CN107351687B - Two-way vehicle-mounted charger and electric automobile - Google Patents
Two-way vehicle-mounted charger and electric automobile Download PDFInfo
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- CN107351687B CN107351687B CN201710512125.6A CN201710512125A CN107351687B CN 107351687 B CN107351687 B CN 107351687B CN 201710512125 A CN201710512125 A CN 201710512125A CN 107351687 B CN107351687 B CN 107351687B
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- 238000001514 detection method Methods 0.000 claims abstract description 25
- 238000005070 sampling Methods 0.000 claims abstract description 23
- 239000004065 semiconductor Substances 0.000 claims description 59
- 238000012360 testing method Methods 0.000 claims description 29
- 239000003990 capacitor Substances 0.000 claims description 21
- 239000003381 stabilizer Substances 0.000 claims description 7
- 230000005611 electricity Effects 0.000 claims description 6
- 230000002457 bidirectional effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 6
- 238000012545 processing Methods 0.000 description 4
- 230000001681 protective effect Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000011897 real-time detection Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
Classifications
-
- 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
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/003—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to inverters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/26—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents
- H02H3/32—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to difference between voltages or between currents; responsive to phase angle between voltages or between currents involving comparison of the voltage or current values at corresponding points in different conductors of a single system, e.g. of currents in go and return conductors
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- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention provides a bidirectional vehicle-mounted charger and an electric automobile, which are used for connecting a connecting end and a connecting circuit of a load; the leakage current sensor is connected to the connecting circuit; the sampling unit is electrically connected with the output end of the leakage current sensor and is used for collecting the output voltage of the output end of the leakage current sensor; the first control unit is electrically connected with the sampling unit and used for performing shutdown control on the whole machine when the leakage current sensor is in a leakage detection mode and the output voltage of the output end of the leakage current sensor acquired by the sampling unit is greater than a set threshold value, so that leakage protection is realized and electric shock is prevented.
Description
Technical field
The present invention relates to automobile circuit field more particularly to a kind of two-way Vehicular chargers and electric car.
Background technique
With the development of the social economy, automobile is more more and more universal, huge numbers of families have been going into, have become essential
The daily trip vehicles.And with the research and development of energy-efficient, environment-friendly automobiles and popularize, it is raw that electric car is increasingly becoming new automobile
Produce and buy trend.
In at this stage, the Vehicular charger that market electric car generally carries all be it is unidirectional, only do charging use, cannot
It realizes inversion, but has more and more vehicles at present and backward and carry bidirectional charger, realize that the charging of pure electric automobile makes
With, and externally inversion exports ac high-voltage, High voltage output use provides the user with convenience, but there is also certain application risk,
Two-way Vehicular charger external inversion export high pressure when, if generate leakage current without detected and taken precautions against in time,
It is possible that the accidents such as artificial electric shock, fire can be brought, security risk is brought to two-way Vehicular charger inversion output.
Summary of the invention
A kind of two-way Vehicular charger and electric car are provided in the embodiment of the present invention, existed with solving two-way Vehicular charger
When external inversion output high pressure, if generating leakage current without detected and taken precautions against in time, it is possible to can bring artificial
The accidents such as electric shock, fire export the problem of bringing security risk to two-way Vehicular charger inversion.
In order to solve the above-mentioned technical problem, the embodiment of the present invention adopts the following technical scheme that
In a first aspect, the embodiment of the present invention provides a kind of two-way Vehicular charger, comprising:
For accessing connecting pin and the connection circuit of load；
Leakage current sensor is arranged on the connection circuit；
Sampling unit is electrically connected with the output end of the leakage current sensor, for acquiring the leakage current sensor
The output voltage of output end；
First control unit is electrically connected with the sampling unit, for being in detection of electrical leakage when the leakage current sensor
Mode is right when the output voltage of the output end of the sampling unit leakage current sensor collected is greater than given threshold
Complete machine carries out shutdown control.
Optionally, the two-way Vehicular charger further include:
Signal input unit is controlled, is electrically connected with the test side of the leakage current sensor, for being spread to the electric leakage
The test side input first voltage signal or second voltage signal of sensor, wherein the leakage current sensor receives first electricity
Auto-Sensing Mode is opened when pressing signal, opens detection of electrical leakage mode when receiving the second voltage signal；
Second control unit keeps the control signal defeated for exporting control signal to the control signal input unit
Enter unit and inputs first voltage signal or second voltage signal to the test side of the leakage current sensor.
Optionally, second control unit is specifically used for:
First control signal is exported to the control signal input unit, makes the control signal input unit to the leakage
The test side of current sensor inputs first voltage signal, and obtains the sampling unit leakage current sensor collected
Output end output voltage, when the output voltage be in setting voltage range when, it is defeated to the control signal input unit
Second control signal out makes the control signal input unit to the test side of leakage current sensor input second voltage letter
Number.
Optionally, the control signal input unit includes:
First metal-oxide-semiconductor and the second metal-oxide-semiconductor；
Wherein, the grid of the first metal-oxide-semiconductor is connected to second control unit, the source electrode ground connection of first metal-oxide-semiconductor, institute
The drain electrode for stating the first metal-oxide-semiconductor is connected to the grid of second metal-oxide-semiconductor, and the drain electrode of second metal-oxide-semiconductor is connected to the electric leakage
The source electrode of the test side of flow sensor, second metal-oxide-semiconductor is connected to the first power supply.
Optionally, first metal-oxide-semiconductor is N-channel type, and second metal-oxide-semiconductor is P-channel type.
Optionally, the control signal input unit further include:
The first resistor and first capacitor being connected between the grid and source electrode of first metal-oxide-semiconductor；
The second resistance being connected in the drain electrode to the connection circuit of the grid of second metal-oxide-semiconductor of first metal-oxide-semiconductor；
The 3rd resistor being connected between the source electrode of second metal-oxide-semiconductor and the grid of second metal-oxide-semiconductor；
The 4th be connected in the drain electrode to the connection circuit of the test side of the leakage current sensor of second metal-oxide-semiconductor
Resistance；
The 5th resistance being connected between the drain electrode of second metal-oxide-semiconductor and the source electrode of first metal-oxide-semiconductor and the
Two capacitors.
Optionally, the first control unit and second control unit become one.
Optionally, the sampling unit includes:
6th resistance, third capacitor and clamp diode；
One end of 6th resistance is connected to the output end of the leakage current sensor, and the other end is connected to the clamper
Diode, the clamp diode are connected to described control unit, and one end of the third capacitor is connected to two pole of clamper
Between pipe and described control unit, other end ground connection.
Optionally, the two-way Vehicular charger further include:
The first end of one the 4th capacitor and a voltage-stabiliser tube in parallel, the 4th capacitor and voltage-stabiliser tube is respectively connected to described
The power end of leakage current sensor, second end are grounded respectively, and the supply voltage of the power end input is 5V.
Second aspect, the embodiment of the present invention also provide a kind of electric car, comprising: two-way vehicle-mounted charge as described above
Machine.
One or more embodiments of the invention has the advantages that
Scheme in the embodiment of the present invention, by the mutual cooperation between leakage current sensor, sampling unit and control unit,
Carry out the leakage current between the two-way Vehicular charger inversion output of real-time detection and casing, carry out earth leakage protective, prevent electric shock,
Realize the safe inversion output of two-way Vehicular charger, circuit is simple, and integrated level is high, highly reliable.
Detailed description of the invention
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Fig. 1 shows the overall co-ordination structural schematic diagrams of Vehicular charger two-way in the embodiment of the present invention；
Fig. 2 indicates the interior details structural schematic diagram of two-way Vehicular charger in the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are some of the embodiments of the present invention, instead of all the embodiments.Based on this hair
Embodiment in bright, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
The embodiment of the present invention provides a kind of two-way Vehicular charger, as shown in Figure 1, Figure 2, including:
For accessing connecting pin and the connection circuit of load.
Leakage current sensor U1 is arranged on the connection circuit.
Sampling unit is electrically connected, for acquiring the leakage current sensor with the output end of the leakage current sensor U1
The output voltage of the output end of U1.
First control unit is electrically connected with the sampling unit, for being in electric leakage inspection as the leakage current sensor U1
The output voltage of survey mode, the output end of the sampling unit leakage current sensor U1 collected is greater than given threshold
When, shutdown control is carried out to complete machine.
Two-way Vehicular charger has the function of biphase rectification and inversion, the L (fire which is used to be correspondingly connected with load
Line) it holds and is held with N (zero curve).Connection circuit is provided on two-way Vehicular charger, connection circuit is connect with connecting pin, realizes connection
The peripheral hardware at end realizes the connection with external other equipment by connecting pin and connection circuit.
Wherein, leakage current sensor U1 is arranged on the connection circuit, specifically: one is equipped in the middle part of leakage current sensor U1
Channel, which wears in the channels connects setting, to realize the earth leakage detection functions of inversion output process.
Wherein, leakage current sensor U1 is specially and is arranged on the connection circuit, realizes to two-way Vehicular charger inversion
The detection of leakage current between output and casing.As shown in Figure 1, L (firewire), N (zero curve) route in two-way Vehicular charger
L, N two lines road of upper increase leakage current sensor U1, two-way Vehicular charger inversion output pass through in leakage current sensor U1,
The sampling unit and first control unit form leakage current detection circuit.Wherein, leakage current sensor U1 is from in electric leakage
When detection pattern, the electric leakage during two-way Vehicular charger inversion output is realized specifically by the scheme of detection current difference
Detection and protection.
Leakage current sensor U1 has an output end, and for exporting detection voltage corresponding with testing result, electric leakage is spread
Sensor U1 tool is there are two mode, and one is detection of electrical leakage mode, another is Auto-Sensing Mode, when leakage current sensor U1 is in leakage
When electro-detection mode, for leakage current sensor U1 from output end output voltage, which is detection of electrical leakage voltage, is sensed with leakage current
The voltage that sampling obtains is transferred to first control unit by the sample circuit of the output end connection of device U1, so that first control unit
When judging that output voltage is greater than given threshold, i.e., when short circuit occurs in the inversion of two-way Vehicular charger, there are drain conditions
When, control complete machine shutdown, specially first control unit output are closed power supply of the machine control signal into two-way Vehicular charger and are opened
Powered-down road, two-way Vehicular charger can be acted on according to the pass machine control signal at this time, to report CAN (Controller
Area Network, controller local area network) bus failure information and do shutdown processing, battery management system or entire car controller
After receiving the fault message reported, electricity under vehicle is guided.
The two-way Vehicular charger is come real by the mutual cooperation between leakage current sensor, sampling unit and control unit
When detect leakage current between two-way Vehicular charger inversion output and casing, carry out earth leakage protective, prevent electric shock, realization
The safe inversion of two-way Vehicular charger exports, and circuit is simple, and integrated level is high, highly reliable.
As a preferred embodiment, wherein the two-way Vehicular charger further include: control signal input unit and the
Two control units.
Wherein, signal input unit is controlled, is electrically connected with the test side of the leakage current sensor U1, is used for the leakage
The test side input first voltage signal or second voltage signal of current sensor U1, wherein the leakage current sensor U1 is received
Auto-Sensing Mode is opened when the first voltage signal, opens detection of electrical leakage mode when receiving the second voltage signal.
Second control unit keeps the control signal defeated for exporting control signal to the control signal input unit
Enter unit and inputs first voltage signal or second voltage signal to the test side of the leakage current sensor U1.
Wherein, which is high level signal, and second control signal is low level signal.It is single in the second control
When member exports high level signal to control signal input unit, control signal input unit output is corresponding with the high level signal
First voltage signal, to control the unlatching of Auto-Sensing Mode, and low to control signal input unit output in the second control unit
When level signal, which exports second voltage signal corresponding with the low level signal, so that self-test mould
Formula is closed, and detection of electrical leakage mode is opened, and leakage current sensor executes leakage current test process under detection of electrical leakage mode.The sampling
Unit, first control unit and the second control unit form leakage current detection circuit.
Preferably, wherein first control unit and the second control unit can become one.Wherein, the first control unit
It is single-chip microcontroller with the second control unit, specifically can be the same or different control units being set on same single-chip microcontroller, the list
Piece machine is specially DSP (Digital Signal Processing, Digital Signal Processing) chip.By sample circuit and single-chip microcontroller
Row control realize leakage current test control, realize two-way Vehicular charger safe inversion output.
Specifically, which is specifically used for: first control signal is exported to the control signal input unit,
The control signal input unit is set to input first voltage signal to the test side of the leakage current sensor U1, and described in acquisition
The output voltage of the output end of the sampling unit leakage current sensor U1 collected, when the output voltage is in setting electricity
When pressing range, to control signal input unit output second control signal, make the control signal input unit to described
The test side of leakage current sensor U1 inputs second voltage signal.
Second control unit makes to control signal input unit to the leakage current sensor U1 in output first control signal
Test side input first voltage signal when, leakage current sensor U1 enters Auto-Sensing Mode, and leakage current sensor U1's is defeated at this time
The output voltage of outlet is self-test voltage, when the voltage is in setting voltage range, it is determined that self-test is normal, and the second control is single
Member exports second control signal to control signal input unit, makes to control detection of the signal input unit to leakage current sensor U1
Input second voltage signal in end opens detection of electrical leakage process, passes through leakage so that leakage current sensor U1 enters detection of electrical leakage mode
Leakage current between the two-way Vehicular charger inversion output of current sensor real-time detection and casing carries out earth leakage protective, prevents
Electric shock occurs, and realizes the safe inversion output of two-way Vehicular charger.
As a preferred embodiment, as shown in connection with fig. 2, wherein control signal input unit includes: the first MOS
(Metal-Oxide-Semiconductor, Metal-oxide-semicondutor) pipe Q2 and the second metal-oxide-semiconductor Q1.
Wherein, the grid of the first metal-oxide-semiconductor Q2 is connected to second control unit, and the source electrode of the first metal-oxide-semiconductor Q2 connects
Ground, the drain electrode of the first metal-oxide-semiconductor Q2 are connected to the grid of the second metal-oxide-semiconductor Q1, the drain electrode connection of the second metal-oxide-semiconductor Q1
To the test side of the leakage current sensor U1, the source electrode of the second metal-oxide-semiconductor Q1 is connected to the first power supply.Preferably, described
First metal-oxide-semiconductor Q2 is N-channel type, and the second metal-oxide-semiconductor Q1 is P-channel type.
As shown in Fig. 2, single-chip microcontroller passes through DSP IN pin input high level after two-way Vehicular charger powers on, thus the
One metal-oxide-semiconductor Q2 conducting, then the second metal-oxide-semiconductor Q1 is connected, therefore the pin CHK of leakage current sensor U1 is placed in high level, this
When leakage current sensor U1 will enter Auto-Sensing Mode, the pin OUT of leakage current sensor U1 will export corresponding voltage value, pass through
Sample circuit is exported through pin DSP OUT to control unit, i.e. single-chip microcontroller, and single-chip microcontroller judges certainly after collecting corresponding voltage value
Inspection is normal, then sets low to pin DSP IN, leakage current sensor U1 enters the normal operation mode of detection of electrical leakage, by leakage
The detection of electric current, exports corresponding voltage value and acquires for single-chip microcontroller and judge from pin OUT, when judging that leakage current is greater than according to voltage
When preset threshold, charger reports CAN bus fault message and does shutdown processing, and battery management system or entire car controller receive
To after the fault message, electricity under vehicle is guided.Single-chip microcontroller reference level is used in this example, thus pin Vref is passed through into resistance
R4 ground connection.Wherein, the voltage of first power supply is+5V.
Specifically, control signal input unit further include: be connected to the grid and source electrode of the first metal-oxide-semiconductor Q2
Between first resistor R1 and first capacitor C4；The drain electrode of the first metal-oxide-semiconductor Q2 is connected in the grid of the second metal-oxide-semiconductor Q1
Second resistance R6 on the connection circuit of pole；It is connected to the source electrode of the second metal-oxide-semiconductor Q1 and the grid of the second metal-oxide-semiconductor Q1
Between 3rd resistor R5；It is connected to the company of test side of the drain electrode of the second metal-oxide-semiconductor Q1 to the leakage current sensor U1
Meet the 4th resistance R2 on circuit；Be connected to the second metal-oxide-semiconductor Q1 drain electrode and the source electrode of the first metal-oxide-semiconductor Q2 it
Between the 5th resistance R7 and the second capacitor C2.
Each capacitor and resistor assembly that are arranged in control signal input unit, by with the first metal-oxide-semiconductor and the second metal-oxide-semiconductor
The effect of circuit filtering, partial pressure protection is realized in circuit cooperation, it is ensured that the good fortune of circuit structure in control signal input unit
Row, protects the normal operation of two metal-oxide-semiconductors, and circuit structure is simple, and integrated level is high, highly reliable.
As a preferred embodiment, as shown in connection with fig. 2, wherein the sampling unit includes: the 6th resistance R3, third
Capacitor C3 and clamp diode D2.
One end of 6th resistance R3 is connected to the output end of leakage current sensor U1, and the other end is connected to the clamper two
Pole pipe D2, the clamp diode D2 are connected to described control unit, and one end of the third capacitor C3 is connected to the clamper
Between diode D2 and described control unit, other end ground connection.
The control of the output voltage to the output end of leakage current sensor U1 is realized in the setting of clamp diode, avoids voltage
It is excessively high that single-chip microcontroller is damaged, specifically, the positive termination+3.3V voltage of the clamp diode, negative pole end ground connection.
As a preferred embodiment, as shown in connection with fig. 2, wherein the two-way Vehicular charger further include: in parallel one
A 4th capacitor C1 and voltage-stabiliser tube D1.
Specifically, wherein the first end of the 4th capacitor C1 and voltage-stabiliser tube D1 are respectively connected to the leakage current sensing
The power end of device U1, second end are grounded respectively, and the supply voltage of the power end input is 5V.Wherein, the 4th capacitor is filter
Wave capacitor, the 4th capacitor C1 and voltage-stabiliser tube D1 form power circuit, and sensor is received by VCC pin as power end outer
Portion's power supply provides working power to be embodied as the leakage current test of leakage current sensor.
A kind of electric car is also disclosed in the embodiment of the present invention, comprising: foregoing two-way Vehicular charger.Pass through electric leakage
Flow sensor and matched detection circuit, the electric leakage between the two-way Vehicular charger inversion output of real-time detection and casing
Stream carries out earth leakage protective, prevents electric shock, realizes the safe inversion output of two-way Vehicular charger, circuit is simple, integrated level
Height, it is highly reliable.
All the embodiments in this specification are described in a progressive manner, the highlights of each of the examples are with
The difference of other embodiments, the same or similar parts between the embodiments can be referred to each other.
Although the preferred embodiment of the embodiment of the present invention has been described, once a person skilled in the art knows bases
This creative concept, then additional changes and modifications can be made to these embodiments.So the following claims are intended to be interpreted as
Including preferred embodiment and fall into all change and modification of range of embodiment of the invention.
Finally, it is to be noted that, in embodiments of the present invention, relational terms such as first and second and the like are only
Only it is used to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying these realities
There are any actual relationship or orders between body or operation.Moreover, the terms "include", "comprise" or its it is any its
He is intended to non-exclusive inclusion by variant, so that process, method, article or terminal including a series of elements are set
Standby includes not only those elements, but also including other elements that are not explicitly listed, or further includes for this process, side
Method, article or the intrinsic element of terminal device.In the absence of more restrictions, being limited by sentence "including a ..."
Fixed element, it is not excluded that including that there is also other identical in the process, method of the element, article or terminal device
Element.
Above-described is the preferred embodiment of the present invention, it should be pointed out that the ordinary person of the art is come
It says, can also make several improvements and retouch under the premise of not departing from principle of the present invention, these improvements and modifications also exist
In protection scope of the present invention.
Claims (7)
1. a kind of two-way Vehicular charger characterized by comprising
For accessing connecting pin and the connection circuit of load；
Leakage current sensor is arranged on the connection circuit；
Sampling unit is electrically connected with the output end of the leakage current sensor, for acquiring the output of the leakage current sensor
The output voltage at end；
First control unit is electrically connected with the sampling unit, for being in detection of electrical leakage mode when the leakage current sensor,
The output voltage of the output end of the sampling unit leakage current sensor collected be greater than given threshold when, to complete machine into
Row shutdown control；
The two-way Vehicular charger further include:
Signal input unit is controlled, is electrically connected with the test side of the leakage current sensor, is used for the leakage current sensor
Test side input first voltage signal or second voltage signal, wherein the leakage current sensor receives the first voltage letter
Number when open Auto-Sensing Mode, detection of electrical leakage mode is opened when receiving the second voltage signal；
Second control unit keeps the control signal input single for exporting control signal to the control signal input unit
Member inputs first voltage signal or second voltage signal to the test side of the leakage current sensor；
Second control unit is specifically used for:
First control signal is exported to the control signal input unit, makes the control signal input unit to the leakage current
The test side of sensor inputs first voltage signal, and obtains the defeated of the sampling unit leakage current sensor collected
The output voltage of outlet exports the to the control signal input unit when the output voltage is in setting voltage range
Two control signals, make the control signal input unit input second voltage signal to the test side of the leakage current sensor；
The control signal input unit includes:
First metal-oxide-semiconductor and the second metal-oxide-semiconductor；
Wherein, the grid of the first metal-oxide-semiconductor is connected to second control unit, the source electrode ground connection of first metal-oxide-semiconductor, and described the
The drain electrode of one metal-oxide-semiconductor is connected to the grid of second metal-oxide-semiconductor, and the drain electrode of second metal-oxide-semiconductor is connected to the electric leakage and spreads
The source electrode of the test side of sensor, second metal-oxide-semiconductor is connected to the first power supply.
2. two-way Vehicular charger according to claim 1, which is characterized in that
First metal-oxide-semiconductor is N-channel type, and second metal-oxide-semiconductor is P-channel type.
3. two-way Vehicular charger according to claim 1, which is characterized in that the control signal input unit is also wrapped
It includes:
The first resistor and first capacitor being connected between the grid and source electrode of first metal-oxide-semiconductor；
The second resistance being connected in the drain electrode to the connection circuit of the grid of second metal-oxide-semiconductor of first metal-oxide-semiconductor；
The 3rd resistor being connected between the source electrode of second metal-oxide-semiconductor and the grid of second metal-oxide-semiconductor；
The 4th electricity being connected in the drain electrode to the connection circuit of the test side of the leakage current sensor of second metal-oxide-semiconductor
Resistance；
The 5th resistance being connected between the drain electrode of second metal-oxide-semiconductor and the source electrode of first metal-oxide-semiconductor and the second electricity
Hold.
4. two-way Vehicular charger according to claim 1, which is characterized in that the first control unit and described second
Control unit becomes one.
5. two-way Vehicular charger according to claim 1, which is characterized in that the sampling unit includes:
6th resistance, third capacitor and clamp diode；
One end of 6th resistance is connected to the output end of the leakage current sensor, and the other end is connected to two pole of clamper
Pipe, the clamp diode are connected to described control unit, one end of the third capacitor be connected to the clamp diode with
Between described control unit, other end ground connection.
6. two-way Vehicular charger according to claim 1, which is characterized in that the two-way Vehicular charger further include:
The first end of one the 4th capacitor and a voltage-stabiliser tube in parallel, the 4th capacitor and voltage-stabiliser tube is respectively connected to the electric leakage
The power end of flow sensor, second end are grounded respectively, and the supply voltage of the power end input is 5V.
7. a kind of electric car characterized by comprising such as two-way Vehicular charger as claimed in any one of claims 1 to 6.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710512125.6A CN107351687B (en) | 2017-06-28 | 2017-06-28 | Two-way vehicle-mounted charger and electric automobile |
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| CN201710512125.6A CN107351687B (en) | 2017-06-28 | 2017-06-28 | Two-way vehicle-mounted charger and electric automobile |
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| CN114720809A (en) * | 2022-06-09 | 2022-07-08 | 深圳市明珞锋科技有限责任公司 | Vehicle-mounted bidirectional charger test system and control method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102222958A (en) * | 2011-06-21 | 2011-10-19 | 清华大学深圳研究生院 | Vehicle-mounted bidirectional charger for electric automobile |
| CN202119848U (en) * | 2011-05-31 | 2012-01-18 | 比亚迪股份有限公司 | Charger testing equipment |
| CN203278368U (en) * | 2013-05-20 | 2013-11-06 | 太原市煜泽科技有限公司 | Charger |
| EP2869075A1 (en) * | 2013-11-04 | 2015-05-06 | ABB Technology AG | System and method for detecting a leakage from power cables of a DC bus to ground |
| CN106712234A (en) * | 2017-02-24 | 2017-05-24 | 北京新能源汽车股份有限公司 | Current overcurrent protection circuit, bidirectional charger and electric automobile |
-
2017
- 2017-06-28 CN CN201710512125.6A patent/CN107351687B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202119848U (en) * | 2011-05-31 | 2012-01-18 | 比亚迪股份有限公司 | Charger testing equipment |
| CN102222958A (en) * | 2011-06-21 | 2011-10-19 | 清华大学深圳研究生院 | Vehicle-mounted bidirectional charger for electric automobile |
| CN203278368U (en) * | 2013-05-20 | 2013-11-06 | 太原市煜泽科技有限公司 | Charger |
| EP2869075A1 (en) * | 2013-11-04 | 2015-05-06 | ABB Technology AG | System and method for detecting a leakage from power cables of a DC bus to ground |
| CN106712234A (en) * | 2017-02-24 | 2017-05-24 | 北京新能源汽车股份有限公司 | Current overcurrent protection circuit, bidirectional charger and electric automobile |
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| CN107351687A (en) | 2017-11-17 |
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