CN104142475B - A kind of insulation monitoring module evaluating apparatus and method - Google Patents
A kind of insulation monitoring module evaluating apparatus and method Download PDFInfo
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- CN104142475B CN104142475B CN201310169013.7A CN201310169013A CN104142475B CN 104142475 B CN104142475 B CN 104142475B CN 201310169013 A CN201310169013 A CN 201310169013A CN 104142475 B CN104142475 B CN 104142475B
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Abstract
The present invention provides a kind of insulation monitoring module evaluating apparatus and method, and the security of the electrokinetic cell system insulation monitoring module for detecting vehicle, the device includes：Switching device, is connected to form the first loop with the battery and battery management system in power cell of vehicle system；Device is tested, is connected with the switching device, and accesses the test point formation second servo loop of electrokinetic cell；The switching device can only make the conducting of one of first loop and second servo loop；The resistance of the test device is suitable to enter line translation or regulation above and below the insulation safety resistance of setting.The insulation monitoring module evaluation method includes：Above-mentioned detection device is accessed into power cell of vehicle system；The resistance of the test device is converted or adjusts, according to the security of the action evaluation of the relay power cell of vehicle system insulation detection module.The present invention has filled up the technological gap evaluated the security of the insulation monitoring module of power cell of vehicle system.
Description
Technical field
The present invention relates to automobile technical field, and in particular to a kind of insulation monitoring module evaluating apparatus and method.
Background technology
Electrokinetic cell is as one of kernel component of electric automobile, and its operating voltage is general in more than direct current 300V, and
When the electrokinetic cell works, other high voltage parts also seal in vehicle high-pressure system, and so higher operating voltage is to electricity
Insulating properties between the high-pressure system and vehicle chassis of electrical automobile proposes higher requirement.If insulating properties between the two
Decline, with regard to the personal safety of entail dangers to passenger, therefore the state of insulation of the high-pressure system needs to detect in real time and report full-vehicle control
Device.When insulation monitoring module detects insulation values less than the insulation safety resistance set, it will be sent warning signal by communication,
It is simultaneously electric under high-pressure system, to protect occupant or maintenance personal's safety.
Current insulation monitoring module is typically to design on the battery management system in power cell of vehicle system, and it is detected
Principle mainly according to national standard method requirement or uses voltage waveform method for implanting.The function belongs to security function, such as GB/
The detection method of national standard requirement specified in T18384.1-2001, but detection is not carried out to the module at present and commented
The apparatus and method of valency, so can not learn whether the security of power cell of vehicle system insulation detection module meets well
It is required that.
The content of the invention
The features and advantages of the present invention partly state in the following description, or can from the description it is clear that or
Person can be learnt by putting into practice the present invention.
To overcome problem of the prior art, the present invention provides a kind of insulation monitoring module evaluating apparatus and method, is used for
Detect the security of the electrokinetic cell system insulation monitoring module of vehicle.The present invention is suitable in setting using the resistance of test device
Insulation safety resistance above and below enter line translation or regulation, the then reaction of the relay in the power cell of vehicle system is commented
The security of the valency power cell of vehicle system insulation detection module, so as to fill up the inspection of the insulation to power cell of vehicle system
Survey the technological gap that module safety is evaluated.
The technical scheme that present invention solution above-mentioned technical problem is used is as follows：
According to an aspect of the present invention there is provided a kind of insulation monitoring module evaluating apparatus, the power for detecting vehicle
The security of battery system insulation monitoring module, the insulation monitoring module evaluating apparatus includes：Switching device, provided with the first connection
End, the second connection end, the 3rd connection end and the 4th connection end, first connection end and the second connection end are respectively used to dynamic with vehicle
Battery and battery management system in power battery system connect to form the first loop；Device is tested, provided with the 5th connection end
With the 6th connection end, the 5th connection end is connected with the 4th connection end of the switching device, the 3rd connection end of the switching device
With the test point of electrokinetic cell in the one of access power cell of vehicle system in the 6th connection end of the test device,
Another access vehicle body ground wire, forms second servo loop；Wherein, the switching device is cut between the first state and a second state
Change, in the first state, turning on first connection end and the second connection end makes first loop be in channel status, and disconnection should
3rd connection end and the 4th connection end；In second state, the 3rd connection end and the 4th connection end are turned on, makes the second servo loop
In channel status, and disconnect first connection end and the second connection end；Wherein, the resistance of the test device is suitable in setting
Enter line translation or regulation above and below insulation safety resistance.
According to one embodiment of present invention, the switching device is binary channels button switch.
According to one embodiment of present invention, the test device uses resistance, and the resistance can enter line translation or regulation, make
Its resistance is changed above and below the insulation safety resistance of setting.
According to another aspect of the present invention there is provided a kind of insulation monitoring module evaluation method, for detecting the dynamic of vehicle
The security of power battery system insulation monitoring module, the insulation monitoring module evaluation method includes：Insulation monitoring module is evaluated
Device is linked into power cell of vehicle system between the test point of electrokinetic cell and vehicle body ground wire；Convert or adjust the tester
The resistance of part, the insulation safety resistance for making it be less than the setting, if the positive relay of master or master in the power cell of vehicle system
Negative relay does not make corresponding disconnection action, then the security of the power cell of vehicle system insulation detection module is unsatisfactory for
It is required that.
According to one embodiment of present invention, also comprise the following steps：The resistance of the test device is converted or adjusted, makes it
More than the insulation safety resistance of the setting, if the positive relay of master or main negative relay in the power cell of vehicle system make disconnected
Work is started, then the security of the power cell of vehicle system insulation detection module is unsatisfactory for requiring.
According to one embodiment of present invention, the insulation monitoring module evaluating apparatus is being accessed into the power cell of vehicle system
During system, if the side of the positive electrode of the electrokinetic cell is connected to main positive relay, the 3rd connection end and the test device of the switching device
The 6th connection end in one of access electrokinetic cell test point be specially the positive relay of the master either end；If
The negative side of the electrokinetic cell is connected to main negative relay, then the 3rd connection end of the switching device connects with the 6th of the test device
The test point for connecing the electrokinetic cell of one of access in end is specially the either end that the master bears relay.
According to one embodiment of present invention, also comprise the following steps：S1, determines the resistance of the test device, makes this exhausted
Second servo loop conducting in edge detection module evaluating apparatus, and start the battery management system in the power cell of vehicle system
Work, the battery management system detects the resistance of the insulaion resistance of power cell of vehicle system over the ground；S2, will detect what is drawn
Resistance compared with the resistance of the test device of determination, if the resistance that draws of the detection in certain error range not with really
The resistance of the fixed test device is equal, then the security of the power cell of vehicle system insulation detection module is unsatisfactory for requiring.
According to one embodiment of present invention, also include in step S1：When the battery management system detects the vehicle
After the resistance of the insulaion resistance of electrokinetic cell system over the ground, the reaction time of insulaion resistance detection is calculated, is according to the reaction time
The security of the no insulation monitoring module in the time range inner evaluation power cell of vehicle system set in advance.
According to one embodiment of present invention, in step S1, if first turning on the second servo loop, then the cell tube is made
System starts are managed, then the reaction time of insulaion resistance detection starts working for the battery management system time and the electricity
Pond management system detects and obtained the time difference of the resistance of the insulaion resistance, if the reaction time of insulaion resistance detection is not pre-
In the time range first set, then the security of the power cell of vehicle system insulation detection module is unsatisfactory for requiring.
According to one embodiment of present invention, in step S1, if first making the battery management system start working, then make
The second servo loop is turned on, then the reaction time of insulaion resistance detection switches for the second servo loop break-make time and the cell tube
Manage system detectio and obtain the time difference of the resistance of the insulaion resistance, if the reaction time of insulaion resistance detection does not set in advance
In fixed time range, then the security of the power cell of vehicle system insulation detection module is unsatisfactory for requiring.
The invention provides a kind of insulation monitoring module evaluating apparatus and method, the resistance using test device is suitable to
Enter line translation or regulation above and below the insulation safety resistance of setting, then according to the reaction of the power cell of vehicle System relays electrical equipment
The insulation safety of the power cell of vehicle system is evaluated, insulation monitoring module evaluating apparatus of the invention is simple in construction, installed
It is convenient, and can just be realized to power cell of vehicle system insulation detection module peace without being changed to power cell of vehicle system
The evaluation of full property, has filled up the technology evaluated the security of power cell of vehicle system insulation detection module empty well
In vain.
By reading specification, the features of these technical schemes will be best understood and interior in those of ordinary skill in the art
Hold.
Brief description of the drawings
The present invention is specifically described below with reference to accompanying drawing and with reference to example, advantages of the present invention and implementation will
More obvious, wherein content is only used for explanation of the present invention shown in accompanying drawing, without constituting to the present invention in all senses
On limitation, in the accompanying drawings：
Fig. 1 is the structural representation of the insulation monitoring module evaluating apparatus of the embodiment of the present invention.
Fig. 2A is the schematic flow sheet of the insulation monitoring module evaluation method of first embodiment of the invention.
Fig. 2 B are the schematic flow sheet of the insulation monitoring module evaluation method of second embodiment of the invention.
Fig. 3 accesses insulation monitoring module evaluating apparatus after power cell of vehicle system for first embodiment of the invention
Structural representation.
Fig. 4 accesses insulation monitoring module evaluating apparatus after power cell of vehicle system for second embodiment of the invention
Structural representation.
Fig. 5 accesses insulation monitoring module evaluating apparatus after power cell of vehicle system for third embodiment of the invention
Structural representation.
Fig. 6 accesses insulation monitoring module evaluating apparatus after power cell of vehicle system for fourth embodiment of the invention
Structural representation.
Embodiment
As shown in figure 1, the present invention provides a kind of insulation monitoring module evaluating apparatus, the electrokinetic cell system for detecting vehicle
The security for insulation monitoring module of uniting, the insulation monitoring module evaluating apparatus includes：Switching device 10, provided with the first connection end
11st, use respectively the second connection end 12, the 3rd connection end 13 and the 4th connection end 14, the connection end 12 of the first connection end 11 and second
It is connected in the battery management system 40 in the battery 30 and power cell of vehicle system in power cell of vehicle system with shape
Into the first loop；Device 20 is tested, provided with the 5th connection end 25 and the 6th connection end 26, the 5th connection end 25 and the derailing switch
4th connection end 14 of part is connected, the 3rd connection end 13 of the switching device and its in the 6th connection end 26 of the test device
In one access electrokinetic cell in the power cell of vehicle system test point, another access vehicle body ground wire, formed second time
Road.
Although not shown in figure, the test device 20 can also be located at the upside of switching device 10, now, first go back to
The formation on road does not change, but the formation of second servo loop is changed.Specifically, the 3rd connection end 13 of the switching device 10
With detecting that the 6th connection end 26 of device 20 is connected；And the 4th connection end 14 of switching device is connected with the 5th of the test device
The test point of electrokinetic cell in one of access power cell of vehicle system in end 25, another access vehicle body ground wire,
Form second servo loop.
Wherein, the switching device is switched between the first state and a second state, in the first state, turn on this
One connection end 11 and the second connection end 12 make first loop be in channel status, and disconnect the 3rd connection end 13 and the 4th company
Connect end 14；In second state, the 3rd connection end 13 and the 4th connection end 14 are turned on, the second servo loop is in path shape
State, and disconnect the connection end 12 of the first connection end 11 and second.
The switching device 10 can use binary channels button switch in one particular embodiment of the present invention, and the binary channels is opened
Before pass button is pressed, the two channel switch button is in first state；After the two channel switch button is pressed, the two channel switch
Button is in the second state.
The resistance of the test device 20 is suitable to the insulation safety resistance R in setting0Enter line translation or regulation up and down, with basis
The security of the reaction evaluating of relay in the power cell of vehicle system power cell of vehicle system insulation detection module.
The test device uses resistance in the present embodiment, and the resistance can enter line translation or regulation, makes its resistance in the insulation of setting
Safe resistance R0It is changed up and down, e.g. 0.9R0Or 1.1R0.The test device 20 can be a variable resistor, also may be used
Be a replaceable resistance base and resistance combination.When need it is automatic carry out resistance adjustment when, the test device can be with
It is the chip of an adjustable resistor, resistance adjustment is carried out automatically by setting programmed logic, or according to other input signals
Carry out resistance adjustment.
Fig. 2A is refer to, the present invention also provides a kind of insulation monitoring module evaluation method, be equally used for detecting the dynamic of vehicle
The security of power battery system insulation monitoring module, the insulation monitoring module evaluation method comprises the following steps：S10, will insulate
Detection module evaluating apparatus is linked into power cell of vehicle system between the test point of electrokinetic cell and vehicle body ground wire；S20, becomes
The resistance of the test device is changed or adjusts, the insulation safety resistance for making it be less than the setting, if in the power cell of vehicle system
The positive relay of master or main negative relay do not make corresponding disconnection action, then power cell of vehicle system insulation detection mould
The security of block is unsatisfactory for requiring.
Referring again to Fig. 2 B, Fig. 2 B illustrate for the flow of the insulation monitoring module evaluation method of second embodiment of the invention
Figure.In the present embodiment, the insulation monitoring module evaluation method is in addition to including above-mentioned steps S10 and S20, in addition to step
S30, converts or adjusts the resistance of the test device, is larger than the insulation safety resistance of the setting, if the power cell of vehicle
The positive relay of master in system or main negative relay make disconnection action, then the power cell of vehicle system insulation detection module
Security is unsatisfactory for requiring.Explained with reference to specific embodiment：
Fig. 3 is refer to, insulation monitoring module evaluating apparatus is accessed vehicle power electricity by Fig. 3 for first embodiment of the invention
Structural representation after cell system.The power cell of vehicle system includes electrokinetic cell 80, the positive pole side joint of the electrokinetic cell 80
There are main positive relay 61 and the pre-charge resistance 63 and pre-charge-relay 62 of the series connection being connected in parallel；In the electrokinetic cell
80 negative side is connected to main negative relay 64.And the negative side and battery management system 40 of the battery 30 are with being all connected on vehicle body
On line 70, while the side of the positive electrode of the battery 30 is also directly connected by switch 50 with the battery management system 40, when vehicle
When ignition switch is in " ON " shelves, the switch 50 will be closed, so that the battery 30 can just supply for the battery management system 40
Electricity, makes the battery management system start working.And the first connection end of the switching device 10 in insulation monitoring module evaluating apparatus
11 are connected with the battery 30 and the battery management system 40 and constitute the first loop respectively with the second connection end 12, so should
The break-make in the first loop can be monitored directly by the battery management system 40.
In the present embodiment, when the insulation monitoring module evaluating apparatus is accessed into power cell of vehicle system, the switch
3rd connection end 13 of device 10 is linked between the positive relay 61 of the master and the electrokinetic cell 80；And the of the test device 20
Six connection ends 26 are then connected with the vehicle body ground wire 70.Done in detail with reference to insulation monitoring module evaluation method as shown in Figure 2
The step of illustrate.
The resistance of the test device 20 is converted or adjusts first, the insulation safety resistance R for making it be less than the setting0, at this
In embodiment, the resistance of the test device 20 is 0.9R0。
Then, switching device 10 is in the second state, that is, turn on the 3rd connection end 13 and the 4th connection end 14, make
The second servo loop is in channel status, and disconnects the connection end 12 of the first connection end 11 and second；Then close the switch 50,
The battery management system 40 is started working, and detects the resistance R of the insulaion resistance of power cell of vehicle system over the ground1If, inspection
The resistance R measured out1The resistance of the test device in certain error range with determination is unequal, then vehicle power electricity
The security of cell system insulation monitoring module is unsatisfactory for requirement, in the present embodiment, and the resistance of the test device 20 is 0.9R0,
So the resistance R of the insulaion resistance of power cell of vehicle system over the ground1Scope should be 0.8R0＜ R1＜ R0。
Certainly, close first the switch 50 in above-mentioned steps, the battery management system 40 is started working, and is examined
Survey the resistance R of the insulaion resistance of power cell of vehicle system over the ground1, switching device 10 is in the second state, that is, lead
Logical 3rd connection end 13 and the 4th connection end 14, make the second servo loop be in channel status, and disconnect first connection end 11
With the second connection end 12.The now resistance R of the insulaion resistance of power cell of vehicle system over the ground1Scope should equally meet
0.8R0＜ R1＜ R0, otherwise the security of the power cell of vehicle system insulation detection module be unsatisfactory for require.
The resistance R of the above-mentioned detection insulaion resistance of power cell of vehicle system over the ground1Method can using be, for example,
GB/T18384.1-2001 national standard method, when being measured using this method, it is necessary to take corresponding circuit structure, specifically
For, the battery management system 40 needs with the positive pole of electrokinetic cell 80 to be connected using first switching element, while utilizing second
Switch element is connected with the negative pole of electrokinetic cell 80；And can also be accessed on demand by this in the inside of the battery management system 40
The measuring resistance R that the nominal voltage of electrokinetic cell 80 is calculated；Detecting the insulaion resistance of power cell of vehicle system over the ground
Resistance R1When, first, first switching element is disconnected, close second switch element, the battery management system 40 is detected the power
The negative pole voltage-to-ground V of battery 801, now the inside of the battery management system 40 need not access measuring resistance R；Then, break
Second switch element is opened, first switching element is closed, the battery management system 40 is detected the positive pole of the electrokinetic cell 80 over the ground
Voltage V2, now the inside of the battery management system 40 is also without access measuring resistance R；Then V is compared1With V2Value it is big
It is small, if V1＞ V2, then first switching element is disconnected, second switch element is closed, while the inside of the battery management system 40 connects
Enter measuring resistance R, then detect the negative pole voltage-to-ground V of the electrokinetic cell 803, the now power cell of vehicle system over the ground exhausted
The resistance R of edge resistance1=（V1-V3）R/V3；If V1＜ V2, then second switch element is disconnected, first switching element is closed, simultaneously
The inside access measuring resistance R of the battery management system 40, then detect the positive pole voltage-to-ground V of the electrokinetic cell 804, now should
The resistance R of the insulaion resistance of power cell of vehicle system over the ground1=（V2-V4）R/V4.In the present embodiment, due to first loop
The presence of middle test device 20, together with the resistance parallel connection infinitely great equivalent to the test device 20 and theoretical value, institute
The resistance R of the insulaion resistance of power cell of vehicle system over the ground detected with the battery management system 401With the test
The resistance of device 20 should be equal within the specific limits.
Then the battery management system 40 is according to resistance R1Size decide whether the main positive relay 61 of control or main negative
Relay 64 makes the action of disconnection and whether reports insulation fault.In the present embodiment, because the test device 20 is less than
The insulation safety resistance R of the setting0, so should control to lead one of positive relay 61 and main negative relay 64 makes disconnected
The action opened simultaneously reports insulation fault, or the main positive relay 61 of control and main negative relay 64 make simultaneously disconnection action and on
Report insulation fault.If the battery management system 40 does not control the positive relay 61 of the master or main negative relay 64 to make the dynamic of disconnection
Make or do not report insulation fault, then the security of the power cell of vehicle system insulation detection module is unsatisfactory for requiring.
Then, the reaction time from insulaion resistance detection is further to the power cell of vehicle system insulation detection module
Security carries out detection evaluation, but the determination in the reaction time of insulaion resistance detection has because the order of operating procedure is different
Institute is different.If first making the second servo loop be in channel status, then the battery management system 40 is started working and detect the vehicle
The resistance R of the insulaion resistance of electrokinetic cell system over the ground1, then the reaction time of insulaion resistance detection is the battery management system
40 times started working and the battery management system 40 detect and obtain the resistance R of the insulaion resistance1Time difference；If first making
The battery management system 40 is started working and detects the resistance R of the insulaion resistance of power cell of vehicle system over the ground1, then make this
Second servo loop is in channel status, then the reaction time that the insulaion resistance is detected is the time that the second servo loop break-make switches and should
Battery management system 40 detects and obtained the time difference of the resistance of the insulaion resistance.If the reaction time of above-mentioned insulaion resistance detection
Not in time range set in advance, then the security of the power cell of vehicle system insulation detection module is unsatisfactory for requiring.
Then the resistance of the test device 20 is converted or adjusted, the insulation safety resistance R of the setting is larger than0, at this
In embodiment, the resistance of the test device 20 is 1.1R0。
Then, switching device 10 is in the second state, that is, turn on the 3rd connection end 13 and the 4th connection end 14, make
The second servo loop is in channel status, and disconnects the connection end 12 of the first connection end 11 and second；Then close the switch 50,
The battery management system 40 is started working, and detects the resistance R of the insulaion resistance of power cell of vehicle system over the ground2If, inspection
The resistance R measured out2Equal not with the resistance of the test device of determination in certain error range, then the vehicle power is electric
The security of cell system insulation monitoring module is unsatisfactory for requirement, in the present embodiment, and the resistance of the test device 20 is 1.1R0,
So the resistance R of the insulaion resistance of power cell of vehicle system over the ground2Scope should be R0＜ R2＜ 1.2R0。
Certainly, close first the switch 50 in above-mentioned steps, the battery management system 40 is started working, then
The resistance R of the insulaion resistance of power cell of vehicle system over the ground is detected by the method for setting2, then it is in switching device 10
Second state, that is, turn on the 3rd connection end 13 and the 4th connection end 14, the second servo loop is in channel status, and disconnection should
First connection end 11 and the second connection end 12.The now resistance R of the insulaion resistance of power cell of vehicle system over the ground2Scope
R should equally be met0＜ R2＜ 1.2R0, otherwise the security of the power cell of vehicle system insulation detection module be unsatisfactory for will
Ask.
Then the battery management system 40 is according to resistance R2Size decide whether the main positive relay 61 of control or main negative
Relay 64 makes the action of disconnection and whether reports insulation fault, in the present embodiment, because the test device 20 is more than
The insulation safety resistance R of the setting0, so should control relay do not make the action of disconnection and keep the main positive He of relay 61
Main negative relay 64 is at the state of closure and need not report insulation fault.If the main positive relay of the battery management system 40 control
Device 61 or main negative relay 64 make the action of disconnection or report insulation fault, then power cell of vehicle system insulation detection mould
The security of block is unsatisfactory for requiring.
Finally, the reaction time that can also be detected from insulaion resistance is further detected to the power cell of vehicle system insulation
The security of module carries out detection evaluation, but the determination in the reaction time of insulaion resistance detection because operating procedure order not
It is different together.In the present embodiment, if first making the second servo loop be in channel status, then open the battery management system 40
Beginning work and the resistance R for detecting the insulaion resistance of power cell of vehicle system over the ground2, then during the reaction of insulaion resistance detection
Between for the battery management system 40 start working time and the battery management system 40 detect and obtain the resistance of the insulaion resistance
Value R2Time difference；If first making the battery management system 40 start working and detecting the insulation of power cell of vehicle system over the ground
The resistance R of resistance2, then the second servo loop is in channel status, then the reaction time of insulaion resistance detection is this second time
The time of road break-make switching and the battery management system 40 detect and obtained the time difference of the resistance of the insulaion resistance.If above-mentioned exhausted
The reaction time of edge resistance detection not in time range set in advance, then the power cell of vehicle system insulation detection module
Security be unsatisfactory for require.
Insulation monitoring module evaluating apparatus is accessed into vehicle power for second embodiment of the invention referring again to Fig. 4, Fig. 4
Structural representation after battery system.From unlike Fig. 3, in the present embodiment, by the insulation monitoring module evaluating apparatus
When accessing power cell of vehicle system, the 3rd connection end 13 of the switching device 10 is linked into the another of the positive relay 61 of the master
Hold, and the other end of the positive relay 61 of the master is joined directly together with the positive pole or not electrokinetic cell 80；And the test device 20
6th connection end is then connected with the vehicle body ground wire 70.Complete to detect mould to power cell of vehicle system insulation using the circuit structure
The method and step of block safety evaluatio is consistent with the method and step of introduction in figure 3, and only the battery testing system is detected
The resistance of insulaion resistance has a little difference, will not be repeated here.
Fig. 5 is refer to, insulation monitoring module evaluating apparatus is accessed vehicle power electricity by Fig. 5 for third embodiment of the invention
Structural representation after cell system.From unlike Fig. 3, in the present embodiment, being connect by the insulation monitoring module evaluating apparatus
When entering power cell of vehicle system, the 6th connection end 26 of the test device 20 is linked into the master and bears relay 64 and the power electric
The direct one end of negative pole in pond 80；And the 3rd connection end 13 of the switching device 10 is then connected with the vehicle body ground wire 70.Utilize this
Circuit structure completes the method and step and introduction in figure 3 to power cell of vehicle system insulation detection module safety evaluatio
Method and step it is consistent, the resistance of the only insulaion resistance that the battery testing system is detected has a little difference, will not be repeated here.
Fig. 6 is refer to, insulation monitoring module evaluating apparatus is accessed vehicle power electricity by Fig. 6 for fourth embodiment of the invention
Structural representation after cell system.From unlike Fig. 3, in the present embodiment, being connect by the insulation monitoring module evaluating apparatus
When entering power cell of vehicle system, the 6th connection end 26 of the test device 20 is linked into the other end that the master bears relay 64,
And the other end of the negative relay 64 of the master is joined directly together with the negative pole or not electrokinetic cell 80；And the 3rd of the switching device 10
Connection end 13 is then connected with the vehicle body ground wire 70.Complete to evaluate power cell of vehicle system insulation module using the circuit structure
The method and step of safety detection evaluation is consistent with the method and step introduced in figure 3, and only the battery testing system is detected
The resistance of insulaion resistance has a little difference, will not be repeated here.
The invention provides a kind of insulation monitoring module evaluating apparatus and insulation monitoring module evaluation method, using test
The resistance of device is suitable to enter line translation or regulation above and below the insulation safety resistance of setting, then according to the power cell of vehicle system
The reaction of relay in system, evaluates the security of the insulation monitoring module of the power cell of vehicle system, insulation of the invention
Detection module evaluating apparatus is simple in construction, easy for installation, and can just be realized pair without be changed to power cell of vehicle system
The evaluation of power cell of vehicle system insulation detection module security, and its content evaluated contains whether relay disconnects
Insulation function, the resistance accuracy of insulaion resistance and many abundant contents such as reaction time of insulaion resistance detection, very
The technological gap evaluated the security of power cell of vehicle system insulation detection module has been filled up well.
Above by reference to the preferred embodiments of the present invention have been illustrated, those skilled in the art do not depart from the scope of the present invention
And essence, there can be a variety of flexible programs to realize the present invention.For example, as the shown partially of one embodiment or description
Feature can be used for another embodiment to obtain another embodiment.Preferable feasible embodiment of the invention is these are only, not
Therefore the interest field of the present invention is limited to, the equivalence changes that all utilization description of the invention and accompanying drawing content are made are both contained in
Within the interest field of the present invention.
Claims (7)
1. a kind of insulation monitoring module evaluation method, the safety of the electrokinetic cell system insulation monitoring module for detecting vehicle
Property, it is characterised in that the insulation monitoring module evaluation method includes：
Insulation monitoring module evaluating apparatus is linked into the test point of electrokinetic cell and vehicle body ground wire in power cell of vehicle system
Between, wherein, the insulation monitoring module evaluating apparatus includes switching device and test device, and the switching device is provided with first
Connection end, the second connection end, the 3rd connection end and the 4th connection end, first connection end and the second connection end be respectively used to
Battery and battery management system in power cell of vehicle system connect to form the first loop；The test device is provided with the
Five connection ends and the 6th connection end, the 5th connection end are connected with the 4th connection end of the switching device, the derailing switch
3rd connection end of part and one of access power cell of vehicle system in the 6th connection end of the test device
The test point of middle electrokinetic cell, another access vehicle body ground wire, forms second servo loop；
Convert or adjust the resistance of the test device, the insulation safety resistance for making it be less than setting, if the vehicle power is electric
The positive relay of master or main negative relay in cell system do not make corresponding disconnection action, then the power cell of vehicle system
The security of insulation monitoring module is unsatisfactory for requirement, wherein, the test device uses resistance, and the resistance can enter line translation
Or regulation, its resistance is changed above and below the insulation safety resistance of setting.
2. insulation monitoring module evaluation method according to claim 1, it is characterised in that also comprise the following steps：Conversion
Or the resistance of the regulation test device, the insulation safety resistance of the setting is larger than, if the power cell of vehicle system
The positive relay of master in system or main negative relay make disconnection action, then the power cell of vehicle system insulation detection module
Security is unsatisfactory for requiring.
3. insulation monitoring module evaluation method according to claim 1, it is characterised in that
When the insulation monitoring module evaluating apparatus is accessed into the power cell of vehicle system, if the electrokinetic cell is just
Pole side joint has main positive relay, then the 3rd connection end of the switching device and its in the 6th connection end of the test device
In one access the electrokinetic cell test point be specially the positive relay of the master either end；If the electrokinetic cell
Negative side be connected to main negative relay, then the 3rd connection end of the switching device with the 6th connection end of the test device
One of access the electrokinetic cell test point be specially the master bear relay either end.
4. insulation monitoring module evaluation method according to claim 1, it is characterised in that also comprise the following steps：
S1, determines the resistance of the test device, turns on the second servo loop in the insulation monitoring module evaluating apparatus, and make
Battery management system in the power cell of vehicle system is started working, and the battery management system detects the vehicle power
The resistance of the insulaion resistance of battery system over the ground；
S2, will detect the resistance drawn compared with the resistance of the test device of determination, if described detect that the resistance drawn exists
It is equal not with the resistance of the test device of determination in certain error range, then the power cell of vehicle system insulation inspection
The security for surveying module is unsatisfactory for requiring.
5. insulation monitoring module evaluation method according to claim 4, it is characterised in that also wrapped in the step S1
Include：After the battery management system detects the resistance of the insulaion resistance of the power cell of vehicle system over the ground, insulation is calculated
The reaction time of resistance detection, according to the reaction time whether in time range inner evaluation set in advance described in power cell of vehicle
The security of the insulation monitoring module of system.
6. insulation monitoring module evaluation method according to claim 5, it is characterised in that in the step S1, if first
The second servo loop is turned on, then the battery management system is started working, then the reaction time of the insulaion resistance detection
The time and the battery management system started working for the battery management system are detected and obtain the resistance of the insulaion resistance
The time difference of value, if the reaction time of insulaion resistance detection, not in time range set in advance, the vehicle is moved
The security of power battery system insulation monitoring module is unsatisfactory for requiring.
7. insulation monitoring module evaluation method according to claim 5, it is characterised in that in the step S1, if first
The battery management system is started working, then turn on the second servo loop, then the reaction time of the insulaion resistance detection
The resistance that the time and the battery management system switched for the second servo loop break-make is detected and obtains the insulaion resistance
Time difference, if the reaction time of insulaion resistance detection is not in time range set in advance, the vehicle power electricity
The security of cell system insulation monitoring module is unsatisfactory for requiring.
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| EP3919924A4 (en) * | 2019-02-28 | 2022-04-20 | Contemporary Amperex Technology Co., Limited | Energy storage system and insulation detection method therefor |
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| US9772383B2 (en) * | 2015-03-04 | 2017-09-26 | Johnson Controls Technology Company | Battery test report system and method |
| CN105911352B (en) * | 2016-04-13 | 2020-02-18 | 北京新能源汽车股份有限公司 | Tester for measuring insulation resistance of power battery |
| CN110389289B (en) * | 2018-04-18 | 2021-06-11 | 宁德时代新能源科技股份有限公司 | Insulation fault detection method and control device |
| CN112014641B (en) * | 2019-05-28 | 2023-09-15 | 北京新能源汽车股份有限公司 | Method and device for testing insulation resistance detection precision of whole electric automobile |
| CN112684361B (en) * | 2021-01-25 | 2022-08-23 | 潍柴动力股份有限公司 | Battery insulation resistance detection method, device and system |
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