CN112455543A - Battery package is bumping protective structure and car - Google Patents
Battery package is bumping protective structure and car Download PDFInfo
- Publication number
- CN112455543A CN112455543A CN201910839675.8A CN201910839675A CN112455543A CN 112455543 A CN112455543 A CN 112455543A CN 201910839675 A CN201910839675 A CN 201910839675A CN 112455543 A CN112455543 A CN 112455543A
- Authority
- CN
- China
- Prior art keywords
- collision
- head
- guide bracket
- battery pack
- guide
- 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
- 230000001681 protective effect Effects 0.000 title claims description 12
- 230000002265 prevention Effects 0.000 claims description 12
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000003116 impacting effect Effects 0.000 claims description 2
- 238000009434 installation Methods 0.000 claims description 2
- 230000007547 defect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011796 hollow space material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/02—Understructures, i.e. chassis frame on which a vehicle body may be mounted comprising longitudinally or transversely arranged frame members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D21/00—Understructures, i.e. chassis frame on which a vehicle body may be mounted
- B62D21/09—Means for mounting load bearing surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
- B60K2001/0405—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion characterised by their position
- B60K2001/0438—Arrangement under the floor
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Body Structure For Vehicles (AREA)
Abstract
The invention provides a battery pack frontal collision protection structure and an automobile, wherein the battery pack frontal collision protection structure comprises a front longitudinal beam rear section, an auxiliary frame and a battery pack storage space, and the auxiliary frame and the battery pack storage space are positioned on the same side of the front longitudinal beam rear section; the sub vehicle frame with be equipped with between the battery package storage space and just bumping guide bracket, just bumping guide bracket and fixing front longitudinal back end, just bumping guide bracket and including the spigot surface, the spigot surface is used for the sub vehicle frame receives after the collision will the sub vehicle frame direction is predetermine the direction. The invention overcomes the defect that the battery container is easy to be invaded by the auxiliary frame when the vehicle collides by arranging the direct collision guide bracket with the guide function.
Description
Technical Field
This description relates to car technical field, especially relates to a battery package is bumping protective structure and car.
Background
With the development of the times and the progress of the professional technologies of automobiles, the industry of pure electric automobiles is developed vigorously, and the electric automobiles are rapidly popularized nowadays; meanwhile, the design difficulty of the pure electric vehicle is increased more and more. For pure electric vehicles, battery pack protection is a significant problem.
Laws and regulations also put high demands on the collision protection capability of pure electric vehicles. The vehicle body framework is required to withstand impact collision at a certain speed, and a battery pack is protected so as to prevent short circuit and fire caused by impact deformation of the auxiliary frame. The method is difficult to be qualified in the collision safety requirement of the new energy vehicle.
Therefore, how to fully utilize the vehicle body framework with limited space and keep the strong collision resistance of the vehicle body framework to protect the battery pack is a difficult point for developing the vehicle body of the pure electric vehicle.
Disclosure of Invention
The specification provides a battery pack head-on collision protection structure and an automobile, and aims to overcome the defects in the related art.
According to a first aspect of embodiments herein, a battery pack head-on collision prevention structure includes: the battery pack storage space is arranged on the same side of the rear section of the front longitudinal beam; the sub vehicle frame with be equipped with between the battery package storage space and just bumping guide bracket, just bumping guide bracket and fixing front longitudinal back end, just bumping guide bracket and including the spigot surface, the spigot surface is used for the sub vehicle frame receives after the collision will the sub vehicle frame direction is predetermine the direction.
Preferably, the guide surface of the frontal collision guide bracket is a downward inclined plane, the guide surface faces the subframe, and the subframe collides with the guide surface and is at least partially guided to a direction away from the rear section of the front longitudinal beam.
Preferably, the periphery of the cross section of the frontal collision guide bracket is trapezoidal.
Preferably, the guide surface of the frontal collision guide bracket is a convex curved surface, the guide surface faces the subframe, and the subframe collides with the guide surface and is at least partially guided to a direction away from the rear section of the front longitudinal beam.
Preferably, the periphery of the cross section of the frontal collision guide support is semicircular.
Preferably, the head-on collision guide support is hollow inside, and a reinforcing rib is arranged in the hollow.
Preferably, the head-on collision guide bracket is provided with a mounting hole penetrating through the head-on collision guide bracket.
Preferably, a threaded pipe can be installed in the mounting hole, and the threaded pipe is matched with a bolt to fix the frontal collision guide bracket on the rear section of the front longitudinal beam.
Preferably, the protective structure is being collided with to the battery package still includes the protective cradle that collides with, the protective cradle that collides with is located of sub vehicle frame keep away from one side of just leading truck, perhaps the protective cradle that collides with the integrative setting of just colliding with leading truck.
According to a second aspect of the embodiments of the present specification, there is provided an automobile including the battery pack head-on collision protection structure described above.
The battery pack direct impact protection structure provided by the specification overcomes the defect that a battery pack is easy to be invaded by an auxiliary frame when a vehicle collides by arranging the direct impact guide support with a guide function.
Drawings
Fig. 1 is a schematic diagram of a positional relationship between a rear section of a front side member and a sub-frame and a battery pack in the prior art.
Fig. 2 is a schematic diagram illustrating a battery pack head-on collision prevention structure according to an exemplary embodiment of the present disclosure.
Fig. 3 is a schematic view of a battery pack head-on collision prevention structure according to another exemplary embodiment of the present disclosure.
Fig. 4 is a schematic view of the structure of the head-on guide bracket of fig. 3.
The anti-collision protective device comprises a battery pack 1, an auxiliary frame 2, a front longitudinal beam rear section 3, an anti-collision protective support 4, frontal collision guide supports 5 and 7, a screwed pipe 6, a bolt 8, a reinforcing rib 9, a bottom edge 10 and a battery pack storage space 11.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present specification. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the specification, as detailed in the appended claims.
Fig. 1 is a schematic diagram of a positional relationship between a rear section of a front side member and a sub-frame and a battery pack in the prior art. As shown in fig. 1, when the vehicle is subjected to a strong frontal collision, the sub-frame moves to the left by the impact force, and the battery pack is located in the battery pack storage space, and collides with the sub-frame in the displacement trajectory of the sub-frame. Specifically, the sub-frame moves along the direction in the figure under the action of force and directly impacts the battery pack, and the battery pack impacts to cause short circuit and fire. This is unacceptable in the new energy vehicle crash safety requirements.
Based on the above, this specification provides a battery package is bumping protective structure for solving above-mentioned technical problem.
Fig. 2 is a schematic diagram illustrating a battery pack head-on collision prevention structure according to an exemplary embodiment of the present disclosure. As shown in fig. 2, the battery pack head-on collision prevention structure includes: front longitudinal back end 3, sub vehicle frame 2, just bumping guide bracket 5 and battery package storage space 11. The battery pack 1 is stored in the battery pack storage space 11 in a fixed mode, and the available space of a vehicle body framework is limited, so that the change of the relative positions of the front longitudinal beam rear section 3, the auxiliary frame 2 and the battery pack storage space 11 is not easy to realize, and the technical problem that the auxiliary frame 2 collides with the battery pack 1 needs to be solved on the premise that the relative positions of the front longitudinal beam rear section 3, the auxiliary frame 2 and the battery pack storage space are changed.
Referring to fig. 2, the auxiliary frame 2 and the battery pack storage space 11 are located on the same side of the front longitudinal beam rear section 3, i.e., below the front longitudinal beam rear section 3. Sub vehicle frame 2 with be equipped with between the battery package parking space 11 and just bumping guide bracket 5, just bumping guide bracket 5 and fixing the bottom of front longitudinal back end 3.
Specifically, the entire head-on guide bracket 5 is a trapezoidal body having a certain length, and the periphery of the cross section is trapezoidal. The trapezoidal shape facilitates fixing and guiding of the subframe 2. For weight reduction, just bumping guide bracket 5's inside cavity, and being equipped with strengthening rib 9 in the cavity for strengthen the guide ability, prevent just bumping guide bracket 5 not enough guide ability that loses of intensity.
The frontal collision guide bracket 5 includes a guide surface (F1 direction side) for guiding the sub frame 2 in a predetermined direction after the sub frame 2 is collided. In this embodiment, the predetermined direction is a direction along the guide surface, and in the illustration, the direction F1 is a direction toward the predetermined direction. While the opposite side of the guide surface is a vertical plane, but could of course also be a bevel.
In this embodiment, the guide surface of the frontal collision guide bracket 5 is a flat surface of a trapezoidal body, and is inclined downward, and the guide surface faces the subframe 2 and is spaced apart from the subframe 2. When the sub-frame 2 hits the obliquely downward guide surface, it is guided to move in the direction F1 shown in fig. 2, thereby avoiding the battery pack 1. After the subframe 2 is collided, the end part of the subframe firstly contacts with the frontal collision guide bracket 5, and partial guide displacement occurs, and the rest part of the subframe 2 can be correspondingly displaced. The technical effect is that the auxiliary frame 2 can be guided to the direction away from the front longitudinal beam rear section 3, namely the direction avoiding the battery pack 1, in the displacement process.
Furthermore, in order to better fix the frontal collision guide bracket 5, so that the frontal collision guide bracket 5 does not lose the guiding capability after being collided by the auxiliary frame 2, a powerful fixing measure should be adopted. In the present embodiment, the frontal collision guide bracket 5 is fixed below the front side member rear section 3 by means of a bolt 8 engaged with the threaded pipe 6.
And the direct collision guide support 5 is provided with a mounting hole penetrating through the direct collision guide support 5. And (3) putting the threaded pipe 6 into the mounting hole of the head-on collision guide support 5, screwing the bolt 8 into the threaded pipe 6, and fixing the tail end of the bolt 8 on the front longitudinal beam rear section 3 by using a nut after the tail end of the bolt 8 passes through the mounting hole of the front longitudinal beam rear section 3. The bottom of the threaded pipe 6 can press the bottom of the frontal collision guide bracket 5 on the bottom side of the front longitudinal beam rear section 3, and the combined action of the threaded pipe 6, the bolt 8 and the reinforcing rib 9 can also enhance the impact resistance of the frontal collision guide bracket 5.
In addition, the sub vehicle frame 2 is kept away from one side of positive guide bracket still is equipped with and prevents colliding with protection support 4, prevents the protection of colliding with of ground foreign matter and whole car minimum (battery package 1). The frontal collision guide support 5 and the collision-prevention protection support 4 are respectively provided with a size capable of reducing the size of each part and reducing the weight cost of the parts. Or the anti-collision protection bracket 4 and the frontal collision guide bracket 5 are integrally arranged.
The specification also provides another battery pack head-on collision protection structure, which is different from the embodiment in that the structure of the head-on collision guide bracket is changed. As shown in fig. 3, fig. 3 is a schematic view of a battery pack head-on collision protection structure according to another exemplary embodiment of the present disclosure. The battery package is bumping protective structure includes: front longitudinal back end 3, sub vehicle frame 2, just bumping guide bracket 7 and battery package storage space 11.
Just bumping guide bracket 7 and fixing front longitudinal back end 3, just bumping guide bracket 7 and including the spigot surface, the spigot surface is used for sub vehicle frame 2 receives after the collision will sub vehicle frame 2 direction is predetermine the direction.
The direct-collision guide support 7 is a semicircular body with a certain length, and the guide surface of the direct-collision guide support is a convex curved surface, namely an outer surface. The periphery of the cross section of the direct collision guide support 7 is in a closed semicircular shape, the interior of the direct collision guide support 7 is hollow, and a reinforcing rib 9 is arranged in the hollow interior to increase the strength of the direct collision guide support 7. The guide surface faces the subframe 2, the subframe 2 is at least partially guided away from the front-side-member rear section 3 after impacting the guide surface in the direction of F2; for details, reference may be made to the description in the above embodiments, which are not repeated.
As shown in fig. 4, a threaded pipe 6 can be installed in the installation hole of the frontal collision guide bracket 7, and the threaded pipe 6 is internally matched with a bolt 8 to fix the frontal collision guide bracket 7 to the front longitudinal beam rear section 3.
Specifically, the direct-collision guide support 7 of the semicircular body comprises a body, wherein a reinforcing rib 9 is arranged in the body, the reinforcing rib 9 is transversely arranged in a hollow space in the body and is parallel to a bottom edge 10 of the body, and the hollow part is divided into an upper layer and a lower layer. Two mounting holes are formed in the two end portions of the body and penetrate through the body. The mounting hole at the bottom edge 10 is slightly smaller, when the screwed pipe 6 is mounted, the screwed pipe 6 is placed in from the upper part of the frontal collision guide support 7, the bottom edge 10 is arranged, and after the screwed pipe 6 is connected with the screwed pipe 8 by using the bolt 8, the tail part of the bolt 8 can pass through the bottom edge 10 and be fixed with the front longitudinal beam rear section 3 by using a nut. The use of a threaded pipe 6 makes the bolt 8 connection more reliable.
Furthermore, one side of the auxiliary frame 2, which is far away from the front guide support, is also provided with a collision prevention protection support 4.
In this embodiment, the semicircular cross-sectional structure can better utilize the tangential direction of the normal line of the circle to guide the backward moving direction of the subframe 2 downward, thereby better protecting the battery pack 1.
In addition, the employed frontal collision guide support 7 (semicircular in cross section) is lower in height than the frontal collision guide support 5 (trapezoidal in cross section) shown in fig. 2, which can save more cost and weight of parts.
The present specification also provides an automobile including the battery pack head-on collision prevention structure shown in fig. 2 or the battery pack head-on collision prevention structure shown in fig. 3.
The above description is only a preferred embodiment of the present disclosure, and should not be taken as limiting the present disclosure, and any modifications, equivalents, improvements, etc. made within the spirit and principle of the present disclosure should be included in the scope of the present disclosure.
Claims (10)
1. The utility model provides a battery package is bumping protective structure which characterized in that includes: the battery pack storage space is arranged on the same side of the rear section of the front longitudinal beam; the sub vehicle frame with be equipped with between the battery package storage space and just bumping guide bracket, just bumping guide bracket and fixing front longitudinal back end, just bumping guide bracket and including the spigot surface, the spigot surface is used for the sub vehicle frame receives after the collision will the sub vehicle frame direction is predetermine the direction.
2. The battery pack head-on collision protection structure according to claim 1, wherein the guide surface of the head-on collision guide bracket is a downward inclined plane, the guide surface faces the sub-frame, and the sub-frame is at least partially guided away from the rear section of the front side member after colliding with the guide surface.
3. The head-on collision protection structure for battery packs according to claim 1 or 2, wherein the periphery of the cross section of the head-on collision guide bracket is trapezoidal.
4. The battery pack head-on collision protection structure according to claim 1, wherein the guide surface of the head-on collision guide bracket is a convex curved surface, the guide surface faces the subframe, and the subframe is at least partially guided away from the rear section of the front side member after impacting the guide surface.
5. The head-on collision protection structure for battery packs according to claim 1 or 4, wherein the periphery of the cross section of the head-on collision guide bracket is semicircular.
6. The battery pack head-on collision protection structure according to claim 1, wherein the head-on collision guide bracket is hollow inside, and reinforcing ribs are provided in the hollow.
7. The battery pack head-on collision protection structure according to claim 1, wherein the head-on collision guide bracket is provided with a mounting hole penetrating through the head-on collision guide bracket.
8. The battery pack head-on collision protection structure according to claim 7, wherein a threaded pipe is installed in the installation hole, and the threaded pipe is engaged with a bolt to fix the head-on collision guide bracket to the rear section of the front longitudinal beam.
9. The battery pack head-on collision protection structure according to claim 1, further comprising a collision prevention protection bracket, wherein the collision prevention protection bracket is disposed on one side of the sub-frame away from the head-on guide bracket, or the collision prevention protection bracket and the head-on collision guide bracket are integrally disposed.
10. An automobile comprising the battery pack head-on collision prevention structure according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910839675.8A CN112455543A (en) | 2019-09-06 | 2019-09-06 | Battery package is bumping protective structure and car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910839675.8A CN112455543A (en) | 2019-09-06 | 2019-09-06 | Battery package is bumping protective structure and car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112455543A true CN112455543A (en) | 2021-03-09 |
Family
ID=74806762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910839675.8A Pending CN112455543A (en) | 2019-09-06 | 2019-09-06 | Battery package is bumping protective structure and car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112455543A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013129384A (en) * | 2011-12-22 | 2013-07-04 | Mazda Motor Corp | Front subframe structure of vehicle |
| CN105164002A (en) * | 2013-06-20 | 2015-12-16 | 丰田自动车株式会社 | Vehicle lower portion structure |
| CN207826149U (en) * | 2018-01-30 | 2018-09-07 | 北京车和家信息技术有限公司 | Vehicle protection device, vehicle subframe and vehicle |
| CN109204526A (en) * | 2017-06-30 | 2019-01-15 | 比亚迪股份有限公司 | Body structure and vehicle |
| CN209112268U (en) * | 2018-08-28 | 2019-07-16 | 阿尔特汽车技术股份有限公司 | A kind of structure for preventing fore sub frame from encountering battery pack during head-on crash |
-
2019
- 2019-09-06 CN CN201910839675.8A patent/CN112455543A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013129384A (en) * | 2011-12-22 | 2013-07-04 | Mazda Motor Corp | Front subframe structure of vehicle |
| CN105164002A (en) * | 2013-06-20 | 2015-12-16 | 丰田自动车株式会社 | Vehicle lower portion structure |
| CN109204526A (en) * | 2017-06-30 | 2019-01-15 | 比亚迪股份有限公司 | Body structure and vehicle |
| CN207826149U (en) * | 2018-01-30 | 2018-09-07 | 北京车和家信息技术有限公司 | Vehicle protection device, vehicle subframe and vehicle |
| CN209112268U (en) * | 2018-08-28 | 2019-07-16 | 阿尔特汽车技术股份有限公司 | A kind of structure for preventing fore sub frame from encountering battery pack during head-on crash |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4615830B2 (en) | Impact reduction front bumper device for vehicles | |
| KR20140030763A (en) | Impact absorbing device for vehicle | |
| CN205706563U (en) | A kind of aluminum front anti-collision beam structure | |
| CN211731294U (en) | Preceding crashproof roof beam assembly and have its vehicle | |
| CN209719505U (en) | A kind of anti-collision beam energy absorbing box | |
| CN111137233B (en) | Preceding crashproof roof beam assembly and car | |
| CN112455543A (en) | Battery package is bumping protective structure and car | |
| CN207449828U (en) | Front anti-collision beam assembly and vehicle with same | |
| CN203438976U (en) | Installation support of air bag restraint system at tail of automobile | |
| CN107472176B (en) | Anti-collision device and automobile with same | |
| CN113276792B (en) | Vehicle anticollision subassembly | |
| KR101114035B1 (en) | Motor vehicle forebody structure | |
| CN212148441U (en) | High-voltage battery pack protection device for electric vehicle | |
| CN212172150U (en) | Automobile front bumper beam assembly structure | |
| CN207466781U (en) | The body frame structure for automotive of separate frame construction automobile with wheel anticollision | |
| CN215883815U (en) | Chassis structure and vehicle | |
| Feng et al. | Collision simulation and design optimization of rear underrun protection device of lorry | |
| CN205871973U (en) | Anticollision car structure | |
| CN205524082U (en) | Detachable electric automobile anticollision roof beam | |
| CN108454701A (en) | The base apparatus of motor vehicles | |
| CN117416423A (en) | Rear vehicle body structure for mounting charger on electric vehicle and application method | |
| CN215663313U (en) | Anti-collision cross beam structure before car | |
| CN210212304U (en) | High-safety automobile bumper | |
| CN219668143U (en) | Collision energy absorption structure applied to vehicle and vehicle | |
| CN211809470U (en) | Anti-collision automobile front bumper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20220324 Address after: 518000 room 1102, building 1, culture and Sports Center, Digang Avenue, Shajing street, Bao'an District, Shenzhen, Guangdong Province Applicant after: Lvchi intelligent (Shenzhen) Co.,Ltd. Address before: 201708 8th floor, block B, ETONG business park, 1777 Hualong Road, Qingpu District, Shanghai Applicant before: Green Chi Automotive Technology Group Co.,Ltd. |
|
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20210309 |