CN113937561B - Rotary contact electric connection assembly - Google Patents
Rotary contact electric connection assembly Download PDFInfo
- Publication number
- CN113937561B CN113937561B CN202111164672.2A CN202111164672A CN113937561B CN 113937561 B CN113937561 B CN 113937561B CN 202111164672 A CN202111164672 A CN 202111164672A CN 113937561 B CN113937561 B CN 113937561B
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- China
- Prior art keywords
- contact
- unit
- rotary
- contact unit
- assembly
- 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.)
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Links
- 239000012212 insulator Substances 0.000 claims description 16
- 238000007667 floating Methods 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000003780 insertion Methods 0.000 abstract description 10
- 230000037431 insertion Effects 0.000 abstract description 10
- 238000000605 extraction Methods 0.000 abstract description 3
- 238000011161 development Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/629—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances
- H01R13/631—Additional means for facilitating engagement or disengagement of coupling parts, e.g. aligning or guiding means, levers, gas pressure electrical locking indicators, manufacturing tolerances for engagement only
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/22—Contacts for co-operating by abutting
- H01R13/24—Contacts for co-operating by abutting resilient; resiliently-mounted
- H01R13/2407—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means
- H01R13/2428—Contacts for co-operating by abutting resilient; resiliently-mounted characterized by the resilient means using meander springs
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0042—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction
- H02J7/0045—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries characterised by the mechanical construction concerning the insertion or the connection of the batteries
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Connector Housings Or Holding Contact Members (AREA)
Abstract
The invention relates to a rotary contact electric connection assembly, which comprises a fixed end contact assembly and a rotary end contact assembly, wherein the fixed end contact assembly comprises a fixed supporting unit and a contact unit I; the rotary end contact assembly comprises a rotary support unit and a contact unit II, and the contact unit II is arranged on the rotary support unit; the rotary supporting unit is connected with the rotary shaft, and the rotary end contact assembly can rotate around the rotary shaft, so that the contact unit II on the rotary end contact assembly is connected with the contact unit I on the fixed end contact assembly. The invention can realize blind insertion, has high insertion precision, does not need manual insertion and extraction, does not need cable dragging, and improves the connection efficiency and safety of charging.
Description
Technical Field
The invention relates to the technical field of connectors, in particular to a rotary contact electric connection assembly.
Background
Along with the rapid development of the shared electric vehicle in China and the great demands of people on shared charging, the demands of the intelligent shared battery-changing cabinet and the shared battery are also larger and larger, and the improvement of the efficiency and convenience of battery charging and changing becomes a development direction and a research trend.
The battery charging cabinet of the existing market mainly comprises two charging modes of hard connection and soft connection. The hard connection charging mode is that one end of a charging interface is fixed on the rear bottom surface of the cabinet, the other end of the charging interface is fixed at the bottom of the battery, and the battery is charged after being pushed into a charging cabinet unit to be inserted with the charging interface; the soft connection charging mode is that a charging interface is connected with a movable cable with a certain length, and after a battery is arranged in a charging cabinet, a charging interface wire harness is manually inserted into the battery interface for charging.
The two charging modes meet basic charging requirements, but a charging interface in a hard-connection charging mode is arranged at the bottom, high matching precision is required during blind plugging, a connector is easy to be damaged due to oblique plugging, and the risk of misplug exists; the soft connection charging mode needs manual plug, influences efficiency and convenience, and charging cable drags and has the installation hidden danger, and the cost is higher.
Disclosure of Invention
In order to solve the above problems, the present invention provides a rotary contact electrical connection assembly, which mainly includes two contact assemblies, and a rotary end contact assembly is elastically contacted with a fixed end contact assembly after rotating a certain angle by a rotary shaft, so as to realize current and signal transmission. The invention can realize blind insertion, has high insertion precision, does not need manual insertion and extraction, does not need cable dragging, and improves the connection efficiency and safety of charging.
The invention is realized by the following technical scheme, and the rotary contact electric connection assembly provided by the invention comprises a fixed end contact assembly and a rotary end contact assembly, wherein the fixed end contact assembly comprises a fixed supporting unit and a contact unit I, and the contact unit I is fixedly arranged on the fixed supporting unit; the rotary end contact assembly comprises a rotary support unit and a contact unit II, and the contact unit II is fixedly arranged on the rotary support unit; the rotary supporting unit is connected with the rotary shaft, and the rotary end contact assembly can rotate around the rotary shaft, so that the contact unit II on the rotary end contact assembly is connected with the contact unit I on the fixed end contact assembly.
Further, the contact unit I comprises an insulator I, one or more cavities I are arranged on the insulator I, and the contacts I are assembled in the cavities I; the contact unit II comprises an insulator II, a cavity II is arranged on the insulator II, and a contact element II is assembled in the cavity II; the contact I corresponds to the position of the contact II, and connection and conduction can be performed.
Further, the contact piece I and/or the contact piece II are elastic contact pieces, and the contact unit I and the contact unit II are in elastic contact.
Further, the elastic contact is a contact with an elastic contact function formed by bending a metal sheet through one or more curved surfaces.
Further, the contact unit I and the contact unit II are respectively provided with an independent area protection structure for preventing misplug or short circuit.
Further, the contact unit II is connected with the cable through a terminal quick-change structure.
Still further, terminal quick replacement structure includes terminal and screw, and the one end of terminal is connected fixedly through the contact piece in screw and the contact unit II and is realized switching on, and the other end of terminal can be dismantled with the sinle silk of cable and be connected.
Further, the contact unit I is installed in a protruding mode on the fixed supporting unit, the contact unit II is installed in a protruding mode on the rotary supporting unit, and drainage grooves are formed in the contact unit I and the contact unit II.
Further, the contact unit I and the contact unit II ensure the opposite inserting precision through the guide structure when opposite inserting.
Further, the contact unit I and the contact unit II allow a certain floating contact when connected.
Further, the plurality of contact units I are arranged in parallel or in parallel, and the plurality of contact units II are also arranged in parallel or in parallel.
Compared with the prior art, the invention has the following advantages:
According to the invention, the connecting assembly is divided into the fixed end and the rotating end, the rotating end contact assembly can rotate around the rotating shaft, when the contact assembly is connected in an opposite-inserting way, the rotating end contact assembly rotates to drive the upper contact unit to be connected and conducted with the contact unit on the fixed end, and when the contact assembly is inserted in an opposite-inserting way, the opposite-inserting precision can be further improved through the guide structure. And the contact pieces of the rotating end and the fixed end are protected through the insulating cavity, so that the opposite inserting precision is further improved, and the contact pieces can be protected. The invention can realize blind insertion, has high insertion precision, does not need manual insertion and extraction, does not need cable dragging, and improves the connection efficiency and safety of charging.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
fig. 2 is a perspective view of the contact unit i;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a front view of FIG. 2;
fig. 5 is a perspective view of the contact unit ii;
FIG. 6 is a top view of FIG. 5;
Fig. 7 is a front view of fig. 5.
The device comprises a 1-fixed supporting unit, a 2-contact unit I, a 3-rotary supporting unit, a 4-contact unit II, a 5-rotary shaft, a 6-insulator I, a 7-cavity I, an 8-contact I, a 9-mounting hole I, a 10-insulator II, a 11-cavity II, a 12-contact II, a 13-mounting hole II, a 14-insulation step, a 15-terminal, a 16-screw, a 17-drainage groove, a 18-power contact I, a 19-signal contact I, a 20-power contact II and a 21-signal contact II.
Detailed Description
For a better understanding of the present invention, the present invention will be further described with reference to the following examples and drawings. This example is based on the technology of the present invention, and detailed embodiments and operation steps are given, but the scope of the present invention is not limited to the following examples.
As shown in fig. 1, the rotary contact electric connection assembly according to the present invention includes a fixed end contact assembly and a rotary end contact assembly, the fixed end contact assembly includes a fixed support unit 1 and a contact unit i 2, and the contact unit i is fixed on the fixed support unit by a certain manner, or may be fixed by a screw, or may be other existing fixing manners. The rotary end contact assembly comprises a rotary supporting unit 3 and a contact unit II 4, wherein the contact unit II is fixedly arranged on the rotary supporting unit in a certain mode, and can be fixed by a screw or other existing fixing modes. The rotary supporting unit is also connected with the rotary shaft 5, and the rotary end contact assembly can rotate around the rotary shaft, so that the contact unit II on the rotary end contact assembly is connected and conducted with the contact unit I on the fixed end contact assembly.
As shown in FIG. 2, the contact unit I comprises an insulator I6, one or more cavities I7 are formed in the insulator I, a contact I8 is assembled in the cavity I, and a mounting hole I9 is further formed in the insulator I and used for mounting the contact unit I on a fixed supporting unit.
As shown in fig. 5, the contact unit ii includes an insulator ii 10, one or more cavities ii 11 are provided on the insulator ii, a contact member ii 12 is assembled in the cavities ii, and a mounting hole ii 13 is further provided on the insulator ii for mounting the contact unit ii on the rotary support unit. The number and the position of the contact pieces I and the contact pieces II are equal, and the contact pieces I and the contact pieces II correspond to each other, so that connection and conduction can be performed.
At least one of the contact I and the contact II is an elastic contact, so that the contact unit I and the contact unit II are in elastic contact, and a contact force is provided through deformation of a contact pair. The drawing shows that the contact II is an elastic contact, and in this case, the elastic contact II can be a contact with an elastic contact function formed by bending a metal sheet through one or more curved surfaces. And still be provided with insulating step 14 in the cavity II for assembling contact II, contact unit I and contact unit II are to inserting the time, contact unit upper chamber body I's casing inserts in the cavity II, make contact I in the cavity I and the elastic contact II in the cavity II contact and switch on, under the effect of inserting force, the casing of cavity I pushes up on insulating step 14 in the cavity II, through the insulating step cooperation in cavity I and cavity II and the cavity II, guide contact is accurate to inserting and prevent the contact finger, realize dustproof safeguard function to the contact simultaneously, contact unit I and contact unit II still possess independent regional safeguard function through the structural design of cavity I and cavity II when inserting, can prevent misinsertion or short circuit.
Further, the contact unit ii is connected to the cable through a terminal quick change structure, one embodiment of which is shown in fig. 5: the terminal quick replacement structure includes terminal 15 and screw 16, and the one end of terminal is fixed through screw and elastic contact spare II connection and is realized switching on, and the other end of terminal can be dismantled with the sinle silk of cable and be connected, and the terminal can adopt current dismantlement connection fixed mode with the link of cable sinle silk. The terminal quick-change structure is not limited to the embodiment shown in the drawings.
Further, the contact unit I is installed in a protruding mode on the fixed supporting unit, the contact unit II is installed in a protruding mode on the rotary supporting unit, and the drainage grooves 17 are formed in the contact unit I and the contact unit II.
Further, the contact unit I and the contact unit II can ensure the opposite inserting precision through the guiding structure when opposite inserting. The guiding structure can guide the opposite insertion through the matching of the outer edge of the cavity I7 and the inner edge of the cavity II 11. Guide pins may be provided on contact element i and corresponding guide pin holes may be provided on contact element ii. Alternatively, the contact element ii may be provided with a guide pin, and the contact element i may be provided with a corresponding guide pin hole.
An example application of the invention is: the cabinet door of the charging cabinet can be provided with the contact unit II, the cabinet door is connected with the rotating shaft and can rotate around the rotating shaft, one end of the cable is connected with the main power supply, and the other end of the cable is detachably connected and fixed with the terminal on the contact unit II. The contact unit I is installed on the battery, when needing to charge the battery, the battery is placed in the charging cabinet, the cabinet door rotates around the rotating shaft to enable the contact unit II to be connected with the contact unit I in a butt-joint mode, in the butt-joint process, the butt-joint mode can be conducted through matching and guiding of the outer edge of the cavity I7 and the inner edge of the cavity II 11, elastic contact conduction between the contact piece I and the elastic contact piece II is achieved through locking force after the cabinet door is closed, and battery charging is achieved. If the contact unit II needs to be maintained or replaced, the contact unit II and the cable can be disconnected only by disassembling the terminal, and a new contact unit II and the cable can be connected after replacement.
Further, the charging cabinet can contain a plurality of charging units, each charging unit comprises a box body and a corresponding cabinet door, the contact unit II is installed on the cabinet door corresponding to each box body, the contact unit I is installed on the battery, the battery to be charged is placed in the corresponding box body, and the contact unit II is connected and conducted with the contact unit I through the rotary cabinet door.
Furthermore, one or more contact units II are installed on the cabinet door corresponding to each box body, and the contact units II can be arranged in parallel or in parallel, so that a plurality of batteries in the box body can be charged, and the batteries can be arranged in parallel or in parallel in the box body, so that the contact units I correspond to the contact units II.
The contact unit I and the contact unit II can be in floating contact when connected, and a certain floating distance is allowed.
In another embodiment of the present invention, the contact unit i includes a power contact i 18 and a signal contact i 19, and the contact unit ii also includes a corresponding power contact ii 20 and a corresponding signal contact ii 21, where the number and the positions of the power contact i and the power contact ii are equal, and the number and the positions of the signal contact i and the signal contact ii are equal. Two power contacts i and three signal contacts i are shown in fig. 2, and two power contacts ii and three signal contacts ii are shown in fig. 5. The present invention is not limited to the number and configuration shown in the drawings.
The foregoing is merely an embodiment of the present invention, and the present invention is not limited in any way, and may have other embodiments according to the above structures and functions, which are not listed. Therefore, any simple modification, equivalent variation and modification of the above embodiments according to the technical substance of the present invention without departing from the scope of the technical solution of the present invention will still fall within the scope of the technical solution of the present invention.
Claims (4)
1. The rotary contact electric connection assembly is characterized by comprising a fixed end contact assembly and a rotary end contact assembly, wherein the fixed end contact assembly comprises a fixed supporting unit (1) and a contact unit I (2), and the contact unit I (2) is arranged on the fixed supporting unit; the rotary end contact assembly comprises a rotary supporting unit (3) and a contact unit II (4), and the contact unit II (4) is arranged on the rotary supporting unit; the rotary supporting unit is connected with the rotary shaft (5), and the rotary end contact assembly can rotate around the rotary shaft, so that the contact unit II on the rotary end contact assembly is connected with the contact unit I on the fixed end contact assembly; the contact unit I (2) comprises an insulator I (6), one or more cavities I (7) are arranged on the insulator I, and a contact element I (8) is assembled in the cavities I; the contact unit II (4) comprises an insulator II (10), a cavity II (11) is arranged on the insulator II, and a contact element II (12) is assembled in the cavity II; the contact I corresponds to the contact II in position and can be connected and conducted; at least one of the contact I and the contact II is an elastic contact, so that the contact unit I and the contact unit II are in elastic contact; the elastic contact piece is a contact piece with an elastic contact function, which is formed by bending a metal sheet through one or more curved surfaces;
the contact I (8) comprises a power contact I (18) and a signal contact I (19), the contact II comprises a power contact II (20) and a signal contact II (21), the number and the position of the power contact I and the number of the power contact II are equal, the positions of the signal contact I and the signal contact II are corresponding, and the number and the position of the signal contact I and the number of the signal contact II are equal; an insulating step (14) is further arranged in a cavity II for assembling the contact II, when the contact unit I and the contact unit II are inserted in pairs, a shell of the cavity I is inserted into the cavity II to enable the contact I to be in contact conduction with the contact II, the shell of the cavity I is propped against the insulating step (14) in the cavity II, and the contact is guided to be accurately inserted in pairs and prevented from touching fingers through the matching of the cavity I, the cavity II and the insulating step (14), and meanwhile, the dustproof protection function is achieved;
The contact unit II is connected with the cable through a terminal quick-change structure, the terminal quick-change structure comprises a terminal (15) and a screw (16), one end of the terminal is fixedly connected with the contact element II through the screw to realize conduction, and the other end of the terminal is detachably connected with a wire core of the cable; the contact unit I and the contact unit II are also provided with drainage grooves (17);
The contact unit II is arranged on a cabinet door of the charging cabinet, the cabinet door is connected with the rotating shaft and can rotate around the rotating shaft, one end of the cable is connected with the main power supply, and the other end of the cable is detachably connected with a terminal on the contact unit II; the contact unit I is arranged on the battery; when the battery is required to be charged, the battery is placed into the charging cabinet, and the cabinet door rotates around the rotating shaft to enable the contact unit II to be connected with the contact unit I in a butt-inserting mode, so that the battery is charged.
2. The rotary contact-to-electrical connection assembly of claim 1, wherein the contact unit i (2) is mounted on the stationary support unit with a male protrusion and the contact unit ii (4) is mounted on the rotary support unit with a male protrusion.
3. The rotary contact-to-electrical connection assembly of claim 1, wherein the contact unit i (2) is connected to the contact unit ii (4) to allow a certain floating contact.
4. The rotary contact electrical connection assembly of claim 1, wherein the charging cabinet comprises a plurality of charging units, each charging unit comprising a housing and a corresponding cabinet door, contact unit ii being mounted on the corresponding cabinet door of each housing, contact unit i being mounted on the battery; one or more contact units II are arranged on the cabinet door corresponding to each box body, the contact units II are arranged in parallel, and the batteries in the box body are arranged in parallel, so that the contact units I and the contact units II correspond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111164672.2A CN113937561B (en) | 2021-09-30 | 2021-09-30 | Rotary contact electric connection assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111164672.2A CN113937561B (en) | 2021-09-30 | 2021-09-30 | Rotary contact electric connection assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113937561A CN113937561A (en) | 2022-01-14 |
| CN113937561B true CN113937561B (en) | 2024-05-14 |
Family
ID=79277717
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111164672.2A Active CN113937561B (en) | 2021-09-30 | 2021-09-30 | Rotary contact electric connection assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113937561B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1510786A (en) * | 1998-12-18 | 2004-07-07 | ������ϵͳ���չ�˾ | Socket of electric element |
| CN1879265A (en) * | 2003-09-11 | 2006-12-13 | 马格科德股份公司 | Device for establishing an electrical connection |
| CN206758747U (en) * | 2017-05-12 | 2017-12-15 | 泰科电子(上海)有限公司 | Socket casing and socket |
| CN209329274U (en) * | 2018-12-28 | 2019-08-30 | 广东顺科汽车电气制造有限公司 | A kind of new-energy automobile AC charging socket |
| CN110492320A (en) * | 2019-08-15 | 2019-11-22 | 中航光电科技股份有限公司 | A kind of intelligence changes electrical interface connector |
| JP2020119836A (en) * | 2019-01-25 | 2020-08-06 | ヒロセ電機株式会社 | Electric relay body |
| CN211700828U (en) * | 2020-03-02 | 2020-10-16 | 上海钧正网络科技有限公司 | Female end, male end, assembly, base and power supply and consumption equipment of electric connector |
| CN213989416U (en) * | 2020-11-28 | 2021-08-17 | 汇智机器人科技(深圳)有限公司 | High-fault-tolerance safe charging docking mechanism |
-
2021
- 2021-09-30 CN CN202111164672.2A patent/CN113937561B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1510786A (en) * | 1998-12-18 | 2004-07-07 | ������ϵͳ���չ�˾ | Socket of electric element |
| CN1879265A (en) * | 2003-09-11 | 2006-12-13 | 马格科德股份公司 | Device for establishing an electrical connection |
| CN206758747U (en) * | 2017-05-12 | 2017-12-15 | 泰科电子(上海)有限公司 | Socket casing and socket |
| CN209329274U (en) * | 2018-12-28 | 2019-08-30 | 广东顺科汽车电气制造有限公司 | A kind of new-energy automobile AC charging socket |
| JP2020119836A (en) * | 2019-01-25 | 2020-08-06 | ヒロセ電機株式会社 | Electric relay body |
| CN110492320A (en) * | 2019-08-15 | 2019-11-22 | 中航光电科技股份有限公司 | A kind of intelligence changes electrical interface connector |
| CN211700828U (en) * | 2020-03-02 | 2020-10-16 | 上海钧正网络科技有限公司 | Female end, male end, assembly, base and power supply and consumption equipment of electric connector |
| CN213989416U (en) * | 2020-11-28 | 2021-08-17 | 汇智机器人科技(深圳)有限公司 | High-fault-tolerance safe charging docking mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113937561A (en) | 2022-01-14 |
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