CN108254626A - A kind of Vehicular charger wide scope duty ratio CP signal detecting methods based on low-power chip - Google Patents
A kind of Vehicular charger wide scope duty ratio CP signal detecting methods based on low-power chip Download PDFInfo
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- CN108254626A CN108254626A CN201810042895.3A CN201810042895A CN108254626A CN 108254626 A CN108254626 A CN 108254626A CN 201810042895 A CN201810042895 A CN 201810042895A CN 108254626 A CN108254626 A CN 108254626A
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000001514 detection method Methods 0.000 claims abstract description 27
- 238000012545 processing Methods 0.000 claims abstract description 21
- 230000007246 mechanism Effects 0.000 claims abstract description 11
- 238000001914 filtration Methods 0.000 claims description 4
- 230000009191 jumping Effects 0.000 claims description 3
- 230000007958 sleep Effects 0.000 abstract description 3
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- 238000007796 conventional method Methods 0.000 description 2
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- 230000005059 dormancy Effects 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 230000006266 hibernation Effects 0.000 description 1
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Classifications
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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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/14—Conductive energy transfer
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/02—Measuring characteristics of individual pulses, e.g. deviation from pulse flatness, rise time or duration
-
- 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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/30—Constructional details of charging stations
- B60L53/305—Communication interfaces
-
- 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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/62—Monitoring or controlling charging stations in response to charging parameters, e.g. current, voltage or electrical charge
-
- 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
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/66—Data transfer between charging stations and vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R23/00—Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
- G01R23/02—Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/92—Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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- Power Engineering (AREA)
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention belongs to electric vehicle charging technique fields, disclose a kind of Vehicular charger wide scope duty ratio CP signal detecting methods based on low-power chip, described method includes following steps：Step 1:Configuration Vehicular charger chip is in low power mode of operation；Step 2:The capturing function that the chip obtains CP signals by inquiry mechanism is configured；Step 3:CP signal status informations are obtained using the inquiry mechanism；Step 4:Judge whether Vehicular charger carries out wake-up processing according to the acquisition CP signal status informations.The present invention can be in the case of the low power consumption current index request when meeting Vehicular charger in entire dormant state, and can normally be accurately detected the CP signals of wide scope duty ratio（3%~97%）, and the charger work and sleep condition adjudgement processing of next step is carried out, meet national standard to the CP signal detections requirement in Vehicular charger whole work process.
Description
Technical field
The invention belongs to electric vehicle charging technique fields, and in particular to a kind of Vehicular charger based on low-power chip
Wide scope duty ratio CP signal detecting methods.
Background technology
Automobile goes out involved partys and provides huge convenience, but conventional fuel oil car generates a large amount of give up in use
Gas exacerbates dependence of the mankind to non-renewable petroleum resources, with the reinforcement of Public environmental attitude, advocates Green Travel, change
Become travel components and increasingly become mainstream instantly.Green Travel has expedited the emergence of the development of new energy vehicle, and outstanding in new energy vehicle
It is represented the most with electric vehicle, among these again including hybrid electric, plug-in hybrid electric vehicle and pure electric vehicle.Hybrid electrically
Vehicle does not need to additional charging equipment, purely carries out energy circulation by interior portion, and the new energy energy comparison that it can be provided is small.Plug-in
Formula hybrid electric vehicle and pure electric vehicle are required for external charge equipment, and when Vehicular charger does not charge is generally in suspend mode shape
State, when needing to charge to new energy vehicle using external charge equipment, charging equipment needs to wake up Vehicular charger, wakes up
Vehicular charger usually has 3 kinds：Battery management unit（BMS）It wakes up, the CC signals of charging gun wake up, the CP signals of charging gun are called out
It wakes up, this patent is directed to the CP signal wake-up modes of charging gun, provides a kind of wide scope CP signal dutyfactors inspection of low-power chip
Survey strategy.
CP signals usually have 4 kinds of states：DC 12V, DC 9V, PWM 9V, PWM 6V, the state that this patent is related to are PWM
The CP signals in stage, the frequency in CP signal PWM stages is 1KHz, the detection for CP signal dutyfactors, the requirement of national standard is 3% ~
97% range interior energy accurately detected, and not requirement can accurately measure duty ratio numerical value except this range, but can recognize that
Come and charging can be stopped.
Conventional CP signal capture detection methods are when the edge signal for having PWM（Rising edge or failing edge）During arrival, side
It is interrupted along the capture of signal meeting flip chip, the time of rising edge or failing edge is handled in interruption to obtain corresponding frequency
Rate and duty ratio.This method is when chip dominant frequency is higher, it is easy to detected the duty ratio and satisfaction of this wide scope
National standard.But due to being onboard to apply, when Vehicular charger is uncharged in a dormant state, to consume on vehicle at this time
Baby battery electricity, electric vehicle requires the charger power consumption under dormant state, usually requires that no more than 1mA, this
When just can not use the chip of high primary frequency, need to select has the chip of low-power consumption function, and this kind of chip is low in order to reduce power consumption
The ratio that dominant frequency can adjust under power consumption mode is relatively low, at this time if removing design software by a conventional method, it can not accurately detect 3% ~
97% signal so in wide scope is typically only capable to detect 10% ~ 90%；Another conventional treatment mode is low-power chip
The duty ratio of CP is not detected, the main control chip of rear class is waken up as long as having the edge signal for detecting CP, by the master control of rear class
Chip further detects the duty ratio of CP signals, meets the requirements and maintains wake-up states, otherwise just switching back to suspend mode shape
State can meet the electric current index request of low-power consumption under this mode normal hibernation state, but due to detecting CP edge signals
Even interference edge signal when charger can all be waken up CP signals are further detected, may result in false wake-up working stage and fill
The power consumption of motor is higher, can not ensure to meet low-power consumption requirement in the entire dormant stage.
Vehicular charger present in for the above-mentioned prior art can not be accurately detected CP while low-power consumption is met
The problem of signal frequency and duty ratio, the present invention propose a kind of Vehicular charger wide scope duty ratio based on low-power chip
CP signal detecting methods.
Invention content
It is a kind of based on low-power chip it is a primary object of the present invention to provide for problems of the prior art
Vehicular charger wide scope duty ratio CP signal detecting methods；This method can be detected accurately in the case where meeting low-power consumption
The duty ratio of CP signals so that charger can maintain low power consumpting state always in the dormant stage, until detecting what is met the requirements
CP signals wake up charger, solve the wake-up of the wide duty ratio CP signal detections in the case of Vehicular charger Low-power-consumptiodormancy dormancy and ask
Topic ensures that charger meets the electric current index request of low-power consumption in the entire dormant stage, so as to reach above-mentioned purpose.
The invention discloses a kind of Vehicular charger wide scope duty ratio CP signal detecting methods based on low-power chip,
Described method includes following steps：
Step 1:Configuration Vehicular charger chip is in low power mode of operation；
Step 2:The capturing function that the chip obtains CP signals by inquiry mechanism is configured；
Step 3:CP signal status informations are obtained using the inquiry mechanism；
Step 4:Judge whether Vehicular charger carries out wake-up processing according to the acquisition CP signal status informations.
Preferably, the step 3 specifically includes following steps：
Step 31：The trapped state register of the chip is ceaselessly inquired by the endless loop of t periods, so as to quick obtaining
The CP signal capture states of the chip.
Preferably, the step 31 specifically comprises the steps of：
Step 311：Whether the signal for judging current state processing detection is after CP believes；If then jump to step 312；If no
It is then to continue to execute step 311；
Step 312：Judge whether to detect CP edge signals, if then jumping to step 313；If no, return to step
311；
Step 313：The CP related registers of the chip are read, and calculate CP signal dutyfactors and period.
Preferably, it is also followed the steps below after the step 313：
Step 314：Low-pass filtering treatment is carried out to the CP signal dutyfactors and period.
Preferably, the t periods are 100ms in the step 31.
Preferably, the step 4 specifically comprises the steps of：
Step 41：Judge whether CP signals meet Vehicular charger and wake up requirement according to the acquisition CP signal status informations；If
It is then to jump to step 42, otherwise jumps to step 43；
Step 42：Vehicular charger is waken up into working condition is charged normal, then jumps to step 44；
Step 43：Control Vehicular charger continues to dormant state；
Step 44：The chip enters dormant state.
Preferably, Vehicular charger wake-up requirement is specially in the step 41：The CP signals of detection are pwm signal,
Duty ratio is 3% ~ 97%, frequency 1KHz.
Preferably, the period that the step 4 performs is 100ms.
Preferably, the step 3 carries out deblocking processing, and alternately respectively with step 4.
Preferably, the chip is the MSP430 series low-power chips of TI.
The technical solution of the embodiment of the present invention provides a kind of Vehicular charger wide scope duty based on low-power chip
Than CP signal detecting method；The technical solution of the embodiment of the present invention has following remarkable result：
This patent mainly protects a kind of software detection processing method, and this method can meet Vehicular charger in entire suspend mode shape
In the case of low power consumption current index request during state, and it can normally be accurately detected the CP signals of wide scope duty ratio（3%~
97%）, and the charger work and sleep condition adjudgement processing of next step is carried out, it is entirely worked to Vehicular charger to meet national standard
CP signal detections requirement in journey.Advantage is to meet the situation of the power consumption requirements under entire dormant state using low-power chip
Under, the CP signals of wide scope duty ratio still can be normally accurately detected, and accurately complete suspend mode or wake up the action of charger.
Description of the drawings
Fig. 1 is the Vehicular charger wide scope duty ratio CP signal detection sides based on low-power chip of the embodiment of the present invention
Method flow chart；
Fig. 2 is that the Vehicular charger wide scope duty ratio CP signal detecting methods based on low-power chip of the embodiment of the present invention are detailed
Thin flow chart.
Specific embodiment
In order to make the invention's purpose, features and advantages of the invention more obvious and easy to understand, below in conjunction with the present invention
The technical solution in the embodiment of the present invention is clearly and completely described in attached drawing in embodiment, it is clear that described reality
It is only part of the embodiment of the present invention to apply example, and not all embodiments.Based on the embodiments of the present invention, people in the art
Member's all other embodiments obtained without making creative work, shall fall within the protection scope of the present invention.
Existing traditional scheme processing CP signal captures mechanism is all to handle related data using interrupting, and this mode is real
Shi Xinggao, acquisition accuracy is high, this scheme chip high especially suitable for dominant frequency, but in vehicle-mounted charge rifle wakes up application,
Power consumption is larger when can lead to dormant state using the high chip of dominant frequency, and uses the chip dominant frequency of low-power consumption low, and meeting power consumption will
It asks, but the calculating time after CP detections use traditional scheme interrupt response time longer and interrupt is also longer, the two can be significantly
Influence the computational accuracy of duty ratio.
This patent discloses a kind of scheme, by the software processing side for optimizing detection capture CP duty ratios in low-power chip
Method, achieve the purpose that meet under conditions of low-power consumption also can wide scope detection CP signal dutyfactors, meet national standard to vehicle-mounted charge
The testing requirements of machine CP signals.
As illustrated in fig. 1 and 2, the invention discloses a kind of Vehicular charger wide scope duty ratio CP based on low-power chip
Signal detecting method, described method includes following steps：
Step 1:Configuration Vehicular charger chip is in low power mode of operation；
Step 2:The capturing function that the chip obtains CP signals by inquiry mechanism is configured；
Step 3:CP signal status informations are obtained using the inquiry mechanism；
Step 4:Judge whether Vehicular charger carries out wake-up processing according to the acquisition CP signal status informations.
Preferably, the step 3 specifically includes following steps：
Step 31：The trapped state register of the chip is ceaselessly inquired by the endless loop of t periods, so as to quick obtaining
The CP signal capture states of the chip.
Preferably, the step 31 specifically comprises the steps of：
Step 311：Whether the signal for judging current state processing detection is after CP believes；If then jump to step 312；If no
It is then to continue to execute step 311；
Step 312：Judge whether to detect CP edge signals, if then jumping to step 313；If no, return to step
311；
Step 313：The CP related registers of the chip are read, and calculate CP signal dutyfactors and period.
Preferably, it is also followed the steps below after the step 313：
Step 314：Low-pass filtering treatment is carried out to the CP signal dutyfactors and period.
Preferably, the t periods are 100ms in the step 31.
Preferably, the step 4 specifically comprises the steps of：
Step 41：Judge whether CP signals meet Vehicular charger and wake up requirement according to the acquisition CP signal status informations；If
It is then to jump to step 42, otherwise jumps to step 43；
Step 42：Vehicular charger is waken up into working condition is charged normal, then jumps to step 44；
Step 43：Control Vehicular charger continues to dormant state；
Step 44：The chip enters dormant state.
Preferably, Vehicular charger wake-up requirement is specially in the step 41：The CP signals of detection are pwm signal,
Duty ratio is 3% ~ 97%, frequency 1KHz.
Preferably, the period that the step 4 performs is 100ms.
Preferably, the step 3 carries out deblocking processing, and alternately respectively with step 4.
Preferably, the chip is the MSP430 series low-power chips of TI.
In another preferred embodiment, use step when this patent is applied is as follows：
Step 1：Selected CP signal detections chip need to carry pwm signal capturing function；
Step 2：Configuration chip is in Low-power-consumptiodormancy dormancy pattern, and can be waken up by pin level and enter low-power consumption working condition；
Step 3：For the unavailable conventional method of PWM capturing functions of step 1 using interrupting, interrupt response time can influence duty ratio
Accuracy of detection, configuration chip obtains capture moment of CP signals by inquiry mechanism, and specific inquiry mode is：By certain
The trapped state register of chip is ceaselessly inquired in the endless loop of period, so as to the CP signal captures of quick obtaining current chip
State is equivalent to and is not stopped inquiry mode with endless loop to make up the longer deficiency of low frequency chip interrupt response time.
Step 4：Step 3 needs to ensure that polling interval is short enough using inquiry mechanism, in order to reach this purpose, main program
In to function carry out piecemeal processing；
Step 5：Deblocking 1 in step 4 is 100ms detection parsing CP signals, and whether deblocking 2 judges CP for 100ms
It is normal and carry out wake-up processing, 2 deblockings processing alternately, before 100ms the CP of chip is obtained in endless loop always
Trapped state, 100ms below without capture, but the 100ms states obtained in front are handled to obtain CP frequencies and
Duty ratio simultaneously carries out breakdown judge processing, and the interruption of low frequency chip is made up by way of this alternate treatment if be equivalent to
It can cause the deficiency that the interrupt processing time is longer, it is noted that be at this moment the interrupt processing time, in step 3 is interrupt response
Time.；
Step 6：Deblocking 1 in step 5 needs to carry out low-pass filtering treatment after parsing CP signals；
Step 7：Deblocking 2 in step 5 judges whether CP ranges meet national standard, and carries out corresponding wake up at suspend mode
Reason；
The technical solution of the embodiment of the present invention provides a kind of Vehicular charger wide scope duty ratio CP based on low-power chip
Signal detecting method；The technical solution of the embodiment of the present invention has following remarkable result：
This patent mainly protects a kind of software detection processing method, and this method can meet Vehicular charger in entire suspend mode shape
In the case of low power consumption current index request during state, and it can normally be accurately detected the CP signals of wide scope duty ratio（3%~
97%）, and the charger work and sleep condition adjudgement processing of next step is carried out, it is entirely worked to Vehicular charger to meet national standard
CP signal detections requirement in journey.Advantage is to meet the situation of the power consumption requirements under entire dormant state using low-power chip
Under, the CP signals of wide scope duty ratio still can be normally accurately detected, and accurately complete suspend mode or wake up the action of charger.
This patent relates generally to a kind of Vehicular charger of new energy electric motor vehicle and is carried out by low-power consumption MCU or dsp chip
The processing strategy that the CP signals of wide scope duty ratio accurately detect, including but not limited to applied to pure electric vehicle or plug-in mixing
In the Vehicular charger of electric vehicle, low-power consumption MCU or dsp chip include but not limited to the MSP430 series low-power chips of TI.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention, it is all
All any modification, equivalent and improvement made within the spirit and principles in the present invention etc. should be included in the protection of the present invention
Within the scope of.
Claims (10)
1. a kind of Vehicular charger wide scope duty ratio CP signal detecting methods based on low-power chip, it is characterised in that：Institute
The method of stating includes the following steps：
Step 1:Configuration Vehicular charger chip is in low power mode of operation；
Step 2:The capturing function that the chip obtains CP signals by inquiry mechanism is configured；
Step 3:CP signal status informations are obtained using the inquiry mechanism；
Step 4:Judge whether Vehicular charger carries out wake-up processing according to the acquisition CP signal status informations.
2. the Vehicular charger wide scope duty ratio CP signal detection sides according to claim 1 based on low-power chip
Method, it is characterised in that：The step 3 specifically includes following steps：
Step 31：The trapped state register of the chip is ceaselessly inquired by the endless loop of t periods, so as to quick obtaining
The CP signal capture states of the chip.
3. the Vehicular charger wide scope duty ratio CP signal detection sides according to claim 2 based on low-power chip
Method, it is characterised in that：The step 31 specifically comprises the steps of：
Step 311：Whether the signal for judging current state processing detection is after CP believes；If then jump to step 312；If no
It is then to continue to execute step 311；
Step 312：Judge whether to detect CP edge signals, if then jumping to step 313；If no, return to step
311；
Step 313：The CP related registers of the chip are read, and calculate CP signal dutyfactors and period.
4. the Vehicular charger wide scope duty ratio CP signal detection sides according to claim 3 based on low-power chip
Method, it is characterised in that：It is also followed the steps below after the step 313：
Step 314：Low-pass filtering treatment is carried out to the CP signal dutyfactors and period.
5. the Vehicular charger wide scope duty ratio CP signal detection sides according to claim 2 based on low-power chip
Method, it is characterised in that：The t periods are 100ms in the step 31.
6. the Vehicular charger wide scope duty ratio CP signal detection sides according to claim 1 based on low-power chip
Method, it is characterised in that：The step 4 specifically comprises the steps of：
Step 41：Judge whether CP signals meet Vehicular charger and wake up requirement according to the acquisition CP signal status informations；If
It is then to jump to step 42, otherwise jumps to step 43；
Step 42：Vehicular charger is waken up into working condition is charged normal, then jumps to step 44；
Step 43：Control Vehicular charger continues to dormant state；
Step 44：The chip enters dormant state.
7. the Vehicular charger wide scope duty ratio CP signal detection sides according to claim 6 based on low-power chip
Method, it is characterised in that：In the step 41 Vehicular charger wake up requirement be specially：The CP signals of detection are pwm signal, are accounted for
Sky is than being 3% ~ 97%, frequency 1KHz.
8. the Vehicular charger wide scope duty ratio CP signal detection sides according to claim 1 based on low-power chip
Method, it is characterised in that：The period that the step 4 performs is 100ms.
9. the Vehicular charger wide scope duty ratio CP based on low-power chip according to any one in claim 1-8
Signal detecting method, it is characterised in that：The step 3 carries out deblocking processing, and alternately respectively with step 4.
10. the Vehicular charger wide scope duty ratio based on low-power chip according to any one in claim 1-8
CP signal detecting methods, it is characterised in that：The chip is the MSP430 series low-power chips of TI.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810042895.3A CN108254626A (en) | 2018-01-17 | 2018-01-17 | A kind of Vehicular charger wide scope duty ratio CP signal detecting methods based on low-power chip |
| PCT/CN2018/083859 WO2019140800A1 (en) | 2018-01-17 | 2018-04-20 | Vehicle-mounted charger wide-range duty cycle cp signal detection method based on low-power-consumption chip |
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| CN201810042895.3A CN108254626A (en) | 2018-01-17 | 2018-01-17 | A kind of Vehicular charger wide scope duty ratio CP signal detecting methods based on low-power chip |
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| CN110733366A (en) * | 2019-09-23 | 2020-01-31 | 深圳威迈斯新能源股份有限公司 | Awakening method and device for vehicle-mounted charger |
| CN113119733A (en) * | 2019-12-26 | 2021-07-16 | 北汽福田汽车股份有限公司 | Control method and device of vehicle-mounted charger, medium, vehicle-mounted charger and vehicle |
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| TWI740676B (en) | 2020-10-12 | 2021-09-21 | 財團法人工業技術研究院 | Pulse-width modulation signal observation circuit and hardware-in-the-loop simulation device having the same |
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| CN118519011B (en) * | 2024-07-12 | 2024-10-01 | 星沿科技(杭州)有限责任公司 | CP (control program) testing method and system of RFID (radio frequency identification) chip |
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| CN115242579B (en) * | 2022-08-04 | 2024-03-29 | 浙江瑞瀛物联科技有限公司 | PWM signal acquisition system and method based on lamplight color temperature adjustment |
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| WO2019140800A1 (en) | 2019-07-25 |
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Address after: 518000, 5 floor, Fengyun mansion, five road north, Nanshan District science and Technology Park, Shenzhen, Guangdong Applicant after: Shenzhen Vmax Power Co., Ltd. Address before: 518000, 4 floor, Fengyun mansion, five road north, Nanshan District science and Technology Park, Shenzhen, Guangdong Applicant before: Shenzhen Vmax Power Co., Ltd. |
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