CN215266476U - Power battery cover plate - Google Patents
Power battery cover plate Download PDFInfo
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- CN215266476U CN215266476U CN202120517597.2U CN202120517597U CN215266476U CN 215266476 U CN215266476 U CN 215266476U CN 202120517597 U CN202120517597 U CN 202120517597U CN 215266476 U CN215266476 U CN 215266476U
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- hole
- pole
- cover plate
- ring
- power battery
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Gas Exhaust Devices For Batteries (AREA)
Abstract
A power battery cover plate comprises a cover plate body provided with a pole column hole, an insulating body buckled on the lower side of the cover plate body and a connecting assembly assembled in the pole column hole, the pole hole comprises a first pole through hole which is communicated up and down, a hole edge part formed on the periphery of the lower side of the first pole through hole and a convex ring part which is formed by upward protruding from the hole edge part, the insulating body is provided with a through hole corresponding to the pole hole, the through hole comprises a second pole through hole and a convex snap ring which is upwards protruded from the edge of the second pole through hole and buckled on the edge part of the hole, the top of the convex snap ring continuously protrudes upwards to form a plurality of clamping blocks, the connecting component comprises a pole, a sealing ring and a connecting sheet, the lower surface of the pole is provided with a plurality of clamping holes corresponding to the positions of the clamping blocks, and the clamping blocks are clamped into the clamping holes to position the pole. This application can effectively keep when spot welding, injection moulding the accurate position of utmost point post.
Description
Technical Field
The utility model relates to a power battery field especially relates to a power battery apron.
Background
The power battery is widely applied to the field of battery cars, has the characteristics of high power, large current and the like, and puts higher requirements on the safety and the cost of the battery. 202020211483.0 discloses a power battery cover plate, which comprises a cover plate body, an insulation body arranged on the lower side of the cover plate body, a positive and negative electrode connecting assembly arranged on the cover plate body, an explosion-proof unit and a liquid injection port, the cover plate body comprises an explosion-proof port, a liquid injection hole, a positive pole column hole and a negative pole column hole which are arranged on the cover plate body, the positive and negative connecting components respectively comprise a pole column which is downwards buckled into the pole column hole, a connecting sheet which is buckled into the pole column hole from bottom to top and is welded with the pole column, a sealing ring which is pressed between the cover plate body and the pole column and a forming body which integrally forms the pole column into the pole column hole, the connecting sheet is abutted to the lower part of the insulating body so as to be electrically isolated from the cover plate body, and no positioning structure is arranged between the insulating body and the pole, so that the pole is easy to displace. Simultaneously, explosion-proof unit adopts the welding lamellar body, causes explosion-proof unit to have the potential safety hazard, very easily causes the safety problem.
SUMMERY OF THE UTILITY MODEL
In view of the above, it is desirable to provide a cover plate for a power battery, which enables the positioning of the terminal post to be more precise and the stable sealing of the explosion-proof unit when the terminal post is injection molded.
In order to solve the technical problem, the application provides a power battery cover plate, including offer the apron body in utmost point post hole, lock in the insulator of apron body downside and assemble in downthehole coupling assembling of utmost point post, utmost point post hole including the first utmost point post that link up from top to bottom perforates, is formed in the hole marginal part of the first utmost point post perforation downside periphery and certainly the protruding ring portion that hole marginal part upwards protrudes and forms, insulator corresponds utmost point post hole position department is equipped with the perforating hole, the perforating hole include that the second utmost point post perforates and certainly the second utmost point post perforation edge upwards protrusion form the buckle in protruding snap ring on the hole marginal part, protruding snap ring top continues upwards the protrusion and is formed with a plurality of fixture blocks, coupling assembling includes utmost point post, centre gripping in utmost point post lower surface with sealing washer between the hole marginal part upper surface and certainly the insulator downside is recessed in the perforating hole and with utmost point post lower surface spot welding fixes The lower surface of the pole is provided with a plurality of clamping holes corresponding to the positions of the clamping blocks, and the clamping blocks are clamped into the clamping holes to position the pole.
Preferably, the sealing ring is sleeved on the periphery of the protruding clamping ring or the plurality of clamping blocks, and the sealing ring is clamped and sealed by the lower surface of the pole and the upper surface of the edge part of the hole.
Preferably, the inner diameter of the hole edge part is smaller than that of the protruding ring part, an inner inclined plane is formed on the periphery of the hole edge part and the cover plate body, and the inner diameter of the inner inclined plane is not larger than that of the protruding ring part.
Preferably, a step-shaped edge clamping portion is formed on an inner edge of the hole edge portion, and a clamping groove which is clamped on the edge clamping portion is correspondingly formed on the outer peripheral surface of the protruding clamping ring.
Preferably, utmost point post still including utmost point cylinder and form in utmost point cylinder periphery and outside below slope's periphery inclined plane, coupling assembling still includes the shaping body, the shaping body is filled with utmost point post with space between the utmost point post hole forms the isolation utmost point post with the ring body of apron body.
Preferably, run through in the middle of the shaping body and be formed with the bearing space who bears utmost point post, certainly ring body bottom downwardly extending to hole edge portion upside with the shaping buckle of inner inclined plane downside, cover the bearing ring groove of protruding ring portion and suppress in the pressing inclined plane on the periphery inclined plane.
Preferably, the thickness of the hole edge part is one fourth to one half of the thickness of the cover plate body, the bottom surface of the hole edge part is flush with the bottom surface of the cover plate body, and the upper surface of the hole edge part is lower than the upper surface of the cover plate body.
Preferably, the connecting sheet comprises a connecting sheet body limited on the lower side of the insulating body and an upper concave buckling part which is formed by upward stamping of the connecting sheet body and is upwards recessed into the through hole, and the upper surface of the upper concave buckling part is in contact with the lower surface of the pole and is fixed together by spot welding.
This application power battery apron is through insulator's protrusion snap ring top continues upwards to extend and forms a plurality of fixture blocks the utmost point post bottom corresponds fixture block position department sets up a plurality of card holes, makes the fixture block card is gone into the downthehole location of card can keep the accurate position of utmost point post avoids utmost point post position change, guarantee with can not appear offset after the connection piece spot welding and cause with the condition of apron body short circuit.
For solving the technical problem, this application still provides a power battery apron, including offer the apron body in utmost point post hole, lock in the insulator of apron body downside, locate explosion-proof unit on the apron body and assemble in the downthehole coupling assembling of utmost point post, explosion-proof unit include explosion-proof body and paste cover in apron body top and cover the paster of explosion-proof body, explosion-proof body includes central part and body coupling the U type structure of central part, the U type structure include certainly the central part slant downwardly extending forms first portion of buckling, certainly the second portion of buckling that the apron body slant downwardly extending formed and link up in the bottom first portion of buckling with the slim bottom of second portion of buckling, the thickness of U type structure is less than the central part with the thickness of apron body.
Preferably, the first stretch-bending part and the second stretch-bending part are gradually thinned from top to bottom, and the thickness of the thin bottom reaches the thinnest.
The explosion-proof body of this application power battery apron forms through integrative punching press in on the apron body, can realize better leakproofness.
Drawings
Fig. 1 is a perspective view of a power battery cover plate of the present application;
FIG. 2 is a perspective view of another angle of the cover plate of the power battery of the present application;
fig. 3 is an exploded perspective view of a cover plate of a power battery of the present application;
FIG. 4 is a cross-sectional view of a portion of the structure of the exploded view of FIG. 3;
fig. 5 is a sectional view taken along the broken line a-a shown in fig. 1.
The meaning of the reference symbols in the drawings is:
a cover plate body-10; a body portion-11; a post hole-12; a first pole perforation-121; a bore edge portion-122; an edge card portion-123; a raised ring portion-124; inner inclined plane-125; a liquid injection hole-13; an insulator body-20; a main body portion-21; an explosion-proof hollowed-out portion-22; microwell-221; liquid injection opening-23; a through-hole-24; a protruding snap ring-241; a latch-242; a card slot-243; a second pole perforation-244; -a connecting assembly-30; a connecting sheet-31; a connecting piece-311; an upper concave snap-in portion-312; a seal ring-32; a pole-33; a pole body-331; upper positioning holes-332; peripheral bevel-333; a card hole-334; lower locating holes-335; -34, a shaped body; ring body-341; a load-bearing cavity-342; forming a buckle-343; a bearing ring groove-344; pressing a bevel-345; an explosion-proof unit-40; an explosion-proof body-41; a central portion-411; a first stretch-bend portion-412; a thin bottom-413; a second stretch-bend portion-414; patch-42.
Detailed Description
In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
In the present application, the X direction shown in fig. 1 is the left-right direction (lateral direction), the Y direction is the front-back direction (longitudinal direction), and the Z direction is the vertical direction.
Referring to fig. 1 to 3, the power battery cover plate of the present application includes a cover plate body 10, an insulating body 20 fastened to a lower side of the cover plate body 10, a connecting assembly 30 disposed between the cover plate body 10 and the insulating body 20, an explosion-proof unit 40 disposed on the cover plate body 10, and a liquid injection hole 13 disposed on the cover plate body 10.
As shown in fig. 3 to 5, the cover plate body 10 includes a body 11, post holes 12 penetrating the body 11 at both lateral sides, an explosion-proof body 41 formed on the cover plate body 10 by stamping, and the liquid injection hole 13 opened on the cover plate body 10.
The pole column hole 12 is respectively provided with one on the left and right sides, and is regarded as positive pole column hole and negative pole column hole respectively, coupling assembling 30 includes positive and negative two, and the structure is all unanimous, but the material has the difference. The pole post hole 12 includes a first pole post through hole 121, a hole edge portion 122 formed at an edge of the first pole post through hole 121, and a protruding ring portion 124 formed to protrude upward from an outer periphery of a top of the first pole post through hole 121. The lower surface of the hole edge portion 122 is flush with the lower surface of the cover plate body 10, the upper surface of the hole edge portion 122 is lower than the upper surface of the cover plate body 10, and the inner diameter of the hole edge portion 122 is smaller than the inner diameter of the protruding ring portion 124, so that the hole edge portion 122 forms an annular support surface with a certain width. The thickness of the hole edge portion 122 is between one quarter and one half of the thickness of the cap body 10.
A step-shaped edge clamping part 123 is formed on the inner edge of the hole edge part 122, an inner inclined plane 125 is formed at the bottom of the protruding ring part 124 close to the hole edge part 122, and the inner diameter of the minimum part of the inner inclined plane 125 is not less than that of the protruding ring part 124.
The explosion-proof unit 40 includes an explosion-proof body 41 integrally formed on the cover body 10 and a patch 42 attached to an upper surface of the cover body 10. The explosion-proof body 41 comprises a central portion 411, a first bending portion 412 formed by downward arc-shaped extension from the periphery of the central portion 411, a second bending portion 414 formed by upward arc-shaped extension from the bottom of the first bending portion 412, and a thin bottom 413 formed at the connection position of the first bending portion 412 and the second bending portion 414. The second bending portion 414 is formed by extending downward from the cover body 10 and is integrally connected to the cover body 10. The first bending part 412, the second bending part 414 and the thin bottom 413 form a U-shaped structure, and the central part 411 is connected with the cover plate body 10 as a whole through the U-shaped structure. First portion 412, the second portion 413 that draws the turn down thickness attenuate gradually from the top thin bottom 413 department thickness reaches thinnest. The patch 42 is adhered to the upper surface of the cover plate body 10 and covers the explosion-proof body 41 to protect the explosion-proof body 41, and when the internal pressure of the battery increases sharply, the thin bottom 413 at the thinnest part of the explosion-proof body 41 is firstly subjected to pressure fracture to release the pressure outwards.
The explosion-proof body 41 of the power battery cover plate is formed on the cover plate body 10 through integral stamping, and better sealing performance can be achieved.
The insulating body 20 includes a main body 21 located below the cover body 10, a through hole 24 penetrating the main body 21 in the vertical direction, an explosion-proof hollow portion 22 located below the explosion-proof body 41, and a liquid injection opening 23 formed penetrating the main body 21. The through hole 24 of the insulating body 20 corresponds to the pole hole 12 of the cover body 10. The explosion-proof hollow-out part 22 is formed with a plurality of micropores 221.
The through hole 24 of the insulating body 20 includes a second pole through hole 244 penetrating up and down, a protruding snap ring 241 protruding upward from the outer circumference of the second pole through hole 244, and a plurality of latch blocks 242 extending upward from the protruding snap ring 241. The insulating body 20 is assembled on the cover plate body 10, specifically, the protruding snap ring 241 passes through the pole hole 12 of the cover plate body 10, a circle of clamping groove 243 is formed at the lower side of the periphery of the protruding snap ring 241, and after the protruding snap ring 241 is placed in the pole hole 12 of the cover plate body 10, the clamping groove 243 is clamped into the edge clamping portion 123 of the hole edge portion 122 to fix the insulating body 20 and the cover plate body 10.
The connecting assembly 30 includes a connecting piece 31 which is clamped into the pole column hole 12 and the through hole 24 from the lower side of the insulating body 20, a pole column 33 which is buckled into the pole column hole 12 from the upper side of the cover plate body 10, a sealing ring 32 which is clamped between the hole edge portion 122 and the pole column 33, and a forming body 34 which is used for forming and fixing the pole column 33 in the pole column hole 12.
The connecting piece 31 includes a connecting piece 311 and an upper concave buckling part 312 which is formed by upward stamping from the connecting piece 311 and is concave into the pole hole 12 and the through hole 24. The upper surface of the upper concave snap-in portion 312 is a flat surface. The inner diameter of the sealing ring 32 is larger than the inner diameter of the hole edge portion 122 and smaller than the inner diameter of the protruding ring portion 124, that is, the sealing ring 32 is supported on the upper surface of the hole edge portion 122.
The pole 33 includes a button-shaped pole body 331, an outer peripheral inclined surface 333 inclined downward from the outer periphery of the pole body 331, a fastening hole 334 corresponding to the fastening block 242 of the insulating body 20, and an upper positioning hole 332 and a lower positioning hole 335 formed on the upper and lower surfaces of the pole body 331.
The molded body 34 includes a ring body 341 located between the outer periphery of the pole post 33 and the inner surface of the pole post hole 12 of the cover plate body 10, a molded buckle 343 extending downward from the ring body 341 and filling the upper side of the hole edge portion 122 and the lower side of the inner inclined surface 125, a bearing cavity 342 penetrating in the up-down direction to bear the pole post 33, a pressing inclined surface 345 formed by inclining from the upper side of the bearing space 342 to the center of a circle and pressing on the outer inclined surface 333 of the pole post 33, and a bearing ring groove 344 formed on the outer lower side of the ring body 341 and wrapping the protruding ring portion 124.
When assembling the power battery cover plate of the present application, the insulating body 20 is firstly buckled into the pole hole 12 of the cover plate body 10, specifically, the protruding snap ring 241 at the periphery of the through hole 24 of the insulating body 20 is buckled on the hole edge portion 122 of the pole hole 12, and the buckling groove 243 at the periphery of the protruding snap ring 241 is buckled on the edge buckling portion 123 of the hole edge portion 122 to fix the insulating body; subsequently, the sealing ring 32 is put into the pole hole 12, and the outer periphery of the plurality of latch blocks 242 supported by the sealing ring 32 is positioned on the upper surface of the hole edge portion 122; subsequently, the pole 33 is clamped downwards into the pole hole 12, and at this time, a plurality of clamping holes 334 on the lower side of the pole 33 are matched and positioned with the clamping blocks 242; meanwhile, the upper concave buckling part 312 of the connecting piece 31 is placed into the through hole 24 from the lower part of the insulating body 20, the upper surface of the upper concave buckling part 312 is attached to the lower surface of the pole 33, the connecting piece 31 and the pole 33 are fixed together by spot welding at the lower side of the connecting piece 31, at this time, the pole 33 is limited by the fixture block 242 of the insulating body 20, and the pole 33 can be accurately positioned to avoid the contact between the pole 33 and the cover plate body 10; finally, the assembled combination body is subjected to in-mold injection molding to form the forming body 34, and the forming body 34 fills the gap between the pole 33 and the pole hole 12 to realize sealing and simultaneously isolate the electric contact between the pole 33 and the cover plate body 10.
This application power battery apron is through the protrusion snap ring 241 top of insulator 20 continues upwards to extend and forms a plurality of fixture blocks 243 utmost point post 33 bottom corresponds fixture block 243 position department sets up a plurality of card holes 334, makes fixture block 243 card is gone into in the card hole 334 location, can keep utmost point post 33's accurate position avoids utmost point post 33 position change, guarantee with connection piece 31 spot welding back can not appear offset and cause with the condition of apron body 10 short circuit.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only represent preferred embodiments of the present invention, which are described in more detail and detail, but are not to be construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A power battery cover plate comprises a cover plate body provided with a pole post hole, an insulating body buckled on the lower side of the cover plate body and a connecting assembly assembled in the pole post hole, wherein the pole post hole comprises a first pole post perforation which is vertically communicated, a hole edge part formed on the periphery of the lower side of the first pole post perforation and a protruding ring part which is formed by upward protruding from the hole edge part, a through hole is formed in the position, corresponding to the pole post hole, of the insulating body, the through hole comprises a second pole post perforation and a protruding snap ring which is formed by upward protruding from the edge of the second pole post perforation and buckled on the hole edge part, the connecting assembly is characterized in that the top of the protruding snap ring continuously protrudes upwards to form a plurality of clamping blocks, the connecting assembly comprises a pole post, a sealing ring which is clamped between the lower surface of the pole post and the upper surface of the hole edge part, and a connecting sheet which is recessed into the through hole from the lower side of the insulating body and fixed with the lower surface of the pole post by spot welding, the lower surface of the pole is provided with a plurality of clamping holes corresponding to the positions of the clamping blocks, and the clamping blocks are clamped into the clamping holes to position the pole.
2. The cover plate for a power battery of claim 1, wherein the sealing ring is sleeved on the periphery of the protruding snap ring or the plurality of snap blocks, and the sealing ring is clamped and sealed by the lower surface of the pole and the upper surface of the edge of the hole.
3. The power battery cover plate according to claim 2, wherein the inner diameter of the hole edge part is smaller than that of the protruding ring part, an inner inclined surface is formed on the periphery of the hole edge part and the cover plate body, and the inner diameter of the inner inclined surface is not larger than that of the protruding ring part.
4. The cover plate for power battery as claimed in claim 3, wherein a step-shaped edge clamping portion is formed on the inner edge of the edge portion of the hole, and a clamping groove for clamping the edge clamping portion is correspondingly formed on the outer circumferential surface of the protruding clamping ring.
5. The power battery cover plate of claim 4, wherein the pole further comprises a pole column body and a peripheral slope formed on the periphery of the pole column body and inclined outwards and downwards, and the connecting assembly further comprises a forming body which fills the space between the pole and the pole column hole and forms a ring body for isolating the pole from the cover plate body.
6. The cover plate for a power battery of claim 5, wherein the forming body is formed with a bearing space for bearing the pole, a forming buckle extending downward from the bottom of the ring body to the upper side of the edge of the hole and the lower side of the inner inclined plane, a bearing ring groove covering the protruding ring part, and a pressing inclined plane pressing on the outer inclined plane.
7. The power cell cover plate of claim 6, wherein the thickness of the hole edge portion is one quarter to one half of the thickness of the cover plate body, the bottom surface of the hole edge portion is flush with the bottom surface of the cover plate body, and the upper surface of the hole edge portion is lower than the upper surface of the cover plate body.
8. The power battery cover plate according to claim 7, wherein the connecting sheet comprises a connecting sheet body limited on the lower side of the insulating body and an upper concave buckling part which is formed by upward stamping of the connecting sheet body and is upwards recessed into the through hole, and the upper surface of the upper concave buckling part is in contact with the lower surface of the pole and is fixed together by spot welding.
9. The utility model provides a power battery apron, including offer the apron body in the utmost point post hole, the lock in the insulator of apron body downside, locate explosion-proof unit on the apron body and assemble in downthehole coupling assembling of utmost point post, its characterized in that, explosion-proof unit include explosion-proof body and paste cover in apron body top and cover the paster of explosion-proof body, explosion-proof body includes central part and body coupling the U type structure of central part, U type structure include certainly the first portion of flare that central part slant downwardly extending formed, certainly the second portion of flare that forms of extending downwards to the apron body slant and linking in the bottom first portion of flare with the slim bottom of second portion of flare, the thickness of U type structure is less than the central part with the thickness of apron body.
10. The cover plate for a power battery of claim 9, wherein the first stretch-bending portion and the second stretch-bending portion are gradually thinned from top to bottom, and the thickness reaches the thinnest at the thin bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120517597.2U CN215266476U (en) | 2021-03-11 | 2021-03-11 | Power battery cover plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120517597.2U CN215266476U (en) | 2021-03-11 | 2021-03-11 | Power battery cover plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215266476U true CN215266476U (en) | 2021-12-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120517597.2U Active CN215266476U (en) | 2021-03-11 | 2021-03-11 | Power battery cover plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215266476U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114799699A (en) * | 2022-05-26 | 2022-07-29 | 宜宾长盈精密技术有限公司 | Battery cover plate pole welding tool |
| CN115055849A (en) * | 2022-07-27 | 2022-09-16 | 宜宾长盈精密技术有限公司 | Battery cover plate pole welding tool |
-
2021
- 2021-03-11 CN CN202120517597.2U patent/CN215266476U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114799699A (en) * | 2022-05-26 | 2022-07-29 | 宜宾长盈精密技术有限公司 | Battery cover plate pole welding tool |
| CN115055849A (en) * | 2022-07-27 | 2022-09-16 | 宜宾长盈精密技术有限公司 | Battery cover plate pole welding tool |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220623 Address after: 644000 No. 801-11, data center, No. 9, shaping section, Guoxing Avenue, Lingang Economic Development Zone, Yibin City, Sichuan Province Patentee after: Yibin Changying Precision Technology Co.,Ltd. Patentee after: Shenzhen Changying Precision Technology Co., Ltd Address before: 518000 No.3 Factory, Qiaotou Fuqiao Industrial Zone, Fuyong Town, Bao'an District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN EVERWIN PRECISION TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right |