CN115622105A - Charging and discharging system of energy storage type electric automobile charging pile - Google Patents

Charging and discharging system of energy storage type electric automobile charging pile Download PDF

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Publication number
CN115622105A
CN115622105A CN202211394974.3A CN202211394974A CN115622105A CN 115622105 A CN115622105 A CN 115622105A CN 202211394974 A CN202211394974 A CN 202211394974A CN 115622105 A CN115622105 A CN 115622105A
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resistor
mos transistor
diode
mos
grounded
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CN202211394974.3A
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CN115622105B (en
Inventor
王毛
郑城市
张亚栋
翟亚州
任必晋
刘旭东
张校卿
张本
贺远
史亚京
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Jiyuan Power Supply Co of State Grid Henan Electric Power Co Ltd
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Jiyuan Power Supply Co of State Grid Henan Electric Power Co Ltd
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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
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/28—Arrangements for balancing of the load in a network by storage of energy
    • H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
    • H02J3/322—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means the battery being on-board an electric or hybrid vehicle, e.g. vehicle to grid arrangements [V2G], power aggregation, use of the battery for network load balancing, coordinated or cooperative battery charging
    • 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]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/00304—Overcurrent protection
    • 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
    • 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
    • H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/00714—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current
    • H02J7/00718—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery charging or discharging current in response to charge current gradient
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/007—Regulation of charging or discharging current or voltage
    • H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H02J7/007182—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters in response to battery voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/32—Means for protecting converters other than automatic disconnection
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/21—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/217—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
    • H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
    • H02M7/53871—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
    • 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
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/20—Charging or discharging characterised by the power electronics converter
    • 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
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

The application relates to a charging and discharging system of an energy storage type electric automobile charging pile, which mainly comprises a positive change charging circuit, an inversion charging circuit and a charging and discharging control circuit. The energy conversion and control between the power grid and the storage battery of the electric automobile can be realized, so that the aims of quickly charging the storage battery, keeping the part structure of the vehicle-mounted storage battery and prolonging the service life of the battery are fulfilled, and the effect of load balance between the commercial power grid and the battery can be maintained. The positive-change charging circuit is used for rapidly charging the electric energy of a power grid into a vehicle-mounted storage battery; the inverter discharge circuit is used for realizing the function of inverting the electric energy from the vehicle-mounted battery to the power grid; and the charge and discharge control circuit is used for detecting the electric quantity of the vehicle-mounted battery and protecting the vehicle-mounted battery from being damaged by overhigh or overlow voltage.

Description

Charging and discharging system of energy storage type electric automobile charging pile
Technical Field
The application relates to the field of charging control and charging piles, in particular to a charging and discharging system of a charging pile of an energy storage type electric automobile.
Background
With the low-carbon and environment-friendly concept becoming a new direction mark in recent years, the technology of the new energy industry is rapidly improved, and the transition from the traditional oil-gas vehicle to the current electric vehicle is also developed. However, the domestic electric automobile industry is in a starting stage at present, and the popularization of the electric automobile is restricted by the problems of short mileage, limited charging equipment and the like of the electric automobile. Even though many famous car manufacturers at home and abroad make a lot of breakthroughs on the storage battery energy storage technology at present, the number of the electric car charging piles is continuously increased along with the popularization of the electric car. However, the development of the electric automobile industry still faces many challenges, and the charging device is one of the challenges, but the challenges and the opportunities are both presented. And this system design is from the angle of balanced electric wire netting, realizes electric automobile and the two-way transmission of electric wire netting energy through designing a new-type electric pile that fills, and electric automobile can obtain the electric energy from the electric wire netting promptly, can feed back the electric energy to the electric wire netting again simultaneously to make an electric automobile can supply with the load balance of electric wire netting infrastructure. Meanwhile, bidirectional charging has many benefits for a vehicle-mounted battery, and when the electric quantity of the vehicle-mounted storage battery is too high, a discharging operation is adopted to load the storage battery to shorten the service life of the battery in a fully charged state; and meanwhile, when the electric quantity is too low, the residual electric energy is fed back to the power grid of the house and the automobile is charged again, so that the charge and discharge cycle of the battery is carried out.
As shown in fig. 1, for the control circuit of the charging pile system in the prior art, a bridgeless PFC circuit is used to realize the charging control function, so that the occupied area is small, but the filtering function on the common-mode interference signal is poor.
As shown in fig. 2, for the battery charge-discharge cycle control circuit in the prior art, a precision resistor is used as a current detection element, which is highly influenced by a wire, and a power MOS transistor-mounted amplifier is used to realize feedback of a charge-discharge signal, so that the output feedback signal is greatly influenced by the environment and hardware, and the feedback effect is poor.
Disclosure of Invention
Problem (A)
1. The charging device in the prior art has a poor effect of eliminating common-mode interference signals, so that the output charging efficiency and stability of the charging device are poor.
2. The charging device in the prior art has poor feedback effect on the charge-discharge cycle of the battery.
(II) technical scheme
To above-mentioned technical problem, this application provides energy storage formula electric automobile fills charge-discharge system of electric pile, including positive change charging circuit, contravariant charging circuit and the control circuit that charges that connects gradually.
The positive change charging circuit mainly comprises a power transformer, a rectifier, a filter and a voltage stabilizing circuit. The design of the partial circuit is mainly characterized in that a reference voltage circuit, a sampling comparison circuit, a current reduction protection circuit and an overheating protection circuit are introduced on the basis of a traditional alternating current-direct current conversion circuit, so that the stability and the efficiency of the vehicle-mounted battery in the charging process are ensured to a greater extent, and the purpose of protecting and prolonging the service life of the vehicle-mounted battery is achieved. The alternating current on the power grid is converted into alternating current small signal voltage through a T1 transformer, then passes through a current bridge formed by four diodes D2, D3, D6 and D7 to be converted into direct current signals, and alternating current interference signals in the direct current signals are filtered through a filter capacitor C3 and then are transmitted into a voltage stabilizing circuit designed by the system. In the voltage stabilizing circuit, since the current source is difficult to conduct automatically after the input voltage is switched on, the output voltage is difficult to establish. Therefore, a start-up circuit consisting of Q9, Q16 must be added to supply gate, base currents to current sources Q3, Q4 (these two transistors are, in fig. 4, the current source of fig. 4). When the voltage at the two ends of the resistor R3 is higher than the stable voltage of the voltage regulator tube D14, current passes through the MOS tube Q9 and the MOS tube Q16 at the moment, so that the base potential of the MOS tube Q17 rises and is conducted, and meanwhile, the current source MOS tubes Q8 and Q10 also work. Then the current mirror image of Q8 flows through Q21 to establish normal working voltage, and when the voltage of MOS pipe Q21 reaches the steady voltage value, whole circuit enters normal operating condition, and the circuit starts up. Meanwhile, the source voltage of the MOS transistor Q17 is zero and is cut off, and the connection between the starting circuit and the amplifying circuit is cut off, so that ripples and noises generated by the left circuit of the MOS transistor Q18 are prevented from influencing the reference voltage source. The reference voltage circuit comprises an MOS transistor Q18, an MOS transistor Q19, an MOS transistor Q24, a resistor R26, a resistor R27 and a resistor R36, and is mainly used for obtaining reference voltage required by the sampling comparison circuit between the resistor R27 and the resistor R32 by utilizing mutual compensation of the MOS transistor Q18 with positive temperature coefficient, the MOS transistor Q19 with negative temperature coefficient and the MOS transistor Q24. Then, the signal is sampled by the resistor R28 and the resistor R34 and is sent to the MOS transistor Q21 and the MOS transistor Q22 for voltage comparison, so that a stable output voltage is obtained. The current-reducing protection circuit consists of an MOS transistor Q15, a diode D12, a resistor R21, a resistor R24 and a resistor R25, and mainly aims to enable the adjusting transistor to work in a safe area. The resistor R24 is a current detection resistor, and due to its current detection function, the drain current of the MOS transistor Q15 is reduced, so that when the output current is too large, the output current is limited to achieve the purpose of protecting the circuit and the battery. The overheat protection circuit is composed of a diode D14, a MOS tube Q17, a MOS tube Q18, a MOS tube Q19 and necessary peripheral resistors. When the circuit works at normal temperature, the voltage drop of the resistor R26 is only about 0.4V, and the Q14 is cut off, so that the circuit works without influence. When the temperature of the circuit system rises to a certain preset limit value due to overload or environmental temperature rise, the voltage drop of the resistor R26 rises along with the rise of the working voltage of the MOS transistor Q17, so that the MOS transistor Q18 is conducted, the MOS transistor Q19 is also conducted, the base current of the MOS transistor Q12 of the adjusting transistor is shunted by the MOS transistor Q19, the output current is reduced, and the purposes of reducing circuit and battery loss of overheat protection are achieved.
The inverter discharge circuit is mainly used for converting a direct-current voltage signal of the vehicle-mounted battery into a 220V alternating-current voltage signal meeting the requirement of a power grid, and consists of a multi-resonance circuit, a positive and negative signal switch circuit and a transformer circuit. The V2 output voltage provided by the vehicle-mounted storage battery firstly passes through a Duoxiang oscillation circuit consisting of an MOS tube Q5, an MOS tube Q6, a capacitor C8, a capacitor C9 and necessary peripheral circuits to generate a rectangular wave signal, and the rectangular wave signal is output to a positive and negative signal switching circuit through an R6 resistor. The diodes D5 and D4 in the multi-harmonic vibration circuit are used for preventing the reverse breakdown of rectangular wave signals to cause the damage of an inverter circuit structure, and the capacitors C8 and C9 are used for filtering and removing unstable signals in generated square waves to reach burr signals, so that the output rectangular wave signals are smoother. After the rectangular wave signal enters the positive and negative signal switching circuit, the positive half shaft signal is switched on by the MOS tube Q3, and is divided between the resistor R10 and the resistor R19 to be output to the next stage of transformer circuit, and when the rectangular wave signal is at the negative half shaft, the MOS tube Q2 is switched on, and the signal is divided between the resistor R11 and the resistor R16 to be output to the next stage of transformer circuit. The positive and negative signals are then transmitted to a multi-stage amplifier circuit consisting of transistor Q1, transistor Q4, transistor Q11, transistor Q7, and necessary resistors and capacitors for further amplification. The separated positive and negative signals are then transmitted to the output of transistor Q4 and transistor Q7. At the moment, the divided positive and negative signals are alternately converted into a positive half shaft and a negative half shaft of the alternate sinusoidal signal by the transformer T2, and therefore the 220V sinusoidal alternating current signal meeting the requirements of the commercial power grid can be stably generated at the output end.
The charging and discharging control circuit is mainly used for automatically taking discharging measures to prolong the service life of the battery of the electric automobile when the voltage of the vehicle-mounted storage battery is overhigh in the charging process; and meanwhile, when the battery voltage is too low, the control module is used for inverting the residual electric energy to the utility grid and controlling the electric automobile to perform charging operation so as to restore the electric quantity of the battery to a normal level again. The circuit mainly comprises a vehicle-mounted battery voltage detection circuit and a charging and discharging switch circuit. The voltage V0 of the vehicle-mounted storage battery is introduced to a source electrode of an MOS (metal oxide semiconductor) tube Q28 by a potentiometer RP, a differential circuit formed by the MOS tube Q26 and the MOS tube Q28 is compared with a reference voltage, and the comparison result is output by the MOS tube Q29, when the voltage V0 of the vehicle-mounted storage battery is a normal value, the MOS tube Q29 outputs a high level, so that the triode Q25 is cut off, a winding resistor R33 and a diode D15 form a loop to release electromagnetism to control the switch K1 to be turned from a V2 end to a V1 end, and the storage battery RL starts normal forward charging; when the voltage V0 of the vehicle-mounted battery is too high or too low, the MOS tube Q29 outputs high level, so that the triode Q25 is conducted, the winding resistor R33 starts to be magnetized and generates reverse electromagnetism to the former to control the switch K1 to be in electric shock attraction, the switch K1 is switched from the V1 end to the V2 end, and the circuit system is automatically switched to the storage battery inversion discharge circuit until the V0 recovers to normal potential. When the transistor Q25 is turned off, the diode D15 and the winding resistor R33 form a reverse path to provide a leakage path for the winding resistor R33.
(III) advantageous effects
The application provides a charging and discharging system of an energy storage type electric automobile charging pile, which improves the charging stability and efficiency of a storage battery in a charging state of the charging pile; secondly, the efficient charge-discharge circulation of the battery is realized, and the electric energy can be more effectively fed back to the power grid.
Drawings
Fig. 1 is a control circuit of a charging pile system in the prior art.
Fig. 2 is a prior art battery charge-discharge cycle control circuit.
Fig. 3 is a schematic diagram of a positive charging circuit of the present application.
Fig. 4 is a schematic diagram of an inverter charging circuit according to the present application.
Fig. 5 is a schematic diagram of a charge and discharge control circuit according to the present invention.
Detailed Description
The present invention will be further described with reference to the following examples.
As shown in fig. 3, 4 and 5, the application provides a charge and discharge system of an energy storage type electric vehicle charging pile, which comprises a positive change charging circuit, an inversion charging circuit and a charge and discharge control circuit which are connected in sequence.
The positive change charging circuit mainly comprises a power transformer, a rectifier, a filter and a voltage stabilizing circuit. The design of the partial circuit is mainly characterized in that a reference voltage circuit, a sampling comparison circuit, a current reduction protection circuit and an overheating protection circuit are introduced on the basis of a traditional alternating current-direct current conversion circuit, so that the stability and the efficiency of the vehicle-mounted battery in the charging process are ensured to a greater extent, and the purpose of protecting and prolonging the service life of the vehicle-mounted battery is achieved. The alternating current on the power grid is converted into alternating current small signal voltage through a T1 transformer, then passes through a current bridge formed by four diodes D2, D3, D6 and D7 to be converted into direct current signals, and alternating current interference signals in the direct current signals are filtered through a filter capacitor C3 and then are transmitted into a voltage stabilizing circuit designed by the system. In the voltage stabilizing circuit, since the current source is difficult to conduct automatically after the input voltage is switched on, the output voltage is difficult to establish. Therefore, a start-up circuit consisting of Q9, Q16 must be added to supply gate and base currents to the current sources Q3, Q4. When the voltage at the two ends of the resistor R3 is higher than the stable voltage of the voltage regulator tube D14, current passes through the MOS tube Q9 and the MOS tube Q16 at the moment, so that the base potential of the MOS tube Q17 rises and is conducted, and meanwhile, the current source MOS tubes Q8 and Q10 also work. Then the current mirror image of Q8 flows through Q21 to establish normal working voltage, and when the voltage of MOS pipe Q21 reaches the steady voltage value, whole circuit enters normal operating condition, and the circuit starts up. Meanwhile, the source voltage of the MOS transistor Q17 is zero and is cut off, and the connection between the starting circuit and the amplifying circuit is cut off, so that ripples and noises generated by the left circuit of the MOS transistor Q18 are prevented from influencing the reference voltage source. The reference voltage circuit comprises an MOS transistor Q18, an MOS transistor Q19, an MOS transistor Q24, a resistor R26, a resistor R27 and a resistor R36, and is mainly used for obtaining reference voltage required by the sampling comparison circuit between the resistor R27 and the resistor R32 by utilizing mutual compensation of the MOS transistor Q18 with positive temperature coefficient, the MOS transistor Q19 with negative temperature coefficient and the MOS transistor Q24. Then, the signal is sampled by the resistor R28 and the resistor R34 and is sent to the MOS transistor Q21 and the MOS transistor Q22 for voltage comparison, so that a stable output voltage is obtained. The current-reducing protection circuit consists of an MOS transistor Q15, a diode D12, a resistor R21, a resistor R24 and a resistor R25, and mainly aims to enable the adjusting transistor to work in a safe area. The resistor R24 is a current detection resistor, and due to its current detection function, the drain current of the MOS transistor Q15 is reduced, so that when the output current is too large, the output current is limited to achieve the purpose of protecting the circuit and the battery. The overheat protection circuit is composed of a diode D14, a MOS tube Q17, a MOS tube Q18, a MOS tube Q19 and necessary peripheral resistors. When the circuit works at normal temperature, Q14 is cut off when the voltage drop of the resistor R26 is only about 0.4V, and the circuit works without influence. When the temperature of the circuit system rises to a certain preset limit value due to overload or environmental temperature rise, the voltage drop of the resistor R26 rises along with the rise of the working voltage of the MOS transistor Q17, so that the MOS transistor Q18 is conducted, the MOS transistor Q19 is also conducted, the base current of the MOS transistor Q12 of the adjusting transistor is shunted by the MOS transistor Q19, the output current is reduced, and the purposes of reducing circuit and battery loss of overheat protection are achieved.
Specifically, the positive-variable charging circuit comprises a transformer T1, an inductor L1, an MOS tube Q13, capacitors C2 and C3, a resistor R3 and diodes D1, D2, D3, D6 and D7, wherein a primary coil of the transformer T1 and the capacitor C2 are connected in parallel and are connected into a power grid in the positive-variable charging circuit, one end of a secondary coil of the transformer T1 is connected with a negative electrode of the diode D2, the other end of the secondary coil of the transformer T1 is connected with a negative electrode of the diode D6, the positive electrode of the diode D2 is connected with a positive electrode of the diode D6, one end of the capacitor C3 and one end of the resistor R3 respectively, the other end of the capacitor C3 is connected with one end of the resistor R3, the negative electrode of the diode D1 and a drain terminal of the MOS tube Q13 respectively, the positive electrode of the diode D1 is connected with one end of the inductor L1, the other end of the inductor L1 is connected with a negative electrode of the diode D3 and a negative electrode of the diode D7 respectively, the positive electrode of the diode D3 is connected with a negative electrode of the diode D2, and the positive electrode of the diode D7 is connected with a negative electrode of the diode D6. The positive change charging circuit comprises an output port V1, diodes D12, D13 and D14, MOS transistors Q12, Q13, Q15, Q20, Q21, Q22, Q19, Q18, Q24, Q17, Q16, Q10, Q8 and Q9, resistors R25, R28, R34, R22, R24, R21, R31, R20, R38, R44, R42, R8, R26, R27, R32, R30 and R35 and a capacitor C10, wherein the drain terminal of the MOS transistor Q13 in the positive change charging circuit is respectively connected with the drain terminal of the MOS transistor Q12, the cathode of the diode D12, one end of the resistor R42, one end of the resistor R8 and the drain terminal of the MOS transistor Q9, the other end of the resistor R8 is connected with the drain terminal of the MOS transistor Q8, the other end of the resistor R42 is connected with the drain terminal of the MOS transistor Q10, the gate of the MOS transistor Q9 is grounded, the drain terminal of the MOS transistor Q9 is respectively connected with the cathode terminal of the MOS transistor D13, the source terminal of the MOS transistor Q16 and the gate of the MOS transistor Q16 are connected with the gate of the diode Q13 and the gate of the MOS transistor Q17, the gate of the MOS transistor Q8 is connected to the gate of the MOS transistor Q10, the source of the MOS transistor Q8, the drain of the MOS transistor Q16, the drain of the MOS transistor Q17, the cathode of the diode D14, the drain of the MOS transistor Q15, the gate of the MOS transistor Q12, the anode of the diode D12, one end of the resistor R44, one end of the resistor R20, and one end of the resistor R21, the other end of the resistor R44 is connected to the drain of the MOS transistor Q19, the other end of the resistor R20 is connected to the drain of the MOS transistor Q20 and one end of the capacitor C10, the other end of the capacitor C10 is connected to the gate of the MOS transistor Q20 and one end of the resistor R31, the other end of the resistor R31 is connected to one end of the resistor R28 and one end of the resistor R34, the other end of the resistor R34 is grounded, the other end of the resistor R28 is connected to the output port V1, the anode of the diode D14 is grounded, the gate of the MOS transistor Q16 is connected to the gate of the MOS transistor Q17, the source of the MOS transistor Q17 is connected to the drain of the resistor Q18, the other end of the resistor R26 is connected to one end of the resistor R27 and the gate of the MOS transistor Q18, the other end of the resistor R27 is connected to one end of the resistor R32 and one end of the resistor R30, the other end of the resistor R32 is connected to the gate of the MOS transistor Q24, the gate of the MOS transistor Q22 and the drain of the MOS transistor Q24, the other end of the resistor R30 is connected to the gate of the MOS transistor Q21, the source of the MOS transistor Q18 is connected to one end of the resistor R35 and the gate of the MOS transistor Q19, the other end of the resistor R35 is grounded, the source of the MOS transistor Q19 is grounded, the source of the MOS transistor Q24 is grounded, the gate of the MOS transistor Q13 is connected to the source of the MOS transistor Q12, the drain of the MOS transistor Q21 and one end of the resistor R22, the other end of the resistor R22 is connected to the source of the MOS transistor Q15, one end of the resistor R25 and the output port V1, the other end of the resistor R25 is connected to one end of the source of the transistor Q13, one end of the resistor R24 and the drain of the transistor Q21, the drain of the resistor R22 are connected to the drain of the transistor Q22, and the drain of the resistor Q22 is connected to the drain of the transistor Q22.
The inverter discharge circuit is mainly used for converting a direct-current voltage signal of the vehicle-mounted battery into a 220V alternating-current voltage signal meeting the requirement of a power grid, and consists of a multi-resonance circuit, a positive and negative signal switch circuit and a transformer circuit. The V2 output voltage provided by the vehicle-mounted storage battery firstly passes through a Duoxiang oscillation circuit consisting of an MOS tube Q5, an MOS tube Q6, a capacitor C8, a capacitor C9 and necessary peripheral circuits to generate a rectangular wave signal, and the rectangular wave signal is output to a positive and negative signal switching circuit through an R6 resistor. The diodes D5 and D4 in the multi-harmonic vibration circuit are used for preventing the reverse breakdown of rectangular wave signals to cause the damage of an inverter circuit structure, and the capacitors C8 and C9 are used for filtering and removing unstable signals in generated square waves to reach burr signals, so that the output rectangular wave signals are smoother. After the rectangular wave signal enters the positive and negative signal switching circuit, the MOS tube Q3 is conducted when the positive half shaft signal is met, and voltage division is output to the next stage of transformer circuit between the resistor R10 and the resistor R19, and when the rectangular wave signal is in the negative half shaft, the MOS tube Q2 is conducted, and the signal is output to the next stage of transformer circuit through voltage division between the resistor R11 and the resistor R16. The positive and negative signals are then transmitted to a multi-stage amplifier circuit consisting of transistors Q1, Q4 and Q11, Q7 and necessary resistors and capacitors for further amplification. The separated positive and negative signals are then transmitted to the transistor Q4 and transistor Q7 outputs. At the moment, the divided positive and negative signals are converted into a positive half shaft and a negative half shaft of an alternating sinusoidal signal from the transformer T2 alternately, and therefore a 220V sinusoidal alternating current signal meeting the requirements of the utility grid can be stably generated at the output end.
Specifically, the inverter charging circuit comprises a transformer T2, triodes Q1, Q4, Q7, Q11, capacitors C4, C7, resistors R1, R5, R9, and R23, an output port V2 of the inverter charging circuit, a primary coil of the transformer T2 in the circuit is connected in parallel with the capacitor C4 and is connected to a power grid, a tap of a negative coil of the transformer T2 is connected to one ends of the output port V2 and the resistor R23, the other end of the resistor R23 is connected to a collector of the triode Q11, the capacitor C7 is connected in parallel to two ends of a secondary coil of the transformer T2, one end of the capacitor C7 is connected to a collector of the triode Q4, the other end of the capacitor C7 is connected to an emitter of the triode Q7, an emitter of the triode Q4 is grounded, a collector of the triode D7 is grounded, one end of the resistor R1 is connected to the output port V1, the other end of the resistor Q1 is connected to a collector of the triode Q1, emitters of the triode Q1 are connected to a base of the triode Q4 and one end of the resistor R5, the other end of the resistor R5 is grounded, one end of the resistor R9 is connected to a base of the triode Q11, and a base of the triode Q7 are connected to the base of the triode Q7. The inverter charging circuit comprises an output port V1, diodes D4, D5, D11, D10 and D19, MOS transistors Q5, Q6, Q2 and Q3, triodes Q1 and Q11, capacitors C5, C6, C8 and C9, resistors R2, R4, R6, R12, R13, R14, R15, R11, R16, R17, R18, R10 and R19, wherein the output port V2 of the inverter charging circuit is respectively connected with a drain terminal of the MOS transistor Q3, a drain terminal of the MOS transistor Q2, a middle anode of the diode D5 and an anode of the diode D4, a grid of the MOS transistor Q3 is respectively connected with one end of the resistor R2 and one end of the resistor R18, the other end of the resistor R18 is connected with a cathode terminal of the diode D10, an anode of the diode D10 is grounded, the other end of the resistor R2 is respectively connected with one end of the MOS transistor Q2, one end of the resistor R11 and one end of the capacitor C5, and a cathode of the capacitor C19 of the diode D6 and the capacitor C19, the other end of the resistor R11 is respectively connected with one end of a resistor R16 and the base electrode of the triode Q11, the other end of the resistor R16 is grounded, the other end of the capacitor C6 is respectively connected with the source end of the MOS tube Q3, one end of the resistor R10 and one end of the resistor R4, the other end of the resistor R10 is respectively connected with one end of a resistor R19 and the base electrode of the triode Q1, the other end of the resistor R19 is grounded, the other end of the resistor R4 is respectively connected with the grid electrode of the MOS tube Q2 and one end of the resistor R17, the other end of the resistor R17 is connected with the negative electrode of the diode D11, the positive electrode of the diode D11 is grounded, one end of the resistor R6 is connected with the positive electrode of the diode D19, the other end of the resistor R6 is respectively connected with the source end of the MOS tube Q6, one end of the resistor R15 and one end of the capacitor C9, the other end of the resistor R15 is grounded, the other end of the capacitor C9 is respectively connected with one end of the grid electrode of the resistor R14 and the MOS tube Q5, the other end of the resistor R14 is grounded, the negative electrode of the diode D5 is connected with the drain end of the MOS tube Q6, the grid of MOS pipe Q6 is connected with one end of electric capacity C8, one end of resistance R13 respectively, and the other end of resistance R13 ground connection, and the other end of electric capacity C8 is connected with the source end of MOS pipe Q5, one end of resistance R12 respectively, and the other end of resistance R12 ground connection, and the negative pole of diode D4 is connected with the drain-source terminal of MOS pipe Q5.
The charging and discharging control circuit is mainly used for automatically taking discharging measures to prolong the service life of the battery of the electric automobile when the voltage of the vehicle-mounted storage battery is overhigh in the charging process; and meanwhile, when the battery voltage is too low, the control module is used for inverting the residual electric energy to the utility grid and controlling the electric automobile to perform charging operation so as to restore the electric quantity of the battery to a normal level again. The circuit mainly comprises a vehicle-mounted battery voltage detection circuit and a charging and discharging switch circuit. The voltage V0 of the vehicle-mounted storage battery is introduced to a source electrode of an MOS (metal oxide semiconductor) tube Q28 by a potentiometer RP, a differential circuit formed by the MOS tube Q26 and the MOS tube Q28 is compared with a reference voltage, and the comparison result is output by the MOS tube Q29, when the voltage V0 of the vehicle-mounted storage battery is a normal value, the MOS tube Q29 outputs a high level, so that the triode Q25 is cut off, a winding resistor R33 and a diode D15 form a loop to release electromagnetism to control the switch K1 to be turned from a V2 end to a V1 end, and the storage battery RL starts normal forward charging; when the voltage V0 of the vehicle-mounted battery is too high or too low, the MOS tube Q29 outputs high level, so that the triode Q25 is conducted, the winding resistor R33 starts to be magnetized and generates reverse electromagnetism to the winding resistor R to control the switch K1 to be in electric shock attraction, the switch K1 is turned from the end V1 to the end V2, and the circuit system is automatically switched to the inverter discharge circuit of the storage battery until the voltage V0 recovers to normal potential. When the transistor Q25 is turned off, the diode D15 and the winding resistor R33 form a reverse path to provide a leakage path for the winding resistor R33.
Specifically, the charge and discharge control circuit comprises input ports V1 and V2, an output port V0, a winding resistor R33, a switch K1, a triode Q25, MOS tubes Q26, Q28, Q29, Q14, Q23 and Q27, diodes D16, D15, D17, VD1 and D18, a potentiometer RP, resistors R7, R29, R43, R37, R41, R36, R39, R40 and RL, wherein the input ports V1 and V2 of the charge and discharge control circuit are respectively connected with a No. 3 interface and a No. 1 interface of the switch K1, a No. 2 interface of the switch K1 is respectively connected with the output port V0 and one end of the resistor RL, the other end of the resistor RL is grounded, one end of the winding resistor R33 is connected with a high-level VCC, the other end of the winding resistor R33 is respectively connected with an anode of the diode D15 and a collector of the triode Q25, one end of the resistor R27 is connected with the high-level VCC, the other end of the diode D15 is connected with a cathode, one end of the emitter of the resistor R40 is connected with the triode Q25, the other end of the resistor R is grounded, the base of the triode Q25 is respectively connected with one end of a resistor R36 and one end of a resistor R39, the other end of the resistor R39 is grounded, the other end of the resistor R36 is connected with the drain of a MOS transistor Q29, the source of the MOS transistor Q29 is grounded, the grid of the MOS transistor Q29 is respectively connected with the drain of a MOS transistor Q27 and one end of a resistor R43, the other end of the resistor R43 is respectively connected with one end of a resistor R7 and the cathode of a diode D16, the anode of the diode D16 is connected with a high level VCC, the other end of the resistor R7 is respectively connected with the drain of a MOS transistor Q28, the drain of a MOS transistor Q26 and one end of the resistor R29, the other end of the resistor R29 is respectively connected with the cathode of a diode VD1 and the anode of a diode D17, the cathode of the diode D17 is connected with the grid of the MOS transistor Q28, the source of the MOS transistor Q28 is respectively connected with the drain of a MOS transistor Q23 and the grid of the MOS transistor Q27, the ground of the MOS transistor Q23, the anode of a diode VD1 is connected with one end of a resistor R41, the other end of the resistor R41 is grounded, one end of the resistor RP is connected with the output port V0, the other end of the resistor RP is grounded, the slider end of the potentiometer RP is connected with the anode of the diode D18, the cathode of the diode D18 is connected with the gate of the MOS transistor Q26, the source end of the MOS transistor Q26 is respectively connected with the drain end of the MOS transistor Q14, the gate of the MOS transistor Q14 and the gate of the MOS transistor Q23, and the source end of the MOS transistor Q14 is grounded.
While one embodiment of the present invention has been described in detail, the description is only a preferred embodiment of the present invention and should not be taken as limiting the scope of the invention. All equivalent changes and modifications made within the scope of the present invention shall fall within the scope of the present invention.

Claims (5)

1. Energy storage formula electric automobile fills charge-discharge system of electric pile, including positive change charging circuit, contravariant charging circuit and the control circuit that charges that connects gradually, its characterized in that: the positive-change charging circuit comprises a transformer T1, an inductor L1, an MOS tube Q13, capacitors C2 and C3, a resistor R3 and diodes D1, D2, D3, D6 and D7, wherein a primary coil of the transformer T1 and the capacitor C2 are connected in parallel and are connected into a power grid in the positive-change charging circuit, one end of a secondary coil of the transformer T1 is connected with the cathode of the diode D2, the other end of the secondary coil of the transformer T1 is connected with the cathode of the diode D6, the anode of the diode D2 is respectively connected with the anode of the diode D6, one end of the capacitor C3 and one end of the resistor R3, the other end of the capacitor C3 is respectively connected with the cathode of the resistor R3, the cathode of the diode D1 and the drain of the MOS tube Q13, the anode of the diode D1 is respectively connected with one end of the inductor L1, the other end of the inductor L1 is respectively connected with the cathode of the diode D3 and the cathode of the diode D7, the anode of the diode D3 is connected with the cathode of the diode D2, and the anode of the diode D7 is connected with the cathode of the diode D6.
2. The energy storage type electric vehicle charging pile charging and discharging system according to claim 1, characterized in that: the positive change charging circuit comprises an output port V1, diodes D12, D13 and D14, MOS transistors Q12, Q13, Q15, Q20, Q21, Q22, Q19, Q18, Q24, Q17, Q16, Q10, Q8 and Q9, resistors R25, R28, R34, R22, R24, R21, R31, R20, R38, R44, R42, R8, R26, R27, R32, R30 and R35 and a capacitor C10, wherein the drain terminal of the MOS transistor Q13 in the positive change charging circuit is respectively connected with the drain terminal of the MOS transistor Q12, the cathode of the diode D12, one end of the resistor R42, one end of the resistor R8 and the drain terminal of the MOS transistor Q9, the other end of the resistor R8 is connected with the drain terminal of the MOS transistor Q8, the other end of the resistor R42 is connected with the drain terminal of the MOS transistor Q10, the gate of the MOS transistor Q9 is grounded, the drain terminal of the MOS transistor Q9 is respectively connected with the cathode terminal of the MOS transistor D13, the source terminal of the MOS transistor Q16 and the gate of the MOS transistor Q16 are connected with the gate of the diode Q13 and the gate of the MOS transistor Q17, the gate of the MOS transistor Q8 is connected to the gate of the MOS transistor Q10, the source of the MOS transistor Q8, the drain of the MOS transistor Q16, the drain of the MOS transistor Q17, the cathode of the diode D14, the drain of the MOS transistor Q15, the gate of the MOS transistor Q12, the anode of the diode D12, one end of the resistor R44, one end of the resistor R20, and one end of the resistor R21, the other end of the resistor R44 is connected to the drain of the MOS transistor Q19, the other end of the resistor R20 is connected to the drain of the MOS transistor Q20 and one end of the capacitor C10, the other end of the capacitor C10 is connected to the gate of the MOS transistor Q20 and one end of the resistor R31, the other end of the resistor R31 is connected to one end of the resistor R28 and one end of the resistor R34, the other end of the resistor R34 is grounded, the other end of the resistor R28 is connected to the output port V1, the anode of the diode D14 is grounded, the gate of the MOS transistor Q16 is connected to the gate of the MOS transistor Q17, the source of the MOS transistor Q17 is connected to the drain of the resistor Q18, the other end of the resistor R26 is connected to one end of the resistor R27 and the gate of the MOS transistor Q18, the other end of the resistor R27 is connected to one end of the resistor R32 and one end of the resistor R30, the other end of the resistor R32 is connected to the gate of the MOS transistor Q24, the gate of the MOS transistor Q22 and the drain of the MOS transistor Q24, the other end of the resistor R30 is connected to the gate of the MOS transistor Q21, the source of the MOS transistor Q18 is connected to one end of the resistor R35 and the gate of the MOS transistor Q19, the other end of the resistor R35 is grounded, the source of the MOS transistor Q19 is grounded, the source of the MOS transistor Q24 is grounded, the gate of the MOS transistor Q13 is connected to the source of the MOS transistor Q12, the drain of the MOS transistor Q21 and one end of the resistor R22, the other end of the resistor R22 is connected to the source of the MOS transistor Q15, one end of the resistor R25 and the output port V1, the other end of the resistor R25 is connected to one end of the source of the transistor Q13, one end of the resistor R24 and the drain of the transistor Q21, the drain of the resistor R22 are connected to the drain of the transistor Q22, and the drain of the resistor Q22 is connected to the drain of the transistor Q22.
3. The charging and discharging system of the energy storage type electric vehicle charging pile according to claim 1, characterized in that: the inverter charging circuit comprises a transformer T2, triodes Q1, Q4, Q7, Q11, capacitors C4 and C7, resistors R1, R5, R9 and R23, an inverter charging output port V2 is provided, a primary coil of the transformer T2 is connected with the capacitors C4 in parallel and is connected into a power grid, a tap of a negative coil of the transformer T2 is connected with one ends of the output port V2 and the resistor R23 respectively, the other end of the resistor R23 is connected with a collector of the triode Q11, the capacitors C7 are connected with two ends of a secondary coil of the transformer T2 in parallel, one end of the capacitor C7 is connected with the collector of the triode Q4, the other end of the capacitor C7 is connected with an emitter of the triode Q7, an emitter of the triode Q4 is grounded, a collector of the triode D7 is grounded, one end of the resistor R1 is connected with the output port V1, the other end of the resistor R1 is connected with the collector of the triode Q1, emitters of the triode Q1 are connected with a base of the triode Q4 and one end of the resistor R5 respectively, the other end of the resistor R5 is grounded, one end of the emitter of the resistor R9 is connected with the other end of the triode Q11 and the base of the triode Q7, and the emitter of the triode Q9 are grounded respectively.
4. The energy storage type electric vehicle charging pile charging and discharging system according to claim 1, characterized in that: the inverter charging circuit comprises an output port V1, diodes D4, D5, D11, D10 and D19, MOS (metal oxide semiconductor) tubes Q5, Q6, Q2 and Q3, triodes Q1 and Q11, capacitors C5, C6, C8 and C9, resistors R2, R4, R6, R12, R13, R14, R15, R11, R16, R17, R18, R10 and R19, wherein the output port V2 of the inverter charging circuit is respectively connected with the drain terminal of the MOS tube Q3, the drain terminal of the MOS tube Q2, the middle anode of the diode D5 and the anode of the diode D4, the grid of the MOS tube Q3 is respectively connected with one end of the resistor R2 and one end of the resistor R18, the other end of the resistor R18 is connected with the cathode of the diode D10, the anode of the diode D10 is grounded, the other end of the resistor R2 is respectively connected with the source terminal of the MOS tube Q2, one end of the resistor R11 and one end of the capacitor C5, the other end of the capacitor C5 is respectively connected with the cathode of the diode D19 and one end of the capacitor C6, the other end of the resistor R11 is respectively connected with one end of a resistor R16 and a base electrode of the triode Q11, the other end of the resistor R16 is grounded, the other end of the capacitor C6 is respectively connected with a source end of the MOS tube Q3, one end of the resistor R10 and one end of the resistor R4, the other end of the resistor R10 is respectively connected with one end of a resistor R19 and a base electrode of the triode Q1, the other end of the resistor R19 is grounded, the other end of the resistor R4 is respectively connected with a grid electrode of the MOS tube Q2 and one end of the resistor R17, the other end of the resistor R17 is connected with a negative electrode of the diode D11, an anode of the diode D11 is grounded, one end of the resistor R6 is connected with an anode of the diode D19, the other end of the resistor R6 is respectively connected with a source end of the MOS tube Q6, one end of the resistor R15 and one end of the capacitor C9, the other end of the resistor R15 is grounded, the other end of the capacitor C9 is respectively connected with one end of the resistor R14 and a grid electrode of the MOS tube Q5, the other end of the resistor R14 is grounded, the cathode of the diode D5 is connected with a drain end of the MOS tube Q6, the grid of MOS pipe Q6 is connected with one end of electric capacity C8, one end of resistance R13 respectively, and the other end of resistance R13 ground connection, and the other end of electric capacity C8 is connected with the source end of MOS pipe Q5, one end of resistance R12 respectively, and the other end of resistance R12 ground connection, and the negative pole of diode D4 is connected with the drain-source terminal of MOS pipe Q5.
5. The energy storage type electric vehicle charging pile charging and discharging system according to claim 1, characterized in that: the charge and discharge control circuit comprises input ports V1 and V2, an output port V0, a winding resistor R33, a switch K1, a triode Q25, MOS transistors Q26, Q28, Q29, Q14, Q23 and Q27, diodes D16, D15, D17, VD1 and D18, a potentiometer RP, resistors R7, R29, R43, R37, R41, R36, R39, R40 and RL, wherein the input ports V1 and V2 in the charge and discharge control circuit are respectively connected with a No. 3 interface and a No. 1 interface of the switch K1, a No. 2 interface of the switch K1 is respectively connected with the output port V0 and one end of the resistor RL, the other end of the resistor RL is grounded, one end of the winding resistor R33 is connected with a high level VCC, the other end of the winding resistor R33 is respectively connected with the anode of a diode D15 and the collector of the triode Q25, one end of the resistor R27 is connected with the high level VCC, the other end of the winding resistor R40 is connected with the emitter of the triode Q25, the other end of the winding resistor R is grounded, the base electrode of the triode Q25 is respectively connected with one end of a resistor R36 and one end of a resistor R39, the other end of the resistor R39 is grounded, the other end of the resistor R36 is connected with the drain terminal of a MOS tube Q29, the source terminal of the MOS tube Q29 is grounded, the grid electrode of the MOS tube Q29 is respectively connected with the drain terminal of a MOS tube Q27 and one end of a resistor R43, the other end of the resistor R43 is respectively connected with one end of a resistor R7 and the cathode of a diode D16, the anode of the diode D16 is connected with a high level VCC, the other end of the resistor R7 is respectively connected with the drain terminal of a MOS tube Q28, the drain terminal of a MOS tube Q26 and one end of the resistor R29, the other end of the resistor R29 is respectively connected with the cathode of a diode VD1 and the anode of a diode D17, the cathode of the diode D17 is connected with the grid electrode of the MOS tube Q28, the source terminal of the MOS tube Q28 is respectively connected with the drain terminal of a MOS tube Q23 and the grid electrode of the MOS tube Q27, the ground of the MOS tube Q23 is grounded, and the anode of the diode VD1 is connected with one end of a resistor R41, the other end of the resistor R41 is grounded, one end of the resistor RP of the potentiometer is connected with the output port V0, the other end of the resistor RP is grounded, the slide sheet end of the potentiometer RP is connected with the anode of the diode D18, the cathode of the diode D18 is connected with the grid of the MOS transistor Q26, the source end of the MOS transistor Q26 is connected with the drain end of the MOS transistor Q14, the grid of the MOS transistor Q14 and the grid of the MOS transistor Q23 respectively, and the source end of the MOS transistor Q14 is grounded.
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CN210970736U (en) * 2019-09-16 2020-07-10 湖北省电力装备有限公司 Charging management system of charging pile
CN113602128A (en) * 2021-07-06 2021-11-05 李加朋 Wide voltage output new energy automobile fills electric pile device
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10335944A (en) * 1997-05-30 1998-12-18 Sanyo Electric Co Ltd Power circuit
US20130033225A1 (en) * 2010-05-18 2013-02-07 Baichou Yu Lossless Charger
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CN109326067A (en) * 2018-12-03 2019-02-12 陕西理工大学 A kind of electronic starting circuit
CN210970736U (en) * 2019-09-16 2020-07-10 湖北省电力装备有限公司 Charging management system of charging pile
CN210629144U (en) * 2019-10-18 2020-05-26 云南电网有限责任公司曲靖供电局 Storage battery pack discharging device
CN113602128A (en) * 2021-07-06 2021-11-05 李加朋 Wide voltage output new energy automobile fills electric pile device
CN114640154A (en) * 2022-03-07 2022-06-17 深圳市唯视拓展智能技术有限公司 Carry on management system's new energy automobile battery

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