CN105501066B - The detecting system and method for electric automobile mesohigh loop fault - Google Patents
The detecting system and method for electric automobile mesohigh loop fault Download PDFInfo
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- CN105501066B CN105501066B CN201510869816.2A CN201510869816A CN105501066B CN 105501066 B CN105501066 B CN 105501066B CN 201510869816 A CN201510869816 A CN 201510869816A CN 105501066 B CN105501066 B CN 105501066B
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- 238000001514 detection method Methods 0.000 claims abstract description 25
- 230000001681 protective effect Effects 0.000 claims description 59
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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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Abstract
The invention discloses a kind of detecting system and method for electric automobile mesohigh loop fault, belong to electronic technology field.The detecting system includes：High-pressure-loop and diagnostic equipment；Multiple high-pressure-loops are connected by the low pressure shorting stub of high-voltage connector with diagnostic equipment；High-pressure-loop includes multiple high pressure annexes and multiple low resistances, one high pressure annex one low resistance of correspondence, the resistance of multiple low resistances meets the first preparatory condition, multiple high pressure annexes are in parallel successively, the corresponding low resistance of first high pressure annex is arranged on the two ends of the high-voltage connector of the first high-pressure insert, and the first high pressure annex is any high pressure annex in multiple high pressure annexes；Diagnostic equipment is used for the low tension resistance for detecting high-pressure-loop, and is determined according to the low tension resistance in high-pressure-loop with the presence or absence of the high pressure annex broken down, and the high pressure annex that determination is broken down.The present invention can improve detection efficiency.
Description
Technical field
The present invention relates to electronic technology field, more particularly to a kind of detecting system of electric automobile mesohigh loop fault and
Method.
Background technology
Current human society with economic sustainable development by global energy and environmental pollution the problems such as stumbled it is steady
Fixed step, the exploitation electric automobile such as pure electric automobile or plug-in hybrid-power automobile is that automobile industry is currently the most important
One of task.But high-pressure-loop is contained in electric automobile, high-pressure-loop includes multiple high pressure annexes, multiple high pressure annexes
In each high pressure annex two ends connection high-voltage line.Therefore, when electric automobile breaks down, it is necessary first to detect high compression ring
Whether road breaks down, and in the event of failure, takes high pressure action to ensure the personal safety of user.
At present, when user wants detection high-pressure-loop failure, the high pressure that can only be connected in parallel on universal meter in high-pressure-loop is attached
On part, whether detection universal meter turns on, if universal meter is not turned on, determines the high pressure accessories malfunctions.
During the present invention is realized, inventor has found that prior art at least has problems with：
Because high-pressure-loop includes multiple high pressure annexes, user detects high pressure annex by universal meter one by one, wastes
Labour, and detection efficiency is low.
The content of the invention
In order to solve problem of the prior art, the embodiments of the invention provide a kind of electric automobile mesohigh loop fault
Detecting system and method.The technical scheme is as follows：
A kind of detecting system of electric automobile mesohigh loop fault, the detecting system includes：High-pressure-loop and diagnosis
Instrument；
The multiple high-pressure-loop is connected by the low pressure shorting stub of high-voltage connector with the diagnostic equipment；
The high-pressure-loop includes multiple high pressure annexes and multiple low resistances, high pressure annex one low tension of correspondence
Resistance, the resistance of the multiple low resistance meets the first preparatory condition, and first preparatory condition is：The multiple low resistance
In each low resistance resistance it is unequal, and the first resistance set includes one or more of the multiple low resistance
The resistance of low resistance, the second resistance set includes the resistance of one or more of the multiple low resistance low resistance,
The first resistance set and the second resistance set include the resistance of at least one different low resistance, and first resistance
The resistance sum that value set includes and the resistance sum that the second resistance set includes are unequal；
The multiple high pressure annex is in parallel successively, and the corresponding low resistance of the first high pressure annex is arranged on first high pressure
The two ends of the high-voltage connector of plug-in unit, the first high pressure annex is any high pressure annex in the multiple high pressure annex；
The diagnostic equipment is used for the low tension resistance for detecting the high-pressure-loop, and determines institute according to the low tension resistance
State in high-pressure-loop with the presence or absence of the high pressure annex broken down, and the high pressure annex that determination is broken down.
Optionally, the high-pressure-loop also includes：Protective resistance, the resistance of the protective resistance and multiple low resistances
Resistance meets the second preparatory condition, and second preparatory condition is：The resistance of each low resistance in the multiple low resistance
Value is unequal, and the resistance of the resistance of the protective resistance and each low resistance is unequal；And the 3rd resistance set bag
Include the resistance of one or more of the resistance and the multiple low resistance of protective resistance low resistance, the 4th resistance
Set includes the resistance of one or more of the resistance of the protective resistance, and the multiple low resistance low resistance,
The 3rd resistance set and the 4th resistance set include the resistance of at least one different low resistance, and the 3rd resistance
The resistance sum that value set includes and the resistance sum that the 4th resistance set includes are unequal；
The protective resistance is connected in the high-pressure-loop by the low pressure shorting stub of high-voltage connector.
Optionally, first preparatory condition is：The resistance of each low resistance in the multiple low resistance not phase
Deng, and the resistance of the first low resistance is NK, the N and K are the positive number more than 1, and first low resistance is described many
Any low resistance in individual low resistance.
A kind of detection method of electric automobile mesohigh loop fault, methods described includes：
The low tension resistance of high-pressure-loop is detected, the high-pressure-loop includes multiple high pressure annexes and multiple low tensions
Resistance, high pressure annex one low resistance of correspondence, the resistance of the multiple low resistance meets the first preparatory condition, and described the
One preparatory condition is：The resistance of each low resistance in the multiple low resistance is unequal, and the first resistance set includes
The resistance of one or more of the multiple low resistance low resistance, the second resistance set includes the multiple low resistance
One or more of low resistance resistance, the first resistance set and the second resistance set include at least one not
With the resistance of low resistance, and the resistance sum of low resistance that includes of the first resistance set and the second resistance collection
The resistance sum for the low resistance that conjunction includes is unequal；
Determine that the high-pressure-loop whether there is the high pressure annex broken down according to the low tension resistance；
If it does, the high pressure annex for determining to break down according to the low tension resistance.
Optionally, it is described to determine that the high-pressure-loop is attached with the presence or absence of the high pressure broken down according to the low tension resistance
Part, including：
Whether determine the low tension resistance is zero；
If the low tension resistance is not zero, determine there is the high pressure annex broken down in the high-pressure-loop.
Optionally, the high-pressure-loop also includes protective resistance；
It is described to determine that the high-pressure-loop whether there is the high pressure annex broken down, bag according to the low tension resistance
Include：
Determine the low tension resistance whether be the protective resistance resistance；
If the low tension resistance is not the resistance of the protective resistance, determine there is generation event in the high-pressure-loop
The high pressure annex of barrier.
Optionally, the high pressure annex for determining to break down according to the low tension resistance, including：
Determine the corresponding first high pressure annex set of the low tension resistance, the height that the first high pressure annex set includes
The resistance sum of the corresponding low resistance of annex is pressed to be equal to the low tension resistance；
The high pressure annex that the first high pressure annex set includes is defined as the high pressure annex broken down.
Optionally, the high-pressure-loop also includes protective resistance, the resistance of the protective resistance and multiple low resistances
Resistance meets the second preparatory condition, and second preparatory condition is：The resistance of each low resistance in the multiple low resistance
Value is unequal, and the resistance of the resistance of the protective resistance and each low resistance is unequal；And the 3rd resistance set bag
Include the resistance of one or more of the resistance and the multiple low resistance of protective resistance low resistance, the 4th resistance
Set includes the resistance of one or more of the resistance of the protective resistance, and the multiple low resistance low resistance,
The 3rd resistance set and the 4th resistance set include the resistance of at least one different low resistance, and the 3rd resistance
The resistance sum that value set includes and the resistance sum that the 4th resistance set includes are unequal；
The high pressure annex for determining to break down according to the low tension resistance, including：
The resistance for calculating the low tension resistance and the resistance of the protective resistance is poor；
The corresponding second high pressure annex set of the resistance difference is determined, the high pressure that the second high pressure annex set includes is attached
It is poor that the resistance sum of the corresponding low resistance of part is equal to the resistance；
The high pressure annex that the second high pressure annex set includes is defined as the high pressure annex broken down.
Optionally, the corresponding first high pressure annex set of the determination low tension resistance, including：
The corresponding low resistance of each high pressure annex included according to the high-pressure-loop, from low resistance and pair of resistance
In should being related to, the resistance of the corresponding low resistance of each high pressure annex is obtained；
According to the low tension resistance and the resistance of the corresponding low resistance of each high pressure annex, low resistance is determined
Resistance and at least one high pressure annex equal with the low tension resistance；
At least one described high pressure annex is constituted into the first high pressure annex set.
Optionally, before the low tension resistance of the detection high-pressure-loop, in addition to：
The resistance of first preparatory condition is met for each low resistance distribution in the multiple low resistance；
Low resistance resistance corresponding with its is stored in the corresponding relation of low resistance and resistance.
In embodiments of the present invention, multiple low resistances, and a high pressure annex correspondence one are increased in high-pressure-loop
Low resistance, the corresponding low resistance of the first high pressure annex is arranged on the two ends of the high-voltage connector of the first high-pressure insert, first
High pressure annex is any high pressure annex in multiple high pressure annexes；When the first high pressure accessories malfunctions, the first high pressure annex
Corresponding low resistance can be connected in high-pressure-loop；Therefore, diagnostic equipment is used for the low tension resistance for detecting high-pressure-loop, according to
The low tension resistance can be determined with the presence or absence of the high pressure annex broken down in high-pressure-loop, if it does, due to multiple low
The resistance of piezoresistance meets the first preparatory condition, and diagnostic equipment can uniquely determine one or more high pressures according to the low tension resistance
Annex, so as to determine the high pressure annex broken down.The present invention can improve detection efficiency.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, makes required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1-1 is that a kind of result of the detecting system of electric automobile mesohigh loop fault provided in an embodiment of the present invention is shown
It is intended to；
Fig. 1-2 is the result of the detecting system of another electric automobile mesohigh loop fault provided in an embodiment of the present invention
Schematic diagram；
Fig. 1-3 is the result of the detecting system of another electric automobile mesohigh loop fault provided in an embodiment of the present invention
Schematic diagram；
Fig. 1-4 is the result of the detecting system of another electric automobile mesohigh loop fault provided in an embodiment of the present invention
Schematic diagram；
Fig. 2 is a kind of method flow of the detection method of electric automobile mesohigh loop fault provided in an embodiment of the present invention
Figure.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1-1 is a kind of knot of the detecting system of failure of electric automobile mesohigh loop 101 provided in an embodiment of the present invention
Structure schematic diagram, referring to Fig. 1-1, the detecting system includes：High-pressure-loop 101 and diagnostic equipment 102；
Multiple high-pressure-loops 101 are connected by the low pressure shorting stub of high-voltage connector with diagnostic equipment 102；
High-pressure-loop 101 includes multiple high pressure annexes 1011 and multiple low resistances 1012,1011 pairs of a high pressure annex
A low resistance 1012 is answered, multiple high pressure annexes 1011 are sequentially connected in series, the corresponding low resistance of the first high pressure annex 1011
1012 are arranged on the two ends of the high-voltage connector of the first high-pressure insert, and the first high pressure annex 1011 is in multiple high pressure annex 1011
Any high pressure annex 1011；
Diagnostic equipment 102 is used for the low tension resistance for detecting high-pressure-loop 101, and determines high compression ring according to the low tension resistance
With the presence or absence of the high pressure annex 1011 broken down in road 101, and the high pressure annex 1011 that determination is broken down.
In embodiments of the present invention, the resistance of multiple low resistances 1012 meets the first preparatory condition, the first preparatory condition
For：The resistance of each low resistance 1012 in multiple low resistances 1012 is unequal, and the first resistance set is including multiple low
The resistance of one or more of piezoresistance 1012 low resistance 1012, the second resistance set is included in multiple low resistances 1012
One or more low resistances 1012 resistance, the first resistance set and the second resistance set include at least one different low pressure
The resistance of resistance 1012, and the resistance sum of low resistance 1012 that the first resistance set includes in the second resistance set with wrapping
The resistance sum of the low resistance 1012 included is unequal.
For example, high-pressure-loop 101 includes 1012,4 low resistances 1012 of 4 high pressure annexes 1011 and 4 low resistances
R1, R2, R3 and R4 are referred to as, then R1, R2, R3 and R4 can be respectively 100 Ω, 500 Ω, 800 Ω, 1000 Ω.Or R1,
R2, R3 and R4 can be respectively 50 Ω, 100 Ω, 300 Ω, 800 Ω etc..
Further, the first preparatory condition can be unequal for the resistance of each low resistance 1012, and the first low tension
The resistance of resistance 1012 is NK, N and K are the positive number more than 1, and the first low resistance 1012 is appointing in multiple low resistances 1012
One low resistance 1012.
For example, N=2, K are respectively 1, and 2,4,5, then R1, R2, R3 and R4 can be respectively 2 Ω, 4 Ω, 16 Ω, 32 Ω.
Further, in order to which the resistance for improving each low resistance 1012 is poor, the first preparatory condition can be each low pressure
The resistance of resistance 1012 is unequal, and the resistance of the first low resistance 1012 is M*NK, M is the positive integer more than 1；M value can
It is configured and changes with the size of the value according to N, for example, during N=2, M=100；During N=3, M=50；During N=4, M=20
Deng.
For example, N=2, M=100, K are respectively 0,1,2,3, then R1, R2, R3, R4 can be respectively 100 Ω, 200 Ω,
400 Ω, 800 Ω.
Because the corresponding low resistance 1012 of the first high pressure annex 1011 is arranged on the high-voltage connecting of the first high pressure annex 1011
The two ends of plug-in unit, therefore, when failure occurs to loosen or come off etc. for the first high pressure annex 1011, the first 1011 pairs of high pressure annex
The low resistance 1012 answered will be connected in high-pressure-loop 101；When the first high pressure annex 1011 does not loosen or taken off
When the failure such as falling, the corresponding low resistance 1012 of the first high pressure annex 1011 will be short-circuited, then diagnostic equipment 102 is used for according to should
Low tension resistance determines that high-pressure-loop 101 whether there is the high pressure annex 1011 broken down and be specifically as follows：
Diagnostic equipment 102 is used to determine whether the low tension resistance is zero, if the low tension resistance is zero, diagnostic equipment 102
Determine that the high pressure annex 1011 broken down is not present in high-pressure-loop 101；If the low tension resistance is not zero, diagnostic equipment 102
Determine that high-pressure-loop 101 has the high pressure annex 1011 broken down.
Further, because the resistance of multiple low resistances 1012 meets the first preparatory condition, then diagnostic equipment 102 being capable of root
One or more high pressure annexes 1011 are uniquely determined according to the low tension resistance, so as to determine the high pressure annex broken down
1011.Then diagnostic equipment 102 is used to determine that the high pressure annex 1011 that high-pressure-loop 101 breaks down can be：
Diagnostic equipment 102 is used to determine that the corresponding first high pressure annex 1011 of the low tension resistance is gathered, the first high pressure annex
The resistance sum for the corresponding low resistance 1012 of high pressure annex 1011 that 1011 set include is equal to the low tension resistance；By first
High pressure annex 1011 gathers the high pressure annex 1011 included and is defined as the high pressure annex 1011 broken down.
Wherein, diagnostic equipment 102 is used to determine that the corresponding set of first high pressure annex 1011 of the low tension resistance can be：
The corresponding low resistance 1012 of each high pressure annex 1011 that diagnostic equipment 102 includes according to high-pressure-loop 101, from low
In piezoresistance 1012 and the corresponding relation of resistance, the resistance of the corresponding low resistance 1012 of each high pressure annex 1011 is obtained；Root
According to the low tension resistance and the resistance of the corresponding low resistance 1012 of each high pressure annex 1011, the resistance of low resistance 1012 is determined
Value and at least one high pressure annex 1011 equal with the low tension resistance；At least one high pressure annex 1011 is constituted first high
Pressure annex 1011 is gathered.
Diagnostic equipment 102 is additionally operable to distribute the resistance for meeting the first preparatory condition for each low resistance 1012, will be each low
The resistance corresponding with its of piezoresistance 1012 is stored in the corresponding relation of low resistance 1012 and resistance.
For example, R1, R2, R3, R4 can be respectively 100 Ω, 200 Ω, 400 Ω, 800 Ω.Diagnostic equipment 102 determines high compression ring
Whether road 101 breaks down and in the event of failure, it is determined that the result of the high pressure annex 1011 broken down such as table 1 below institute
Show：
Table 1
Wherein, R is the low tension resistance of high-pressure-loop 101 in table 1, × represent that high pressure annex 1011 breaks down, i.e.,
High pressure annex 1011 loosens or come off；√ represents that the grafting of high pressure annex 1011 is normal.
It should be noted that diagnostic equipment 102 can be ammeter, ammeter is used to detect that the electric current of high-pressure-loop 101 is big
It is small, according to the voltage swing of high-pressure-loop 101 and the size of current, calculate the low tension resistance of high-pressure-loop 101.
Further, in order to protect diagnostic equipment 102, referring to Fig. 1-2, high-pressure-loop 101 also includes：Protective resistance 1013,
The resistance of protective resistance 1013 and the resistance of multiple low resistances 1012 are differed；And the resistance of protective resistance 1013 meets second
Preparatory condition, the second preparatory condition is：The resistance of each low resistance 1012 in multiple low resistances 1012 is unequal, protection
The resistance of resistance 1013 and the resistance of each low resistance 1012 are unequal；And the 3rd resistance set include protective resistance 1013
Resistance and one or more of multiple low resistances 1012 low resistance 1012 resistance, the 4th resistance set includes protecting
Protect the resistance of one or more of the resistance of resistance 1013, and multiple low resistances 1012 low resistance 1012, the 3rd resistance
Value set and the 4th resistance set include the resistance of at least one different low resistance 1012, and the 3rd resistance set includes
Resistance sum and the resistance sum that the 4th resistance set includes are unequal.
Protective resistance 1013 is connected in high-pressure-loop 101 by the low pressure shorting stub of high-voltage connector.
For example, R1, R2, R3, R4 can be respectively 100 Ω, 500 Ω, 800 Ω, 1000 Ω.The resistance of protective resistance 1013
Can be 50 Ω, 150 Ω, 250 Ω etc..
Wherein, multiple high pressure annexes 1011 can be any number of high pressure annexes 1011 in electric automobile, for example, multiple
High pressure annex 1011 can be electric machine controller assembly, high-pressure oil pump, high-pressure heater, high-voltage electric compressor etc..Then referring to
Fig. 1-3, one end of diagnostic equipment 102 connects one end of protective resistance 1013, the other end connection motor control of protective resistance 1013
One end of device assembly, the other end of electric machine controller assembly connects one end of high-pressure oil pump, and the other end connection of high-pressure oil pump is high
Press one end of heater, the other end of high-pressure heater connects one end of high-voltage electric compressor, high-voltage electric compressor it is another
One end connects the other end of diagnostic equipment 102.
For example, electric machine controller assembly includes high-tension battery and motor, then referring to Fig. 1-4, one end of diagnostic equipment 102
Connect one end of protective resistance 1013, the other end of protective resistance 1013 connects one end of motor, motor it is another
End connection high-tension battery, the other end of high-tension battery connects one end of high-pressure oil pump, and the other end connection high pressure of high-pressure oil pump adds
One end of hot device, the other end of high-pressure heater connects one end of high-voltage electric compressor, the other end of high-voltage electric compressor
Connect the other end of diagnostic equipment 102.
If high-pressure-loop 101 also includes protective resistance 1013, diagnostic equipment 102 is used to be determined according to the low tension resistance
High-pressure-loop 101 whether there is the high pressure annex 1011 broken down and be specifically as follows：
Diagnostic equipment 102 be used for determine the low tension resistance whether be protective resistance 1013 resistance, if the low resistance
It is worth for the resistance of protective resistance 1013, diagnostic equipment 102 determines that the high pressure annex 1011 broken down is not present in high-pressure-loop 101；
If the low tension resistance is not the resistance of protective resistance 1013, diagnostic equipment 102 determines that high-pressure-loop 101 has what is broken down
High pressure annex 1011.
For example, protective resistance 1013 is 50 Ω, then diagnostic equipment 102 determines whether the low tension resistance is equal to 50 Ω, if
The low tension resistance is equal to 50 Ω, and diagnostic equipment 102 determines that the high pressure annex 1011 broken down is not present in high-pressure-loop 101；Such as
Really the low tension resistance is equal to 50 Ω, and diagnostic equipment 102 determines that high-pressure-loop 101 has the high pressure annex 1011 broken down.
If high-pressure-loop 101 also includes protective resistance 1013, diagnostic equipment 102 is used to determine occur event according to resistance value
The high pressure annex 1011 of barrier is specifically as follows：
The resistance that diagnostic equipment 102 is used to calculate the low tension resistance and the resistance of protective resistance 1013 is poor；Determine the resistance
The corresponding second high pressure annex 1011 of difference is gathered, the corresponding low pressure of high pressure annex 1011 that the set of the second high pressure annex 1011 includes
It is poor that the resistance sum of resistance 1012 is equal to the resistance；The high pressure annex 1011 that second high pressure annex 1011, which is gathered, to be included is defined as
The high pressure annex 1011 broken down.
Wherein, diagnostic equipment 102 is used to determine that the corresponding set of second high pressure annex 1011 of resistance difference is specifically as follows：
Diagnostic equipment 102 is used for the corresponding low resistance 1012 of each high pressure annex 1011 included according to high-pressure-loop 101,
From low resistance 1012 and the corresponding relation of resistance, the resistance of the corresponding low resistance 1012 of each high pressure annex 1011 is obtained
Value；According to the resistance of the corresponding low resistance 1012 of the poor and each high pressure annex 1011 of the resistance, low resistance 1012 is determined
Resistance and at least one high pressure annex 1011 equal with resistance difference；At least one high pressure annex 1011 is constituted into the second high pressure
Annex 1011 is gathered.
For example, R1, R2, R3, R4 can be respectively 100 Ω, 200 Ω, 400 Ω, 800 Ω, the resistance of protective resistance 1013
For 50 Ω.Whether the high-pressure-loop 101 that diagnostic equipment 102 determines breaks down and in the event of failure, it is determined that the height broken down
Press the result of annex 1011 as shown in table 2 below：
Table 2
Wherein, R is the low tension resistance of high-pressure-loop 101 in table 2, × represent that mutual 1 lock in 1 tunnel of high pressure annex ring 01 occurs
Failure, namely high pressure annex 1011 loosen or come off；√ represents that the grafting of high pressure annex 1011 is normal.
It should be noted that Fig. 1-1 to 1-4 in the embodiment of the present invention is the low-voltage circuit of the high pressure annex 1011 of picture
Figure, in the low-voltage circuit figure of high pressure annex, multiple low resistances 1012 are sequentially connected in series.In high-tension line, each high pressure is attached
The two ends connection high-tension line of part 1011, so as to realize that each high pressure annex 1011 is in parallel successively.
In embodiments of the present invention, multiple low resistances, and a high pressure annex correspondence one are increased in high-pressure-loop
Low resistance, the corresponding low resistance of the first high pressure annex is arranged on the two ends of the high-voltage connector of the first high-pressure insert, first
High pressure annex is any high pressure annex in multiple high pressure annexes；When the first high pressure accessories malfunctions, the first high pressure annex
Corresponding low resistance can be connected in high-pressure-loop；Therefore, diagnostic equipment is used for the low tension resistance for detecting high-pressure-loop, according to
The low pressure resistance can be determined with the presence or absence of the high pressure annex broken down in high-pressure-loop, if it does, due to multiple low pressure
The resistance of resistance meets the first preparatory condition, and it is attached that diagnostic equipment can uniquely determine one or more high pressures according to the low tension resistance
Part, so as to determine the high pressure annex broken down.The present invention can improve detection efficiency.
The embodiments of the invention provide a kind of detection method of electric automobile mesohigh loop fault, the detection method is base
In the detection method of the detecting system of above-mentioned electric automobile mesohigh loop fault；The executive agent of this method can be the detection
Diagnostic equipment in system, referring to Fig. 2, wherein, this method includes：
Step 201：The resistance of the first preparatory condition is met for each low resistance distribution in multiple low resistances.
First preparatory condition is：The resistance of each low resistance in multiple low resistances is unequal, and the first resistance collection
Conjunction includes the resistance of one or more of multiple low resistances low resistance, and the second resistance set is included in multiple low resistances
One or more low resistances resistance, the first resistance set and the second resistance set include at least one different low resistance
Resistance, and the resistance sum that includes of the first resistance set and resistance sum that the second resistance set includes are unequal.
First preparatory condition can also be unequal for the resistance of each low resistance in multiple low resistances, and first low
The resistance of piezoresistance is NK, N and K are the positive number more than 1, and the first low resistance is any low tension in multiple low resistances
Resistance.
Then this step can be：For each low resistance in multiple low resistances, N is distributed for the low resistanceK's
Resistance.
For example, N=2, K are respectively 1, and 2,4,5, then R1, R2, R3 and R4 can be respectively 2 Ω, 4 Ω, 16 Ω, 32 Ω.
Further, in order to which the resistance for improving each low resistance is poor, the first preparatory condition can be each low resistance
Resistance it is unequal, and the first low resistance resistance be M*NK, M is the positive integer more than 1；M value can be according to N value
Size is configured and changed, for example, during N=2, M=100；During N=3, M=50；During N=4, M=20 etc..
For example, N=2, M=100, K are respectively 0,1,2,3, then R1, R2, R3, R4 can be respectively 100 Ω, 200 Ω,
400 Ω, 800 Ω.
Step 202：Each low resistance resistance value corresponding with its is stored in low resistance and the corresponding relation of resistance
In.
It should be noted that this step 201 and step 202 only need to perform once, namely in electronic vapour for the first time
Performed once during car mesohigh loop fault, during subsequent detection electric automobile mesohigh loop fault, it is not necessary to perform step
Rapid 201 and 202, directly perform step 203.
Step 203：Detect the low tension resistance of high-pressure-loop.
The low tension resistance of high-pressure-loop is detected by diagnostic equipment, and diagnostic equipment can be ammeter, then and this step can
Think：
The size of current of high-pressure-loop is detected by ammeter, according to the voltage swing of high-pressure-loop and the size of current,
Calculate the resistance value of high-pressure-loop.
Step 204：Determine that the high-pressure-loop whether there is the high pressure annex broken down according to the low tension resistance.
For each high pressure annex in high-pressure-loop, the corresponding low resistance of high pressure annex is arranged on the high pressure annex
High-voltage connector two ends, therefore, when failure occurs to loosen or come off etc. for the high pressure annex, the high pressure annex is corresponding
Low resistance will be connected in high-pressure-loop；When the high pressure annex such as does not loosen or come off at the failure, the high pressure
The corresponding low resistance of annex will be short-circuited, then this step can be：
Whether determine the low tension resistance is zero；If the low tension resistance is not zero, determine there is hair in high-pressure-loop
The high pressure annex of raw failure.If the low tension resistance is zero, determine that the high pressure annex broken down is not present in high-pressure-loop.
Further, in order to protect diagnostic equipment, high-pressure-loop also includes：Protective resistance, the resistance of protective resistance and multiple
The resistance of low resistance is differed；And the resistance of protective resistance meets the second preparatory condition, the second preparatory condition is：Multiple low pressure
The resistance of each low resistance in resistance is unequal, and the resistance of the resistance of protective resistance and each low resistance is unequal；
And the 3rd resistance set including protective resistance resistance and one or more of multiple low resistances low resistance resistance,
4th resistance set includes the resistance of one or more of the resistance of protective resistance, and multiple low resistances low resistance,
3rd resistance set and the 4th resistance set include the resistance of at least one different low resistance, and the 3rd resistance set includes
Resistance sum and resistance sum that the 4th resistance set includes it is unequal.
If high-pressure-loop includes protective resistance, this step can be：
Determine the low tension resistance whether be protective resistance resistance；If the low tension resistance is not the resistance of protective resistance
Value, determines there is the high pressure annex broken down in high-pressure-loop.If the low tension resistance is the resistance of protective resistance, it is determined that
The high pressure annex broken down is not present in high-pressure-loop.
Step 205：If it does, the high pressure annex for determining to break down according to the low tension resistance.
If not including protective resistance in high-pressure-loop, this step can be realized by following first way；If
High-pressure-loop includes protective resistance, then this step can be realized by the following second way.
For the first implementation, this step can specifically be realized by following steps (1) to (2), including：
(1)：Determine the corresponding first high pressure annex set of the low tension resistance, the high pressure that the first high pressure annex set includes
The resistance sum of the corresponding low resistance of annex is equal to the low tension resistance.
This step can be realized by following steps (1-1) to (1-3), including：
(1-1)：The corresponding low resistance of each high pressure annex included according to high-pressure-loop, from low resistance and resistance
In corresponding relation, the resistance of the corresponding low resistance of each high pressure annex is obtained；
(1-2)：According to the low tension resistance and the resistance of the corresponding low resistance of each high pressure annex, low resistance is determined
Resistance and at least one high pressure annex equal with the low tension resistance；
(1-3)：At least one high pressure annex is constituted into the first high pressure annex set.
(2)：The high pressure annex that first high pressure annex set includes is defined as the high pressure annex broken down.
For second of implementation, this step can specifically be realized by following steps (A) to (C), including：
(A)：The resistance for calculating the resistance value and the resistance of the protective resistance is poor.
(B)：Determine the corresponding second high pressure annex set of resistance difference, the high pressure annex that the second high pressure annex set includes
It is poor that the resistance sum of corresponding low resistance is equal to the resistance；
Specifically, the corresponding low resistance of each high pressure annex that diagnostic equipment includes according to high-pressure-loop, from low resistance
In the corresponding relation of resistance, the resistance of the corresponding low resistance of each high pressure annex is obtained；According to the poor and each height of the resistance
The resistance of the corresponding low resistance of annex is pressed, determines that the resistance and at least one equal with resistance difference high pressure of low resistance are attached
Part；At least one high pressure annex is constituted into the second high pressure annex set.
(C)：The high pressure annex that second high pressure annex set includes is defined as the high pressure annex broken down.
Further, after diagnostic equipment determines the high pressure annex broken down, output prompting, the prompting includes the generation
The mark of the high pressure annex of failure.
The mark of high pressure annex can be the title of high pressure annex or position in high-pressure-loop etc..
In embodiments of the present invention, multiple low resistances, and a high pressure annex correspondence one are increased in high-pressure-loop
Low resistance, the corresponding low resistance of the first high pressure annex is arranged on the two ends of the high-voltage connector of the first high-pressure insert, first
High pressure annex is any high pressure annex in multiple high pressure annexes；When the first high pressure accessories malfunctions, the first high pressure annex
Corresponding low resistance can be connected in high-pressure-loop；Therefore, diagnostic equipment is used for the low tension resistance for detecting high-pressure-loop, according to
The low tension resistance can be determined with the presence or absence of the high pressure annex broken down in high-pressure-loop, if it does, due to multiple low
The resistance of piezoresistance meets the first preparatory condition, and diagnostic equipment can uniquely determine one or more high pressures according to the low tension resistance
Annex, so as to determine the high pressure annex broken down.The present invention can improve detection efficiency.
It should be noted that：The detecting system for the electric automobile mesohigh loop fault that above-described embodiment is provided is in electronic vapour
, can be with only with the division progress of above-mentioned each functional module for example, in practical application during the detection of car mesohigh loop fault
Distribute and completed by different functional modules as needed and by above-mentioned functions, i.e., the internal structure of device is divided into different work(
Energy module, to complete all or part of function described above.In addition, the electric automobile mesohigh ring that above-described embodiment is provided
The detecting system of road failure belongs to same design with the detection method embodiment of electric automobile mesohigh loop fault, and it is specific real
Existing process refers to embodiment of the method, repeats no more here.
The embodiments of the present invention are for illustration only, and the quality of embodiment is not represented.
One of ordinary skill in the art will appreciate that realizing that all or part of step of above-described embodiment can be by hardware
To complete, the hardware of correlation can also be instructed to complete by program, described program can be stored in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only storage, disk or CD etc..
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc. should be included in the scope of the protection.
Claims (10)
1. a kind of detecting system of electric automobile mesohigh loop fault, it is characterised in that the detecting system includes：High compression ring
Road and diagnostic equipment；
The high-pressure-loop is connected by the low pressure shorting stub of high-voltage connector with the diagnostic equipment；
The high-pressure-loop includes multiple high pressure annexes and multiple low resistances, and a high pressure annex corresponds to a low resistance,
The resistance of the multiple low resistance meets the first preparatory condition, and first preparatory condition is：In the multiple low resistance
Each low resistance resistance it is unequal, and to include one or more of the multiple low resistance low for the first resistance set
The resistance of piezoresistance, the second resistance set includes the resistance of one or more of the multiple low resistance low resistance, institute
Stating the first resistance set and the second resistance set includes the resistance of at least one different low resistance, and first resistance
The resistance sum that set includes and the resistance sum that the second resistance set includes are unequal；
The multiple high pressure annex is in parallel successively, and the corresponding low resistance of the first high pressure annex is arranged on the first high pressure annex
High-voltage connector two ends, the first high pressure annex be the multiple high pressure annex in any high pressure annex；
The diagnostic equipment is used for the low tension resistance for detecting the high-pressure-loop, and determines the height according to the low tension resistance
With the presence or absence of the high pressure annex broken down in pressure ring road, and the high pressure annex that determination is broken down.
2. detecting system as claimed in claim 1, it is characterised in that the high-pressure-loop also includes：Protective resistance, the guarantor
Protect the resistance of resistance and the resistance of multiple low resistances meets the second preparatory condition, second preparatory condition is：It is the multiple
The resistance of each low resistance in low resistance is unequal, the resistance of the resistance of the protective resistance and each low resistance
Value is all unequal；And the 3rd resistance set including the protective resistance resistance and the multiple low resistance in one or
The resistance of multiple low resistances, the 4th resistance set is included in the resistance of the protective resistance, and the multiple low resistance
One or more low resistances resistance, it is different that the 3rd resistance set and the 4th resistance set include at least one
The resistance of low resistance, and the resistance that the resistance sum that includes of the 3rd resistance set includes with the 4th resistance set
It is worth sum unequal；
The protective resistance is connected in the high-pressure-loop by the low pressure shorting stub of high-voltage connector.
3. detecting system as claimed in claim 1, it is characterised in that first preparatory condition is：The multiple low tension
The resistance of each low resistance in resistance is unequal, and the resistance of the first low resistance is NK, the N and K are more than 1 just
Number, first low resistance is any low resistance in the multiple low resistance.
4. a kind of detection method of electric automobile mesohigh loop fault, it is characterised in that methods described includes：
The low tension resistance of high-pressure-loop is detected, the high-pressure-loop includes multiple high pressure annexes and multiple low resistances, one
One low resistance of individual high pressure annex correspondence, the resistance of the multiple low resistance meets the first preparatory condition, and described first is pre-
If condition is：The resistance of each low resistance in the multiple low resistance is unequal, and the first resistance set is including described
The resistance of one or more of multiple low resistances low resistance, the second resistance set is included in the multiple low resistance
It is difference low that the resistance of one or more low resistances, the first resistance set and the second resistance set include at least one
The resistance of piezoresistance, and the resistance sum of low resistance that includes of the first resistance set with the second resistance set
Including low resistance resistance sum it is unequal；
Determine that the high-pressure-loop whether there is the high pressure annex broken down according to the low tension resistance；
If it does, the high pressure annex for determining to break down according to the low tension resistance.
5. detection method as claimed in claim 4, it is characterised in that described that the high pressure is determined according to the low tension resistance
Loop whether there is the high pressure annex broken down, including：
Whether determine the low tension resistance is zero；
If the low tension resistance is not zero, determine there is the high pressure annex broken down in the high-pressure-loop.
6. detection method as claimed in claim 4, it is characterised in that the high-pressure-loop also includes protective resistance；
It is described to determine that the high-pressure-loop whether there is the high pressure annex broken down according to the low tension resistance, including：
Determine the low tension resistance whether be the protective resistance resistance；
If the low tension resistance is not the resistance of the protective resistance, determine there is what is broken down in the high-pressure-loop
High pressure annex.
7. detection method as claimed in claim 4, it is characterised in that described to be determined to break down according to the low tension resistance
High pressure annex, including：
The corresponding first high pressure annex set of the low tension resistance is determined, the high pressure that the first high pressure annex set includes is attached
The resistance sum of the corresponding low resistance of part is equal to the low tension resistance；
The high pressure annex that the first high pressure annex set includes is defined as the high pressure annex broken down.
8. detection method as claimed in claim 4, it is characterised in that the high-pressure-loop also includes protective resistance, the guarantor
Protect the resistance of resistance and the resistance of multiple low resistances meets the second preparatory condition, second preparatory condition is：It is the multiple
The resistance of each low resistance in low resistance is unequal, the resistance of the resistance of the protective resistance and each low resistance
Value is all unequal；And the 3rd resistance set including the protective resistance resistance and the multiple low resistance in one or
The resistance of multiple low resistances, the 4th resistance set is included in the resistance of the protective resistance, and the multiple low resistance
One or more low resistances resistance, it is different that the 3rd resistance set and the 4th resistance set include at least one
The resistance of low resistance, and the resistance that the resistance sum that includes of the 3rd resistance set includes with the 4th resistance set
It is worth sum unequal；
The high pressure annex for determining to break down according to the low tension resistance, including：
The resistance for calculating the low tension resistance and the resistance of the protective resistance is poor；
Determine the corresponding second high pressure annex set of the resistance difference, the high pressure annex pair that the second high pressure annex set includes
It is poor that the resistance sum for the low resistance answered is equal to the resistance；
The high pressure annex that the second high pressure annex set includes is defined as the high pressure annex broken down.
9. detection method as claimed in claim 7, it is characterised in that the determination low tension resistance is corresponding first high
Annex set is pressed, including：
The corresponding low resistance of each high pressure annex included according to the high-pressure-loop, is closed from the correspondence of low resistance and resistance
In system, the resistance of the corresponding low resistance of each high pressure annex is obtained；
According to the low tension resistance and the resistance of the corresponding low resistance of each high pressure annex, the resistance of low resistance is determined
Value and at least one high pressure annex equal with the low tension resistance；
At least one described high pressure annex is constituted into the first high pressure annex set.
10. detection method as claimed in claim 4, it is characterised in that before the low tension resistance of the detection high-pressure-loop,
Also include：
The resistance of first preparatory condition is met for each low resistance distribution in the multiple low resistance；
Low resistance resistance corresponding with its is stored in the corresponding relation of low resistance and resistance.
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| CN108058599A (en) * | 2017-12-14 | 2018-05-22 | 重庆长安汽车股份有限公司 | A kind of automobile and its high-voltage interlocking detection circuit |
| CN110450637A (en) * | 2019-07-31 | 2019-11-15 | 东风柳州汽车有限公司 | The fault detection control method of electric car power distribution equipment |
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| JP2007336631A (en) * | 2006-06-12 | 2007-12-27 | Toyota Motor Corp | Power system |
| JP5228324B2 (en) * | 2007-01-17 | 2013-07-03 | 日産自動車株式会社 | Electric vehicle |
| CN201961158U (en) * | 2011-01-14 | 2011-09-07 | 无锡工艺职业技术学院 | High voltage safety device based on real electric automobile |
| CN102539893B (en) * | 2012-01-11 | 2014-09-03 | 重庆长安汽车股份有限公司 | Fault detecting method for output driving load of whole automobile controller and whole automobile controller |
| CN203198756U (en) * | 2013-04-15 | 2013-09-18 | 合肥国骋新能源汽车技术有限公司 | Monitoring and alarm device for electric car high-tension distribution system |
| 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 |
| CN104228588B (en) * | 2014-09-05 | 2017-01-18 | 北京新能源汽车股份有限公司 | High-voltage loop diagnostic circuit of pure electric vehicle |
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Effective date of registration: 20180517 Address after: 241000 Huajing South Road, Yijiang District, Wuhu, Anhui 226 Patentee after: New-energy automobile Technology Co., Ltd. of Cherry Address before: 241006 Changchun Road, Wuhu economic and Technological Development Zone, Wuhu, Anhui, 8 Patentee before: Saic Chery Automobile Co., Ltd. |
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Address after: 241001 No. 226 Huajin South Road, Wuhu High-tech Industrial Development Zone, Wuhu City, Anhui Province Patentee after: Chery New Energy Automobile Co.,Ltd. Address before: 241000 No. 226 Hua Jin South Road, Yijiang District, Anhui, Wuhu Patentee before: CHERY NEW ENERGY AUTOMOBILE TECHNOLOGY Co.,Ltd. |