CN111301171A - Electric vehicle getting-off power-off safety circuit and method - Google Patents
Electric vehicle getting-off power-off safety circuit and method Download PDFInfo
- Publication number
- CN111301171A CN111301171A CN202010082566.9A CN202010082566A CN111301171A CN 111301171 A CN111301171 A CN 111301171A CN 202010082566 A CN202010082566 A CN 202010082566A CN 111301171 A CN111301171 A CN 111301171A
- Authority
- CN
- China
- Prior art keywords
- relay
- electric vehicle
- circuit
- resistor
- power supply
- 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.)
- Pending
Links
Images
Classifications
-
- 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
- B60L3/04—Cutting off the power supply under fault conditions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
- B62M6/40—Rider propelled cycles with auxiliary electric motor
- B62M6/45—Control or actuating devices therefor
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention provides a power-off safety circuit and a power-off method for getting off an electric vehicle, wherein the circuit comprises the following components: the device comprises a bias circuit, a pressure sensor, a relay driving circuit and a relay; the bias circuit is used for generating a direct current bias voltage; the pressure sensor is arranged below the electric vehicle seat, and when the pressure sensor is switched on or switched off, the direct current bias voltage enters or does not enter the relay driving circuit; the relay driving circuit is used for controlling the on or off of the relay; the relay is connected to the power supply circuit of the electric vehicle and used for switching on or switching off the power supply of the electric vehicle. The pressure sensor arranged below the electric vehicle seat senses whether a person is on the seat, the power supply of the electric vehicle is switched on in a riding state, and the power supply of the electric vehicle is switched off in a pushing state, so that the danger caused by the mistaken starting of the electric vehicle in pushing is avoided.
Description
Technical Field
The invention relates to the technical field of electronics, in particular to a power-off safety circuit and a power-off method for getting-off of an electric vehicle.
Background
The electric lock of the existing electric vehicle is the only circuit master switch on the electric vehicle, and under the general condition, when the electric lock is in the closed state, the electric vehicle can not be started. However, when a driver pushes the electric vehicle, the electric lock of the electric vehicle is forgotten to be closed, the electric vehicle can be started to run when the speed regulating handle switch is unintentionally rotated, the driver pulls the electric vehicle backwards due to instinct force, the electric vehicle often unintentionally twists the handlebar backwards, enters an acceleration state, a sudden forward fleeing dangerous situation occurs, and the accident of hurting people due to vehicle rollover is easily caused.
Therefore, a power-off safety circuit for getting-off of an electric vehicle is urgently needed to avoid the electric vehicle from being started by mistake during pushing.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art, and provides a power-off safety circuit and a power-off method for getting off an electric vehicle, which can sense whether a person is on a seat through a pressure sensor arranged below the seat of the electric vehicle, switch on a power supply of the electric vehicle in a riding state, and switch off the power supply of the electric vehicle in a pushing state, so as to avoid the false start of the electric vehicle in pushing.
The invention provides a power-off safety circuit for getting-off of an electric vehicle, which comprises: the device comprises a bias circuit, a pressure sensor, a relay driving circuit and a relay;
the bias circuit is used for generating a direct current bias voltage;
the pressure sensor is arranged below the electric vehicle seat, and when the pressure sensor is switched on or switched off, the direct current bias voltage enters or does not enter the relay driving circuit;
the relay driving circuit is used for controlling the on or off of the relay;
the relay is connected to the power supply circuit of the electric vehicle and used for switching on or switching off the power supply of the electric vehicle.
In the electric vehicle power-off safety circuit according to the present invention, preferably, the bias circuit includes: the circuit comprises a first NPN type triode, a first resistor, a second resistor, a third resistor and a fourth resistor; the first resistor and the second resistor are connected in series and then connected between the positive electrode and the negative electrode of the power supply, and the base electrode of the first NPN type triode is connected to a node between the first resistor and the second resistor; the third resistor is connected between the positive electrode of the power supply and the collector electrode of the first NPN type triode, the fourth resistor is connected between the emitter of the first NPN type triode and the negative electrode of the power supply, and the emitter of the first NPN type triode is connected to the output end of the biasing circuit.
In the electric vehicle power-off safety circuit according to the present invention, preferably, one end of the pressure sensor is connected to an output terminal of the bias circuit, and the other end of the pressure sensor is connected to an input terminal of the relay driving circuit.
In the electric vehicle power-off safety circuit according to the present invention, preferably, the relay driving circuit includes: the first diode, the second NPN type triode, the fifth resistor and the first capacitor; the anode of the first diode is connected with the input end of the relay drive circuit, and the cathode of the first diode is connected with the base of the second NPN type triode; the fifth resistor and the first capacitor are connected in parallel and then connected between the base electrode of the second NPN type triode and the negative electrode of the power supply; the emitter of the second NPN type triode is connected with the negative electrode of the power supply; the collector of the second NPN type triode is connected with the anode of the second diode and the first end of the coil of the relay; the cathode of the second diode is connected to the second end of the coil of the relay.
In the electric vehicle power-off safety circuit according to the present invention, preferably, the relay is a single-pole single-throw relay.
In the electric vehicle getting-off power-off safety circuit according to the present invention, preferably, a switch of the relay is connected between a positive electrode of the power supply and an output terminal of the electric vehicle getting-off power-off safety circuit; and the second end of the coil of the relay is connected with the positive pole of the power supply.
In the electric vehicle power-off safety circuit according to the present invention, preferably, the pressure sensor is a resistance-type or switch-type pressure sensor.
The invention also provides a power-off method for getting off the electric vehicle, which comprises the following steps:
generating a power control signal through a pressure sensor installed below an electric vehicle seat;
and controlling the on or off of the relay according to the power supply control signal so as to switch on or off the power supply of the electric vehicle.
The electric vehicle getting-off power-off safety circuit and the electric vehicle getting-off power-off method have the following beneficial effects: the pressure sensor arranged below the electric vehicle seat senses whether a person is on the seat, the power supply of the electric vehicle is switched on in a riding state, and the power supply of the electric vehicle is switched off in a pushing state, so that the danger caused by the mistaken starting of the electric vehicle in pushing is avoided.
Drawings
FIG. 1 is a schematic block diagram of a power-off safety circuit for an electric vehicle in accordance with a preferred embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a power-off safety circuit of an electric vehicle according to a preferred embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Fig. 1 is a schematic block diagram of a power-off safety circuit of an electric vehicle according to a preferred embodiment of the present invention. As shown in fig. 1, the electric vehicle power-off safety circuit provided in this embodiment includes: bias circuit 1, pressure sensor S2, relay drive circuit 3, and relay K4.
The bias circuit 1 is used for generating a dc bias voltage. The input terminal of the bias circuit 1 may be connected to the power supply of the electric vehicle, for example, the downstream terminal of the power supply electric lock switch. The pressure sensor S2 is installed under the electric vehicle seat, and when the pressure sensor S2 is turned on or off, the dc bias voltage enters or does not enter the relay drive circuit 3. The relay driving circuit 3 is used for controlling the on or off of the relay K4; the relay K4 is connected to the power circuit of the electric vehicle and is used for switching on or off the power supply of the electric vehicle. The output of the relay K4 can be connected to the motor circuit.
For example, the bias circuit 1 generates a dc bias voltage of about 2V; the pressure sensor S2 senses whether a person sits on the seat, the output signal is resistance, the resistance is 0 or low resistance when the seat sits on the seat, and the output resistance is open circuit or high resistance when the seat does not sit on the seat. When the pressure sensor S2 is turned on (low resistance) or turned off (high resistance), the dc bias voltage enters or does not enter the relay driving circuit 3 through the pressure switch, so that the transistor in the relay driving circuit 3 is turned on or off. The triode of the relay driving circuit 3 is turned on or off, so that the relay K4 is turned on or off, and the main power supply of the electric vehicle is switched on or off.
Fig. 2 is a schematic circuit diagram of a power-off safety circuit for getting off a vehicle according to a preferred embodiment of the present invention. As shown in fig. 2, the circuits may, but are not limited to, employ the following specific implementations.
In practical applications, the bias circuit 1 may be an emitter follower circuit implemented by an NPN-type transistor, and the output voltage may be adjusted by using the first resistor R1 and the second resistor R2. Therefore, preferably, the bias circuit 1 includes: the circuit comprises a first NPN type triode Q1, a first resistor R1, a second resistor R2, a third resistor R3 and a fourth resistor R4.
The first resistor R1 and the second resistor R2 are connected in series and then connected between the positive pole and the negative pole of the power supply, and the base of the first NPN type triode Q1 is connected to the node between the first resistor R1 and the second resistor R2. The third resistor R3 is connected between the positive electrode of the power supply and the collector of the first NPN transistor Q1, the fourth resistor R4 is connected between the emitter of the first NPN transistor Q1 and the negative electrode of the power supply, and the emitter of the first NPN transistor Q1 is connected to the output terminal of the bias circuit.
The output voltage of the bias circuit 1 is the voltage value obtained by dividing the voltage by the first resistor R1 and the second resistor R2 minus 0.7V (emitter junction voltage drop of the first NPN transistor Q1). In practical use, the first resistor R1 and the second resistor R2 cannot be too large or too small, when the first resistor R1 and the second resistor R2 are too large, the current flowing through the first resistor R1 and the second resistor R2 is too small, the base current of the first NPN transistor Q1 has too large influence on the divided voltage value, the bias voltage may become low, and when the first resistor R1 and the second resistor R2 are too small, the power consumption may become too large.
The pressure sensor S2 is preferably a resistance type or switch type pressure sensor. One end of the pressure sensor S2 is connected to the output end of the bias circuit 1, i.e. the emitter of the first NPN transistor Q1. The other end of the pressure sensor S2 is connected to an input terminal of the relay drive circuit 3.
In an alternative implementation, the relay driver circuit 3 may be a switching circuit implemented by an NPN-type transistor. Preferably, the relay drive circuit 3 includes: the circuit comprises a first diode D1, a second diode D2, a second NPN type triode Q2, a fifth resistor R5 and a first capacitor C1. An anode of the first diode D1 is connected to an input terminal of the relay driver circuit 3, and a cathode of the first diode D1 is connected to a base of the second NPN transistor Q2. The fifth resistor R5 and the first capacitor are connected in parallel and then connected between the base of the second NPN type triode Q2 and the negative electrode of the power supply. An emitter of the second NPN transistor Q2 is connected to a negative electrode of the power supply, and a collector of the second NPN transistor Q2 is connected to an anode of the second diode D2 and a first end of the coil of the relay K4. The cathode of the second diode D2 is connected to the second end of the coil of the relay K4.
Relay K4 may be selected as a single pole, single throw relay. The switch of the relay K4 is connected between the positive pole of the power supply and the output end of the power-off safety circuit of the electric vehicle; and a second end of the coil of the relay K4 is connected to the positive pole of the power supply.
The first capacitor C1 and the fifth resistor R5 in the relay driving circuit 3 are used for filtering transient interference signals generated by the pressure sensor S2 due to bumping when the riding is not good, and the time length of the interference signals which can be filtered is in direct proportion to R5 × C1. The first diode D1 is used to discharge the first capacitor C1 only through the fifth resistor R5, so that the time constant of the RC circuit formed by the fifth resistor R5 and the first capacitor C1 can be calculated. The second diode D2 acts as a freewheeling diode to prevent the second NPN transistor Q2 from being damaged by induced voltage generated due to sudden current change when the relay K4 is de-energized.
The invention also provides a power-off method for getting off the electric vehicle, which comprises the following steps:
(1) the power control signal, such as a power-off signal or a power-on signal, is generated by a pressure sensor installed under the seat of the electric vehicle. In one embodiment, the power control signal may be output by the aforementioned power-off safety circuit for an electric vehicle, that is, by the bias circuit 1 and the pressure sensor S2.
(2) And controlling the on or off of the relay according to the power supply control signal so as to switch on or off the power supply of the electric vehicle. When the electrifying signal is generated, the coil of the relay is controlled to be electrified, the switch of the relay is switched on, and therefore the power supply of the electric vehicle is switched on. When a power-off signal is generated, the coil of the relay is controlled to be powered off, and the switch of the relay is switched off, so that the power supply of the electric vehicle is switched off. The step can also be realized by the electric vehicle getting-off power-off safety circuit, namely, the power supply of the electric vehicle is controlled to be switched on and off by the relay driving circuit 3 and the relay K4.
In summary, in the technical solution of the embodiment of the present invention, the bias circuit 1 generates a dc bias voltage of about 2V; the pressure sensor S2 senses whether a person sits on the seat, the output signal is a resistor, the resistor is 0 or low when the seat sits on the seat, and the output resistor is open or high when the seat does not sit on the seat; when the pressure sensor S2 is turned on (low resistance) or turned off (high resistance), the dc bias voltage enters or does not enter the relay driving circuit 3 through the pressure switch, so that the transistor in the relay driving circuit 3 is turned on or off; the triode of the relay driving circuit 3 is turned on or off, so that the relay K4 is turned on or off, and the main power supply of the electric vehicle is switched on or off. Through the circuit design, the power supply of the electric vehicle is automatically cut off when the electric vehicle is driven off and pushed, so that the danger caused by the fact that the electric vehicle is accidentally started by rotating the handle during pushing due to forgetting to close the electric switch is avoided.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. The utility model provides an electric motor car outage safety circuit which characterized in that includes: the device comprises a bias circuit, a pressure sensor, a relay driving circuit and a relay;
the bias circuit is used for generating a direct current bias voltage;
the pressure sensor is arranged below the electric vehicle seat, and when the pressure sensor is switched on or switched off, the direct current bias voltage enters or does not enter the relay driving circuit;
the relay driving circuit is used for controlling the on or off of the relay;
the relay is connected to the power supply circuit of the electric vehicle and used for switching on or switching off the power supply of the electric vehicle.
2. The electrical discharge vehicle power-off safety circuit as recited in claim 1, wherein the bias circuit comprises: the circuit comprises a first NPN type triode, a first resistor, a second resistor, a third resistor and a fourth resistor;
the first resistor and the second resistor are connected in series and then connected between the positive electrode and the negative electrode of the power supply, and the base electrode of the first NPN type triode is connected to a node between the first resistor and the second resistor; the third resistor is connected between the positive electrode of the power supply and the collector electrode of the first NPN type triode, the fourth resistor is connected between the emitter of the first NPN type triode and the negative electrode of the power supply, and the emitter of the first NPN type triode is connected to the output end of the biasing circuit.
3. The electrical discharge vehicle power-off safety circuit as claimed in claim 2, wherein one end of the pressure sensor is connected to the output terminal of the bias circuit, and the other end of the pressure sensor is connected to the input terminal of the relay driving circuit.
4. The electrical discharge vehicle power-off safety circuit as recited in claim 3, wherein the relay driving circuit comprises: the first diode, the second NPN type triode, the fifth resistor and the first capacitor;
the anode of the first diode is connected with the input end of the relay drive circuit, and the cathode of the first diode is connected with the base of the second NPN type triode; the fifth resistor and the first capacitor are connected in parallel and then connected between the base electrode of the second NPN type triode and the negative electrode of the power supply; the emitter of the second NPN type triode is connected with the negative electrode of the power supply; the collector of the second NPN type triode is connected with the anode of the second diode and the first end of the coil of the relay; the cathode of the second diode is connected to the second end of the coil of the relay.
5. The getting-off safety circuit of the electric vehicle as claimed in claim 4, wherein the relay is a single-pole single-throw relay.
6. The electric vehicle getting-off power-off safety circuit as claimed in claim 5, wherein a switch of the relay is connected between a positive electrode of a power supply and an output end of the electric vehicle getting-off power-off safety circuit; and the second end of the coil of the relay is connected with the positive pole of the power supply.
7. The electrical discharge vehicle power-off safety circuit as claimed in claim 1, wherein the pressure sensor is a resistance-type or switch-type pressure sensor.
8. A power-off method for getting off an electric vehicle is characterized by comprising the following steps:
generating a power control signal through a pressure sensor installed below an electric vehicle seat;
and controlling the on or off of the relay according to the power supply control signal so as to switch on or off the power supply of the electric vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010082566.9A CN111301171A (en) | 2020-02-07 | 2020-02-07 | Electric vehicle getting-off power-off safety circuit and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010082566.9A CN111301171A (en) | 2020-02-07 | 2020-02-07 | Electric vehicle getting-off power-off safety circuit and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111301171A true CN111301171A (en) | 2020-06-19 |
Family
ID=71150823
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010082566.9A Pending CN111301171A (en) | 2020-02-07 | 2020-02-07 | Electric vehicle getting-off power-off safety circuit and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111301171A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113135254A (en) * | 2021-04-17 | 2021-07-20 | 深圳市威特利电源有限公司 | Tracking charging system and method for electric riding vehicle |
| CN113689638A (en) * | 2021-08-06 | 2021-11-23 | 盐城师范学院 | Safe and intelligent swim ring and alarm method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2905254B2 (en) * | 1990-04-16 | 1999-06-14 | 株式会社二輪整備技術研究所 | Theft alarm for motorcycles |
| CN203876683U (en) * | 2014-06-07 | 2014-10-15 | 杭州汽车高级技工学校 | Car cigarette lighter power source automatic control device based on pressure detection |
| CN104139825A (en) * | 2014-06-27 | 2014-11-12 | 桂林浩新科技服务有限公司 | Electric bicycle with anti-flying safety device |
| CN203957889U (en) * | 2014-06-10 | 2014-11-26 | 喜特绿能科技股份有限公司 | Explosion-proof security device of electric vehicle |
| CN104724052A (en) * | 2015-01-07 | 2015-06-24 | 上海大学 | Detection protection system preventing mis-starting of electric bicycle |
-
2020
- 2020-02-07 CN CN202010082566.9A patent/CN111301171A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2905254B2 (en) * | 1990-04-16 | 1999-06-14 | 株式会社二輪整備技術研究所 | Theft alarm for motorcycles |
| CN203876683U (en) * | 2014-06-07 | 2014-10-15 | 杭州汽车高级技工学校 | Car cigarette lighter power source automatic control device based on pressure detection |
| CN203957889U (en) * | 2014-06-10 | 2014-11-26 | 喜特绿能科技股份有限公司 | Explosion-proof security device of electric vehicle |
| CN104139825A (en) * | 2014-06-27 | 2014-11-12 | 桂林浩新科技服务有限公司 | Electric bicycle with anti-flying safety device |
| CN104724052A (en) * | 2015-01-07 | 2015-06-24 | 上海大学 | Detection protection system preventing mis-starting of electric bicycle |
Non-Patent Citations (2)
| Title |
|---|
| 张媛: "《低频电子电路》", 31 August 2017, 西安电子科技大学出版社 * |
| 胡锦: "《数字电路与逻辑设计》", 31 December 2002, 高等教育出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113135254A (en) * | 2021-04-17 | 2021-07-20 | 深圳市威特利电源有限公司 | Tracking charging system and method for electric riding vehicle |
| CN113135254B (en) * | 2021-04-17 | 2022-07-22 | 深圳市威特利电源有限公司 | Tracking charging system and method for electric riding vehicle |
| CN113689638A (en) * | 2021-08-06 | 2021-11-23 | 盐城师范学院 | Safe and intelligent swim ring and alarm method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3639189B2 (en) | Load drive circuit | |
| CN111301171A (en) | Electric vehicle getting-off power-off safety circuit and method | |
| JP2003046380A (en) | Load drive circuit | |
| GB1576822A (en) | Electromagnetically operated contactors | |
| CN112881937B (en) | Safety detection device and method for direct-current power supply system | |
| JP2002176346A (en) | Device for driving inductive load | |
| US5229745A (en) | Oil pressure alarm device for motor vehicle | |
| CN210807208U (en) | Auxiliary power supply switch circuit | |
| KR20060109974A (en) | Circuit system and method for controlling an inductive consumer | |
| JP2001216878A (en) | Switching condition monitoring circuit and switch | |
| CN214044996U (en) | PE wire protection system of electricity consumption and charging device and electricity consumption and charging device | |
| JPH0624347U (en) | Overcurrent monitoring circuit | |
| KR19990082549A (en) | A device comprising a thermal protection switching transistor | |
| CN112368907A (en) | Circuit arrangement | |
| JP2016225145A (en) | Switch monitoring circuit | |
| JP3200278B2 (en) | Motor controller | |
| US4418311A (en) | Battery charge indicating system | |
| WO2019239876A1 (en) | Vehicle control device | |
| CN113093594A (en) | Interlocking circuit realized by using output characteristic of IO port of single chip microcomputer | |
| JP2017050936A (en) | Abnormality detection circuit and charger | |
| CN218975348U (en) | Intelligent contactor | |
| CN214984841U (en) | Charging protection system for vehicle | |
| CN213752539U (en) | Drive circuit of holding relay | |
| CN114802056A (en) | Automobile limp mode control circuit | |
| JPH0735085Y2 (en) | Control device for power window regulator |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200619 |