CN207318679U - Comprehensive safety detection device - Google Patents
Comprehensive safety detection device Download PDFInfo
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- CN207318679U CN207318679U CN201721312756.5U CN201721312756U CN207318679U CN 207318679 U CN207318679 U CN 207318679U CN 201721312756 U CN201721312756 U CN 201721312756U CN 207318679 U CN207318679 U CN 207318679U
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- comprehensive safety
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Abstract
A kind of comprehensive safety detection device includes cathode relay, anode relay, balanced bridge circuit module, resistive module and MCU module.The both ends of cathode relay have the first gathering line and the second gathering line respectively；The both ends of anode relay have the 3rd gathering line and the 4th gathering line respectively；Balanced bridge circuit module is connected between cathode relay and anode relay；Resistive module is connected between cathode relay and anode relay；And MCU module is connected with resistive module, to carry out short-circuit detecting, Insulation monitoring or adhesion detection.
Description
Technical field
Comprehensive safety detection device is the utility model is related to, espespecially one kind is applied examines safely in BMS (battery management system)
The comprehensive safety detection device of survey.
Background technology
For situation now, the environmental pollution of energy crisis and conventional fuel oil car is serious all the more, for this using battery as
The new energy car of kinetic energy will be needing for future.But since new energy car is past also in Rapid development stage, many security risks
Contact is not prevented effectively, for example relay adhesion is examined when the Insulation monitoring and high pressure power-on and power-off of battery high pressure and vehicle body
Survey.The Insulation monitoring of new energy car is generally divided into two kinds, and one kind is integrated in mainboard, is gone to be responsible for sampling calculating by BMS.Other one
Kind is the insulation module using third party producer.It is also independent to detect widespread practice in this problem in high pressure power-on and power-off adhesion
An external circuit on relay, or with adhesion detection relay, either any mode, is required for external
Many modules or plug-in many circuits, it is costly, and the producer of each detection module is also respectively to have feature, it is difficult to accomplish
Perfectly combined with BMS.
In general, existing technical solution is although provided with various Insulation monitorings and power-on and power-off adhesion detects, but according to
So there are problems that include it is as described below the shortcomings that and：
1st, the existing BMS in part is often integrated in insulation detecting circuit on mainboard for cost consideration, so onboard
Though scheme can reduce cost, final the problem of still going to calculate, bring by the AD samplings CPU of BMS is once CPU loses
Effect, all safety detections fail.
2nd, existing onboard Insulation monitoring is tended not to meet busbar free voltage and appointed due to the limitation of circuit design
The detection of meaning insulation resistance value, this will cause circuit board to have multiple versions and be unfavorable for production and the maintenance in later stage.
3rd, power-on and power-off adhesion detection is not carried out to relay in many existing BMS, there is upper and lower electrical relay
The BMS of adhesion detection is also most of using going to realize in one S relay of parallel connection outside and detection circuit, insulate and two kinds of adhesion
Discrete detection part has often led to the complexity for increasing and connecting up of high-voltaghe compartment inner part, in addition, actually detected when
Also be not reaching to uniformity, it is necessary to have BMS do multiple repairing weld or repeatedly communicated with standalone module could complete detection.
4th, existing Insulation monitoring needs a high pressure to work, so can only after the power-up could be to battery and vehicle body
Do detection of electrical leakage, it is assumed that rear class line electrical leakage is serious, powers on rashly and will appear from unpredictalbe personal safety, also has certainly and passes through
Injection high-frequency signal goes to detect in the case of lower electricity.
5th, the existing BMS using relay control power loop does not do short circuit effective detection, although trying
Just powered on after relevant short circuit and detection of electrical leakage being carried out to vehicle when car.
Therefore, short-circuit detecting, Insulation monitoring or adhesion detection can be carried out at the same time by how providing one kind, and can be by flexible
CAN communication passes to the comprehensive safety detection device of BMS or VCU, is each dealer problem urgently to be resolved hurrily.
Utility model content
In view of the disadvantages of the prior art, the main purpose of the utility model, that is, be that providing one kind can be carried out at the same time
Short-circuit detecting, Insulation monitoring or adhesion detection, and the comprehensive safety inspection of BMS or VCU can be passed to by flexible CAN communication
Survey device.
In order to achieve the above object and other purposes, the utility model provide a kind of comprehensive safety detection device, including just
Pole relay, anode relay, balanced bridge circuit module, resistive module and MCU module.The both ends of cathode relay have respectively
There are the first gathering line and the second gathering line；The both ends of anode relay have the 3rd gathering line and the 4th gathering line respectively；
Balanced bridge circuit module is connected between cathode relay and anode relay；Resistive module is connected across cathode relay and anode
The both ends of relay；And MCU module is connected with resistive module, to carry out short-circuit detecting, Insulation monitoring or adhesion detection.
In one embodiment, comprehensive safety detection device is in the case where high pressure does not power on, and carries out short-circuit detecting or exhausted
Edge detects.
In one embodiment, comprehensive safety detection device is believed with CAN network, RS485 or RS232 to external device (ED) transmission
Breath.
In one embodiment, external device (ED) includes BCU, VCU or BMS.
In one embodiment, MCU module is also monitoring the power-up state of BMS.
In one embodiment, information includes the testing result of short-circuit detecting, Insulation monitoring or adhesion detection.
Compared to the prior art, due to the utility model comprehensive safety detection device by MCU module and cathode after
The first to the 4th gathering line included by electric appliance, anode relay carries out adhesion detection, and passes through MCU module and cathode relay
Device, anode relay, balanced bridge circuit module and resistive module carry out Insulation monitoring or short-circuit detecting, in other words, this practicality
New comprehensive safety detection device can be carried out at the same time short-circuit detecting, Insulation monitoring or adhesion detection.In addition, the utility model
Comprehensive safety detection device can also flexibly with the various communication modes such as CAN network, RS485 or RS232, to BCU, VCU or its
He transmits information at equipment, substantially overcomes possessed problem in the prior art.
Brief description of the drawings
Fig. 1 is the insulation detecting circuit configuration diagram of the comprehensive safety detection device of one embodiment of the utility model；
Fig. 2 is the short-circuit detecting and adhesion detection circuit framework of the comprehensive safety detection device of one embodiment of the utility model
Schematic diagram (by taking cathode relay portion parallel circuit as an example)；
Fig. 3 is the overhaul flow chart of the comprehensive safety detection device of one embodiment of the utility model.
Symbol description：
1 comprehensive safety detection device
10 cathode relays
11 anode relays
12 balanced bridge circuit modules
13 resistive modules
14 MCU modules
S1~S4 steps
Embodiment
Illustrate the embodiment of the utility model by particular specific embodiment below, those skilled in the art can be by
Content disclosed in the present specification understands other advantages and effect of the utility model easily.The utility model also can be by it
He is implemented or is applied different specific embodiments.
Please refer to Fig.1 and Fig. 2, Fig. 1 are electric for the Insulation monitoring of the comprehensive safety detection device of one embodiment of the utility model
Road configuration diagram, Fig. 2 are the short-circuit detecting and adhesion detection electricity of the comprehensive safety detection device of one embodiment of the utility model
Road configuration diagram (by taking cathode relay portion parallel circuit as an example).As shown in the figure, the comprehensive safety detection device of the utility model
1, including cathode relay 10, anode relay 11, balanced bridge circuit module 12, resistive module 13 and MCU module 14.
The both ends of cathode relay 10 have the first gathering line and the second gathering line respectively；The both ends of anode relay 11
There is the 3rd gathering line and the 4th gathering line respectively；Balanced bridge circuit module 12 is connected to cathode relay 10 and anode relay
Between device 11；Resistive module 13 is connected across the both ends of cathode relay 10 and anode relay 11；And MCU module 14 and resistance
Module 13 connects, to carry out short-circuit detecting, Insulation monitoring or adhesion detection.
Specifically, the comprehensive safety detection device 1 of the utility model is concentrated hardware, synchronous protective is set using a kind of
Meter, the hardware circuit design that Insulation monitoring and power-on and power-off adhesion are detected is in one apparatus.In one embodiment, cathode relay
Device 10, anode relay 11 are in BMU control bus.After high pressure on BCU, MCU module 14 start to battery and car body into
Row Insulation monitoring, specifically, MCU module 14 are to calculate insulation resistance value R.Comprehensive safety detection device 1 by CAN network,
Actual insulation performance R values are sent to BCU by the various communication modes such as RS485 or RS232, and BCU is according to all security features
Detected with battery fault-free to determine the actuation of cathode relay 10 and anode relay 11.BCU should be cathode relay at the same time
Device 10, the attracting state of anode relay 11 tell comprehensive safety detection device 1 by CAN network.
In one embodiment, comprehensive safety detection device 1 carrying out the first of adhesion detection to the 4th gathering line point
The both ends of cathode relay 10 and anode relay 11 are not connected across.Make the first gathering line, the second gathering line, the 3rd gathering line and
The voltage of 4th gathering line is respectively V1, V2, V3 and V4, then MCU module 14 only needs to sample this 4 magnitudes of voltage respectively.If
V1=V2, then can be determined that for cathode relay 10 be attracting state at this time, otherwise can be determined that as off-state.Similarly bear
Pole relay 11 is also identical differentiation, if V3=V4, then it can be determined that for anode relay 11 be attracting state at this time, it is no
Then it can be determined that as off-state.
In one embodiment, comprehensive safety detection device 1 can be made PACK and vehicle body in the case where high pressure does not power on
Insulation monitoring and short-circuit detecting, the both ends of cathode relay 10 and anode relay 11 are connected across using a larger resistance,
Whether logical MCU module 14 goes control resistance access, the circuit of a high impedance is so simulated, allows circuit to have a faint electric current
Flow through.So MCU module 14 can the insulation characterisitic of very accurate measure loop and short by balanced bridge circuit module 12
Road situation.
In one embodiment, comprehensive safety detection device 1 is believed with CAN network, RS485 or RS232 to external device (ED) transmission
Breath, furthermore, external device (ED) includes BCU, VCU or BMS.
In one embodiment, MCU module 14 also can be used to the power-up state of monitoring BMS.
Referring to Fig. 3, Fig. 3 is the overhaul flow chart of the comprehensive safety detection device of one embodiment of the utility model.Such as figure
Shown, in one embodiment, MCU module 14 can sequentially carry out step S1 short-circuit detectings, S2 Insulation monitorings and S3 adhesions detection,
And short-circuit detecting, Insulation monitoring or viscous are transmitted to BCU, VCU or BMS with CAN network, RS485 or RS232 respectively in step S4
The even testing result of detection.
In conclusion since the comprehensive safety detection device of the utility model passes through MCU module and cathode relay, negative
The first to the 4th gathering line included by the relay of pole carries out adhesion detection, and passes through MCU module and cathode relay, anode
Relay, balanced bridge circuit module and resistive module carry out Insulation monitoring or short-circuit detecting, in other words, the utility model it is comprehensive
Short-circuit detecting, Insulation monitoring or adhesion detection can be carried out at the same time by closing safety detection device.In addition, the comprehensive safety of the utility model
Detection device can also pass flexibly with the various communication modes such as CAN network, RS485 or RS232 to BCU, VCU or other equipment
Information is passed, substantially overcomes possessed problem in the prior art.
By the description of above preferred embodiment, one skilled in the art, which works as, can more understand that this practicality is new
The feature of type and spirit, only above-described embodiment is only the principles and effects for illustrating the application, and is not used to limitation the application.Cause
This, any modification carried out to above-described embodiment and change are without departing from spirit herein, and the interest field of the application should
As listed by claims.
Claims (6)
1. a kind of comprehensive safety detection device, it is characterised in that the comprehensive safety detection device includes：
Cathode relay, the both ends of the cathode relay have the first gathering line and the second gathering line respectively；
Anode relay, the both ends of the anode relay have the 3rd gathering line and the 4th gathering line respectively；
Balanced bridge circuit module, is connected between the cathode relay and the anode relay；
Resistive module, is connected across the both ends of the cathode relay and the anode relay；And
Microcontroller, is connected with the resistive module, to carry out short-circuit detecting, Insulation monitoring or adhesion detection.
2. comprehensive safety detection device as claimed in claim 1, it is characterised in that the comprehensive safety detection device is in height
In the case that pressure does not power on, the short-circuit detecting or the Insulation monitoring are carried out.
3. comprehensive safety detection device as claimed in claim 1, it is characterised in that the comprehensive safety detection device is with local
Network, serial communication is controlled to transmit information to external device (ED).
4. comprehensive safety detection device as claimed in claim 3, it is characterised in that the external device (ED) includes battery management system
System controller, entire car controller or other electronic control units.
5. comprehensive safety detection device as claimed in claim 4, it is characterised in that the micro-control unit is also to monitor
State the power-up state of battery management system.
6. comprehensive safety detection device as claimed in claim 3, it is characterised in that described information include the short-circuit detecting,
The Insulation monitoring or the testing result of adhesion detection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721312756.5U CN207318679U (en) | 2017-10-12 | 2017-10-12 | Comprehensive safety detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721312756.5U CN207318679U (en) | 2017-10-12 | 2017-10-12 | Comprehensive safety detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207318679U true CN207318679U (en) | 2018-05-04 |
Family
ID=62429895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721312756.5U Active CN207318679U (en) | 2017-10-12 | 2017-10-12 | Comprehensive safety detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207318679U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109669128A (en) * | 2017-10-12 | 2019-04-23 | 江苏兴云新能源有限公司 | Comprehensive safety detection device |
| CN110901449A (en) * | 2019-11-06 | 2020-03-24 | 东风汽车有限公司 | Alternating-current charging stake relay detects and controlling means and alternating-current charging stake |
-
2017
- 2017-10-12 CN CN201721312756.5U patent/CN207318679U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109669128A (en) * | 2017-10-12 | 2019-04-23 | 江苏兴云新能源有限公司 | Comprehensive safety detection device |
| CN110901449A (en) * | 2019-11-06 | 2020-03-24 | 东风汽车有限公司 | Alternating-current charging stake relay detects and controlling means and alternating-current charging stake |
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