CN108039764A - Programmable switch formula electric car charger based on solid-state relay - Google Patents
Programmable switch formula electric car charger based on solid-state relay Download PDFInfo
- Publication number
- CN108039764A CN108039764A CN201710669338.XA CN201710669338A CN108039764A CN 108039764 A CN108039764 A CN 108039764A CN 201710669338 A CN201710669338 A CN 201710669338A CN 108039764 A CN108039764 A CN 108039764A
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- circuit
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- solid
- state relay
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- 238000001514 detection method Methods 0.000 claims description 8
- 230000005611 electricity Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/04—Regulation of charging current or voltage
- H02J7/06—Regulation of charging current or voltage using discharge tubes or semiconductor devices
-
- 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
- H02J7/0071—Regulation of charging or discharging current or voltage with a programmable schedule
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- H02J7/027—
-
- H02J7/045—
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses the programmable switch formula electric car charger based on solid-state relay,Including power circuit,Microcontroller,Low current charge circuit,High-current charging circuit,Bridge rectifier,And touch-switch,External memory chip and four voltage class indicator lights,The power circuit is connected with microcontroller to provide operating voltage,Microcontroller respectively with low current charge circuit,The control terminal of high-current charging circuit is connected to control its charging work or disconnection,Low current charge circuit,The output terminal of high-current charging circuit passes through charging port of the output current to battery after the bridge rectifier rectification,Touch-switch is used to switch four voltage class indicator light flickers to select the charging voltage of specific grade,The charging voltage of selected specific grade is stored in external memory chip and available for the charging voltage given tacit consent to when starting shooting next time.The advantages that switching device of charging circuit uses solid-state relay, has a contactless spark, noiseless, long lifespan.
Description
Technical field
The present invention relates to electric car charger, is based particularly on the programmable switch formula electric car charging of solid-state relay
Device.
Background technology
The battery of traditional electric car has the different voltage specifications such as 36V, 48V, 64V, 72V, corresponding just to have different rule
The electric car charger of lattice, and the circuit board of electric car charger can only specially plate it is special, such as 36V 36V special purpose relays
And respective element, 48V 48V special purpose relays and respective element, if to realize different voltage parameters, it is necessary to increase
Add deduct less or change element, greatly affected production efficiency and unnecessary waste, reduce loss.And need quick
Realize that charging voltage is adjusted, avoid artificial wiring from bringing cumbersome.In addition, opened used by the charging circuit of electric car charger
It is mechanical electromagnetic relay to close device, easy contact sparking between contact and contact during use, is accompanied by the noise of whip,
Service life is of short duration.
The content of the invention
In order to solve the above technical problems, the object of the present invention is to provide one kind to be suitable for the differences such as 36V, 48V, 64V, 72V
The programmable switch formula electric car charger based on solid-state relay of voltage specification battery.
The technical solution adopted by the present invention is：
Programmable switch formula electric car charger based on solid-state relay, including power circuit, microcontroller, low current fill
Circuit, high-current charging circuit, bridge rectifier and touch-switch, external memory chip and four voltage class refer to
Show lamp, the power circuit is connected with microcontroller to provide operating voltage, microcontroller respectively with low current charge circuit, high current
The control terminal of charging circuit is connected to control its charging work or disconnection, low current charge circuit, high-current charging circuit it is defeated
Outlet is the low current charge circuit, big by charging port of the output current to battery after the bridge rectifier rectification
Current charging circuit is all using solid-state relay as switching device, the touch-switch, external memory chip and four voltages
Grade indicator light is all connected with microcontroller, and it is specific etc. to select which is used for four voltage class indicator lights flickers of switching
The charging voltage of level, the charging voltage of the selected specific grade are stored in external memory chip and can be used for starting shooting next time
When the charging voltage given tacit consent to.
The programmable switch formula electric car charger based on solid-state relay further includes overcharge protection circuit, this is overcharged
Protection circuit is serially connected between bridge rectifier and the charging port of battery, and overcharge protection circuit uses solid-state relay conduct
Switching device and its control terminal is connected with the microcontroller
The programmable switch formula electric car charger based on solid-state relay further includes battery voltage detection circuit, should
Battery voltage detection circuit is connected with the microcontroller to ensure that microcontroller works normally again after charging port access battery.
The programmable switch formula electric car charger based on solid-state relay further includes the temperature being connected with microcontroller
Control circuit is protected, which is used to detect the control single chip computer when temperature is spent higher than+80 and is stopped.
The programmable switch formula electric car charger based on solid-state relay further includes the LED being connected with microcontroller and refers to
Show circuit, which is used for the working status for indicating charger.
The programmable switch formula electric car charger based on solid-state relay further includes the electricity being connected with microcontroller
Indicating circuit, the battery capacity indication circuit are made of four LED.
Beneficial effects of the present invention：Charger of the present invention can be carried out using same charger by S1 touch-switch
Different charger voltages is programmed to, the use of user is greatly facilitated, can so greatly reduce the waste of the energy, is risen
Good energy-saving and emission-reduction effect is arrived.For example family has the electric bicycle of three different voltages, it is only necessary to a programmable electricity
Vehicle charger can be achieved.The switching device of charging circuit uses solid-state relay, has contactless spark, noiseless, longevity
Order the advantages that long.
Brief description of the drawings
The embodiment of the present invention is described further below in conjunction with the accompanying drawings.
Fig. 1 is the live part circuit diagram of charger of the present invention.
Fig. 2 is control and the detection part circuit diagram of charger of the present invention.
Fig. 3 is the power circuit diagram of charger of the present invention.
Embodiment
As shown in Figure 1-Figure 3, it is the programmable switch formula electric car charger based on solid-state relay of the present invention, including
Power circuit, microcontroller U1, low current charge circuit 10, high-current charging circuit 20, bridge rectifier 30 and touch out
Close S1, external memory chip U4 and four voltage class indicator lights (LED2, LED3, LED4, LED5).
Above-mentioned power circuit is connected with microcontroller U1 to provide operating voltage, microcontroller U1 respectively with low current charge circuit
10th, the control terminal of high-current charging circuit 20 is connected to control its charging work or disconnection, low current charge circuit 10, high current
The output terminal of charging circuit 20 by output current after 30 rectification of bridge rectifier to battery charging port (VO+,
VO-)；
Above-mentioned low current charge circuit 10, high-current charging circuit 20 all using solid-state relay as switching device, with
Exemplified by low current charge circuit 10, solid-state relay is mainly made of triode Q1, optocoupler U4, silicon-controlled T2, and microcontroller U1 leads to
J1 ports triggering Q1 conductings are crossed, and then optocoupler U4 must be conducted, and trigger silicon-controlled T2 conductings, complete solid-state relay conducting, it is real
Apply charging；The touch-switch S1, external memory chip U4 and four voltage class indicator lights are all connected with microcontroller U1, this is light
Touch switch S1 and be used to switching the flicker of four voltage class indicator lights to select the charging voltage of specific grade, it is described selected specific etc.
The charging voltage of level is stored in external memory chip U2 and available for the charging voltage given tacit consent to when starting shooting next time.
Concrete operating principle is as follows：Long-press S1 five seconds, LED2, LED3, LED4, LED5 flicker at the same time, then press once,
LED2 individually flickers, and is locked automatically after not operating 5 seconds, and LED2 is changed into being always on, and represents the voltage of charger at this time as 36V.According to
This saying and so on, 48V, the voltage of 64V, 72V can be selected.(pay attention to：Voltage voltage after chosen, it is next after power-off
Secondary start is still selected voltage)
As the further perfect of the technical program, the programmable switch formula electric car charger based on solid-state relay is also
Including overcharge protection circuit 40, which is serially connected between bridge rectifier 30 and the charging port of battery,
Overcharge protection circuit 40 is using mechanical relay K3 and triode Q4 as switching device and its control terminal and the microcontroller U1
Connection, if since the solid-state relay of K2, low current charge circuit 10 cannot turn off on time when or when out of control, voltage can exceed
After upper voltage limit 15.5V five seconds, microcontroller can turn off K3 by force, so that playing battery is not filled bad effect.
Further as the technical program is improved, and the programmable switch formula electric car charger based on solid-state relay is also
Including battery voltage detection circuit 50, V-BATTERY battery voltage detection circuits：It is made of D10, R38, D14, R39, C35, should
Battery voltage detection circuit 50 is connected with the microcontroller U1 to ensure microcontroller U1 normal works again after charging port access battery
Make.In addition, it is additionally provided with vdd voltage detection circuit：It is made of R7, D13, R6, C4.
Further as the technical program is improved, and the programmable switch formula electric car charger based on solid-state relay is also
Including the temperature protection control circuit being connected with microcontroller U1, it is made of R7/R4, R5, C5, it is single when temperature is spent higher than+80
Piece machine is stopped, at this time green LED, and red LED flickers alarm at the same time.
Further as the technical program is improved, and the programmable switch formula electric car charger based on solid-state relay is also
Including the LED indicating circuit being connected with microcontroller U1, by green LED, red LED composition, which is used to indicate
The working status of charger.
The programmable switch formula electric car charger based on solid-state relay further includes the electricity being connected with microcontroller
Indicating circuit, the battery capacity indication circuit are made of four LED, the corresponding four lattice electricity on interface, and each lattice represent 25% electricity
Amount.
This charger is a kind of to reach charging purpose with switch principle, that is to say, that is connect in low-voltage 13.5V
Circuit passband, disconnects in high voltage 15.5V, judges whether battery is full of by the charging interval of several sections of open and close.
Battery of electric vehicle is currently used 36V, 48V, 64V, and tetra- kinds of voltages of 72V, 36V is by the battery strings of three 12V
Connection forms, and 48V is by four, and 60V is by five, and by 6 battery compositions, we are set as the lower line voltage of single group battery small 72V
Connected when 13.5V, upper voltage limit disconnects when being set greater than 15.5V.
If first connecting 220V power supplys, charger is idle, and the alarm of red LED flicker at this time, VO+, VO- are without electricity
Pressure output, low current charge circuit 10, the solid-state relay of high-current charging circuit 20, K3 are off, are primarily due to
Security consideration, because charger voltage is considerably beyond human body 36V safe voltages.VO must first connect battery, then connect 220V electricity
Source, charger could work normally, at this time U1, and 10 feet obtain a positive high-voltage level, and U1 starts to work, and the output of 5 feet is high
Level, Q4, K3 conducting, 6,7 feet are delayed 3 seconds output high level, and low current charge circuit 10, high-current charging circuit 20 are consolidated
State relay turns on, and electric current is whole by C14, R16, R17, C11, R13, R12 discharge and recharges, the bridge-type formed through D3, D4, D5, D6
It is changed into DC voltage after stream to charge the battery.
When single group cell voltage reaches 15.5V, 6,7 feet delay output low level, low current charge circuit 10, high current
The solid-state relay of charging circuit 20 disconnects；When voltage drops to 13.5V, 7 feet export again, and low current charge circuit 10 is consolidated
State relay turns on, this electric current only passes through C11, and R13, R12 carry out low current charge；Capacity is bigger, and the required charging interval gets over
It is long, on the contrary it is shorter, switched charge is so repeated, is less than or equal to 180 seconds when the charging interval from 13.5V to 15.5V
When, green LED, red LED is lighted at the same time, represent at this time battery have been filled with 70% electricity, when charging between be less than or equal to
At 60 seconds, represent that battery at this time has been filled with 90% electricity, when charging between when being less than or equal to 20 seconds, represent that battery has been at this time
Full of 100% electricity, green LED is gone out, and K3, the solid-state relay of low current charge circuit 10 disconnect, charging complete.
Charger of the present invention can be programmed using same charger by S1 touch-switch to realize different fill
Electrical voltage, greatly facilitates the use of user, can so greatly reduce the waste of the energy, play good energy-saving and emission-reduction
Effect.For example family has the electric bicycle of three different voltages, it is only necessary to which a programmable electric car charger can be achieved.
The advantages that switching device of charging circuit uses solid-state relay, has a contactless spark, noiseless, long lifespan.
The foregoing is merely the present invention preferred embodiments, the present invention is not limited to the above embodiment, if with
Essentially identical means realize that the technical solution of the object of the invention is belonged within protection scope of the present invention.
Claims (6)
1. the programmable switch formula electric car charger based on solid-state relay, it is characterised in that：Including power circuit, monolithic
Machine, low current charge circuit, high-current charging circuit, bridge rectifier and touch-switch, external memory chip and four
Voltage class indicator light, the power circuit are connected with microcontroller to provide operating voltage, microcontroller respectively with low current charge
Circuit, the control terminal of high-current charging circuit are connected to control its charging work or disconnection, and low current charge circuit, high current are filled
The output terminal of circuit is filled by charging port of the output current to battery after the bridge rectifier rectification, the low current
Circuit, high-current charging circuit all using solid-state relay as switching device, the touch-switch, external memory chip and
Four voltage class indicator lights are all connected with microcontroller, which is used to switch four voltage class indicator light flickers to select
The charging voltage of specific grade is determined, under the charging voltage of the selected specific grade is stored in external memory chip and can be used for
The charging voltage given tacit consent to when once starting shooting.
2. the programmable switch formula electric car charger according to claim 1 based on solid-state relay, it is characterised in that：
Overcharge protection circuit is further included, which is serially connected between bridge rectifier and the charging port of battery, overcharges
Protection circuit is connected using solid-state relay as switching device and its control terminal with the microcontroller.
3. the programmable switch formula electric car charger according to claim 1 or 2 based on solid-state relay, its feature exist
In：Battery voltage detection circuit is further included, which is connected with the microcontroller to ensure that charging port connects
Microcontroller works normally again after entering battery.
4. the programmable switch formula electric car charger according to claim 1 or 2 based on solid-state relay, its feature exist
In：Further include the temperature protection control circuit being connected with microcontroller, the temperature protection control circuit be used for detect when temperature higher than+
Control single chip computer is stopped at 80 degree.
5. the programmable switch formula electric car charger according to claim 1 or 2 based on solid-state relay, its feature exist
In：The LED indicating circuit being connected with microcontroller is further included, which is used for the working status for indicating charger.
6. the programmable switch formula electric car charger according to claim 1 or 2 based on solid-state relay, its feature exist
In：The battery capacity indication circuit being connected with microcontroller is further included, which is made of four LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710669338.XA CN108039764B (en) | 2017-08-08 | 2017-08-08 | Programmable switch type electric vehicle charger based on solid-state relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710669338.XA CN108039764B (en) | 2017-08-08 | 2017-08-08 | Programmable switch type electric vehicle charger based on solid-state relay |
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| Publication Number | Publication Date |
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| CN108039764A true CN108039764A (en) | 2018-05-15 |
| CN108039764B CN108039764B (en) | 2021-10-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710669338.XA Active CN108039764B (en) | 2017-08-08 | 2017-08-08 | Programmable switch type electric vehicle charger based on solid-state relay |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5420494A (en) * | 1994-01-31 | 1995-05-30 | Lu; Chao-Cheng | Battery charger device |
| CN203617756U (en) * | 2013-12-16 | 2014-05-28 | 河南速达电动汽车科技有限公司 | High-power rapid intelligent charging system for electric vehicle |
| CN204118775U (en) * | 2014-08-14 | 2015-01-21 | 浙江肯得机电股份有限公司 | A kind of 12V/24V Electronic Control battery charger |
| CN104882921A (en) * | 2015-05-05 | 2015-09-02 | 昆明理工大学 | Design method for work mode and displaying of work mode of charger |
| CN205846769U (en) * | 2016-06-22 | 2016-12-28 | 浙江肯得机电股份有限公司 | The Multifunctional storage-battery charger that a kind of microprocessor controls |
| CN206250807U (en) * | 2016-12-08 | 2017-06-13 | 浙江肯得机电股份有限公司 | A kind of battery charger of microprocessor control |
-
2017
- 2017-08-08 CN CN201710669338.XA patent/CN108039764B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5420494A (en) * | 1994-01-31 | 1995-05-30 | Lu; Chao-Cheng | Battery charger device |
| CN203617756U (en) * | 2013-12-16 | 2014-05-28 | 河南速达电动汽车科技有限公司 | High-power rapid intelligent charging system for electric vehicle |
| CN204118775U (en) * | 2014-08-14 | 2015-01-21 | 浙江肯得机电股份有限公司 | A kind of 12V/24V Electronic Control battery charger |
| CN104882921A (en) * | 2015-05-05 | 2015-09-02 | 昆明理工大学 | Design method for work mode and displaying of work mode of charger |
| CN205846769U (en) * | 2016-06-22 | 2016-12-28 | 浙江肯得机电股份有限公司 | The Multifunctional storage-battery charger that a kind of microprocessor controls |
| CN206250807U (en) * | 2016-12-08 | 2017-06-13 | 浙江肯得机电股份有限公司 | A kind of battery charger of microprocessor control |
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| CN108039764B (en) | 2021-10-29 |
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