CN107487185B - Electric machine controller internal electric source over under-voltage protection circuit, method and electric car - Google Patents
Electric machine controller internal electric source over under-voltage protection circuit, method and electric car Download PDFInfo
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- CN107487185B CN107487185B CN201611219309.5A CN201611219309A CN107487185B CN 107487185 B CN107487185 B CN 107487185B CN 201611219309 A CN201611219309 A CN 201611219309A CN 107487185 B CN107487185 B CN 107487185B
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- overvoltage
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000004804 winding Methods 0.000 claims abstract description 75
- 230000005611 electricity Effects 0.000 claims abstract description 14
- 238000001514 detection method Methods 0.000 claims abstract description 13
- 230000005284 excitation Effects 0.000 claims description 28
- 230000005294 ferromagnetic effect Effects 0.000 claims description 8
- 238000000605 extraction Methods 0.000 claims description 5
- 230000008901 benefit Effects 0.000 claims description 3
- 230000005291 magnetic effect Effects 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
- B60L3/0084—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to control modules
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
- H02H3/207—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage also responsive to under-voltage
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
- H02H3/24—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a kind of automatic open-phase protection circuit of electric machine controller internal electric source overvoltage/undervoltage, method and corresponding electric machine controller and electric cars.The protection circuit includes: detection unit, control unit and execution unit; described control unit includes control processing module; the detection unit is for detecting electric machine controller internal power source voltage, and the internal power source voltage that will test is sent to control unit；If internal power source voltage is higher than preset overvoltage threshold or is lower than preset brownout threshold, the control processing module issues driving signal to the execution unit；Execution unit movement when receiving the driving signal, cutting electric machine controller is electrically connected with machine winding, the execution unit is the connector of controllable automatic spring, one end of the connector and the three-phase electricity high-voltage output end of electric machine controller connect, and the other end is connect with three-phase motor winding.
Description
Technical field
The present invention relates to technical field of vehicle safety, protect more particularly to a kind of electric machine controller internal electric source overvoltage/undervoltage
Circuit, guard method and and corresponding electric machine controller and corresponding electric car.
Background technique
As technology develops, electric car is more and more used.Electric car is also paid more and more attention safely.Electricity
Machine control system is an importance of electric car safety.For example, when electric car is on the road surface of low adhesive force, such as ice
Face when running at high speed, if internal power source voltage failure occurs for electric machine controller, needs electric machine control system to carry out failure in time
Processing.
Summary of the invention
One of the objects of the present invention is to provide a kind of automatic open-phase protection circuits of electric machine controller internal electric source overvoltage/undervoltage
To overcome or at least mitigate at least one of the drawbacks described above of the prior art.
To achieve the above object, the present invention provides the automatic open-phase protection circuit of electric machine controller internal electric source overvoltage/undervoltage, institute
Stating the automatic open-phase protection circuit of electric machine controller internal electric source overvoltage/undervoltage includes: detection unit, control unit and execution unit, institute
Stating control unit includes control processing module,
The detection unit is for detecting electric machine controller internal power source voltage, and the internal electric source electricity that will test
Pressure is sent to control unit；
Described control unit judges whether the internal power source voltage is higher than preset overvoltage threshold or lower than preset
Brownout threshold, if internal power source voltage is higher than preset overvoltage threshold or is lower than preset brownout threshold, at the control
It manages module and issues driving signal to the execution unit；
Execution unit movement when receiving the driving signal, cutting electric machine controller and machine winding are electrically connected
It connects, the execution unit is the connector of controllable automatic spring, and one end of the connector and the three-phase electricity of electric machine controller are high
Output end connection is pressed, the other end is connect with three-phase motor winding.
Specifically, three female plug connecting terminals of the connector are integrally formed, and draw three-phase high-voltage harness, and then with three
The connection of phase machine winding；Three male plug termination terminals of the connector are integrally formed, and are placed in motor controller casing；Or
Specifically, three male plug termination terminals of the connector are integrally formed, and draw three-phase high-voltage harness, and then with three
The connection of phase machine winding；Three female plug connecting terminals of the connector are integrally formed, and are placed in motor controller casing.
Specifically, reset spring is provided between the female plug connecting terminal and male plug termination terminal, the reset spring will
The female plug connecting terminal and male plug termination terminal are maintained at opposite extraction state, the male plug termination terminal of the connector or female inserted terminal
Sub- place is provided with excitation winding, is correspondingly provided with ferromagnetic component at the female plug connecting terminal or male plug termination terminal of the connector,
By controlling the power supply to the excitation winding, and control the automatic plug of the male plug termination terminal Yu the female plug connecting terminal.
Specifically, the power supply to the excitation winding is controlled using insulated gate bipolar transistor, if the internal electricity
Source voltage is higher than preset overvoltage threshold or is lower than preset brownout threshold, by the control of the insulated gate bipolar transistor
End is set low, and cuts off power supply to the excitation winding, so that the male plug termination terminal and the female plug connecting terminal company of disconnection automatically
It connects.
Specifically, the same electricity in electric machine controller is arranged in the insulated gate bipolar transistor and described control unit
On the plate of road.
The present invention also provides a kind of electric machine controller, the electric machine controller includes inside electric machine controller as described above
The automatic open-phase protection circuit of power supply overvoltage/undervoltage.
The present invention also provides a kind of electric car, the electric car includes electric machine controller internal electric source as described above
The automatic open-phase protection circuit of overvoltage/undervoltage or electric machine controller as described above.
The present invention also provides it is a kind of using the above-mentioned automatic open-phase protection circuit of electric machine controller internal electric source overvoltage/undervoltage into
The method of the automatic open-phase protection of row electric machine controller internal electric source overvoltage/undervoltage.According to an aspect of the present invention, the method packet
It includes:
Detect electric machine controller internal power source voltage；
Judge whether the internal power source voltage is higher than preset overvoltage threshold or lower than preset brownout threshold；And
If the internal power source voltage is higher than preset overvoltage threshold or is lower than preset brownout threshold, using controllable
Connector cutting electric machine controller and the machine winding of automatic spring are electrically connected, one end of the connector and electric machine controller
The connection of three-phase electricity high-voltage output end, the other end connect with three-phase motor winding.
In the present invention, in the case where electric machine controller internal power source voltage exception, electric machine controller and motor are cut off
The electrical connection of winding, i.e. being electrically connected between the three-phase high-voltage and three-phase motor winding of disconnection electric machine controller.Thus, it is possible to
It avoids electric vehicle that whipping phenomenon occurs, or reduces electric vehicle at least in certain degree and occur electricity when running at high speed
Vehicle whipping phenomenon when machine controller internal power source voltage abnormal conditions.
Detailed description of the invention
Fig. 1 is schematic diagram of the electric machine controller to the power supply circuit of machine winding.
Fig. 2 is a kind of flow chart of power supply overvoltage/undervoltage guard method.
Fig. 3 is showing for the automatic open-phase protection circuit of electric machine controller internal electric source overvoltage/undervoltage according to an embodiment of the invention
It is intended to.
Fig. 4 is the schematic diagram of controllable automatic spring connector.
Fig. 5 is the flow chart of another power supply overvoltage/undervoltage open-phase protection method.
Appended drawing reference:
| L | Machine winding | 3 | Reset spring |
| 1 | Female plug connecting terminal | 4 | Excitation winding |
| 2 | Male plug termination terminal | 5 | Controllable switch |
Specific embodiment
In the accompanying drawings, same or similar element is indicated using same or similar label or there is same or like function
Element.The embodiment of the present invention is described in detail with reference to the accompanying drawing.
In the description of the present invention, term " center ", " longitudinal direction ", " transverse direction ", "front", "rear", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "top", "bottom" "inner", "outside" is that orientation based on the figure or position are closed
System, is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must have
Specific orientation is constructed and operated in a specific orientation, therefore should not be understood as limiting the scope of the invention.
In order to be protected to electric machine controller, when electric machine controller detects electric machine controller internal power supply voltage
When higher than overvoltage threshold or being lower than brownout threshold, so that electric machine controller report failure, while carrying out troubleshooting, i.e., by leading
Motor three-phase windings are shorted to Power Groud by logical lower bridge arm transistor.It can be understood that the electric machine controller control is
Permanent magnet synchronous motor.Electric machine controller internal power supply refers to inside electric machine controller for the power supply of the internal components such as chip
Low-tension supply, and it is not the power supply Ud in figure.Power supply Ud in figure is the power battery in electric car, is for motor power supply
High voltage power supply.
The protection system includes detection unit, control unit and execution unit.Detection unit is for detecting electric machine controller
Internal power source voltage, and the internal power source voltage is sent to control unit.Control unit includes comparison module and control processing
Module.Comparison module is for judging whether the internal power source voltage is higher than preset overvoltage threshold point or lower than preset under-voltage
Threshold point, and judging result is sent to control processing module.If internal power source voltage be higher than preset overvoltage threshold point or
Person is lower than preset brownout threshold point, and control processing module sends a signal to execution unit, and execution unit is by motor three-phase windings
It is shorted to Power Groud.
Specifically, control processing module sets low the driving signal of upper bridge arm transistor VT1, VT3, VT5, by lower bridge arm
Transistor VT2, VT4, VT6 driving signal sets height, thus the three-phase windings of electrical short circuit, that is, motor three-phase windings are short-circuit
To Power Groud.In such protection system, upper bridge arm transistor VT1, VT3, VT5 and lower bridge arm transistor VT2, VT4, VT6 are used
Make execution unit.Advantage is available with the device of original motor-drive circuit as not needing to increase new execution list
Member.
Diode VD1, VD2, VD3, VD4, VD5 and VD6 are also shown in figure, are used for pressure stabilizing.
Although inventors have found that above-mentioned circuit can in internal power supply electric voltage exception cutoff high it is defeated to motor
The high-pressure energy entered avoids motor damage and avoids motor control abnormal.But when the vehicle is driving at high speed, due to machine winding
The counter electromotive force e of LA、eB、eCEffect, three-phase motor winding short circuit to Power Groud can generate electric current iA、iB、iC, and then generate
One negative moment (for example, 8Nm).The negative moment will generate a biggish negative force at wheel end multiplied by speed ratio (such as 10)
Square (80Nm).It is influenced by the negative moment at wheel end, ESP can not keep vehicle body to stablize according to surface conditions.In low adhesive force
Whipping may occur for road surface.It should be pointed out that above-mentioned numerical value is only exemplary.
To which the present inventor has done further improvement to above-mentioned protection system.Improved motor control
The automatic open phase protection of device internal electric source overvoltage/undervoltage equally includes detection unit, control unit and execution unit.
But the execution unit is the connector on three-phase high-voltage line (to the route of three-phase motor winding power).Fig. 1 with
In Fig. 3, connecting with A point is A phase winding, and connecting with B point is B phase winding, and connecting with C point is C phase winding, for every phase
Winding has all been connected a resistance R.A phase winding can only be cut off, it is advantageous that, while cutting off three-phase windings.It is understood that
, being electrically connected for electric machine controller and machine winding can also be cut off using other devices or structure.For example, can use
Relay disconnects between the three-phase high-voltage feeder ear (A point, B point in figure and C point) of electric machine controller and three-phase motor winding L
Electrical connection.
The connector is designed as a kind of connector of controllable automatic spring.By to electric machine controller internal power supply
Voltage is compared with threshold voltage, when electric machine controller internal power supply voltage is greater than overvoltage threshold point or is less than under-voltage
Threshold point, control unit send a control signal to the connector as execution unit, the pop-up of control connector or disconnection, realize three
Effect of the circuitry phase from dynamic circuit breaker phase.As shown in Figure 3.Fig. 3 bend indicates that circuit disconnects at this.Since machine winding L is in disconnected
Line state, the counter electromotive force e of machine winding LA、eB、eCElectric current will not be generated, negative moment will not be generated.To both realize
Stop the safeguard protection powering to motor, and can be avoided generation negative moment and make vehicle whipping, substantially increases safety, especially
It is the safety under running at high speed.
Specifically, the automatic open-phase protection circuit of electric machine controller internal electric source overvoltage/undervoltage of the invention include: detection unit,
Control unit and execution unit.
The detection unit is for detecting electric machine controller internal power source voltage, and the internal electric source electricity that will test
Pressure is sent to control unit.The detection unit can be any voltage check device appropriate.Advantageously, the detection is single
Member is arranged inside electric machine controller, and the signal exported is the digital signal for indicating electric machine controller internal power source voltage.
Described control unit judges whether the internal power source voltage is higher than preset overvoltage threshold or lower than preset
Brownout threshold.Specifically, preset overvoltage threshold and preset brownout threshold are stored in the memory of control unit.It is advantageous
It is to be stored in readable and writable memory.It is thus possible to adjust the preset overvoltage threshold and preset under-voltage threshold as needed
Value.
If internal power source voltage is higher than preset overvoltage threshold or is lower than preset brownout threshold, described control unit
Driving signal is issued to the execution unit.Specifically, described control unit includes comparison module and controls processing module, described
Comparison module is used to judge whether the internal power source voltage to be higher than preset overvoltage threshold or be lower than preset brownout threshold,
And judging result is sent to the control processing module, if internal power source voltage is higher than preset overvoltage threshold or is lower than
Preset brownout threshold, the control processing module issue driving signal to the execution unit.
Execution unit movement when receiving the driving signal, three-phase of the cutting electric machine controller to machine winding
Power supply, that is to say, that disconnect electric machine controller three-phase high-voltage feeder ear (A point, B point and C point in figure) and three-phase motor around
Electrical connection between group L.
In the present invention, in the case where internal power source voltage exception, electric machine controller is cut off to three-phase motor winding L's
Power supply, so that electric current iA、iB、iCIt is zero, avoids the generation of above-mentioned negative moment.Thus, it is possible to which it is existing to avoid electric vehicle that whipping occurs
As.
As shown, relay principle is applied to connector by the present invention, the connector of controllable automatic spring is formed.And benefit
Use the connector of the controllable automatic spring as execution unit.That is, the execution unit is controllable automatic spring
Connector, one of one end of the connector and the three-phase electricity high-voltage output end of electric machine controller connect, the other end and three-phase electricity
The connection of one of machine winding.
As shown in figure 4, the excitation winding 4 of connector is powered by power supply U, and can be disconnected by the control of controllable switch 5
Power supply to excitation winding 4.In the illustrated embodiment, controllable switch 5 is excitation IGBT (insulated gate bipolar transistor).Insulation
Grid bipolar junction transistor is controlled by the driving signal that above-mentioned control unit issues.In the control terminal of insulated gate bipolar transistor
When the level of G is high, the conducting of the both ends E, C；When the level of control terminal G is low, the both ends E, C are disconnected.It is understood that excitation
Winding 4 can be used as a component part of connector.For example, excitation winding 4 is fixed on motor control together with male plug termination terminal
On the shell of device processed.
When generator controller internal electric source failure, control unit sets low excitation IGBT driving signal, cuts off the power U pairs
The power supply of excitation winding 4 causes to control three-phase high-voltage line connector automatic spring.Its flow chart is as shown in Figure 5.
A connector is illustrated only in Fig. 4.Preferably, the quantity of the connector is three, each connector control
Power supply to a machine winding L, and three connector linkages.To, it is only necessary to an excitation winding 4 and an insulation are set
Grid bipolar junction transistor.Structure is simpler, and cost is lower.Specifically, three connectors can be integrated into a connector.
In one alternate embodiment, three female plug connecting terminals 1 of three connectors are integrally formed, and described three connect
Three male plug termination terminals 2 of plug-in unit are integrally formed.
Specifically, excitation winding 4 is arranged at the male plug termination terminal 1 of connector.It is correspondingly provided at female plug connecting terminal 2
Ferromagnetic component.When controllable switch 5 is connected, excitation winding 4 generates magnetic field, to be attracted ferromagnetic component, and then female plug is driven to connect
Terminal 2 is mutually inserted with male plug termination terminal 1 and connect, realize electric machine controller three-phase high-voltage feeder ear (A point, B point in figure and
C point) with being electrically connected between three-phase motor winding L.To by controlling the power supply to the excitation winding 4, and described in controlling
The automatic plug of connector: be powered insertion, and power-off is extracted.Ferromagnetic component can be magnet, and can also be can be by magnetic field suction
Ferrite members.Advantageously, selecting ferrite members.To only generate the suction-combining force when excitation winding 4 establishes magnetic field.
Specifically, insulating materials is provided between ferromagnetic component and female plug connecting terminal or male plug termination terminal.It should further be appreciated that
Ferromagnetic component is coated by insulating materials.The concrete shape of ferromagnetic component, fixation or connection structure between inserting terminal etc.
It can according to need setting.
As previously mentioned, controlling the power supply to the excitation winding 4, the driving signal using insulated gate bipolar transistor
It is sent to the control terminal of the insulated gate bipolar transistor.Specifically, when the internal power source voltage is higher than preset over-voltage
Threshold value or be lower than preset brownout threshold when, described control unit sets the control signal of the insulated gate bipolar transistor
It is low, lead to connector automatic spring.
Reset spring 3 is provided between the female plug connecting terminal 1 and male plug termination terminal 2, the reset spring 3 will be described
Female plug connecting terminal 1 and male plug termination terminal 2 are maintained at extraction state.In other words, male plug termination terminal 2 is maintained at from female plug connecting terminal
1 state extracted.Advantageously, being provided with guide device to guide inserting between female plug connecting terminal 1 and male plug termination terminal 2 relatively
Pull out movement
Preferably, the controllable switch 5 and described control unit are arranged on the same circuit board in electric machine controller.It is public
Inserting terminal 2 and excitation winding 4 are arranged on the shell of electric machine controller；Or excitation winding 4 and the setting of female plug connecting terminal 1 exist
Together, and it is fixedly attached to the shell of electric machine controller.On-off is connect relative to relay is added in three phase supply circuit
The method for opening three phase supply circuit, the mode for optimizing connector can achieve the effect for reducing volume.And since connector is set
It sets on the shell of electric machine controller, the control circuit (controllable switch 5) and control object of excitation winding 4 facilitate control apart from short
System, without other connection wiring harnesses of extraction.Furthermore it overhauls more convenient.
The present invention also provides a kind of electric machine controller, the electric machine controller includes inside electric machine controller as described above
The automatic open-phase protection circuit of power supply overvoltage/undervoltage.
The present invention also provides a kind of electric car, the electric car includes electric machine controller internal electric source as described above
The automatic open-phase protection circuit of overvoltage/undervoltage or electric machine controller as described above.
Correspondingly, the present invention, which provides, a kind of utilizes the automatic open-phase protection electricity of above-mentioned machine controller internal electric source overvoltage/undervoltage
Road or electric machine controller as described above are come the method that carries out the automatic open-phase protection of electric machine controller internal electric source overvoltage/undervoltage.
The automatic open-phase protection method of electric machine controller internal electric source overvoltage/undervoltage includes:
Detect electric machine controller internal power source voltage V0；
Judge whether the internal power source voltage is higher than preset overvoltage threshold or lower than preset brownout threshold；And
If the internal power source voltage is higher than preset overvoltage threshold or is lower than preset brownout threshold, using controllable
Connector cutting electric machine controller and the machine winding of automatic spring are electrically connected.
The connector of the controllable automatic spring is attracted when controllable switch is connected, and is popped up when controllable switch disconnects.?
Under power failure state, the connector of the controllable automatic spring, which is in, flicks state, so that electric machine controller cannot be to machine winding L
Power supply.After the power-up, the connector of the controllable automatic spring is in attracting state.That is, controllable switch 5 is one normal
Make and break is closed.In internal power source voltage exception, controllable switch 5 is disconnected, so that the connector of controllable automatic spring is in bullet
Open state (male plug termination terminal and female plug connecting terminal are disconnected and being in electrical contact).
That is, in electric machine controller internal power source voltage V0When internal power source voltage exception, electric machine controller is cut off
To the three phase supply of machine winding, rather than machine winding is shorted to Power Groud, to avoid generating negative moment.
Advantageously, using the connector cutting electric machine controller of controllable automatic spring described above to machine winding
Three phase supply.
Specifically, three female plug connecting terminals 1 of the connector are integrally formed, and draw three-phase high-voltage harness, Jin Eryu
Three-phase motor winding (stator winding) connection；Three male plug termination terminals 2 of the connector are integrally formed, and are placed in electric machine controller
Shell；Or
Three male plug termination terminals 2 of the connector are integrally formed, and draw three-phase high-voltage harness, and then and three-phase motor
Winding connection；Three female plug connecting terminals 1 of the connector are integrally formed, and are placed in motor controller casing.
Reset spring 3 is provided between the female plug connecting terminal 1 and male plug termination terminal 2, the reset spring 3 will be described
Female plug connecting terminal 1 and male plug termination terminal 2 are maintained at opposite extraction state, are provided with and encourage at the male plug termination terminal 2 of the connector
Magnetic winding 4 is provided with magnetic component at female plug connecting terminal 1, by controlling the power supply to the excitation winding 4, and described in controlling
The automatic plug of male plug termination terminal 2 and the female plug connecting terminal 1.
The power supply to the excitation winding 4 is controlled using insulated gate bipolar transistor, if the internal power source voltage
Higher than preset overvoltage threshold or it is lower than preset brownout threshold, the control terminal of the insulated gate bipolar transistor is set
It is low, the power supply to the excitation winding 4 is cut off, so that disconnection connects automatically for the male plug termination terminal 2 and the female plug connecting terminal 1
It connects.
Finally it is noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations.This
The those of ordinary skill in field is it is understood that be possible to modify the technical solutions described in the foregoing embodiments or right
Part of technical characteristic is equivalently replaced；These are modified or replaceed, and it does not separate the essence of the corresponding technical solution originally
Invent the spirit and scope of each embodiment technical solution.
Claims (9)
1. a kind of automatic open-phase protection circuit of electric machine controller internal electric source overvoltage/undervoltage characterized by comprising detection unit,
Control unit and execution unit, described control unit include control processing module,
The detection unit is for detecting electric machine controller internal power source voltage, and the internal power source voltage hair that will test
It send to control unit；
Described control unit judges whether the internal power source voltage is higher than preset overvoltage threshold or lower than preset under-voltage
Threshold value, if internal power source voltage is higher than preset overvoltage threshold or is lower than preset brownout threshold, the control handles mould
Block issues driving signal to the execution unit；
Execution unit movement when receiving the driving signal, cutting electric machine controller are electrically connected with machine winding,
The execution unit is the connector of controllable automatic spring, and one end of the connector and the three-phase electricity high pressure of electric machine controller are defeated
Outlet connection, the other end are connect with three-phase motor winding.
2. the automatic open-phase protection circuit of electric machine controller internal electric source overvoltage/undervoltage as described in claim 1, which is characterized in that institute
Three female plug connecting terminals (1) for stating connector are integrally formed, and draw three-phase high-voltage harness, and then connect with three-phase motor winding
It connects；Three male plug termination terminals (2) of the connector are integrally formed, and are placed in motor controller casing.
3. the automatic open-phase protection circuit of electric machine controller internal electric source overvoltage/undervoltage as described in claim 1, which is characterized in that institute
Three male plug termination terminals (2) for stating connector are integrally formed, and draw three-phase high-voltage harness, and then connect with three-phase motor winding
It connects；Three female plug connecting terminals (1) of the connector are integrally formed, and are placed in motor controller casing.
4. the automatic open-phase protection circuit of electric machine controller internal electric source overvoltage/undervoltage as claimed in claim 2 or claim 3, feature exist
In being provided with reset spring (3) between the female plug connecting terminal (1) and male plug termination terminal (2), the reset spring (3) will
The female plug connecting terminal (1) and male plug termination terminal (2) are maintained at opposite extraction state, the male plug termination terminal (2) of the connector
Or excitation winding (4) are provided at female plug connecting terminal (1), at the female plug connecting terminal (1) or male plug termination terminal (2) of the connector
It is correspondingly provided with ferromagnetic component, by controlling the power supply to the excitation winding (4), and controls the male plug termination terminal (2)
With the automatic plug of the female plug connecting terminal (1).
5. the automatic open-phase protection circuit of electric machine controller internal electric source overvoltage/undervoltage as claimed in claim 4, which is characterized in that benefit
The power supply to the excitation winding (4) is controlled with insulated gate bipolar transistor, is preset if the internal power source voltage is higher than
Overvoltage threshold or be lower than preset brownout threshold, the control terminal of the insulated gate bipolar transistor is set low, cutting pair
The power supply of the excitation winding (4), so that the male plug termination terminal (2) disconnects automatically with the female plug connecting terminal (1).
6. the automatic open-phase protection circuit of electric machine controller internal electric source overvoltage/undervoltage as claimed in claim 5, which is characterized in that institute
State insulated gate bipolar transistor and same circuit board that described control unit is arranged in electric machine controller on.
7. a kind of electric machine controller, which is characterized in that inside electric machine controller such as of any of claims 1-6
The automatic open-phase protection circuit of power supply overvoltage/undervoltage.
8. a kind of electric car, which is characterized in that including electricity inside electric machine controller such as of any of claims 1-6
The automatic open-phase protection circuit of source overvoltage/undervoltage or electric machine controller as claimed in claim 7.
9. a kind of automatic open-phase protection method of electric machine controller internal electric source overvoltage/undervoltage characterized by comprising
Detect electric machine controller internal power source voltage；
Judge whether the internal power source voltage is higher than preset overvoltage threshold or lower than preset brownout threshold；And
If the internal power source voltage is higher than preset overvoltage threshold or is lower than preset brownout threshold, using controllable automatic
Connector cutting electric machine controller and the machine winding of pop-up are electrically connected, and the three of one end of the connector and electric machine controller
Mutually electric high-voltage output end connection, the other end are connect with three-phase motor winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611219309.5A CN107487185B (en) | 2016-12-26 | 2016-12-26 | Electric machine controller internal electric source over under-voltage protection circuit, method and electric car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611219309.5A CN107487185B (en) | 2016-12-26 | 2016-12-26 | Electric machine controller internal electric source over under-voltage protection circuit, method and electric car |
Publications (2)
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| CN107487185B true CN107487185B (en) | 2019-09-20 |
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| CN111009881B (en) * | 2019-12-11 | 2021-07-13 | 珠海格力电器股份有限公司 | IGBT protection method and motor system |
| CN113352894B (en) * | 2021-04-28 | 2022-07-01 | 东风汽车集团股份有限公司 | Power battery high-voltage abnormal power-off protection method and system |
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| CN103022965A (en) * | 2012-12-20 | 2013-04-03 | 安徽巨一自动化装备有限公司 | Monitoring circuit of 12V voltage in electric vehicle electric drive controller |
| CN103384056A (en) * | 2013-08-08 | 2013-11-06 | 安徽巨一自动化装备有限公司 | 12-V power supply protection circuit for electric driving controller of electromobile |
| CN203491665U (en) * | 2013-08-13 | 2014-03-19 | 上海三开电气有限公司 | Automatic reset overvoltage/undervoltage protection circuit |
| CN103738198A (en) * | 2013-12-18 | 2014-04-23 | 奇瑞汽车股份有限公司 | Vehicle electrical motor control system with safety monitoring function and monitoring method of vehicle electrical motor control system |
| CN203674691U (en) * | 2013-12-23 | 2014-06-25 | 北京易艾斯德科技有限公司 | Undervoltage and overvoltage protection circuit for power supply circuit |
| CN203774770U (en) * | 2014-02-13 | 2014-08-13 | 施耐德电器工业公司 | Circuit breaker with overvoltage and undervoltage protective module |
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2016
- 2016-12-26 CN CN201611219309.5A patent/CN107487185B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103022965A (en) * | 2012-12-20 | 2013-04-03 | 安徽巨一自动化装备有限公司 | Monitoring circuit of 12V voltage in electric vehicle electric drive controller |
| CN103384056A (en) * | 2013-08-08 | 2013-11-06 | 安徽巨一自动化装备有限公司 | 12-V power supply protection circuit for electric driving controller of electromobile |
| CN203491665U (en) * | 2013-08-13 | 2014-03-19 | 上海三开电气有限公司 | Automatic reset overvoltage/undervoltage protection circuit |
| CN103738198A (en) * | 2013-12-18 | 2014-04-23 | 奇瑞汽车股份有限公司 | Vehicle electrical motor control system with safety monitoring function and monitoring method of vehicle electrical motor control system |
| CN203674691U (en) * | 2013-12-23 | 2014-06-25 | 北京易艾斯德科技有限公司 | Undervoltage and overvoltage protection circuit for power supply circuit |
| CN203774770U (en) * | 2014-02-13 | 2014-08-13 | 施耐德电器工业公司 | Circuit breaker with overvoltage and undervoltage protective module |
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| CN107487185A (en) | 2017-12-19 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Over and under voltage protection circuit and method of internal power supply of motor controller and electric vehicle Effective date of registration: 20211213 Granted publication date: 20190920 Pledgee: BEIJING AUTOMOTIVE GROUP Co.,Ltd. Pledgor: Borgward Automotive (China) Co., Ltd. Registration number: Y2021990001167 |
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Date of cancellation: 20231201 Granted publication date: 20190920 Pledgee: BEIJING AUTOMOTIVE GROUP Co.,Ltd. Pledgor: Beijing baowo Automobile Co.,Ltd.|Borgward Automotive (China) Co., Ltd. Registration number: Y2021990001167 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
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