CN108466553A - A kind of electric automobile high-voltage interlocking loop of multibreak monitoring - Google Patents
A kind of electric automobile high-voltage interlocking loop of multibreak monitoring Download PDFInfo
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- CN108466553A CN108466553A CN201810278119.3A CN201810278119A CN108466553A CN 108466553 A CN108466553 A CN 108466553A CN 201810278119 A CN201810278119 A CN 201810278119A CN 108466553 A CN108466553 A CN 108466553A
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- voltage
- resistance
- electric automobile
- bridge
- multibreak
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The invention discloses a kind of electric automobile high-voltage interlocking loops of multibreak detection, including voltage detecting circuit, voltage modulate circuit and electronic control unit ECU；Voltage detecting circuit one end is electrically connected with low-tension supply Vcc, and the other end is electrically connected with voltage modulate circuit, and voltage modulate circuit is electrically connected with electronic control unit ECU；Voltage detecting circuit includes multiple voltage detection units of concatenation, each voltage detection unit includes the bridge and resistance being connected in parallel, the resistance value of the resistance of different voltages detection unit is different, bridge high-tension connector corresponding with high voltage loop of electric automobile integrates, and is disconnected prior to high-tension connector when disconnection.When multiple bridges are disconnected with various combination, electronic control unit judges the integrality of electric automobile high-voltage interlocking loop by the data that voltage modulate circuit transmits, and be accurately positioned out which or which high-tension connector and failure occur, provide reference for the repair and troubleshooting of high voltage loop of electric automobile.
Description
Technical field
The invention belongs to the electronic vapour that electric automobile high-voltage safety control technology field more particularly to a kind of multibreak monitor
Overall height presses interlocking loop.
Background technology
Electric automobile high-voltage interlocking loop is a kind of safe design measure monitoring high tension loop integrality with low-voltage signal,
Its monitoring objective is the high-tension connector for needing manual operation to realize circuit connecting and disconnecting in electric vehicle.It powers on and opens in vehicle
In dynamic or charging process, if high-voltage interlocking circuit detects that high tension loop is imperfect, system can not power on or charge, and avoid
Because the problems such as virtual connection, causes the accident；If vehicle collision causes, high-tension connector loosens or maintenance worker is due to accidentally grasping
High-tension connector is caused to loosen, it is electric under execution system by being detected to high-voltage interlocking signal, to reduce the general of risk generation
Rate.
Connect currently, the high-voltage interlocking circuit used on electric vehicle can not be pin-pointed to which or which high pressure
It connects device to occur loosening, is unfavorable for repair and the troubleshooting of high voltage loop of electric automobile.
Invention content
In order to overcome above-mentioned the deficiencies in the prior art, present invention solves the technical problem that being to provide a kind of multibreak
The electric automobile high-voltage interlocking loop of point monitoring, is accurately positioned out the high-tension connector position of failure, is that electric vehicle is high
The repair and troubleshooting for pushing back road provide reference.
In order to solve the above technical problems, the technical solution adopted in the present invention is：A kind of electric vehicle of multibreak monitoring
High-voltage interlocking circuit, the high-voltage interlocking circuit include voltage detecting circuit, voltage modulate circuit and electronic control unit ECU；
Described voltage detecting circuit one end is electrically connected with low-tension supply Vcc, and the other end is electrically connected with the voltage modulate circuit
It connects, the voltage modulate circuit is electrically connected with the electronic control unit ECU；
The voltage detecting circuit includes multiple voltage detection units of concatenation, and each voltage detection unit includes simultaneously
Join the bridge and resistance of connection, the resistance value of the resistance of the different voltage detection units is different, the bridge and electricity
Corresponding high-tension connector integrates in electrical automobile high tension loop, and is disconnected prior to the high-tension connector when disconnection.
Further, the voltage detecting circuit and the tie point of the voltage modulate circuit and the voltage of earth point are described
Detection the voltage Uo1, the detection voltage Uo1 of voltage detecting circuit are connected to the electricity after voltage modulate circuit adjustment
Control the A/D translation interfaces of unit ECU.
Further, the voltage modulate circuit include resistance R5, with the concatenated resistance R6 of the resistance R5 and with the electricity
The capacitance C of R6 parallel connections is hindered, one end of the resistance R5 is electrically connected with the voltage detecting circuit, a termination of the resistance R6
The voltage on ground, the tie point and earth point of the resistance R5 and the resistance R6 is adjustment voltage, and the adjustment voltage is described
The analog input voltage Uo of electronic control unit ECU.
Further, the voltage detecting circuit includes the first voltage detection unit of concatenation, second voltage detection unit, and the
Three voltage detection units and the 4th voltage detection unit；
The first voltage detection unit includes resistance R1, the bridge JP1 in parallel with the resistance R1；Second electricity
Pressure detection unit include and the concatenated resistance R2 of the resistance R1, the bridge JP2 in parallel with the resistance R2；The third electricity
Pressure detection unit include and the concatenated resistance R3 of the resistance R2, the bridge JP3 in parallel with the resistance R3；4th electricity
Pressure detection unit include and the concatenated resistance R4 of the resistance R3, the bridge JP4 in parallel with the resistance R4.
Further, the resistance R1 is electrically connected with the low-tension supply Vcc, and the resistance R4 is electrically connected with the resistance R5
It connects, voltages of the detection voltage Uo1 between the resistance R5 and the tie point and earth point of the resistance R4.
Further, the resistance R1, the resistance R2, the resistance R3, the resistance R4 meet following relationship：
R1≠R2≠R3≠R4
R3≠R1+R2
R4≠R1+R2
R4≠R1+R3
R4≠R2+R3
R4≠R3+R2+R1
Further, the bridge JP1, the bridge JP2, the bridge JP3 and the bridge JP4 are with difference
When combination disconnects, failure is accurately positioned out according to the numerical information of the analog input voltage Uo in the electronic control unit ECU
The high-tension connector position.
Further, the electronic control unit ECU is electric automobile whole electronic control unit.
Further, the electronic control unit ECU is electrically connected with electric automobile whole electronic control unit realizes data sharing.
By using above-mentioned technical proposal, the advantageous effect that the present invention obtains is：
Voltage detecting circuit includes multiple voltage detection units of concatenation in the present invention, and each voltage detection unit includes simultaneously
Join the bridge and resistance of connection, the resistance value of the resistance of different voltages detection unit is different, and bridge and electric vehicle are high
It is disconnected prior to the high-tension connector when pushing back corresponding high-tension connector in road to integrate, and disconnecting.Voltage detecting electricity
The detection voltage Uo1 values on road are arranged through voltage modulate circuit, and the voltage value after arrangement is conveyed to electronic control unit ECU.Work as height
Multiple bridges of pressure interlocking loop are with various combination when being disconnected, detect voltage Uo1 and it is collated after voltage value numerical value all
It can occur to change accordingly, electronic control unit ECU judges that electric automobile high-voltage is mutual by the numerical value change of the voltage value after arrangement
The integrality of lock loop, and then be accurately positioned out which or which high-tension connector and failure occur, it is electric vehicle
The repair of high tension loop and troubleshooting provide reference.
Description of the drawings
Fig. 1 is the structure diagram of the electric automobile high-voltage interlocking loop of multibreak monitoring of the present invention；
Fig. 2 is the circuit diagram of the electric automobile high-voltage interlocking loop of multibreak monitoring of the present invention.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As depicted in figs. 1 and 2, high-voltage interlocking circuit is independently of a low pressure except high voltage loop of electric automobile and is electrically connected
Circuit is connect, which includes voltage detecting circuit, voltage modulate circuit and electronic control unit ECU；
Voltage detecting circuit one end is electrically connected with low-tension supply Vcc (12V), and the other end is electrically connected with voltage modulate circuit,
Voltage modulate circuit is electrically connected with electronic control unit ECU；Voltage detecting circuit includes multiple voltage detection units of concatenation, Mei Ge electricity
Pressure detection unit includes the bridge and resistance being connected in parallel, and the resistance value of the resistance of different voltages detection unit is different, bridge
High-tension connector corresponding with high voltage loop of electric automobile integrates while disconnected prior to the high-tension connector when disconnecting
It opens.Conducting wire can be interpreted as by bridge is popular, high-tension connector loosens appearance, and corresponding bridge disconnects；Work as height
When pressing connector fault-free, branch conducting where bridge；When high-tension connector breaks down, branch disconnects where bridge.
It can be appreciated that when bridge disconnects, corresponding high-tension connector is loosened or will be loosened, and judgement high-tension connector goes out
Existing failure, high tension loop have the risk of open circuit.It is electrically operated under carrying out high tension loop as long as risky presence, further carry
High maintenance dynamics
The voltage of the tie point and earth point of voltage detecting circuit and voltage modulate circuit is the detection of voltage detecting circuit
Voltage Uo1, detection voltage Uo1 are connected to the A/D translation interfaces of electronic control unit ECU after the adjustment of voltage modulate circuit.The voltage
Modulate circuit include resistance R5, with one end of the concatenated resistance R6 of resistance R5 and the capacitance C in parallel with resistance R6, resistance R5 with electricity
Detection circuit electrical connection is pressed, the voltage of one end ground connection of resistance R6, the tie point and earth point of resistance R5 and resistance R6 is adjustment
Voltage, the analog input voltage Uo that adjustment voltage is electronic control unit ECU.
Wherein, electronic control unit ECU is electric automobile whole electronic control unit, can also be an individual electronic control unit ECU,
But electronic control unit ECU need to be electrically connected with electric automobile whole electronic control unit realizes data sharing.
In the present embodiment, voltage detecting circuit include concatenation first voltage detection unit, second voltage detection unit,
Tertiary voltage detection unit and the 4th voltage detection unit；First voltage detection unit includes resistance R1, in parallel with resistance R1
Bridge JP1；Second voltage detection unit includes and the concatenated resistance R2 of resistance R1, the bridge JP2 in parallel with resistance R2；The
Three voltage detection units include and the concatenated resistance R3 of resistance R2, the bridge JP3 in parallel with resistance R3；4th voltage detecting list
Member includes and the concatenated resistance R4 of resistance R3, the bridge JP4 in parallel with resistance R4.Resistance R1 is electrically connected with low-tension supply Vcc,
Resistance R4 is electrically connected with resistance R5, detects the practical electricity between resistance R5 and the tie point and earth point of resistance R4 of voltage Uo1
Pressure.
In order to improve the accuracy of multibreak monitoring, resistance R1, resistance R2 in voltage detecting circuit, resistance R3, resistance
R4 needs to meet following relationship：
R1≠R2≠R3≠R4
R3≠R1+R2
R4≠R1+R2
R4≠R1+R3
R4≠R2+R3
R4≠R3+R2+R1
When bridge JP1, bridge JP2, bridge JP3 and bridge JP4 are disconnected with various combination, analog input voltage
Uo changes according to the following table 1, and electronic control unit ECU judges that electric automobile high-voltage is mutual by the analog input voltage Uo numerical value monitored
The integrality of lock loop, and which or which high-tension connector is accurately positioned out and occurs loosening failure.Wherein：Electric vehicle is high
The high-tension connector of pressure interlocking loop bridge and high voltage loop of electric automobile integrates, therefore can be mutual by high pressure
The integrality of lock loop judges the integrality of high voltage loop of electric automobile, is repair and the failure row of high voltage loop of electric automobile
Except offer reference.
Table 1：
The voltage detecting circuit that the present invention mentions is not solely restricted to the bridge and resistance being connected in parallel including four Duis,
In practical application, the logarithm of bridge and resistance can be set according to the actual quantity of high-tension connector, but is needed according to above-mentioned
The rule of listed resistor satisfied relationship selects the resistance of appropriate resistance value.
It is illustrated below with concrete numerical value：Wherein, Vcc=12V, resistance R1=1k Ω, resistance R2=2k Ω, resistance R3
=4k Ω, resistance R4=8k, resistance R5=4k Ω, resistance R6=1k Ω, C=1 μ F, meet following relationship：
R1≠R2≠R3≠R4
R3≠R1+R2
R4≠R1+R2
R4≠R1+R3
R4≠R2+R3
Analog input voltage Uo changes according to the following table 2.
Table 2：
Such as：When the analog input voltage Uo numerical value that electronic control unit ECU is monitored is 2.40V, it was demonstrated that bridge JP1,
JP2, JP3, JP4 are not disconnected, and electric automobile high-voltage interlocking loop is complete, i.e., high voltage loop of electric automobile is complete, remaining state
Above-mentioned table 2 is referred to, this will not be repeated here.
The foregoing is merely one embodiment of the present of invention, are not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (9)
1. a kind of electric automobile high-voltage interlocking loop of multibreak monitoring, which is characterized in that the high-voltage interlocking circuit includes electricity
Press detection circuit, voltage modulate circuit and electronic control unit ECU；
Described voltage detecting circuit one end is electrically connected with low-tension supply Vcc, and the other end is electrically connected with the voltage modulate circuit, institute
Voltage modulate circuit is stated to be electrically connected with the electronic control unit ECU；
The voltage detecting circuit includes multiple voltage detection units of concatenation, and each voltage detection unit includes in parallel connects
The resistance value of the bridge and resistance connect, the resistance of the different voltage detection units is different, the bridge and electronic vapour
Corresponding high-tension connector integrates in vehicle high tension loop, and is disconnected prior to the high-tension connector when disconnection.
2. the electric automobile high-voltage interlocking loop of multibreak monitoring according to claim 1, which is characterized in that the voltage
The voltage of the tie point and earth point of detection circuit and the voltage modulate circuit is the detection voltage of the voltage detecting circuit
The A/D conversions that Uo1, the detection voltage Uo1 are connected to the electronic control unit ECU after voltage modulate circuit adjustment connect
Mouthful.
3. the electric automobile high-voltage interlocking loop of multibreak monitoring according to claim 2, which is characterized in that the voltage
Modulate circuit include resistance R5, with the concatenated resistance R6 of the resistance R5 and the capacitance C in parallel with the resistance R6, the resistance
One end of R5 is electrically connected with the voltage detecting circuit, one end ground connection of the resistance R6, the resistance R5 and the resistance R6
Tie point and earth point voltage be adjustment voltage, it is described adjustment voltage be the electronic control unit ECU analog input voltage
Uo。
4. the electric automobile high-voltage interlocking loop of multibreak monitoring according to claim 3, which is characterized in that the voltage
Detection circuit includes the first voltage detection unit of concatenation, second voltage detection unit, tertiary voltage detection unit and the 4th electricity
Press detection unit；
The first voltage detection unit includes resistance R1, the bridge JP1 in parallel with the resistance R1；The second voltage inspection
Surveying unit includes and the concatenated resistance R2 of the resistance R1, the bridge JP2 in parallel with the resistance R2；The tertiary voltage inspection
Surveying unit includes and the concatenated resistance R3 of the resistance R2, the bridge JP3 in parallel with the resistance R3；The 4th voltage inspection
Surveying unit includes and the concatenated resistance R4 of the resistance R3, the bridge JP4 in parallel with the resistance R4.
5. the electric automobile high-voltage interlocking loop of multibreak monitoring according to claim 4, which is characterized in that the resistance
R1 is electrically connected with the low-tension supply Vcc, and the resistance R4 is electrically connected with the resistance R5, and the detection voltage Uo1 is described
Voltage between resistance R5 and the tie point and earth point of the resistance R4.
6. the electric automobile high-voltage interlocking loop of multibreak monitoring according to claim 4, which is characterized in that the resistance
R1, the resistance R2, the resistance R3, the resistance R4 meet following relationship：
R1≠R2≠R3≠R4
R3≠R1+R2
R4≠R1+R2
R4≠R1+R3
R4≠R2+R3
R4≠R3+R2+R1。
7. the electric automobile high-voltage interlocking loop of multibreak monitoring according to claim 6, which is characterized in that the bridge joint
When device JP1, the bridge JP2, the bridge JP3 and the bridge JP4 are disconnected with various combination, the electronic control unit
The high-tension connector position of failure is accurately positioned out according to the numerical information of the analog input voltage Uo in ECU.
8. the electric automobile high-voltage interlocking loop of multibreak monitoring according to claim 1, which is characterized in that described automatically controlled
Unit ECU is electric automobile whole electronic control unit.
9. the electric automobile high-voltage interlocking loop of multibreak monitoring according to claim 1, which is characterized in that described automatically controlled
Unit ECU is electrically connected with electric automobile whole electronic control unit realizes data sharing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810278119.3A CN108466553A (en) | 2018-03-31 | 2018-03-31 | A kind of electric automobile high-voltage interlocking loop of multibreak monitoring |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810278119.3A CN108466553A (en) | 2018-03-31 | 2018-03-31 | A kind of electric automobile high-voltage interlocking loop of multibreak monitoring |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109507564A (en) * | 2018-11-14 | 2019-03-22 | 苏州绿控传动科技股份有限公司 | A kind of new energy overall height pressure interlock detection circuit and corresponding detection method |
| CN110014839A (en) * | 2019-04-09 | 2019-07-16 | 山东交通职业学院 | A kind of electric automobile high-voltage interlock detection circuit |
| CN110058180A (en) * | 2019-04-04 | 2019-07-26 | 上海捷新动力电池系统有限公司 | A kind of power battery pack system high pressure interlocking connector detection system |
| CN110531249A (en) * | 2019-08-28 | 2019-12-03 | 宝能汽车有限公司 | A kind of high-voltage interlocking detection circuit and fault detection method |
| CN111231673A (en) * | 2020-03-09 | 2020-06-05 | 山东交通职业学院 | Double-loop high-voltage interlocking device |
| CN111231674A (en) * | 2020-03-09 | 2020-06-05 | 山东交通职业学院 | Split-node looseness early warning high-voltage interlocking device |
| CN111796213A (en) * | 2020-07-10 | 2020-10-20 | 的卢技术有限公司 | Detection circuit and method for electrical loop integrity and breakpoint positioning |
| CN111999592A (en) * | 2020-07-13 | 2020-11-27 | 东风汽车集团有限公司 | Circuit and device for detecting position of disconnection point of high-voltage interlocking circuit |
| CN112721645A (en) * | 2021-01-28 | 2021-04-30 | 上海汽车集团股份有限公司 | High-voltage interlocking detection circuit and detection method for electric automobile |
| CN113328297A (en) * | 2021-05-06 | 2021-08-31 | 上海卫星工程研究所 | Cable network and method for judging plug plugging state of cable network |
| CN113917368A (en) * | 2021-09-28 | 2022-01-11 | 潍柴动力股份有限公司 | High-voltage interlocking detection circuit, method and device |
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| CN203344750U (en) * | 2013-06-03 | 2013-12-18 | 潍柴动力股份有限公司 | High voltage interlocking system of electric vehicle |
| CN106143161A (en) * | 2016-08-24 | 2016-11-23 | 福建省汽车工业集团云度新能源汽车股份有限公司 | A kind of high pressure monitoring device of electric automobile |
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| CN203344750U (en) * | 2013-06-03 | 2013-12-18 | 潍柴动力股份有限公司 | High voltage interlocking system of electric vehicle |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109507564A (en) * | 2018-11-14 | 2019-03-22 | 苏州绿控传动科技股份有限公司 | A kind of new energy overall height pressure interlock detection circuit and corresponding detection method |
| CN110058180A (en) * | 2019-04-04 | 2019-07-26 | 上海捷新动力电池系统有限公司 | A kind of power battery pack system high pressure interlocking connector detection system |
| CN110014839B (en) * | 2019-04-09 | 2020-12-01 | 山东交通职业学院 | High-voltage interlocking detection circuit for electric automobile |
| CN110014839A (en) * | 2019-04-09 | 2019-07-16 | 山东交通职业学院 | A kind of electric automobile high-voltage interlock detection circuit |
| CN110531249A (en) * | 2019-08-28 | 2019-12-03 | 宝能汽车有限公司 | A kind of high-voltage interlocking detection circuit and fault detection method |
| CN111231673A (en) * | 2020-03-09 | 2020-06-05 | 山东交通职业学院 | Double-loop high-voltage interlocking device |
| CN111231674A (en) * | 2020-03-09 | 2020-06-05 | 山东交通职业学院 | Split-node looseness early warning high-voltage interlocking device |
| CN111796213A (en) * | 2020-07-10 | 2020-10-20 | 的卢技术有限公司 | Detection circuit and method for electrical loop integrity and breakpoint positioning |
| CN111999592A (en) * | 2020-07-13 | 2020-11-27 | 东风汽车集团有限公司 | Circuit and device for detecting position of disconnection point of high-voltage interlocking circuit |
| CN112721645A (en) * | 2021-01-28 | 2021-04-30 | 上海汽车集团股份有限公司 | High-voltage interlocking detection circuit and detection method for electric automobile |
| CN113328297A (en) * | 2021-05-06 | 2021-08-31 | 上海卫星工程研究所 | Cable network and method for judging plug plugging state of cable network |
| CN113328297B (en) * | 2021-05-06 | 2022-10-25 | 上海卫星工程研究所 | Cable network and method for judging plug plugging state of cable network |
| CN113917368A (en) * | 2021-09-28 | 2022-01-11 | 潍柴动力股份有限公司 | High-voltage interlocking detection circuit, method and device |
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Application publication date: 20180831 |
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