CN110696672A - System for realizing rapid charging of power battery - Google Patents
System for realizing rapid charging of power battery Download PDFInfo
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- CN110696672A CN110696672A CN201911087007.0A CN201911087007A CN110696672A CN 110696672 A CN110696672 A CN 110696672A CN 201911087007 A CN201911087007 A CN 201911087007A CN 110696672 A CN110696672 A CN 110696672A
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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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
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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
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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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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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
- Y02T10/72—Electric energy management in electromobility
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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
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
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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
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
Abstract
The invention discloses a system for realizing rapid charging of a power battery, which mainly solves the problem that the service life of the battery is very short due to the fact that the power battery is charged by adopting a constant-current charging mode and a constant-voltage charging mode in the prior art. The system comprises an EMI filter circuit connected with a mains supply, a rectifying circuit connected with the EMI filter circuit, a BOOST synchronous rectifying circuit and an auxiliary power supply circuit which are simultaneously connected with a rectifying current, a rechargeable battery connected with the BOOST synchronous rectifying circuit, a control circuit which is simultaneously connected with the rechargeable battery and the auxiliary power supply circuit and feeds signals back to the BOOST synchronous rectifying circuit, and a prompt circuit connected with the rechargeable battery and the auxiliary power supply circuit. Through the scheme, the invention achieves the purposes of controlling the main circuit through the control circuit and charging the battery load, and has very high practical value and popularization value.
Description
Technical Field
The invention belongs to the technical field of battery charging, and particularly relates to a system for realizing rapid charging of a power battery.
Background
Whether the electric automobile can be developed quickly or not is an extremely important part for improving the charging mode, and if the charging time is too long and the endurance is poor, the electric automobile can be in a standstill, so that the research on improving the charging mode of the power battery is very important. At first, the charging mode of the power battery is single, and mainly adopts a constant-current charging mode and a constant-voltage charging mode to charge the power battery, and the two charging methods are simple and do not have too many places to be controlled. The battery is charged by the two charging modes, the service life of the battery is very short, and the maximum acceptable charging curve of the battery is found later through the research on the characteristics of the battery. According to the charging curve, the current required by the battery is intuitively known to be smaller and smaller along with the charging of the power battery. Therefore, when the power battery is charged at constant voltage in the initial stage, the large current generated in the charging circuit or the constant current charging is adopted, the large current generated in the final stage of charging exceeds the maximum charging current accepted by the battery, and the battery is in an overcharged state. These causes can cause polarization and gassing of the battery, which can shorten battery life, reduce battery capacity, and damage the power battery. On the basis, researchers at home and abroad further optimize the charging mode, and provide various charging modes such as a constant-current constant-voltage charging mode, a positive pulse charging method, a negative pulse charging method, a variable-current intermittent charging method, a variable-voltage charging method and the like, and a multi-stage constant-current charging method and the like which are developed in recent research work. The modes not only greatly improve the charging efficiency and the charging speed of the power battery, but also ensure the service life of the battery and inhibit the reactions of polarization phenomenon, gassing phenomenon and the like of the battery to the damage of the battery. In the process of rapid development of electric vehicles, lithium batteries are the most important part of power batteries, and the research on the charging mode of the lithium batteries is very important. However, to eliminate the polarization phenomenon in the true sense, a more complete fast charging mode is sought, and more research is needed. The electric automobile as a new energy automobile is a necessary process to replace the traditional automobile. In order to have a place for the huge industry in the automotive field, a power battery is taken as the core of an electric automobile. Therefore, it is very important to research the way of fast charging the power battery.
Disclosure of Invention
The invention aims to provide a system for realizing rapid charging of a power battery, which mainly solves the problem that the service life of the battery is very short due to the fact that the power battery is charged by adopting a constant-current charging mode and a constant-voltage charging mode in the prior art.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a system for realizing rapid charging of a power battery comprises an EMI filter circuit connected with a mains supply, a rectifying circuit connected with the EMI filter circuit, a BOOST synchronous rectifying circuit and an auxiliary power supply circuit which are simultaneously connected with a rectifying current, a rechargeable battery connected with the BOOST synchronous rectifying circuit, a control circuit simultaneously connected with the rechargeable battery and the auxiliary power supply circuit and feeding back signals to the BOOST synchronous rectifying circuit, and a prompt circuit simultaneously connected with the rechargeable battery and the auxiliary power supply circuit;
the EMI filter circuit comprises a capacitor C1 with two ends respectively connected with a mains supply, a transformer T1 with an input end respectively connected with two ends of a capacitor C1, a capacitor C2 with two ends respectively connected with an output end of the transformer, a capacitor C3 and a capacitor C4 which are respectively connected with two ends of the capacitor C2 after being connected in series, and a transformer T2 with an input end simultaneously connected with two ends of the capacitor C2, wherein one end of a capacitor C3 is connected with one end of the capacitor C2 and is grounded, and the output end of the transformer T2 is connected with a rectifying circuit;
the EMI filter circuit, the rectifying circuit and the BOOST synchronous rectifying circuit connected with the mains supply form a main circuit.
Furthermore, the rectifying circuit is a bridge rectifying circuit, the AC end of the bridge rectifying circuit is connected with the output end of the transformer T2, the positive and negative ends of the bridge rectifying circuit are respectively connected with the filter capacitor C5 and the BOOST synchronous rectifying circuit, wherein the capacitor C5 is an electrolytic capacitor, and the positive electrode is connected with the positive electrode of the bridge rectifying circuit.
Furthermore, the BOOST synchronous rectification circuit comprises an electrolytic capacitor C6 with the positive electrode and the negative electrode respectively connected with the positive end and the negative end of the bridge rectification circuit, a capacitor C7 respectively connected with the two ends of the electrolytic capacitor C6, an inductor L1 connected with the positive electrode of the electrolytic capacitor C6 at one end, a MOS tube Q2 with the drain connected with the other end of the inductor L1 and the source connected with the negative electrode of the electrolytic capacitor C6, a MOS tube Q1 with the source connected with the drain of the MOS tube Q2, an electrolytic capacitor C8 and a capacitor C9 with the positive electrode connected with the drain of the MOS tube Q1 and the negative electrode connected with the source of the MOS tube Q2 after being connected in parallel, wherein the two ends of the capacitor C9 are connected with a rechargeable battery, and the source.
Specifically, the control circuit comprises a drive chip IR2111 with a 6 th pin connected with the source of a MOS tube Q1 in a BOOST synchronous rectification circuit, a resistor R4 with one end connected with the 6 th pin of the drive chip IR2111 and the other end connected with the grid of a MOS tube Q1, a resistor R1 with one end connected with the 7 th pin of the drive chip IR2111 and the other end connected with the grid of the MOS tube Q1, a capacitor C10 with one end connected with the 6 th pin of the drive chip IR2111 and the other end connected with the 8 th pin of the drive chip IR2111, a resistor R7 with one end connected with the 4 th pin of the drive chip IR2111 and the other end connected with the grid of the MOS tube Q2, a resistor R8 with one end connected with the grid of the MOS tube Q2 and the other end grounded, a diode D5 with the positive pole connected with the 1 st pin of the drive chip IR2111 and the negative pole connected with the 8 th pin of the drive chip IR2111, a capacitor C11 with the 1 st pin of the one end connected with, the driving circuit comprises a resistor R3 with one end connected with the 1 st pin of the driving chip IR2111 and the other end connected with the 2 nd pin of the driving chip IR2111, a three-connection tube Q3 with a collector connected with the 2 nd pin of the driving chip IR2111 and an emitter grounded, and a resistor R5 with one end connected with the base of a triode Q3 and the other end connected with the singlechip, wherein the 1 st pin of the driving chip IR2111 is connected with 12V, and the 3 rd pin of the driving chip IR2111 is grounded.
Compared with the prior art, the invention has the following beneficial effects:
(1) the main function of the main circuit design of the invention is to filter out the higher harmonics in the power grid after the commercial power AC220V passes through the EMI rectification circuit, so as to avoid damaging the elements in the circuit and even influencing the performance of the rechargeable battery. Then, alternating current is converted into direct current through a rectifying circuit, and the direct current is output to an external rechargeable battery through a BOOST synchronous rectifying circuit, namely the running state of the main circuit. The main circuit is controlled by the control circuit to charge the battery load.
(2) The invention adjusts the output voltage of the charging circuit through the control circuit, and performs constant current charging and constant voltage charging on the battery, thereby completing the constant current and constant voltage rapid charging on a certain basis. The invention has the advantages that the internal resistance of the battery is larger and larger along with the charging, and the voltage drop at two ends of the battery is higher and higher. In order to ensure that the constant current charging is carried out on the battery load, the output voltage of the main circuit is higher and higher, and the charging mode is not changed until the requirement of constant voltage output is met, so that the constant voltage charging mode is carried out.
(3) The rectifier circuit of the invention adopts bridge rectification, and the full-bridge rectification adopts four rectifier diodes in the circuit, thus reducing half of reverse voltage and current borne by the rectifier diodes, increasing the output power of the circuit by two rectifier diodes, and being in line with a high-power circuit for rapidly charging a power battery.
Drawings
FIG. 1 is a block diagram of the system architecture of the present invention.
FIG. 2 is a schematic circuit diagram of an EMI filter circuit according to the present invention.
Fig. 3 is a schematic circuit diagram of a rectifier circuit of the present invention.
FIG. 4 is a schematic circuit diagram of a BOOST synchronous rectification circuit of the present invention.
Fig. 5 is a circuit schematic of the control circuit of the present invention.
FIG. 6 is a schematic diagram of the auxiliary power circuit 12V of the present invention.
FIG. 7 is a schematic diagram of an auxiliary power supply circuit 5V circuit according to the present invention
FIG. 8 is a schematic circuit diagram of the hint circuit of the present invention.
Detailed Description
The present invention is further illustrated by the following figures and examples, which include, but are not limited to, the following examples.
Examples
As shown in fig. 1 to 8, a system for realizing fast charging of a power battery comprises an EMI filter circuit connected with a mains supply, a rectifier circuit connected with the EMI filter circuit, a BOOST synchronous rectifier circuit and an auxiliary power supply circuit simultaneously connected with a rectifier current, a rechargeable battery connected with the BOOST synchronous rectifier circuit, a control circuit simultaneously connected with the rechargeable battery and the auxiliary power supply circuit and feeding back signals to the BOOST synchronous rectifier circuit, and a prompt circuit simultaneously connected with the rechargeable battery and the auxiliary power supply circuit; the EMI filter circuit comprises a capacitor C1 with two ends respectively connected with a mains supply, a transformer T1 with an input end respectively connected with two ends of a capacitor C1, a capacitor C2 with two ends respectively connected with an output end of the transformer, a capacitor C3 and a capacitor C4 which are respectively connected with two ends of the capacitor C2 after being connected in series, and a transformer T2 with an input end simultaneously connected with two ends of the capacitor C2, wherein one end of a capacitor C3 is connected with one end of the capacitor C2 and is grounded, and the output end of the transformer T2 is connected with a rectifying circuit; the EMI filter circuit, the rectifying circuit and the BOOST synchronous rectifying circuit connected with the mains supply form a main circuit.
As shown in fig. 2, when the EMI filter circuit charges the power battery, the commercial power AC220V is input, in order to prevent the interference of the AC signals with other frequencies in the power grid to the power battery and the charging circuit, the high-frequency signals in the external power grid will affect the charging circuit, and even damage the performance of the power battery, the EMI filter circuit is used to input the AC power with the frequency of 50Hz in the power grid to the charging device, filter out other high-frequency signals, and reduce the external electromagnetic interference.
When a controllable circuit is adopted, a signal is needed to control the switching process of the controllable silicon, compared with an uncontrollable circuit, a driving circuit of an MOS (metal oxide semiconductor) tube is added, and the circuit structure is also complicated. Because a BOOST synchronous rectification circuit is added behind the rectification circuit, the switching duty ratio of an MOS tube in the circuit is changed, and the output voltage is adjusted, an uncontrollable rectification circuit is adopted, the cost is saved, a control circuit is reduced, and the circuit structure is simple.
The working principle of the bridge rectifier circuit in fig. 3 is as follows: rectifier diodes D1 and D4 are one set of bridge arms, and D2 and D3 are the other set of bridge arms. When the point of Ua is higher than the potential of Ub, the rectifier diodes D3 and D2 are conducted, and current flows from the power supply Ua through D3, the load and D2 to the end of the power supply Ub; when the voltage of Ub is higher than the voltage of Ua, rectifier diodes D4 and D1 conduct, and current flows from the power source Ub through D4, the load, D1 back to the power source a terminal. After passing through the rectifying circuit, the output voltage is a sine wave with all positive voltages, thereby realizing bridge rectification. And a large filter capacitor C5 is added at the end of the rectifying circuit to obtain a stable voltage.
FIG. 4 is a BOOST synchronous rectification circuit diagram. The voltage obtained by the rectifying circuit is about 310V, and the initial voltage required by the designed high-power charging mode is about 400V, so that the BOOST chopper circuit is selected to increase the voltage. If the traditional BOOST circuit is adopted, when the Schottky diode reverses, the diode plays a role in isolation, and the service life of the circuit cannot be influenced. When the diode is conducted in the forward direction, because the diode has a voltage drop, much energy is consumed, and the power efficiency is reduced, so that the charging efficiency is higher the lower the voltage drop of the selected diode is. Therefore, the main circuit of the design adopts the BOOST synchronous rectification circuit, utilizes the advantages of low on-state voltage, small on-state resistance and low loss of the MOS tube to replace a Schottky diode in the BOOST booster circuit with the MOS tube, and charges the battery after the input voltage is boosted by the BOOST synchronous rectification circuit. The voltage and current across the cell are then collected. The acquired signals are input into the singlechip after analog-to-digital conversion, and set PID operation is carried out, so that the output voltage of the charging circuit is controlled. Because the knowledge of the single chip microcomputer is limited, the STM32 single chip microcomputer is adopted to analyze current sampling, corresponding PWM waves are output, then the PWM waves are amplified, the MOS tube is controlled, and finally constant-current charging and constant-voltage charging are realized.
Fig. 5 shows a control circuit, when a single chip microcomputer (STM32 series single chip microcomputer) outputs a PWM signal, the signal can be amplified by a triode and then input to a driving chip, and through the chip, a completely opposite signal can be obtained in addition to a mode-identical PWM signal. Thus, the standard of the full symbol BOOST synchronous rectification circuit just controls the switching of two MOS tubes in the booster circuit, and the IR2111 can be fully used for + 600V.
The auxiliary power supply circuit of the invention respectively adopts the existing 12V stabilized power supply circuit and 5V stabilized power supply circuit, the 12V stabilized power supply circuit adopts an LM7812 stabilized voltage chip to reduce the input 15V direct current voltage to 12V stabilized voltage, and because the input power supply voltage of the driving chip IR2111 and the operational amplifier LM358 is 12V, a 12V voltage is needed. And the maximum current of LM7812 can reach 1.5A, and the normal use of the electronic elements can be completely endured. Meanwhile, filter capacitors are added at the input end and the output end of the LM7812 voltage stabilizing chip, so that the voltage is more stable, an electronic element cannot be damaged, and the auxiliary power supply circuit is the first part of the auxiliary power supply circuit. The second part of the auxiliary power supply adopts an LM7805 voltage stabilizing chip to stabilize the input 12V voltage to 5V, and the maximum current of the auxiliary power supply can also reach 1.5A, so that the auxiliary power supply conforms to the circuit design. Similarly, a filter capacitor is added at the output end of LM 7805. The 5V voltage mainly supplies power to the ACS712, STM32 single chip microcomputer and the two LED diodes of the current sensor
The indicating circuit in the invention is a conventional circuit, the common terminal of the relay JK1 is connected to a 5V regulated power supply, the normally closed terminal is grounded through a red light emitting LED diode, and the normally open terminal is grounded through a yellow light emitting LED diode. The coil one end direct ground connection of relay JK1, the other end is connected at voltage comparator's output, embeds a resistance in the relay, and the effect of this resistance limits the size of electric current, guarantees the relay normal operating. When the red LED is on, the constant current charging is performed; when the yellow LED diode is on, it indicates that constant voltage charging is being performed.
The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, but all changes that can be made by applying the principles of the present invention and performing non-inventive work on the basis of the principles shall fall within the scope of the present invention.
Claims (4)
1. A system for realizing rapid charging of a power battery is characterized by comprising an EMI filter circuit connected with a mains supply, a rectifying circuit connected with the EMI filter circuit, a BOOST synchronous rectifying circuit and an auxiliary power supply circuit which are simultaneously connected with a rectifying current, a rechargeable battery connected with the BOOST synchronous rectifying circuit, a control circuit simultaneously connected with the rechargeable battery and the auxiliary power supply circuit and feeding signals back to the BOOST synchronous rectifying circuit, and a prompt circuit simultaneously connected with the rechargeable battery and the auxiliary power supply circuit;
the EMI filter circuit comprises a capacitor C1 with two ends respectively connected with a mains supply, a transformer T1 with an input end respectively connected with two ends of a capacitor C1, a capacitor C2 with two ends respectively connected with an output end of the transformer, a capacitor C3 and a capacitor C4 which are respectively connected with two ends of the capacitor C2 after being connected in series, and a transformer T2 with an input end simultaneously connected with two ends of the capacitor C2, wherein one end of a capacitor C3 is connected with one end of the capacitor C2 and is grounded, and the output end of the transformer T2 is connected with a rectifying circuit;
the EMI filter circuit, the rectifying circuit and the BOOST synchronous rectifying circuit connected with the mains supply form a main circuit.
2. The system for realizing the rapid charging of the power battery as claimed in claim 1, wherein the rectifier circuit is a bridge rectifier circuit, the AC terminal of the bridge rectifier circuit is connected to the output terminal of the transformer T2, the positive and negative terminals of the bridge rectifier circuit are respectively connected to the filter capacitor C5 and the BOOST synchronous rectifier circuit, wherein the capacitor C5 is an electrolytic capacitor, and the positive terminal is connected to the positive terminal of the bridge rectifier circuit.
3. The system for realizing the rapid charging of the power battery as claimed in claim 2, wherein the BOOST synchronous rectification circuit comprises an electrolytic capacitor C6 with positive and negative electrodes respectively connected with the positive and negative ends of the bridge rectification circuit, a capacitor C7 respectively connected with the two ends of the electrolytic capacitor C6, an inductor L1 with one end connected with the positive electrode end of the electrolytic capacitor C6, a MOS transistor Q2 with a drain connected with the other end of the inductor L1 and a source connected with the negative electrode of the electrolytic capacitor C6, a MOS transistor Q1 with a source connected with the drain of the MOS transistor Q2, an electrolytic capacitor C8 and a capacitor C9 with a positive electrode connected with the drain of the MOS transistor Q1 and a negative electrode connected with the source of the MOS transistor Q2, wherein the two ends of the capacitor C9 are connected with the charging battery, and the source of the MOS transistor Q2 is grounded.
4. The system as claimed in claim 3, wherein the control circuit includes a driver chip IR2111 with a 6 th pin connected to the source of a MOS transistor Q1 in the BOOST synchronous rectification circuit, a resistor R4 with one end connected to the 6 th pin of the driver chip IR2111 and the other end connected to the gate of the MOS transistor Q1, a resistor R1 with one end connected to the 7 th pin of the driver chip IR2111 and the other end connected to the gate of the MOS transistor Q1, a capacitor C10 with one end connected to the 6 th pin of the driver chip IR2111 and the other end connected to the 8 th pin of the driver chip IR2111, a resistor R7 with one end connected to the 4 th pin of the driver chip IR2111 and the other end connected to the gate of the MOS transistor Q2, a resistor R8 with one end connected to the gate of the MOS transistor Q2 and the other end grounded, a diode D5 with its positive pole connected to the 1 st pin of the driver chip IR2111 and its negative pole connected to the 8 th pin of the driver chip IR2111, and a first pin of the driver chip IR, The driving circuit comprises a capacitor C11 with the other end connected with a 3 rd pin of the driving chip IR2111, a resistor R3 with one end connected with a 1 st pin of the driving chip IR2111 and the other end connected with a 2 nd pin of the driving chip IR2111, a three-connection tube Q3 with a collector connected with a 2 nd pin of the driving chip IR2111 and an emitter grounded, and a resistor R5 with one end connected with a base electrode of a triode Q3 and the other end connected with the singlechip, wherein the 1 st pin of the driving chip IR2111 is connected with 12V, and the 3 rd pin of the driving chip IR2111 is grounded.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023098527A1 (en) * | 2021-11-30 | 2023-06-08 | 长春捷翼汽车科技股份有限公司 | Electric vehicle charging power supply and charging management system, charging pile, and electric vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023098527A1 (en) * | 2021-11-30 | 2023-06-08 | 长春捷翼汽车科技股份有限公司 | Electric vehicle charging power supply and charging management system, charging pile, and electric vehicle |
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