CN209545139U - A kind of overvoltage protection of pure electric automobile efficient permanent magnet motor - Google Patents
A kind of overvoltage protection of pure electric automobile efficient permanent magnet motor Download PDFInfo
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- CN209545139U CN209545139U CN201921136367.0U CN201921136367U CN209545139U CN 209545139 U CN209545139 U CN 209545139U CN 201921136367 U CN201921136367 U CN 201921136367U CN 209545139 U CN209545139 U CN 209545139U
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- protective module
- inverter
- overvoltage protective
- overvoltage
- driving plate
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Abstract
The utility model discloses a kind of overvoltage protection of pure electric automobile efficient permanent magnet motor; the overvoltage protection includes DC power supply, electric machine controller, inverter, overvoltage protective module and magneto, and the inverter and overvoltage protective module are arranged inside the electric machine controller；The inverter direct-flow side connects anode and the cathode both ends of DC power supply by electric wire, and exchange side is connected through electric wire with magneto；The overvoltage protective module includes overvoltage protective module IGBT and driving plate; the overvoltage protective module IGBT connects the connecting terminal that inverter end exchanges side by copper bar; the driving plate of overvoltage protective module is connected by electrical wiring to the anode and cathode of inverter, and the control panel being arranged in inverter is connected to by signal wire.Protective device detection accuracy is high for this, is swift in response, is highly-safe, is compact-sized, plays an important role to the protection of magneto and associated devices.
Description
Technical field
The utility model relates to motor control assembly field, more particularly a kind of pure electric automobile efficient permanent magnet motor
Overvoltage protection.
Background technique
Magneto is because having the series of advantages such as high efficiency, high torque (HT), high power density and good speed adjustment features, in pure electricity
It is used widely in electrical automobile field.There is counter electromotive force in magneto, motor speed is faster at runtime, motor it is anti-electronic
Gesture voltage is higher.Magneto is run under high speed conditions, if back-emf voltage is excessively high without quick when failure
Measure is effectively protected, it is possible to damage to equipment, high electromotive force magneto (generates high within the scope of low-intensity magnetic field
Synchronizing voltage) safe operation need over-voltage protection module.
Utility model content
Function of overhigh counter electromotive force when breaking down to overcome magneto to run at high speed and be possible to the damage caused by device
Bad, the utility model provides a kind of over-voltage protection module of pure electric automobile efficient permanent magnet motor.
To achieve the goals above, the utility model provides the following technical solutions:
A kind of over-voltage protection module of pure electric automobile efficient permanent magnet motor, including it is DC power supply, electric machine controller, inverse
Become device, overvoltage protective module, magneto, inverter and overvoltage protective module are mounted on inside electric machine controller.Inverter is straight
Anode and cathode both ends that side connects DC power supply by electric wire are flowed, exchange side is connected through electric wire with magneto.The over-voltage
Protective module includes overvoltage protective module IGBT and driving plate, and the overvoltage protective module IGBT being installed on inside electric machine controller is logical
The connecting terminal of copper bar connection inverter end exchange side is crossed, overvoltage protective module driving plate is being connected by electrical wiring to inverter just
Pole and cathode are connected to the control panel of inverter by signal wire.When there is 24V to control power supply, overvoltage protective module can pass through
Inverter control plate carries out software control, can also be by DC voltage measure loop hardware controls IGBT itself；In no control
When power supply, overvoltage protective module can also carry out control conducting or pass to IGBT by the electricity that capacitor in driving circuit itself stores
It is disconnected, and achieve the purpose that overvoltage protection.
The technical program detection accuracy is high, is swift in response, is highly-safe, is compact-sized, to magneto and associated devices
Protection play an important role.
As a preferred solution, the overvoltage protective module IGBT include overvoltage protective module IGBT1, IGBT2,
IGBT3, overvoltage protective module IGBT1, IGBT2, IGBT3 pass through respective connecting terminal 1 through copper bar and inverter ac respectively
L1, L2, L3 are respectively connected with for side；The respective connecting terminal 2 of IGBT1, IGBT2, IGBT3 is shorted through copper bar to be connected；IGBT1,
Respective 3,5 terminal of IGBT2, IGBT3 is separately fixed at 1/2/3/4/5/6 end on overvoltage protective module terminal plate by bolt
On son, this terminal plate is connected by signal line with 31 b1 of driving plate ~ b6 of overvoltage protective module.
As a preferred solution, the driving plate includes being sequentially connected the operational amplifier circuit connect, control circuit, driving electricity
Road and voltage detecting circuit；One end a1 ~ a52 of overvoltage protective module driving plate is through master control connection and inverter control plate phase
Even, driving plate a1 ~ a52 other end of overvoltage protective module is connected with the operational amplifier circuit being set in driving plate；Overvoltage protection mould
Cathode and anode of 1/2 one end of block driving plate respectively through electric wire connection inverter DC master row, overvoltage protective module driving
1/2 other end of plate is connected after series and parallel compensated resistance capacitor with the voltage detecting circuit being set in driving plate.If electric
The DC bus-bar voltage that pressure detection circuit detects is more than the threshold value of setting itself, driving circuit will be made to overvoltage protective module
3 interior road IGBT carry out control conducting, to be shorted 3 circuitry phases.If DC bus-bar voltage is more than inverter control plate software
The voltage value of setting, control panel will by the operational amplifier circuit in the driving plate of winding displacement of communication a1 ~ a52 and overvoltage protective module to
Control circuit sends signal, controls driving circuit, is respectively turned on overvoltage protective module IGBT1, IGBT2, IGBT3, thus short
Connect 3 phase alternating current circuits of electric machine controller.
1. overvoltage protective module can carry out software control by inverter control plate when there is 24V to control power supply, can also lead to
Cross the DC bus-bar voltage measure loop hardware controls IGBT of itself；2. when without control power supply, if winding back emf voltage
The voltage for feeding back DC loop is more than the hardware threshold of voltage detection circuit setting in overvoltage protective module, overvoltage protective module
Control on or off can be carried out to IGBT by the electricity that capacitor in driving circuit itself stores, and reach the mesh of overvoltage protection
, more meet vehicle safety requirements.
If the voltage of winding back emf Voltage Feedback to DC loop is excessively high: winding back emf Voltage Feedback to direct current returns
If the voltage on road is excessively high: being 1. more than software setting value, can be sent by inverter control plate to overvoltage protective module driving plate
Signal carries out control conducting to IGBT1, IGBT2, IGBT3 to be shorted motor three-phase circuit；2. being set more than voltage detecting circuit
The hardware threshold set, the electricity that overvoltage protective module can be stored by capacitor in driving circuit itself control overvoltage protective module
IGBT1, IGBT2, IGBT3 gate pole trigger and then control the three-phase IGBT conducting of overvoltage protective module, to be shorted motor
3 phase alternating current circuits of controller, convert electric energy to thermal energy using motor three-phase windings and consume excess energy, prevent bus
Overtension causes electrical equipment to damage.
Inverter powers on when running for the first time, can carry out pulse-triggered inspection to overvoltage protective module by inverter control plate
It surveys, to judge whether its work is normal.
The utility model has the beneficial effects that:
The utility model realizes the protection to inverter and motor by over-voltage protection module, and together with inverter
Be mounted in electric machine controller, not only can with software control, can also be in power supply out of hand with the side of hardware passive triggering
Formula is detected and is realized, is had many advantages, such as that detection accuracy is high, is swift in response, is compact-sized, highly-safe, more meets pure electric vehicle
Safety requirements.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the overvoltage protection of the utility model；
Fig. 2 is the circuit diagram of the overvoltage protection of the utility model.
Specific embodiment
With reference to the accompanying drawing and embodiment, detailed elaboration is made to the specific embodiment of the utility model.
The utility model provides a kind of overvoltage protection of pure electric automobile efficient permanent magnet motor, as shown in Figure 1,
The overvoltage protection includes DC power supply 1, electric machine controller 4, inverter 2, overvoltage protective module 3, magneto 5,
Inverter 2 and overvoltage protective module 3 are mounted on inside electric machine controller 4.2 DC side of inverter connects DC power supply by electric wire
1 anode and cathode both ends, exchange side are connected through electric wire with magneto 5.The overvoltage protection being installed on inside electric machine controller
Module I GBT connects the connecting terminal that 2 end of inverter exchanges side by copper bar, and overvoltage protective module driving plate 31 is connected by electric wire
It is connected to the anode and cathode of inverter 2, the control panel 21 of inverter is connected to by signal wire.
As shown in Figure 2 overvoltage protective module IGBT1, IGBT2, IGBT3 pass through respectively respective connecting terminal 1 through copper bar and
Inverter 2 exchanges side L1, L2, L3 and is respectively connected with；The respective connecting terminal 2 of IGBT1, IGBT2, IGBT3 is shorted through copper bar to be connected；
Respective 3,5 terminal of IGBT1, IGBT2, IGBT3 is separately fixed at 1/2/ on overvoltage protective module terminal plate 32 by bolt
On 3/4/5/6 terminal, this terminal plate 32 is connected by signal line with 31 b1 of driving plate ~ b6 of overvoltage protective module 3；Over-voltage
One end 31 a1 of driving plate ~ a52 of protective module 3 is connected through master control connection with inverter control plate 21, overvoltage protective module
3 31 a1 of driving plate ~ a52 other end is connected with the operational amplifier circuit being set in driving plate；The driving plate of overvoltage protective module 3
Cathode and anode of 31 1/2 one end respectively through electric wire connection 2 DC master row of inverter, the driving plate 31 of overvoltage protective module 3
1/2 other end is connected after series and parallel compensated resistance capacitor with the voltage detecting circuit 33 being set in driving plate 31.If electric
The DC bus-bar voltage that pressure detection circuit 33 detects is more than the threshold value of setting itself, and driving circuit 36 will be made to overvoltage protection
3 road IGBT in module carry out control conducting, to be shorted 3 circuitry phases.If DC bus-bar voltage is more than inverter control plate
The voltage value of 21 softwares setting, control panel 21 will be by the driving plate 31 of winding displacement of communication a1 ~ a52 and overvoltage protective module 3
Operational amplifier circuit 34 to control circuit 35 send signal, control driving circuit 36, make overvoltage protective module IGBT1, IGBT2,
IGBT3 is respectively turned on, to be shorted 3 phase alternating current circuits of electric machine controller 4.
1. overvoltage protective module can carry out software control by inverter control plate when there is 24V to control power supply, can also lead to
Cross the DC bus-bar voltage measure loop hardware controls IGBT of itself；2. when without control power supply, if winding back emf voltage
The voltage for feeding back DC loop is more than the hardware threshold of voltage detection circuit setting in overvoltage protective module, overvoltage protective module
Control on or off can be carried out to IGBT by the electricity that capacitor in driving circuit itself stores, and reach the mesh of overvoltage protection
, more meet vehicle safety requirements.
If the voltage of winding back emf Voltage Feedback to DC loop is excessively high: it is 1. more than software setting value, it can be by inverse
Become device control panel and control conducting is carried out to be shorted to IGBT1, IGBT2, IGBT3 to overvoltage protective module driving plate transmission signal
Motor three-phase circuit；2. being more than the hardware threshold of voltage detecting circuit setting, overvoltage protective module can pass through driving circuit itself
Electricity control overvoltage protective module IGBT1, IGBT2, IGBT3 gate pole of interior capacitor storage trigger and then controls overvoltage protection
The three-phase IGBT of module 3 is connected, to be shorted 3 phase alternating current circuits of electric machine controller 4, is turned electric energy using motor three-phase windings
It changes thermal energy into consume excess energy, prevents busbar voltage is excessively high from damaging.
Inverter powers on when running for the first time, can carry out pulse-triggered inspection to overvoltage protective module by inverter control plate
It surveys, to judge whether its work is normal.
Figure 1 above, a kind of over-voltage protection module of pure electric automobile efficient permanent magnet motor is that this is practical new shown in 2
The specific embodiment of type has embodied the utility model in essence feature and progress, needs can be used according to actual, at this
Under the enlightenment of utility model, the equivalent modifications of shape, structure etc., the column in the protection scope of this programme are carried out to it.
Claims (3)
1. a kind of overvoltage protection of pure electric automobile efficient permanent magnet motor, the overvoltage protection includes direct current
Source, electric machine controller, inverter, overvoltage protective module and magneto, which is characterized in that the inverter and overvoltage protection mould
Block is arranged inside the electric machine controller；The inverter direct-flow side connects the anode and cathode two of DC power supply by electric wire
End, exchange side are connected through electric wire with magneto；The overvoltage protective module includes overvoltage protective module IGBT and driving plate, institute
It states overvoltage protective module IGBT and the connecting terminal that inverter end exchanges side is connected by copper bar, the driving plate of overvoltage protective module is logical
The anode and cathode for being wired to inverter are crossed, the control panel being arranged in inverter is connected to by signal wire.
2. the overvoltage protection of pure electric automobile efficient permanent magnet motor according to claim 1, which is characterized in that institute
Stating overvoltage protective module IGBT includes overvoltage protective module IGBT1, IGBT2, IGBT3, the overvoltage protective module IGBT1,
IGBT2, IGBT3 pass through respective connecting terminal 1 respectively and are respectively connected with through copper bar and inverter ac side L1, L2, L3；IGBT1,
The respective connecting terminal 2 of IGBT2, IGBT3 is shorted through copper bar to be connected；Respective 3,5 terminal of IGBT1, IGBT2, IGBT3 is solid respectively
It is scheduled on 1/2/3/4/5/6 terminal on overvoltage protective module terminal plate, the overvoltage protective module terminal plate is arranged by signal
Line is connected with driving plate b1 ~ b6 of overvoltage protective module.
3. the overvoltage protection of pure electric automobile efficient permanent magnet motor according to claim 1, which is characterized in that institute
Stating driving plate includes being sequentially connected the operational amplifier circuit connect, control circuit, driving circuit and voltage detecting circuit；Overvoltage protective module
The one end driving plate a1 ~ a52 be connected through master control connection with the control panel of inverter, driving plate a1 ~ a52 of overvoltage protective module
The other end is connected with the operational amplifier circuit being set in driving plate；1/2 one end of driving plate of overvoltage protective module connects through electric wire respectively
The cathode and anode of inverter DC master row are connect, 1/2 other end of driving plate of overvoltage protective module passes through series and parallel compensated resistance and electricity
Rong Hou is connected with the voltage detecting circuit being set in driving plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921136367.0U CN209545139U (en) | 2019-07-19 | 2019-07-19 | A kind of overvoltage protection of pure electric automobile efficient permanent magnet motor |
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|---|---|---|---|
| CN201921136367.0U CN209545139U (en) | 2019-07-19 | 2019-07-19 | A kind of overvoltage protection of pure electric automobile efficient permanent magnet motor |
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| CN209545139U true CN209545139U (en) | 2019-10-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112769099A (en) * | 2021-03-01 | 2021-05-07 | 上海节卡机器人科技有限公司 | Robot braking method and device, robot and computer storage medium |
-
2019
- 2019-07-19 CN CN201921136367.0U patent/CN209545139U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112769099A (en) * | 2021-03-01 | 2021-05-07 | 上海节卡机器人科技有限公司 | Robot braking method and device, robot and computer storage medium |
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