CN107947553B - Electric door lock starting circuit and method for electric vehicle burglar alarm - Google Patents
Electric door lock starting circuit and method for electric vehicle burglar alarm Download PDFInfo
- Publication number
- CN107947553B CN107947553B CN201711418520.4A CN201711418520A CN107947553B CN 107947553 B CN107947553 B CN 107947553B CN 201711418520 A CN201711418520 A CN 201711418520A CN 107947553 B CN107947553 B CN 107947553B
- Authority
- CN
- China
- Prior art keywords
- circuit
- door lock
- soft start
- electric door
- triode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000034 method Methods 0.000 title claims description 7
- 238000001514 detection method Methods 0.000 claims abstract description 18
- 239000003990 capacitor Substances 0.000 claims description 8
- 230000001939 inductive effect Effects 0.000 claims description 5
- 230000015556 catabolic process Effects 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/36—Means for starting or stopping converters
Abstract
The invention discloses an electric door lock starting circuit of an electric vehicle burglar alarm, which comprises a control driving circuit and a lock driving circuit, wherein an MCU outputs an electric door lock control signal to the lock driving circuit, the output end of the lock driving circuit is connected with the input end of the control driving circuit, and the output end of the control driving circuit is connected with an electric door lock; the system also comprises a soft start protection circuit and a soft start detection circuit, wherein the MCU sends a PWM signal to the soft start protection circuit, and the output end of the soft start protection circuit is connected with the electric door lock; the soft start detection circuit is used for detecting soft start whether the circuit is valid or not and feeds back a signal to the input end of the MCU. The invention has the advantages that: through soft start protection circuit and soft start detection circuit, charge in advance capacitive, the resistive circuit in the electric door lock, prevent that the electric door lock from appearing the overheated fire of circuit because charging voltage, too big appearance of electric current in the starting moment, guaranteed the starting circuit safe operation of electric door lock, improved the life of electric door lock.
Description
Technical Field
The invention relates to the field of electric vehicle burglar alarms, in particular to an electric vehicle burglar alarm electric door lock starting protection circuit.
Background
As shown in fig. 1, which is a schematic diagram of a starting circuit of a prior art electric door lock, a high level is given to a pole Q2 b of a triode through a signal output end of an Acc out lock head, so that Q2 is conducted; then, by controlling the partial pressure of R7 and R8 in the driving circuit, vgs generates a voltage difference of about 1/4Vcc, and the maximum Vgs is not more than 25V; then charging and discharging the C8 capacitor to control the Vgs rising edge so as to realize P-MOS conduction; the longer the Vgs rising edge time is, the longer the P-MOS conduction time is, and the control of the conduction internal resistance is realized by prolonging the conduction time of the P-MOS, so that the control of the conduction current of the P-MOS tube is realized.
The junction capacitance of Vgs can be increased due to charge and discharge of a C8 capacitor in the control circuit, so that the rising edge time of the Vgs is overlong, the conduction speed is reduced, the conduction internal resistance is increased, the junction temperature Tj of the P-MOS tube rises instantly, and the junction temperature cannot be diffused in a short time, so that the breakdown of a P-MOS internal chip is caused. The P-MOS transistor G, S is shorted. By adopting the control circuit, the capacitive and inductive loads of the electric door lock circuit are charged at the moment of opening the electric door lock, when the peak current of the P-MOS is VCC=48V, IDMAX is larger than 80A, the duration of TD is 20US, and the circuit has the hidden danger of fire.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an electric door lock starting circuit of an electric vehicle burglar alarm, which reduces fire hidden danger caused by starting moment in a soft starting mode.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows: the electric door lock starting circuit of the electric vehicle burglar alarm comprises a control driving circuit and a lock driving circuit, wherein the MCU outputs an electric door lock control signal to the lock driving circuit, the output end of the lock driving circuit is connected with the input end of the control driving circuit, and the output end of the control driving circuit is connected with an electric door lock; the system also comprises a soft start protection circuit and a soft start detection circuit, wherein the MCU sends a PWM signal to the soft start protection circuit, and the output end of the soft start protection circuit is connected with the electric door lock; the soft start detection circuit is used for detecting whether the soft start is effective or not and feeding back a signal to the input end of the MCU.
The soft start protection circuit comprises a resistor R10, a resistor R11, a resistor R12, a resistor R13, a triode Q3 and a triode Q4, wherein the output end of the MCU is connected with the base electrode of the triode Q4 through the resistor R11, the collector electrode of the triode Q4 is connected with the base electrode of the triode Q3 through the resistor R10, the collector electrode of the triode Q3 is connected with an electric door lock circuit, and the base electrode and the transmitter of the triode are respectively connected with a power VCC through the resistors R12 and R13.
The soft start detection circuit comprises resistors R2, R3 and R5 and a capacitor C7, the electric door lock circuit is connected with the MCU input end after passing through the resistors R3 and R2, and the electric door lock circuit is grounded between the resistors R2 and R3 through the resistor R5 and the capacitor C7 respectively.
The control driving circuit comprises resistors R7, R8 and a P-MOS tube M1, the output end of the lock driving circuit is connected to the grid electrode of the P-MOS tube M1 after passing through the resistor R7, the drain electrode of the P-MOS tube M1 is connected with the electric gate lock, the source electrode of the P-MOS tube M1 is connected with VCC, and the grid electrode of the P-MOS tube M1 is connected with VCC through the resistor R8.
The driving circuit comprises a triode Q2 and a resistor R9, the output end of the MCU lock head control signal is connected with the base electrode of the triode Q2, the collector electrode of the triode Q2 is connected with the input end of the control driving circuit, and the emitter electrode of the triode Q2 is grounded.
According to the starting method of the electric door lock starting circuit of the electric vehicle burglar alarm, the MCU firstly sends a PWM signal to the soft start protection circuit, controls the triode Q3 to be conducted, and then charges capacitive and inductive loads in the electric door lock; and then the soft start detection circuit detects whether the soft start is effective, when the soft start is detected to be effective, the MCU stops outputting PWM signals, the MCU outputs an electric gate lock control signal to the driving circuit to control the triode Q2 to be conducted, the voltage division grid electrodes of R7 and R8 in the driving circuit are controlled to generate pressure difference, the P-MOS realizes the conduction control of large current, the P-MOS is conducted, and the drain electrode is used for driving the electric gate lock to be started.
The invention has the advantages that: through soft start protection circuit and soft start detection circuit, charge in advance capacitive, the resistive circuit in the electric door lock, prevent that the electric door lock from appearing the overheated fire of circuit because charging voltage, too big appearance of electric current in the starting moment, guaranteed the starting circuit safe operation of electric door lock, improved the life of electric door lock.
Drawings
The contents of the drawings and the marks in the drawings of the present specification are briefly described as follows:
FIG. 1 shows a prior art starting circuit for an electric door lock of an burglar alarm.
Fig. 2 shows an electric door lock starting circuit with starting protection according to the invention.
Detailed Description
The following detailed description of the invention refers to the accompanying drawings, which illustrate preferred embodiments of the invention in further detail.
As shown in fig. 2, the electric door lock starting circuit of the electric vehicle burglar alarm comprises a control driving circuit and a lock driving circuit, wherein the MCU outputs an electric door lock control signal to the lock driving circuit, the output end of the lock driving circuit is connected with the input end of the control driving circuit, and the output end of the control driving circuit is connected with an electric door lock; the system also comprises a soft start protection circuit and a soft start detection circuit, wherein the MCU sends a PWM signal to the soft start protection circuit, and the output end of the soft start protection circuit is connected with the electric door lock; the soft start detection circuit is used for detecting whether the soft start circuit is effective or not and feeding back a signal to the input end of the MCU.
The soft start protection circuit comprises a resistor R10, a resistor R11, a resistor R12, a resistor R13, a triode Q3 and a triode Q4, wherein the output end of the MCU is connected with the base electrode of the triode Q4 through the resistor R11, the collector electrode of the triode Q4 is connected with the base electrode of the triode Q3 through the resistor R10, the collector electrode of the triode Q3 is connected with an electric door lock circuit, and the base electrode and the emitter electrode of the triode are respectively connected with a power VCC through the resistors R12 and R13, and the emitter electrode of the triode Q4 is grounded.
The soft start detection circuit comprises resistors R2 and R3 and capacitors C5 and C7, the electric door lock circuit is connected with the MCU input end after passing through the resistors R3 and R2, and the electric door lock circuit is grounded between the resistors R2 and R3 through the resistor R5 and the capacitor C7 respectively. The control driving circuit comprises resistors R7, R8 and a P-MOS tube M1, the output end of the lock driving circuit is connected to the grid electrode of the P-MOS tube M1 after passing through the resistor R7, the drain electrode of the P-MOS tube M1 is connected with the electric gate lock, the source electrode of the P-MOS tube M1 is connected with VCC, and the grid electrode of the P-MOS tube M1 is connected with VCC through the resistor R8. The driving circuit comprises a triode Q2 and a resistor R9, the output end of the MCU lock head control signal is connected with the base electrode of the triode Q2, the collector electrode of the triode Q2 is connected with the input end of the control driving circuit, and the emitter electrode of the triode Q2 is grounded.
According to the starting method of the electric door lock starting circuit of the electric vehicle burglar alarm, the MCU firstly sends a PWM signal to the soft start protection circuit, the triode Q3 is controlled to be continuously turned on and off, and then capacitive and inductive loads in the electric door lock are charged; and then the soft start detection circuit detects whether the soft start is effective, when the soft start is detected to be effective, the MCU stops outputting PWM signals, the MCU outputs an electric gate lock control signal to the driving circuit to control the triode Q2 to be conducted, the voltage division grid electrodes of R7 and R8 in the driving circuit are controlled to generate pressure difference, the P-MOS realizes the conduction control of large current, the P-MOS is conducted, and the drain electrode is used for driving the electric gate lock to be started.
A triode Q4 in the soft start protection circuit enables Q3 to be conducted according to a PWM signal sent by the MCU, and capacitive load and inductive load on the ACC lock circuit are charged in advance; the charging current range is set at 200-300mA; the charging time is about 0.5 seconds; MCU judges whether the soft start is effective or not through a soft start detection circuit, the detection time is 20-50MS, if the soft start is effective, PWM is closed, the signal output end of the lock head gives a high level to the base electrode of the triode Q2, and the Q2 is conducted; then, by controlling the partial pressure of R7 and R8 in the driving circuit to cause Vgs to generate pressure difference, the pressure difference value is 1/4Vcc, and the P-MOS realizes the conduction control of large current and P-MOS conduction; and otherwise, detecting that the invalid P-MOS tube does not work.
The soft start protection circuit is used for starting the electric door lock, and has the following advantages: the whole lock head is electrified to play a role in delaying, so that the service life of the product is prolonged; avoid breakdown burning out of the P-MOS tube caused by overlarge current at the moment of starting, the ignition of the product is caused, and the safety performance of the whole vehicle is enhanced; the reject ratio is reduced, the damage reject ratio of the non-start protection product due to the breakdown of the MOS tube is 4.6PPM, and the adjustment is 0.05PPM.
It is obvious that the specific implementation of the present invention is not limited by the above-mentioned modes, and that it is within the scope of protection of the present invention only to adopt various insubstantial modifications made by the method conception and technical scheme of the present invention.
Claims (5)
1. The electric door lock starting circuit of the electric vehicle burglar alarm comprises a control driving circuit and a lock driving circuit, wherein the MCU outputs an electric door lock control signal to the lock driving circuit, the output end of the lock driving circuit is connected with the input end of the control driving circuit, and the output end of the control driving circuit is connected with an electric door lock; the method is characterized in that: the system also comprises a soft start protection circuit and a soft start detection circuit, wherein the MCU sends a PWM signal to the soft start protection circuit, and the output end of the soft start protection circuit is connected with the electric door lock; the soft start detection circuit is used for detecting whether the soft start is effective or not and feeding back a signal to the input end of the MCU;
the soft start detection circuit comprises resistors R2, R3 and R5 and a capacitor C7, the electric door lock circuit is connected with the input end of the MCU after passing through the resistors R3 and R2, and the electric door lock circuit is grounded between the resistors R2 and R3 through the resistor R5 and the capacitor C7 respectively;
when the soft start is detected to be effective, the MCU stops outputting the PWM signal, and the MCU outputs an electric door lock control signal to the driving circuit.
2. The electric door lock starting circuit of the electric vehicle burglar alarm as claimed in claim 1, wherein: the soft start protection circuit comprises a resistor R10, a resistor R11, a resistor R12, a resistor R13, a triode Q3 and a triode Q4, wherein the output end of the MCU is connected with the base electrode of the triode Q4 through the resistor R11, the collector electrode of the triode Q4 is connected with the base electrode of the triode Q3 through the resistor R10, the collector electrode of the triode Q3 is connected with an electric door lock circuit, and the base electrode and the emitter electrode of the triode are respectively connected with a power VCC through the resistors R12 and R13.
3. The electric door lock starting circuit of the electric vehicle burglar alarm as claimed in claim 1, wherein: the control driving circuit comprises resistors R7, R8 and a P-MOS tube M1, the output end of the lock driving circuit is connected to the grid electrode of the P-MOS tube M1 after passing through the resistor R7, the drain electrode of the P-MOS tube M1 is connected with the electric gate lock, the source electrode of the P-MOS tube M1 is connected with VCC, and the grid electrode of the P-MOS tube M1 is connected with VCC through the resistor R8.
4. The electric door lock starting circuit of the electric vehicle burglar alarm as claimed in claim 1, wherein: the driving circuit comprises a triode Q2 and a resistor R9, the output end of the MCU lock head control signal is connected with the base electrode of the triode Q2, the collector electrode of the triode Q2 is connected with the input end of the control driving circuit, and the emitter electrode of the triode Q2 is grounded.
5. A method for starting an electric door lock starting circuit of an electric vehicle burglar alarm according to any one of claims 1 to 4, characterized in that: the MCU firstly sends a PWM signal to the soft start protection circuit, controls the triode Q3 to be conducted, and then charges capacitive load and inductive load in the electric door lock; and then the soft start detection circuit detects whether the soft start is effective, when the soft start is detected to be effective, the MCU stops outputting PWM signals, the MCU outputs an electric gate lock control signal to the driving circuit to control the triode Q2 to be conducted, the voltage division grid electrodes of R7 and R8 in the driving circuit are controlled to generate pressure difference, the P-MOS realizes the conduction control of large current, the P-MOS is conducted, and the drain electrode is used for driving the electric gate lock to be started.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711418520.4A CN107947553B (en) | 2017-12-25 | 2017-12-25 | Electric door lock starting circuit and method for electric vehicle burglar alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711418520.4A CN107947553B (en) | 2017-12-25 | 2017-12-25 | Electric door lock starting circuit and method for electric vehicle burglar alarm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107947553A CN107947553A (en) | 2018-04-20 |
| CN107947553B true CN107947553B (en) | 2024-02-02 |
Family
ID=61939982
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711418520.4A Active CN107947553B (en) | 2017-12-25 | 2017-12-25 | Electric door lock starting circuit and method for electric vehicle burglar alarm |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107947553B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110874094A (en) * | 2018-09-04 | 2020-03-10 | 西门子（中国）有限公司 | Detection device and detection system of soft starter |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100107240A (en) * | 2009-03-25 | 2010-10-05 | 주식회사 케이이씨 | Switching mode power supply having function of soft start and over load protection |
| CN107171544A (en) * | 2017-05-23 | 2017-09-15 | 杭州电子科技大学 | A kind of full digital full-bridge isolated single-phase single-grade PFC（PFC）Converter |
| CN207853748U (en) * | 2017-12-25 | 2018-09-11 | 安徽天瑞电子科技有限公司 | A kind of safety device of electric vehicle electric door lock start-up circuit |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7088078B2 (en) * | 2004-06-04 | 2006-08-08 | Astec International Limited | Soft-start circuit for power converters |
| TWI463785B (en) * | 2011-09-21 | 2014-12-01 | Amtek Semiconductor Co Ltd | Motor driving apparatus |
-
2017
- 2017-12-25 CN CN201711418520.4A patent/CN107947553B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20100107240A (en) * | 2009-03-25 | 2010-10-05 | 주식회사 케이이씨 | Switching mode power supply having function of soft start and over load protection |
| CN107171544A (en) * | 2017-05-23 | 2017-09-15 | 杭州电子科技大学 | A kind of full digital full-bridge isolated single-phase single-grade PFC（PFC）Converter |
| CN207853748U (en) * | 2017-12-25 | 2018-09-11 | 安徽天瑞电子科技有限公司 | A kind of safety device of electric vehicle electric door lock start-up circuit |
Non-Patent Citations (1)
| Title |
|---|
| 基于嵌入式操作系统的智能软启动器设计;张卫江;党宏社;;湘潭大学自然科学学报(02);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107947553A (en) | 2018-04-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2591078B2 (en) | Ignition device for internal combustion engine | |
| JP7425173B2 (en) | switch device | |
| JP4221024B2 (en) | Ignition device for ignition control system for internal combustion engine | |
| GB1359055A (en) | Ignition systems | |
| JP7201385B2 (en) | switch device | |
| CN107947553B (en) | Electric door lock starting circuit and method for electric vehicle burglar alarm | |
| JP2012172572A (en) | Semiconductor device having current control function and self shut down function | |
| JP4445021B2 (en) | Internal combustion engine ignition device | |
| US4525125A (en) | Pressure responsive pump control system having an alarm lamp | |
| US6378513B1 (en) | Multicharge ignition system having secondary current feedback to trigger start of recharge event | |
| JP7293736B2 (en) | semiconductor integrated circuit | |
| CN207853748U (en) | A kind of safety device of electric vehicle electric door lock start-up circuit | |
| CN108933304B (en) | New energy automobile battery starting drive | |
| JP2004159424A (en) | Inverter | |
| EP0405415A2 (en) | Warning system for an engine | |
| JPH0429876B2 (en) | ||
| JP6102721B2 (en) | Power storage device and battery device | |
| JP3608685B2 (en) | AC-CDI ignition device | |
| CN116647028B (en) | Switching power supply control circuit, vehicle-mounted system and vehicle | |
| US20220120251A1 (en) | Electronic device to control an ignition coil of an internal combustion engine and electronic ignition system thereof for detecting a misfire in the internal combustion engine | |
| US20220136477A1 (en) | Electronic device to control an ignition coil of an internal combustion engine and electronic ignition system thereof for detecting a pre-ignition in the internal combustion engine | |
| US20220275783A1 (en) | Electronic device and control system of an ignition coil in an internal combustion engine | |
| JPS6018626Y2 (en) | Glow plug timer for diesel cars | |
| JPH064063Y2 (en) | Glow plug preheating controller | |
| CN115853690A (en) | Ignition module with high-frequency long-conduction protection function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |