CN209001616U - Earth leakage protective electric car charger based on solid-state relay - Google Patents
Earth leakage protective electric car charger based on solid-state relay Download PDFInfo
- Publication number
- CN209001616U CN209001616U CN201821679312.XU CN201821679312U CN209001616U CN 209001616 U CN209001616 U CN 209001616U CN 201821679312 U CN201821679312 U CN 201821679312U CN 209001616 U CN209001616 U CN 209001616U
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- China
- Prior art keywords
- circuit
- chip microcontroller
- state relay
- solid
- charging
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- 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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
-
- 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
- Y02T90/14—Plug-in electric vehicles
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses the earth leakage protective electric car chargers based on solid-state relay, circuit is protected including leakage switch, power circuit, single-chip microcontroller, low current charge circuit, high-current charging circuit, bridge rectifier, and first be shorted resistance and second be shorted resistance, the power circuit is connect to provide operating voltage with single-chip microcontroller, single-chip microcontroller respectively with low current charge circuit, the control terminal of high-current charging circuit is connected to control its charging work or disconnection, the low current charge circuit, high-current charging circuit all uses solid-state relay as switching device, first is shorted resistance, determine charging voltage specification to single-chip microcontroller whether second short circuit resistance connects with the input port of single-chip microcontroller and combines short circuit by the two.The switching device of charging circuit uses solid-state relay, has many advantages, such as contactless spark, noiseless, the service life is long.
Description
Technical field
The utility model relates to electric car chargers, are based particularly on the earth leakage protective electric vehicle charging of solid-state relay
Device.
Background technique
The battery of traditional electric car has 36V, 48V, 64V, and 72V etc. different voltage specifications is 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 dedicated, such as 36V 36V special purpose relay
And respective element, 48V 48V special purpose relay and respective element, if to realize different voltage parameters, it is necessary to increase
Or element is reduced or changes, it greatly affected production efficiency and unnecessary waste, reduce loss.Also, electric vehicle charges
Switching device used by the charging circuit of device is mechanical electromagnetic relay, is easy to contact fire between contact and contact when use
Flower, is accompanied by the noise of whip, service life is of short duration.In addition, traditional electric car lacks earth leakage protective, thing of getting an electric shock frequent occurrence
Therefore.
Utility model content
In order to solve the above technical problems, the purpose of the utility model is to provide one kind to be suitable for 36V, 48V, 64V, 72V etc.
Different voltages size battery cell and earth leakage protective electric car charger based on solid-state relay.
The technical solution adopted in the utility model is:
Earth leakage protective electric car charger based on solid-state relay, including leakage switch protect circuit, power circuit, list
Piece machine, low current charge circuit, high-current charging circuit, bridge rectifier and dismountable first are shorted resistance and the
Two are shorted resistance, leakage switch protect circuit setting alternating current output end and low current charge circuit, high-current charging circuit it
Between, the power circuit is connect to provide operating voltage with single-chip microcontroller, and single-chip microcontroller is filled with low current charge circuit, high current respectively
The control terminal of circuit is connected to control its charging work or disconnection, the output of low current charge circuit, high-current charging circuit
End exports electric current to the charging port of battery, the low current charge circuit, big electricity after rectifying by the bridge rectifier
Current charge circuit all uses solid-state relay as switching device, and first is shorted the defeated of resistance, the second short circuit resistance and single-chip microcontroller
Inbound port is detachably connected, as the defeated of charging voltage specification whether the first short circuit resistance, second are shorted the connection of resistance
Enter signal to single-chip microcontroller.
The earth leakage protective electric car charger based on solid-state relay further includes overcharge protection circuit, this overcharges protection
Circuit is serially connected between bridge rectifier and the charging port of battery, and overcharge protection circuit is using solid-state relay as switch
Device and its control terminal is connect with the single-chip microcontroller
The earth leakage protective electric car charger based on solid-state relay further includes battery voltage detection circuit, the battery
Voltage detecting circuit is connect to ensure that single-chip microcontroller works normally again after charging port access battery with the single-chip microcontroller.
The earth leakage protective electric car charger based on solid-state relay further includes the temperature protection connecting with single-chip microcontroller
Control circuit, the temperature protection control circuit stop working for detecting the control single chip computer when temperature is spent higher than+80.
The earth leakage protective electric car charger based on solid-state relay further includes the LED indication electricity connecting with single-chip microcontroller
Road, the LED indicating circuit are used to indicate the working condition of charger.
The leakage switch protection circuit includes zero sequence current mutual inductor, controller, silicon-controlled, magnetictrip, this zero
Sequence current transformer is arranged in outside alternating current inlet wire and the contact of the magnetictrip is serially connected in alternating current inlet wire, zero sequence current mutual inductance
Device is connect to feed back electric leakage signal with the controller, and controller leads through and off by the coil of SCR control magnetictrip
It opens.
The utility model has the beneficial effects that the utility model charger can pass through resistance on same circuit board
R43, R42 short circuit over the ground disconnect, and realize the input signal of different combinations to single-chip microcontroller, combining form is respectively (R42
Connection, R43 connection), (R42 connection, R43 disconnect), (R42 disconnect, R43 connection), (R42 disconnection, R43 disconnection), four kinds are combined
The input signal of four kinds of specification charging voltages such as 36V, 48V, 64V, 72V is respectively represented, then when single-chip microcontroller receives input letter
Number and identify that user wants that specification charging voltage, that is, may be selected the corresponding charge mode prestored implement charging to battery
Group, and then realize different voltage parameter, without increasing or decreasing or changing element, thus greatly facilitate production efficiency and
Unnecessary waste reduces loss, and the switching device of charging circuit uses solid-state relay, with contactless spark, noiseless,
The advantages that service life is long.Leakage switch protection circuit can reduce the danger to get an electric shock, and leakage protection circuit is for the first time answered by the country
With on charging circuit for electric vehicles.
Detailed description of the invention
Specific embodiment of the present utility model is described further with reference to the accompanying drawing.
Fig. 1 is the live part circuit diagram of the utility model charger；
Fig. 2 is control and the detection part circuit diagram of the utility model charger；
Fig. 3 is the specification figure that the utility model resistance combination is shorted；
Fig. 4 is the power circuit diagram of the utility model charger；
Fig. 5 is the leakage switch protection circuit diagram of the utility model charger.
Specific embodiment
It as Figure 1-Figure 4, is the earth leakage protective electric car charger based on solid-state relay of the utility model, including
Leakage switch protect circuit, power circuit (see Fig. 4), single-chip microcontroller U1, low current charge circuit 10, high-current charging circuit 20,
Bridge rectifier 30 and the first short circuit resistance R42 and second are shorted resistance R43, and leakage switch protects circuit to be arranged in city
Between electricity output end and low current charge circuit 10, high-current charging circuit 20.Above-mentioned Multifunctional electric vehicle charger of filling is not seal
The charger circuit board of dress, towards charger manufacturer rather than ordinary consumer, the first short circuit resistance R42 and second are shorted electricity
Resistance R43 can be disconnected or be connected to manually by technical staff in charger circuit board.
Such as Fig. 5, it includes zero sequence current mutual inductor L1, controller U4, silicon-controlled T3, electromagnetic trip that leakage switch, which protects circuit,
Device, zero sequence current mutual inductor L1 is arranged in outside alternating current inlet wire and the contact of the magnetictrip (K1-SW1, K1-SW2) goes here and there
Connect on alternating current inlet wire, zero sequence current mutual inductor L1 is connect to feed back electric leakage signal with the controller U4, controller U4 according to
Whether there is electric leakage signal and the coil K1-L conducting of magnetictrip is controlled by silicon-controlled T3 and is disconnected, leakage switch protection electricity
Road can reduce the danger to get an electric shock, and the country for the first time applies leakage protection circuit on charging circuit for electric vehicles.
Above-mentioned power circuit is connect to provide operating voltage with single-chip microcontroller U1, single-chip microcontroller U1 respectively with low current charge circuit
10, 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 end of charging circuit 20 by the bridge rectifier 30 rectify after export electric current 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
For low current charge circuit 10, solid-state relay is mainly made of triode Q1, optocoupler U4, silicon-controlled T2, and single-chip microcontroller U1 is logical
The port J1 triggering Q1 conducting is crossed, and then optocoupler U4 must be conducted, trigger silicon-controlled T2 conducting, completes solid-state relay conducting, it is real
Apply charging；First short circuit resistance R42, the second short circuit resistance R43 connect and pass through with the input port (9 feet, 8 feet) of single-chip microcontroller U1
Determine that charging voltage specification gives single-chip microcontroller U1 whether the two combination is shorted, specification figure is as shown in Figure 3.
As the further perfect of the technical program, the earth leakage protective electric car charger based on solid-state relay further includes
Overcharge protection circuit 40, the overcharge protection circuit 40 are serially connected between bridge rectifier 30 and the charging port of battery, overcharge
Protection circuit 40 uses solid-state relay K3 with triode Q4 as switching device and its control terminal is connect with the single-chip microcontroller U1,
If when cannot be turned off due to K2, K1 circuit on time or out of control, voltage can be more than single-chip microcontroller after upper limit voltage 15.5V five seconds
K3 can be turned off by force, so that playing battery is not filled bad effect.
As the further improvement of the technical program, the earth leakage protective electric car charger based on solid-state relay further includes
Battery voltage detection circuit 50, V-BATTERY battery voltage detection circuit: being made of D10, R38, D14, R39, C35, the battery
Voltage detecting circuit 50 is connect to ensure that single-chip microcontroller U1 is worked normally again after charging port access battery with the single-chip microcontroller U1.This
Outside, it is additionally provided with vdd voltage detection circuit: being made of R7, D13, R6, C4.
As the further improvement of the technical program, the earth leakage protective electric car charger based on solid-state relay further includes
The temperature protection control circuit connecting with single-chip microcontroller U1, is made of R7/R4, R5, C5, and when temperature, which is higher than+80, to be spent, single-chip microcontroller stops
It only works, at this time green LED, red LED flashes alarm simultaneously.
As the further improvement of the technical program, the earth leakage protective electric car charger based on solid-state relay further includes
The LED indicating circuit connecting with single-chip microcontroller U1, by green LED, red LED composition, which is used to indicate charger
Working condition.
This charger is that one kind to switch working principle reaches charging purpose, that is to say, that single group battery is in low-voltage
Circuit is connected when 13.5V, is disconnected in high voltage 15.5V, is judged whether battery fills by the charging time of several sections of open and close
It is full.
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
Join, 48V is by four, and 60V is by five, and for 72V by 6 battery compositions, the lower voltage limit of single group battery is set as small by we
It is connected when 13.5V, disconnection when upper limit voltage is set greater than 15.5V, if constantly open voltage will continue to rise damage battery.
The charging principle and process of the technical program are as follows: if first connect 220V power supply, charger be it is idle, at this time
Red LED flashing alarm, VO+, VO- do not have voltage output, K1, K2, and K3 is in an off state, and are primarily due to security consideration, because
It is charger voltage considerably beyond human body 36V safe voltage.VO must first connect battery, then connect 220V power supply, and charger is
It can work normally, at this time U1,10 feet obtain a positive high-voltage level, and U1 starts to work, and 5 feet export high level, and Q4, K3 are led
Lead to, 6,7 feet, 3 seconds output high level of delay, Q1, K1, Q2, K2 conducting, electric current passes through C14, R16, R17, C11, R13, R12 charge and discharge
Electricity is changed into DC voltage after the bridge rectifier of D3, D4, D5, D6 composition and charges the battery, i.e. starting large current charge.Its
In, work as VO+, VO- output access battery pack positive and negative anodes, voltage will lower, and (battery pack is equivalent to the work of voltage-stablizer or load
With), as charging progresses, battery voltage is gradually increasing, and capacitance-resistance voltage reduction circuit only serves the effect of current limliting.
It is large current charge first by taking single group battery as an example, when single group cell voltage reaches 15.5V, the delay of 6,7 feet is defeated
Low level out, Q1, K1, Q2, K2 are disconnected, and complete to charge for the first time, although single group cell voltage reaches 15.5V at this time, due to
It is large current charge, there is the effect of " inertia ", leads to actual voltage virtual height and underfill, virtual voltage only reaches after tested
To the 60% of voltage rating, therefore, Q1, K1, voltage can decline after Q2, K2 are disconnected；
When voltage drops to 13.5V, 7 feet export again, and Q1, K1 conducting, this electric current only pass through C11, and R13, R12 carry out small
Electric current charging, i.e. floating charging, also referred to as trickle charge；Capacity is bigger, and the required charging time is longer, otherwise shorter, so anti-
Low current switch charging is carried out again, and when being less than or equal to 180 seconds in the charging time from 13.5V to 15.5V, green LED is red
LED is lighted simultaneously, indicate at this time battery have been filled with 70% electricity, when charging between be less than or equal to 60 seconds when, indicate at this time
Battery has been filled with 90% electricity, when charging between be less than or equal to 20 seconds when, indicate at this time battery have been filled with 100% electricity
Amount, green LED are gone out, and K3, K1 are disconnected, charging complete.
The utility model charger by resistance R43, R42 short circuit over the ground, can disconnect on same circuit board,
Realize the input signal of different combinations to single-chip microcontroller, combining form be respectively (R42 connection, R43 connection), (R42 connection,
R43 is disconnected), (R42 disconnect, R43 connection), (R42 disconnect, R43 disconnection), four kinds of combinations respectively represent 36V, 48V, 64V, 72V
Deng the input signal of four kinds of specification charging voltages, then when single-chip microcontroller receives the input signal and identifies that user wants that rule
Lattice charging voltage may be selected the corresponding charge mode prestored and implement charging to battery pack.
The foregoing is merely the preferred embodiments of the utility model, the utility model is not limited to above-mentioned embodiment party
Formula, if with essentially identical means realize the utility model aim technical solution belong to the protection scope of the utility model it
It is interior.
Claims (6)
1. the earth leakage protective electric car charger based on solid-state relay, it is characterised in that: protect circuit, electricity including leakage switch
Source circuit, single-chip microcontroller, low current charge circuit, high-current charging circuit, bridge rectifier and dismountable first are shorted
Resistance and second is shorted resistance, and leakage switch protection circuit setting is filled in alternating current output end and low current charge circuit, high current
Between circuit, the power circuit is connect to provide operating voltage with single-chip microcontroller, single-chip microcontroller respectively with low current charge circuit,
The control terminal connection of high-current charging circuit is to control its charging work or disconnection, low current charge circuit, large current charge electricity
The output end on road exports electric current to the charging port of battery, the low current charge electricity after rectifying by the bridge rectifier
Road, high-current charging circuit all use solid-state relay as switching device, and first is shorted resistance, the second short circuit resistance and monolithic
The input port of machine is detachably connected, and the first short circuit resistance, second are used as charging voltage to advise whether being shorted the connection of resistance
The input signal of lattice is to single-chip microcontroller.
2. the earth leakage protective electric car charger according to claim 1 based on solid-state relay, it is characterised in that: also wrap
Overcharge protection circuit is included, which is serially connected between bridge rectifier and the charging port of battery, overcharges protection
Circuit is using solid-state relay is as switching device and its control terminal is connect with the single-chip microcontroller.
3. the earth leakage protective electric car charger according to claim 1 or 2 based on solid-state relay, it is characterised in that:
It further include battery voltage detection circuit, which connect to ensure charging port access electricity with the single-chip microcontroller
Single-chip microcontroller works normally again behind pond.
4. the earth leakage protective electric car charger according to claim 1 or 2 based on solid-state relay, it is characterised in that:
It further include the temperature protection control circuit being connect with single-chip microcontroller, the temperature protection control circuit is for detecting when temperature is higher than+80
Control single chip computer stops working when spending.
5. the earth leakage protective electric car charger according to claim 1 or 2 based on solid-state relay, it is characterised in that:
It further include the LED indicating circuit being connect with single-chip microcontroller, which is used to indicate the working condition of charger.
6. the earth leakage protective electric car charger according to claim 1 based on solid-state relay, it is characterised in that: described
It includes zero sequence current mutual inductor, controller, silicon-controlled, magnetictrip, the zero sequence current mutual inductor that leakage switch, which protects circuit,
It is arranged in outside alternating current inlet wire and the contact of the magnetictrip is serially connected in alternating current inlet wire, zero sequence current mutual inductor and the control
Device connection is to feed back electric leakage signal, the coil conducting and disconnection that controller passes through SCR control magnetictrip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821679312.XU CN209001616U (en) | 2018-10-16 | 2018-10-16 | Earth leakage protective electric car charger based on solid-state relay |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821679312.XU CN209001616U (en) | 2018-10-16 | 2018-10-16 | Earth leakage protective electric car charger based on solid-state relay |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209001616U true CN209001616U (en) | 2019-06-18 |
Family
ID=66803863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821679312.XU Expired - Fee Related CN209001616U (en) | 2018-10-16 | 2018-10-16 | Earth leakage protective electric car charger based on solid-state relay |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209001616U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111585456A (en) * | 2020-03-31 | 2020-08-25 | 宁波三星医疗电气股份有限公司 | Method for realizing universality of high-low voltage specifications of PCB of power terminal |
-
2018
- 2018-10-16 CN CN201821679312.XU patent/CN209001616U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111585456A (en) * | 2020-03-31 | 2020-08-25 | 宁波三星医疗电气股份有限公司 | Method for realizing universality of high-low voltage specifications of PCB of power terminal |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190618 Termination date: 20211016 |
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| CF01 | Termination of patent right due to non-payment of annual fee |