CN203984068U - A kind of electric car charger - Google Patents
A kind of electric car charger Download PDFInfo
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- CN203984068U CN203984068U CN201420470881.9U CN201420470881U CN203984068U CN 203984068 U CN203984068 U CN 203984068U CN 201420470881 U CN201420470881 U CN 201420470881U CN 203984068 U CN203984068 U CN 203984068U
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Abstract
A kind of electric car charger, comprise charhing unit to charge in batteries, to the discharge cell of battery discharging, control charhing unit and the out-of-work shutdown control unit of discharge cell according to the terminal voltage of storage battery, described charhing unit is a single-phase half-wave SCR rectification circuit, in the suitable charging voltage of the positive half cycle of civil power; Described discharge cell at the negative half period of civil power to battery discharging; The voltage that controllable silicon is exported is realized by changing the angle of flow, compares with switch power supply type pressure regulation, and the power loss on controllable silicon is more much lower than the switching tube in Switching Power Supply; Simultaneously SCR rectification circuit element used is less, except reducing, has also reduced failure rate material cost.Compare with line-frequency transformer type charger, adopt controllable silicon can greatly dwindle the volume of charger to charge in batteries, the use that can save silicon steel sheet and enamelled wire material simultaneously.Circuit structure of the present utility model is simple and can meet the requirement to charge in batteries.
Description
Technical field
The utility model relates to a kind of electric car charger, especially relates to a kind of charger of single-phase half-wave silicon controlled rectifier.
Background technology
Electric motor car in use needs its storage battery to charge, and charger is in the market mainly two kinds of line-frequency transformer type charger and switch power supply type chargers, and line-frequency transformer type charger circuit is simple, but volume is larger, and efficiency is low; Switch power supply type charger volume is little, and efficiency is high, but circuit structure complicated production cost is higher.
Utility model content
The utility model provides a kind of electric car charger, and its circuit structure is simple, can meet on the basis of charging requirement, reduces manufacturing cost.
The technical solution of the utility model is, electric car charger comprise charhing unit to charge in batteries, to the discharge cell of battery discharging, to the terminal voltage signal of storage battery carry out the signal filtering unit of filtering, according to signal controlling charhing unit and the out-of-work shutdown control unit of discharge cell of the output of signal filtering unit, and provide the stabilized voltage power supply of working power for electric car charger;
It is characterized in that, described charhing unit is a single-phase half-wave SCR rectification circuit, it comprises the first single-phase silicon-controlled SCR2 and circuits for triggering, the first single-phase silicon-controlled anode connects the live wire of civil power, the first single-phase silicon-controlled negative electrode connects the positive pole of storage battery E, and the negative pole of storage battery connects the zero line of civil power; Circuits for triggering are carried start pulse signal at the just half circumferential first single-phase silicon-controlled control utmost point of civil power, make the suitable charging voltage of the first single-phase silicon-controlled output; Described discharge cell at the negative half period of civil power to battery discharging;
Described circuits for triggering are single-node transistor self-oscillating circuit, and it comprises unijunction transistor T2, pulse transformer B2; The synchronizing signal that the emitter of unijunction transistor passes through respectively capacitor C 21 ground connection and accepts from civil power by resistance R 23, the second base stage of unijunction transistor meets the anodal Vdd of stabilized voltage power supply by resistance R 22, the first base stage of unijunction transistor connects primary coil one end of pulse transformer, the primary coil other end ground connection of pulse transformer, the secondary coil two ends of pulse transformer are connected with negative electrode with the control utmost point of the first single-phase silicon-controlled SCR2 respectively;
The time-base integrated circuit IC3 that described shutdown control unit is NE555 by model, resistance R 31-R33, capacitor C 3 form, the pin 6 of time-base integrated circuit IC3 connects the anodal of capacitor C 6 by resistance R 31 respectively and by resistance R 32, connects the pin 2 of time-base integrated circuit IC3, and the pin 2 of time-base integrated circuit IC3 is by resistance R 33 ground connection; The pin 7 of time-base integrated circuit IC3, for charging stop signal output, is connected with the emitter of unijunction transistor, and the pin 3 of time-base integrated circuit IC3 is discharge stop signal output; The pin 8,4 of time-base integrated circuit IC3 meets the anodal Vdd of stabilized voltage power supply, and the pin 5 of time-base integrated circuit IC3 is by capacitor C 3 ground connection;
Described discharge cell comprises that Schmidt trigger, discharge pulse form circuit and power amplifier;
In described Schmidt trigger, the annexation of each element is, the pin 6 of time-base integrated circuit IC4 connects the anodal of capacitor C 6 by resistance R 41 respectively and by resistance R 42, connects the pin 2 of time-base integrated circuit IC4, and the pin 2 of time-base integrated circuit IC4 is by resistance R 53 ground connection; The pin 7 of time-base integrated circuit IC4 is discharge control signal output; The pin 8,4 of time-base integrated circuit IC4 connects the pin 3 of time-base integrated circuit IC3, and the pin 5 of time-base integrated circuit IC4 is by capacitor C 4 ground connection;
The annexation that described discharge pulse forms each element in circuit is, the anode of the second single-phase silicon-controlled SCR5 is by light-emitting diode, the resistance R 52 connecting to neutral lines of optocoupler GR1, the anode of the second single-phase silicon-controlled SCR5 line of starting to exchange fire, the anode of the second single-phase silicon-controlled SCR5 is successively by capacitor C 5, resistance R 51, diode D51 connecting to neutral line, and the control utmost point of the second single-phase silicon-controlled SCR5 connects the node between capacitor C 5 and resistance R 51 by diac D52; The phototriode output discharge pulse signal of optocoupler GR1;
In described power amplifier, the annexation of each element is, the base stage of triode T51 is by the phototriode of optocoupler GR1, the pin 7 that resistance R 53 meets time-base integrated circuit IC4, the base stage of triode T51 connects the positive pole of storage battery by resistance R 54, the emitter of triode T51 connects the positive pole of storage battery, the collector electrode of triode T51 is respectively by resistance R 55 ground connection with connect the base stage of triode T52 by resistance R 56, and the collector electrode of triode T52 connects the positive pole of storage battery by resistance R 57.
The utility model adopt between civil power positive half period to charge in batteries technical scheme to battery discharging between civil power negative half-cycle, can prevent reliably the simultaneous phenomenon of action of charge and discharge; The voltage that controllable silicon is exported is realized by changing the angle of flow, compares with switch power supply type pressure regulation, and the power loss on controllable silicon is more much lower than the switching tube in Switching Power Supply; Simultaneously SCR rectification circuit element used is less, except reducing, has also reduced failure rate material cost.Compare with line-frequency transformer type charger, adopt controllable silicon can greatly dwindle the volume of charger to charge in batteries, the use that can save silicon steel sheet and enamelled wire material simultaneously.Circuit structure of the present utility model is simple and can meet the requirement to charge in batteries.
Accompanying drawing explanation
Fig. 1 is circuit block diagram of the present utility model.
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
Now contrast accompanying drawing embodiment of the present utility model is described.
A kind of electric car charger comprises charhing unit to charge in batteries, makes the out-of-work shutdown control unit of charhing unit and discharge cell to the discharge cell of battery discharging, after storage battery full charge, accumulator voltage signal is carried out the signal filtering unit of filtering and provides the stabilized voltage power supply of working power for electric car charger.
Described charhing unit is a single-phase half-wave SCR rectification circuit, it comprises the first single-phase silicon-controlled SCR2 and circuits for triggering, the first single-phase silicon-controlled anode connects the live wire of civil power, and the first single-phase silicon-controlled negative electrode connects the positive pole of storage battery E, and the negative pole of storage battery connects the zero line of civil power; The zero line of civil power and the ground in charger circuit are connected.
Described circuits for triggering are single-node transistor self-oscillating circuit, and it comprises unijunction transistor T2, transformer B1, pulse transformer B2, the primary coil of transformer B1 is electrically connected to city, one end of its secondary coil is by the diode D21 connecting successively, resistance R 21, voltage stabilizing didoe DW2 ground connection, on voltage stabilizing didoe DW2, form synchronizing signal, the emitter of unijunction transistor is respectively by capacitor C 21 ground connection with connect the negative electrode of voltage stabilizing didoe DW2 by resistance R 23, the second base stage of unijunction transistor meets the anodal Vdd of stabilized voltage power supply by resistance R 22, the first base stage of unijunction transistor connects primary coil one end of pulse transformer, the primary coil other end ground connection of pulse transformer, the secondary coil two ends of pulse transformer are connected with negative electrode with the control utmost point of the first single-phase silicon-controlled SCR2 respectively, the pulse signal of the secondary coil output of pulse transformer triggers the first single-phase silicon-controlled SCR2 conducting, resistance R 23 and capacitor C 21 form a charge circuit, when the voltage in capacitor C 21 rises to certain value, unijunction transistor conducting produces pulse on pulse transformer, and resistance can change the first single-phase silicon-controlled angle of flow, thereby changes the voltage of the first single-phase silicon-controlled output.
The voltage that controllable silicon is exported is realized by changing the angle of flow, compares with switch power supply type pressure regulation, and the power loss on controllable silicon is more much lower than the switching tube in Switching Power Supply; Simultaneously SCR rectification circuit element used is less, except reducing, has also reduced failure rate material cost.Compare with line-frequency transformer type charger, adopt controllable silicon can greatly dwindle the volume of charger to charge in batteries, the use that can save silicon steel sheet and enamelled wire material simultaneously.
Described shutdown control unit is a Schmidt trigger, the time-base integrated circuit IC3 that it is NE555 by model, resistance R 31-R33, capacitor C 3 form, the pin 6 of time-base integrated circuit IC3 connects the anodal of capacitor C 6 by resistance R 31 respectively and by resistance R 32, connects the pin 2 of time-base integrated circuit IC3, and the pin 2 of time-base integrated circuit IC3 is by resistance R 33 ground connection; The pin 7 of time-base integrated circuit IC3, for charging stop signal output, is connected with the emitter of unijunction transistor, and the pin 3 of time-base integrated circuit IC3 is discharge stop signal output; The pin 8,4 of time-base integrated circuit IC3 meets the anodal Vdd of stabilized voltage power supply, and the pin 5 of time-base integrated circuit IC3 is by capacitor C 3 ground connection;
Voltage in capacitor C 6 is corresponding to the terminal voltage of storage battery, resistance R 31-R33 forms a bleeder circuit terminal voltage of storage battery is carried out to dividing potential drop, the voltage that the voltage forming on the pin 6 of time-base integrated circuit IC3 forms a little more than pin 2, both voltage differences are the hysteresis voltage of Schmidt trigger, after storage battery full charge, its terminal voltage should rise to the value of regulation, voltage on the pin 6 of time-base integrated circuit IC3 is greater than reference voltage, and (reference voltage is produced automatically by time-base integrated circuit, the operating voltage of it and time-base integrated circuit is proportional), at this moment the level of the pin 3 of time-base integrated circuit IC3 is low by high tumble, make discharge cell stop the electric discharge to storage battery, and the pin 7 of time-base integrated circuit IC3 becomes conducting state over the ground from cut-off state over the ground, make the emitter shorted to earth of unijunction transistor in circuits for triggering, circuits for triggering failure of oscillations triggerless output of pulse signal, thus charhing unit is stopped to charge in batteries.Adopt Schmidt trigger to compare differentiation to the terminal voltage of storage battery, can prevent from making output signal shake because of the fluctuation of the terminal voltage of storage battery.
The Schmidt trigger that time-base integrated circuit IC4, the resistance R 41-R43 that it is NE555 that described discharge cell comprises by model, capacitor C 4 form, the discharge pulse being comprised of the second single-phase silicon-controlled SCR5, diac D52, optocoupler GR1, resistance R 51-R52, capacitor C 5 forms circuit, the power amplifier being comprised of triode T51-T52, resistance R 53-R57;
In described Schmidt trigger, the annexation of each element is, the pin 6 of time-base integrated circuit IC4 connects the anodal of capacitor C 6 by resistance R 41 respectively and by resistance R 42, connects the pin 2 of time-base integrated circuit IC4, and the pin 2 of time-base integrated circuit IC4 is by resistance R 53 ground connection; The pin 7 of time-base integrated circuit IC4 is discharge control signal output; The pin 8,4 of time-base integrated circuit IC4 connects the pin 3 of time-base integrated circuit IC3, and the pin 5 of time-base integrated circuit IC4 is by capacitor C 4 ground connection;
The annexation that described discharge pulse forms each element in circuit is, the anode of the second single-phase silicon-controlled SCR5 is by light-emitting diode, the resistance R 52 connecting to neutral lines of optocoupler GR1, the anode of the second single-phase silicon-controlled SCR5 line of starting to exchange fire, the anode of the second single-phase silicon-controlled SCR5 is successively by capacitor C 5, resistance R 51, diode D51 connecting to neutral line, and the control utmost point of the second single-phase silicon-controlled SCR5 connects the node between capacitor C 5 and resistance R 51 by diac D52; The phototriode output discharge pulse signal of optocoupler GR1;
In described power amplifier, the annexation of each element is, the base stage of triode T51 is by the phototriode of optocoupler GR1, the pin 7 that resistance R 53 meets time-base integrated circuit IC4, the base stage of triode T51 connects the positive pole of storage battery by resistance R 54, the emitter of triode T51 connects the positive pole of storage battery, the collector electrode of triode T51 is respectively by resistance R 55 ground connection with connect the base stage of triode T52 by resistance R 56, and the collector electrode of triode T52 connects the positive pole of storage battery by resistance R 57;
The operation principle of discharge cell is, described Schmidt trigger detects the terminal voltage of storage battery, when terminal voltage be greater than electric discharge assigned voltage constantly the pin 7 of base integrated circuit (IC) 4 from cut-off state over the ground, become conducting state over the ground, form one of triode T51 turn-on condition; The second single-phase silicon-controlled SCR5 conducting when the alternating voltage of input is negative half period, the light-emitting diode of optocoupler GR1 has electric current to pass through, and phototriode conducting forms two of triode T51 turn-on condition; By selecting the value of capacitor C 5, resistance R 51 can select the angle of flow of the second single-phase silicon-controlled SCR5, it is the pulse duration of phototriode output; When two turn-on conditions of triode T51 possess, triode T51 could discharge to storage battery in conducting.
Described stabilized voltage power supply comprises transformer B1, diode D11-D12, integrated stable voltage circuit IC1, electrochemical capacitor C11-C12; Its annexation is, transformer B1 primary coil connects civil power, the two ends of the secondary coil of transformer B1 connect respectively the pin 1 of integrated stable voltage circuit IC1 by diode D11 and diode D12, the centre cap ground connection of transformer B1, the pin 1 of integrated stable voltage circuit IC1 and pin 3 are respectively by electrochemical capacitor C11 and electrochemical capacitor C12 ground connection, pin 2 ground connection of integrated stable voltage circuit IC1, the anodal Vdd that the pin 3 of integrated stable voltage circuit IC1 is stabilized voltage power supply, the model of integrated stable voltage circuit IC1 is 7809.Adopt stabilized voltage power supply can guarantee the accuracy of detection of time-base integrated circuit to accumulator voltage to time-base integrated circuit power supply, thereby can to storage battery, carry out discharge operation and shutdown operation in time, fully charged simultaneously the avoiding of storage battery overcharged.
The signal filtering unit of the terminal voltage of described storage battery is comprised of resistance R 6 and electrochemical capacitor C6, accumulator voltage is carried out to filtering, one termination battery positive voltage of resistance R 6, its other end is by electrochemical capacitor C6 ground connection, the output of the just very signal filtering unit of electrochemical capacitor C6.
For the running status of prompting charger, between the pin 3 of time-base integrated circuit IC3 and positive pole of stabilized voltage supply, be serially connected with resistance R 34, LED 1, between the pin 3 of time-base integrated circuit IC3 and ground, be serially connected with resistance R 35, LED 2; When the pin 3 of time-base integrated circuit IC3 is high level, LED 2 is bright, is illustrated in charging; When the pin 3 of time-base integrated circuit IC3 is low level, LED 1 is bright, is illustrated in charging and finishes.
The operation principle of this electric car charger is, when civil power is positive half cycle, circuits for triggering are carried trigger impulse to the first single-phase silicon-controlled control utmost point, the resistance that changes resistance R 23 in circuits for triggering can change the first single-phase silicon-controlled angle of flow, makes charhing unit export suitable voltage storage battery is carried out to first stage charging;
When rising to 1.2 times (being the set point of discharge voltage) of its nominal voltage, the terminal voltage of storage battery carries out second stage charging; In this stage, when civil power is negative half period, have discharge pulse to add storage battery is carried out to of short duration electric discharge, its effect is the ability to accept with increase pole plate to the pole plate depolarising of storage battery, reduces charging temperature, improve the charging capacity of storage battery, and the useful life that extends storage battery.Schmidt trigger in discharge cell is differentiated the terminal voltage of storage battery, the pin 7 of time-base integrated circuit IC4 when the terminal voltage of storage battery is more than or equal to the set point of discharge voltage in Schmidt trigger becomes conducting state over the ground from cut-off state over the ground, makes power amplifier in discharge cell to battery discharging; The resistance that changes the resistance R 57 in power amplifier can change the size of discharging current; The width of discharge pulse can be determined by resistance R 51 resistances of adjusting in discharge pulse formation circuit;
When the terminal voltage of storage battery rises to 1.38 times (set point of the end voltage of charging) of its nominal voltage, charhing unit and discharge cell quit work; The Schmidt trigger of shutting down in control unit is differentiated the terminal voltage of storage battery, when the terminal voltage of storage battery is more than or equal to the set point of charging end voltage: 1, the pin 7 of time-base integrated circuit IC3 becomes conducting state over the ground from cut-off state over the ground, making the voltage in the capacitor C 21 in circuits for triggering is zero, circuits for triggering triggerless pulse output, first is single-phase silicon-controlled in cut-off state; 2, the pin 3 of time-base integrated circuit IC3 becomes low level from high level, make the working power input of the pin 8(time-base integrated circuit of time-base integrated circuit IC4 in discharge cell) no-voltage supply, the pin 7 of time-base integrated circuit IC4 is cut-off state over the ground, discharge cell discharge off pulse output.
Claims (3)
1. an electric car charger, comprise charhing unit to charge in batteries, to the discharge cell of battery discharging, to the terminal voltage signal of storage battery carry out the signal filtering unit of filtering, according to signal controlling charhing unit and the out-of-work shutdown control unit of discharge cell of the output of signal filtering unit, and provide the stabilized voltage power supply of working power for electric car charger;
It is characterized in that, described charhing unit is a single-phase half-wave SCR rectification circuit, it comprises the first single-phase silicon-controlled SCR2 and circuits for triggering, the first single-phase silicon-controlled anode connects the live wire of civil power, the first single-phase silicon-controlled negative electrode connects the positive pole of storage battery E, and the negative pole of storage battery connects the zero line of civil power; Circuits for triggering are carried start pulse signal at the just half circumferential first single-phase silicon-controlled control utmost point of civil power, make the suitable charging voltage of the first single-phase silicon-controlled output; Described discharge cell at the negative half period of civil power to battery discharging;
Described circuits for triggering are single-node transistor self-oscillating circuit, and it comprises unijunction transistor T2, pulse transformer B2; The synchronizing signal that the emitter of unijunction transistor passes through respectively capacitor C 21 ground connection and accepts from civil power by resistance R 23, the second base stage of unijunction transistor meets the anodal Vdd of stabilized voltage power supply by resistance R 22, the first base stage of unijunction transistor connects primary coil one end of pulse transformer, the primary coil other end ground connection of pulse transformer, the secondary coil two ends of pulse transformer are connected with negative electrode with the control utmost point of the first single-phase silicon-controlled SCR2 respectively;
The time-base integrated circuit IC3 that described shutdown control unit is NE555 by model, resistance R 31-R33, capacitor C 3 form, the pin 6 of time-base integrated circuit IC3 connects the anodal of capacitor C 6 by resistance R 31 respectively and by resistance R 32, connects the pin 2 of time-base integrated circuit IC3, and the pin 2 of time-base integrated circuit IC3 is by resistance R 33 ground connection; The pin 7 of time-base integrated circuit IC3, for charging stop signal output, is connected with the emitter of unijunction transistor, and the pin 3 of time-base integrated circuit IC3 is discharge stop signal output; The pin 8,4 of time-base integrated circuit IC3 meets the anodal Vdd of stabilized voltage power supply, and the pin 5 of time-base integrated circuit IC3 is by capacitor C 3 ground connection;
Described discharge cell comprises that Schmidt trigger, discharge pulse form circuit and power amplifier;
In described Schmidt trigger, the annexation of each element is, the pin 6 of time-base integrated circuit IC4 connects the anodal of capacitor C 6 by resistance R 41 respectively and by resistance R 42, connects the pin 2 of time-base integrated circuit IC4, and the pin 2 of time-base integrated circuit IC4 is by resistance R 53 ground connection; The pin 7 of time-base integrated circuit IC4 is discharge control signal output; The pin 8,4 of time-base integrated circuit IC4 connects the pin 3 of time-base integrated circuit IC3, and the pin 5 of time-base integrated circuit IC4 is by capacitor C 4 ground connection;
The annexation that described discharge pulse forms each element in circuit is, the anode of the second single-phase silicon-controlled SCR5 is by light-emitting diode, the resistance R 52 connecting to neutral lines of optocoupler GR1, the anode of the second single-phase silicon-controlled SCR5 line of starting to exchange fire, the anode of the second single-phase silicon-controlled SCR5 is successively by capacitor C 5, resistance R 51, diode D51 connecting to neutral line, and the control utmost point of the second single-phase silicon-controlled SCR5 connects the node between capacitor C 5 and resistance R 51 by diac D52; The phototriode output discharge pulse signal of optocoupler GR1;
In described power amplifier, the annexation of each element is, the base stage of triode T51 is by the phototriode of optocoupler GR1, the pin 7 that resistance R 53 meets time-base integrated circuit IC4, the base stage of triode T51 connects the positive pole of storage battery by resistance R 54, the emitter of triode T51 connects the positive pole of storage battery, the collector electrode of triode T51 is respectively by resistance R 55 ground connection with connect the base stage of triode T52 by resistance R 56, and the collector electrode of triode T52 connects the positive pole of storage battery by resistance R 57.
2. electric car charger according to claim 1, it is characterized in that, described signal filtering unit is comprised of resistance R 6 and electrochemical capacitor C6, a termination battery positive voltage of resistance R 6, its other end is by electrochemical capacitor C6 ground connection, the output of the just very signal filtering unit of electrochemical capacitor C6.
3. electric car charger according to claim 1, it is characterized in that, between the pin 3 of time-base integrated circuit IC3 and positive pole of stabilized voltage supply, be serially connected with resistance R 34, LED 1, between the pin 3 of time-base integrated circuit IC3 and ground, be serially connected with resistance R 35, LED 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420470881.9U CN203984068U (en) | 2014-08-20 | 2014-08-20 | A kind of electric car charger |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420470881.9U CN203984068U (en) | 2014-08-20 | 2014-08-20 | A kind of electric car charger |
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| CN203984068U true CN203984068U (en) | 2014-12-03 |
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| CN201420470881.9U Withdrawn - After Issue CN203984068U (en) | 2014-08-20 | 2014-08-20 | A kind of electric car charger |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104124744A (en) * | 2014-08-20 | 2014-10-29 | 高玉琴 | Electric bicycle charger |
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2014
- 2014-08-20 CN CN201420470881.9U patent/CN203984068U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104124744A (en) * | 2014-08-20 | 2014-10-29 | 高玉琴 | Electric bicycle charger |
| CN104124744B (en) * | 2014-08-20 | 2016-03-09 | 高玉琴 | A kind of electric car charger |
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| C14 | Grant of patent or utility model | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20141203 Effective date of abandoning: 20160309 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |