CN108521118A - The protection control circuit of automobile power drive system - Google Patents
The protection control circuit of automobile power drive system Download PDFInfo
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- CN108521118A CN108521118A CN201810288756.9A CN201810288756A CN108521118A CN 108521118 A CN108521118 A CN 108521118A CN 201810288756 A CN201810288756 A CN 201810288756A CN 108521118 A CN108521118 A CN 108521118A
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- 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
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
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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
-
- 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
- H02H7/18—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 batteries; for accumulators
-
- 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
- H02H9/041—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using a short-circuiting device
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Emergency Protection Circuit Devices (AREA)
Abstract
The invention discloses a kind of protection control circuits of automobile power drive system, including bus current detection module, busbar voltage detection module, main control chip and active short block；Bus current detection module, busbar voltage detection module are connect with main control chip respectively, and main control chip is connect with active short block, and lower three bridging of the active short block respectively with upper three bridge of motor driver and motor driver connects；The bus current detection module is for detecting bus current signal and being transferred to main control chip；The busbar voltage detection module is for detecting bus voltage signal and being transferred to main control chip；When being more than electric current secure threshold or bus voltage value more than voltage security threshold values in response to bus current value, the active short block executes actively short circuit.The present invention can prevent to overcharge, to reach the target of protection battery and user.
Description
Technical field
The invention belongs to electric machine controllers and field of security systems, and in particular to a kind of protection control of automobile power drive system
Circuit processed.
Background technology
Under the background that low-carbon economy becomes the mainstream of the times, electric vehicle becomes the Main way of current development of automobile.With
Constantly advancing for electric vehicle, powerful motor and controller are come out one after another, the motor that nowadays electric vehicle uses
Controller input is generally high-pressure system.In order to prevent in fault mode to the injury of electronic component, existing solution
Be exactly vehicle in a failure mode, especially under high speed fault condition, disconnect power component.But this solution will produce
Negative current, and negative torque is will produce, to charge to battery, battery is caused to damage.On severe hybrid power vehicle, if
Such fault mode occurs, and the scheme for simply using switch-off power component is unreasonable.Because in this failure mode,
The anti-sink current of busbar to battery pack there is a great harm for, entail dangers to vehicle safety.
Therefore, it is necessary to develop a kind of protection control circuit of automobile power drive system.
Invention content
The object of the present invention is to provide a kind of protection control circuits of automobile power drive system to be reached with preventing to overcharge
To the target of protection battery and user.
The protection control circuit of automobile power drive system of the present invention, including bus current detection module, busbar electricity
Press detection module, main control chip and active short block；
Bus current detection module, busbar voltage detection module are connect with main control chip respectively, main control chip and actively short-circuit mould
Block connects, and lower three bridging of the active short block respectively with upper three bridge of motor driver and motor driver connects；
The bus current detection module is for detecting bus current signal and being transferred to main control chip；
The busbar voltage detection module is for detecting bus voltage signal and being transferred to main control chip；
It is more than electric current secure threshold in response to bus current valueOrWhen bus voltage value is more than voltage security threshold values, the active is short
Road module executes actively short circuit.
Further, the bus current detection module includes Hall current sensor, is electrically connected with Hall current sensor
Voltage follow submodule, and the first differential amplification submodule for being electrically connected with voltage follow submodule；The Hall current
Sensor exports, for acquiring the current signal on busbar in real time successively through voltage follow submodule, first in the form of a voltage
Main control chip is inputed to after the processing of differential amplification submodule.
Further, the busbar voltage detection module includes partial pressure submodule, the isolated core being electrically connected with partial pressure submodule
Piece, and the second differential amplification submodule for being electrically connected with isolating chip；
The high voltage direct current acquired is converted to voltage dc by the partial pressure submodule, and by isolating chip carry out electrically every
From and input to the second differential amplification submodule, input to main control chip after the processing of the second differential amplification submodule.
The bus current detection module include Hall current sensor IA, resistance R1, resistance R2, resistance R3, resistance R4,
Resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, capacitance C1, capacitance C2, capacitance C3, capacitance C4, amplifier U1, amplification
Device U2 and switching diode D1；The Hall current sensor IA is connect through resistance R1 with 3 feet of amplifier U1, and Hall current passes
Sensor IA is also grounded after resistance R2, and one end of capacitance C1 is connect with 3 feet of amplifier U1, and the other end ground connection of capacitance C1 is put
2 feet of big device U1 are connect with 1 foot of amplifier U1, are grounded after the 4 foot meridian capacitor C2 of amplifier U1,1 foot of amplifier U1 is through electricity
Resistance R3 is connect with 5 feet of amplifier U2, and 5 feet of amplifier U2 are also grounded after resistance R5, resistance R6 successively, and the 6 of amplifier U2
Foot is grounded after resistance R4, capacitance C3 successively, 6 feet of amplifier U2 also 7 feet through resistance R7, resistance R8 Yu amplifier U2 successively
Connection, 7 feet of amplifier U2 are also grounded after resistance R9, capacitance C4 successively, tie point and the master control core of resistance R9 and capacitance C4
Piece connects, and still 3 feet of switching diode D1 are connect resistance R9 with the tie point of capacitance C4；It can real-time and accurately detect mother
Current value on line.
The busbar voltage detection module includes resistance R10, resistance R11, resistance R12, resistance R13, resistance R14, resistance
R15, resistance R16, resistance R17, resistance R18, resistance R19, resistance R20, resistance R21, capacitance C5, capacitance C6, capacitance C7, capacitance
C8, capacitance C9, isolating chip A1, amplifier U3 and switching diode D2；
Resistance R10 successively through resistance R11, resistance R12, resistance R13, resistance R14, resistance R15, resistance R16, resistance R17 with every
2 feet of off-chip piece A1 connect, and the tie point of resistance R16 and resistance R17 are grounded after resistance R18, one end ground connection of capacitance C5, electricity
The other end for holding C5 is connect with 2 feet of switching diode D2, one end ground connection of capacitance C6, the other end and isolating chip of capacitance C6
1 foot of A1 connects, and 3 feet, 4 feet and the 5 feet ground connection of isolating chip A1,7 feet of isolating chip A1 are through resistance R19's and amplifier U3
3 feet connect, and 6 feet of isolating chip A1 are connect through resistance R20 with 2 feet of amplifier U3, and the 8 foot meridian capacitor C7 of isolating chip A1 connect
3 feet on ground, amplifier U3 are also grounded after resistance R21, and capacitance C8 is in parallel with resistance R21, and 2 feet of amplifier U3 are also through resistance
R22 is connect with 1 foot of amplifier U3, and capacitance C9 is in parallel with resistance R22；It can real-time and accurately detect voltage value on busbar.
Further, the active short block includes resistance R21, resistance R22, resistance R23, resistance R24, resistance R25, electricity
Hinder R26, resistance R27, resistance R28, capacitance C10, capacitance C11, capacitance C12, capacitance C13, with door U900, NAND gate U901A, with
NOT gate U901B, NAND gate U901C, NAND gate U901D, NAND gate U902A, NAND gate U902B, NAND gate U902C, NAND gate
U902D and triode Q；
1 foot of the NAND gate U901A is connected with 9 feet of NAND gate U901C, and 1 foot and NAND gate of NAND gate U901A
Tie point between 9 feet of U901C is connect with main control chip, and 2 feet of NAND gate U901A are connected with 5 feet of NAND gate U901B,
And the tie point between 2 feet of NAND gate U901A and 5 feet of NAND gate U901B is connect with main control chip；
1 foot of the NOT gate U901A is connect through resistance R23 with 3.3V power supplys, and 2 feet of NOT gate U901A are also followed by through resistance R22
Ground, 3 feet of NOT gate U901A are connect with 10 feet of NAND gate U901C respectively, 4 feet of NAND gate U901B connect, NAND gate U901C
8 feet connect with 12 feet of NAND gate U901D, 6 feet of NAND gate U901B are connected with 13 feet of NAND gate U901D, NAND gate
11 feet of U901D and connect, and be grounded after the 5 foot meridian capacitor C13 of door U900 with 6 feet of door U900, with 4 feet of door U900 pass through according to
Secondary to be grounded after resistance R27, capacitance C12,12 feet of tie point and NAND gate U902D between resistance R27 and capacitance C12 connect
It connects, 13 feet of NAND gate U902D are connected with 3 feet of NAND gate U902A, 1 foot of NAND gate U902A and the 11 of NAND gate U902D
Foot connects, and 11 feet of NAND gate U902D also connects with 4 feet of NAND gate U902B and 5 feet respectively, 6 feet of NAND gate U902B and
Upper three bridging connects, and 6 feet of NAND gate U902D are also grounded after resistance R28, capacitance C10, the tie point of resistance R28 and capacitance C10
It is also connected respectively with 9 feet of NAND gate U902C and 10 feet, 8 feet of NAND gate U902C connect with lower three bridging；The 2 of NOT gate U902A
Foot is connect with 3 feet of triode Q, and a termination VCC of resistance R26, the other end of resistance R26 is grounded after capacitance C11, and resistance
The tie point of R26 and capacitance C11 are connect with 3 feet of triode Q, and 1 foot of triode Q is grounded after resistance R25, and the 2 of triode Q
Foot is grounded.
Beneficial effects of the present invention：When the electric current on detecting busbar is more than electric current secure threshold, or detect busbar
Voltage when being more than voltage security threshold value, actively short-circuit trigger signal can be sent out by main control chip, realizes actively short circuit, when
When main control chip fails, it can also realize actively short circuit, can prevent to overcharge, to reach the mesh of protection battery and user
Mark.
Description of the drawings
Fig. 1 is the principle of the present invention block diagram；
Fig. 2 is the circuit diagram of median generatrix current detection module of the present invention；
Fig. 3 is the circuit diagram of median generatrix voltage detection module of the present invention；
Fig. 4 is the circuit diagram of active short block in the present invention；
In figure：1, bus current detection module, 2, busbar voltage detection module, 3, main control chip, 4, active short block.
Specific implementation mode
The invention will be further described below in conjunction with the accompanying drawings.
The protection control circuit of automobile power drive system as shown in Figure 1, including bus current detection module 1, busbar electricity
Press detection module 2, main control chip 3 and active short block 4.Bus current detection module 1, busbar voltage detection module 2 are distinguished
Connect with main control chip 3, main control chip 3 is connect with active short block 4, active short block 4 respectively with motor driver
Lower three bridging of upper three bridge and motor driver connects.
The bus current detection module 1 is for detecting bus current signal and being transferred to main control chip 3；The busbar electricity
Pressure detection module 2 is for detecting bus voltage signal and being transferred to main control chip 3.Bus current detection module 1 and busbar voltage
The real-time bus current signal detected and bus voltage signal are passed to main control chip 3 by detection module 2, if bus current
Value is more than electric current secure threshold, and main control chip 3 exports two same level signals and passes to active short block 4, by electric current
It is discharged by motor, prevents overcurrent and the damage to battery.If bus voltage value is more than voltage security threshold values, main control chip
3 output overvoltage fault-signals, and active short block 4 is passed to, electric current is discharged by motor, protection vehicle safety.Master control
Chip 3 is by its internal direct output drive signal, this is signally attached to the control terminal of actively short-circuit drive module, and examines simultaneously
Consider under 3 failure mode of main control chip；Active short block 4 is the executing agency of actively short circuit, and is considered simultaneously in master control core
This function is executed under piece 3DSP failure conditions.
The bus current detection module 1 includes Hall current sensor, the voltage being electrically connected with Hall current sensor
Submodule is followed, and the first differential amplification submodule being electrically connected with voltage follow submodule；The Hall current sensor
For acquiring the current signal on busbar in real time, exports, put successively through voltage follow submodule, the first difference in the form of a voltage
Main control chip 3 is inputed to after big submodule processing.
As shown in Fig. 2, in the present embodiment, 1 physical circuit of bus current detection module is as follows：Including Hall current sensor
IA, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, capacitance C1, capacitance
C2, capacitance C3, capacitance C4, amplifier U1（Its model AD8544ARZ）, amplifier U2（Its model AD8544ARZ）With open
Close diode D1（Its model BAS70-04）, the connection relation of each component is as follows：
The Hall current sensor IA is connect through resistance R1 with 3 feet of amplifier U1, and Hall current sensor IA is also through resistance
Be grounded after R2, one end of capacitance C1 is connect with 3 feet of amplifier U1, the other end of capacitance C1 ground connection, 2 feet of amplifier U1 with put
1 foot of big device U1 connects, and is grounded after the 4 foot meridian capacitor C2 of amplifier U1, and 1 foot of amplifier U1 is through resistance R3's and amplifier U2
5 feet connect, and 5 feet of amplifier U2 are also grounded after resistance R5, resistance R6 successively, and 6 feet of amplifier U2 are successively through resistance R4, electricity
It being grounded after holding C3,6 feet of amplifier U2 are also connect through resistance R7, resistance R8 with 7 feet of amplifier U2 successively, and the 7 of amplifier U2
Foot is also grounded after resistance R9, capacitance C4 successively, and resistance R9 is connect with the tie point of capacitance C4 with main control chip 3, resistance R9 with
The still 3 feet connection of switching diode D1 of the tie point of capacitance C4.It can real-time and accurately be examined by bus current detection module 1
The current value on busbar is measured, to make a decision foundation.
Hall current sensor IA in the present embodiment is the HAH1DR500-S of LEM companies, input current range（-500A
<I<500A）, output voltage range 0.5V-4.5V.Hall current sensor IA acquires current signal IA in real time, with the shape of voltage
Formula exports, and realizes voltage follow by amplifier U1, this is to eliminate noise jamming.Follow up amplifier U2 believes IA_COMP
It number realizes differential amplification with reference voltage signal I_VREF, and then voltage signal is passed into main control chip 3.Detecting busbar
After overcurrent, main control chip 3 exports two same level signals, and passes to active short block 4, and electric current is released by motor
It puts, prevents overcurrent and the damage to battery.
In the present embodiment, the busbar voltage detection module include partial pressure submodule, with partial pressure submodule be electrically connected every
Off-chip piece, and the second differential amplification submodule for being electrically connected with isolating chip；The high pressure that the partial pressure submodule will be acquired
Direct current is converted to voltage dc, and carries out electrical isolation by isolating chip and input to the second differential amplification submodule, passes through
Main control chip 3 is inputed to after the processing of second differential amplification submodule.
As shown in figure 3, the physical circuit of the busbar voltage detection module is：Including resistance R10, resistance R11, resistance
R12, resistance R13, resistance R14, resistance R15, resistance R16, resistance R17, resistance R18, resistance R19, resistance R20, resistance R21,
Capacitance C5, capacitance C6, capacitance C7, capacitance C8, capacitance C9, isolating chip A1（Its model ACPL-C87AT）, amplifier U3（Its
Model AD8542A）With switching diode D2（Its model BAS70-04）, the connection relation of each component is as follows：
Resistance R10 successively through resistance R11, resistance R12, resistance R13, resistance R14, resistance R15, resistance R16, resistance R17 with every
2 feet of off-chip piece A1 connect, and the tie point of resistance R16 and resistance R17 are grounded after resistance R18, one end ground connection of capacitance C5, electricity
The other end for holding C5 is connect with 2 feet of switching diode D2, one end ground connection of capacitance C6, the other end and isolating chip of capacitance C6
1 foot of A1 connects, and 3 feet, 4 feet and the 5 feet ground connection of isolating chip A1,7 feet of isolating chip A1 are through resistance R19's and amplifier U3
3 feet connect, and 6 feet of isolating chip A1 are connect through resistance R20 with 2 feet of amplifier U3, and the 8 foot meridian capacitor C7 of isolating chip A1 connect
3 feet on ground, amplifier U3 are also grounded after resistance R21, and capacitance C8 is in parallel with resistance R21, and 2 feet of amplifier U3 are also through resistance
R22 is connect with 1 foot of amplifier U3, and capacitance C9 is in parallel with resistance R22.It can be accurate in real time by busbar voltage detection module 2
Ground detects the voltage value on busbar, to make a decision foundation.
The case where since overvoltage belongs to catastrophe failure, and having the risk of overcurrent, therefore also detecting busbar voltage, in busbar
In the case of overvoltage, circuit executes actively short circuit, protects battery.
By building resistor voltage divider circuit, high voltage direct current is transformed into low-voltage direct, master control is sent by analog input pin
Thus chip 3, main control chip 3 calculate the actual value of busbar voltage.
Busbar voltage detection module 2, high voltage direct current are converted to voltage dc by bleeder circuit, by high voltage direct current,
Again by the electrical isolation of isolating chip, the interference of high-tension circuit is reduced to minimum, and isolating chip ACPL-C87AT is used
Input and output 1：1 relationship, differential amplifier circuit realize the corresponding output relation of high voltage and low-voltage, and then by voltage signal
It is sent into control chip, this realizes the correspondence of resistance and voltage, due to the operating voltage of chip primarily to impedance matching
No more than 3.3V, therefore（By being calculated）Output voltage is not higher than the operating voltage 3.3V of controller.
In the present embodiment, as shown in figure 4, the active short block 4 includes resistance R21, resistance R22, resistance R23, electricity
Hinder R24, resistance R25, resistance R26, resistance R27, resistance R28, capacitance C10, capacitance C11, capacitance C12, capacitance C13 and door
U900, NAND gate U901A, NAND gate U901B, NAND gate U901C, NAND gate U901D, NAND gate U902A, NAND gate U902B,
NAND gate U902C, NAND gate U902D and triode Q, the connection relation of each component are as follows：
1 foot of the NAND gate U901A is connected with 9 feet of NAND gate U901C, and 1 foot and NAND gate of NAND gate U901A
Tie point between 9 feet of U901C is connect with main control chip 3, and 2 feet of NAND gate U901A are connected with 5 feet of NAND gate U901B,
And the tie point between 2 feet of NAND gate U901A and 5 feet of NAND gate U901B is connect with main control chip 3.The NOT gate U901A
1 foot connect with 3.3V power supplys through resistance R23,2 feet of NOT gate U901A are also grounded after resistance R22,3 feet of NOT gate U901A point
It is not connect with 10 feet of NAND gate U901C, the connection of 4 feet of NAND gate U901B, 8 feet and the NAND gate U901D of NAND gate U901C
The connection of 12 feet, 6 feet of NAND gate U901B connect with 13 feet of NAND gate U901D, 11 feet of NAND gate U901D and with door
6 feet of U900 connect, and are connect with main control chip 3 with 1 foot of door U900.It is grounded with after the 5 foot meridian capacitor C13 of door U900, with door
4 feet of U900 after resistance R27, capacitance C12 through being grounded successively, the tie point between resistance R27 and capacitance C12 and NAND gate
12 feet of U902D connect, and 13 feet of NAND gate U902D are connected with 3 feet of NAND gate U902A, 1 foot of NAND gate U902A and with
11 feet of NOT gate U902D connect, and 11 feet of NAND gate U902D are also connected with 4 feet of NAND gate U902B and 5 feet respectively, NAND gate
6 feet of U902B connect with upper three bridging, and 6 feet of NAND gate U902D are also grounded after resistance R28, capacitance C10, resistance R28 and electricity
The tie point for holding C10 is also connected with 9 feet of NAND gate U902C and 10 feet respectively, and 8 feet of NAND gate U902C connect with lower three bridging；
2 feet of NOT gate U902A are connect with 3 feet of triode Q, and a termination VCC of resistance R26, the other end of resistance R26 is through capacitance C11
After be grounded, and the tie point of resistance R26 and capacitance C11 are connect with 3 feet of triode Q, and 1 foot of triode Q is followed by through resistance R25
Ground, the 2 feet ground connection of triode Q.
Working principle of the present invention is as follows：
（One）When main control chip 3（DSP）When normal work：
（a）When the bus current ＞ electric current secure thresholds detected, DSP sends same level signal（That is ASC-SG1 and ASC-
The size of SG2 is identical, and polarity is identical）, HV-OVER is high level at this time, after logical operation, obtains three bridges driving letter
Number it is high level, lower three bridge drive signals are low level signal, execute actively short circuit.
（b）When busbar voltage ＞ voltage security threshold values, i.e., bus overvoltage when, DSP sends identical high level signal, passes through
After logical operation, show that three bridge drive signals are high level, lower three bridge drive signals are low level, execute actively short circuit.
（c）When non-overcurrent and not over-pressed, DSP sends identical low level signal, at this point, HV-OVER is low level, warp
After crossing logical operation, show that three bridge drive signals are low level, lower three bridge drive signals are high level, execute actively short circuit.
（Two）When main control chip 3（DSP）When failure：
（a）When bus current ＞ electric current secure thresholds, i.e. overcurrent, DSP sends out the identical high level fault signal of two signals
ASC_SG1, ASC_SG2, it is also likely to be low level that HV-OVER, which is high level, at this time, after logical operation, obtains Shang Sanqiao
Drive signal is high level, and lower three bridge drive signals are low level signal, executes actively short circuit.
（b）When only busbar voltage ＞ voltage securities threshold value, i.e. overvoltage, DSP sends out same level signal（ASC-SG1
It is high level with ASC-SG2, or is low level）, HV-OVER is that high level obtains three after logical operation at this time
Bridge drive signal is high level, and lower three bridge drive signals are low level signal, execute actively short circuit.
（c）Non- overcurrent, when also not over-pressed, DSP sends out identical low level fault signal ASC_SG1, the ASC_ of two signals
SG2, HV-OVER is low level at this time, after logical operation, show that three bridge drive signals are low level, lower three bridges driving
Signal is high level, does not execute actively short circuit.
Claims (6)
1. a kind of protection control circuit of automobile power drive system, it is characterised in that：Including bus current detection module（1）, it is female
Line voltage detection module（2）, main control chip（3）With active short block（4）；
Bus current detection module（1）, busbar voltage detection module（2）Respectively with main control chip（3）Connection, main control chip（3）
With active short block（4）Connection, active short block（4）Respectively under upper three bridge and motor driver of motor driver
Three bridgings connect；
The bus current detection module（1）For detecting bus current signal and being transferred to main control chip（3）；
The busbar voltage detection module（2）For detecting bus voltage signal and being transferred to main control chip（3）；
It is more than electric current secure threshold in response to bus current valueOrWhen bus voltage value is more than voltage security threshold values, the active is short
Road module（4）Execute actively short circuit.
2. the protection control circuit of automobile power drive system according to claim 1, it is characterised in that：The bus current
Detection module（1）Including Hall current sensor, the voltage follow submodule being electrically connected with Hall current sensor, and with electricity
Pressure follows the first differential amplification submodule that submodule is electrically connected；The Hall current sensor for acquiring on busbar in real time
Current signal exports in the form of a voltage, is inputed to after voltage follow submodule, the processing of the first differential amplification submodule successively
Main control chip（3）.
3. the protection control circuit of automobile power drive system according to claim 1 or 2, it is characterised in that：The busbar
Voltage detection module（2）Including dividing submodule, the isolating chip being electrically connected with partial pressure submodule, and be electrically connected with isolating chip
The the second differential amplification submodule connect；
The high voltage direct current acquired is converted to voltage dc by the partial pressure submodule, and by isolating chip carry out electrically every
From and input to the second differential amplification submodule, input to main control chip after the processing of the second differential amplification submodule（3）.
4. the protection control circuit of automobile power drive system according to claim 2, it is characterised in that：The bus current
Detection module（1）Including Hall current sensor IA, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, electricity
Hinder R7, resistance R8, resistance R9, capacitance C1, capacitance C2, capacitance C3, capacitance C4, amplifier U1, amplifier U2 and switching diode
D1；The Hall current sensor IA is connect through resistance R1 with 3 feet of amplifier U1, and Hall current sensor IA is also through resistance R2
After be grounded, one end of capacitance C1 is connect with 3 feet of amplifier U1, the other end of capacitance C1 ground connection, 2 feet and the amplification of amplifier U1
1 foot of device U1 connects, and is grounded after the 4 foot meridian capacitor C2 of amplifier U1, and 1 foot of amplifier U1 is through the 5 of resistance R3 and amplifier U2
Foot connects, and 5 feet of amplifier U2 are also grounded after resistance R5, resistance R6 successively, and 6 feet of amplifier U2 are successively through resistance R4, electricity
It being grounded after holding C3,6 feet of amplifier U2 are also connect through resistance R7, resistance R8 with 7 feet of amplifier U2 successively, and the 7 of amplifier U2
Foot is also grounded after resistance R9, capacitance C4 successively, the tie point and main control chip of resistance R9 and capacitance C4（3）Connection, resistance R9
Still 3 feet of switching diode D1 are connect with the tie point of capacitance C4.
5. the protection control circuit of automobile power drive system according to claim 4, it is characterised in that：The busbar voltage
Detection module include resistance R10, resistance R11, resistance R12, resistance R13, resistance R14, resistance R15, resistance R16, resistance R17,
Resistance R18, resistance R19, resistance R20, resistance R21, capacitance C5, capacitance C6, capacitance C7, capacitance C8, capacitance C9, isolating chip
A1, amplifier U3 and switching diode D2；
Resistance R10 successively through resistance R11, resistance R12, resistance R13, resistance R14, resistance R15, resistance R16, resistance R17 with every
2 feet of off-chip piece A1 connect, and the tie point of resistance R16 and resistance R17 are grounded after resistance R18, one end ground connection of capacitance C5, electricity
The other end for holding C5 is connect with 2 feet of switching diode D2, one end ground connection of capacitance C6, the other end and isolating chip of capacitance C6
1 foot of A1 connects, and 3 feet, 4 feet and the 5 feet ground connection of isolating chip A1,7 feet of isolating chip A1 are through resistance R19's and amplifier U3
3 feet connect, and 6 feet of isolating chip A1 are connect through resistance R20 with 2 feet of amplifier U3, and the 8 foot meridian capacitor C7 of isolating chip A1 connect
3 feet on ground, amplifier U3 are also grounded after resistance R21, and capacitance C8 is in parallel with resistance R21, and 2 feet of amplifier U3 are also through resistance
R22 is connect with 1 foot of amplifier U3, and capacitance C9 is in parallel with resistance R22.
6. the protection control circuit of the automobile power drive system according to claims 1 or 2 or 4 or 5, it is characterised in that：Institute
State active short block（4）Including resistance R21, resistance R22, resistance R23, resistance R24, resistance R25, resistance R26, resistance R27,
Resistance R28, capacitance C10, capacitance C11, capacitance C12, capacitance C13, with door U900, NAND gate U901A, NAND gate U901B, with it is non-
Door U901C, NAND gate U901D, NAND gate U902A, NAND gate U902B, NAND gate U902C, NAND gate U902D and triode Q；
1 foot of the NAND gate U901A is connected with 9 feet of NAND gate U901C, and 1 foot and NAND gate of NAND gate U901A
Tie point and main control chip between 9 feet of U901C（3）Connection, 2 feet of NAND gate U901A and 5 feet of NAND gate U901B connect
It connects, and tie point and main control chip between 2 feet of NAND gate U901A and 5 feet of NAND gate U901B（3）Connection；
1 foot of the NOT gate U901A is connect through resistance R23 with 3.3V power supplys, and 2 feet of NOT gate U901A are also followed by through resistance R22
Ground, 3 feet of NOT gate U901A are connect with 10 feet of NAND gate U901C respectively, 4 feet of NAND gate U901B connect, NAND gate U901C
8 feet connect with 12 feet of NAND gate U901D, 6 feet of NAND gate U901B are connected with 13 feet of NAND gate U901D, NAND gate
11 feet of U901D and connect, and be grounded after the 5 foot meridian capacitor C13 of door U900 with 6 feet of door U900, with 4 feet of door U900 pass through according to
Secondary to be grounded after resistance R27, capacitance C12,12 feet of tie point and NAND gate U902D between resistance R27 and capacitance C12 connect
It connects, 13 feet of NAND gate U902D are connected with 3 feet of NAND gate U902A, 1 foot of NAND gate U902A and the 11 of NAND gate U902D
Foot connects, and 11 feet of NAND gate U902D also connects with 4 feet of NAND gate U902B and 5 feet respectively, 6 feet of NAND gate U902B and
Upper three bridging connects, and 6 feet of NAND gate U902D are also grounded after resistance R28, capacitance C10, the tie point of resistance R28 and capacitance C10
It is also connected respectively with 9 feet of NAND gate U902C and 10 feet, 8 feet of NAND gate U902C connect with lower three bridging；The 2 of NOT gate U902A
Foot is connect with 3 feet of triode Q, and a termination VCC of resistance R26, the other end of resistance R26 is grounded after capacitance C11, and resistance
The tie point of R26 and capacitance C11 are connect with 3 feet of triode Q, and 1 foot of triode Q is grounded after resistance R25, and the 2 of triode Q
Foot is grounded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810288756.9A CN108521118A (en) | 2018-03-30 | 2018-03-30 | The protection control circuit of automobile power drive system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810288756.9A CN108521118A (en) | 2018-03-30 | 2018-03-30 | The protection control circuit of automobile power drive system |
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| Publication Number | Publication Date |
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| CN108521118A true CN108521118A (en) | 2018-09-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810288756.9A Pending CN108521118A (en) | 2018-03-30 | 2018-03-30 | The protection control circuit of automobile power drive system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109687808A (en) * | 2018-12-03 | 2019-04-26 | 浙江零跑科技有限公司 | A kind of permanent magnet synchronous motor end short circuit protection system based on electric voltage feed forward |
| CN109742732A (en) * | 2018-12-03 | 2019-05-10 | 浙江零跑科技有限公司 | A kind of permanent magnet synchronous motor cut-offs formula end short-circuit protection method |
| CN111619351A (en) * | 2019-02-28 | 2020-09-04 | 北京新能源汽车股份有限公司 | Safety state control method and device and automobile |
| CN111830423A (en) * | 2020-06-24 | 2020-10-27 | 东风电驱动系统有限公司 | Isolated high-voltage sampling circuit |
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| CN203481800U (en) * | 2013-09-29 | 2014-03-12 | 长春工业大学 | Protective device for motor inverter for new energy vehicle |
| CN104442405A (en) * | 2014-12-04 | 2015-03-25 | 安徽巨一自动化装备有限公司 | Active short-circuit protection circuit for electric drive system of electric automobile |
| CN105680417A (en) * | 2016-03-31 | 2016-06-15 | 安徽江淮汽车股份有限公司 | Active short circuit control circuit and control method |
| CN107121630A (en) * | 2017-05-25 | 2017-09-01 | 合肥巨动力系统有限公司 | The self checking method and device of a kind of active short-circuit protection circuit of electric machine control system |
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| CN203481800U (en) * | 2013-09-29 | 2014-03-12 | 长春工业大学 | Protective device for motor inverter for new energy vehicle |
| CN104442405A (en) * | 2014-12-04 | 2015-03-25 | 安徽巨一自动化装备有限公司 | Active short-circuit protection circuit for electric drive system of electric automobile |
| CN105680417A (en) * | 2016-03-31 | 2016-06-15 | 安徽江淮汽车股份有限公司 | Active short circuit control circuit and control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109687808A (en) * | 2018-12-03 | 2019-04-26 | 浙江零跑科技有限公司 | A kind of permanent magnet synchronous motor end short circuit protection system based on electric voltage feed forward |
| CN109742732A (en) * | 2018-12-03 | 2019-05-10 | 浙江零跑科技有限公司 | A kind of permanent magnet synchronous motor cut-offs formula end short-circuit protection method |
| CN109687808B (en) * | 2018-12-03 | 2020-07-07 | 浙江零跑科技有限公司 | Permanent magnet synchronous motor end short-circuit protection system based on voltage feedforward |
| CN111619351A (en) * | 2019-02-28 | 2020-09-04 | 北京新能源汽车股份有限公司 | Safety state control method and device and automobile |
| CN111619351B (en) * | 2019-02-28 | 2022-04-12 | 北京新能源汽车股份有限公司 | Safety state control method and device and automobile |
| CN111830423A (en) * | 2020-06-24 | 2020-10-27 | 东风电驱动系统有限公司 | Isolated high-voltage sampling circuit |
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