CN206312832U - High-voltage DC contactor auxiliary contact detecting system - Google Patents
High-voltage DC contactor auxiliary contact detecting system Download PDFInfo
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- CN206312832U CN206312832U CN201621346696.4U CN201621346696U CN206312832U CN 206312832 U CN206312832 U CN 206312832U CN 201621346696 U CN201621346696 U CN 201621346696U CN 206312832 U CN206312832 U CN 206312832U
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- auxiliary contact
- state
- voltage
- level
- contactor
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Abstract
The utility model provides a kind of high-voltage DC contactor auxiliary contact detecting system, including auxiliary contact, the first detection circuit, BMS main frames, the second detection circuit and automatic test fixture；Auxiliary contact can be switched between first state and the second state；First detection circuit is connected between auxiliary contact and BMS main frames, and one end of the second detection circuit is connected between auxiliary contact and the first detection circuit, and the other end is connected with automatic test fixture；When auxiliary contact are in first state, first detects the level of circuit output first to BMS main frames, and second detects circuit output second electrical level to automatic test fixture；When auxiliary contact are in the second state, first detects circuit output second electrical level to BMS main frames, and second detects the level of circuit output first to automatic test fixture.The reliability and stability of the high-voltage DC contactor auxiliary contact detecting system that the utility model is provided is higher.
Description
【Technical field】
The utility model is related to electric vehicle engineering field, more particularly to a kind of detection of high-voltage DC contactor auxiliary contact
System.
【Background technology】
In BMS (Battery Management System, battery management system) Main Control Tank bus electric circuit, generally
Need multiple high-voltage DC contactors to complete different systems switching tasks, existing high-voltage DC contactor is equipped with auxiliary
Help contact, BMS main frames ensure vehicle by the state that judges the state of auxiliary contact to judge the high-voltage DC contactor
Stable operation.
Except BMS main frames, it is also required to judge the state of high-voltage DC contactor in automatic test fixture and can not influences
The normal operation of BMS, current way is BMS main frames by CAN (Controller Area Network, controller LAN
Network) bus transmits a signal to automatic test fixture, however, because CAN protocol is every sending signal at regular intervals, entering
And cause the automatic test fixture can not in time to obtain information, and in order to match with CAN, automatic test fixture is also needed
CAN controller is configured, so as to increased the hardware of automatic testing tool and the complexity of software.If additionally, CAN is total
When data congestion occurs in line, the MCU of automatic testing tool can't directly filter out important information, in turn result in data and receive to prolong
When or erroneous judgement.
In consideration of it, real be necessary to provide a kind of new high-voltage DC contactor auxiliary contact detecting system to overcome above-mentioned lacking
Fall into.
【Utility model content】
The purpose of this utility model is to provide a kind of high-voltage DC contactor auxiliary contact detecting system, and the HVDC connects
Tentaculum auxiliary contact detecting system avoids carrying out data transmission using CAN, improve system detectio stability and can
By property.
To achieve these goals, the utility model provides a kind of high-voltage DC contactor auxiliary contact detecting system, bag
Include auxiliary contact, the first detection circuit, BMS main frames, the second detection circuit and automatic test fixture；The auxiliary contact should
For in high-voltage DC contactor to determine the state of high-voltage DC contactor, and can first state and the second state it
Between switch over；The first detection circuit is connected between the auxiliary contact and the BMS main frames, and it is used to detect institute
The state of auxiliary contact is stated, and by the State Transferring where the auxiliary contact for corresponding level is exported to the BMS main frames；
The BMS main frames are used to receive the level of the first detection circuit output, and determine the auxiliary contact according to the level
State；One end of the second detection circuit is connected between the auxiliary contact and the first detection circuit, and another
End is connected with the automatic test fixture；The second detection circuit is used to detecting the state of the auxiliary contact, and by institute
State Transferring where stating auxiliary contact is exported to the automatic test fixture for corresponding level；The automatic test work
Fill for receiving the level of the second detection circuit output, and the state of the auxiliary contact is determined according to the level；When
When the auxiliary contact are in first state, the first detection level of circuit output first to the BMS main frames, and described the
Two detect circuit output second electrical levels to the automatic test fixture；It is described when the auxiliary contact are in the second state
First detection circuit output second electrical level to the BMS main frames, and the second detection level of circuit output first to it is described from
Dynamicization test fixture.
In a preferred embodiment, the first state is off-state；Second state is closure state.
In a preferred embodiment, first level is low level；The second electrical level is high level.
In a preferred embodiment, the auxiliary contact include switch, and the first detection circuit includes that first is straight
Stream power supply, first resistor and the first diode；The positive pole of first dc source is connected with one end of the switch, and institute
The negative pole for stating the first dc source is connected with the negative electrode of first diode, and the other end of the switch is by the described first electricity
Resistance is connected with the anode of first diode, and the negative electrode of first diode is also connected with the BMS main frames.
In a preferred embodiment, the switch is mechanical switch.
In a preferred embodiment, first diode is light emitting diode.
In a preferred embodiment, the second detection circuit includes electronic switch, second resistance, the two or two pole
Pipe, the second dc source and 3rd resistor；The first end of the electronic switch is connected with the positive pole of first dc source,
Second end of the electronic switch is connected between the switch and the first resistor by the second resistance, the electronics
3rd end of switch is connected with the anode of second diode, the negative electrode of second diode and the automatic test work
Pretend company；The positive pole of second dc source is connected with the first end of the electronic switch；Second dc source it is negative
Pole is connected by the 3rd resistor with the negative electrode of second diode.
In a preferred embodiment, second diode is light emitting diode.
In a preferred embodiment, the first end of the electronic switch, the second end and the 3rd end correspond to three respectively
The emitter stage of pole pipe, base stage and colelctor electrode.
In a preferred embodiment, the triode is PNP type triode.
The high-voltage DC contactor auxiliary contact detecting system that the utility model is provided, the automatic test fixture passes through
Second detection circuit directly judges the state of the auxiliary contact, is in same priority with the BMS main frames, and then increased
The reliability and stability of automatic testing tool detection.Additionally, can also be avoided using the second detection electric circuit inspection auxiliary contact
The hardware and the resource of software used using CAN bus system, so as to reduce cost, while reducing to described automatic
The MCU requirements of test fixture.
【Brief description of the drawings】
The functional block diagram of the high-voltage DC contactor auxiliary contact detecting system that Fig. 1 is provided for the utility model.
The circuit theory diagrams of the high-voltage DC contactor auxiliary contact detecting system that Fig. 2 is provided for the utility model.
【Specific embodiment】
In order that the purpose of this utility model, technical scheme and Advantageous Effects become apparent from understanding, below in conjunction with
Accompanying drawing in the utility model embodiment, is clearly and completely described to the technical scheme in the utility model embodiment, shows
So, described embodiment is only a part of embodiment of the utility model, rather than whole embodiments.It is new based on this practicality
Embodiment in type, the every other implementation that those of ordinary skill in the art are obtained under the premise of creative work is not made
Example, belongs to the scope of the utility model protection.
When an element was considered as with another element " being connected ", it can be directly to another element or
May be simultaneously present centering elements.Unless otherwise defined, all of technologies and scientific terms used here by the article with belong to this reality
The implication being generally understood that with new those skilled in the art is identical.Made in specification of the present utility model herein
Term is intended merely to describe the purpose of specific embodiment, it is not intended that in limitation the utility model.
Fig. 1 is referred to, the function of its high-voltage DC contactor auxiliary contact detecting system 100 provided for the utility model
Module map.The high-voltage DC contactor auxiliary contact detecting system 100 includes that auxiliary contact 10, first detect circuit 20, BMS
Main frame 30, second detects circuit 40 and automatic test fixture 50.
The auxiliary contact 10 are applied in high-voltage DC contactor determine the state of high-voltage DC contactor.In this reality
Apply in mode, the auxiliary contact 10 can be switched between first state and the second state.Wherein, first shape
State is off-state；Second state is closure state.
The first detection circuit 20 is connected between the auxiliary contact 10 and the BMS main frames 30.Described first
Detection circuit 20 is used to detect the state of the auxiliary contact 10, and is corresponding by the State Transferring where the auxiliary contact 10
Level export to the BMS main frames 30.In the present embodiment, it is described when the auxiliary contact 10 are in first state
The first state is converted to the first level and exported to the BMS main frames 30 by the first detection circuit 20；When the auxiliary is touched
When point 10 is in the second state, second State Transferring is second electrical level and output to described by the first detection circuit 20
BMS main frames 30.Wherein, first level is low level；The second electrical level is high level.
The BMS main frames 30 are used to receive the level of the first detection output of circuit 20, and determine according to the level
The state of the auxiliary contact 10, and then judge whether the high-voltage DC contactor is abnormal.
One end of the second detection circuit 40 is connected between the auxiliary contact 10 and the first detection circuit 20,
And the other end is connected with the automatic test fixture 50.The second detection circuit 40 is used to detect the auxiliary contact 10
State, and by the State Transferring where the auxiliary contact 10 for corresponding level is exported to the automatic test fixture 50.
In the present embodiment, when the auxiliary contact 10 are in first state, described second detects circuit 40 by first shape
State is converted to the second electrical level and exports to the automatic test fixture 50；When the auxiliary contact 10 are in the second state
When, second State Transferring is the first level and exported to the automatic test fixture by the second detection circuit 40
50。
The automatic test fixture 50 is used to receive the level of the second detection output of circuit 40, and according to the electricity
It is flat to determine the state of the auxiliary contact 10, and then judge whether the high-voltage DC contactor is abnormal.
It is the circuit of the high-voltage DC contactor auxiliary contact detecting system 100 that the utility model is provided referring again to Fig. 2
Schematic diagram.The auxiliary contact 10 include switch S.In the present embodiment, the switch S is mechanical switch.First inspection
Slowdown monitoring circuit 20 includes the first dc source V1, first resistor R1 and the first diode D1.The first dc source V1 is just
Pole is connected with one end of the switch S, and the negative pole of the first dc source V1 and the first diode D1 negative electrode phase
Even.The other end of the switch S is connected by the first resistor R1 with the anode of the first diode D1.Further,
The negative electrode of the first diode D1 is also connected with the BMS main frames 30.In the present embodiment, the first diode D1 is
Light emitting diode.
The second detection circuit 40 includes electronic switch Q1, second resistance R2, the second diode D2, the one or two direct current
Source V2 and 3rd resistor R3.The first end of the electronic switch Q1 is connected with the positive pole of the first dc source V1, described
Second end of electronic switch Q1 is connected between the switch S and the first resistor R1 by the second resistance R2, described
3rd end of electronic switch Q1 is connected with the anode of the second diode D2, the negative electrode of the second diode D2 with it is described from
Dynamicization test fixture 50 is connected.The positive pole of the second dc source V2 is connected with the first end of the electronic switch Q1；It is described
The negative pole of the second dc source V2 is connected by the 3rd resistor R3 with the negative electrode of the second diode D2.In this embodiment party
In formula, the second diode D2 is light emitting diode.The first end of the electronic switch Q1, the second end and the 3rd end difference
Correspond to emitter stage, base stage and the colelctor electrode of PNP type triode.
The operation principle of the high-voltage DC contactor auxiliary contact detecting system 100 that will be provided the utility model below is entered
Row explanation.
When the auxiliary contact 10 are off (first state), the first diode D1 cut-offs, therefore, it is described
BMS main frames 30 receive low level (the first level)；Now, the emitter voltage of the electronic switch Q1 is more than base voltage,
The electronic switch Q1 conductings, and then cause the second diode D2 to turn on, the automatic test fixture 50 receives height
Level (second electrical level).When the auxiliary contact 10 are in closure state (the second state), the first diode D1 conductings,
Therefore, the BMS main frames 30 receive high level (second electrical level)；Now, the emitter voltage of the electronic switch Q1 is little
In base voltage, the electronic switch Q1 cut-offs, and then cause the second diode D2 to end, the automatic test fixture
50 receive low level (the first level).It is appreciated that judging the auxiliary when the BMS main frames 30 receive the first level
Contact 10 is off-state, and the automatic test fixture 50 just judges that the auxiliary contact 10 are when receiving second electrical level
Off-state.The BMS main frames 30 are opposite with the decision logic of the automatic test fixture 50.
The detecting system 100 of the high-voltage DC contactor auxiliary contact that the utility model is provided, the automatic test work
50 states that the auxiliary contact 10 are directly judged by the second detection circuit 40 are filled, is in the BMS main frames 30 same excellent
First level, and then increased the reliability and stability of the detection of automatic testing tool 50.Additionally, being detected using the second detection circuit 40
Auxiliary contact 10, can also avoid the resource of the hardware and software used using CAN bus system, so as to reduce into
This, while reducing the MCU requirements to the automatic testing tool 50.
The utility model is not restricted to described in specification and implementation method, therefore for the personnel of familiar field
For be easily achieved additional advantage and modification, therefore in the universal limited without departing substantially from claim and equivalency range
Spirit and scope in the case of, the utility model be not limited to specific details, representational equipment and shown here as with retouch
The examples shown stated.
Claims (10)
1. a kind of high-voltage DC contactor auxiliary contact detecting system, it is characterised in that：Including auxiliary contact, the first detection electricity
Road, BMS main frames, the second detection circuit and automatic test fixture；The auxiliary contact are applied in high-voltage DC contactor
To determine the state of high-voltage DC contactor, and can be switched between first state and the second state；Described first
Detection circuit is connected between the auxiliary contact and the BMS main frames, its state for being used to detect the auxiliary contact, and
By the State Transferring where the auxiliary contact for corresponding level is exported to the BMS main frames；The BMS main frames are used to receive
The level of the first detection circuit output, and the state of the auxiliary contact is determined according to the level；Second detection
One end of circuit is connected between the auxiliary contact and the first detection circuit, and the other end and the automatic test work
Pretend company；The second detection circuit is used to detecting the state of the auxiliary contact, and by the state where the auxiliary contact
Corresponding level is converted to export to the automatic test fixture；The automatic test fixture is used to receive second inspection
The level of slowdown monitoring circuit output, and the state of the auxiliary contact is determined according to the level；When the auxiliary contact are in first
During state, the first detection level of circuit output first to the BMS main frames, and the second electricity of the second detection circuit output
Put down to the automatic test fixture；When the auxiliary contact are in the second state, the first detection circuit output second
Level is to the BMS main frames, and the second detection level of circuit output first is to the automatic test fixture.
2. high-voltage DC contactor auxiliary contact detecting system as claimed in claim 1, it is characterised in that：The first state
It is off-state；Second state is closure state.
3. high-voltage DC contactor auxiliary contact detecting system as claimed in claim 2, it is characterised in that：First level
It is low level；The second electrical level is high level.
4. high-voltage DC contactor auxiliary contact detecting system as claimed in claim 1, it is characterised in that：The auxiliary contact
Including switch, the first detection circuit includes the first dc source, first resistor and the first diode；First direct current
The positive pole of power supply is connected with one end of the switch, and the negative pole of first dc source and first diode negative electrode
It is connected, the other end of the switch is connected by the first resistor with the anode of first diode, the one or two pole
The negative electrode of pipe is also connected with the BMS main frames.
5. high-voltage DC contactor auxiliary contact detecting system as claimed in claim 4, it is characterised in that：The switch is machine
Tool is switched.
6. high-voltage DC contactor auxiliary contact detecting system as claimed in claim 4, it is characterised in that：One or two pole
It is light emitting diode to manage.
7. high-voltage DC contactor auxiliary contact detecting system as claimed in claim 4, it is characterised in that：Second detection
Circuit includes electronic switch, second resistance, the second diode, the second dc source and 3rd resistor；The electronic switch
First end is connected with the positive pole of first dc source, and the second end of the electronic switch is connected to by the second resistance
Between the switch and the first resistor, the 3rd end of the electronic switch is connected with the anode of second diode, institute
The negative electrode for stating the second diode is connected with the automatic test fixture；The positive pole of second dc source and the electronic cutting
The first end of pass is connected；The negative electrode phase that the negative pole of second dc source passes through the 3rd resistor and second diode
Even.
8. high-voltage DC contactor auxiliary contact detecting system as claimed in claim 7, it is characterised in that：Two or two pole
It is light emitting diode to manage.
9. high-voltage DC contactor auxiliary contact detecting system as claimed in claim 7, it is characterised in that：The electronic switch
First end, the second end and the 3rd end correspond to emitter stage, base stage and the colelctor electrode of triode respectively.
10. high-voltage DC contactor auxiliary contact detecting system as claimed in claim 9, it is characterised in that：The triode
It is PNP type triode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621346696.4U CN206312832U (en) | 2016-12-08 | 2016-12-08 | High-voltage DC contactor auxiliary contact detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621346696.4U CN206312832U (en) | 2016-12-08 | 2016-12-08 | High-voltage DC contactor auxiliary contact detecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206312832U true CN206312832U (en) | 2017-07-07 |
Family
ID=59250463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621346696.4U Active CN206312832U (en) | 2016-12-08 | 2016-12-08 | High-voltage DC contactor auxiliary contact detecting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206312832U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107685032A (en) * | 2017-08-14 | 2018-02-13 | 苏州新视野自动化科技有限公司 | High-voltage DC contactor all-round property testing streamline |
-
2016
- 2016-12-08 CN CN201621346696.4U patent/CN206312832U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107685032A (en) * | 2017-08-14 | 2018-02-13 | 苏州新视野自动化科技有限公司 | High-voltage DC contactor all-round property testing streamline |
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Effective date of registration: 20180428 Granted publication date: 20170707 |
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| PD01 | Discharge of preservation of patent |
Date of cancellation: 20210428 Granted publication date: 20170707 |
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