CN104569656B - A kind of electric automobile high-voltage interlock fault detection means and detection method - Google Patents
A kind of electric automobile high-voltage interlock fault detection means and detection method Download PDFInfo
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- CN104569656B CN104569656B CN201410757337.7A CN201410757337A CN104569656B CN 104569656 B CN104569656 B CN 104569656B CN 201410757337 A CN201410757337 A CN 201410757337A CN 104569656 B CN104569656 B CN 104569656B
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Abstract
A kind of electric automobile high-voltage interlock fault detection means and detection method, are related to the interlocking detection of high-tension connector.Including high-voltage interlocking plug-in unit, interlock fault detection means and instrument display, described high-voltage interlocking plug-in unit is sequentially connected failure detector and instrument display by data/address bus.Data/address bus is accessed into high-voltage interlocking measure loop, the process of malfunction elimination is simplified.There are many parts for carrying high-voltage interlocking in vehicle, when a certain position high-voltage interlocking breaks down, being capable of Accurate Diagnosis failure generation position, instrument shows particular location automatically, high-tension connector need not be pulled up one by one to be investigated, reduce many workloads, save the time.Even if with the presence of multiple interlock faults, can also be accurately judged to occur position.
Description
Technical field
The present invention relates to the interlocking of high-tension connector detection, more particularly to a kind of electric automobile high-voltage interlock fault detection dress
Put and detection method.
Background technology
To respond the call of sustainable development, new-energy automobile industry is developed rapidly.Pure electric automobile and hybrid power vapour
Car represents the developing direction of new-energy automobile.For orthodox car, an important feature of electric automobile is exactly whole
Car is equipped with high-pressure system, including high voltage components such as charging system, distribution system, energy-storage system, dynamical systems.High pressure system
The voltage of system is high to prevent maloperation from causing Danger Electric shock risk, ensuring maintenance safety considerably beyond the safe voltage of human body
It is essential to press interlocking loop.
Many high voltage parts are equipped with electric car, high-voltage interlocking stitch is designed with its high-tension connector, as long as
One of interlocking stitch, which disconnects vehicle high tension loop, to be disconnected therewith.Current detection mode is very cumbersome, once occur
Interlock fault, each high-tension connector of vehicle, which will disconnect, to be investigated, and wastes substantial amounts of time and energy.Increase high pressure mutual
Lock fault detection system can simplify malfunction elimination process, be accurately positioned interlock fault generation position.
The content of the invention
The present invention proposes a kind of electric automobile high-voltage interlock fault detection means and detection method, solves when multiple high pressures
During connector failure, it is impossible to it is determined which specific high-tension connector thus the problem of hinder, this method can simplify malfunction elimination
Process, and interlock fault generation position is accurately positioned, it is convenient that it is realized, while workload is reduced, saves the time.
The technical proposal of the invention is realized in this way：A kind of electric automobile high-voltage interlock fault detection means, including height
Pressure interlocking plug-in unit, interlock fault detection means and instrument display, described high-voltage interlocking plug-in unit are connected successively by data/address bus
Connect failure detector and instrument display.
As a kind of preferred scheme of apparatus of the present invention, failure detector is made up of buffer and controller, and high pressure is mutual
Buffer, the controller of lock plug-in unit successively with interlock fault detection means are connected.
As the further preferred scheme of apparatus of the present invention, buffer is to be used to store high-voltage interlocking plug-in unit female end level letter
Number device.
As the further preferred scheme of apparatus of the present invention, occur during controller for detecting high-voltage interlocking loop fault
The device of particular location.
As another preferred scheme of apparatus of the present invention, described high-voltage interlocking plug-in unit is one another in series, and composition high pressure is mutual
Lock loop.
A kind of electric automobile high-voltage interlock fault detection method, comprises the following steps：
Step 1：Detect the level on the signal wire being connected in high-voltage interlocking loop with power supply and the signal wire being connected to ground
On level, if being high level, whole high-voltage interlocking loop is normal, repeats step 1；Otherwise, if being connected with power supply
Signal wire for the signal wire that high level is connected to ground be low level, then high-voltage interlocking loop fault, performs step 2；
Step 2：Controller sends instruction cut-out electrokinetic cell bag discharge loop；
Step 3：Controller is detected to the signal wire of high-voltage interlocking plug-in unit successively, if it is low to detect certain signal line
Level, then controller send a signal to instrument display, show the high-tension connector failure where the signal wire；
Step 4：The output level for the signal wire that step 3 is detected is forced to be set to high level, continues to detect next letter
Number line, judges whether to detect the last item signal wire, if so, then detection of end process；Otherwise, step 3~step is repeated
Rapid 4.
A kind of preferred scheme of the inventive method, described controller receives the height that buffer is stored by data/address bus
The level signal on each signal wire in interlocking loop is pressed, controller selects to receive level signal as needed.
The present invention has the advantage that and good effect is：Apparatus of the present invention include high-voltage interlocking plug-in unit, interlock fault and detected
Device and instrument display, and high-voltage interlocking plug-in unit is sequentially connected failure detector and instrument display by data/address bus.
Data/address bus is accessed into high-voltage interlocking measure loop, the process of malfunction elimination is simplified.Vehicle, which exists, much carries high-voltage interlocking
Parts, when it breaks down, instrument board can show particular location automatically, it is not necessary to pull up one by one high-tension connector progress
Investigation, reduces many workloads, saves the time, and being capable of Accurate Diagnosis failure generation position.Even if there is multiple interlocking events
Barrier is present, and can also be accurately judged to occur position.
Brief description of the drawings
The invention will now be described in further detail with reference to the accompanying drawings.
Fig. 1 is apparatus of the present invention structural representation；
Fig. 2 is the inventive method flow chart；
Number explanation in figure：1 high-voltage interlocking plug-in unit, 2 interlock fault detection means, 3 instrument displays, 4 buffers, 5 controls
Device processed, 6 data/address bus.
Embodiment
Describe the concrete structure and control process of the present invention in detail according to Fig. 1~Fig. 2.
Embodiment 1：
Electric automobile high-voltage interlock fault detection means in the present embodiment, as shown in Figure 1.Including high-voltage interlocking plug-in unit 1,
Interlock fault detection means 2 and instrument display 3.High-voltage interlocking plug-in unit 1 is sequentially connected failure detector by data/address bus 6
2 and instrument display 3.
Failure detector 2 is made up of buffer 4 and controller 5, and high-voltage interlocking plug-in unit 1 detects with interlock fault fill successively
2 buffer 3, controller 4 is put to connect.In the present embodiment, the buffer 4 used in the present embodiment by model 74LS244
Tri-state No. eight buffer and model 74ALS245 tri-state No. eight buffer be composed in series.Such as, when high-voltage interlocking loop is by 7
During individual high-voltage interlocking plug-in unit composition, i.e. during n in Fig. 1=7, the termination power VCC ends of the 0th signal wire one, No. 0 signal wire it is another
One end connects 74LS244 0A0 ends, and the 1st signal wire connects 74LS244 1A1 ends ... ..., and the 7th signal wire is connected to
74LS244 7A7 ends.74LS244 is connected again with 74ALS245 by data/address bus, connects P0.0~P0.7 ends of controller.
The controller model 8052 of use in the present embodiment.
Buffer 4 is the device for storing high-voltage interlocking plug-in unit female end level signal.
Controller 5 be for detect high-voltage interlocking loop whether failure, determine failure occur position device.
High-voltage interlocking plug-in unit 1 is one another in series, and constitutes high-voltage interlocking measure loop.
Embodiment 2：
A kind of electric automobile high-voltage interlock fault detection method that the present embodiment is used, as shown in Fig. 2 including following step
Suddenly：
In step 201, when vehicle is in sparking（Key on）During state, the two ends level of high-voltage interlocking plug-in unit is detected.Control
Device processed is the level signal that the high-voltage interlocking plug-in unit two ends from buffer are received by bus, and controller is selected as needed
Receive the level signal at any high-voltage interlocking plug-in unit two ends.
In step 202, when such as detecting the 0th signal wire and the n-th signal wire, if both at high level, illustrating that high pressure is mutual
Lock loop is normal, performs step 203.In step 203, show that mistake does not occur in the loop, such as HVIL no errors are that is, high
Press interlocking loop fault-free；
If it is low level that the 0th signal wire, which is high level, the n-th signal wire, there is failure in high-voltage interlocking loop, aobvious in instrument
Show and HVIL errors are shown in device, be i.e. high-voltage interlocking loop fault, perform step 204.
In step 204, controller sends instruction cut-out electrokinetic cell bag discharge loop, it is therefore an objective to eliminate high-voltage safety hidden
Suffer from, it is ensured that vehicle and personal security.
In step 205, controller is detected to the signal wire of high-voltage interlocking plug-in unit successively, such as by the 1st signal wire
Detection, if the 1st signal wire is high level, continues to detect the 2nd signal wire, by that analogy, if it is low to detect certain signal line
Level, such as the 4th signal wire are low level, then controller sends a signal to instrument display, then performs step 206.
In step 206, instrument display shows the high-tension connector failure where the signal wire, such as HVIL 4, the 4th high electricity
Connector is pressed to occur open fault.
In step 207, judge whether to detect the last item signal wire, if so, then detection of end process, performs step
208；Otherwise, the output level of signal wire step 205 detected is forced to be set to high level by low level, continues to detect next
Signal line, repeats step 205~step 207.
In step 208 detection of end process.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (2)
1. a kind of electric automobile high-voltage interlock fault detection method, is realized using electric automobile high-voltage interlock fault detection means,
Electric automobile high-voltage interlock fault detection means includes high-voltage interlocking plug-in unit, interlock fault detection means and instrument display, institute
The high-voltage interlocking plug-in unit stated is sequentially connected failure detector and instrument display by data/address bus；
Described failure detector is made up of buffer and controller, and described high-voltage interlocking plug-in unit is examined with interlock fault successively
Survey buffer, the controller connection of device；Described buffer is the dress for storing high-voltage interlocking plug-in unit female end level signal
Put；Described controller is for detecting that the device of particular location occurs for high-voltage interlocking loop fault；Described high-voltage interlocking is inserted
Part is one another in series, composition high-voltage interlocking loop；
It is characterized in that：Comprise the following steps：
Step 1：Detect on the level on the signal wire being connected in high-voltage interlocking loop with power supply and the signal wire being connected to ground
Level, if being high level, whole high-voltage interlocking loop is normal, repeats step 1；Otherwise, if the letter being connected with power supply
Number line is low level for the signal wire that high level is connected to ground, then high-voltage interlocking loop fault, performs step 2；
Step 2：Controller sends instruction cut-out electrokinetic cell bag discharge loop；
Step 3：Controller is detected to the signal wire of high-voltage interlocking plug-in unit successively, if detecting certain signal line for low electricity
Flat, then controller sends a signal to instrument display, shows the high-tension connector failure where the signal wire；
Step 4：The output level for the signal wire that step 3 is detected is forced to be set to high level, continues to detect next signal line,
Judge whether to detect the last item signal wire, if so, then detection of end process；Otherwise, step 3~step 4 is repeated.
2. electric automobile high-voltage interlock fault detection method as claimed in claim 1, it is characterised in that：Described controller leads to
The level signal on each signal wire in the high-voltage interlocking loop of data/address bus reception buffer storage is crossed, controller is as needed
Selection receives level signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410757337.7A CN104569656B (en) | 2014-12-12 | 2014-12-12 | A kind of electric automobile high-voltage interlock fault detection means and detection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410757337.7A CN104569656B (en) | 2014-12-12 | 2014-12-12 | A kind of electric automobile high-voltage interlock fault detection means and detection method |
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| CN104569656A CN104569656A (en) | 2015-04-29 |
| CN104569656B true CN104569656B (en) | 2017-11-03 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105223489A (en) * | 2015-09-01 | 2016-01-06 | 沈阳拓荆科技有限公司 | A kind of interlock circuit testing apparatus and method of testing |
| CN105203910B (en) * | 2015-10-20 | 2018-09-11 | 北京新能源汽车股份有限公司 | Electric automobile, high-low voltage interlocking detection circuit thereof and interlocking signal detection method |
| CN106199322B (en) * | 2016-07-22 | 2018-09-18 | 深圳威迈斯电源有限公司 | A kind of detecting system and detection method of on-board high-voltage parts interlocking signal |
| CN106564382B (en) * | 2016-09-28 | 2019-06-14 | 奇瑞汽车股份有限公司 | The high-pressure-loop interlock system and its control method of new-energy automobile |
| CN106646076B (en) * | 2016-10-14 | 2019-06-04 | 宁德时代新能源科技股份有限公司 | High-voltage interlocking detection circuit |
| CN108732449A (en) * | 2017-04-25 | 2018-11-02 | 上海汽车集团股份有限公司 | High-voltage interlocking circuit and its fault detection method |
| CN109532495B (en) * | 2018-11-02 | 2020-08-28 | 浙江吉利新能源商用车有限公司 | High-voltage interlocking detection device and electric automobile |
| CN110058180B (en) * | 2019-04-04 | 2022-10-28 | 上海捷新动力电池***有限公司 | Power battery package system high pressure interlock connector detecting system |
| CN112213624B (en) * | 2020-09-29 | 2022-06-21 | 奇瑞新能源汽车股份有限公司 | Test device and method for verifying interlocking function of high-voltage loop of electric automobile |
| CN112462163A (en) * | 2020-10-30 | 2021-03-09 | 广州汽车集团股份有限公司 | High-voltage interlocking loop fault detection method and device |
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| US9327601B2 (en) * | 2012-09-05 | 2016-05-03 | GM Global Technology Operations LLC | High-voltage interlock loop (“HVIL”) switch having a reed relay |
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Granted publication date: 20171103 Termination date: 20211212 |