CN116039384B - New energy high-power charging circuit - Google Patents
New energy high-power charging circuit Download PDFInfo
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- CN116039384B CN116039384B CN202310342836.9A CN202310342836A CN116039384B CN 116039384 B CN116039384 B CN 116039384B CN 202310342836 A CN202310342836 A CN 202310342836A CN 116039384 B CN116039384 B CN 116039384B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/04—Cutting off the power supply under fault conditions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0046—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electric energy storage systems, e.g. batteries or capacitors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/12—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries responding to state of charge [SoC]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
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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
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The invention discloses a new energy high-power charging circuit, which relates to the field of charging, and comprises: the power supply module is used for outputting two direct-current voltages, supplying a battery charging module with larger voltage, and supplying a charging control module with smaller voltage and a low-voltage power supply module; compared with the prior art, the invention has the beneficial effects that: the anti-danger charging module is arranged, so that charging is prevented when people exist in the new energy automobile, voice prompt is performed, and life safety of people in the automobile is prevented from being threatened when charging fails; the anti-high-temperature charging module is arranged, so that the situation that an automobile is parked in the open air, the battery is charged in a higher temperature state under the irradiation of sunlight, the service life of the battery is influenced, and the charging is automatically recovered when the temperature is recovered to be normal is avoided; the high-temperature-resistant charging module and the outage working module are used for disconnecting a charging loop of the battery charging module through the outage working module, so that the circuit volume is saved.
Description
Technical Field
The invention relates to the field of charging, in particular to a new energy high-power charging circuit.
Background
The existing new energy automobile is driven by a battery, the battery needs to be charged after the electric quantity of the battery is insufficient, and the battery capacity is large, and high-power charging is needed, so that charging voltage and charging current are large, and when a user is in the automobile during charging, the life safety of the user can be threatened when the charging failure occurs, and improvement is needed.
Disclosure of Invention
The invention aims to provide a new energy high-power charging circuit so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a new energy high power charging circuit comprising:
the power supply module is used for outputting two direct-current voltages, supplying a battery charging module with larger voltage, and supplying a charging control module with smaller voltage and a low-voltage power supply module;
the battery charging module is used for charging the battery and storing electric energy;
the battery voltage detection module is used for detecting the battery voltage, emitting light to indicate when the battery voltage reaches a threshold value, and disconnecting a charging loop of the battery charging module;
the charging control module is used for controlling whether the battery charging module is charged or not and the magnitude of charging voltage;
the low-voltage power supply module is used for generating stable voltage and supplying the stable voltage to the high-temperature charging prevention module, the dangerous charging prevention module and the power-off working module;
the high-temperature-resistant charging module is used for detecting the temperature of the battery charging environment, and driving the power-off working module to work when the temperature stores a threshold value;
the dangerous charging prevention module is used for detecting whether a person exists in the new energy automobile during charging, and driving the power-off working module to work when the person exists;
the power-off working module is used for disconnecting a charging loop of the battery charging module;
the first output end of the power supply module is connected with the first input end of the battery charging module, the second output end of the power supply module is connected with the input end of the charging control module, the input end of the low-voltage power supply module and the first input end of the battery voltage detection module, the output end of the charging control module is connected with the second input end of the battery charging module, the output end of the battery charging module is connected with the second input end of the battery voltage detection module, the output end of the low-voltage power supply module is connected with the input end of the high-temperature-resistant charging module, the input end of the dangerous charging module and the first input end of the power-off working module, the output end of the high-temperature-resistant charging module is connected with the second input end of the power-off working module, and the output end of the dangerous charging module is connected with the third input end of the battery charging module.
As still further aspects of the invention: the battery charging module comprises an eighth MOS tube, a first switch, a second switch and a battery, wherein the D electrode of the eighth MOS tube is connected with the first output end of the power supply module, the G electrode of the eighth MOS tube is connected with the output end of the charging control module, the S electrode of the eighth MOS tube is connected with one end of the first switch, the other end of the first switch is connected with one end of the second switch, the other end of the second switch is connected with the anode of the battery, the second input end of the battery voltage detection module and the cathode of the battery is grounded.
As still further aspects of the invention: the battery voltage detection module comprises a first resistor, a second resistor, a first diode, a second relay, a first triode, a third resistor, a third diode, a fourth resistor, a fifth resistor and a second triode, wherein one end of the first resistor is connected with the output end of the battery charging module, the other end of the first resistor is connected with one end of the second resistor and the negative electrode of the first diode, the other end of the second resistor is grounded, the positive electrode of the first diode is connected with the base electrode of the first triode, the negative electrode of the second diode and one end of the second relay, the other end of the second relay is grounded, the positive electrode of the second diode is grounded, the emitting electrode of the first triode is grounded, the collecting electrode of the first triode is connected with one end of the third resistor, the negative electrode of the third diode and the base electrode of the second triode, the positive electrode of the third diode is connected with the positive electrode of the fourth resistor, the negative electrode of the fourth diode is connected with one end of the second triode and the fifth resistor, the negative electrode of the second diode is connected with one end of the second triode, the other end of the second triode is grounded, and the other end of the third triode is connected with the power supply module.
As still further aspects of the invention: the charging control module comprises a twelfth resistor, a third switch, a thirteenth resistor, a fourteenth resistor, a fourth amplifier, a third potentiometer and a fifth capacitor, one end of the twelfth resistor is connected with the second output end of the power supply module, the other end of the twelfth resistor is connected with one end of the third switch, the other end of the third switch is connected with one end of the thirteenth resistor and the same-phase end of the fourth amplifier, the other end of the thirteenth resistor is connected with one end of the fourteenth resistor, one end of the third potentiometer and the second input end of the battery charging module, the other end of the fourteenth resistor is connected with the output end of the fourth amplifier, the inverting end of the fourth amplifier is connected with one end of the fifth capacitor and the other end of the third potentiometer, and the other end of the fifth capacitor is grounded.
As still further aspects of the invention: the low-voltage power supply module comprises a sixth resistor, a seventh resistor, a fourth triode, a third triode, an eighth resistor, a first potentiometer, a sixth capacitor, a fifth triode and a ninth resistor, wherein one end of the sixth resistor is connected with one end of the seventh resistor and a second output end of the power supply module, the other end of the sixth resistor is connected with an emitter of the fourth triode, a collector of the fourth triode is connected with one end of the ninth resistor and a base of the fifth triode, the other end of the ninth resistor is grounded, an emitter of the fifth triode is grounded, a collector of the fifth triode is connected with one end of the eighth resistor, the other end of the eighth resistor is connected with a base of the third triode, an emitter of the third triode is connected with the other end of the seventh resistor, a collector of the third triode is connected with one end of the first potentiometer, one end of the sixth capacitor, an input end of the high-temperature charging prevention module, an input end of the dangerous charging prevention module and a first input end of the power-off working module, the other end of the sixth capacitor is grounded, the other end of the first potentiometer is grounded, and a sliding end of the first potentiometer is connected with the base of the fourth triode.
As still further aspects of the invention: the high-temperature-resistant charging module comprises a tenth resistor, an eleventh resistor, a temperature-sensitive resistor, a second potentiometer, a first amplifier, one end of the tenth resistor is connected with one end of the eleventh resistor and the output end of the low-voltage power supply module, the other end of the tenth resistor is connected with one end of the temperature-sensitive resistor and the same-phase end of the first amplifier, the other end of the temperature-sensitive resistor is grounded, the other end of the eleventh resistor is connected with one end of the second potentiometer, the other end of the second potentiometer is grounded, the sliding end of the second potentiometer is connected with the inverting end of the first amplifier, and the output end of the first amplifier is connected with the second input end of the power-off working module.
As still further aspects of the invention: the anti-danger charging module comprises a voice chip, a seventh triode, a sixth diode and a distance sensor, wherein the power end of the voice chip is connected with the power end of the distance sensor and the output end of the low-voltage power supply module, the grounding end of the distance sensor is grounded, the output end of the distance sensor is connected with the negative electrode of the sixth diode, the positive electrode of the sixth diode is connected with the base electrode of the seventh triode and the second input end of the power-off working module, the emitting electrode of the seventh triode is grounded, and the collecting electrode of the seventh triode is connected with the grounding end of the voice chip.
As still further aspects of the invention: the power-off working module comprises a first relay, a fifth diode and a sixth triode, one end of the first relay is connected with the negative electrode of the fifth diode and the output end of the low-voltage power supply module, the other end of the first relay is connected with the positive electrode of the fifth diode and the collector electrode of the sixth triode, the emitter electrode of the sixth triode is grounded, and the base electrode of the sixth triode is connected with the output end of the high-temperature-resistant charging module and the output end of the dangerous-charging-resistant module.
Compared with the prior art, the invention has the beneficial effects that: the anti-danger charging module is arranged, so that charging is prevented when people exist in the new energy automobile, voice prompt is performed, and life safety of people in the automobile is prevented from being threatened when charging fails; the anti-high-temperature charging module is arranged, so that the situation that an automobile is parked in the open air, the battery is charged in a higher temperature state under the irradiation of sunlight, the service life of the battery is influenced, and the charging is automatically recovered when the temperature is recovered to be normal is avoided; the high-temperature-resistant charging module and the outage working module are used for disconnecting a charging loop of the battery charging module through the outage working module, so that the circuit volume is saved.
Drawings
Fig. 1 is a schematic diagram of a new energy high-power charging circuit.
Fig. 2 is a circuit diagram of a first part of a new energy high-power charging circuit.
Fig. 3 is a second partial circuit diagram of a new energy high-power charging circuit.
Fig. 4 is a third partial circuit diagram of a new energy high-power charging circuit.
Fig. 5 is a circuit diagram of a fourth part of the new energy high-power charging circuit.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by those skilled in the art without making creative efforts based on the embodiments of the present invention are included in the protection scope of the present invention.
Referring to fig. 1, a new energy high-power charging circuit includes:
the power supply module 1 is used for outputting two direct-current voltages, namely a battery charging module 2 with larger voltage, a charging control module 4 with smaller voltage and a low-voltage power supply module 5;
a battery charging module 2 for charging the battery E1 to store electric energy;
the battery voltage detection module 3 is used for detecting the voltage of the battery E1, emitting light to indicate when the voltage of the battery E1 reaches a threshold value, and disconnecting a charging loop of the battery charging module 2;
a charging control module 4 for controlling whether the battery charging module 2 is charged or not, and the magnitude of the charging voltage;
the low-voltage power supply module 5 is used for generating stable voltage and supplying the stable voltage to the high-temperature-resistant charging module 6, the dangerous charging module 7 and the power-off working module 8;
the anti-high-temperature charging module 6 is used for detecting the charging environment temperature of the battery E1, and driving the power-off working module 8 to work when the temperature stores a threshold value;
the dangerous charging prevention module 7 is used for detecting whether a person exists in the new energy automobile during charging, and driving the power-off working module 8 to work when the person exists;
a power-off operation module 8 for disconnecting the charging circuit of the battery charging module 2;
the first output end of the power supply module 1 is connected with the first input end of the battery charging module 2, the second output end of the power supply module 1 is connected with the input end of the charging control module 4, the input end of the low-voltage power supply module 5 and the first input end of the battery voltage detection module 3, the output end of the charging control module 4 is connected with the second input end of the battery charging module 2, the output end of the battery charging module 2 is connected with the second input end of the battery voltage detection module 3, the output end of the low-voltage power supply module 5 is connected with the input end of the high-temperature-resistant charging module 6, the input end of the dangerous charging module 7 and the first input end of the power-off working module 8, the output end of the high-temperature-resistant charging module 6 is connected with the second input end of the power-off working module 8, and the output end of the power-off working module 8 is connected with the third input end of the battery charging module 2.
In particular embodiments: referring to fig. 2, a power supply module 1 converts alternating current into two direct currents, and one of the two direct currents amplifies 220V alternating current and converts the amplified 220V alternating current into high-voltage direct current VCC1 to charge and supply power to a battery E1; one pair of 220V alternating current is converted into low-voltage direct current VCC2 after being reduced, and power is supplied for circuit operation.
In this embodiment: referring to fig. 3, the battery charging module 2 includes an eighth MOS tube V8, a first switch S1, a second switch S2, and a battery E1, wherein a D pole of the eighth MOS tube V8 is connected to a first output end of the power supply module 1, a G pole of the eighth MOS tube V8 is connected to an output end of the charging control module 4, an S pole of the eighth MOS tube V8 is connected to one end of the first switch S1, the other end of the first switch S1 is connected to one end of the second switch S2, the other end of the second switch S2 is connected to a positive pole of the battery E1, a second input end of the battery voltage detection module 3, and a negative pole of the battery E1 is grounded.
The high-voltage direct current VCC1 charges the battery E1 through an eighth MOS tube V8, a first switch S1 and a second switch S2, the conduction of the eighth MOS tube V8 is controlled by a charging control module 4, and the first switch S1 and the second switch S2 are normally closed.
In another embodiment: the eighth MOS tube V8 can be replaced by a common switch, so that the charging control module 4 can not output different voltages by controlling the conduction degree of the eighth MOS tube V8, and the charging of different types of new energy automobiles is met.
In this embodiment: referring to fig. 3, the battery voltage detection module 3 includes a first resistor R1, a second resistor R2, a first diode D1, a second diode D2, a second relay J2, a first triode V1, a third resistor R3, a third diode D3, a fourth diode D4, a fourth resistor R4, a fifth resistor R5, and a second triode V2, wherein one end of the first resistor R1 is connected to the output end of the battery charging module 2, the other end of the first resistor R1 is connected to one end of the second resistor R2, the negative electrode of the first diode D1, the other end of the second resistor R2 is grounded, the positive electrode of the first diode D1 is connected to the base electrode of the first triode V1, the negative electrode of the second diode D2, one end of the second relay J2, the other end of the second relay J2 is grounded, the positive electrode of the second diode D2 is grounded, the emitter of the first triode V1 is grounded, one end of the third triode V1 is connected to one end of the third resistor R3, the other end of the collector of the third triode V3 is connected to the negative electrode of the third diode D4, the other end of the fourth triode V4 is connected to the positive electrode of the third diode D4, and the other end of the fourth triode V4 is connected to the negative electrode of the fourth resistor R2.
The voltage of the battery E1 (with larger voltage) is divided by the first resistor R1 and the second resistor R2, the voltage on the second resistor R2 is the sampling voltage of the battery E1, when the voltage of the battery E1 is not full, the first diode D1 is used as a voltage stabilizing diode to be not conducted, the first triode V1 is cut off, the third diode D3 does not emit light, at the moment, the second triode V2 is conducted, so that current flows through the fourth resistor R4, the fourth diode D4 and the second triode V2, and the fourth diode D4 emits light to indicate that the battery E1 is charged; when the voltage of the battery E1 is full, the first diode D1 is conducted, the first triode V1 is conducted, the base voltage of the second triode V2 is pulled down, the fourth diode D4 does not emit light, and current flows through the fourth resistor R4, the third diode D3 and the first triode V1, and the third diode D3 emits light to indicate the electric quantity of the battery E1 to be full. When the electric quantity of the battery E1 is full, the second relay J2 is electrified to work, the second switch S2 is controlled to be sprung open, and the charging loop of the battery E1 is disconnected.
In another embodiment: the second diode D2 can be omitted, the second diode D2 is used as a freewheeling diode, and when the second relay J2 is powered off, the high current generated at the moment of the power failure of the second relay J2 is consumed in a circuit in a continuous current mode, so that components in the circuit are protected from being damaged.
In this embodiment: referring to fig. 4, the charge control module 4 includes a twelfth resistor R12, a third switch S3, a thirteenth resistor R13, a fourteenth resistor R14, a fourth amplifier U4, a third potentiometer RP3, and a fifth capacitor C5, one end of the twelfth resistor R12 is connected to the second output end of the power supply module 1, the other end of the twelfth resistor R12 is connected to one end of the third switch S3, the other end of the third switch S3 is connected to one end of the thirteenth resistor R13, the in-phase end of the fourth amplifier U4, the other end of the thirteenth resistor R13 is connected to one end of the fourteenth resistor R14, one end of the third potentiometer RP3, and the second input end of the battery charging module 2, the other end of the fourteenth resistor R14 is connected to the output end of the fourth amplifier U4, the inverting end of the fourth amplifier U4 is connected to one end of the fifth capacitor C5, the other end of the third potentiometer RP3, and the other end of the fifth capacitor C5 is grounded.
The third switch S3 is a charge control switch, and after being pressed, the fifth capacitor C5 is charged and discharged in a reciprocating manner, so that the output end of the fourth amplifier U4 forms a PWM signal, to control the conduction of the eighth MOS transistor V8.
In another embodiment: the third switch S3 is a toggle switch, or a push switch.
In this embodiment: referring to fig. 5, the low-voltage power supply module 5 includes a sixth resistor R6, a seventh resistor R7, a fourth triode V4, a third triode V3, an eighth resistor R8, a first potentiometer RP1, a sixth capacitor C6, a fifth triode V5, and a ninth resistor R9, wherein one end of the sixth resistor R6 is connected to one end of the seventh resistor R7, a second output end of the power supply module 1, the other end of the sixth resistor R6 is connected to an emitter of the fourth triode V4, a collector of the fourth triode V4 is connected to one end of the ninth resistor R9, a base of the fifth triode V5, another end of the ninth resistor V9 is grounded, an emitter of the fifth triode V5 is grounded, a collector of the fifth triode V5 is connected to one end of the eighth resistor R8, another end of the eighth resistor R8 is connected to a base of the third triode V3, an emitter of the third triode V3 is connected to another end of the seventh resistor R7, one end of the third triode V3 is connected to the first potentiometer RP1, another end of the sixth resistor C6 is connected to another end of the sixth resistor R6, a collector of the fourth triode V6 is connected to another end of the fourth resistor V6, and another end of the fourth triode V6 is connected to a dangerous potential input to the first input end of the fourth resistor RP 1.
The low-voltage power supply module 5 constructs voltage-stabilizing output, after power-on, the third triode V3 (PNP) is conducted, the collector electrode outputs voltage, the first potentiometer RP1 collects voltage and feeds back to the base electrode of the fourth triode V4 (PNP) to increase the output voltage, for example, the output voltage of the third triode V3 is increased, the lower the conduction degree of the fourth triode V4 is, the base electrode voltage of the fifth triode V5 (NPN) is reduced, the base electrode voltage of the third triode V3 is increased, and the output voltage of the third triode V3 is reduced; conversely, when the output voltage of the third triode V3 is reduced, the circuit can also restrain the change of the output voltage, so that the voltage stabilizing output is constructed.
In another embodiment: the sixth capacitor C6 may be omitted, and the sixth capacitor C6 serves as a filter capacitor for reducing voltage fluctuations.
In this embodiment: referring to fig. 5, the anti-high temperature charging module 6 includes a tenth resistor R10, an eleventh resistor R11, a temperature sensitive resistor RW, a second potentiometer RP2, a first amplifier U1, one end of the tenth resistor R10 is connected to one end of the eleventh resistor R11, an output end of the low-voltage power supply module 5, the other end of the tenth resistor R10 is connected to one end of the temperature sensitive resistor RW, an in-phase end of the first amplifier U1, the other end of the temperature sensitive resistor RW is grounded, the other end of the eleventh resistor R11 is connected to one end of the second potentiometer RP2, the other end of the second potentiometer RP2 is grounded, a sliding end of the second potentiometer RP2 is connected to an inverting end of the first amplifier U1, and an output end of the first amplifier U1 is connected to a second input end of the power-off working module 8.
The low-voltage power supply module 5 outputs stable voltage, the temperature-sensitive resistor RW collects the temperature of the battery E1, the resistance value changes along with the temperature change of the battery E1, in summer, a user drives the vehicle to charge, and the battery E1 is stable and high because the battery E1 is under the irradiation of sunlight for a long time, and the service life of the battery E1 can be influenced when the battery E1 is charged; at this time, the voltage on the temperature-sensitive resistor RW is larger, so that the in-phase terminal voltage of the first amplifier U1 is higher than the opposite-phase terminal voltage, the first amplifier U1 outputs a high level, and drives the power-off working module 8 to work, so as to disconnect the power supply loop of the battery charging module 2, and avoid charging when the temperature of the battery E1 is higher. When the temperature of the battery E1 drops to a normal level, the in-phase terminal voltage of the first amplifier U1 is lower than the reverse-phase terminal voltage, and the power-off operation module 8 is stopped to be driven, so that the battery E1 is restored to be charged.
In another embodiment: the light emitting diode may be added to indicate whether the temperature of the battery E1 is higher.
In this embodiment: referring to fig. 5, the danger preventing charging module 7 includes a voice chip U2, a seventh triode V7, a sixth diode D6, and a distance sensor U3, wherein a power end of the voice chip U2 is connected to a power end of the distance sensor U3, an output end of the low-voltage power supply module 5, a ground of the distance sensor U3 is grounded, an output end of the distance sensor U3 is connected to a negative electrode of the sixth diode D6, a positive electrode of the sixth diode D6 is connected to a base electrode of the seventh triode V7, a second input end of the power-off working module 8, an emitter electrode of the seventh triode V7 is grounded, and a collector electrode of the seventh triode V7 is connected to a ground of the voice chip U2.
The dangerous charging prevention module 7 use scenario specifically exemplifies: a plurality of persons are arranged in the vehicle, a driver gets off to charge the new energy automobile, and other persons do not get off yet; after the circuit is electrified, the distance sensor U3 detects the human body distance, when the human body distance is relatively close (namely in a vehicle), the output voltage is relatively large, the sixth diode D6 (voltage-stabilizing diode) is conducted, the power-off working module 8 is driven to disconnect the working loop of the battery charging module 2, meanwhile, the seventh triode V7 is conducted, the voice chip U2 works, the voice chip U2 can record voice reminding information such as getting off the vehicle to remind a person to get off the vehicle, after the person gets off the vehicle, the output voltage of the distance sensor U3 is relatively small, the sixth diode D6 is not conducted sufficiently, the voice chip U2 stops voice, the power-off working module 8 stops working, and the battery E1 starts to charge.
In another embodiment: the seventh transistor V7 may be replaced by a MOS transistor.
In this embodiment: referring to fig. 5, the power-off working module 8 includes a first relay J1, a fifth diode D5, and a sixth triode V6, wherein one end of the first relay J1 is connected to the negative electrode of the fifth diode D5 and the output end of the low-voltage power supply module 5, the other end of the first relay J1 is connected to the positive electrode of the fifth diode D5 and the collector electrode of the sixth triode V6, the emitter electrode of the sixth triode V6 is grounded, and the base electrode of the sixth triode V6 is connected to the output end of the high-temperature-resistant charging module 6 and the output end of the dangerous-resistant charging module 7.
When the high-temperature-resistant charging module 6 or the dangerous-charging-resistant module 7 outputs a high level, the sixth triode V6 is conducted, the first relay J1 is further powered on to work, the first switch S1 is controlled to be sprung on, and the charging loop of the battery E1 is powered off.
In another embodiment: the first relay J1 and the fifth diode D5 may be disposed at the emitter of the sixth transistor V6, which has a higher requirement for the supply voltage.
The working principle of the invention is as follows: the power supply module 1 outputs two direct-current voltages, and supplies the two direct-current voltages to the battery charging module 2 with larger voltage, the charging control module 4 with smaller voltage and the low-voltage power supply module 5; the battery charging module 2 charges a battery E1 to store electric energy; the battery voltage detection module 3 detects the voltage of the battery E1, and when the voltage of the battery E1 reaches a threshold value, the battery voltage detection module emits light to indicate and turns off a charging loop of the battery charging module 2; the charging control module 4 controls whether the battery charging module 2 is charged or not, and the magnitude of the charging voltage; the low-voltage power supply module 5 generates stable voltage and supplies the stable voltage to the high-temperature-resistant charging module 6, the dangerous charging module 7 and the power-off working module 8; the anti-high-temperature charging module 6 detects the charging environment temperature of the battery E1, and drives the power-off working module 8 to work when the temperature stores a threshold value; the anti-danger charging module 7 detects whether a person exists in the new energy automobile during charging, and drives the power-off working module 8 to work when the person exists; the power-off operation module 8 breaks the charging circuit of the battery charging module 2.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (8)
1. A new energy high-power charging circuit is characterized in that:
the new energy high-power charging circuit comprises:
the power supply module is used for outputting two direct-current voltages, supplying a battery charging module with larger voltage, and supplying a charging control module with smaller voltage and a low-voltage power supply module;
the battery charging module is used for charging the battery and storing electric energy;
the battery voltage detection module is used for detecting the battery voltage, emitting light to indicate when the battery voltage reaches a threshold value, and disconnecting a charging loop of the battery charging module;
the charging control module is used for controlling whether the battery charging module is charged or not and the magnitude of charging voltage;
the low-voltage power supply module is used for generating stable voltage and supplying the stable voltage to the high-temperature charging prevention module, the dangerous charging prevention module and the power-off working module;
the high-temperature-resistant charging module is used for detecting the temperature of the battery charging environment, and driving the power-off working module to work when the temperature stores a threshold value;
the dangerous charging prevention module is used for detecting whether a person exists in the new energy automobile during charging, and driving the power-off working module to work when the person exists;
the power-off working module is used for disconnecting a charging loop of the battery charging module;
the first output end of the power supply module is connected with the first input end of the battery charging module, the second output end of the power supply module is connected with the input end of the charging control module, the input end of the low-voltage power supply module and the first input end of the battery voltage detection module, the output end of the charging control module is connected with the second input end of the battery charging module, the output end of the battery charging module is connected with the second input end of the battery voltage detection module, the output end of the low-voltage power supply module is connected with the input end of the high-temperature-resistant charging module, the input end of the dangerous charging module and the first input end of the power-off working module, the output end of the high-temperature-resistant charging module is connected with the second input end of the power-off working module, and the output end of the dangerous charging module is connected with the third input end of the battery charging module.
2. The high-power charging circuit of claim 1, wherein the battery charging module comprises an eighth MOS tube, a first switch, a second switch and a battery, the D pole of the eighth MOS tube is connected with the first output end of the power supply module, the G pole of the eighth MOS tube is connected with the output end of the charging control module, the S pole of the eighth MOS tube is connected with one end of the first switch, the other end of the first switch is connected with one end of the second switch, the other end of the second switch is connected with the positive pole of the battery, the second input end of the battery voltage detection module and the negative pole of the battery is grounded.
3. The high-power charging circuit of claim 2, wherein the battery voltage detection module comprises a first resistor, a second resistor, a first diode, a second relay, a first triode, a third resistor, a third diode, a fourth resistor, a fifth resistor and a second triode, one end of the first resistor is connected with the output end of the battery charging module, the other end of the first resistor is connected with one end of the second resistor and the negative electrode of the first diode, the other end of the second resistor is grounded, the positive electrode of the first diode is connected with the base electrode of the first triode, the negative electrode of the second diode and one end of the second relay, the other end of the second relay is grounded, the positive electrode of the second diode is grounded, the emitter of the first triode is grounded, the collector of the first triode is connected with one end of the third resistor, the negative electrode of the third diode, the base electrode of the second triode is connected with the positive electrode of the fourth diode, one end of the fourth resistor is connected with the negative electrode of the fourth resistor, the other end of the fourth diode is connected with the negative electrode of the fourth diode, the other end of the fourth triode is connected with the output end of the fourth resistor is grounded, and the other end of the fourth triode is connected with the fourth resistor.
4. The high-power charging circuit of claim 1, wherein the charging control module comprises a twelfth resistor, a third switch, a thirteenth resistor, a fourteenth resistor, a fourth amplifier, a third potentiometer and a fifth capacitor, one end of the twelfth resistor is connected with the second output end of the power supply module, the other end of the twelfth resistor is connected with one end of the third switch, the other end of the third switch is connected with one end of the thirteenth resistor and the same-phase end of the fourth amplifier, the other end of the thirteenth resistor is connected with one end of the fourteenth resistor, one end of the third potentiometer and the second input end of the battery charging module, the other end of the fourteenth resistor is connected with one end of the fifth capacitor and the other end of the third potentiometer, and the other end of the fifth capacitor is grounded.
5. The high-power charging circuit of claim 1, wherein the low-voltage power supply module comprises a sixth resistor, a seventh resistor, a fourth triode, a third triode, an eighth resistor, a first potentiometer, a sixth capacitor, a fifth triode and a ninth resistor, one end of the sixth resistor is connected with one end of the seventh resistor, a second output end of the power supply module, the other end of the sixth resistor is connected with an emitter of the fourth triode, a collector of the fourth triode is connected with one end of the ninth resistor, a base of the fifth triode, the other end of the ninth resistor is grounded, an emitter of the fifth triode is grounded, a collector of the fifth triode is connected with one end of the eighth resistor, the other end of the eighth resistor is connected with a base of the third triode, an emitter of the third triode is connected with the other end of the seventh resistor, a collector of the third triode is connected with one end of the first potentiometer, one end of the sixth capacitor, an input end of the high-temperature charging prevention module, an input end of the dangerous charging module, a first input end of the power-off working module, the other end of the sixth resistor is grounded, and the other end of the first resistor is connected with a sliding end of the fourth resistor.
6. The high-power charging circuit of claim 1, wherein the high-temperature-resistant charging module comprises a tenth resistor, an eleventh resistor, a temperature-sensitive resistor, a second potentiometer, a first amplifier, one end of the tenth resistor is connected with one end of the eleventh resistor, the output end of the low-voltage power supply module, the other end of the tenth resistor is connected with one end of the temperature-sensitive resistor, the same-phase end of the first amplifier, the other end of the temperature-sensitive resistor is grounded, the other end of the eleventh resistor is connected with one end of the second potentiometer, the other end of the second potentiometer is grounded, the sliding end of the second potentiometer is connected with the inverting end of the first amplifier, and the output end of the first amplifier is connected with the second input end of the power-off working module.
7. The high-power charging circuit of claim 1 or 6, wherein the danger preventing charging module comprises a voice chip, a seventh triode, a sixth diode and a distance sensor, wherein a power end of the voice chip is connected with a power end of the distance sensor, an output end of the low-voltage power supply module, a grounding end of the distance sensor is grounded, an output end of the distance sensor is connected with a negative electrode of the sixth diode, a positive electrode of the sixth diode is connected with a base electrode of the seventh triode and a second input end of the power-off working module, an emitter electrode of the seventh triode is grounded, and a collector electrode of the seventh triode is connected with a grounding end of the voice chip.
8. The high-power charging circuit of claim 1, wherein the power-off working module comprises a first relay, a fifth diode and a sixth triode, one end of the first relay is connected with the negative electrode of the fifth diode and the output end of the low-voltage power supply module, the other end of the first relay is connected with the positive electrode of the fifth diode and the collector electrode of the sixth triode, the emitter electrode of the sixth triode is grounded, and the base electrode of the sixth triode is connected with the output end of the high-temperature-resistant charging module and the output end of the dangerous-resistant charging module.
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| CN116599192B (en) * | 2023-07-17 | 2023-09-08 | 国家电投集团沧州新能源发电有限公司 | Photovoltaic off-grid, commercial network and energy storage hybrid power supply system |
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