CN105099085B - The electromagnetic-field-shielded system of electric vehicle motor controller - Google Patents
The electromagnetic-field-shielded system of electric vehicle motor controller Download PDFInfo
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- CN105099085B CN105099085B CN201410232824.1A CN201410232824A CN105099085B CN 105099085 B CN105099085 B CN 105099085B CN 201410232824 A CN201410232824 A CN 201410232824A CN 105099085 B CN105099085 B CN 105099085B
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- busbar
- cooling water
- outer shield
- water tank
- shield body
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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
- Y02T10/64—Electric machine technologies in electromobility
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Abstract
A kind of electromagnetic-field-shielded system of electric vehicle motor controller, multiple power source surge protectors and signal wire are installed inside outer layer shield, control line protector, reach unloading and absorbs external strong electrical field on electric vehicle motor controller outer shield body, on power supply line, on signal wire, with the electric current induced on cooling water tank, make electric vehicle motor controller internal electronic device not and will receive the destruction of external strong-electromagnetic field, reach the requirement that protection electric car is travelled by design requirement safety high speed, cooling water temperature system can make electric car operation electric vehicle motor controller under lasting climbing or heavy load temperature-resistant.The above technology makes electric car have the portion of techniques basis that can be widelyd popularize, and electric car can replace existing using gasoline and diesel oil as fuel automobile after wideling popularize, administer environmental pollution at all.
Description
Technical field
The present invention relates to technical field of motors, in particular to one kind prevents electric vehicle motor controller by extraneous forceful electric power
The electromagnetic-field-shielded system of the electric vehicle motor controller of magnetic interference.
Background technique
1. electric machine controller is that the alternating current electricity consumption for the powered by direct current and motor for realizing battery becomes in electric car
The critical component for changing, realizing the driving operation of motor, belongs to the core power component of electric car, it allows for continuing reliable
Operation, existing electric machine controller is many kinds of, but arragement construction is similar, reliability and durability verifying in deposit one
A little problems, such as drive module poor heat radiation influence IGBT (Insulated Gate Bipolar Transistor, insulated gate
Bipolar junction transistor) service life and system whole efficiency；Controller integral sealing is not in place, work long hours under adverse circumstances or
More or rare drainage；Fail to be isolated very well between control panel and driving plate, Electro Magnetic Compatibility is poor.Especially severe is existing
The outside of electric vehicle motor controller there was only one layer of very thick metal shell, after extraneous strong-electromagnetic field interference,
Electromagnetic field moment on metal shell reaches magnetic saturation, and moment just attacks motor in electric automobile control after electromagnetic field breaks through metal shell
Key electronic device in device integrated circuit processed, makes electric machine controller cisco unity malfunction, loses driving motor for electric automobile
Control generates traffic accident.
2. three aspects of Spark gap
2.1. shield: shielding is to stop or reduce the transmission of electromagnetic energy using shield, reaches one kind of electromagnetic protection
Important means, this shield do not allow electromagnetic field to reach protected equipment.
2.2. be grounded: grounding is to connect electronic equipment with the earth by method appropriate and approach, to improve electricity
The stability of sub- circuitry system work, effectively inhibits the influence of external electromagnetic field, avoids casing excessive because of charge accumulated
Interference caused by guiding discharge and damage.
2.3. filter: filter can form selectivity net by resistance, inductance, a kind of passive or active device of capacitor
Network completes filter action to prevent remaining ingredient except useful band from passing through, can also be by ferrite one kind lossy material
Composition, sponges undesirable frequency content by it, has the function that filtering.(bibliography: " electromagnetic pulse is former by Sun Yongjun
Reason and its protection " " space electronic technology " the 3rd phase in 2004)
3. international state-of-the-art power source surge protector (SPD)；Signal wire, control line protector (SPD) technology introduction:
Existing (hereinafter referred to as S series of products) series of power Surge Protector (SPD)；Signal wire, control line protector (SPD) produce
Product are world-leading electric power purification, precision instrument protection, power surge filtering protection product.Its sine wave tracking filter and
The patented technology of special chemical encapsulation, includes surge protection and filtering technique, meets very much the technical requirements of Spark gap.
S series surge filtering product has the advantage that
3.1. multistage protection mechanism, residual voltage is up to 0V.By the surge voltage of water conservancy diversion generally between 2.5KV~15KV,
Provisioned SPD product should reach extremely low residual voltage after multistage protection, and special industry can reach 0 volt.Market is general
Surge protection product, maximum through-flow 40KA, national standard residual voltage value are 1800.S product 40KA impact, residual voltage value are less than 600V.Residual voltage
Smaller, protecting effect is better.Under 8/20us simulation thunder and lightning test environment, charging voltage 24.9KV, current peak 47.8KA are residual
Pressure value 551V is far below home products residual voltage value.
3.2. response speed is less than 1 nanosecond, the secondary thunder of effective protection, inductive lightning and electrical internal transient voltage suppression of shoving
Device (abbreviation TVS) processed.The TVS diode response time is less than 1 nanosecond.The varistor that other surge protection products use responds speed
Degree was 25 nanoseconds.TVS advantage is: bidirectional protective characteristic, reflection speed fast (nanosecond order) absorb the big (transient state of surge power
Power reaches thousands of watts), clamping voltag is easy to control, leakage current is low, without damage limit, small in size.
3.3. shell uses 4 standard of NEMA, waterproof, fire prevention, explosion-proof, antistatic.
3.4. the sine wave ORN tracking technique of patent accurately eliminates surge, harmonic wave function.Traditional product is using tradition
The filtering of upper and lower tongs formula threshold values, pressure-sensitive characteristic is connected over the ground when voltage reaches threshold values, to reach the mesh of leakage current
's.S product uses the enhanced ORN sine wave tracking filter of patented technology, by certain positive and negative excursion percentage of sine wave, tracking
Surge " stolen goods electricity " is eliminated, purifies power utilization environment, and residual voltage value is very low.In computer communication system, electronic equipment, electromagnetism arteries and veins
Punching is coupled in circuit by conducting wire, is interfered in the energy conduction to equipment of product over-voltage in the line, is damaged equipment.It leads
Energy shows as over-voltage when line couples.ORN filtering technique is filtered by tracking technique and resists range, guarantees power supply, signal
" cleaning " makes computer system, electronic equipment etc. avoid the interference and damage of electromagnetic pulse.
3.5. unique chemistry encapsulation patented technology, the lasting unfailing performance of guarantee device, the voltage tester of 500V,
Without the MOV of chemical packaging protection, 48 seconds temperature rise to 200 DEG C, and lasting test can make MOV explode in a short time.
And after special chemical encapsulates, the voltage tester of 500V, by the MOV of chemical packaging protection, 3 points of 30 seconds temperature are maintained at
105 DEG C, and be always maintained in this temperature.And special chemistry closing, the heat generated during surge can be absorbed rapidly, protected
Product component is protected, device service life is extended.During EMP Coupling, energy is very big, to the electronics of filter apparatus
Element device requires also very high.And the special chemical closing of S product, energy is shifted by distributing heat, ensure that component
Service life, to protect system safe.
3.6. real 10 mould (full mould) protection blocks all possible channels of surge.It is carried out between equipment requirement line and line
Filtering protection.The full mould protection of S product hinders disconnected and line, all possible channel of line and ground, to play perfectly to equipment
Protective effect
3.7. diversification module, heat, electric dual fail-safe fusing capacitor design are mixed.
3.8. uniquely can earth-free surge protection product, using the sine wave tracking technique of patent, special chemical encapsulation,
And nanosecond TVS element, the protection of ten moulds and mixing diversification module, S product is not released energy by ground connection.
Since full mould is protected, totally 70 MOV, the energy ratio that every MOV shares are less.When outside is not grounded, MOV is absorbing surge
When, the energy of surge can be discharged by the fever of itself.By special chemistry encapsulation, MOV generation can be absorbed rapidly
Heat protects MOV component.So that product can carry out energy release in unearthed situation.S product cannot be grounded
When, it is desirable that ground wire does equipotential link.In mobile device in military communication system, since mobile property determines equipment
Earthed system will be perfect not to the utmost.And traditional surge filters product, requires the ground connection of high request.S product can be earth-free
In the case where accomplish surge filtering protection.(bibliography: u s company's " series of products specification ")
4. the type of electromagnetic shielding
4.1. frequency electromagnetic waves shield, main to encounter metal shield using absorption and principle of reflection, frequency electromagnetic waves
When, it generates strong eddy current effect and is absorbed electromagnetic wave, simultaneously because its wave impedance is very high, frequency electromagnetic waves generate reflection
Loss.
4.2. shielding in of magnetostatic field, when magnetic field passes through the high magnetic conduction shield of a closure, since the magnetic permeability of shield is very high,
Magnetic resistance is very low, and magnetic field can be exported by magnetic screen access, and the magnetic field for leaking into shield is greatly decreased.
4.3. SLF electromagnetic shields, and mainly based on magnetic shielding principle, while to consider electromagnetic compatibility, have part
The shielding action that eddy current effect generates.
5. the selection of the principle and shield manufacture material of electromagnetic shielding
5.1. low frequency electromagnetic Bobbi frequency electromagnetic waves have higher magnetic-field component, for low-down interfering frequency, shielding
It is even more important when the magnetic permeability of material is more than high frequency.The basic principle for shielding low frequency (such as power frequency) electromagnetic interference is by magnetic path parallel connection
Road shunts.Magnetic flux density inside shield is reduced by using the bypass of permeability magnetic material (such as mild steel, silicon steel) offer magnetic,
Increase eddy-current loss as far as possible simultaneously, so that part energy is converted into thermal energy consumption and fall.The more thick then magnetic resistance of shielding material is smaller, is vortexed
Loss is bigger, and shield effectiveness is better.Conductivity is high and material (such as copper, aluminium) that magnetic permeability is low is several to the magnetic-field component of electromagnetic wave
There is no shielding action.
5.2. magnetic conductivity is also related with applied field strengths.When applied field strengths are lower, magnetic conductivity is with externally-applied magnetic field
Increase and increase, when applied field strengths be more than certain value when, magnetic conductivity sharply declines, and at this time material is saturated,
Material is once saturated, and just loses magnetic screening action.The magnetic conductivity of material is higher, is more easily saturated.Therefore, very strong
In magnetic field, there is no good shield effectiveness for the very high material of magnetic conductivity.The magnetic conductivity of mild steel is 4000 or so, saturation intensity
22000 or so, it is low frequency electromagnetic shielding material that low carbon steel plate good mechanical property, solderability are good, easy processing, are not easy to be saturated
It is preferred.
6. in place of the deficiencies in the prior art
6.1. the shield being closed, it has the characteristics that structure is simple, easily manufactured, low in cost, common ultralow frequency
Electromagnetic screen is formed using single layer Alperm, is disadvantageous in that: (1), screening factor it is low, generally 20~
30dB；(2), it cannot be compatible with the shielding of high-intensity magnetic field and low-intensity magnetic field simultaneously；(3), shielded layer is exposed to outer, is easy impacted, touched
It hits and leads to the reduction of shield effectiveness, when Alperm is impacted, magnetic conductivity can decline.Therefore, this single layer structure
Super low frequency electromagnet shielding device, be only applicable to the lower place of shielding requirements (electromagnetic shielding coefficient in 20~30dB；Electromagnetic screen
Cover that coefficient is higher, the shielding requirements of instrument and equipment are tighter), and (electromagnetic shielding coefficient is 75 in place higher for shielding requirements
~90dB), even if shield thickeies, ideal effect is also not achieved in shielding.
6.2. often simple using shielding in three (shielding, ground connection, filtering) major measures of tempest, but
Complete Spark gap cannot be provided, because the cable in equipment or system is that most effective electromagnetic pulse receives and emits
Antenna.Especially for the system that the equipment and multiple devices that have external antenna are connected to form by cable, simple shielding nothing
Method reaches corresponding requirement of shelter.A kind of effective measures are exactly plus filter, cutting electromagnetic pulse are passed along signal wire or power supply line
The path broadcast collectively forms perfect Spark gap with shielding.Filtering be in order to prevent undesirable electromagnetic viscosimeter along with
The connected any aerial lug of equipment travels to equipment, is generally completed by filter.It is electromagnetic pulse using filter inhibition
One of necessary means of protection are especially coupled to the energy in circuit through conducting wire to inhibition, it is a kind of adopted extensively
Method.
6.3. existing single-layer or multi-layer electromagnetic screen in outer layer shield surface, multilayer screen body between outer layer,
In internal layer shield, it is fitted without power source surge protector (SPD) and signal wire, control line protector (SPD), earth lead
In be fitted without power source surge protector (SPD).The strong electrical field and high-intensity magnetic field that electromagnetic pulse generates, can be in power line cables, letter
On number line cable and earth lead, several kilovolts of electric currents for being up to tens of thousands of amperes to the voltage of tens of thousands of volts and a few kiloamperes are induced, it is electric
Stream enters in shield along power line cables, signal line cable and earth lead, destroys or paralysis internal layer shields interior protected
Computer.
Summary of the invention
In order to overcome the outer layer protection shell of existing electric vehicle motor controller to be easy to be reached by after strong-electromagnetic field attack
To magnetic saturation, after penetration by electromagnetic fields shell, the integrated circuit of electric vehicle motor controller internal electronic component composition is destroyed,
Make the disadvantage that electric car is out of hand.The present invention provides a kind of electromagnetic-field-shielded system of electric vehicle motor controller,
Multiple power source surge protectors and signal wire, control line protector are installed inside outer layer shield, reach unloading and absorption
External strong electrical field incudes on electric vehicle motor controller outer shield body, on power supply line, on signal wire and on cooling water tank
Electric current out makes remaining electric current that can not induce new formidably electromagnetic field attack electric vehicle motor controller, guarantees electricity
Electrical automobile electric machine controller internal electronic device not will receive the destruction of external strong-electromagnetic field, reach protection electric car by design
It is required that the purpose of safety high speed traveling, cooling water tank cooling system can be such that electric car transports under lasting climbing or heavy load
Row electric vehicle motor controller is temperature-resistant.
The technical solution used to solve the technical problems of the present invention is that: cooling water tank is installed in the outside of electric machine controller,
Cooling water tank water inlet and cooling water tank water outlet are mounted on the same side of cooling water tank, and cooling water is intake by cooling water tank
Mouth is flowed out after entering the cooling water tank reduction intracorporal temperature of outer shield by cooling water tank water outlet.Cooling water tank is by conductive magneto-conductive
Metal material be made, external in cooling water tank installs 1~5 layer of outer shield body.Electric machine controller fixed plate is fixed on outer
The inside of layer shield.In the inside of outer layer shield, the lower part of electric machine controller fixed plate is installed: 1~5 the first power supply wave
Surge protector, 1~5 second source Surge Protector and 1~5 signal wire, control line protector.First power surge is protected
The first connecting line on shield device is connect with the inner surface of outer shield body can unload and absorb external strong electrical field in outer shield
The electric current induced on the shell of body, the electric current for preventing external strong electrical field moment from inducing on the shell of outer layer shield reach
It is saturated and then is penetrated the shell of outer shield body, attacks electric machine controller internal integrated circuit and electronic device.First power supply wave
The outer surface of the second connecting line and cooling water tank on surge protector connects, and can unload and absorb strong electrical field along cooling water tank
The electric current into cooling water tank that water inlet and cooling water tank water outlet induce.Third on first power source surge protector connects
Wiring is connect with electric machine controller outer surface, can unload and absorb the powerful electric current generated suddenly on electric machine controller.
The first fixing port of electric machine controller and the second fixing port of electric machine controller are set in electric machine controller fixed plate, with key screw electricity
The first fixing port of machine controller and the second fixing port of electric machine controller are screwed together with electric machine controller.On outer layer shield
The first fixator of outer shield body, the second fixator of outer shield body, outer shield body third fixator and outer shield are set
The 4th fixator of body, for outer shield body to be fixed on electric car.Outer shield body and cooling water tank water tank
One fixator, the second fixator of water tank, water tank third fixator and the 4th fixator of water tank link together, on cooling water tank
Cooling water tank water inlet and cooling water tank water outlet are set.Tapping covers thread on outer shield body, leads in signal wire disengaging
Thread is covered on pipe, signal wire conducting pipes are tightened on outer shield body, and thread handle is covered on power supply line conducting pipes
Power supply line conducting pipes are tightened on outer shield body.Second signal line passes through signal wire conducting pipes and enters in outer shield body
Portion is connect with signal wire, control line protector, the first signal wire and electric machine controller on signal wire, control line protector
Signal connector connection.Second source line passes through power supply line conducting pipes and enters outer shield body inside and second source surge
Protector connects, and the first power supply line on second source Surge Protector is connected with the three-phase connector of electric machine controller or two
Device connection.Signal wire conducting pipes and power supply line conducting pipes must be made of the metals of conductive magneto-conductive, curved in 90 ° or curved
It is spiral, to prevent external electromagnetic field from entering outer shield along the mouth of signal wire conducting pipes and power supply line conducting pipes
Internal portion.
With outer shield body fixed screw outer shield body first interface, the outer shield body second on outer shield body
Interface, outer shield body third interface, the first joint portion of outer shield body on the 4th interface of outer shield body and outer shield
The second joint portion of body is fixed together.
Become one by box body by each functional component of electric machine controller is compact in electric machine controller, box body
It is provided with cuboid, in order to be installed on electric car, for the convenience for improving each component dismounting of tray interior, box body includes
Box body and box cover, box body are the cuboid with opening, and box cover is fastened in box body.Three are fixed in box portion outside to be connected
It is female to be fixed with IGBT module, driving plate, control panel, baffle, AC in tray interior for device, two-phase connector and signal connector
Row, DC busbar and capacitor.In box portion outside: three-phase connector, two-phase connector 2 and signal connector 3 are mounted on the same of box body
In one side wall, three-phase connector, two-phase connector and signal connector are integrated on box body, is located on same side wall, is convenient for
It is electrically connected with each functional component of tray interior.Panel peace is respectively adopted in three-phase connector, two-phase connector and signal connector
Dress formula connector, that is, be mounted directly on the side wall of box body, in tray interior: IGBT module is mounted on the bottom plate of box body
On；The top of IGBT module is disposed with driving plate, control panel and baffle from bottom to top；The opposite two sides of IGBT module
It is respectively arranged with AC busbar and DC busbar, AC busbar is provided with capacitor between three-phase connector, DC busbar and wall box.
Tray interior is further fixed on barricade, and barricade is arranged between control panel and driving plate.Barricade can prevent on control panel
The analog signal of conduction over long distances is disturbed, and after preventing control panel from matching with driving plate it is affected by vibration larger, by setting
Barricade is set, the bonding strength between control panel and driving plate is on the one hand ensure that, control panel is enable to verify by vibration-testing,
On the other hand it can be realized to the high-voltage power side i.e. interference shielding of three-phase connector side, improve the analog signal on control panel
Quality.Between AC busbar and box side wall and between DC busbar box side wall adjacent thereto, it is respectively fixed with heat conductive insulating
Pad.Heat conductive insulating pad is made of the higher isolation material of thermal coefficient, will be on busbar to realize being to insulate and thermally conductive effect
Heat can shed in time, guarantee the circulation of electric current, and realize that AC busbar and DC busbar can be closely adjacent in box body
On corresponding side wall.Driving plate is welded in IGBT module by pad mode.Driving plate does not need special anti-vibration support
Plate.AC busbar is connected with three-phase connector by zinc-plated outer-hexagonal flange bolt.Outer-hexagonal flange bolt and AC busbar
Contact area is big, and in tightening operation, under same torque, pressure is relatively small, and effectively prevent busbar is caused due to deformation
The phenomenon that busbar section becomes smaller also reduces the contact resistance between AC busbar and three-phase connector；Outer-hexagonal flange bolt
Zinc-plated scheme can play the role of shunting, in other words, when institute's AC busbar is connected with three-phase connector, one part of current meeting
AC busbar and three-phase connector are flowed by outer-hexagonal flange bolt, the turn-on effect of electric current is improved, using zinc-plated outer six
Angle flange bolt, the temperature compared with the junction of common bolt connection AC busbar and three-phase connector decrease, therefore,
Using the outer-hexagonal flange bolt of zinc-plated processing, on the basis of playing shunting function.Between control panel and driving plate, and control
Between making sheet and signal connector, it is connected respectively by corresponding pinboard, pinboard is the plate with certain bending angle
Structure, the shape of the hardened structure can flexible setting, with for connecting control panel and driving plate, and for connecting control panel and letter
Number connector, control panel and signal connector it is separated not connected, be electrically connected indeed through pinboard.DC busbar uses
Stack-design, the anode of DC busbar is parallel with negative terminal to be superimposed, for reducing the stray inductance in DC path, anode and
Isolation electrically is realized using insulating paper between negative terminal, prevents short circuit.Capacitor, i.e. DC support capacitor, using outer busbar shape
Formula, DC busbar is set as outside capacitor, rather than is integrated in inside capacitor, and the connection terminal of capacitor and IGBT module is direct
Connection, the cooling water channel side of IGBT module, be conducive to generate the connection terminal of capacitor is thermally conducted to cooling water, improves and dissipates
Thermal effect.In terms of circuit layout, baffle is connected on circuit with DC busbar.The connecting pin of capacitor and a connection of DC busbar
Hold it is top-down be connected in IGBT module, another connecting pin of DC busbar passes through flange bolt and two-phase connector phase
Connection forms dc power and inputs path.It is fixed with current sensor in driving plate, is fitted with copper post in current sensor；AC
One end of busbar is bolted in copper post, and the other end is connected by flange bolt with three-phase connector, is formed and is handed over
Flow power output path.Corresponding to three-phase connector, copper post is set as three, three copper posts on the basis of realizing electrical connection,
It is more compact to can be realized the connection of controller corresponding function component.Three copper posts are arranged side by side, by AC busbar, driving plate and IGBT
Module, which runs through and fixes, to be overlapped together, and is then tightened with bolt, i.e., copper post is axially disposed threaded hole, for installing spiral shell
Bolt, realizes the compactness of the functional component assembling structure of tray interior accordingly, and entire DC bus path is made to contract significantly
It is short, the stray inductance in DC path is greatly reduced, thus the spike electricity during reducing IGBT module on/off
Pressure/electric current, improve IGBT module uses secure threshold, improves power density, is connected by the structure of copper post, reduces control
Body product processed.Box body is processed using the material of monolithic conductive magnetic conduction, the design of the electric components such as DC busbar, AC busbar, copper post,
In the case where guaranteeing current capacity, the thickness of DC busbar and AC busbar is set as 3mm or so, and copper post is hollow structure.
The beneficial effects of the present invention are: installing multiple power source surge protectors and signal wire, control inside outer layer shield
Line protector processed reaches unloading and absorbs external strong electrical field on electric vehicle motor controller outer shield body, power supply line
Above, the electric current induced on signal wire and on cooling water tank, will receive electric vehicle motor controller internal electronic device not
The destruction of external strong-electromagnetic field reaches the requirement that protection electric car is travelled by design requirement safety high speed, cooling water temperature system
System can make electric car operation electric vehicle motor controller under lasting climbing or heavy load temperature-resistant.Motor control
Device is protected, and is not in situation out of hand, is used electric car according to design requirement, can be widelyd popularize electronic
Automobile.
Detailed description of the invention
Fig. 1 is schematic cross-sectional view of the invention；
Fig. 2 is top view of the invention；
Fig. 3 is connecting portion sectional view of the present invention；
Fig. 4 is schematic diagram of internal structure of the invention；
Fig. 5 is schematic diagram of internal structure of the invention；
Fig. 6 is perspective view of the explosion of the invention.
Specific embodiment
In fig. 1 and 2, cooling water tank 21 is installed in the outside of electric machine controller 22, in the outside of electric machine controller 22
Cooling water tank 21 is installed, cooling water tank water inlet 36 and cooling water tank water outlet 41 are mounted on the same side of cooling water tank 21,
Cooling liquid is entered after the temperature in the reduction outer shield body 19 of cooling water tank 21 by cooling water tank water inlet 36 by cooling water
Case water outlet 41 flows out.External in cooling water tank 21 installs 1 layer of outer shield body 19.Electric machine controller fixed plate 43 is mounted on
The inside of outer shield body 19.In the inside of outer layer shield 19, the lower part of electric machine controller fixed plate 43 is installed: 1 first
30,1 second source Surge Protector 31 and 1 signal wires of power source surge protector, control line protector 32.First power supply
The first connecting line 44 on Surge Protector 30 is connect with the inner surface of outer shield body 19；On first power source surge protector 30
The second connecting line 45 connect with the outer surface of cooling water tank 21.Third connecting line 46 on first power source surge protector 30 with
The connection of 22 outer surface of electric machine controller.The first fixing port of electric machine controller 26 and motor are set in electric machine controller fixed plate 43
The second fixing port of controller 42, with the first fixing port of key screw electric machine controller 26 and the second fixing port of electric machine controller 42 and electricity
Machine controller 22 is screwed together.The first fixator of outer shield body 18, outer shield body the are set on outer layer shield 19
Two fixators 24, outer shield body third fixator 28 and the 4th fixator 34 of outer shield body, for outer shield body 19
It is fixed on electric car.Outer shield body 19 and the first fixator of water tank 20 of cooling water tank 21, the second fixator of water tank
23, water tank third fixator 29 and the 4th fixator 33 of water tank link together.On cooling water tank 21 be arranged cooling water tank into
The mouth of a river 36 and cooling water tank water outlet 41.Tapping covers thread on outer shield body 19, covers on signal wire conducting pipes 37
Thread is tightened in signal wire conducting pipes 37 on outer shield body 19；Thread handle is covered on power supply line conducting pipes 39
Power supply line conducting pipes 39 are tightened on outer shield body 19.Second signal line 38 passes through signal wire conducting pipes 37 and enters outer layer
19 inside of shield is connect with signal wire, control line protector 32, the first signal on signal wire, control line protector 32
Line 15 is connect with the signal connector 3 of electric machine controller 22.Second source line 40 passes through power supply line conducting pipes 39 and enters outer layer
The inside of shield 19 is connect with second source Surge Protector 31, the first power supply line 17 on second source Surge Protector 31 and
The three-phase connector 1 or two-phase connector 2 of electric machine controller 22 connect.Signal wire conducting pipes 37 and power supply line conducting pipes 39
Must be made of the metal of conductive magneto-conductive, curved in 90 ° or curve helical form, with prevent external electromagnetic field along signal wire into
The mouth of conduit 37 and power supply line conducting pipes 39 enters inside outer shield body 19 out.
In Fig. 3, with outer shield body fixed screw 47 on outer shield body 19 outer shield body first interface 15,
Outer shield body second interface 25, outer shield body third interface 27, the outer shield body on the 4th interface 35 of outer shield body
First joint portion 48 and the second joint portion of outer shield body 49 are fixed together.
In Fig. 4, Fig. 5 and Fig. 6, pass through each functional structure of the box body 50 by electric machine controller 22 in electric machine controller 22
Part is compact to become one, and box body 50 is provided with cuboid, in order to be installed on electric car, to improve inside box body 50
The convenience of each component dismounting, box body 50 include box body 51 and box cover 52, and box body 51 is the cuboid with opening, and box cover 52 is detained
It closes in box body 51.Three-phase connector 1, two-phase connector 2 and signal connector 3 are fixed with outside box body 50, in box body
Portion is fixed with IGBT module 4, driving plate 5, control panel 6, baffle 7, AC busbar 8, DC busbar 9 and capacitor 10.Outside box body 50
Portion: three-phase connector 1, two-phase connector 2 and signal connector 3 are mounted on the same side wall of box body 50, by three-phase connector
1, two-phase connector 2 and signal connector 3 are integrated on box body 50, are located on same side wall, are convenient for and the 50 each function in inside of box body
It can the electrical connection of property component.Panel installed connector is respectively adopted in three-phase connector 1, two-phase connector 2 and signal connector 3,
It is mounted directly on the side wall of box body 50, inside box body 50: IGBT module 4 is mounted on the bottom plate of box body 50；IGBT
The top of module 4 is disposed with driving plate 5, control panel 6 and baffle 7 from bottom to top；The opposite two sides of IGBT module 4 point
It is not provided with AC busbar 8 and DC busbar 9, AC busbar 8 is provided with electricity between three-phase connector 1, DC busbar 9 and wall box
Hold 10.Barricade 11 is further fixed on inside box body 50, barricade 11 is arranged between control panel 6 and driving plate 5.11 energy of barricade
Enough prevent the analog signal conducted over long distances on control panel 6 to be disturbed, and after preventing control panel 6 from matching with driving plate 5 it is vibrated
It is dynamic to be affected, by the way that barricade 11 is arranged, it on the one hand ensure that the bonding strength between control panel 6 and driving plate 5, make to control
Plate 6 can be verified by vibration-testing, on the other hand can be realized to the high-voltage power side i.e. interference shielding of three-phase connector side,
Improve the analog signal quality on control panel 6.Between 50 side wall of AC busbar 8 and box body and the box body adjacent thereto of DC busbar 9
Between 50 side walls, it is respectively fixed with heat conductive insulating pad.Heat conductive insulating pad preferably uses the higher isolation material of thermal coefficient to be made,
To realize being insulation and thermally conductive effect, the heat on busbar can be shed in time, guarantee the circulation of electric current, and realize AC
Busbar 8 and DC busbar 9 can be closely adjacent on the corresponding side wall of box body 50.Driving plate 5 is welded on by pad mode
In IGBT module 4.Driving plate 5 does not need special anti-vibration support plate.AC busbar 8 and three-phase connector 1 pass through zinc-plated outer
Hexagon flange bolt 12 is connected.The contact area of outer-hexagonal flange bolt 12 and AC busbar 8 is big, identical in tightening operation
Under torque, pressure is relatively small, effectively prevents the phenomenon that busbar causes busbar section to become smaller due to deformation, also reduces AC
Contact resistance between busbar 8 and three-phase connector 1；The zinc-plated scheme of outer-hexagonal flange bolt 12, can play the work of shunting
With in other words, when institute's AC busbar 8 and three-phase connector 1 are connected, one part of current can be flowed by outer-hexagonal flange bolt 12
AC busbar 8 and three-phase connector 1, improve the turn-on effect of electric current, using zinc-plated outer-hexagonal flange bolt 12, compared with common
Bolt connection AC busbar 8 and the temperature of the junction of three-phase connector 1 decrease, therefore, using outer the six of zinc-plated processing
Angle flange bolt 12, on the basis of playing shunting function.Between control panel 6 and driving plate 5 and control panel 6 connects with signal
It connects between device 3, is connected respectively by corresponding pinboard 13, pinboard 13 is the hardened structure with certain bending angle, should
The shape of hardened structure can flexible setting, with for connecting control panel 6 and driving plate 5, and for connecting control panel 6 and signal company
Device 3 is connect, control panel 6 and the separated of signal connector 3 are not connected with, are electrically connected indeed through pinboard 13.DC busbar 9 is adopted
With stack-design, the anode of DC busbar 9 is parallel with negative terminal to be superimposed, for reducing the stray inductance in DC path, just
Isolation electrically is realized using insulating paper between end and negative terminal, prevents short circuit.Capacitor 10, i.e. DC support capacitor 10 use
Outer busbar form, DC busbar 9 are set as outside capacitor 10, rather than are integrated in inside capacitor 10, and by the connecting pin of capacitor 10
Son is directly connected to IGBT module 4, the but water of IGBT module 4, raising heat dissipation effect.In terms of circuit layout, baffle 7 and DC are female
Row 9 is connected on circuit.The connecting pin of a capacitor 10 and connecting pin of DC busbar 9 is top-down is connected to IGBT module
On 4, another connecting pin of DC busbar 9 is connected by flange bolt with two-phase connector 2, is formed dc power and is inputted path.
It is fixed with current sensor in driving plate 5, copper post 14 is fitted in current sensor；One end of AC busbar 8 is bolted
In copper post 14, the other end is connected by flange bolt with three-phase connector 1, forms AC power outgoing route.It is corresponding
In three-phase connector 1, copper post 14 is set as three, and three copper posts 14 can be realized controller on the basis of realizing electrical connection
The connection of corresponding function component is more compact.Three copper posts 14 are arranged side by side, and AC busbar 8, driving plate 5 and IGBT module 4 are run through
And fixation overlaps together, and is then tightened with bolt, i.e., copper post 14 is axially disposed threaded hole, for installing bolt, accordingly
The compactness of the functional component assembling structure inside box body 50 is realized, and greatly shortens entire DC bus path, pole
The earth reduces the stray inductance in DC path, thus the peak voltage during reducing 4 on/off of IGBT module/
Electric current, improve IGBT module 4 uses secure threshold, improves power density, is connected by the structure of copper post 14, reduces control
Body product processed.Box body 50 is processed using the material of monolithic conductive magnetic conduction, the electric components such as DC busbar 9, AC busbar 8, copper post 14
Design, in the case where guaranteeing current capacity, the thickness of DC busbar 9 and AC busbar 8 is set as 3mm or so, and copper post 14 is sky
Core structure.
Claims (2)
1. the electromagnetic-field-shielded system of a kind of electric vehicle motor controller, it is characterized in that: signal wire conducting pipes (37), power supply
The interior table of the first connecting line (44) and outer shield body (19) on line conducting pipes (39), the first power source surge protector (30)
Face connects, and the second connecting line (45) on the first power source surge protector (30) is connect with the outer surface of cooling water tank (21), the
Binary signal line (38) is connect with signal wire, control line protector (32), first on signal wire, control line protector (32)
Signal wire (15) is connect with the signal connector (3) of electric machine controller (22), and second source line (40) and second source surge are protected
Device (31) connection is protected, the first power supply line (17) on second source Surge Protector (31) is connected with the three of electric machine controller (22)
Device 1 or two-phase connector (2) connection are connect, the above connection relies on outer shield body (19) to constitute a shielding external electromagnetic field
Shield, the electric vehicle motor controller (22) for protecting outer shield body (19) internal, in the outer of electric machine controller (22)
Cooling water tank (21) are installed in face, and cooling water tank water inlet (36) and cooling water tank water outlet (41) are mounted on cooling water tank (21) together
One side, cooling water enter the temperature in cooling water tank (21) reduction outer shield body (19) by cooling water tank water inlet (36)
It is flowed out after degree by cooling water tank water outlet (41), cooling water tank (21) is made of the metal material of conductive magneto-conductive, in cooling water tank
(21) 1~5 layer of outer shield body (19) of external installation, electric machine controller fixed plate (43) are fixed on outer shield body (19)
Inside, in the inside of outer layer shield (19), the lower part of electric machine controller fixed plate (43) is installed: 1~5 the first power surge
Protector (30), 1~5 second source Surge Protector (31) and 1~5 signal wire, control line protector (32), first
The first connecting line (44) on power source surge protector (30) connect with the inner surface of outer shield body (19) and can unload and inhale
The electric current that external strong electrical field induces on the shell of outer layer shield (19) is received, prevents external strong electrical field moment in outer shield
The electric current induced on the shell of body (19) reaches saturation and then penetrates the shell of outer shield body (19), attacks electric machine controller
(22) internal integrated circuit and electronic device, the second connecting line (45) and cooling water tank on the first power source surge protector (30)
(21) outer surface connection, can unload and absorb strong electrical field along cooling water tank water inlet (36) and cooling water tank water outlet
(41) what is induced enters the electric current of cooling water tank (21), the third connecting line (46) on the first power source surge protector (30) with
The connection of electric machine controller (22) outer surface, can unload and absorb the powerful electricity generated suddenly above in electric machine controller (22)
The first fixing port of electric machine controller (26) and the second fixing port of electric machine controller is arranged in stream on electric machine controller fixed plate (43)
(42), with the first fixing port of key screw electric machine controller (26) and the second fixing port of electric machine controller (42) and electric machine controller
(22) it is screwed together, the first fixator of outer shield body (18), outer shield body second is set on outer layer shield (19)
The 4th fixator (34) of fixator (24), outer shield body third fixator (28) and outer shield body, for outer shield
Body (19) is fixed on electric car, outer shield body (19) and cooling water tank (21) the first fixator of water tank (20), water
The second fixator of case (23), water tank third fixator (29) and the 4th fixator (33) of water tank link together, in cooling water tank
(21) cooling water tank water inlet (36) and cooling water tank water outlet (41) are set on, and tapping covers screw on outer shield body (19)
Button, covers thread on signal wire conducting pipes (37), signal wire conducting pipes (37) is tightened on outer shield body (19),
It covers thread on power supply line conducting pipes (39) to be tightened on outer shield body (19) power supply line conducting pipes (39), second
Signal wire (38) passes through signal wire conducting pipes (37) and enters internal outer shield body (19) and signal wire, control line protector
(32) it connects, the signal of signal wire, the first signal wire (15) in control line protector (32) and electric machine controller (22) connects
Device (3) connection is connect, second source line (40) passes through power supply line conducting pipes (39) and enters outer shield body (19) inside and second
Power source surge protector (31) connects, the first power supply line (17) and electric machine controller on second source Surge Protector (31)
(22) three-phase connector (1) or two-phase connector (2) connection, signal wire conducting pipes (37) and power supply line conducting pipes (39)
Must be made of the metal of conductive magneto-conductive, curved in 90 ° or curve helical form, with prevent external electromagnetic field along signal wire into
The mouth of conduit (37) and power supply line conducting pipes (39) enters outer shield body (19) inside out, fixes spiral shell with outer shield body
Silk (47) is the outer shield body first interface (16) on outer shield body (19), outer shield body second interface (25), outer layer
Shield third interface (27), the first joint portion of outer shield body (48) on the 4th interface (35) of outer shield body and outer layer screen
It covers the second joint portion of body (49) to be fixed together, passes through box body (50) in electric machine controller (22) for each function of electric machine controller
Can property component is compact becomes one, box body (50) is provided with cuboid, in order to be installed on electric car, to improve box
The convenience of the internal each component dismounting of body (50), box body (50) include box body (51) and box cover (52), and box body (51) is with opening
Mouthful cuboid, box cover (52) is fastened on box body (51), and three-phase connector (1) is fixed with outside box body (50), two is connected
Device (2) and signal connector (3) are connect, is fixed with IGBT module (4), driving plate (5), control panel (6), baffle in tray interior
(7), AC busbar (8), DC busbar (9) and capacitor (10), it is external in box body (50): three-phase connector (1), two-phase connector (2)
It is mounted on signal connector (3) on the same side wall of box body (50), by three-phase connector (1), two-phase connector (2) and signal
Connector (3) is integrated on box body (50), is located on same side wall, convenient for being electrically connected with the internal each functional component of box body (50)
It connects, panel installed connector is respectively adopted in three-phase connector (1), two-phase connector (2) and signal connector (3), i.e., by it
It is mounted directly on the side wall of box body (50), internal in box body (50): IGBT module (4) is mounted on the bottom plate of box body (50)；
The top of IGBT module (4) is disposed with driving plate (5), control panel (6) and baffle (7) from bottom to top；IGBT module
(4) opposite two sides are respectively arranged with AC busbar (8) and DC busbar (9), and AC busbar (8) is neighbouring three-phase connector (1), DC busbar
(9) it is provided between wall box capacitor (10), is further fixed on barricade (11) inside box body (50), barricade (11) setting
Between control panel (6) and driving plate (5), barricade (11) can prevent the analog signal conducted over long distances on control panel (6)
Be disturbed, and after preventing control panel (6) from matching with driving plate (5) it is affected by vibration larger, by the way that barricade (11) are arranged, one
Aspect ensure that the bonding strength between control panel (6) and driving plate (5), verify that control panel (6) can by vibration-testing, separately
On the one hand it can be realized the simulation letter improved on control panel (6) to the high-voltage power side i.e. interference shielding of three-phase connector side
Number quality, between AC busbar (8) and box body (50) side wall and between DC busbar (9) box body adjacent thereto (50) side wall, point
It is not fixed with heat conductive insulating pad, heat conductive insulating pad is made of the higher isolation material of thermal coefficient, to realize being to insulate and lead
The effect of heat, the heat on busbar can be shed in time, guarantee the circulation of electric current, and realize AC busbar (8) and DC busbar
(9) it can closely be adjacent on the corresponding side wall of box body (50), driving plate (5) is welded on IGBT module by pad mode
(4) on, driving plate (5) does not need special anti-vibration support plate, and AC busbar (8) and three-phase connector (1) pass through zinc-plated outer
Hexagon flange bolt (12) is connected, and outer-hexagonal flange bolt (12) and the contact area of AC busbar (8) are big, in tightening operation
When, under same torque, pressure is relatively small, effectively prevents the phenomenon that busbar causes busbar section to become smaller due to deformation, also
Reduce the contact resistance between AC busbar (8) and three-phase connector (1)；The zinc-plated scheme of outer-hexagonal flange bolt (12), energy
Enough play the role of shunting, in other words, when institute's AC busbar (8) and three-phase connector (1) are connected, one part of current can be by outer
Hexagon flange bolt (12) flows into AC busbar (8) and three-phase connector (1), the turn-on effect of electric current is improved, using zinc-plated
Outer-hexagonal flange bolt (12), compared with the temperature of the junction of common bolt connection AC busbar (8) and three-phase connector (1)
It decreases, therefore, using the outer-hexagonal flange bolt (12) of zinc-plated processing, on the basis of playing shunting function, control panel
(6) between driving plate (5) and between control panel (6) and signal connector (3), pass through corresponding pinboard (13) respectively
Be connected, pinboard (13) is the hardened structure with certain bending angle, the shape of the hardened structure can flexible setting, for connecting
Control panel (6) and driving plate (5) are connect, and for connecting control panel (6) and signal connector (3), control panel (6) and signal connect
The separated not connected of device (3) is connect, is electrically connected indeed through pinboard (13), DC busbar (9) uses stack-design, and DC is female
The anode of row (9) is parallel with negative terminal to be superimposed, and for reducing the stray inductance in DC path, adopts between anode and negative terminal
Isolation electrically is realized with insulating paper, prevents short circuit, capacitor (10), i.e. DC support capacitor (10), using outer busbar form,
It is external that DC busbar (9) is set as capacitor (10), rather than it is internal to be integrated in capacitor (10), and by the connection terminal of capacitor (10) with
IGBT module (4) is directly connected to, the cooling water channel side of IGBT module (4), is conducive to generate the connection terminal of capacitor (10)
Be thermally conducted to cooling water, improve heat dissipation effect, in terms of circuit layout, baffle (7) is led on circuit with DC busbar (9)
It is logical, the connecting pin of capacitor (10) and connecting pin of DC busbar (9) is top-down is connected on IGBT module (4), DC
Another connecting pin of busbar (9) is connected by flange bolt with two-phase connector (2), is formed dc power and is inputted path, drives
It is fixed with current sensor on movable plate (5), copper post (14) are fitted in current sensor；One end of AC busbar (8) passes through bolt
It is fixed on copper post (14), the other end is connected by flange bolt with three-phase connector (1), is formed AC power and is exported road
Diameter corresponds to three-phase connector (1), and copper post (14) is set as three, and three copper posts (14) are on the basis of realizing electrical connection, energy
Enough realize that the connection of controller corresponding function component is more compact, three copper posts (14) are arranged side by side, by AC busbar (8), driving plate
(5) run through and fix and overlap together with IGBT module (4), then tightened with bolt, i.e., copper post (14) is axially disposed spiral shell
Pit realizes the compactness of the internal functional component assembling structure of box body (50) for installing bolt accordingly, and makes entire
DC bus path greatly shortens, and greatly reduces the stray inductance in DC path, opens to reduce IGBT module (4)
Peak voltage/electric current in logical/turn off process, improve IGBT module (4) uses secure threshold, improves power density,
It is connected by the structure of copper post (14), reduces controller volume, box body (50) is processed using the material of monolithic conductive magnetic conduction, and DC is female
The design for arranging (9), AC busbar (8), the electric components such as copper post (14), in the case where guaranteeing current capacity, DC busbar (9) and
The thickness of AC busbar (8) is set as 3mm or so, and copper post (14) is hollow structure.
2. the electromagnetic-field-shielded system of a kind of electric vehicle motor controller according to claim 1, it is characterized in that: dropping
The external of reservoir (21) installs 1 layer of outer shield body (19), and electric machine controller fixed plate (43) is mounted on outer shield body
(19) inside, in the inside of outer layer shield (19), the lower part of electric machine controller fixed plate (43) is installed: 1 the first power supply
Surge Protector (30), 1 second source Surge Protector (31) and 1 signal wire, control line protector (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410232824.1A CN105099085B (en) | 2014-05-23 | 2014-05-23 | The electromagnetic-field-shielded system of electric vehicle motor controller |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410232824.1A CN105099085B (en) | 2014-05-23 | 2014-05-23 | The electromagnetic-field-shielded system of electric vehicle motor controller |
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| CN105099085B true CN105099085B (en) | 2018-12-04 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR102458297B1 (en) * | 2016-01-12 | 2022-10-25 | 삼성전자주식회사 | Electronic device and manufacturing method of the same |
| CN107205334A (en) * | 2016-03-17 | 2017-09-26 | 韩磊 | The defence electromagnetic pulse attacking system of container-type data center |
| CN107346926A (en) * | 2016-05-04 | 2017-11-14 | 韩磊 | The shielding external electromagnetic pulse attack system of electric vehicle motor controller |
| CN107367093B (en) * | 2016-05-11 | 2020-10-20 | 广东特信超导技术有限公司 | Intelligent controller for cryogenic refrigerator |
| CN106025869B (en) * | 2016-07-25 | 2018-10-09 | 国电南瑞科技股份有限公司 | A kind of second power equipment of site installation convenient for heat dissipation |
| CN106357126A (en) * | 2016-10-31 | 2017-01-25 | 天津安捷励电控技术有限责任公司 | Current control structure, motor controller and electric vehicle |
| CN106659038A (en) * | 2016-11-13 | 2017-05-10 | 刘军 | Power controller based on die-casting mould structure |
| CN107635386B (en) * | 2017-08-08 | 2019-10-11 | 芜湖市凯鑫避雷器有限责任公司 | A kind of High-Voltage Electrical Appliances insulating mask arrangement |
| CN109195427B (en) * | 2018-11-07 | 2024-04-23 | 珠海格力电器股份有限公司 | Controller assembly and electric automobile |
| CN111959292A (en) * | 2020-08-21 | 2020-11-20 | 长春一汽富晟集团有限公司 | High-pressure discharge method for motor controller after collision of electric automobile |
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Effective date of registration: 20191211 Address after: 101100 Beijing city Shuaifuyuan Tongzhou District Building No. 32 room 912 Patentee after: Yue Xiulan Address before: 101100 Beijing city Shuaifuyuan Tongzhou District Building No. 32 room 912 Patentee before: Han Lei |
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