polar capacitor C4, a capacitor C4 and a single chip microcomputer U4, one end of the resistor R4 is connected with the fire wire L, the other end of the resistor R4 is connected with the anode of the diode D4, the cathode of the diode D4 is connected with one end of the inductor L4, the other end of the inductor L4 is connected with the C end of the single chip microcomputer U4, the connection point of the diode D4 and the inductor L4 is connected with the anode of the polar capacitor C4, the connection point of the cathode of the polar capacitor C4 and the zero line N is grounded, the connection point of the inductor L4 and the zero line N is connected with the anode of the polar capacitor C4, the other end of the resistor R4 is connected with one end of the single chip microcomputer R4, the other end of the resistor R4 is connected with the one end of the single chip microcomputer U4, the resistor R4 is connected with the VDD of the single chip microcomputer U4, the circuit comprises a single chip microcomputer U1, a CS end of the single chip microcomputer U1 is connected with one end of a resistor R4, the other end of the resistor R4 is connected with a GND end of the single chip microcomputer U1, a connection point of the CS end and the GND end of the single chip microcomputer U1 is connected with one end of a capacitor C3, a connection point of a VDD end of the single chip microcomputer U1 and a resistor R3 is connected with the other end of the capacitor C3, and a connection point of the GND end of the single chip microcomputer U1 and a capacitor C3, and the connection points are used for outputting direct-current high voltage.
Through adopting above-mentioned technical scheme, resistance R1 and inductance L1 play the effect of partial pressure, reduce the alternating voltage who inputs to singlechip U1, and polarity electric capacity C1, C2 play the effect of filtering to the alternating voltage who realizes inputing to singlechip U1 is more stable, and singlechip U1 can convert alternating voltage to direct current high pressure, through the outage of direct current voltage control battery, and is more accurate.
Optionally, the voltage-stabilizing output submodule includes capacitors C4, C5, C6, polarity capacitors C7, C8, diodes D2, D3, an inductor L2 and a resistor R5, a connection point of one end of the inductor L2 and an anode of a diode D2 is used for responding to a high direct current voltage, a connection point of a cathode of the diode D2 and a neutral line N is grounded, the other end of the inductor L2 is connected with an anode of a diode D3, a connection point of a cathode of the diode D3 and an FB end of a single chip U1 is connected with one end of a capacitor C4, the other end of the capacitor C4 is connected with an anode of a diode D2, a connection point of the diode D3 and the inductor L2 is connected with an anode of a polarity capacitor C7, a cathode of the polarity capacitor C7 is connected with a neutral line N, an anode of the polarity capacitor C7 is connected with one end of a capacitor C5, the other end of the capacitor C5 is connected with a neutral line N, a connection point of the capacitor C5 and a connection point of a polarity capacitor C7 and one end of a resistor R5, and the resistor R5 is connected with the resistor R5, the connection point of the resistor R5 and the capacitor C5 is connected with the positive electrode of a polar capacitor C8, the negative electrode of the capacitor C8 is connected with a zero line N, the connection point of the capacitor C8 and the resistor R5 is connected with one end of the capacitor C6, the connection point of the other end of the capacitor C6 and the zero line N is grounded, and the connection point of the capacitor C6 and the polar capacitor C8 is used for outputting direct current voltage stabilization to the metering module and the control module.
By adopting the technical scheme, the inductor L2 has the function of voltage division, and the resistor R5 has the function of current limiting so as to meet the rated current of the metering module and the control module, and further improve the accuracy of controlling the metering module and the control module.
Optionally, the power supply module further includes a filtering submodule, the filtering submodule includes a capacitor C9 and a resistor R6, a capacitor C9 is connected in a cross-connection manner between the live wire L and the zero wire N, and a resistor R6 is connected in a cross-connection manner between the live wire L and the zero wire N.
By adopting the technical scheme, the capacitor C9 plays a role in filtering, so that the voltage output to the resistor R1 is more stable. Through setting up resistance R6, can absorb the voltage sudden change, play the effect of protection to singlechip U1.
Optionally, the control module includes a signal output sub-module and a switch sub-module;
the signal output submodule is used for responding to the square wave signal and outputting a control signal;
and the switch submodule is used for responding to the control signal so as to disconnect the live wire L from the storage battery.
By adopting the technical scheme, the signal output submodule receives the square wave signal and converts the square wave signal into the control signal, and the switch submodule can control whether the storage battery is disconnected with the live wire L or not according to the control signal so as to realize the function of overcharge protection of the storage battery.
Optionally, the signal output submodule includes a single chip microcomputer U2, a capacitor C10, a resistor R7, a resistor R8, a switch SB and a diode D4, a VDD terminal connection point of one end of the capacitor C10 and the single chip microcomputer U2 is used for responding to a direct current voltage stabilization, the other end of the capacitor C10 is grounded, a P1.4 terminal of the single chip microcomputer U2 is used for responding to a square wave signal, a VSS terminal of the single chip microcomputer U2 is grounded, one end of the resistor R7 is used for responding to a direct current voltage stabilization, the other end of the resistor R7 is connected with an anode of the diode D4, a cathode of the diode D4 is connected with a P3.0 terminal of the single chip microcomputer U2, a P3.1 terminal of the single chip microcomputer U2 is connected with one end of the resistor R8, the other end of the resistor R8 is connected with one end of the switch SB, the other end of the switch SB is grounded, and a P1.5 terminal of the single chip microcomputer U2 is used for outputting a control signal.
By adopting the technical scheme, the single chip microcomputer U2 acquires the square wave signal and outputs a corresponding control signal. The singlechip U2 has the function of timing, and the technical staff can preset the output control signal for 5 minutes or 30 minutes after the storage battery is fully charged, so that the power-off of the storage battery is controlled more accurately.
Optionally, the switch submodule includes a relay K1, a diode D5, a resistor R9, a diode R10, a triode Q1, and a socket XS1, where a cathode of the diode D5 is used to respond to a direct current voltage stabilization, an anode of the diode D5 is connected to a collector of the triode Q1, a base of the triode Q1 is connected to one end of the resistor R9, another end of the resistor R9 is used to respond to a control signal, an emitter of the triode Q1 is grounded, one end of the socket XS1 is connected to one end of the resistor R10, another end of the socket XS1 is connected to one end of a normally open contact S1 of the relay K1, another end of the normally open contact S1 of the relay K1 is connected to a live wire L, another end of the resistor R10 is grounded, and a coil of the relay K1 is connected to two ends of the diode D5 in parallel.
By adopting the technical scheme, the wiring terminal of the storage battery is connected into the socket, and when the triode Q1 obtains a high level, a corresponding path is formed, so that the normally open contact S1 of the K1 is attracted, and the live wire L can supply power to the storage battery. When the triode Q1 obtains low level, the normally open contact S1 of K1 is disconnected, and the live wire L and the storage battery are disconnected, so that the accuracy of controlling the power supply to the storage battery can be realized.
Optionally, the metering module comprises resistors R11, R12, R13, R14, R15, R16, R17, a capacitor C11, C12, C13, C14 and a single chip microcomputer U3, a connection point of the socket XS 3 and the resistor R3 is connected with one end of the resistor R3, the other end of the resistor R3 is connected with the end of V1 3 of the single chip microcomputer U3, the other end of the resistor R3 is connected with one end of the resistor R3, the other end of the resistor R3 is connected with the end of V1 3 of the single chip microcomputer U3, the capacitors C3 and C3 are connected in series, the other end of the capacitor C3 is connected with a connection point of the resistor R3 and the single chip microcomputer U3, the other end of the capacitor C3 is connected with the ground, the connection point of the resistor R3, R3 and R3, the other end of the resistor R3 is connected in series is connected with the single chip microcomputer U3, the resistor R3 and the one end of the single chip microcomputer 3, the resistor R3 are connected with the resistor R3, the resistance 3, the other end of the resistor R3 and the resistor R3 are connected in series, the one end of the single chip microcomputer 3, the resistor R3 and the single chip microcomputer 3 are connected with the resistor R3, the resistance 3 is connected with the resistance 3, the resistance is connected with the resistance 3, the resistance 3 is connected with the resistance 3 and the resistance R3, the resistance 3 is connected with the resistance and the resistance 3, the resistance is connected with the resistance R3, the resistance is connected with the resistance 3, the resistance and the resistance 3, the resistance is connected in series, the resistance is connected with the resistance 3, the resistance is connected with the resistance and the resistance R3, the resistance is connected with the resistance and the resistance R3, the resistance and the resistance is connected with the resistance of the resistance and the resistance R3, the resistance is connected with the resistance 3, the resistance of the resistance 3, the resistance is connected with the resistance 3, the resistance is connected with the resistance of the resistance R3, the resistance of the resistance and the resistance of the resistance 3, the resistance of the resistance 3 is connected with the resistance 3, the resistance and the resistance 3, the resistance is connected in series, the resistance is connected with the resistance 3, the resistance and the resistance 3, the other end of the resistor R17 is grounded, the capacitor C13 is connected in parallel to two ends of the resistor R17, the VDD end of the single chip microcomputer U3 is used for responding to direct-current voltage stabilization, the GND end of the single chip microcomputer U3 is grounded, and the capacitor C14 is connected between the VDD end and the GND end of the single chip microcomputer U3 in a bridging mode.
Through adopting above-mentioned technical scheme, the measurement module can be through voltage and the electric current at collection resistance R10 both ends, and singlechip U3 can judge the charging parameter of battery according to the charging parameter at resistance R10 both ends to the realization is to the accurate monitoring of battery charged state.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when the storage battery of the electric vehicle is charged, the metering module converts the charging parameters into square wave signals and outputs the square wave signals to the control module. When the storage battery of the electric vehicle is charged, the control module controls the power supply module to stop supplying power to the storage battery. The overcharge condition of the storage battery is reduced, and the service life of the storage battery is effectively prolonged;
2. the voltage transformation submodule converts alternating-current voltage of an external power supply into direct-current high voltage, and then the voltage of the direct-current high voltage is reduced through the voltage stabilization output submodule until the direct-current voltage which can be output to the metering module and the control module is stabilized, so that the voltage acquired by the metering module and the control module is stable, and the condition that the control circuit is damaged due to overhigh or overlow voltage of the metering module and the control module is effectively reduced;
3. resistance R1 and inductance L1 play the effect of partial pressure, reduce the alternating voltage who inputs to singlechip U1, and polarity electric capacity C1, C2 play the effect of filtering to the alternating voltage who realizes inputing to singlechip U1 is more stable, and singlechip U1 can convert alternating voltage into direct current high pressure, through the outage of direct current voltage control battery, and is more accurate.
Drawings
Fig. 1 is a block flow diagram of an electric vehicle intelligent charging control circuit according to an embodiment of the present application.
Fig. 2 is a circuit diagram of a transformer submodule and a filter submodule according to an embodiment of the present application.
Fig. 3 is a circuit diagram of a regulated output sub-module according to an embodiment of the present application.
Fig. 4 is a circuit diagram of a sub-module embodying signal output in accordance with an embodiment of the present application.
Fig. 5 is a circuit diagram of a sub-module embodying a switch in an embodiment of the present application.
FIG. 6 is a circuit diagram of a metering module embodied in an embodiment of the present application.
Description of reference numerals: 1. a power supply module; 11. a voltage transformation submodule; 12. a voltage stabilization output submodule; 13. a filtering submodule; 2. a metering module; 3. a control module; 31. a signal output submodule; 32. and a switch submodule.
Detailed Description
The present application is described in further detail below with reference to figures 1-6.
The embodiment of the application discloses electric motor car intelligent charging control circuit. Referring to fig. 1, an intelligent charging control circuit for an electric vehicle includes a power supply module 1, a metering module 2, and a control module 3. The power supply module 1 is used for outputting direct current voltage stabilization to the metering module 2 and the control module 3. And the metering module 2 is used for responding to the charging parameters of the storage battery and outputting square wave signals. And the control module 3 is used for responding to the square wave signal and controlling the power supply module 1 to cut off the power supply to the storage battery.
Referring to fig. 1, the power supply module 1 includes a filtering submodule 13, a transforming submodule 11 and a voltage-stabilizing output submodule 12, where the transforming submodule 11 is configured to respond to an ac voltage of an external power supply and output a dc high voltage to the voltage-stabilizing output submodule 12, and the ac voltage may be a 315V ac voltage boosted by a 220V ac voltage. And the voltage stabilization output submodule 12 is used for responding to the direct-current high voltage output by the voltage transformation submodule 11 and outputting direct-current stabilized voltage to the metering module 2 and the control module 3, and the direct-current stabilized voltage can be 5V. The filtering submodule 13 is configured to filter the ac voltage output to the voltage transforming submodule 11, so as to improve stability of the output ac voltage.
Referring to fig. 2, the filtering submodule 13 includes a capacitor C9 and a resistor R6, one end of the capacitor C9 is connected to the live line L, a connection point between the other end of the capacitor C9 and the neutral line N is grounded, and the capacitor C9 plays a role in filtering, so that the output ac voltage is more stable. The connecting point of the live wire L and the capacitor C9 is connected with one end of the resistor R6, the connecting point of the zero wire N and the capacitor C9 is connected with the other end of the resistor R6, and the resistor R6 can be a voltage dependent resistor, so that on one hand, voltage sudden change can be absorbed, and on the other hand, when the alternating voltage is too high, the resistance value of the resistor R6 is increased, and the purpose of protecting the control circuit is achieved.
Referring to fig. 2, the transformer submodule 11 includes resistors R1, R2, R3, R4, a diode D1, an inductor L1, polar capacitors C1, C2, a capacitor C3, and a single chip microcomputer U1, where the model of the single chip microcomputer U1 may be OB 2222. The connecting point of the resistor R6 and the live wire L is connected with one end of a resistor R1, the other end of the resistor R1 is connected with the anode of a diode D1, the cathode of the diode D1 is connected with one end of an inductor L1, the other end of the inductor L1 is connected with the C end of a single chip microcomputer U1, and the four C ends of the single chip microcomputer U1 are connected with each other. The connection point of the diode D1 and the inductor L1 is connected with the anode of the polar capacitor C1, and the connection point of the cathode of the polar capacitor C1 and the zero line N is grounded. The connection point of the inductor L1 and the single chip microcomputer U1 is connected with the positive electrode of the polar capacitor C2, and the connection point of the negative electrode of the polar capacitor C2 and the zero line N is grounded. The polarity capacitors C1 and C2 are arranged to filter the alternating voltage again so as to further improve the stability of the alternating voltage. The connection point of the single chip microcomputer U1 and the inductor L1 is connected with one end of a resistor R2, the other end of the resistor R2 is connected with one end of a resistor R3, the other end of the resistor R3 is connected with the VDD end of the single chip microcomputer U1, the CS end of the single chip microcomputer U1 is connected with one end of a resistor R4, the other end of the resistor R4 is connected with the GND end of the single chip microcomputer U1, the connection point of the CS end of the single chip microcomputer U1 and the GND end is connected with one end of a capacitor C3, the connection point of the VDD end of the single chip microcomputer U1 and the resistor R3 is connected with the other end of the capacitor C3, and the connection point of the GND end of the single chip microcomputer U1 and the capacitor C3 are used for outputting direct current high voltage.
Referring to fig. 2 and 3, the voltage regulation output submodule 12 includes capacitors C4, C5, C6, polar capacitors C7, C8, diodes D2, D3, an inductor L2, and a resistor R5, and a connection point between one end of the inductor L2 and an anode of the diode D2 is used for being connected with a connection point between a GND end of the single chip microcomputer U1 and the capacitor C3. The connection point of the cathode of the diode D2 and the zero line N is grounded, the other end of the inductor L2 is connected with the anode of the diode D3, the cathode of the diode D3 and the FB end connection point of the singlechip U1 are connected with one end of a capacitor C4, the other end of the capacitor C4 is connected with the anode of a diode D2, the connection point of the diode D3 and the inductor L2 is connected with the anode of a polar capacitor C7, the cathode of a polar capacitor C7 is connected with the zero line N, the anode of a polar capacitor C7 is connected with one end of a capacitor C7, the other end of the capacitor C7 is connected with one end of a resistor R7, the other end of the resistor R7 is connected with the zero line N, the connection point of the resistor R7 and the capacitor C7 is connected with the anode of the polar capacitor C7, the cathode of the capacitor C7 is connected with the zero line N, the connection point of the capacitor C7 and the ground, the connection point of the other end of the capacitor C7 is connected with the zero line N7, for outputting a dc regulated voltage to the metering module 2 and the control module 3.
Referring to fig. 1, the control module 3 includes a signal output submodule 31 and a switch submodule 32, and the signal output submodule 31 is configured to output a control signal to the switch submodule 32 in response to the square wave signal output by the metering module 2. And a switch submodule 32 for responding to the control signal to disconnect the live line L from the battery.
Referring to fig. 3 and 4, the signal output submodule 31 includes a single chip microcomputer U2, a capacitor C10, resistors R7, R8, a switch SB, and a diode D4, and the model of the single chip microcomputer U2 may be CSU8RF 3111. One end of the capacitor C10 is connected with a VDD end connection point of the singlechip U2 and is used for being connected with a connection point of the capacitor C6 and the polar capacitor C8, and the other end of the capacitor C10 is grounded. And the P1.4 end of the single chip microcomputer U2 is used for responding to the square wave signal, and the VSS end of the single chip microcomputer U2 is grounded. One end of the resistor R7 is connected with the connection point of the capacitor C6 and the polar capacitor C8. The other end of the resistor R7 is connected with the anode of a diode D4, the cathode of a diode D4 is connected with the P3.0 end of the singlechip U2, and a diode D4 is a light-emitting diode and plays a role of an indicator light. The P3.1 end of the single chip microcomputer U2 is connected with one end of a resistor R8, the other end of the resistor R8 is connected with one end of a switch SB, the other end of the switch SB is grounded, and the P1.5 end of the single chip microcomputer U2 is used for outputting a control signal.
Referring to fig. 5, the switch submodule 32 includes a relay K1, a diode D5, a resistor R9, a resistor R10, a transistor Q1, and a socket XS1, wherein a cathode of the diode D5 is connected to a connection point of a capacitor C6 and a polarity capacitor C8, and an anode of the diode D5 is connected to a collector of the transistor Q1. One end of the resistor R9 is connected with the base electrode of the triode Q1, and the other end of the resistor R9 is used for being connected with the P1.5 end of the singlechip U2. The emitting electrode of the triode Q1 is grounded, one end of a socket XS1 is connected with one end of a resistor R10, the other end of the socket XS1 is connected with one end of a normally open contact S1 of a relay K1, the other end of a normally open contact S1 of the relay K1 is connected with a live wire L, the other end of the resistor R10 is grounded, and a coil of the relay K1 is connected with two ends of a diode D5 in parallel. The resistor R10 is used as a sampling resistor, and the metering module 2 can obtain corresponding charging parameters of the storage battery through current signals at two ends of the resistor R10. Meanwhile, the switch submodule 32 further includes a socket XS2, one end of the socket XS2 is connected to the live line L, and a connection point of the resistor R10 and the socket XS2 is grounded. A battery plug may also be connected to socket XS2 to allow charging of the battery.
When the intelligent charging system works, a plug of a storage battery charger is inserted into the socket XS1, the switch SB is closed, charging current flows into the storage battery and the resistor R10 from the live wire L, the metering module 2 collects electric signals at two ends of the resistor R10, and the electric signals are processed by the metering module 2 and converted into square wave signals to be output to the single chip microcomputer U2. When the single chip microcomputer U2 receives the square wave signal, the built-in reference value is used for carrying out comparison operation, and the charging state of the electric vehicle at the moment is judged. When the storage battery is in a normal charging state, the base electrode of the triode Q1 obtains a high level signal, the triode Q1 is conducted, the normally open contact S1 of the relay K1 is closed, and the single chip microcomputer U2 times. When the timer built in the single chip microcomputer U2 reaches the preset charging time, namely the storage battery is full and needs to be powered off, the base of the triode Q1 obtains low level, the triode Q1 is disconnected, the normally open contact S1 of the relay K1 is opened, and correspondingly, the live wire L stops supplying power to the storage battery.
Referring to fig. 6, the metering module 2 includes resistors R11, R12, R13, R14, R15, R16, R17, capacitors C11, C12, C13, C14, and a single chip microcomputer U3, where the model of the single chip microcomputer U3 may be HLW 8012. The connecting point of socket XS and resistance R is connected with resistance R one end, the resistance R other end is connected with singlechip U's V1 end, the resistance R other end is connected with resistance R one end, the resistance R other end is connected with singlechip U's V1 end, series connection's electric capacity C, the electric capacity C other end is connected in resistance R and singlechip U's tie point, electric capacity C and electric capacity C's tie point ground connection, series connection's resistance R, resistance R's the other end is connected in live wire L, resistance R's the other end is connected in singlechip U's V2 end, singlechip U and resistance R's tie point is connected with resistance R one end, resistance R other end ground connection, electric capacity C connects in parallel in resistance R's both ends. And the VDD end of the singlechip U3 is used for being connected with a connection point of the capacitor C6 and the polar capacitor C8. The GND end of the single-chip microcomputer U3 is grounded, and a capacitor C14 is connected between the VDD end and the GND end of the single-chip microcomputer U3 in a bridging mode.
When the charging device works, the single chip microcomputer U2 judges whether the charging of the storage battery is finished according to the obtained square wave signal output by the single chip microcomputer U3. When the single-chip microcomputer U2 identifies that the square wave signal exceeds the preset overload threshold value, the single-chip microcomputer U2 immediately executes the action of turning off the relay K1, and the light-emitting diode D4 flickers to remind a technician. After the single chip microcomputer U2 finishes the action of switching off the relay, the diode D4 is extinguished, enters a dormant state, waits for a user to press the switch SB, and starts to charge again.
The implementation principle of the intelligent charging control circuit of the electric vehicle in the embodiment of the application is as follows: when the user needs to charge the battery, the plug of the battery is connected to the socket XS1 and the switch SB is closed. The single-chip microcomputer U3 collects electric signals at two ends of the resistor R10, the electric signals are processed by the single-chip microcomputer U3 to obtain active power (namely square wave signals) of the resistor R10, the single-chip microcomputer U3 outputs the square wave signals to the single-chip microcomputer U2, the single-chip microcomputer U2 processes the square wave signals and outputs high and low level signals (namely control signals) to the triode Q1, when the storage battery is in a normal charging state, the base of the triode Q1 obtains the high level signals, the triode Q1 is conducted, a normally open contact S1 of the relay K1 is closed, and the single-chip microcomputer U2 times. When the timer built in the single chip microcomputer U2 reaches the preset charging time, namely the storage battery is full and needs to be powered off, the base of the triode Q1 obtains low level, the triode Q1 is disconnected, the normally open contact S1 of the relay K1 is opened, correspondingly, the live wire L stops supplying power to the storage battery, and the condition that the service life of the storage battery is attenuated due to overcharging can be reduced.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides an electric motor car intelligence charging control circuit which characterized in that: the device comprises a power supply module (1), a metering module (2) and a control module (3), wherein the power supply module (1) is used for outputting direct current voltage stabilization to the metering module (2) and the control module (3);
the metering module (2) is used for responding to the charging parameters of the storage battery and outputting square wave signals;
the control module (3) is used for responding to the square wave signal and controlling the power supply module (1) to cut off the power supply to the storage battery;
the power supply module (1) comprises a transformation submodule (11) and a voltage-stabilizing output submodule (12);
the voltage transformation submodule (11) is used for responding to the alternating voltage of an external power supply and outputting direct-current high voltage;
and the voltage stabilization output submodule (12) is used for responding to the direct current high voltage and outputting direct current stabilized voltage to the metering module (2) and the control module (3).
2. The intelligent charging control circuit of the electric vehicle as claimed in claim 1, wherein: the transformer sub-module (11) comprises resistors R1, R2, R3, R4, a diode D4, an inductor L4, a polar capacitor C4, a capacitor C4 and a single chip microcomputer U4, one end of the resistor R4 is connected with a live wire L, the other end of the resistor R4 is connected with an anode of the diode D4, a cathode of the diode D4 is connected with one end of the inductor L4, the other end of the inductor L4 is connected with a C end of the single chip microcomputer U4, a connection point of the diode D4 and the inductor L4 is connected with an anode of the polar capacitor C4, a connection point of a cathode of the polar capacitor C4 and the zero line N is grounded, a connection point of the inductor L4 and the zero line N is connected with the ground, a connection point of the inductor L4 and the single chip microcomputer U4 is connected with an anode of the polar capacitor C4, a connection point of the zero line U4 and the zero line U4 is connected with one end of the resistor R4, the other end of the resistor R4 is connected with one end of the single chip microcomputer 4, the resistor R4 is connected with the other end of the resistor R4, the other end of the single chip microcomputer U4 is connected with the VDD 4 is connected with the single chip microcomputer U4, the circuit comprises a single chip microcomputer U1, a CS end of the single chip microcomputer U1 is connected with one end of a resistor R4, the other end of the resistor R4 is connected with a GND end of the single chip microcomputer U1, a connection point of the CS end and the GND end of the single chip microcomputer U1 is connected with one end of a capacitor C3, a connection point of a VDD end of the single chip microcomputer U1 and a resistor R3 is connected with the other end of the capacitor C3, and a connection point of the GND end of the single chip microcomputer U1 and a capacitor C3, and the connection points are used for outputting direct-current high voltage.
3. The intelligent charging control circuit of the electric vehicle as claimed in claim 2, wherein: the voltage-stabilizing output sub-module (12) comprises a capacitor C4, a capacitor C5, a capacitor C6, a polar capacitor C7, a capacitor C8, a diode D2, a diode D3, an inductor L2 and a resistor R5, a connection point of one end of the inductor L2 and an anode of a diode D2 is used for responding to direct-current high voltage, a connection point of a cathode of the diode D2 and a zero line N is grounded, the other end of the inductor L2 is connected with an anode of a diode D2, a connection point of a cathode of the diode D2 and an FB end of a singlechip U2 is connected with one end of the capacitor C2, the other end of the capacitor C2 is connected with an anode of the diode D2, a connection point of the diode D2 and the inductor L2 is connected with an anode of the polar capacitor C2, a cathode of the polar capacitor C2 is connected with the zero line N, a connection point of the capacitor C2 and a connection point of the resistor R2 is connected with one end of the zero line N2, and the other end of the resistor R2 is connected with the zero line N2, the connecting point of the resistor R5 and the capacitor C5 is connected with the positive electrode of the polar capacitor C8, the negative electrode of the capacitor C8 is connected with the zero line N, the connecting point of the capacitor C8 and the resistor R5 is connected with one end of the capacitor C6, the connecting point of the other end of the capacitor C6 and the zero line N is grounded, and the connecting point of the capacitor C6 and the polar capacitor C8 is used for outputting direct current voltage stabilization to the metering module (2) and the control module (3).
4. The intelligent charging control circuit of the electric vehicle as claimed in claim 2, wherein: the power supply module (1) further comprises a filtering submodule (13), the filtering submodule (13) comprises a capacitor C9 and a resistor R6, a capacitor C9 is connected between the live wire L and the zero line N in a cross-connection mode, and a resistor R6 is connected between the live wire L and the zero line N in a cross-connection mode.
5. The intelligent charging control circuit of the electric vehicle as claimed in claim 1, wherein: the control module (3) comprises a signal output submodule (31) and a switch submodule (32);
the signal output submodule (31) is used for responding to the square wave signal and outputting a control signal;
the switch submodule (32) is used for responding to a control signal so as to disconnect the live wire L from the storage battery.
6. The intelligent charging control circuit of the electric vehicle as claimed in claim 5, wherein: the signal output submodule (31) comprises a single chip microcomputer U2, a capacitor C10, a resistor R7, a R8, a switch SB and a diode D4, a VDD end connecting point of one end of a capacitor C10 and the single chip microcomputer U2 is used for responding to direct current voltage stabilization, the other end of the capacitor C10 is grounded, a P1.4 end of the single chip microcomputer U2 is used for responding to square wave signals, a VSS end of the single chip microcomputer U2 is grounded, one end of the resistor R7 is used for responding to direct current voltage stabilization, the other end of the resistor R7 is connected with an anode of a diode D4, a cathode of the diode D4 is connected with a P3.0 end of the single chip microcomputer U2, a P3.1 end of the single chip microcomputer U2 is connected with one end of the resistor R8, the other end of the resistor R8 is connected with one end of the switch SB, the other end of the switch SB is grounded, and a P1.5 end of the single chip microcomputer U2 is used for outputting control signals.
7. The intelligent charging control circuit of the electric vehicle as claimed in claim 5, wherein: the switch submodule (32) comprises a relay K1, a diode D5, a resistor R9, a diode R10, a triode Q1 and a socket XS1, wherein the cathode of the diode D5 is used for responding to direct current voltage stabilization, the anode of the diode D5 is connected with the collector of the triode Q1, the base of the triode Q1 is connected with one end of a resistor R9, the other end of the resistor R9 is used for responding to a control signal, the emitter of the triode Q1 is grounded, one end of the socket XS1 is connected with one end of a resistor R10, the other end of the socket XS1 is connected with one end of a normally-open contact S1 of the relay K1, the other end of the normally-open contact S1 of the relay K1 is connected with a live wire L, the other end of the resistor R10 is grounded, and coils of the relay K1 are connected with two ends of the diode D5 in parallel.
8. The intelligent charging control circuit of the electric vehicle as claimed in claim 7, wherein: the metering module (2) comprises resistors R11, R12, R13, R14, R15, R16, R17, a capacitor C11, C12, C13, C14 and a single chip microcomputer U3, a connecting point of the socket XS 3 and the resistor R3 is connected with one end of the resistor R3, the other end of the resistor R3 is connected with the end of V1 3 of the single chip microcomputer U3, the other end of the resistor R3 is connected with one end of the resistor R3, the other end of the resistor R3 is connected with the end of V1 3 of the single chip microcomputer U3, the capacitors C3 and C3 are connected in series, the other end of the capacitor C3 is connected with a connecting point of the resistor R3 and the single chip microcomputer U3, the other end of the capacitor C3 is connected with the connecting point of the resistor R3 and the single chip microcomputer U3, the connecting point of the resistor C3 and the resistor C3 is connected in series, the resistor R3, R3 and R3 are connected in series, the other end of the single chip microcomputer U3, the resistor 3 and the resistor 3 are connected with the ground, the resistor R3 and the resistor 3 are connected with one end of the single chip microcomputer U3, the resistor R3, the other end of the resistor R3 and the resistor 3 are connected in series, the resistor R3 and the resistor 3 are connected with the resistor 3 and the resistor R3, the resistor R3 are connected with the resistor 3 and the resistor R3 are connected with the resistor 3, the resistor R3 and the resistor 3, the resistor R3 are connected in series, the resistor 3 and the resistor 3 are connected with the resistor R3, the resistance is connected with the other end of the resistance is connected with the resistor R3, the resistance is connected with the resistance and the resistance is connected with the resistance and the resistance of the resistance and the resistance is connected with the resistance of the resistance 3, the resistance of the resistance is connected with the resistance 3, the resistance of the resistance 3, the resistance of the resistance 3, the resistance is connected with the resistance 3, the resistance is connected in series, the resistance is connected with the resistance 3, the resistance is connected with the resistance of the resistance, the other end of the resistor R17 is grounded, the capacitor C13 is connected in parallel to two ends of the resistor R17, the VDD end of the single chip microcomputer U3 is used for responding to direct-current voltage stabilization, the GND end of the single chip microcomputer U3 is grounded, and the capacitor C14 is connected between the VDD end and the GND end of the single chip microcomputer U3 in a bridging mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220693810.XU CN217022203U (en) | 2022-03-28 | 2022-03-28 | Intelligent charging control circuit of electric vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220693810.XU CN217022203U (en) | 2022-03-28 | 2022-03-28 | Intelligent charging control circuit of electric vehicle |
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| CN217022203U true CN217022203U (en) | 2022-07-22 |
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| CN202220693810.XU Active CN217022203U (en) | 2022-03-28 | 2022-03-28 | Intelligent charging control circuit of electric vehicle |
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| CN (1) | CN217022203U (en) |
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