CN103151921B - DC power step-down transformer circuit - Google Patents
DC power step-down transformer circuit Download PDFInfo
- Publication number
- CN103151921B CN103151921B CN201310075292.0A CN201310075292A CN103151921B CN 103151921 B CN103151921 B CN 103151921B CN 201310075292 A CN201310075292 A CN 201310075292A CN 103151921 B CN103151921 B CN 103151921B
- Authority
- CN
- China
- Prior art keywords
- resistance
- electric capacity
- power supply
- control chip
- main control
- 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
- 239000003990 capacitor Substances 0.000 claims abstract description 18
- 230000000087 stabilizing effect Effects 0.000 claims description 9
- 238000004804 winding Methods 0.000 claims 4
- 230000005669 field effect Effects 0.000 abstract description 4
- 238000002955 isolation Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 229910044991 metal oxide Inorganic materials 0.000 abstract 1
- 239000004065 semiconductor Substances 0.000 abstract 1
- 230000015556 catabolic process Effects 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 239000004579 marble Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Landscapes
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a DC power step-down transformer circuit, which comprises an overpower protection circuit (1) used for controlling a power master control chip (U1), an overcurrent protection circuit (2) used for controlling a transistor (Q1), an undervoltage protection circuit (3) and an overvoltage protection circuit (4), wherein the collector of the triode (Q1) is connected with the Isense terminal of the power master control chip (U1), and the undervoltage protection circuit (3) comprises a switching diode (VD3); and the cathode of the switching diode (VD3) is connected with the Vcc terminal of the power master control chip (U1), and the overvoltage protection circuit (4) comprises a resistor (R7), a resistor (R8), a capacitor (C9), a Zener diode (VDz2) and a thyristor triode ( VS1). The power has an isolation effect of a transformer. Even if a power metallic oxide semiconductor field effect transistor (MOSFET) is broken down, the 24V voltage at an input terminal does not pass to an output terminal (12V) to damage the electrical equipment. The DC power step-down transformer circuit has the characteristics of low power consumption and high efficiency.
Description
Technical field
The present invention relates to DC power step-down transformer circuit.Be applied to automobile circuit system.
Background technology
Modular power sources that are that the common power supply chip such as use 3842 grade in market makes or that occurred before some are all pulse-width modulation (PWM) power supplys; Though some power supplys have transformer isolation, transformer energy storage, it also belongs to pulse-width modulation (PWM) power supply---they are all the features having fixing and higher operating frequency.
The loss of power supply is mainly determined by the loss of switching tube switch: switching frequency is high, and loss is just large; Switching frequency is low, and loss is just little.
Power supply real work load great majority are in the dynamic case: such as by radio and tape player, news broadcast, theatrical items, are under being more operated in middle power, low-power, under the pause of voice, the interval of music are operated in again pole low-power; Fanatic rock music and so on, it is few for continuing the high-power time.
If power supply, when high-output power, has the organic assembling determining frequency; In, low, pole low-power operation time, switching frequency all reduces along with the reduction of power output, can realize low power consumption high efficiency during this power supply dynamic duty.
Modular power sources that are that the common power supply chip such as use 3842 grade in market makes or that occurred before some, their switch operating frequency is all be fixed on about 100KHz, during their work, when we listen to this frequency or the medium wave amplitude modulation program close to this frequency near at hand, be bound to be interfered; Be applied in television set the interference having light and dark similar " shutter " in addition.
Modular power sources that are that the common power supply chip such as use 3842 grade in market makes or that occurred before some, those do not have the isolation of transformer, if power field effect pipe is wherein breakdown, input terminal voltage (higher), also can, through to its output (lower), can cause damaging power consumption equipment (load).Therefore, need to provide a kind of new technical scheme to solve the problems referred to above.
Summary of the invention
The object of this invention is to provide a kind of DC power step-down transformer circuit with the low power consumption high efficiency of transformer isolation effect.
The technical solution used in the present invention is:
DC power step-down transformer circuit, it comprises
Overpower-protection circuit, it is for controlling power supply main control chip U1;
Current foldback circuit, it is for controlling triode Q1, and the collector electrode of this triode Q1 is held with the Isense of power supply main control chip U1 by resistance R3 and is connected;
Under-voltage protecting circuit, it comprises switching diode VD3, and the negative electrode of switching diode VD3 is held with the Vcc of power supply main control chip U1 and is connected; And
Overvoltage crowbar, it comprises resistance R7, resistance R8, electric capacity C9, voltage stabilizing didoe VDz2 and triode thyrister VS1, the minus earth of this triode thyrister VS1, and the anode of this triode thyrister VS1 is connected with the anode of switching diode VD3.
Described control power supply main control chip U1 comprises Isense end, Vcc end, OUT end, COMP end, Vfb end, Vref end, RT/CT end and GND end;
The Isense end of described control power supply main control chip U1 is connected with the parallel connected end of resistance R10 and resistance R11, and this resistance R11 also contacts with electric capacity C16;
The Vcc end of described control power supply main control chip U1 is connected with the parallel circuits of electric capacity C14 and electrochemical capacitor C15, ground connection after described electric capacity C14 and electrochemical capacitor C15 parallel connection, and the Vcc of described control power supply main control chip U1 holds and is also connected with voltage input end;
The OUT end of described control power supply main control chip U1 is connected with transformer T1 side by electric capacity C22, and described transformer T1 opposite side is connected with power MOSFET pipe VT1 by electric capacity C21;
The COMP end of described control power supply main control chip U1 is contacted with resistance R12 and electric capacity C17, holds be connected after described resistance R12 is connected with electric capacity C17 with the Vfb controlling power supply main control chip U1;
The Vref end of described control power supply main control chip U1 is connected with the anode of electrochemical capacitor C19 and resistance R13 one end respectively, the minus earth of described electrochemical capacitor C19, and the described resistance R13 other end is connected with electric capacity C18 one end, described electric capacity C18 other end ground connection;
The RT/CT end of described control power supply main control chip U1 is connected with the parallel connected end of resistance R10 and resistance R11;
The GND of described control power supply main control chip U1 holds ground connection.
The base stage of described triode Q1 is connected with resistance R2; the emitter of described triode Q1 is connected with electric capacity C4, resistance R1a and resistance R1b respectively; described resistance R1a is connected with resistance R2 with after resistance R1b parallel connection; described resistance R1a is also connected with power MOSFET pipe VT1 with after resistance R1b parallel connection, and described power MOSFET pipe VT1 is connected with the anode of the triode thyrister VS1 of overvoltage crowbar by load L2, load L3.
Resistance R8 in described overvoltage crowbar and electric capacity C9 is connected in parallel; described resistance R8 and electric capacity C9 is connected in parallel rear ground connection; described resistance R8 is connected with voltage stabilizing didoe VDz2; described voltage stabilizing didoe VDz2 is connected with resistance R7; described resistance R7 is connected with the anode of triode thyrister VS1; the gate of described triode thyrister VS1 is connected with electric capacity C9, and described resistance R7 is also connected with voltage output end.
Beneficial effect of the present invention: this power supply has the buffer action of transformer, even if power field effect pipe is wherein breakdown, the 24V voltage of input also through to its output (12V), can not damage power consumption equipment; If output crosses flow short-circuit; there is stronger overpower protection (OPP); low in energy consumption when being characterized as protection; and intermittent oscillation time when crossing flow short-circuit can set; this power supply also has input undervoltage protection (UVP), input overvoltage protection (OVP) and overcurrent protection (OCP) etc.; and can coordinate mutually between them, there is the feature of low power consumption high efficiency.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present invention.
1, overpower-protection circuit, 2, current foldback circuit, 3, under-voltage protecting circuit, 4, overvoltage crowbar.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
Following examples, only for illustration of the present invention, are not used for limiting the scope of the invention.
As shown in Figure 1, DC power step-down transformer circuit of the present invention, it comprises
Overpower-protection circuit 1, it is for controlling power supply main control chip U1, controls power supply main control chip U1 and comprises Isense end, Vcc end, OUT end, COMP end, Vfb end, Vref end, RT/CT end and GND end; The Isense end controlling power supply main control chip U1 is connected with the parallel connected end of resistance R10 and resistance R11, and this resistance R11 also contacts with electric capacity C16; The Vcc end controlling power supply main control chip U1 is connected with the parallel circuits of electric capacity C14 and electrochemical capacitor C15, ground connection after electric capacity C14 and electrochemical capacitor C15 parallel connection, the Vcc end controlling power supply main control chip U1 is also connected with voltage input end, voltage input end comprises resistance R9, electric capacity C1, electrochemical capacitor C2, electric capacity C3 and fly-wheel diode VD1, electrochemical capacitor C2, electric capacity C3 and fly-wheel diode VD1 are connected in parallel, load L1 is added with between electric capacity C1 and fly-wheel diode VD1, electric capacity C3 is connected with resistance R9, and this electric capacity C1 accesses input voltage 12V and 0V in two ends respectively; The OUT end controlling power supply main control chip U1 is connected with transformer T1 side by electric capacity C22, and transformer T1 opposite side is connected with power MOSFET pipe VT1 by electric capacity C21; The COMP end controlling power supply main control chip U1 is contacted with resistance R12 and electric capacity C17, holds be connected after resistance R12 is connected with electric capacity C17 with the Vfb controlling power supply main control chip U1; The Vref end controlling power supply main control chip U1 is connected with the anode of electrochemical capacitor C19 and resistance R13 one end respectively, the minus earth of electrochemical capacitor C19, and the resistance R13 other end is connected with electric capacity C18 one end, electric capacity C18 other end ground connection; The RT/CT end controlling power supply main control chip U1 is connected with the parallel connected end of resistance R10 and resistance R11; The GND controlling power supply main control chip U1 holds ground connection;
Current foldback circuit 2, it is for controlling triode Q1, the collector electrode of this triode Q1 is held with the Isense of power supply main control chip U1 by resistance R3 and is connected, the base stage of triode Q1 is connected with resistance R2, the emitter of triode Q1 is connected with electric capacity C4, resistance R1a and resistance R1b respectively, resistance R1a is connected with resistance R2 with after resistance R1b parallel connection, resistance R1a is also connected with power MOSFET pipe VT1 with after resistance R1b parallel connection, and power MOSFET pipe VT1 is connected with the anode of the triode thyrister VS1 of overvoltage crowbar by load L2, load L3;
Under-voltage protecting circuit 3, it comprises switching diode VD3, and the negative electrode of switching diode VD3 is held with the Vcc of power supply main control chip U1 and is connected; And
Overvoltage crowbar 4, it comprises resistance R7, resistance R8, electric capacity C9, voltage stabilizing didoe VDz2 and triode thyrister VS1, the minus earth of this triode thyrister VS1, and the anode of this triode thyrister VS1 is connected with the anode of switching diode VD3; Resistance R8 in overvoltage crowbar and electric capacity C9 is connected in parallel; resistance R8 and electric capacity C9 is connected in parallel rear ground connection; resistance R8 is connected with voltage stabilizing didoe VDz2; voltage stabilizing didoe VDz2 is connected with resistance R7; resistance R7 is connected with the anode of triode thyrister VS1; the gate of triode thyrister VS1 is connected with electric capacity C9; resistance R7 is also connected with voltage output end; this voltage output end comprises electrochemical capacitor C13 and electric capacity C11; ground connection after electrochemical capacitor C13 and electric capacity C11 parallel connection, electric capacity C11 two ends are output voltage 12V and 0V respectively.
Be connected to the parallel circuits of electrochemical capacitor C5 and electric capacity C6 between current foldback circuit 2 and power MOSFET pipe VT1, between the anode of power MOSFET pipe VT1 and triode thyrister VS1, be connected to the series circuit of chip U2 and rectifier diode VD1.
This power supply uses in audio-visual equipment, and when the audio frequency and video for car audio system exports, its power consumption is almost constantly in change, and therefore its operating frequency is also almost constantly in change; Even if under fixing loading condition, this power supply also implements frequency jitter, can reduce electromagnetic interference.
This power supply have employed the low as far as possible and technology of frequency change of frequency, and these also improve its Electro Magnetic Compatibility simultaneously.
This power supply has the buffer action of transformer, even if power field effect pipe is wherein breakdown, the 24V voltage of input also through to its output (12V), can not damage power consumption equipment.
If output crosses flow short-circuit; there is stronger overpower protection (OPP); low in energy consumption when being characterized as protection; and intermittent oscillation time when crossing flow short-circuit can set; this power supply also has input undervoltage protection (UVP), input overvoltage protection (OVP) and overcurrent protection (OCP) etc.; and can coordinate mutually between them, the break opening contact of overcurrent protection (OCP) regulates easily.
The outer member of this power supply minimum number, material cost is not high.
Experimentally draw:
During output current 8.5A, this power supply is still operated in critical condition, switching waveform marshalling;
During output current 10A, the voltage waveform on the source resistance of switching tube is also without any saturated sign;
Maximum output current: when exporting 12A, the protected cut-off of this power supply exports.
Adjustment of load: output current 11A → zero load, output voltage 11.23V → 11.49V(Iout5.8A) → 11.81V(Iout0.76A) → 11.86V.
Efficiency: output current 1A, efficiency 84%; Output current 3A, efficiency 79%; Output current 7A, efficiency 74%.Because more consider maximum output current and peak power output, so got 2mm between the air gap of core center post; But according to actual loading needs, if can reduce output current maximum a bit and peak power output, so efficiency can improve further.(power consumption when these are all nominal loads.）
Degree of aging: on marble slab, calm, output current 7A, continues more than 2 hour, external skin temperatures 51 °, interior space temperature 60 °, and thermal diffusivity is strong, and multinomial performance index is stablized constant, not easily aging.
When audio frequency and video for car audio system exports, eliminate the interference of noise, noise and picture; Make your audio-video system quality reach higher leveled level, allow you enjoy more perfectly tonequality and picture effect on the road, there is the feature of low power consumption high efficiency.
Claims (2)
1. DC power step-down transformer circuit, is characterized in that: it comprises
Overpower-protection circuit (1), it is for controlling power supply main control chip U1;
Current foldback circuit (2), it is for controlling triode Q1, and the collector electrode of this triode Q1 is held with the Isense of power supply main control chip U1 by resistance R3 and is connected;
Under-voltage protecting circuit (3), it comprises switching diode VD3, and the negative electrode of switching diode VD3 is held with the Vcc of power supply main control chip U1 and is connected; And
Overvoltage crowbar (4), it comprises resistance R7, resistance R8, electric capacity C9, voltage stabilizing didoe VDz2 and triode thyrister VS1, the minus earth of this triode thyrister VS1, and the anode of this triode thyrister VS1 is connected with the anode of switching diode VD3;
Described control power supply main control chip U1 comprises Isense end, Vcc end, OUT end, COMP end, Vfb end, Vref end, RT/CT end and GND end; The Isense end of described control power supply main control chip U1 is connected with one end of resistance R10 and one end of electric capacity C16, and the other end of electric capacity C16 is connected with one end of resistance R11, and the other end of resistance R10 is connected with the other end of resistance R11; The Vcc end of described control power supply main control chip U1 is connected with the parallel circuits of electric capacity C14 and electrochemical capacitor C15, ground connection after described electric capacity C14 and electrochemical capacitor C15 parallel connection, and the Vcc of described control power supply main control chip U1 holds and is also connected with voltage input end; The OUT end of described control power supply main control chip U1 is connected by one end of an electric capacity C22 and transformer T1 winding, the other end ground connection of this winding, one end of another winding of described transformer T1 is connected with the grid of power MOSFET pipe VT1 by electric capacity C21, and the other end of this another winding is connected with the source electrode of power MOSFET tube VT1 by resistance R6; The COMP end of described control power supply main control chip U1 is connected with resistance R12, holds be connected after described resistance R12 is connected with electric capacity C17 with the Vfb controlling power supply main control chip U1; The Vref end of described control power supply main control chip U1 is connected with the anode of electrochemical capacitor C19 and resistance R13 one end respectively, the minus earth of described electrochemical capacitor C19, and the described resistance R13 other end is connected with electric capacity C18 one end, described electric capacity C18 other end ground connection; The RT/CT end of described control power supply main control chip U1 is connected with the other end of resistance R10 and the other end of resistance R11; The GND of described control power supply main control chip U1 holds ground connection;
The base stage of described triode Q1 is connected with one end of resistance R2; the emitter of described triode Q1 is connected with electric capacity C4, resistance R1a and resistance R1b respectively; between the emitter that described electric capacity C4 is connected to described triode Q1 and base stage; described resistance R1a is connected with the other end of resistance R2 with after resistance R1b parallel connection; described resistance R1a is also connected with the drain electrode of power MOSFET pipe VT1 with after resistance R1b parallel connection, and the source electrode of described power MOSFET pipe VT1 is connected with the anode of the triode thyrister VSI of overvoltage crowbar (4) by load L2, load L3.
2. DC power step-down transformer circuit according to claim 1; it is characterized in that: the resistance R8 in described overvoltage crowbar (4) and electric capacity C9 is connected in parallel; described resistance R8 and electric capacity C9 is connected in parallel rear ground connection; described resistance R8 is connected with the anode of voltage stabilizing didoe VDz2; the negative electrode of described voltage stabilizing didoe VDz2 is connected with one end of resistance R7; the other end of described resistance R7 is connected with the anode of triode thyrister VS1; the gate of described triode thyrister VS1 is connected with electric capacity C9, and the other end of described resistance R7 is also connected with voltage output end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310075292.0A CN103151921B (en) | 2013-03-11 | 2013-03-11 | DC power step-down transformer circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310075292.0A CN103151921B (en) | 2013-03-11 | 2013-03-11 | DC power step-down transformer circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103151921A CN103151921A (en) | 2013-06-12 |
| CN103151921B true CN103151921B (en) | 2015-06-03 |
Family
ID=48549841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310075292.0A Active CN103151921B (en) | 2013-03-11 | 2013-03-11 | DC power step-down transformer circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103151921B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106356963A (en) * | 2016-11-04 | 2017-01-25 | 易事特集团股份有限公司 | soft start circuit |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108528051B (en) * | 2017-03-06 | 2020-09-25 | 珠海天威技术开发有限公司 | Power supply voltage control circuit and working method thereof, consumable chip and working method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6181084B1 (en) * | 1998-09-14 | 2001-01-30 | Eg&G, Inc. | Ballast circuit for high intensity discharge lamps |
| CN101951708A (en) * | 2009-07-10 | 2011-01-19 | 深圳比亚迪微电子有限公司 | Light modulating control circuit, chip and method |
| CN102711307A (en) * | 2011-03-28 | 2012-10-03 | 海洋王照明科技股份有限公司 | Dimmable light-emitting diode (LED) drive circuit and lamp |
| CN203243223U (en) * | 2013-03-11 | 2013-10-16 | 启东市爱普电器有限公司 | DC power step-down transformer circuit |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7649327B2 (en) * | 2006-05-22 | 2010-01-19 | Permlight Products, Inc. | System and method for selectively dimming an LED |
| TWI375380B (en) * | 2008-12-23 | 2012-10-21 | Richtek Technology Corp | Power system with temperature compensation control |
-
2013
- 2013-03-11 CN CN201310075292.0A patent/CN103151921B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6181084B1 (en) * | 1998-09-14 | 2001-01-30 | Eg&G, Inc. | Ballast circuit for high intensity discharge lamps |
| CN101951708A (en) * | 2009-07-10 | 2011-01-19 | 深圳比亚迪微电子有限公司 | Light modulating control circuit, chip and method |
| CN102711307A (en) * | 2011-03-28 | 2012-10-03 | 海洋王照明科技股份有限公司 | Dimmable light-emitting diode (LED) drive circuit and lamp |
| CN203243223U (en) * | 2013-03-11 | 2013-10-16 | 启东市爱普电器有限公司 | DC power step-down transformer circuit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106356963A (en) * | 2016-11-04 | 2017-01-25 | 易事特集团股份有限公司 | soft start circuit |
| CN106356963B (en) * | 2016-11-04 | 2019-04-02 | 易事特集团股份有限公司 | Soft start circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103151921A (en) | 2013-06-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204217167U (en) | Single live wire touches lamp control switch | |
| CN101964586B (en) | Inrush current control | |
| CN104242249A (en) | Protective circuit of switching power supply | |
| CN103151921B (en) | DC power step-down transformer circuit | |
| CN201995169U (en) | Driving power supply of high-power LED (light-emitting diode) street lamp | |
| CN102170232B (en) | Self-driven active buffer and flyback switching mode power supply | |
| CN203243223U (en) | DC power step-down transformer circuit | |
| CN104426377A (en) | Wide-input voltage flyback-type switch power supply applicable to drive of direct-current motor | |
| CN203352471U (en) | Photovoltaic inverter-used single end flyback-type switching power supply primary-side circuit | |
| CN106341922B (en) | LED Emergency Lighting Supplies | |
| CN204595154U (en) | For the IGBT high-voltage switch gear that cable local discharge detects | |
| TW201541827A (en) | Converter circuit with power factor correction | |
| CN106026709A (en) | Light-operated LED switch power supply based on overvoltage and overcurrent protection circuit | |
| CN205792283U (en) | Wide input range small power electric source circuit | |
| CN104009528A (en) | Storage battery charging circuit and charging method thereof | |
| CN102480242A (en) | Push-pull converter and push-pull topology LED drive circuit | |
| CN208862559U (en) | A kind of overvoltage crowbar and wireless charging receiver | |
| CN103825447A (en) | Anti-surge bridgeless power factor correction circuit | |
| CN209299231U (en) | A kind of IGBT isolated drive circuit of belt switch control unit | |
| CN206024173U (en) | LED Emergency Lighting Supplies | |
| CN104968088A (en) | Grid driving system used for LED lamp protection system based on boost voltage stabilizing circuit | |
| TW201731203A (en) | Dual-output power converter | |
| CN204316811U (en) | A kind of raster data model system of logic-based protection amplifying circuit | |
| CN212343657U (en) | Low-cost efficient open-loop bidirectional isolation power supply system | |
| CN204119070U (en) | A kind of switching power circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder |
Address after: No.46 Fukang Road, industrial park, Dazhong street, Dafeng District, Yancheng City, Jiangsu Province Patentee after: QIDONG AIPU ELECTRIC APPLIANCE Co.,Ltd. Address before: 226200, Fuyuan Road 288, Qidong Economic Development Zone, Nantong, Jiangsu Patentee before: QIDONG AIPU ELECTRIC APPLIANCE Co.,Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 226200 No.288 Fuyuan Road, Qidong Economic Development Zone, Nantong City, Jiangsu Province Patentee after: QIDONG AIPU ELECTRIC APPLIANCE Co.,Ltd. Address before: No.46 Fukang Road, industrial park, Dazhong street, Dafeng District, Yancheng City, Jiangsu Province Patentee before: QIDONG AIPU ELECTRIC APPLIANCE Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210129 Address after: No.588 Fuyuan Road, Qidong Economic Development Zone, Nantong City, Jiangsu Province, 226200 Patentee after: AIPU VEHICLE (CHINA) Co.,Ltd. Address before: 226200 No.288 Fuyuan Road, Qidong Economic Development Zone, Nantong City, Jiangsu Province Patentee before: QIDONG AIPU ELECTRIC APPLIANCE Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No.588 Fuyuan Road, Qidong Economic Development Zone, Nantong City, Jiangsu Province, 226200 Patentee after: EPP vehicles Co.,Ltd. Address before: No.588 Fuyuan Road, Qidong Economic Development Zone, Nantong City, Jiangsu Province, 226200 Patentee before: AIPU VEHICLE (CHINA) Co.,Ltd. |