CN104691350B - The electric discharge device of electricity more than the high voltage component of electric automobile - Google Patents
The electric discharge device of electricity more than the high voltage component of electric automobile Download PDFInfo
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- CN104691350B CN104691350B CN201510085297.0A CN201510085297A CN104691350B CN 104691350 B CN104691350 B CN 104691350B CN 201510085297 A CN201510085297 A CN 201510085297A CN 104691350 B CN104691350 B CN 104691350B
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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
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- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
Embodiments provide the electric discharge device of electricity more than the high voltage component of a kind of electric automobile.This device includes: often electrical switching circuit, high-voltage relay control circuit and high voltage discharge circuit；When electric automobile electricity condition under high pressure, the first light coupling relay in normal electrical switching circuit receives the low-voltage power supply voltage of outside input and is transferred to high-voltage relay control circuit；Low-voltage power supply voltage is transferred to high voltage discharge circuit by the outfan of the second light coupling relay in high-voltage relay control circuit；Conductive discharge network in high voltage discharge circuit carries out discharge process to the remaining electricity between the high pressure both positive and negative polarity bus in high voltage control box.The electric discharge device of the embodiment of the present invention is used for dismantling, examination and repair for high-pressure parts time, as long as press manual discharge switch can release whole high-pressure system exist high-voltage residual-electricity, reach human safety voltage, without the remaining electricity using circuit tester manual measurement high voltage component, the saving time, and safety is high, it is simple to safety operation.
Description
Technical field
The present invention relates to electric vehicle engineering field, particularly relate to electricity more than the high voltage component of a kind of electric automobile
Electric discharge device.
Background technology
The bridge that high voltage control box connects as power accumulator and high-voltage electrical apparatus parts, plays electric energy and divides
Join, high voltage protective etc. acts on.The HVDC input end of the high voltage parts of electric automobile is that parallel connection sets
Meter, and high voltage parts is mostly with bigger electric capacity, the total capacitance of whole high-pressure system is each high pressure
Parts institute capacitor sum.
For ensureing to power on safety, when power accumulator high pressure powers on, it is necessary to start precharge loop, preliminary filling
Electricity loop is mainly made up of pre-charge-relay, pre-charge resistance, and design at present requires through being pre-charged
Cheng Hou, pre-charge pressure reaches the 95% of power accumulator ceiling voltage, and pre-charge resistance selection resistance is
The metal aluminum hull power resistor of 50 Ω/100W, the total capacitance value of high-pressure system is about 1500 μ F, according to
Single order zero state response circuit, it is known that timeconstantτ=R*C=50*1500*10-6=75ms, pre-charge pressure
Reach the 95% of power accumulator total voltage and probably need the time constant of three times, namely have 3 τ=225ms left
Right.
The power accumulator charging of electric automobile terminates or under car load after electricity, and whole high tension loop is in not work
Making state, the remaining electricity in high voltage parts electric capacity can preserve always in theory, but due to distribution capacity, absolutely
The existence of edge resistance etc., the actually remaining electricity in high voltage parts electric capacity can slowly be released, but may be needed
Time that will be longer.
For the high voltage parts that the capacitances such as electric machine controller are bigger, in its internal capacitance, remaining capacitance is more
Greatly, overhauling, safeguard, when changing, staff is touched these high voltage parts high input voltage DC terminal and can be carried
Carry out electrical shock hazard.If high pressure both positive and negative polarity short circuit, electric capacity moment are produced larger current, bring cause by this mistiming
Critically ill evil.
For maintainer, during dismounting and change high voltage parts, it is required for using circuit tester to measure
Whether high voltage parts port there is also high-voltage residual-electricity, when only high-voltage residual-electricity is less than human safety voltage 36V
Just can operate, thus dismounting associated components before by high voltage parts exist high-voltage residual-electricity release to
Human safety voltage is extremely important.
The high-tension numerical value of current car load can be read from instrumental panel when car load high pressure powers on, but when whole
During overall height pressure electricity, instrumental panel does not works, it is impossible to judge that high voltage component the most also has remaining electricity.Existing
A kind of in technology detects the high voltage parts port method whether with high-voltage residual-electricity: work as maintainer
During to some high voltage parts repair and maintenance of electric automobile, employing circuit tester is measured high voltage parts port and is
No with high-voltage residual-electricity.
Whether above-mentioned detection high voltage parts port of the prior art is with the shortcoming of method of high-voltage residual-electricity
For: the method relies on whether there is also high pressure on manual measurement high voltage bus.Look into when overhauling to maintainer
See and make troubles, and when measuring, need disconnection associated high voltage connector just can measure electricity of whether having a surplus.
Further, the method can not carry out discharge process to high-voltage residual-electricity present on high voltage parts port.
Summary of the invention
The embodiment provides the electric discharge device of electricity more than the high voltage component of a kind of electric automobile, with reality
Now electricity more than the high voltage component of electric automobile is effectively released.
The electric discharge device of electricity more than the high voltage component of a kind of electric automobile, including: often electrical switching circuit, high pressure
Control relay circuit and high voltage discharge circuit；
Described normal electrical switching circuit, is used for including the first light coupling relay, is at described electric automobile
During high pressure power-down state, receive the low-voltage power supply voltage of outside input, described first light coupling relay defeated
Go out end and described low-voltage power supply voltage is transferred to described high-voltage relay control circuit；
Described high-voltage relay control circuit, for including the second light coupling relay and the control that interconnect
Device processed, when described electric automobile electricity condition under high pressure, the setting voltage of described controller output passes
Being defeated by the input of described second light coupling relay, the outfan of described second light coupling relay is by described low
Pressure supply voltage is transferred to described high voltage discharge circuit；
Described high voltage discharge circuit, is used for including conductive discharge network, the high pressure of this conductive discharge network
Discharge end junction point selects on the high pressure both positive and negative polarity bus in high voltage control box, when described conductive discharge net
After network receives described low-voltage power supply voltage, described conductive discharge network is to the height in described high voltage control box
Remaining electricity between positive pressure negative electrode bus carries out discharge process.
Preferably, described device is arranged in the high voltage control box of electric automobile, described conductive discharge network
Electrion end junction point include cathode voltage collection point and cathode voltage collection point, described cathode voltage
Collection point is connected by the high-voltage positive electrode bus of high voltage control box and the positive pole of power accumulator, described negative pole
Voltage acquisition point is connected by the negative pole positive electrode bus of high voltage control box and the negative pole of power accumulator.
Preferably, described device also includes: condition indication circuit, and this condition indication circuit includes going here and there mutually
The LED 1 of connection connection and current-limiting resistance R5, described current-limiting resistance R5 and described first optocoupler continue
The outfan of electrical equipment connects, when the outfan of described first light coupling relay exports low-voltage power supply voltage,
Described LED 1 is lighted.
Preferably, described device also includes: low-voltage power supply circuit, and described low-voltage power supply circuit includes:
Starting ignition circuit and charging wake-up circuit, described starting ignition circuit and described charging wake-up circuit are in parallel
Connect, described charging wake-up circuit and described starting ignition circuit concatenate respectively anti-reverse diode D1 and
The cathode terminal of D2, described anti-reverse diode D1 and D2 is in parallel, and described anti-reverse diode D1 and D2 is in parallel
Place concatenates a current-limiting resistance R1, in the input of this current-limiting resistance R1 and described first light coupling relay again
Light emitting diode connect；
When described electric automobile is in charged state, described charging wake-up circuit works；When described electronic
When automobile is in power-up state, described starting ignition circuit works；When described electric automobile is in lower electricity shape
During state, transmit low-voltage power supply electricity by often electricity power supply circuits to the outfan of described first light coupling relay
Pressure.
Preferably, described first light coupling relay is closed type photocoupling relay, when described electronic vapour
Luminescence two when car is in charged state or power-up state, in the input of described first light coupling relay
Pole pipe conducting, the outfan of described first light coupling relay disconnects；When described electric automobile is in lower electricity shape
During state, the outfan Guan Bi of described first light coupling relay, the outfan of described first light coupling relay will
Described low-voltage power supply voltage is transferred to described high-voltage relay control circuit.
Preferably, described high-voltage relay control circuit also includes dc voltage changer, described direct current
The outfan of electric pressure converter and described controller, described first light coupling relay connects, described second light
Coupling relay is open type light coupling relay, the outfan of described first light coupling relay and described second light
The positive pole of the diode in the input of coupling relay connects, the I/O output port of described controller and described
The negative pole of the diode in the input of the second light coupling relay connects；
When described electric automobile is in power-down state, described dc voltage changer is by described low-voltage power supply
After voltage is converted to low-voltage dc voltage, it is transferred to described controller, the I/O output port of described controller
The light emitting diode described low-voltage dc voltage being transferred in the input of described second light coupling relay
Negative pole, the low-voltage power supply voltage of the outfan output of described first light coupling relay is transferred to described second light
The positive pole of the light emitting diode in the input of coupling relay, in the input of described second light coupling relay
LEDs ON, described second light coupling relay outfan Guan Bi, described second optocoupler relay
The low-voltage power supply voltage of the outfan output of device is transferred to described high voltage discharge circuit.
Preferably, the I/O output port of described controller is after the output low-voltage dc voltage setting time, defeated
Go out the high-voltage dc voltage negative pole to the light emitting diode in the input of described second light coupling relay, institute
State light emitting diode in the input of the second light coupling relay to disconnect, described second light coupling relay defeated
Go out end to disconnect.
Preferably, described high voltage discharge circuit also includes relay switch, this relay switch and described
Conductive discharge network, the outfan of described second light coupling relay connect；
When the outfan of described second light coupling relay outputs low-voltage power supply voltage, described electrion
Relay switch Guan Bi in circuit, described conductive discharge network work.
Preferably, described conductive discharge network include resistance R4 and R5 being connected in parallel, described resistance R4 and
R5 concatenates high-voltage insurance Fu2 and Fu3 respectively, when short trouble occurs in described resistance R4 and/or R5, disconnects
The electrical connection of described conductive discharge network.
The technical scheme that thered is provided by embodiments of the invention described above is it can be seen that the electric discharge of the embodiment of the present invention
Device is used for dismantling, examination and repair for high-pressure parts time, can release whole height as long as pressing manual discharge switch
The high-voltage residual-electricity that pressure system exists, reaches human safety voltage, high without using circuit tester manual measurement
The remaining electricity of splenium part, saves the time, and safety is high, it is simple to safety operation.
Aspect and advantage that the present invention adds will part be given in the following description, and these are by from following
Description becomes obvious, or recognized by the practice of the present invention.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of the embodiment of the present invention, institute in embodiment being described below
The accompanying drawing used is needed to be briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some bright embodiments, for those of ordinary skill in the art, are not paying creative work
Under premise, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
More than the high voltage component of the electric automobile that Fig. 1 provides for the embodiment of the present invention one, the electric discharge device of electricity is at high pressure
Control the electrical connection schematic diagram in box；
The electric discharge device of electricity more than the high voltage component of a kind of electric automobile that Fig. 2 provides for the embodiment of the present invention one
Internal structure block diagram；
The electric discharge device of electricity more than the high voltage component of a kind of electric automobile that Fig. 3 provides for the embodiment of the present invention one
Concrete electrical connection diagram；
The electric discharge device of electricity more than the high voltage component of a kind of electric automobile that Fig. 4 provides for the embodiment of the present invention two
Discharge process flow chart；
Fig. 5 is positioned at the operation outside high voltage control box and display floater signal for what the embodiment of the present invention two provided
Figure.
Detailed description of the invention
Embodiments of the present invention are described below in detail, and the example of described embodiment is shown in the drawings,
The most same or similar label represents same or similar element or has same or like merit
The element of energy.The embodiment described below with reference to accompanying drawing is exemplary, is only used for explaining this
Bright, and be not construed as limiting the claims.
Those skilled in the art of the present technique are appreciated that unless expressly stated, singulative used herein
" one ", " one ", " described " and " being somebody's turn to do " may also comprise plural form.Will be further understood that
, the wording used in the description of the present invention " includes " referring to there is described feature, integer, step
Suddenly, operation, element and/or assembly, but it is not excluded that existence or add other features one or more,
Integer, step, operation, element, assembly and/or their group.It should be understood that when we claim element quilt
" connecting " or during " coupled " to another element, it can be directly connected or coupled to other elements, or
Intermediary element can also be there is in person.Additionally, " connection " used herein or " coupling " can include nothing
Line connects or couples.Wording "and/or" used herein includes that what one or more was associated lists item
Any cell and all combinations.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein
(including technical term and scientific terminology) has and one of the those of ordinary skill in art of the present invention
As understand identical meaning.Should also be understood that those terms defined in such as general dictionary should
It is understood to that there is the meaning consistent with the meaning in the context of prior art, and unless as here one
Sample defines, and will not explain by idealization or the most formal implication.
For ease of the understanding to the embodiment of the present invention, below in conjunction with accompanying drawing as a example by several specific embodiments
It is further explained explanation, and each embodiment is not intended that the restriction to the embodiment of the present invention.
Embodiment one
More than the high voltage component of a kind of electric automobile that this embodiment provides, the electric discharge device of electricity is at high voltage control box
Interior electrical connection schematic diagram is as it is shown in figure 1, the electrion end junction point of this electric discharge device selects at high pressure
Control on the high pressure both positive and negative polarity bus in box, respectively cathode voltage collection point A (HV+) and cathode voltage
Collection point B (HV-), cathode voltage collection point HV+ pass through high-voltage positive electrode bus and the power of high voltage control box
The positive pole of accumulator connects, and cathode voltage collection point HV-passes through the negative pole positive electrode bus of high voltage control box and moves
The negative pole of power accumulator connects.
Owing to discharge loop is pure resistive loads, it is not related to electric current positive-negative polarity, so electric discharge device
As long as electrion two ends connect A and B, power to this electric discharge device by low pressure 12V.
The internal junction of the electric discharge device of electricity more than the high voltage component of a kind of electric automobile that the embodiment of the present invention provides
Structure block diagram is as in figure 2 it is shown, be mainly made up of five parts: low-voltage power supply circuit, normal electrical switching circuit, high pressure
Control relay circuit, condition indication circuit and high voltage discharge circuit.
Described normal electrical switching circuit, is used for including the first light coupling relay SW1, at described electric automobile
When high pressure power-down state, receive the low-voltage power supply voltage of outside input, described first light coupling relay SW1
Outfan described low-voltage power supply voltage is transferred to described high-voltage relay control circuit.
Described high-voltage relay control circuit, for include interconnect the second light coupling relay SW2 and
Controller, when described electric automobile electricity condition under high pressure, the setting voltage of described controller output
It is transferred to the input of described second light coupling relay SW2, the outfan of described second light coupling relay SW2
Described low-voltage power supply voltage is transferred to described high voltage discharge circuit；
Described high voltage discharge circuit, is used for including conductive discharge network, the high pressure of this conductive discharge network
Discharge end junction point selects on the high pressure both positive and negative polarity bus in high voltage control box, when described conductive discharge net
After network receives described low-voltage power supply voltage, described conductive discharge network is to the height in described high voltage control box
Remaining electricity between positive pressure negative electrode bus carries out discharge process.
Described low-voltage power supply circuit, is used for when described electric automobile is in charging or power-up state,
Input transmission low-voltage power supply voltage in the first light coupling relay SW1 in described normal electrical switching circuit.
Described condition indication circuit, for indicating electric vapour by the status indicator lamp of light emitting diode
Car is in power-up state, charged state or car load and has descended electricity, and is in discharge condition.
The concrete electricity of the electric discharge device of electricity more than the high voltage component of a kind of above-mentioned electric automobile that this embodiment provides
Gas connects figure as shown in Figure 3.From the figure 3, it may be seen that low-voltage power supply circuit includes: starting ignition circuit and charging
Wake-up circuit, wherein, starting ignition circuit and charging wake-up circuit are connected in parallel.Starting ignition circuit
For ON electricity (the 12V power supply obtained after ignition switch startup).
From the figure 3, it may be seen that charging wakes up 12V and ON electricity 12V up and concatenates anti-reverse diode D1 and D2 respectively, so
After, in parallel at the cathode terminal of D1 and D2, it is ensured that not concatenate, at D1 and D2 parallel connection, concatenate a current limliting electricity again
Resistance R1, in the input of current-limiting resistance R1 and SW1, the positive pole of light emitting diode connects, and controls the input of SW1
LEDs ON in end.
When the power accumulator of electric automobile charges, charging wake-up circuit work, Vehicular charger provides and fills
Electricity wakes up 12V up；When car load powers on, starting ignition circuit, i.e. ON electricity 12V works, and above two state is all
For non-power-down state (including charged state and power-up state), its process is it is believed that and car load power-down state
For inverse state.When electric automobile is in power-down state, continued to the first optocoupler by often electricity power supply circuits
The outfan transmission low-voltage power supply voltage of electrical equipment SW1, often electricity power supply circuits are directly by 12V storage battery power supply.
Often the first light coupling relay SW1 in electrical switching circuit is closed type photocoupling relay, when electronic
When automobile is in charged state or power-up state, charging wake-up circuit or starting ignition circuit are to first
The input input 12V voltage of light coupling relay SW1, the luminescence in the input of the first light coupling relay SW1
Diode current flow, the outfan of the first light coupling relay SW1 disconnects；When described electric automobile is in lower electricity shape
During state, the outfan Guan Bi of the first light coupling relay SW1, the outfan of the first light coupling relay SW1 will often
The 12V low-voltage power supply voltage of electricity power supply circuits output is transferred to high-voltage relay control circuit.
High-voltage relay control circuit also includes dc voltage changer U1, dc voltage changer U1 and control
Device U2 processed, the outfan of the first light coupling relay SW1 connect.Second light coupling relay SW2 is open type light
Coupling relay, the outfan of described first light coupling relay SW1 and the input of the second light coupling relay SW2
In diode positive pole connect, I/O output port and described second optocoupler of described controller U2U2 continue
The negative pole of the diode in the input of electrical equipment SW2 connects.
When described electric automobile is in power-down state, described dc voltage changer U1 is by 12V low-voltage power supply
After voltage is converted to 5V low-voltage dc voltage, the I/O output port being transferred to controller U2, controller U2 will
5V low-voltage dc voltage is transferred to the negative of the light emitting diode in the input of described second light coupling relay SW2
Pole, the 12V low-voltage power supply voltage of the outfan output of the first light coupling relay SW1 is transferred to the second optocoupler and continues
The positive pole of the light emitting diode in the input of electrical equipment SW2, in the input of the second light coupling relay SW2
LEDs ON, the outfan Guan Bi of the second light coupling relay SW2, the second light coupling relay SW2
The 12V low-voltage power supply voltage of outfan output is transferred to described high voltage discharge circuit.
The I/O output port of controller U2 is after output 5V low-voltage dc voltage sets the time (225ms), defeated
Go out high-voltage dc voltage (high level) to the light-emitting diodes in the input of described second light coupling relay SW2
The negative pole of pipe, the light emitting diode in the input of described second light coupling relay SW2 disconnects, and described second
The outfan of light coupling relay SW2 disconnects, and now, high voltage discharge circuit is only U1 and U2 power consumption,
And low-power consumption.When vehicle is in power-down state, if not turning off SW2, it is defeated that 12V often electricity supplies electricity to SW2 always
Enter end, and if I/O mouth output low level always, in SW2, light emitting diode can work always, is unsatisfactory for
Low power dissipation design.
High voltage discharge circuit mainly includes 10A high-voltage relay SW3 and conductive discharge network.High-voltage relay
Use low voltage control, it is ensured that high voltage discharge circuit and the electrical isolation of low-voltage power supply circuit, improve design
Safety.Conductive discharge network includes that two is 100 ohm with valued resistor R3 and R4, R3 and R4 type selecting
/ 100 watts of aluminum casing resistors, and use parallel redundancy design, the ability by electric current, R3 can be improved simultaneously
With concatenate respectively on R4 high-voltage insurance Fu2 and Fu3, Fu2 and Fu3 select same specification 16A high-voltage insurance, when
There is disconnecting during short trouble the electrical connection of discharge loop in R3 and (or) R4.The core in electrion loop
The heart is high-voltage relay SW3, and its low voltage control end must use 12V to power, and vehicle is in power-down state
Time, 12V often electricity exports through SW1, is simultaneously supplied to SW2 input and outfan, when the I/O mouth controlling U2
Output 225ms low level, SW2 output 12V is to SW3 input, thus controls high-voltage relay adhesive, high
Potential relay closes, thus the discharge circuit point of A in FIG and B point are by high-voltage wiring harness and high voltage parts
Electric capacity forms discharge loop, and present in high voltage parts electric capacity, remaining electricity is released through discharge loop.
For ensureing to power on safety, when power accumulator high pressure powers on and power accumulator charges, it is necessary to open
Dynamic precharge loop, as it is shown in figure 1, mainly there is pre-charge-relay in precharge loop (in Fig. 1
SHV1), pre-charge resistance (RHV) and power accumulator main negative pole relay (SHV2) composition, mesh
Front design requires after pre-charge process, and precharge total voltage reaches the 95% of power accumulator ceiling voltage
, RHV pre-charge resistance type selecting is the aluminum casing resistor of 50 Ω/100W, and high-pressure system total capacitance value is general
It is 1500 μ F, according to single order zero state response circuit, it is known that timeconstantτ=R*C=50*1500*10-
6=75ms, is pre-charged to the time constant of 95% needs three times, namely has about 225ms.
High-voltage residual-electricity discharge process and pre-charge process contrast, from pre-charge process, during electric discharge
Between be also probably 225ms.This device obtain 12V often electricity time automatic star t-up discharge circuit, quickly time
In release remaining electricity, meet electric discharge requirement.Very fast in view of discharge time, so status indicator lamp
When LED1 lights, substantially discharge process terminates, namely LED1 can be as completion status instruction of discharging
Lamp.
The electric discharge device of the embodiment of the present invention is low power dissipation design, when car load powers on or is in charged state,
Low pressure 12V is powered only provides a few mA electric current, and for low pressure 12V battery, the power of consumption is negligible not
Meter.
Embodiment two
The discharge process stream of the electric discharge device of electricity more than the high voltage component of a kind of electric automobile that this embodiment provides
Journey as shown in Figure 4, the processing procedure including following:
Judge whether LED 1 is lighted, when LED 1 is not lighted, then optocoupler is described
The load outputs of relay SW1 disconnects, and car load is in non-power-down state, is i.e. in the shape that powers on or charge
State；When LED 1 is lighted, then the load outputs Guan Bi of explanation light coupling relay SW1, car load
Having descended electricity, the remaining electricity of high voltage component has been released.
The status indicator lamp of the electric discharge device of the embodiment of the present invention and button are installed at high voltage control lid,
What this embodiment provided is positioned at the operation outside high voltage control box and display floater schematic diagram button and display lamp
Panel, as it is shown in figure 5, include the display lamp of LED 1, passes through light emitting diode the most intuitively
Whether LED1 lights judges that the remaining electricity of high voltage component has been released.
In sum, the electric discharge device of the embodiment of the present invention is used for dismantling, examination and repair for high-pressure parts time, only
Connect often electricity power supply circuits can release the high-voltage residual-electricity that whole high-pressure system exists, reach human-body safety electricity
Pressure, without the remaining electricity of employing circuit tester manual measurement high voltage component, saves the time, and safety is high,
It is easy to safety operation.
High voltage control box is positioned at forward engine room, and it is high that the electric discharge device of the embodiment of the present invention is installed on electric automobile
In voltage-controlled box processed, the power supply indicator of high-voltage residual-electricity electric discharge exposes from high voltage control box top cover, it is simple to maintenance
Human users.
The electric discharge device of the embodiment of the present invention have employed safe design, it is ensured that in driving and charging process, dress
The discharge loop putting middle design does not works, and not as load, thus does not consume power accumulator electricity.
One of ordinary skill in the art will appreciate that: accompanying drawing is the schematic diagram of an embodiment, in accompanying drawing
Module or flow process not necessarily implement necessary to the present invention.
As seen through the above description of the embodiments, those skilled in the art is it can be understood that arrive
The present invention can add the mode of required general hardware platform by software and realize.Based on such understanding,
The part that prior art is contributed by technical scheme the most in other words can be with software product
Form embody, this computer software product can be stored in storage medium, such as ROM/RAM, magnetic
Dish, CD etc., including some instructions with so that computer equipment (can be personal computer,
Server, or the network equipment etc.) perform each embodiment of the present invention or some part institute of embodiment
The method stated.
Each embodiment in this specification all uses the mode gone forward one by one to describe, identical between each embodiment
Similar part sees mutually, and what each embodiment stressed is different from other embodiments
Part.For device or system embodiment, owing to it is substantially similar to embodiment of the method,
So describing fairly simple, relevant part sees the part of embodiment of the method and illustrates.Above retouched
The Apparatus and system embodiment stated is only schematically, the wherein said unit illustrated as separating component
Can be or may not be physically separate, the parts shown as unit can be or also may be used
Not to be physical location, i.e. may be located at a place, or multiple NE can also be distributed to
On.Some or all of module therein can be selected according to the actual needs to realize the present embodiment scheme
Purpose.Those of ordinary skill in the art, in the case of not paying creative work, are i.e. appreciated that also
Implement.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not
Being confined to this, any those familiar with the art, can in the technical scope that the invention discloses
The change readily occurred in or replacement, all should contain within protection scope of the present invention.Therefore, the present invention
Protection domain should be as the criterion with scope of the claims.
Claims (9)
1. the electric discharge device of electricity more than the high voltage component of an electric automobile, it is characterised in that including: often electricity
Switching circuit, high-voltage relay control circuit and high voltage discharge circuit；
Described normal electrical switching circuit, is used for including the first light coupling relay, is at described electric automobile
During high pressure power-down state, receive the low-voltage power supply voltage of outside input, described first light coupling relay defeated
Go out end and described low-voltage power supply voltage is transferred to described high-voltage relay control circuit；
Described high-voltage relay control circuit, for including the second light coupling relay and the control that interconnect
Device processed, when described electric automobile electricity condition under high pressure, the setting voltage of described controller output passes
Being defeated by the input of described second light coupling relay, the outfan of described second light coupling relay is by described low
Pressure supply voltage is transferred to described high voltage discharge circuit；
Described high voltage discharge circuit, is used for including conductive discharge network, the high pressure of this conductive discharge network
Discharge end junction point selects on the high pressure both positive and negative polarity bus in high voltage control box, when described conductive discharge net
After network receives described low-voltage power supply voltage, described conductive discharge network is to the height in described high voltage control box
Remaining electricity between positive pressure negative electrode bus carries out discharge process.
The electric discharge device of electricity, its feature more than the high voltage component of electric automobile the most according to claim 1
Being, described device is arranged in the high voltage control box of electric automobile, the high pressure of described conductive discharge network
Discharge end junction point includes cathode voltage collection point and cathode voltage collection point, described cathode voltage collection point
Being connected by the high-voltage positive electrode bus of high voltage control box and the positive pole of power accumulator, described cathode voltage is adopted
Collection point is connected by the negative pole positive electrode bus of high voltage control box and the negative pole of power accumulator.
The electric discharge device of electricity, its feature more than the high voltage component of electric automobile the most according to claim 1
Being, described device also includes: condition indication circuit, and this condition indication circuit includes being connected in series with each other
LED 1 and current-limiting resistance R5, described current-limiting resistance R5 and described first light coupling relay
Outfan connects, when the outfan of described first light coupling relay exports low-voltage power supply voltage, and described
Optical diode LED1 lights.
The electric discharge device of electricity, its feature more than the high voltage component of electric automobile the most according to claim 1
Being, described device also includes: low-voltage power supply circuit, and described low-voltage power supply circuit includes: start point
Ignition circuit and charging wake-up circuit, described starting ignition circuit and described charging wake-up circuit are connected in parallel
, described charging wake-up circuit and described starting ignition circuit concatenate anti-reverse diode D1 and D2 respectively,
The cathode terminal of described anti-reverse diode D1 and D2 is in parallel, at described anti-reverse diode D1 and D2 parallel connection again
Concatenate a current-limiting resistance R1, sending out in the input of this current-limiting resistance R1 and described first light coupling relay
Optical diode connects；
When described electric automobile is in charged state, described charging wake-up circuit works；When described electronic
When automobile is in power-up state, described starting ignition circuit works；When described electric automobile is in lower electricity shape
During state, transmit low-voltage power supply electricity by often electricity power supply circuits to the outfan of described first light coupling relay
Pressure.
The electric discharge device of electricity, its feature more than the high voltage component of electric automobile the most according to claim 4
Being, described first light coupling relay is closed type photocoupling relay, when described electric automobile is in
When charged state or power-up state, the light emitting diode in the input of described first light coupling relay is led
Logical, the outfan of described first light coupling relay disconnects；When described electric automobile is in power-down state,
The outfan Guan Bi of described first light coupling relay, the outfan of described first light coupling relay is by described low
Pressure supply voltage is transferred to described high-voltage relay control circuit.
6. according to the electric discharge dress of electricity more than the high voltage component of the electric automobile described in any one of claim 1 to 5
Put, it is characterised in that described high-voltage relay control circuit also includes dc voltage changer, described
Dc voltage changer and described controller, the outfan of described first light coupling relay connect, and described the
Two light coupling relay are open type light coupling relay, the outfan of described first light coupling relay and described
The positive pole of the diode in the input of two light coupling relay connects, the I/O output port of described controller and
The negative pole of the diode in the input of described second light coupling relay connects；
When described electric automobile is in power-down state, described dc voltage changer is by described low-voltage power supply
After voltage is converted to low-voltage dc voltage, it is transferred to described controller, the I/O output port of described controller
The light emitting diode described low-voltage dc voltage being transferred in the input of described second light coupling relay
Negative pole, the low-voltage power supply voltage of the outfan output of described first light coupling relay is transferred to described second light
The positive pole of the light emitting diode in the input of coupling relay, in the input of described second light coupling relay
LEDs ON, described second light coupling relay outfan Guan Bi, described second optocoupler relay
The low-voltage power supply voltage of the outfan output of device is transferred to described high voltage discharge circuit.
The electric discharge device of electricity, its feature more than the high voltage component of electric automobile the most according to claim 6
Being, the I/O output port of described controller, after the output low-voltage dc voltage setting time, exports high pressure
DC voltage gives the negative pole of light emitting diode in the input of described second light coupling relay, and described second
Light emitting diode in the input of light coupling relay disconnects, and the outfan of described second light coupling relay breaks
Open.
The electric discharge device of electricity, its feature more than the high voltage component of electric automobile the most according to claim 6
Being, described high voltage discharge circuit also includes relay switch, and this relay switch and described resistance are put
Electric network, the outfan of described second light coupling relay connect；
When the outfan of described second light coupling relay outputs low-voltage power supply voltage, described electrion
Relay switch Guan Bi in circuit, described conductive discharge network work.
The electric discharge device of electricity, its feature more than the high voltage component of electric automobile the most according to claim 8
Being, described conductive discharge network includes that resistance R4 and R5 being connected in parallel, described resistance R4 and R5 are respectively
Concatenation high-voltage insurance Fu2 and Fu3, when short trouble occurs in described resistance R4 and/or R5, disconnects described electricity
The electrical connection of resistance discharge network.
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| CN105655974B (en) * | 2016-02-25 | 2018-02-13 | 安徽江淮汽车集团股份有限公司 | A kind of electric vehicle motor controller, which is uncapped, protects control method |
| CN105799516A (en) * | 2016-03-22 | 2016-07-27 | 北京新能源汽车股份有限公司 | High-voltage control box with high-voltage residual electricity discharging function and electric vehicle |
| CN108319162A (en) * | 2017-12-22 | 2018-07-24 | 贵州电网有限责任公司 | The method for realizing different direct voltage source lotus controls using photoelectrical coupler |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102673424A (en) * | 2012-06-13 | 2012-09-19 | 苏州汇川技术有限公司 | Weak-current power supply system for power control unit (PCU) of electric automobile |
| CN104139708A (en) * | 2013-05-11 | 2014-11-12 | 袭帅 | Power control power supply system for electric vehicle |
| CN204586540U (en) * | 2015-02-16 | 2015-08-26 | 北京新能源汽车股份有限公司 | The electric discharge device of the remaining electricity of high voltage component of electronlmobil |
Family Cites Families (2)
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| JP5228324B2 (en) * | 2007-01-17 | 2013-07-03 | 日産自動車株式会社 | Electric vehicle |
| JP2013062979A (en) * | 2011-09-14 | 2013-04-04 | Mitsubishi Electric Corp | Power supply device for vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102673424A (en) * | 2012-06-13 | 2012-09-19 | 苏州汇川技术有限公司 | Weak-current power supply system for power control unit (PCU) of electric automobile |
| CN104139708A (en) * | 2013-05-11 | 2014-11-12 | 袭帅 | Power control power supply system for electric vehicle |
| CN204586540U (en) * | 2015-02-16 | 2015-08-26 | 北京新能源汽车股份有限公司 | The electric discharge device of the remaining electricity of high voltage component of electronlmobil |
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