CN206505154U - A kind of new pure electric coach insulation state monitoring system - Google Patents
A kind of new pure electric coach insulation state monitoring system Download PDFInfo
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- CN206505154U CN206505154U CN201720039384.7U CN201720039384U CN206505154U CN 206505154 U CN206505154 U CN 206505154U CN 201720039384 U CN201720039384 U CN 201720039384U CN 206505154 U CN206505154 U CN 206505154U
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Abstract
A kind of new pure electric coach insulation state monitoring system of the utility model, including electrokinetic cell, load, relay first switch group, relay second switch group, insulation monitor, power supply, battery management system and the entire car controller being connected；The insulation monitor includes passive detection module, active detection module and main control module；The main control module is used to carry out information exchange and switching at runtime operation passive detection module and active detection module with passive detection module and active monitoring modular；The battery management system control relay first switch group, the vehicle control unit controls relay second switch group；The electrokinetic cell, relay first switch group, relay second switch group and load form a circuit loop.The utility model integrates the active and passive detection method of electric motor coach insulated monitoring in same system, and Insulation monitoring is safe and accurate, rapidly and efficiently.
Description
Technical field
The utility model is related to electric motor coach state of insulation detection technique field, more particularly to a kind of new pure electric coach
Insulation state monitoring system.
Background technology
Electric vehicle has obtained significant progress as a kind of vehicles of energy-conserving and environment-protective in this century.Due to electronic
The driving voltage for the power section that vehicle is used is most of all in more than 36VDC (VOLT Direct Current), some height
Up to 500VDC, considerably beyond the rank of safe voltage, therefore, the dynamical system of electric vehicle needs very reliable insulation
Property, to ensure normal operation and the safety of user of electric vehicle.Typically using nonconducting material by electrical body isolate or
Wrap up to improve insulating properties, and prevent from getting an electric shock, good insulation properties can ensure the safe operation of electrical equipment and circuit.Absolutely
Edge resistance is electrical equipment and the most basic insulation index of electric wiring.But, influence the factor of insulaion resistance a lot, such as insulate
The feelings such as layer rupture, there was dampness in the air, the contact area with conductive dust, increasing and electrical body and pressure and moist greasy dirt
Condition, can make the reduction of electric component insulating properties.
Qiang Zhiyaoqiud by existing national standard, electric motor coach must possess insulated monitoring system and meet safety requirements.By current electricity
The wide variety of insulaion resistance detection method of dynamic car, mainly there is resistance method of temperature measurement and low frequency injection method.
Resistance method of temperature measurement is a kind of passive measuring method, the state of insulation of detection electrokinetic cell side, and can not be in load
The state of insulation of vehicle load end is detected before high pressure, so there is a security risk：Because not closed in high-voltage relay
Before can not detect load end state of insulation, when vehicle load end has insulation fault, (execution is closed during high-tension electricity on vehicle
Close high-voltage relay) there is the risk that load over-current scaling loss or personnel get an electric shock.But this kind of detection method has response speed
Hurry up, the advantage that accuracy of detection is high.
And low frequency injection method is a kind of active detection method, vehicle load end can be detected before high pressure in load
State of insulation, this kind of method has higher accuracy of detection under quiescent conditions.But ought in the dynamic case, due to real vehicle traveling
When high tension loop in battery terminal voltage and total current fluctuation, interference can be produced to the voltage signal of injection, so as to influence detection
The precision of insulaion resistance out.Further, since battery two ends and load two ends have the equivalent capacity of μ F ranks, note to vehicle body
The voltage signal entered can carry out discharge and recharge to equivalent capacity, so that the insulaion resistance detected judges that the response time extends.
Therefore, both approaches can be integrated to electric motor coach progress state of insulation by suddenly needing a kind of insulated monitoring system
Detection.
Utility model content
To solve the technical problem of above-mentioned electric motor coach state of insulation detecting system, the utility model provides a kind of integrate
Resistance method of temperature measurement and low frequency injection method, safe and reliable new pure electric coach insulation state monitoring system：
A kind of new pure electric coach insulation state monitoring system, including electrokinetic cell, load, the relay being connected
One switches set, relay second switch group, insulation monitor, power supply, battery management system and entire car controller；It is described exhausted
Edge monitor includes passive detection module, active detection module and main control module, and the passive detection module is passive by first
Detection end points L1+ and the second passive detection end points L1- is connected with the positive pole of electrokinetic cell with negative pole respectively, the active detection
Module is connected by the first active active detection end points L2- of detection end points L2+ and second with the two ends of the load；The master
Controlling module is used to carry out information exchange and switching at runtime operation passive detection module with passive detection module and active monitoring modular
With active detection module；The insulation monitor passes through vehicle CAN communication network and the battery management system and the vehicle
Controller carries out information exchange；The battery management system control relay first switch group, the vehicle control unit controls after
Electrical equipment second switch group；The electrokinetic cell, relay first switch group, relay second switch group and load form a circuit
Loop；The relay first switch group includes first switch and second switch, and the relay second switch group includes the 3rd
Switch and the 4th switch；The first switch and the second switch are located at the loop being connected with power battery anode and negative pole
On；3rd switch is located at loading on the positive pole loop being connected, and the 4th switch is in parallel with the described 3rd switch, institute
Series connection is provided with a preliminary filling resistance on branch road where stating the 4th switch.
As a further improvement, the battery management system controls the first switch and the second switch to disconnect or close
Close；The 3rd switch and the described 4th is switched off or closed described in the vehicle control unit controls；4th switch is preliminary filling
Relay switch；3rd switch is high pressure main relay switch.
As a further improvement, the power supply is connected with insulation monitor, the size of the power supply is
24V；The ground strap that the insulation monitor is drawn need to be connected with vehicle body.
As a further improvement, the vehicle CAN network passes through CANH and CANL connections insulation monitor, battery management system
System, entire car controller and vehicle other CAN nodes.
Compared with prior art, the utility model has advantages below：
A kind of the utility model new pure electric coach insulation state monitoring system combination resistance method of temperature measurement and low frequency note
Enter method in same set of system, switched in real time by the main control module and regulated and controled, realize high-voltage load in upper height
The insulaion resistance of battery-end and load end can be detected before pressure, it is to avoid the upper height because of only detection battery-end (or load end)
The potential safety hazard caused after pressure；And the advantage of resistance method of temperature measurement and low frequency injection method is taken full advantage of, detected is exhausted
Edge resistance is more quick and precisely.Therefore, the utility model method possesses advantage more safe and accurate, rapidly and efficiently.
Brief description of the drawings
Accompanying drawing 1 is a kind of structural representation of new pure electric coach insulation state monitoring system of the utility model；
Accompanying drawing 2 is a kind of flow of the control method of new pure electric coach insulation state monitoring system of the utility model
Figure.
Embodiment
, it is necessary to which explanation, term " first ", " second " are only used for describing purpose in description of the present utility model, and
It is not intended that indicating or implying relative importance." being connected ", " connection " should be interpreted broadly, for example, it may be fixed connect
Connect or be detachably connected, or be integrally connected；Can be mechanical connection or electrical connection；It can be direct phase
Even, it can also be indirectly connected to by intermediary, can be the connection of two element internals.For the ordinary skill people of this area
For member, concrete meaning of the above-mentioned term in the utility model can be understood with concrete condition.In addition, being retouched of the present utility model
In stating, unless otherwise indicated, " multiple " are meant that two or more.
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that retouched
The embodiment stated is a part of embodiment of the present utility model, rather than whole embodiments.Based on the reality in the utility model
Apply example, the every other embodiment that those of ordinary skill in the art are obtained on the premise of creative work is not made, all
Belong to the scope of the utility model protection.The utility model is made with embodiment below in conjunction with the accompanying drawings further to retouch in detail
State.
Refer in Fig. 1, embodiment, a kind of new pure electric coach insulation state monitoring system, including be connected it is dynamic
Power battery 10, load 20, relay first switch group 30, relay second switch group 40, insulation monitor 50, power supply
60th, battery management system 70 and entire car controller 80；The insulation monitor 50 includes passive detection module 51, active detection mould
Block 52 and main control module 53, the passive detection module 51 pass through the first passive detection end points L1+ and the second passive detection end points
Positive poles of the L1- respectively with electrokinetic cell 10 is connected with negative pole, and the active detection module passes through the first active detection end points L2+
It is connected with the second active detection end points L2- with the two ends of the load 20；The main control module 53 is used for and passive detection mould
Block 51 and active monitoring modular 52 carry out information exchange and switching at runtime operation passive detection module 51 and active detection module 52,
The main control module 53 can individually regulate and control passive detection module 51 or active monitoring modular 52 is run successively；The insulation monitor
50 carry out information exchange by vehicle CAN communication network and the battery management system 70 and the entire car controller 80, specifically
's：The insulation monitor 50 detects state of insulation result, and transmits insulated monitoring state；The battery management system 70 is controlled
Relay first switch group 30, the control relay second switch group 40 of entire car controller 80；The electrokinetic cell 10, relay
Device first switch group 30, relay second switch group 40 and load 20 form a circuit loop；The relay first switch group
30 include K1 first switches 31 and K2 second switches 32, and the relay second switch group 40 includes K3 the 3rd and switchs 41 and K4 the
Four switches 42；The K1 first switches 31 and the K2 second switches 32 are respectively arranged on what is be connected with power battery anode and negative pole
On loop；The switches of K3 the 3rd 41 are located on the positive pole loop being connected with load 20, the switches of K4 the 4th 42 and K3
3rd switch 41 is in parallel, and the K4 the 4th switchs series connection on 42 place branch roads and is provided with a preliminary filling resistance 43, the battery management
System controls the K1 first switches 31 and the K2 second switches 32 to be opened or closed；The vehicle control unit controls K4 the 4th
The 42 and K3 the 3rd of switch switches 41 are opened or closed；4th switch is preliminary filling relay switch；3rd switch
Switched for high pressure main relay；The mode for integrating resistance method of temperature measurement and low frequency injection method in same set of system is employed, is passed through
Insulation monitor is switched and regulated and controled in real time, and battery-end can be detected before upper high pressure and negative by realizing high-voltage load
Carry the insulaion resistance at end, it is to avoid because only detect battery-end (or load end) and after upper high pressure caused by potential safety hazard；And it is logical
Cross and maximize favourable factors and minimize unfavourable ones, take full advantage of the advantage of resistance method of temperature measurement and low frequency injection method, detected next insulaion resistance is more accelerated
It is fast accurate.Therefore, the utility model method possesses advantage more safe and accurate, rapidly and efficiently.
Fig. 1 is refer to, the power supply 60 is connected with insulation monitor 50 for being powered to whole system, described to supply
The size of power supply 60 is 24V；The ground strap that the insulation monitor 50 is drawn 110 need to be connected with vehicle body；It is described
Vehicle CAN communication network passes through CANH and CAN connections insulation monitor 50, battery management system 70, entire car controller 80 and whole
Other CAN nodes 100 of car, realize that the interaction to insulated monitoring information is transmitted.
It refer in Fig. 2, embodiment, it is a kind of according to new pure electric coach insulation state monitoring system described above
Control method, its step includes：
S1. the main control module 53 controls the passive detection module 51 to detect the state of insulation of electrokinetic cell, and will examine
The state of insulation information measured by the vehicle CAN communication network-feedback to battery management system 70, if state of insulation is normal,
Then the battery management system 70 control K1 first switches 31 and K2 second switches 32 close that (this closure control is in battery management
What system 70 was implemented in the case where detecting battery parameter while meeting the precondition that switch is closed, specifically such as：Battery cell voltage
The parameter such as value, battery stagnation pressure value, battery temperature)；S2. the main control module 53 controls the detection of active detection module 52 load
State of insulation, and by the state of insulation detected by the vehicle CAN communication network-feedback to entire car controller 80, if absolutely
Edge state is normal, then the control of entire car controller 80 K4 the 4th switches 42 first closure (this closure control is in entire car controller
80 detect load parameter while meeting what is implemented under the precondition of switch closure)；Then the preliminary filling resistance 90 carries out pre-
Fill, after preliminary filling terminates, the control of entire car controller 80 K3 the 3rd switches 41 are closed, and its whole circuit is formed height and are pushed back
Road；S3. after 32 groups of 31 groups of the relay K1 first switches and relay K2 second switches have been closed, the main control module is sentenced
Break and whether form high tension loop between the electrokinetic cell and load, if having formed high-tension circuit, described in master control module controls
The state of insulation of passive detection module detection electrokinetic cell (due to forming high tension loop, therefore be equal and detect load simultaneously).
It refer in Fig. 2, embodiment, if the state of insulation that passive detection module 53 is detected described in the S1 steps is not
Normally, then control K1 first switches 31 and K2 second switches 32 remain open and repeat S1 steps；Active inspection described in S2 steps
If the state of insulation that survey module 52 is detected is abnormal, the control switch 41 and K4 the 4th of K3 the 3rd switches 42, which are remained open, lays equal stress on
Multiple S2 steps；If main control module 53 detects the circuit loop and not yet forms high tension loop described in S3 steps, institute is controlled
Passive detection module 51 is stated not take action and repeat S3 steps.
Preferred embodiment of the present utility model is the foregoing is only, it is all at this not to limit the utility model
Within the spirit and principle of utility model, any modification, equivalent substitution and improvements done etc. should be included in the utility model
Within the scope of protection.
Claims (4)
1. a kind of new pure electric coach insulation state monitoring system, it is characterised in that：Including the electrokinetic cell, negative being connected
Load, relay first switch group, relay second switch group, insulation monitor, power supply, battery management system and vehicle control
Device processed；The insulation monitor includes passive detection module, active detection module and main control module, and the passive detection module is led to
Cross the first passive detection end points L1+ and the second passive detection end points L1- is connected with the positive pole of electrokinetic cell with negative pole respectively, institute
State active detection module and pass through the first active detection end points L2- of active detection end points L2+ and second and the two ends phase of the load
Connection；The main control module is used to carry out information exchange and switching at runtime operation nothing with passive detection module and active monitoring modular
Source detection module and active detection module；The insulation monitor passes through vehicle CAN communication network and the battery management system
Information exchange is carried out with the entire car controller；The battery management system control relay first switch group, the vehicle control
Device control relay second switch group processed；The electrokinetic cell, relay first switch group, relay second switch group and load
Form a circuit loop；The relay first switch group includes first switch and second switch, the relay second switch
Group includes the 3rd switch and the 4th switch；The first switch and the second switch are located to be connected with power battery anode and negative pole
On the loop connect；3rd switch is located at loading on the positive pole loop being connected, the 4th switch and the described 3rd switch
It is in parallel, series connection is provided with a preliminary filling resistance on branch road where the 4th switch.
2. a kind of new pure electric coach insulation state monitoring system according to claim 1, it is characterised in that：The electricity
Pond management system controls the first switch and the second switch to be opened or closed；The 3rd described in the vehicle control unit controls
Switch and the described 4th is switched off or closed；4th switch is preliminary filling relay switch；3rd switch is high pressure
Main relay is switched.
3. a kind of new pure electric coach insulation state monitoring system according to claim 1, it is characterised in that：It is described to supply
Power supply is connected with insulation monitor, and the size of the power supply is 24V；The bonding that the insulation monitor is drawn
Line need to be connected with vehicle body.
4. a kind of new pure electric coach insulation state monitoring system according to claim 1, it is characterised in that：It is described whole
Car CAN network passes through CANH and CANL connections insulation monitor, battery management system, entire car controller and vehicle other CAN sections
Point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720039384.7U CN206505154U (en) | 2017-01-13 | 2017-01-13 | A kind of new pure electric coach insulation state monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720039384.7U CN206505154U (en) | 2017-01-13 | 2017-01-13 | A kind of new pure electric coach insulation state monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206505154U true CN206505154U (en) | 2017-09-19 |
Family
ID=59839054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720039384.7U Active CN206505154U (en) | 2017-01-13 | 2017-01-13 | A kind of new pure electric coach insulation state monitoring system |
Country Status (1)
| Country | Link |
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| CN (1) | CN206505154U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108318828A (en) * | 2018-04-28 | 2018-07-24 | 苏州弗尔赛能源科技股份有限公司 | A kind of battery insulation monitoring system of vehicle |
| CN109212316A (en) * | 2018-04-12 | 2019-01-15 | 湖北新日电动车有限公司 | Electric vehicle insulation performance device for fast detecting |
-
2017
- 2017-01-13 CN CN201720039384.7U patent/CN206505154U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109212316A (en) * | 2018-04-12 | 2019-01-15 | 湖北新日电动车有限公司 | Electric vehicle insulation performance device for fast detecting |
| CN108318828A (en) * | 2018-04-28 | 2018-07-24 | 苏州弗尔赛能源科技股份有限公司 | A kind of battery insulation monitoring system of vehicle |
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