CN206684264U - A kind of offline multichannel IT circuit isolation detecting systems - Google Patents
A kind of offline multichannel IT circuit isolation detecting systems Download PDFInfo
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- CN206684264U CN206684264U CN201720469854.3U CN201720469854U CN206684264U CN 206684264 U CN206684264 U CN 206684264U CN 201720469854 U CN201720469854 U CN 201720469854U CN 206684264 U CN206684264 U CN 206684264U
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Abstract
The utility model discloses a kind of offline multichannel IT circuit isolation detecting systems, including the DC DC converters with primary circuit and secondary circuit, there is isolating transformer between the primary circuit and the secondary circuit, the primary circuit is connected by Electricity collecting frame and gauze, and the secondary circuit is connected with battery, motor；Also include insulation tester, the insulation tester is connected with the housing of vehicle body or DC DC converters, insulation tester is connected with controller, controller using circuit respectively with primary circuit, secondary circuit, housing or vehicle body are connected, and disconnecting switch is set on each circuit, sub-line road is connected between circuit, sub-line road is provided with relay, sub-line road on circuit and circuit is independently accessed controller, it is controlled by controller, pass through above technical scheme, all possible insulated channel can be exhaustively detected comprehensively, ensure the operating electrical safety of trolleybus.
Description
Technical field
The utility model is related to technical field of new energy, more particularly to a kind of type insulation monitoring system, suitable for
The IT electrical systems of multi-insulation, such as the double source trolleybus with isolation DC-DC converter.
Background technology
IT electrical systems refer in property point isolated neutral system in the supply, and the exposed conductive part of all devices is passed through
Respective protective wire PE is directly grounded respectively.The following two Insulation monitoring sides of IT electrical system generally uses on the market at present
Formula：The first is the mode of direct current injection, and it is detected by the way of online or offline, and so it is suitable only for exchanging
Electro-detection；It is for second the mode of adaptive low frequency injection, this mode is adapted to direct current or alternating current-direct current mixing (to have direct current inclined
Put or rectifier) or system with abundant harmonic alternating current (such as frequency converter), its online or offline mode.
In technical field of new energy, generally use has the IT electrical systems of multi-insulation, but is using at present
When insulation tester is detected, there is following several big shortcomings in it：First, insulation tester itself only has one-level insulating capacity,
It can not be connected across between the circuit with two-stage or more class B insulations；Secondly, the input resistance of itself during insulation tester on-line checking
Anti- only 2.5M ohms, whole insulation can be pulled down to below 2.5M ohms by being connected across in insulation to be measured, be unable to reach visitor
The demand (usual customer requirement reaches 5M ohms) at family；Finally, insulation tester only has single passage, and detection is not comprehensive, if
Using online insulation tester, it is necessary to which many insulation testers detect, and if using offline insulation tester, it is necessary to
Supporting machinery insulating Design, isolation battery module, isolation signals module etc., cost is very high, and bulky, is unfavorable for
Arrangement.
Utility model content
In order to solve the above-mentioned technical problem, the utility model provides a kind of offline multichannel IT circuit isolation detecting systems.
The technical solution of the utility model is as follows：
A kind of offline multichannel IT circuit isolation detecting systems, including converted with the DC-DC of primary circuit and secondary circuit
Device, has isolating transformer between the primary circuit and the secondary circuit, the primary circuit passes through Electricity collecting frame and gauze
It is connected, the secondary circuit is connected with battery, motor；Also include insulation tester, the insulation tester and vehicle body or
The housing of person's DC-DC converter is connected, and insulation tester is connected with controller, and controller is electric with primary side respectively using circuit
Road, secondary circuit, housing or vehicle body are connected, and disconnecting switch is set on each circuit, and sub-line is connected between circuit
Road, sub-line road are provided with relay, and the sub-line road on circuit and circuit is independently accessed controller, is controlled by controller
System.
Beneficial effect：The utility model is by centered on an insulating monitor, by using controller, and connecting phase
The circuit answered, a type insulation monitoring system is formed, can exhaustively detect all possible insulated channel comprehensively, it is ensured that trackless
The operating electrical safety of electric car, there is higher practicality.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the principle of the first offline multichannel IT circuit isolation detecting system disclosed in the utility model embodiment 1
Structural representation；
Fig. 2 is the first theory structure schematic diagram of the insulating monitoring process disclosed in the utility model embodiment 1；
Fig. 3 is second of theory structure schematic diagram of the insulating monitoring process disclosed in the utility model embodiment 1；
Fig. 4 is the third theory structure schematic diagram of the insulating monitoring process disclosed in the utility model embodiment 1；
Fig. 5 is the principle of second of offline multichannel IT circuit isolation detecting system disclosed in the utility model embodiment 2
Structural representation；
Fig. 6 is the first theory structure schematic diagram of the insulating monitoring process disclosed in the utility model embodiment 2；
Fig. 7 is second of theory structure schematic diagram of the insulating monitoring process disclosed in the utility model embodiment 2；
Fig. 8 is the third theory structure schematic diagram of the insulating monitoring process disclosed in the utility model embodiment 2.
Corresponding component title of the numeral represented by with letter in figure：
1st, gauze；2nd, housing；3rd, vehicle body；4th, primary circuit；5th, secondary circuit；6th, insulation tester；7th, controller；8th,
One disconnecting switch；9th, the second disconnecting switch；10th, the 3rd disconnecting switch；11st, the first relay；12nd, the second relay；13rd, the 3rd
Relay.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
It is described in detail.
, it is necessary to electric energy be obtained from gauze by Electricity collecting frame, to provide power for vehicle, in car in double source trolleybus
There is the IT electrical systems of multiple current potentials in, for example, current potential number is n, then need the quantity of insulation that detects for n* (n-1)/
2, in double source trolleybus, there is the structure of DC-DC converter, its primary circuit is a current potential, and secondary circuit is one
Current potential, the housing of DC-DC converter is a current potential, and the vehicle body of vehicle is a current potential, therefore license has 4 current potentials, also
It is to say, it is necessary to 6 insulating monitoring points.When being detected by the way of traditional, due to the primary circuit of DC-DC converter,
It is two class B insulations between the vehicle body of secondary circuit, housing and vehicle, if insulation tester is persistently connected across 3 two-stage insulated wires
Lu Shang, two class B insulations can be caused to become a class B insulation, cause electrical safety risk.
The technical program is using an insulation tester as core, by setting new circuit structure, is formed complete exhausted
Edge detecting system, can quickly, safety carry out complete detection.
Embodiment 1
The first offline multichannel IT circuit isolation detecting system, including gauze 1, the Electricity collecting frame being connected with gauze 1, the collection
Electric frame is used to obtain electric energy from gauze 1, and the Electricity collecting frame is connected with DC-DC converter, the electric energy that will can be obtained from gauze 1
The DC-DC converter is transferred to, the DC-DC converter is connected with dynamical systems such as the battery on vehicle and motors.
The DC-DC converter includes housing 2, and primary circuit 4, secondary circuit 5 are disposed with the housing 2, described
Security isolation is carried out by isolating transformer between primary circuit 4 and the secondary circuit 5.The primary circuit 4 and the collection
Electric frame is connected, and the secondary circuit 5 connects respectively with the battery, motor.
Also include an insulation tester 6, the insulation tester 6 is connected with line controller 7, the Insulation monitoring
Instrument 6 is fixed on the housing 2 of DC-DC converter, and is connected with the housing 2 of DC-DC converter by circuit.
The line controller 7 draws single line to the primary circuit 4, and the first disconnecting switch 8 is housed on the circuit,
First disconnecting switch 8 can be controlled by the line controller 7, so as to control the insulation tester 6 and the original
The break-make of side circuit 4.
The line controller 7 draws single line to the secondary circuit 5, and the second disconnecting switch 9 is housed on the circuit,
Second disconnecting switch 9 can be controlled by the line controller 7, so as to control the insulation tester 6 and the pair
The break-make of side circuit 5.
The line controller 7 draws single line to the vehicle body 3, and the 3rd disconnecting switch 10 is housed on the circuit, leads to
The 3rd disconnecting switch 10 can be controlled by crossing the line controller 7, so as to control the insulation tester 6 and the vehicle body
3 break-make.
A sub- circuit is connected with the circuit of line controller 7 and primary circuit 4, the is provided with the sub-line road
One relay 11, the other end on sub-line road are connected with vehicle body 3.
A sub- circuit is connected with the circuit of line controller 7 and secondary circuit 5, the is provided with the sub-line road
Two relays 12, the other end on sub-line road are connected with vehicle body 3.
A sub- circuit is connected with the circuit of line controller 7 and vehicle body 3, the 3rd relay is housed on the sub-line road
Device 13, the other end on sub-line road are connected with vehicle body 3.
It is described in detail with reference to specific Insulation monitoring process：Connect the connecting line of insulation tester 6 and shell
Road, is able to detect that the insulation values of shell by insulation tester 6, forms a reference point, and the is controlled respectively by controller 7
One disconnecting switch 8, the second disconnecting switch 9 and the 3rd disconnecting switch 10 are opened, and primary circuit is can be derived that by insulation tester 6
4 for the insulation values of shell, secondary circuit 5 for shell insulation values and vehicle body 3 for shell insulation values.
By using controller 7, the first relay 11 is controlled, primary circuit 4 is connected with shell, by using insulation
Detector 6 is able to detect that insulation values, forms a reference point, the second disconnecting switch 9 and the 3rd is controlled respectively by controller 7
Disconnecting switch 10 is opened, and detects secondary circuit 5 again using insulation tester 6 to shell, vehicle body 3 to two insulating points of shell,
Primary circuit 4 can be obtained indirectly to secondary circuit 5, primary circuit 4 to the results of 3 two insulating points of vehicle body.
By using controller 7, the second relay 12 is controlled, secondary circuit 5 is connected with shell, by using insulation
Detector 6 is able to detect that insulation values, forms a reference point, by controlling the 3rd disconnecting switch 10 to open, is examined using insulation
Survey instrument 6 and detect insulation values of the vehicle body 3 to shell again, the measurement result that secondary circuit 5 insulate to vehicle body 3 can be obtained indirectly.
Same reason, vehicle body 3 can also be connected with shell, by using exhausted by controlling the 3rd relay 13
Edge detector 6 is able to detect that insulation values, forms a reference point, by controlling the second disconnecting switch 9 to open, is examined using insulation
Survey instrument 6 and detect insulation values of the secondary circuit 5 to shell again, can also obtain the measurement that secondary circuit 5 insulate to vehicle body 3 indirectly
As a result.
The technical program is applied to insulation tester 6 being arranged near trolleybus Electricity collecting frame or DC-DC converter, inspection
Entire car controller 7 (VCU) or energy management unit can be delivered to by the CAN module of high isolation or the switch of high isolation by surveying result
(EMU)。
The technical program solves the problem for perplexing trolleybus Insulation monitoring for a long time, can exhaustively examine comprehensively
Survey all possible insulated channel, it is ensured that the operating electrical safety of trolleybus, there is higher practicality.
In the present embodiment, the relay uses switch type relay, therefore above three current potential is being connected with shell
Meanwhile the detection insulated between shell will not be participated in again, while the testing result of insulation tester 6 can pass through high isolation
The relay of CAN module or high isolation reaches VCU or EMU in the current potential of vehicle body 3, to realize to vehicle body 3 relative to other electricity
The detection of position, is not particularly limited herein.
Embodiment 2
Second of offline multichannel IT circuit isolation detecting system, including gauze 1, the Electricity collecting frame being connected with gauze 1, the collection
Electric frame is used to obtain electric energy from gauze 1, and the Electricity collecting frame is connected with DC-DC converter, the electric energy that will can be obtained from gauze 1
The DC-DC converter is transferred to, the DC-DC converter is connected with dynamical systems such as the battery on vehicle and motors.
The DC-DC converter includes housing 2, and primary circuit 4, secondary circuit 5 are disposed with the housing 2, described
Security isolation is carried out by isolating transformer between primary circuit 4 and the secondary circuit 5.The primary circuit 4 and the collection
Electric frame is connected, and the secondary circuit 5 connects respectively with the battery, motor.
Difference from Example 1 is, in addition to an insulation tester 6, and the insulation tester 6 controls with circuit
Device 7 is connected, and the insulation tester 6 is fixed on vehicle body 3, and is connected with vehicle body 3 by circuit.
The line controller 7 draws single line to the primary circuit 4, and the first disconnecting switch 8 is housed on the circuit,
First disconnecting switch 8 can be controlled by the line controller 7, so as to control the insulation tester 6 and the original
The break-make of side circuit 4.
The line controller 7 draws single line to the secondary circuit 5, and the second disconnecting switch 9 is housed on the circuit,
Second disconnecting switch 9 can be controlled by the line controller 7, so as to control the insulation tester 6 and the pair
The break-make of side circuit 5.
The line controller 7 draws single line to the housing 2, and the 3rd disconnecting switch 10 is housed on the circuit, leads to
The 3rd disconnecting switch 10 can be controlled by crossing the line controller 7, so as to control the insulation tester 6 and the housing
2 break-make.
A sub- circuit is connected with the circuit of line controller 7 and primary circuit 4, the is provided with the sub-line road
One relay 11, the other end on sub-line road are connected with housing 2.
A sub- circuit is connected with the circuit of line controller 7 and secondary circuit 5, the is provided with the sub-line road
Two relays 12, the other end on sub-line road are connected with housing 2.
A sub- circuit is connected with the circuit of line controller 7 and vehicle body 3, the 3rd relay is housed on the sub-line road
Device 13, the other end on sub-line road are connected with housing 2.
It is described in detail with reference to specific Insulation monitoring process：Connect the connecting line of insulation tester 6 and shell
Road, the insulation values of vehicle body 3 are able to detect that by insulation tester 6, form a reference point, controlled respectively by controller 7
First disconnecting switch 8, the second disconnecting switch 9 and the 3rd disconnecting switch 10 are opened, and primary side electricity is can be derived that by insulation tester 6
Road 4 for the insulation values of vehicle body 3, secondary circuit 5 for vehicle body 3 insulation values and shell for vehicle body 3 insulation values.
By using controller 7, the 3rd relay 13 is controlled, shell and vehicle body 3 are connected, by using Insulation monitoring
Instrument 6 is able to detect that insulation values, forms a reference point, and the first disconnecting switch 8 and the second isolation are controlled respectively by controller 7
Switch 9 is opened, and detects primary circuit 4 again using insulation tester 6 to vehicle body 3, secondary circuit 5 to 3 two insulating points of vehicle body,
Primary circuit 4 can be obtained indirectly to shell, secondary circuit 5 to the results of two insulating points of shell.
By using controller 7, the first relay 11 is controlled, primary circuit 4 and vehicle body 3 are connected, by using exhausted
Edge detector 6 is able to detect that insulation values, forms a reference point, by controlling the second disconnecting switch 9 to open, is examined using insulation
Survey instrument 6 and detect insulation values of the secondary circuit 5 to vehicle body 3 again, can obtain what primary circuit 4 insulated to secondary circuit 5 indirectly
Measurement result.
Same reason, secondary circuit 5 and vehicle body 3 can also be connected, pass through profit by controlling the second relay 12
Insulation values are able to detect that with insulation tester 6, form a reference point, by controlling the first disconnecting switch 8 to open, using exhausted
Edge detector 6 detects insulation values of the primary circuit 4 to vehicle body 3 again, can also obtain primary circuit 4 indirectly to secondary circuit 5
The measurement result of insulation.
The technical program is applied to insulation tester and is arranged in the driver's cabin of vehicle, it is offline after insulation tester be in
Vehicle body current potential, no electrical safety problems.
Above-described is only preferred embodiment of the present utility model, it is noted that for the ordinary skill of this area
For personnel, on the premise of not departing from the utility model and creating design, various modifications and improvements can be made, these all belong to
In the scope of protection of the utility model.
Claims (1)
1. a kind of offline multichannel IT circuit isolation detecting systems, it is characterised in that including with primary circuit and secondary circuit
DC-DC converter, has isolating transformer between the primary circuit and the secondary circuit, the primary circuit passes through current collection
Frame is connected with gauze, and the secondary circuit is connected with battery, motor；Also include insulation tester, the insulation tester
It is connected with the housing of vehicle body or DC-DC converter, insulation tester is connected with controller, and controller is distinguished using circuit
With primary circuit, secondary circuit, housing or vehicle body are connected, and disconnecting switch is set on each circuit, are connected between circuit
It is connected to sub-line road, sub-line road is provided with relay, and the sub-line road on circuit and circuit is independently accessed controller, passes through controller
It is controlled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720469854.3U CN206684264U (en) | 2017-04-24 | 2017-04-24 | A kind of offline multichannel IT circuit isolation detecting systems |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720469854.3U CN206684264U (en) | 2017-04-24 | 2017-04-24 | A kind of offline multichannel IT circuit isolation detecting systems |
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| Publication Number | Publication Date |
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| CN206684264U true CN206684264U (en) | 2017-11-28 |
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| CN201720469854.3U Active CN206684264U (en) | 2017-04-24 | 2017-04-24 | A kind of offline multichannel IT circuit isolation detecting systems |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112485612A (en) * | 2020-11-13 | 2021-03-12 | 凯博易控车辆科技(苏州)股份有限公司 | Monitoring system and method for improving insulating property of isolated double-source trolley bus |
-
2017
- 2017-04-24 CN CN201720469854.3U patent/CN206684264U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112485612A (en) * | 2020-11-13 | 2021-03-12 | 凯博易控车辆科技(苏州)股份有限公司 | Monitoring system and method for improving insulating property of isolated double-source trolley bus |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 215100 South of Yingbin West Road, Luzhi Town, Wuzhong District, Suzhou City, Jiangsu Province Patentee after: Kaibo Controllable Drive (Suzhou) Co., Ltd. Address before: 215211 No. 666 Fenyue Road, Fenhu High-tech Development Zone, Wujiang City, Jiangsu Province Patentee before: SUZHOU KAIBO YIKONG DRIVE TECHNOLOGY CO., LTD. |
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| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: No. 999, Yingbin West Road, Luzhi Town, Wuzhong District, Suzhou City, Jiangsu Province Patentee after: Capotech (Suzhou) Co., Ltd Address before: 215100 the southern side of Yingbin West Road, Luzhi Town, Wuzhong District, Suzhou, Jiangsu Patentee before: Kaibo Controllable Drive (Suzhou) Co., Ltd. |