CN105711424B - The fault detection method and device of vehicle high voltage system - Google Patents
The fault detection method and device of vehicle high voltage system Download PDFInfo
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- CN105711424B CN105711424B CN201610041896.7A CN201610041896A CN105711424B CN 105711424 B CN105711424 B CN 105711424B CN 201610041896 A CN201610041896 A CN 201610041896A CN 105711424 B CN105711424 B CN 105711424B
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- 238000001514 detection method Methods 0.000 title claims abstract description 90
- 238000000034 method Methods 0.000 claims abstract description 14
- 210000001367 artery Anatomy 0.000 claims 1
- 210000003462 vein Anatomy 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 230000005611 electricity Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 4
- 238000002788 crimping Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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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
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- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a kind of fault detection method of vehicle high voltage system and devices, belong to automobile technical field.The fault detection method method includes: whether the preinstalled circuit unit inside the detection high-pressure system breaks down；When the preinstalled circuit unit breaks down, the power output of vehicle is cut off；Fault indication signal is exported, the fault indication signal is used to indicate the unit to break down in the preinstalled circuit unit.The present invention solves the problems, such as that the efficiency of the fault detection method debugging of prior art middle-and-high voltage system is lower, the effect for improving the efficiency of debugging is realized, for detecting the failure of vehicle high voltage system.
Description
Technical field
The present invention relates to automobile technical field, in particular to the fault detection method and device of a kind of vehicle high voltage system.
Background technique
Raising with automobile (such as electric car) to power demand, using power accumulator and motor as power device
The operating voltage of automobile has been up to several hectovolts, the voltage class of the operating voltage far beyond the safety voltage level of human body, when
When the high-pressure system of automobile breaks down and do not detect, electric machine controller will continue to execute the power output of vehicle, automobile meeting
High-voltage safety is led to the problem of, and then influences the security of the lives and property of driver and passenger.Therefore, it is necessary to a kind of high-pressure systems
Fault detection method detects high-pressure system, prevents automobile from leading to the problem of uncontrolled high-voltage safety.
There is a kind of fault detection method of high-pressure system in the prior art, this method passes through to the whole mechanical of high-pressure system
Structure is monitored, and whether detection high-pressure system breaks down, and when detecting that high-pressure system breaks down, this method can be taken
Corresponding counter-measure such as cuts off the power output of vehicle, to prevent automobile from leading to the problem of uncontrolled high-voltage safety.
Since the above process is monitored to the integral mechanical structure of high-pressure system, it is able to detect whether high-pressure system goes out
Existing failure, but can not determine the specific location of failure, thus can not rapidly removing faults, therefore, the efficiency of debugging
It is lower.
Summary of the invention
Efficiency in order to solve the problems, such as the fault detection method debugging of prior art middle-and-high voltage system is lower, this hair
It is bright to provide the fault detection method and device of a kind of vehicle high voltage system.The technical solution is as follows:
In a first aspect, providing a kind of fault detection method of vehicle high voltage system, which comprises
Detect whether the preinstalled circuit unit inside the high-pressure system breaks down；
When the preinstalled circuit unit breaks down, the power output of vehicle is cut off；
Fault indication signal is exported, the fault indication signal, which is used to indicate, to break down in the preinstalled circuit unit
Unit.
Optionally, the preinstalled circuit unit is high-voltage connecting wire box loop unit, inside the detection high-pressure system
Preinstalled circuit unit whether break down, comprising:
Pass through the first signal of the default unit output of high-voltage connecting wire box loop unit acquisition first；
Acquire the second signal of the high-voltage connecting wire box loop unit output；
Obtain the level state of first signal and the level state of the second signal；
The high-voltage connecting wire box is detected according to the level state of first signal and the level state of the second signal
Whether loop unit breaks down.
Optionally, the preinstalled circuit unit is high input voltage loop unit, inside the detection high-pressure system
Whether preinstalled circuit unit breaks down, comprising:
Pass through the third signal of the default unit output of high input voltage loop unit acquisition second；
Acquire the fourth signal of the high input voltage loop unit output；
Obtain the level state of the third signal and the level state of the fourth signal；
The high input voltage ring is detected according to the level state of the third signal and the level state of the fourth signal
Whether road unit breaks down.
Optionally, described when the preinstalled circuit unit breaks down, cut off the power output of vehicle, comprising:
When the preinstalled circuit unit breaks down, the first low electricity is exported to logic control element by entire car controller
Ordinary mail number；
Three phase inverter bridge is controlled according to first low level signal by the logic control element and exports the second low electricity
Ordinary mail number closes the three phase inverter bridge to cut off the power output of the vehicle, and the three phase inverter bridge is for controlling motor
Controller executes the power output of the vehicle.
Optionally, the preinstalled circuit unit is motor three-phase high-voltage unit, inside the detection high-pressure system
Whether preinstalled circuit unit breaks down, comprising:
Detect whether the motor three-phase high-voltage unit breaks down by electric machine controller.
Second aspect, provides a kind of fault detection means of vehicle high voltage system, and described device includes:
Detection unit, for detecting whether the preinstalled circuit unit inside the high-pressure system breaks down；
Cutting unit, for cutting off the power output of vehicle when the preinstalled circuit unit breaks down；
Output unit, for exporting fault indication signal, the fault indication signal is used to indicate the preinstalled circuit list
The unit to break down in member.
Optionally, the preinstalled circuit unit is high-voltage connecting wire box loop unit, the detection unit, comprising:
First acquisition module, for passing through the first of the default unit output of high-voltage connecting wire box loop unit acquisition first
Signal；
Second acquisition module, for acquiring the second signal of the high-voltage connecting wire box loop unit output；
First obtains module, for obtaining the level state of first signal and the level state of the second signal；
First detection module, for being examined according to the level state of first signal and the level state of the second signal
Survey whether the high-voltage connecting wire box loop unit breaks down.
Optionally, the preinstalled circuit unit is high input voltage loop unit, the detection unit, comprising:
Third acquisition module, for being believed by the third of the default unit output of high input voltage loop unit acquisition second
Number；
4th acquisition module, for acquiring the fourth signal of the high input voltage loop unit output；
Second obtains module, for obtaining the level state of the third signal and the level state of the fourth signal；
Second detection module, for being examined according to the level state of the third signal and the level state of the fourth signal
Survey whether the high input voltage loop unit breaks down.
Optionally, the cutting unit, comprising:
Output module is used for when the preinstalled circuit unit breaks down, by entire car controller to logic control list
Member the first low level signal of output；
Control module, for controlling three phase inverter bridge according to first low level signal by the logic control element
The second low level signal is exported, closes the three phase inverter bridge to cut off the power output of the vehicle, the three phase inverter bridge
The power output of the vehicle is executed for controlling electric machine controller.
Optionally, the preinstalled circuit unit is motor three-phase high-voltage unit, the detection unit, comprising:
Third detection module, for detecting whether the motor three-phase high-voltage unit breaks down by electric machine controller.
The present invention provides a kind of fault detection method of vehicle high voltage system and device, which can be
When preinstalled circuit unit inside high-pressure system breaks down, the power output of vehicle is cut off, and exports and is used to indicate default electricity
The fault indication signal of the unit to break down in the unit of road can determine that high-pressure system breaks down compared to the prior art
Specific location, so as to rapidly removing faults, this improves the efficiency of debugging.
It should be understood that above general description and following detailed description be only it is exemplary and explanatory, not
It can the limitation present invention.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1-1 is a kind of flow chart of the fault detection method of vehicle high voltage system provided in an embodiment of the present invention；
Fig. 1-2 be in Fig. 1-1 illustrated embodiment it is a kind of detection high-pressure system inside preinstalled circuit unit whether occur therefore
The flow chart of barrier；
Fig. 1-3 is whether the preinstalled circuit unit in Fig. 1-1 illustrated embodiment inside another detection high-pressure system occurs
The flow chart of failure；
Fig. 1-4 is the flow chart that the power output of vehicle is cut off in Fig. 1-1 illustrated embodiment；
Fig. 1-5 is that the present embodiments relate to the structural schematic diagrams of the high-pressure system arrived；
Fig. 2-1 is a kind of structural schematic diagram of the fault detection means of vehicle high voltage system provided in an embodiment of the present invention；
Fig. 2-2 is a kind of structural schematic diagram of detection unit in Fig. 2-1 illustrated embodiment；
Fig. 2-3 is the structural schematic diagram of another detection unit in Fig. 2-1 illustrated embodiment；
Fig. 2-4 is the structural schematic diagram of cutting unit in Fig. 2-1 illustrated embodiment；
Fig. 2-5 is the structural schematic diagram of another detection unit in Fig. 2-1 illustrated embodiment.
Through the above attached drawings, it has been shown that the specific embodiment of the present invention will be hereinafter described in more detail.These attached drawings
It is not intended to limit the scope of the inventive concept in any manner with verbal description, but is by referring to specific embodiments
Those skilled in the art illustrate idea of the invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
The embodiment of the invention provides a kind of fault detection methods of vehicle high voltage system, as Figure 1-1, this method packet
It includes:
Whether the preinstalled circuit unit inside step 101, detection high-pressure system breaks down.
Step 102, preinstalled circuit unit break down when, cut off the power output of vehicle.
Step 103, output fault indication signal, the fault indication signal are used to indicate in preinstalled circuit unit and break down
Unit.
In conclusion the fault detection method of vehicle high voltage system provided in an embodiment of the present invention, it can be in high-pressure system
When internal preinstalled circuit unit breaks down, the power output of vehicle is cut off, and export and be used to indicate in preinstalled circuit unit
The fault indication signal of the unit of failure can determine the specific position that high-pressure system breaks down compared to the prior art
It sets, so as to rapidly removing faults, this improves the efficiency of debugging.
Optionally, the indicating fault of the unit to break down in preinstalled circuit unit is used to indicate by indicating module output
Signal.The indicating module can be light emitting diode (English: Light Emitting Diode；Referred to as: LED) lamp or buzzing
Device.When preinstalled circuit unit breaks down, corresponding LED light is bright or corresponding buzzer issues alarm, to indicate to occur
The unit of failure.
Optionally, preinstalled circuit unit is high-voltage connecting wire box loop unit, correspondingly, step 101 is as shown in Figs. 1-2, it can
To include:
Step 1011 passes through the first signal of the default unit output of high-voltage connecting wire box loop unit acquisition first.
First default unit can include concatenation for the either component outside high-pressure system, high-voltage connecting wire box loop unit
Terminal box output inserter interlocking module and terminal box take off lid protective module, and terminal box output inserter interlocking module and terminal box take off lid
Protective module is connected by two terminals with external other component.It is adopted at a terminal by high-voltage connecting wire box loop unit
Collect the signal for the first external component output connecting with the terminal, which is the first signal.
Step 1012, the second signal of acquisition high-voltage connecting wire box loop unit output.
The second signal of high-voltage connecting wire box loop unit output is acquired at another terminal by the second external component.
The level state of step 1013, the level state for obtaining the first signal and second signal.
The level state and step 1012 of the first signal acquired by the first external detection component retrieval step 1011 are adopted
The level state of the second signal of collection, in order to which subsequent first external detection component is according to the level state of the first signal and second
Whether the level state monitoring high-voltage connecting wire box loop unit of signal breaks down.
Step 1014 detects high-voltage connecting wire box loop according to the level state of the first signal and the level state of second signal
Whether unit breaks down.
Specifically, can judge the level state of the first signal and the level of second signal by the first external detection component
Whether state is identical, if the level state of the first signal is identical with the level state of second signal, illustrates high-voltage connecting wire box
Loop unit is without failure, if the level state of the first signal and the level state of second signal be not identical, illustrates height
Wire box loop unit is crimped to break down.
Optionally, preinstalled circuit unit is high input voltage loop unit, correspondingly, step 101 is as shown in Figure 1-3, can be with
Include:
Step 1015 passes through the third signal of the default unit output of high input voltage loop unit acquisition second.
Second default unit can be the either component outside high-pressure system, and high input voltage loop unit is for carrying out high pressure
The interlocking of loop is inputted, high input voltage loop unit is connect by two terminals with external battery power feeds.High input voltage loop
Unit is connected by two terminals (including first terminal and Second terminal) with external other component.Outside first terminal and third
The connection of portion's component, Second terminal are connect with the 4th external component.Is acquired at first terminal by high input voltage loop unit
The signal of three external components output, the signal are third signal.
Step 1016, the fourth signal of acquisition high input voltage loop unit output.
The signal of high input voltage loop unit output is acquired at Second terminal by the 4th external component, which is the
Four signals.
The level state of step 1017, the level state for obtaining third signal and fourth signal.
The level state and step 1016 of the third signal acquired by the second external detection component retrieval step 1015 are adopted
The level state of the fourth signal of collection, in order to which subsequent second external detection component is according to the level state of third signal and the 4th
Whether the level state detection high input voltage loop unit of signal breaks down.
Step 1018 detects high input voltage loop list according to the level state of third signal and the level state of fourth signal
Whether member breaks down.
Specifically, can judge the level state of third signal and the level of fourth signal by the second external detection component
Whether state is identical, if the level state of third signal is identical with the level state of fourth signal, illustrates high input voltage ring
Road unit is without failure, if the level state of third signal and the level state of fourth signal be not identical, illustrates high pressure
Loop unit is inputted to break down.
Optionally, step 102 as shown in Figs 1-4, may include:
Step 1021, when preinstalled circuit unit breaks down, by entire car controller to logic control element output the
One low level signal.
The pulse width tune for enable signal and the main control chip output that logic control element is used to export entire car controller
System (English: Pulse Width Modulation；Referred to as: PWM) wave signal carries out logical operation, generates corresponding three-phase inversion
Bridge (such as six unit inverter bridge of three-phase) driving signal.When preinstalled circuit unit breaks down, control entire car controller output
Enable signal is low level signal, which is the first low level signal.
Step 1022 controls three phase inverter bridge the second low electricity of output according to the first low level signal by logic control element
Ordinary mail number closes three phase inverter bridge to cut off the power output of vehicle, and the three phase inverter bridge is for controlling electric machine controller execution
The power output of vehicle.
Preinstalled circuit unit break down when, entire car controller to logic control element export be the first low level believe
Number, the PWM wave signal that logic control element exports first low level signal and main control chip carries out logical operation, generates one
A three phase inverter bridge driving signal, and the three phase inverter bridge driving signal is sent to three phase inverter bridge, thus three contraries of control
Become bridge and export the second low level signal, and then close three phase inverter bridge to cut off the power output of vehicle, guarantees vehicle and the person
Safety.
Optionally, preinstalled circuit unit is motor three-phase high-voltage unit, correspondingly, step 101 may include:
Detect whether motor three-phase high-voltage unit breaks down by electric machine controller.
Motor three-phase high-voltage unit includes that the motor three-phase output loop interlocking module of concatenation and motor three-phase take off lid protection
Module.Specifically, can detect whether motor three-phase high-voltage unit event occurs inside electric machine controller by electric machine controller
Barrier.The detection process can refer to the prior art, and the embodiment of the present invention repeats no more this.
It should be added that the high-voltage safety strategy of the fault detection method of vehicle high voltage system in the prior art
The interlocking of integral mechanical structure is usually carried out, which is the mode based on software signal to realize, and is not examined sufficiently
Failure these two aspects content, this hair can be generated by considering the fast-response of electric car and the software itself for detecting high-pressure system
The fault detection method for the vehicle high voltage system that bright embodiment provides is capable of power drive system high voltage component to electric car
Insecurity factor is detected in time, can be made in time to the fortuitous event that electric car occurs in the process of moving and be answered countermeasure
Slightly.Circuit unit in the high-pressure system of electric car is first divided into several groups by the fault detection method, then to the electricity in every group
Road unit carries out the interlocking detection of high-pressure-loop, can be quick by the fault detection method when high-pressure system breaks down
The unit to break down is easily obtained, and then can quickly take corresponding measure, is debugged.Meanwhile passing through full-vehicle control
Micro-control unit (English: Microcontroller Unit of the device to electric machine controller；Referred to as: MCU) send an enabled letter
Number, when catastrophe failure occurs for automobile, this method can close three phase inverter bridge to cut off the power output of vehicle.And then guarantee
The safety of vehicle and the person, improves the control performance and reliability of vehicle.What the fault detection method can also occur in automobile
Three phase inverter bridge is controlled when other emergencies to control the power output that electric machine controller stops vehicle
As shown in Figs. 1-5, the present embodiments relate to the structural schematic diagram of the high-pressure system arrived, which be can wrap
Include high-voltage connecting wire box loop unit 510, high input voltage loop unit 520, motor three-phase high-voltage unit 530 and logic control element
540。
Wherein, high-voltage connecting wire box loop unit 510 includes the terminal box output inserter interlocking module 511 and terminal box of concatenation
Lid protective module 512 is taken off, terminal box output inserter interlocking module 511 and terminal box take off lid protective module 512 and pass through two terminals
(i.e. terminal a and terminal b) is connected with external other component, and terminal a is connect with the first external component 513, outside terminal b and second
Portion's component 514 connects, and the detection work of the connection of the high-voltage connecting wire box loop unit route can be in external either component
It carries out.The first signal for acquiring the output of the first external component 513 at terminal a by high-voltage connecting wire box loop unit 510, passes through
Second external component 514 acquires the second signal of the output of high-voltage connecting wire box loop unit 510 at terminal b, then passes through outside first
Portion's detection part 515 obtains the level state of the first signal and the level state of second signal, and according to the level of the first signal
Whether the level state of state and second signal detection high-voltage connecting wire box loop unit 510 breaks down.First external detection portion
Part 515 is provided with the first indicating module 001, which is used to detect height in the first external detection component 515
When crimping the failure of wire box loop unit 510, fault indication signal is exported.
High input voltage loop unit 520 is used to carry out the interlocking of high input voltage loop, and high input voltage loop unit 520 passes through
Terminal c and terminal d is connect with external battery power feeds, and in Fig. 1-5, HV+ is battery power feeds anode, and HV- is battery power feeds cathode,
High input voltage loop unit 520 is connect by terminal e and terminal f with external other component.Terminal e and third external component
521 connections, terminal f are connect with the 4th external component 522.The detection work of the route connection of high input voltage loop unit 520 can
To be carried out on battery management unit.It is defeated that third external component 521 is acquired at terminal e by high input voltage loop unit 520
Third signal out acquires the 4th letter of the output of high input voltage loop unit 520 by the 4th external component 522 at terminal f
Number, then the level state of third signal and the level state of fourth signal are obtained by the second external detection component 523, and according to
Whether the level state of third signal and the level state detection high input voltage loop unit 520 of fourth signal break down.The
Two external detection components 523 are provided with the second indicating module 002, which is used in the second external detection portion
When part 523 detects that high input voltage loop unit 520 breaks down, fault indication signal is exported.
Motor three-phase high-voltage unit 530 include concatenation motor three-phase output loop interlocking module (Fig. 1-5 is not drawn into) and
Motor three-phase is taken off lid protective module (Fig. 1-5 is not drawn into), and whether detection motor three-phase high-voltage unit 530 breaks down can be in electricity
It is carried out inside machine controller 550.In Fig. 1-5,531 be motor, and A indicates the A phase of motor 531, and B indicates the B phase of motor 531, C table
Show the C phase of motor 531.The power supply of 550 external+5V (volt) of electric machine controller.Electric machine controller 550 is provided with third indicating module
(being not drawn into Fig. 1-5), the third indicating module are used for when motor three-phase high-voltage unit 530 breaks down, and output failure refers to
Show signal.
What the enable signal and main control chip 570 that logic control element 540 is used to export entire car controller 560 exported
PWM wave signal carries out logical operation, generates corresponding three phase inverter bridge (such as six unit inverter bridge of three-phase) driving signal, and should
Three phase inverter bridge driving signal is exported to three phase inverter bridge 580, and when guaranteeing that high-pressure system breaks down, three phase inverter bridge 580 is defeated
Second low level signal out, three phase inverter bridge 580 are closed, and then cut off the power output of vehicle, guarantee vehicle and the person
Safety.
The high-pressure-loop that the fault detection method of the vehicle high voltage system passes through the preinstalled circuit unit inside high-pressure system
Lid protection is interlocked and taken off, makes vehicle in the case where high-pressure insert loosens or opens, safety cut-off high-pressure energy, and pass through logic
Control unit carries out logical operation to the PWM wave signal of enable signal and main control chip generation that entire car controller exports, so that
For automobile when catastrophe failure occurs, safety shutdown power device, that is, three phase inverter bridge is while defeated to cut off the power output of vehicle
Be out of order indication signal, in order to rapidly removing faults, guarantees the safety of vehicle and the person, improve vehicle control performance and can
By property.
The security strategy of the fault detection method are as follows: in automobile normal course of operation, pass through fault detection method reality
When receive high-pressure system outside component output signal, detect high-pressure system inside preinstalled circuit unit whether occur therefore
Barrier, when the preinstalled circuit unit inside high-pressure system is without failure, control automobile is normally continued to run；When in high-pressure system
When the preinstalled circuit unit in portion breaks down, fault type can be first determined, if the failure is failure (the i.e. event of general type
Barrier harm is smaller), then the power output of vehicle is reduced, if the failure is catastrophe failure, cuts off the power output of vehicle.
Specifically, the first low level signal can be exported to logic control element by entire car controller, then pass through logic control element
Three phase inverter bridge is controlled according to the first low level signal and exports the second low level signal, closes three phase inverter bridge to cut off vehicle
Power output.Fault indication signal is exported simultaneously, in order to can be with rapidly removing faults.This way it is ensured that vehicle and the person
Safety, improves the control performance and reliability of vehicle.
In conclusion the fault detection method of vehicle high voltage system provided in an embodiment of the present invention, it can be in high-pressure system
When internal preinstalled circuit unit breaks down, the power output of vehicle is cut off, and export and be used to indicate in preinstalled circuit unit
The fault indication signal of the unit of failure can determine the specific position that high-pressure system breaks down compared to the prior art
It sets, so as to rapidly removing faults, this improves the efficiency of debugging.
The embodiment of the invention provides a kind of fault detection means of vehicle high voltage system, as shown in Fig. 2-1, the device packet
It includes:
Detection unit 210, for detecting whether the preinstalled circuit unit inside high-pressure system breaks down.
Cutting unit 220, for cutting off the power output of vehicle when preinstalled circuit unit breaks down.
Output unit 230, for exporting fault indication signal, fault indication signal is used to indicate in preinstalled circuit unit
The unit of existing failure.
In conclusion the fault detection means of vehicle high voltage system provided in an embodiment of the present invention, it can be in high-pressure system
When internal preinstalled circuit unit breaks down, the power output of vehicle is cut off, and export and be used to indicate in preinstalled circuit unit
The fault indication signal of the unit of failure can determine the specific position that high-pressure system breaks down compared to the prior art
It sets, so as to rapidly removing faults, this improves the efficiency of debugging.
Optionally, preinstalled circuit unit is high-voltage connecting wire box loop unit, correspondingly, as shown in Fig. 2-2, detection unit
210, may include:
First acquisition module 211, for passing through the first of the default unit output of high-voltage connecting wire box loop unit acquisition first
Signal.
Second acquisition module 212, for acquiring the second signal of high-voltage connecting wire box loop unit output；
First obtains module 213, for obtaining the level state of the first signal and the level state of second signal.
First detection module 214 is high for being detected according to the level state of the first signal and the level state of second signal
Whether crimping wire box loop unit breaks down.
Optionally, preinstalled circuit unit is high input voltage loop unit, correspondingly, as Figure 2-3, detection unit 210,
May include:
Third acquisition module 215, for the third letter by the default unit output of high input voltage loop unit acquisition second
Number.
4th acquisition module 216, for acquiring the fourth signal of high input voltage loop unit output.
Second obtains module 217, for obtaining the level state of third signal and the level state of fourth signal.
Second detection module 218 is high for being detected according to the level state of third signal and the level state of fourth signal
Whether pressure input loop unit breaks down.
Optionally, as in Figure 2-4, cutting unit 220 may include:
Output module 221 is used for when preinstalled circuit unit breaks down, by entire car controller to logic control element
Export the first low level signal.
Control module 222, for controlling three phase inverter bridge output according to the first low level signal by logic control element
Second low level signal closes three phase inverter bridge to cut off the power output of vehicle, and three phase inverter bridge is for controlling motor control
The power output of device execution vehicle.
Optionally, preinstalled circuit unit is motor three-phase high-voltage unit, correspondingly, as shown in Figure 2-5, detection unit 210,
May include:
Third detection module 219, for detecting whether motor three-phase high-voltage unit breaks down by electric machine controller.
In conclusion the fault detection means of vehicle high voltage system provided in an embodiment of the present invention, it can be in high-pressure system
When internal preinstalled circuit unit breaks down, the power output of vehicle is cut off, and export and be used to indicate in preinstalled circuit unit
The fault indication signal of the unit of failure can determine the specific position that high-pressure system breaks down compared to the prior art
It sets, so as to rapidly removing faults, this improves the efficiency of debugging.
It is apparent to those skilled in the art that for convenience and simplicity of description, the device of foregoing description
It with the specific work process of unit, can refer to corresponding processes in the foregoing method embodiment, details are not described herein.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (4)
1. a kind of fault detection method of vehicle high voltage system, which is characterized in that the described method includes:
Detect whether the preinstalled circuit unit inside the high-pressure system breaks down；
When the preinstalled circuit unit breaks down, the first low level letter is exported to logic control element by entire car controller
Number；
The pulse width modulation (PWM) exported by the logic control element according to first low level signal and main control chip
Wave signal carries out logical operation, generates a three phase inverter bridge driving signal, and the three phase inverter bridge driving signal is sent
To three phase inverter bridge, controls the three phase inverter bridge and export the second low level signal, close the three phase inverter bridge with cutting
The power output of vehicle, the three phase inverter bridge is for controlling the power output that electric machine controller executes the vehicle；
Fault indication signal is exported, the fault indication signal is used to indicate the list to break down in the preinstalled circuit unit
Member；
Wherein, when the preinstalled circuit unit is high-voltage connecting wire box loop unit, inside the detection high-pressure system
Whether preinstalled circuit unit breaks down, comprising:
Pass through the first signal of the default unit output of high-voltage connecting wire box loop unit acquisition first, the first default unit
For the first external component outside high-pressure system；
The second letter of the high-voltage connecting wire box loop unit output is acquired by the second external component outside the high-pressure system
Number；
Pass through the level state of the first signal described in the first external detection component retrieval and the level state of the second signal；
The high-voltage connecting wire box loop is detected according to the level state of first signal and the level state of the second signal
Whether unit breaks down；
Wherein, the high-voltage connecting wire box loop unit includes that the terminal box output inserter interlocking module of concatenation and terminal box are taken off lid and protected
Module is protected, the terminal box output inserter interlocking module is connected with the described first default unit, and the terminal box takes off lid protection mould
Block is connected with second external component；
Wherein, pre- inside the detection high-pressure system when the preinstalled circuit unit is high input voltage loop unit
If whether circuit unit breaks down, comprising:
By the third signal of the default unit output of high input voltage loop unit acquisition second, the second default unit is
Third external component outside the high-pressure system；
The fourth signal of the high input voltage loop unit output is acquired by the 4th external component outside the high-pressure system；
Pass through the level state of third signal described in the second external detection component retrieval and the level state of the fourth signal；
The high input voltage loop list is detected according to the level state of the third signal and the level state of the fourth signal
Whether member breaks down.
2. the method according to claim 1, wherein the preinstalled circuit unit be motor three-phase high-voltage unit,
Whether the preinstalled circuit unit inside the detection high-pressure system breaks down, comprising:
Detect whether the motor three-phase high-voltage unit breaks down by electric machine controller.
3. a kind of fault detection means of vehicle high voltage system, which is characterized in that described device includes:
Detection unit, for detecting whether the preinstalled circuit unit inside the high-pressure system breaks down；
Cutting unit, for cutting off the power output of vehicle when the preinstalled circuit unit breaks down；
Output unit, for exporting fault indication signal, the fault indication signal is used to indicate in the preinstalled circuit unit
The unit of failure；
Wherein, when the preinstalled circuit unit is high-voltage connecting wire box loop unit, the detection unit, comprising:
First acquisition module, for the first letter by the default unit output of high-voltage connecting wire box loop unit acquisition first
Number, the first default unit is the first external component outside high-pressure system；
Second acquisition module, for acquiring the high-voltage connecting wire box loop by the second external component outside the high-pressure system
The second signal of unit output；
First obtains module, for the level state and described second by the first signal described in the first external detection component retrieval
The level state of signal；
First detection module, for detecting institute according to the level state of first signal and the level state of the second signal
State whether high-voltage connecting wire box loop unit breaks down；
Wherein, the high-voltage connecting wire box loop unit includes that the terminal box output inserter interlocking module of concatenation and terminal box are taken off lid and protected
Module is protected, the terminal box output inserter interlocking module is connected with the described first default unit, and the terminal box takes off lid protection mould
Block is connected with second external component；
Wherein, when the preinstalled circuit unit is high input voltage loop unit, the detection unit, comprising:
Third acquisition module, the third signal for being exported by the default unit of high input voltage loop unit acquisition second,
The second default unit is the third external component outside the high-pressure system；
4th acquisition module, for acquiring the high input voltage loop list by the 4th external component outside the high-pressure system
The fourth signal of member output；
Second obtains module, for the level state and the described 4th by third signal described in the second external detection component retrieval
The level state of signal；
Second detection module, for detecting institute according to the level state of the third signal and the level state of the fourth signal
State whether high input voltage loop unit breaks down；
Wherein, the cutting unit, comprising: output module, for passing through vehicle when the preinstalled circuit unit breaks down
Controller exports the first low level signal to logic control element；
Control module, the arteries and veins for being exported by the logic control element according to first low level signal and main control chip
It rushes width modulated PWM wave signal and carries out logical operation, generate a three phase inverter bridge driving signal, and by the three phase inverter bridge
Driving signal is sent to three phase inverter bridge, controls the three phase inverter bridge and exports the second low level signal, closes three contrary
Become bridge to cut off the power output of the vehicle, the three phase inverter bridge is for controlling the function that electric machine controller executes the vehicle
Rate output.
4. device according to claim 3, which is characterized in that the preinstalled circuit unit is motor three-phase high-voltage unit,
The detection unit, comprising:
Third detection module, for detecting whether the motor three-phase high-voltage unit breaks down by electric machine controller.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610041896.7A CN105711424B (en) | 2016-01-20 | 2016-01-20 | The fault detection method and device of vehicle high voltage system |
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| CN201610041896.7A CN105711424B (en) | 2016-01-20 | 2016-01-20 | The fault detection method and device of vehicle high voltage system |
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| CN108333527B (en) * | 2018-02-06 | 2020-02-14 | 中航锂电技术研究院有限公司 | Battery management system loop interlocking and slave control address setting method |
| CN112046289B (en) * | 2020-08-24 | 2022-04-12 | 奇瑞新能源汽车股份有限公司 | Electric vehicle, drive control system thereof and fault detection control method |
| CN113110368A (en) * | 2021-02-26 | 2021-07-13 | 苏州海格新能源汽车电控系统科技有限公司 | Intelligent integrated motor controller test method and system |
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| JP4134719B2 (en) * | 2002-12-27 | 2008-08-20 | トヨタ自動車株式会社 | Power supply system shutdown control method |
| JP2010104175A (en) * | 2008-10-24 | 2010-05-06 | Panasonic Corp | Fault diagnosis circuit, power supply device, and fault diagnosis method |
| KR101470227B1 (en) * | 2013-10-28 | 2014-12-05 | 현대자동차주식회사 | Battery safety device of vehicle and method detecting trouble of the same |
| CN103723045A (en) * | 2014-02-20 | 2014-04-16 | 合肥国骋新能源汽车技术有限公司 | Monitoring and alarming device for electric vehicle high-voltage power distribution systems |
| CN105150856B (en) * | 2015-09-11 | 2017-12-01 | 安徽江淮汽车集团股份有限公司 | A kind of high-pressure system trouble-shooter and method |
| CN105109347B (en) * | 2015-09-18 | 2018-05-18 | 惠州市亿能电子有限公司 | Electric automobile high-voltage electrification circuit and its control method |
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