CN108701988A - Reverse polarity protection-mos field effect transistor is protected by EMK- measurements - Google Patents

Reverse polarity protection-mos field effect transistor is protected by EMK- measurements Download PDF

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Publication number
CN108701988A
CN108701988A CN201780010692.XA CN201780010692A CN108701988A CN 108701988 A CN108701988 A CN 108701988A CN 201780010692 A CN201780010692 A CN 201780010692A CN 108701988 A CN108701988 A CN 108701988A
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CN
China
Prior art keywords
intermediate circuit
reverse polarity
voltage
circuit voltage
motor
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201780010692.XA
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Chinese (zh)
Other versions
CN108701988B (en
Inventor
P.科西奥里斯
N.姆博格尼
A.N.阿拉姆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch Automotive Steering GmbH
Original Assignee
Robert Bosch Automotive Steering GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
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Publication of CN108701988A publication Critical patent/CN108701988A/en
Application granted granted Critical
Publication of CN108701988B publication Critical patent/CN108701988B/en
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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H11/00—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result
    • H02H11/002—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of inverted polarity or connection; with switching for obtaining correct connection
    • H02H11/003—Emergency protective circuit arrangements for preventing the switching-on in case an undesired electric working condition might result in case of inverted polarity or connection; with switching for obtaining correct connection using a field effect transistor as protecting element in one of the supply lines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/04—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear
    • B62D5/0457—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such
    • B62D5/0481—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such monitoring the steering system, e.g. failures
    • B62D5/0484—Power-assisted or power-driven steering electrical, e.g. using an electric servo-motor connected to, or forming part of, the steering gear characterised by control features of the drive means as such monitoring the steering system, e.g. failures for reaction to failures, e.g. limp home
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
    • H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
    • H02H7/122—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • H02H9/042—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage comprising means to limit the absorbed power or indicate damaged over-voltage protection device
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
    • H02J7/0034—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using reverse polarity correcting or protecting circuits

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Direct Current Motors (AREA)

Abstract

Specification includes a kind of equipment for making Vehicular turn, which includes:Final stage(3,4), for manipulating motor(1,2);Intermediate circuit, for the final stage(3,4)Supply of electrical energy, wherein the intermediate circuit has intermediate circuit voltage(V2,V3);Disconnect switch(8,9), it is used for the final stage(3,4)It is detached from from transfer;And reverse polarity protector(7), for preventing service voltage(5)Reversally it is connected to the final stage(3,4)On, wherein the equipment is in high intermediate circuit voltage(V2,V3)When generate a kind of pulse, for being closed the reverse polarity protector(7).

Description

It is measured by EMK- brilliant for reverse polarity protection-metal oxide semiconductor field-effect Body pipe is protected
The field of the invention
The present invention relates to a kind of equipment for making Vehicular turn and a kind of reversed polarity of transfer for avoiding vehicle The method of the damage of protector.
The background of the present invention
It is well known in the art:Disconnect switch and switch are by as reverse polarity protector.These power switch can be particularly It is configured to mos field effect transistor(Mosfet).
The general introduction of the present invention
Disconnect switch is particularly required, is filled to turn off the control of single motor or motor of steering It sets.Although a motor or servo motor for steering shuts down as a result, a steering capability can be kept.But It is to turn off servo motor to may result in the power power in other words for generating very high motor(Such as turn off inductance).This is electronic The power of machine can be more than the voltage strength of corresponding disconnect switch, thus can lead to the damage of the disconnect switch.Other work( Rate switchs, particularly reverse polarity protector may also be damaged.
Therefore task is:A kind of equipment is provided, which provides protection in order to avoid by high to a kind of reverse polarity protector The power of motor.
First embodiment as the present invention provides the equipment for making Vehicular turn, which includes:For right The final stage that is manipulated in motor, for the final stage supply of electrical energy intermediate circuit, make the final stage from transfer The disconnect switch of disengaging and reverse polarity protector, wherein there is the intermediate circuit intermediate circuit voltage, the reversed polarity to protect Shield device is for preventing from service voltage being reversally connected to final stage, wherein the equipment generates one when intermediate circuit voltage is high Kind pulse, for being closed the reverse polarity protector.
As second embodiment of the present invention, provide a method, for avoid vehicle transfer antipole The damage of property protector, includes the following steps:The intermediate circuit voltage of the bridge circuit of servo motor is measured;Will in Between circuit voltage be compared with comparison voltage;And if the intermediate circuit voltage is more than the comparison voltage, just Execute the first measure.
Illustrative embodiment illustrates in the dependent claims.
Illustrative embodiment according to the present invention provides a kind of equipment, wherein the reverse polarity protector is configured to Mos field effect transistor, and inherent two pole of body of the mos field effect transistor Pipe is directed toward against the intermediate circuit voltage.
If the body diode of the inherence of mos field effect transistor is against possible motor Power be directed toward, then the body diode of the inherence along cut-off direction connect.In this case, the power of the motor Power is located on mos field effect transistor in other words.If the power of the motor is more than the metal The voltage strength of oxide semiconductor field effect transistor, then the mos field effect transistor will be by To damage.Particularly, the reverse polarity protector in the form of mos field effect transistor may be compromised.It is special It is not in the energy field for eliminating the inductance of motor of the transfer, the power of the motor can generate the centre Circuit voltage.The servo motor corresponds to the motor.
In other embodiment according to the present invention, a kind of equipment is provided, wherein the inherence of the disconnect switch Body diode constructed along the direction of intermediate circuit voltage.
The mos field effect transistor of the disconnect switch connects in this wise so that its in body Diode(Intrinsic body diodes, inherent body diode)Along the passage direction of the power about the motor It is attached.
A kind of illustrative embodiment according to the present invention, provides a kind of equipment, and wherein the equipment has a kind of circuit, For intermediate circuit voltage to be compared with reference voltage, wherein if the intermediate circuit voltage is more than the reference electricity Pressure, then the circuit just generates a kind of pulse, for being closed the reverse polarity protector.
In another embodiment according to the present invention, a kind of equipment is provided, wherein if the circuit generates one kind Pulse is closed the reverse polarity protector, then intermediate circuit voltage is just applied on capacitor or power supply.
By connecting a kind of electric discharge possibility(Entlademöglichkeit)It can be for example based on the servo motor Inductance eliminate the power of motor, without damaging component.
It provides a method according to another embodiment of the present invention, wherein the first measure is to turn on the reverse polarity protection The power switch of device.
One kind that the present invention can be regarded as is contemplated that:A kind of circuit is set, the circuit probe servo motor and/or turn To the power of the motor of device final stage.A kind of the electronic of damage high, that the power switch being disconnected can be caused is being determined After the power of machine, it is closed corresponding power switch.It thus it can be prevented that the damage power switch.It particularly can be true It protects:The off-load on power supply of the power of the motor.
Single feature can certainly be combined with each other, and advantageous effect, the effect thus can also partly occur More than the summation of single effect.
The cutline of attached drawing
The other details and advantage of the present invention is become clear by means of the embodiment being shown in the accompanying drawings.Attached drawing is shown:
Fig. 1 has the circuit of the detection circuit of the power of high motor, and;
Fig. 2 has flow chart according to the method for the present invention.
The detailed description of illustrative embodiment
Fig. 1 shows two servo motor/motor 1,2 of the transfer of vehicle.Each phase e1, e2, e3 of motor 1,2 It is manipulated respectively by half-bridge 3,4.The half-bridge of motor is the final stage of the motor.Voltage V2, V3 are applied on half-bridge 3,4.Such as Half-bridge 3,4 described in fruit is for example turned off due to involved servo motor 1,2 or bridge circuit 3,4 interference, then Since the power of motor just will produce very high voltage V2, V3.The power of the motor can lead to corresponding disconnect switch 8,9 And/or the damage of reverse polarity protector 7.Particularly compromise the metal oxide semiconductor field-effect of the reverse polarity protector Transistor, because of power of the inherent body diode of the mos field effect transistor about the motor Along the connection of cut-off direction.Circuit 6 arranged according to the present invention, the circuit for voltage V2, V3 on bridge circuit 3,4 into Row measures --- for example by compared with prespecified reference voltage V1.If described voltage V2, V3 have been more than the comparison Voltage V1, then this point is identified and connects the reverse polarity protector 7.It can make motor in this way Power unloads on power supply 5.The reverse polarity protector 7 and/or disconnect switch 8,9 can be configured to MOS field Effect transistor.
Disconnect switch 8,9 and reverse polarity protector 7 is shown in FIG. 1, the disconnect switch has their inherence Diode 13, the reverse polarity protector has its inherent diode 14.If there is the high EMK of motor 1(Electricity The power of motivation power in other words), then disconnect switch 8 is connected by the diode 13 of the disconnect switch along current direction.But It is that the reverse polarity protector 7 does not connect along flow direction, because diode 14 is arranged along cut-off direction.When EMK very Gao Shi, it is therefore necessary to pulse is sent on reverse polarity protector 7 by equipment 6, therefore connect the reverse polarity protector 7. Otherwise, too high voltage declines on reverse polarity protector 7, which may lead to the breaking-up of the reverse polarity protector. It connecting after the reverse polarity protector, the EMK of motor 1 declines on disconnect switch 8 and on reverse polarity protector 7, It is thus achieved that EMK is assigned on two power switch.
Fig. 2 shows the flow charts with measurement process, and the intermediate circuit voltage 10 of half-bridge is determined in the flow chart. The intermediate circuit voltage is 11 compared with comparison voltage.If obtained:The intermediate circuit voltage is more than comparison voltage, then root According to the present invention by being starting point below:There are the power of high motor, the power of the motor can for corresponding disconnect switch and/ Or there is harm in reverse polarity protector.It can start a kind of measure 1 in this case, which causes, the power quilt of motor Limit the component for being either eliminated or being assigned to multiple electronics --- especially metal oxide semiconductor field-effect is brilliant On body pipe.Power by distributing the motor can reach:The voltage strength of single component is not exceeded.
It should be noted that:Concept " comprising " is not excluded for other element or method and step, similarly as concept " one It is a " and "an" be not excluded for multiple element and step.
Used reference numeral is served only for improving illustrative, and should never be considered as conditional, wherein this hair Bright protection domain is described by claims.
Reference numerals list:
1 motor;
2 motor;
3 half-bridges;
4 half-bridges;
5 direct voltage sources;
6 comparison circuits;
7 are used as reverse polarity protector(Verpolschutz)Power switch;
8 power switch as the disconnect switch of the first motor;
9 power switch as the disconnect switch of the first motor;
10 measure intermediate circuit voltage;
11 are compared intermediate circuit voltage with comparison voltage/reference voltage;
12 connect reverse polarity protector;
The inherent body diode of 13 mos field effect transistor/power switch;
The inherent body diode of 14 mos field effect transistor/power switch;
First phase of e1 motor;
Second phase of e2 motor;
The third phase of e3 motor;
V1 comparison voltages;
The intermediate circuit voltage of the first motor of V2;
The intermediate circuit voltage of the second motor of V3;
Voltages of the V4 on the disconnect switch of the first motor;
Voltages of the V5 on the disconnect switch of the second motor;
Voltages of the V6 on reverse polarity protector.

Claims (7)

1. the equipment for making Vehicular turn, including:
Final stage(3,4), for manipulating a kind of motor(1,2);
Intermediate circuit, for the final stage(3,4)Supply of electrical energy, wherein the intermediate circuit has intermediate circuit voltage(V2, V3);
Disconnect switch(8,9), it is used for the final stage(3,4)It is detached from from transfer;And
Reverse polarity protector(7), for preventing service voltage(5)Reversally it is connected to final stage(3,4)On;
It is characterized in that,
The equipment is in high intermediate circuit voltage(V2,V3)When generate a kind of pulse, for being closed the reverse polarity protector (7).
2. equipment according to claim 1, which is characterized in that the reverse polarity protector is configured to metal oxide half Conductor field-effect transistor, and the inherent body diode of the mos field effect transistor is against described Intermediate circuit voltage(V2,V3)It is directed toward on ground.
3. the equipment according to any one of claims 1 or 2, which is characterized in that the disconnect switch(8,9)It is described Inherent body diode is along the intermediate circuit voltage(V2,V3)Directional structure vectorical structure.
4. equipment according to any one of the preceding claims, which is characterized in that the equipment has circuit(6), it is used for By intermediate circuit voltage(V2,V3)With reference voltage(V1)It is compared, wherein if the intermediate circuit voltage(V2,V3)Greatly In reference voltage(V1), then the circuit(6)A kind of pulse is generated, for being closed the reverse polarity protector(7).
5. equipment according to claim 4, which is characterized in that if the circuit(6)It generates a kind of described for being closed Reverse polarity protector(7)Pulse, then the intermediate circuit voltage(V2,V3)Just it is applied to capacitor or power supply(5)On.
6. the method for the damage of the reverse polarity protector of the transfer for avoiding vehicle, includes the following steps:
Measure the intermediate circuit voltage of the bridge circuit of servo motor(10);
The intermediate circuit voltage is compared with comparison voltage(11);And
If the intermediate circuit voltage is more than the comparison voltage, the first measure is executed(12).
7. according to the method described in claim 6, it is characterized in that, first measure is to turn on the reverse polarity protector's Power switch.
CN201780010692.XA 2016-02-10 2017-01-25 Protection of reverse-polarity protection-metal oxide semiconductor field effect transistors by EMK-measurement Active CN108701988B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102016102264.0A DE102016102264A1 (en) 2016-02-10 2016-02-10 MOSFET protection by EKM measurement
DE102016102264.0 2016-02-10
PCT/EP2017/051468 WO2017137254A1 (en) 2016-02-10 2017-01-25 Protection of a polarity reversal protection mosfet by electromotive force measurement

Publications (2)

Publication Number Publication Date
CN108701988A true CN108701988A (en) 2018-10-23
CN108701988B CN108701988B (en) 2020-08-11

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CN201780010692.XA Active CN108701988B (en) 2016-02-10 2017-01-25 Protection of reverse-polarity protection-metal oxide semiconductor field effect transistors by EMK-measurement

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CN (1) CN108701988B (en)
DE (1) DE102016102264A1 (en)
WO (1) WO2017137254A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108189906A (en) * 2017-12-08 2018-06-22 联创汽车电子有限公司 Electric boosting steering system and its anti-towing astern method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022210645A1 (en) 2022-10-10 2024-04-11 Robert Bosch Gesellschaft mit beschränkter Haftung Electrical circuit for protecting semiconductor switches in high-voltage networks

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6577482B1 (en) * 1999-09-01 2003-06-10 Robert Bosch Gmbh Protective circuit for a series connection of a power semi-conductor end stage and an inductive consumer
EP1860774A1 (en) * 2006-05-22 2007-11-28 Fujitsu Ten Limited Polarity reversal protection circuit
US20080012532A1 (en) * 2004-03-25 2008-01-17 O2Micro, Inc. Secondary Battery Protection Circuit with Over Voltage Transient Protection
CN101903843A (en) * 2008-08-11 2010-12-01 株式会社自动网络技术研究所 Inductive load driving circuit
CN102171906A (en) * 2008-10-06 2011-08-31 西门子公司 Protective circuit for an intermediate circuit of an inverter, particularly a solar inverter, against overvoltages

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59600163D1 (en) * 1996-05-09 1998-05-28 Siemens Ag Reverse polarity protection circuit arrangement
DE102010042522A1 (en) * 2010-10-15 2012-04-19 Zf Lenksysteme Gmbh Method for operating e.g. permanent-magnet synchronous motor for power steering of motor car, involves setting pulse pattern to electric motor for producing flow of current, which is higher than rated current of electric motor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6577482B1 (en) * 1999-09-01 2003-06-10 Robert Bosch Gmbh Protective circuit for a series connection of a power semi-conductor end stage and an inductive consumer
US20080012532A1 (en) * 2004-03-25 2008-01-17 O2Micro, Inc. Secondary Battery Protection Circuit with Over Voltage Transient Protection
EP1860774A1 (en) * 2006-05-22 2007-11-28 Fujitsu Ten Limited Polarity reversal protection circuit
CN101903843A (en) * 2008-08-11 2010-12-01 株式会社自动网络技术研究所 Inductive load driving circuit
CN102171906A (en) * 2008-10-06 2011-08-31 西门子公司 Protective circuit for an intermediate circuit of an inverter, particularly a solar inverter, against overvoltages

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108189906A (en) * 2017-12-08 2018-06-22 联创汽车电子有限公司 Electric boosting steering system and its anti-towing astern method

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Publication number Publication date
DE102016102264A1 (en) 2017-08-10
WO2017137254A1 (en) 2017-08-17
CN108701988B (en) 2020-08-11

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