CN205818907U - A kind of Two axle drive system and be configured with the electric automobile of this system - Google Patents
A kind of Two axle drive system and be configured with the electric automobile of this system Download PDFInfo
- Publication number
- CN205818907U CN205818907U CN201620707736.7U CN201620707736U CN205818907U CN 205818907 U CN205818907 U CN 205818907U CN 201620707736 U CN201620707736 U CN 201620707736U CN 205818907 U CN205818907 U CN 205818907U
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- China
- Prior art keywords
- motor
- gear
- clutch
- actuator
- drive system
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Abstract
This utility model relates to automotive power.Aim to provide a kind of Two axle drive system and be configured with the electric automobile of this system, including the first motor, the second motor, also including sun gear, planetary gear, gear ring and planet carrier；Fixed axis gear and driving gear；The motor shaft of the first motor is connected fixing with sun gear；Described fixed axis gear is positioned at gear ring inner with driving gear, and fixed axis gear engages with gear ring and driving gear respectively；Also include the first freewheel clutch controlling ring gear against rotation；Also include that the motor shaft of the second motor is connected by the second freewheel clutch, described second freewheel clutch with sun gear；Also include the combination that the 3rd clutch, described 3rd clutch are the 3rd freewheel clutch or actuator-operated clutch or the 3rd freewheel clutch and actuator-operated clutch.The Two axle drive system that this utility model provides is capable of electric automobile automatic switchover under different operating modes, it is not necessary to is separately provided clutch linkage and controls device.
Description
Technical field
This utility model relates to automotive power, particularly relates to a kind of dual-motor electric automobile-used Two axle drive moment of torsion and turns
Speed automatically or semi-automatically overlapping system and be configured with the electric automobile of this overlapping system.
Background technology
At present, electric motor car has the feature being better than conventional internal combustion rolling stock in many aspects, such as zero-emission, high efficiency, nothing
Need to expend petroleum resources, operate steadily, noise is little.Conventional electrical vehicular power source uses single motor, but at running
Middle discovery, it is not enough that single motor also exists moment of torsion, and during operating, motor speed is too high, affect the technical problems such as electrical machinery life.For this
Technical problem, occurs in that the electric motor car of Dual-motors Driving in the market.Such as application number: 201210024534.9, title: electronic
Automobile and bi-motor thereof couple the control system of speed change gear and this device, disclose a kind of bi-motor and turn round in this patent document
Square and rotating speed stacking apparatus, its technical scheme provided is to include fixed axis gear mechanism, is connected with the first motor, has power defeated
Go out gear；And planetary gears, it is connected with the second motor, including: sun gear, have and be connected too with described second motor
Sun wheel central shaft；Ring gear, is set in outside described sun gear；Multiple planetary gears, are arranged on described sun gear and described internal tooth
Between circle；And planet carrier, connect the plurality of planetary gear, and output power to the rotary shaft of wheel, be characterised by, also wrap
Include linkage control device and torque coupling controls device.Control device by linkage control device and torque coupling and realize each clutch
The clutch switching of device, according to description and the Figure of description 5 of this patent document, linkage control device and torque coupling control
Device processed uses hydraulic control, and structure is complicated, not only adds manufacturing cost, and can cause fault in actual moving process
Rate promotes.According further to the description of description and combine Figure of description 1 and understand, the motor shaft of the first motor and fixed axis gear machine
Structure connects, and the motor shaft of the second motor is connected with sun gear center, and two motor shafts cannot realize coaxial line and install, and this pacifies in engineering
Load onto and can cause bigger difficulty.
Utility model content
The one that aims to provide this utility model can automatically switch each clutch on-off, reaches moment of torsion and rotating speed automatically or half
Automatically the system of superposition and the electric automobile that is configured to, to solve to be separately provided in prior art clutch controller
The technological deficiency that the structure caused is complicated, fault rate is high.
For realizing above-mentioned technical purpose, the technical solution adopted in the utility model is: a kind of Two axle drive system, including the
One motor, the second motor, also include sun gear, planetary gear, gear ring and planet carrier；
Also include fixed axis gear and drive gear；
The motor shaft of described first motor is connected fixing with sun gear；
It is characterized in that: described fixed axis gear with drive gear be positioned at gear ring inner, fixed axis gear respectively with gear ring and
Driving gear engages；
Also include the first freewheel clutch controlling ring gear against rotation；
Also including the second freewheel clutch, described second freewheel clutch is by the motor shaft of the second motor with sun gear even
Connect；
Also include that the 3rd clutch, described 3rd clutch are the 3rd freewheel clutch or actuator-operated clutch or the 3rd surmounts
Clutch and the combination of actuator-operated clutch, described 3rd clutch is by controlled or automatic with driving gear for the motor shaft of the second motor
Clutch, or sun gear is being subject to driving gear in the case of automatic clutch by the motor shaft of the second motor with driving gear
Control clutch；
Rotating forward, the second motor at the first motor are capable of the automatic superposition of moment of torsion when rotating forward, the first motor rotates forward, the
The controlled of rotating speed or automatic superposition it is capable of during two motor reversals.
Further, the motor shaft of described first motor, the motor shaft of the second motor, sun gear axle center, gear shaft
The heart is positioned on same axis.
Further, the described combination that the 3rd clutch is freewheel clutch and actuator-operated clutch, the electricity of the second motor
Arbor is connected by the 3rd freewheel clutch between gear with driving, and is additionally provided with between motor shaft and the driving gear of the second motor
Actuator-operated clutch, it is achieved vehicle advance time moment of torsion superpose with the automatic of rotating speed, by the reversion of the first motor, the second motor anti-
Turn and realize car-backing function.
Further, the 3rd described clutch is actuator-operated clutch, and the motor shaft of the second motor passes through actuator-operated clutch
Is connected with driving gear, rotates forward at the first motor, the second motor realizes the automatic superposition of moment of torsion when rotating forward, the first motor rotating forward,
Second motor reversal realizes the controlled superposed of rotating speed, and the first motor reversal, the second motor reversal realize car-backing function.
Further, the 3rd clutch is the combination of freewheel clutch and actuator-operated clutch, wherein the motor of the second motor
Axle is connected by freewheel clutch between gear with driving, and drives and is connected by actuator-operated clutch between gear and sun gear,
First motor rotating forward, the second motor realize the automatic superposition of moment of torsion when rotating forward, the first motor rotates forward, the second motor reversal realizes turning
The automatic superposition of speed, the first motor reversal realizes car-backing function.
Further, the installation site of described first freewheel clutch can directly control the rotation of gear ring, it is also possible to logical
Cross and control fixed axis gear or drive the rotation of gear to reach to control the purpose of ring gear against rotation.
Further, when fixed carrier, the first motor → sun gear → planetary gear → gear ring → fixed axis gear → drive
The gear ratio of moving gear is more than 1.
This utility model additionally provides a kind of electric automobile, including the first motor and the second motor, the first motor, the second electricity
Machine uses aforesaid Two axle drive system to install.
The Two axle drive moment of torsion overlapping system automatic from rotating speed that this utility model provides is capable of electric automobile different
Automatic switchover under operating mode, it is not necessary to be separately provided clutch linkage and control device, as long as just controlling the rotating of the second motor
Torque couple, rotating speed coupling can be realized and fix the mode of operations such as no-load voltage ratio, reducing manufacturing cost, it is ensured that stably may be used of vehicle
By running.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of this Two axle drive system first embodiment.
Accompanying drawing 2 is the structural representation of this Two axle drive system the second embodiment.
Accompanying drawing 3 is the structural representation of this Two axle drive system the 3rd embodiment.
Accompanying drawing 4 be in this Two axle drive system the first freewheel clutch shift one's position install a kind of structural representation.
Accompanying drawing 5 be in this Two axle drive system the first freewheel clutch shift one's position install another kind of structural representation.
Accompanying drawing 6 is the structural representation of this Two axle drive system the 4th embodiment.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment describes this utility model in detail.
About first motor the 1, second motor 2, gear ring 5 and the rotating forward of each gear, the definition of reversion: by first in accompanying drawing 1
Motor 1 direction is observed to the right, and described just transfers to rotationally clockwise, and described is reversed to rotate in an anti-clockwise direction.
In each embodiment below, the 3rd freewheel clutch 73 being used alone that the 3rd clutch is defined as in each accompanying drawing
Or being applied in combination of the actuator-operated clutch 74 that is used alone or the 3rd freewheel clutch 73 and actuator-operated clutch 74, about the 3rd from
The specifically used of clutch will be described in more detail in embodiments.
Embodiment 1
As shown in Figure 1, this Two axle drive moment of torsion and the automatic overlapping system of rotating speed, including first motor the 1, second motor 2,
Also including sun gear 3, planetary gear 4, gear ring 5 and planet carrier 6, after operating, power is delivered to differential mechanism (accompanying drawing by planet carrier 6 output
Not shown in).
As shown in Figure 1, also include controlling the first freewheel clutch 71 that gear ring 5 rotates, the electricity of the first described motor
Arbor 11 is connected with sun gear 3, and the motor shaft 21 of the second described motor is by the second freewheel clutch 72 with sun gear 3 even
Connect.
As shown in Figure 1, also include fixed axis gear 81, drive gear 82, fixed axis gear 81 respectively with drive gear 82 and
Gear ring 5 engages.In the present embodiment, the 3rd clutch is the 3rd freewheel clutch 73 being used alone, as shown in Figure 1, the
The motor shaft 21 of two motors 2 is connected with driving gear 82 by the 3rd freewheel clutch 73.
During making, gear ring is widened, and sun gear 3, planetary gear 4 are positioned at the side of gear ring, fixed axis gear 81 and driving gear
82 opposite sides being positioned at gear ring inner, the motor shaft 21 of motor shaft 11, second motor of the first motor is positioned at the two of sun gear 3
Side.For convenience of installation during engineering construction, whole system is made to become compacter, in the present embodiment, the motor shaft of the first motor
11, motor shaft 21 and sun gear 3 axle center of the second motor is positioned on same axis.
As shown in Figure 1, first freewheel clutch the 71, second freewheel clutch 72 can only one direction turn according to Impact direction
Dynamic, the first freewheel clutch 71 limits gear ring 5 can only rotationally clockwise, i.e. gear ring 5 can only rotate forward.Below by various works
The explanation that runs of condition describes the operating state of each clutch.
Below for the train shown in accompanying drawing 1, various operating modes are described further.
Operating mode 1
Little moment of torsion list motor works.
When vehicle is under normal transport condition, when torque value is less than preset value, the first motor 1 works, the second motor 2 not work
Make.As shown in Figure 1, the first motor 1 rotates forward, and the motor shaft 11 of the first motor drives sun gear 3 to rotate forward, the second freewheel clutch
72 are in released state, and the 3rd clutch is the 3rd freewheel clutch 73 being used alone, the motor shaft 21 of the second motor with drive
Moving gear 82 is connected by the 3rd freewheel clutch 73, and now the 3rd freewheel clutch 73 separates, the motor shaft 21 of the second motor
Remain static, the first motor 1 drive sun gear 3 rotate forward → planetary gear 4 inverts → gear ring 5 have reversal trend → the first from
Clutch 71 combination is fixed gear ring 5 → power and is exported by planet carrier 6.
Operating mode 2
High pulling torque bi-motor works.
When vehicle in climbing or quickly gives it the gun under state, and torque value is more than preset value, as shown in Figure 1, first
Motor rotates forward, and the motor shaft 11 of the first motor drives sun gear 3 to rotate forward, and gear ring 5 has reversal trend, and the first freewheel clutch 71 is tied
Close and gear ring 5 is fixed.Second motor rotates forward, and the 3rd freewheel clutch 73 is in released state, and controlling the second motor speed has super
The more trend of the first motor speed, the second freewheel clutch 72 combines, and the power of the second motor 2 is transferred to sun gear 3 and achieves
The automatic superposition of moment of torsion, the power after superposition exports through planet carrier 6, reaches the effect of moment of torsion superposition.
Operating mode 3
Vehicle under running status accelerates.
When vehicle carries out to be accelerated motion under normal transport condition, the first motor 1 rotates forward, and the second motor 2 inverts.As
Shown in accompanying drawing 1, the second motor 2 is when reversion, and the second freewheel clutch 72 is in released state, and the 3rd freewheel clutch 73 is tied
Close, the second motor 2 drive drive gear 82 invert → fixed axis gear 81 rotates forward → gear ring 5 rotates forward → planetary gear rotates forward, thus real
Show the superposition of planet carrier 6 rotating speed, reach the purpose that vehicle accelerates.
As seen from the above description, use this moment of torsion and the automatic overlapping system of rotating speed, in the case of the first motor rotates forward only
The rotating of the second motor need to be controlled can realize moment of torsion and superpose with the automatic of rotating speed, it is possible to effectively solve prior art needs
Being separately provided the technical problem of clutch controller, the operation making vehicle is more reliable and more stable, reduces vehicle operation
In rate of breakdown.The motor shaft of the first motor and the motor shaft of the second motor are arranged on the both sides of sun gear and protect simultaneously
Hold and make whole system compacter at same axis, be also beneficial to the installation on vehicle rear axle of this system.
This system can be widely applied on the electric automobile of Dual-motors Driving, in the present embodiment, it is provided that a kind of bi-motor
The electric automobile driven, it includes the first motor, the second motor, and the first motor, the second motor are according to aforesaid moment of torsion and rotating speed
Automatically overlapping system is installed.
Embodiment 2
The moment of torsion that the present embodiment provides and the automatic overlapping system of rotating speed are increase car-backing functions on the basis of embodiment 1.
As shown in Figure 2, providing the 3rd clutch in the present embodiment is the 3rd freewheel clutch 73 and actuator-operated clutch 74
Be applied in combination, at the motor shaft 21 of the second motor and drive and increase controllable clutch between gear 82 on the basis of embodiment 1
Device 74, this preferred electromagnetic clutch of clutch 74.
With reference to the accompanying drawings shown in 1, when the first motor 1 inverts, cause the action of two lines, the first route: second surmount from
Clutch 72 combines → and the motor shaft 21 of the second motor inverts → and the 3rd freewheel clutch 73 combines → drives the synchronized reversion of gear 82.
Second route: sun gear 3 inverts → planetary gear 4 rotates forward → gear ring 5 rotates forward → and the first freewheel clutch 71 separates →
Fixed axis gear 81 rotates forward → and 82 drive gears 82 to invert.
The result of above two route is: due to the factor of gear ratio, if the first motor speed is 1000r/s, when solid
When determining planet carrier, what the second route caused drives the rotating speed of gear 82 more than 1000 r/s, thus causes the 3rd freewheel clutch
73 separate, and drive gear 82 to separate with the motor shaft of the second motor, drive the unloaded reversion of gear 82, cause planet carrier unpowered defeated
Go out.
As shown in Figure 2, after increasing controllable clutch 74, during reversing, the controlled combination of controllable clutch 74, the second motor 2
The rotating speed of the second motor 2 is also fixed as the rotating speed consistent with the first motor 1 by reversion, and such as 1000r/s, the second motor causes driving
The rotating speed of gear 82 is 1000r/s, is transferred to planetary gear 4 by gear ring 5, and the first motor 1 is also transmitted to planet by sun gear 3
Wheel 4, by differential, drives planet carrier reversion to realize car-backing function.
When stating car-backing function in realization, it is desirable to when fixed carrier, the first motor → sun gear → planetary gear → tooth
The gear ratio of circle → fixed axis gear → driving gear is more than 1.
As shown in accompanying drawing 2, accompanying drawing 4 and accompanying drawing 5, the position of the first freewheel clutch 71 can change flexibly, shown in accompanying drawing 2
The installation site of the first freewheel clutch 71 realizes directly controlling gear ring 5, and the first freewheel clutch 71 shown in accompanying drawing 4 is used
In the one-directional rotation of control fixed axis gear 81, the first freewheel clutch 71 shown in accompanying drawing 5 is for controlling to drive the list of gear 82
To control, its final effect is all the one-directional rotation controlling gear ring 5.The concrete installation site of the first freewheel clutch 71 according to
Actual installation environment is determined.
Embodiment 3
As shown in Figure 3, this train is as a kind of change gained of embodiment 2.
As shown in Figure 3, in this train, the 3rd clutch is the actuator-operated clutch 74 being used alone, actuator-operated clutch
The motor shaft 21 of the second motor is connected by 74 with driving gear 82, eliminates the 3rd freewheel clutch in embodiment 2.
With reference to the accompanying drawings shown in 3, during moment of torsion superposition, controlling the rotating speed of the second motor 2 has and surmounts becoming of the first motor 1 rotating speed
Gesture, the second freewheel clutch 72 combines automatically, and actuator-operated clutch 74 separates, it is achieved the automatic superposition of moment of torsion.During rotating speed superposition, control
Making the second motor 2 to invert, the second freewheel clutch 72 separates, the controlled combination of actuator-operated clutch 74, it is achieved the controlled superposed of rotating speed,
Reach moment of torsion and the automatic and semi-automatic Overlay of rotating speed.
During reversing, the controlled combination of actuator-operated clutch 74, the first motor 1 inverts, and the second freewheel clutch 72 combines, the second electricity
Machine 2 inverts and the rotating speed of the second motor 2 is fixed as the rotating speed consistent with the first motor 1, such as 1000r/s, drives gear 82
Rotating speed is 1000r/s, is transferred to planetary gear 4 by gear ring 5, and the first motor 1 is also transmitted to planetary gear 4 by sun gear 3, passes through
Differential, drives planet carrier reversion to realize car-backing function.
In like manner, when stating car-backing function in realization, it is desirable to when fixed carrier, the first motor → sun gear → planetary gear
The gear ratio of → gear ring → fixed axis gear → driving gear is more than 1.
Embodiment 4
As shown in Figure 6, this train is as the another kind of change gained of embodiment 2.
As shown in Figure 6, in this train, the 3rd clutch is the group of the 3rd freewheel clutch 73 and actuator-operated clutch 74
Closing and use, the motor shaft of the second motor is connected by the 3rd freewheel clutch 73 with driving gear 82, and actuator-operated clutch 74 will drive
Gear 82 is connected with sun gear 3.
With reference to the accompanying drawings shown in 6, during moment of torsion superposition, controlling the rotating speed of the second motor 2 has and surmounts becoming of the first motor 1 rotating speed
Gesture, the second freewheel clutch 72 combines automatically, and actuator-operated clutch 74 separates, it is achieved the automatic superposition of moment of torsion.During rotating speed superposition, control
Making the second motor 2 to invert, the second freewheel clutch 72 separates, and the 3rd freewheel clutch 73 combines automatically, and the second motor 2 drives and drives
Moving gear 82 inverts → and fixed axis gear 81 rotates forward → gear ring 5 rotates forward → and planetary gear rotates forward, it is achieved thereby that planet carrier 6 rotating speed is folded
Add, reach the purpose that vehicle accelerates.
During reversing, the controlled combination of controllable clutch 74, the first motor 1 inverts, and sun gear 3 drives and drives gear 82 synchronized instead
Turn.Owing to the gear ratio of the first motor → sun gear → planetary gear → gear ring → fixed axis gear → driving gear is more than 1, by difference
Speed, drives planet carrier reversion to realize car-backing function, and now, the second freewheel clutch 72 combines, and drives the second motor 2 the most empty
Turn.
This utility model additionally provides the electric automobile of a kind of Dual-motors Driving, and it includes the first motor, the second motor, the
The moment of torsion that one motor, the second motor are provided by any of the above-described embodiment is installed with rotating speed overlapping system.
Claims (8)
1. a Two axle drive system, including the first motor, the second motor, also includes sun gear, planetary gear, gear ring and planet
Frame；
Also include fixed axis gear and drive gear；
The motor shaft of described first motor is connected fixing with sun gear；
It is characterized in that: described fixed axis gear with drive gear be positioned at gear ring inner, fixed axis gear respectively with gear ring and driving
Gear engages；
Also include the first freewheel clutch controlling ring gear against rotation；
Also include that the motor shaft of the second motor is connected by the second freewheel clutch, described second freewheel clutch with sun gear；
Also include that the 3rd clutch, described 3rd clutch are the 3rd freewheel clutch or actuator-operated clutch or the 3rd overdrive clutch
The combination of device and actuator-operated clutch, described 3rd clutch by the motor shaft of the second motor with drive gear controlled or automatically from
Close, or by the motor shaft of the second motor with drive gear in the case of automatic clutch by sun gear with driving gear controlled
Clutch；
Be capable of the automatic superposition of moment of torsion when rotating forward, the second motor rotating forward of the first motor, the first motor rotates forward, the second electricity
It is capable of the controlled of rotating speed or automatic superposition during machine reversion.
A kind of Two axle drive system the most according to claim 1, it is characterised in that: the motor shaft of described first motor, the
The motor shaft of two motors, sun gear axle center, the gear shaft heart are positioned on same axis.
A kind of Two axle drive system the most according to claim 1, it is characterised in that: the 3rd described clutch for surmount from
Clutch and the combination of actuator-operated clutch, be connected by the 3rd freewheel clutch between the motor shaft of the second motor with driving gear,
The motor shaft of the second motor and drive and be additionally provided with actuator-operated clutch between gear, it is achieved when vehicle advances, moment of torsion and rotating speed is automatic
Superposition, realizes car-backing function by the reversion of the first motor, the reversion of the second motor.
A kind of Two axle drive system the most according to claim 1, it is characterised in that: the 3rd described clutch be controlled from
Clutch, the motor shaft of the second motor is connected with driving gear by actuator-operated clutch, rotates forward at the first motor rotating forward, the second motor
The automatic superposition of Shi Shixian moment of torsion, the first motor rotates forward, the second motor reversal realizes the controlled superposed of rotating speed, and the first motor is anti-
Turn, the second motor reversal realizes car-backing function.
A kind of Two axle drive system the most according to claim 1, it is characterised in that: the 3rd clutch be freewheel clutch with
The combination of actuator-operated clutch, wherein the motor shaft of the second motor is connected by freewheel clutch between gear with driving, and drives tooth
Wheel is connected by actuator-operated clutch with between sun gear, realizes the automatic of moment of torsion at the first motor rotating forward, the second motor when rotating forward
Superposition, the first motor rotates forward, the second motor reversal realizes the automatic superposition of rotating speed, and the first motor reversal realizes car-backing function.
A kind of Two axle drive system the most according to claim 1, it is characterised in that: the installation of described first freewheel clutch
Position can directly control the rotation of gear ring, it is also possible to by controlling fixed axis gear or driving the rotation of gear to reach to control gear ring
The purpose rotated.
7. according to a kind of Two axle drive system described in claim 3,4 or 5, it is characterised in that: when fixed carrier, first
The gear ratio of motor → sun gear → planetary gear → gear ring → fixed axis gear → driving gear is more than 1.
8. an electric automobile, including the first motor and the second motor, the first motor, the second motor use in claim 1-7
The Two axle drive system described in any one install.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620707736.7U CN205818907U (en) | 2016-07-07 | 2016-07-07 | A kind of Two axle drive system and be configured with the electric automobile of this system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620707736.7U CN205818907U (en) | 2016-07-07 | 2016-07-07 | A kind of Two axle drive system and be configured with the electric automobile of this system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205818907U true CN205818907U (en) | 2016-12-21 |
Family
ID=57564152
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620707736.7U Withdrawn - After Issue CN205818907U (en) | 2016-07-07 | 2016-07-07 | A kind of Two axle drive system and be configured with the electric automobile of this system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205818907U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106004398A (en) * | 2016-07-07 | 2016-10-12 | 张永峰 | Two-axle driving torque and revolving speed automatic or semi-automatic overlay system and electric automobile provided with overlay system |
| CN113910895A (en) * | 2021-10-20 | 2022-01-11 | 宋志全 | New energy automobile speed change system |
-
2016
- 2016-07-07 CN CN201620707736.7U patent/CN205818907U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106004398A (en) * | 2016-07-07 | 2016-10-12 | 张永峰 | Two-axle driving torque and revolving speed automatic or semi-automatic overlay system and electric automobile provided with overlay system |
| CN113910895A (en) * | 2021-10-20 | 2022-01-11 | 宋志全 | New energy automobile speed change system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20161221 Effective date of abandoning: 20180323 |
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| AV01 | Patent right actively abandoned |