CN219172167U - Battery box locking device for electric automobile - Google Patents
Battery box locking device for electric automobile Download PDFInfo
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- CN219172167U CN219172167U CN202320136496.XU CN202320136496U CN219172167U CN 219172167 U CN219172167 U CN 219172167U CN 202320136496 U CN202320136496 U CN 202320136496U CN 219172167 U CN219172167 U CN 219172167U
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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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The utility model provides a battery box locking device for an electric automobile, which comprises a fixing component and a locking plug, wherein the fixing component comprises a shell, an inner pressing piece, a spherical clamping piece, a sealing plate and a spring, the shell is provided with a central through hole, the inner pressing piece, the spherical clamping piece and the spring are all arranged in the central through hole, and the sealing plate is fixedly connected with the shell; the annular plate of the inner pressing sheet is in fit connection with the inner wall of the shell, and spherical through holes are uniformly distributed on the side wall of the first hollow cylinder; the spherical clamping piece is matched with the spherical through hole; a limiting hole is formed in the bottom plate of the sealing plate, and a limiting fixing piece is arranged at the limiting hole; the spring is arranged between the sealing plate and the inner pressing piece, an annular notch is arranged on the locking plug, and the end part of the locking plug is inserted into the central through hole to be matched with the spherical clamping piece for self-locking or unlocking. The battery box is self-locked and unlocked through the matching of the spherical clamping piece and the annular notch, the self-locking structure is stable, the self-locking strength is more reliable, the internal abrasion caused by the vibration of the vehicle body is avoided, and the service life is prolonged.
Description
Technical Field
The utility model belongs to the technical field of new energy automobiles, and particularly relates to a battery box locking device for an electric automobile.
Background
Although electric vehicles do not have a complicated mechanical transmission mechanism, detection and maintenance for batteries have been an important content. At present, a part of vehicle types adopt a battery replacement mode to carry out the endurance and detection of the battery. In the power conversion mode, the battery box needs to be frequently disassembled, so that the problem of reliable fixing of the battery box body and the vehicle body is particularly important to be solved. The conventional battery box locking mechanism is complex to operate when the battery box is disassembled, can be manually operated when the battery box is locked and unlocked, is easy to damage equipment due to misoperation, not only is the battery box time-consuming to affect the battery replacement speed, but also the locking mechanism and tools are worn. The problem that self-locking structure of locking mechanism itself is unstable and self-locking intensity is not high leads to the battery box to fix unstably when vibrations appear or jolt in automobile body walking in-process, and locking mechanism inside wearing and tearing to reduce locking mechanism's life. It is therefore necessary to design a portable battery box locking device for an electric automobile.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model aims to provide the battery box locking device for the electric automobile, which is characterized in that the step through hole of the fixing component is used as a guide, the inner pressing piece drives the spherical clamping piece to move and limit, the self-locking and unlocking of the battery box are realized through the matching of the spherical clamping piece and the annular notch, the self-locking structure is stable, and the self-locking strength is more reliable. The utility model has the advantages of small volume, convenient installation, and limit fixing piece and electromagnetic unlocking function arranged at the bottom of the shell, thereby avoiding the internal abrasion caused by vibration in the running process of the vehicle body, avoiding the potential safety hazard caused by misoperation and improving the safety.
The utility model is realized by the following technical scheme:
the battery box locking device for the electric automobile comprises a fixing assembly and a locking plug, wherein the fixing assembly comprises a shell, an inner pressing piece, a spherical clamping piece, a sealing plate and a spring, the shell is of a cylindrical structure and is provided with a central through hole, the central through hole comprises an upper through hole and a lower through hole, a step through hole is formed in the joint of the upper through hole and the lower through hole through the inner wall of the shell of the rounded corner structure, the inner pressing piece, the spherical clamping piece and the spring are all arranged in the lower through hole, and the sealing plate is arranged at the bottom of the shell and is fixedly connected with the shell; the inner pressure piece comprises an annular plate and a first hollow cylinder, the outer circumference of the annular plate is in fit connection with the inner wall of the shell of the lower through hole, the upper edge of the inner circumference of the annular plate is vertically and fixedly connected with the bottom of the first hollow cylinder, the annular plate and the first hollow cylinder form a first outer step surface, the inner circumference of the annular plate is communicated with the inner circumference of the first hollow cylinder, and spherical through holes are uniformly distributed on the side wall of the first hollow cylinder; the spherical clamping piece is arranged on the first outer step surface and matched with the spherical through hole; the sealing plate comprises a bottom plate and a second hollow cylinder, the bottom of the second hollow cylinder is vertically and fixedly connected with the bottom plate, a limiting hole is formed in the center of the bottom plate, the limiting hole is communicated with the inner circle of the second hollow cylinder, and a limiting fixing piece is arranged at the position of the limiting hole in a matching mode; the spring is arranged between the sealing plate and the inner pressing piece, the lower end of the spring is inserted into the inner circle of the second hollow cylinder and is in contact connection with the bottom plate, and the upper end of the spring is in contact connection with the annular plate; the lower cylinder structure of the locking plug is provided with an annular notch matched with the spherical clamping piece, the end part of the locking plug is provided with a chamfer angle, and the end part of the locking plug is inserted into the central through hole of the shell to be matched with the spherical clamping piece for self-locking or unlocking.
Preferably, the shell, the inner pressing piece, the spring and the sealing plate are all arranged coaxially with the locking plug.
Preferably, the diameter of the upper through hole and the inner diameter of the inner pressing piece are equal to the outer diameter of the lower cylinder structure of the locking plug; the diameter of the lower through hole is larger than that of the upper through hole and is equal to the sum of the diameter of the lower cylindrical structure of the locking plug and the diameter of the double spherical clamping piece.
Preferably, the diameter of the shell is equal to that of the bottom plate, and a plurality of through holes with counter bore structures are uniformly distributed on the end face of the bottom plate along the circumference.
Preferably, the upper end face and the lower end face of the shell are provided with a plurality of threaded holes with blind hole structures along the circumference, and the threaded holes are the same in number and correspond to the through holes on the bottom plate in position; the upper end face of the shell is fixed with the battery box through a fixing bolt in a threaded mode, and the lower end face of the shell is fixed with the sealing plate through a fixing bolt in a threaded mode.
Preferably, the annular plate of the inner pressing sheet axially slides along the inner wall of the shell of the lower through hole, the upper end of the first hollow cylinder is limited by the inner wall of the shell of the rounding structure, and the annular plate is limited by a spring; the spherical clamping piece moves synchronously with the annular plate on the first outer step surface;
the spherical clamping piece is matched and locked with the annular notch on the locking plug at the position of the rounding structure, and the spherical clamping piece is unlocked with the locking plug in the lower through hole.
Preferably, the diameter of the spherical through holes is equal to that of the spherical clamping pieces, and the number of the spherical through holes is the same as that of the spherical clamping pieces, and the inner surfaces of the spherical through holes are matched with the outer surfaces of the spherical clamping pieces;
the diameter of the inner hole of the spherical through hole is smaller than that of the outer hole of the spherical through hole, the spherical clamping piece penetrates out of the inner hole of the spherical through hole, the main body of the spherical clamping piece is limited through the inner hole, and the outer surface of the spherical clamping piece penetrating out of the spherical through hole is matched with the inner surface of the annular notch on the locking plug.
Preferably, the limiting fixing piece is in threaded connection with the limiting hole, and the end portion of the limiting fixing piece is in contact connection with the locking plug.
Preferably, the locking plug further comprises an upper thread structure and a middle polygonal column structure, and the upper thread structure is fixedly connected with the vehicle body.
Preferably, the diameter of the spring is larger than that of the upper through hole and smaller than that of the second hollow cylinder, the compression amount of the spring is larger than or equal to the radius of the spherical clamping piece, and the spring is unlocked through electromagnet compression.
Compared with the prior art, the utility model has the following beneficial effects:
1. the utility model has small volume and convenient installation, realizes self-locking and unlocking by matching the spherical clamping piece with the annular notch, has stable self-locking structure and more reliable self-locking strength.
2. The utility model is provided with the step through hole in the shell of the fixing component, plays a role in guiding and limiting the inner pressing piece and the spherical clamping piece at the same time, and ensures that the device is more flexible in self-locking and unlocking operation through the telescopic principle of the spring.
3. The bottom of the sealing plate is provided with the limiting hole and the limiting fixing piece, so that the device is firmly locked, the internal abrasion caused by vibration of the vehicle body is avoided, and the service life of the device is prolonged.
4. The utility model has the advantages of more convenient and flexible operation, preventing manual misoperation, saving operation time, reducing tool abrasion and accelerating the power change speed by adopting an electromagnetic unlocking mode.
Drawings
FIG. 1 is an exploded view of a battery compartment locking device for an electric vehicle according to the present utility model;
FIG. 2 is a top view of the battery compartment locking device for an electric vehicle according to the present utility model;
FIG. 3 is a schematic self-locking diagram of the battery box locking device for the electric vehicle according to the present utility model;
FIG. 4 is a transverse cross-sectional view of FIG. 3 in accordance with the present utility model;
FIG. 5 is a vertical section of FIG. 3 of the present utility model;
FIG. 6 is a schematic diagram of the self-locking process of the present utility model.
The figure indicates:
1. a housing; 11. a central through hole; 111. a threaded hole; 112. an upper through hole; 113. a lower through hole; 2. an inner tabletting; 21. a first hollow cylinder; 211. a spherical through hole; 22. an annular plate; 3. a spherical clamping piece; 4. a spring; 5. a sealing plate; 51. a bottom plate; 511. a through hole; 512. a limiting hole; 52. a second hollow cylinder; 6. a fixing bolt; 7. locking the plug; 71. a lower cylinder structure; 711. a ring incision; 712. chamfering; 72. an upper thread structure; 73. a middle polygonal column structure; 8. a limit fixing piece; 9. and (5) a rounding structure.
Detailed Description
The present utility model will be described in detail with reference to the accompanying drawings.
The utility model relates to a battery box locking device for an electric automobile, which comprises a fixing component and a locking plug 7, as shown in fig. 1 to 6, wherein the fixing component comprises a shell 1, an inner pressing piece 2, a spherical clamping piece 3, a sealing plate 5 and a spring 4, and the shell 1, the inner pressing piece 2, the spring 4 and the sealing plate 5 are arranged coaxially with the locking plug 7. The shell 1 is of a cylindrical structure and is provided with a central through hole 11, the inner pressing piece 2, the spherical clamping piece 3 and the spring 4 are arranged in the central through hole 11, and the sealing plate 5 is arranged at the bottom of the shell 1 and is fixedly connected with the shell 1 at the opening of the lower through hole 113.
The diameter of the shell 1 is equal to that of the bottom plate 51, and a plurality of through holes 511 with counter bore structures are uniformly distributed on the end surface of the bottom plate 51 along the circumference. The upper end face and the lower end face of the housing 1 are provided with a plurality of threaded holes 111 with blind hole structures along the circumference, in this embodiment, the number of the threaded holes 111 arranged on the upper end face and the lower end face of the housing 1 is four, and the number of the threaded holes 111 on the housing 1 is the same as that of the through holes 511 on the bottom plate 51 and the positions of the threaded holes are corresponding to each other. The upper end surface of the housing 1 is screwed to the battery box at the screw hole 111 by a fixing bolt, and the lower end surface of the housing 1 is screwed to the sealing plate 5 at the screw hole 111 by a fixing bolt 6.
The central through hole 11 is configured as a stepped hole, as shown in fig. 6, and includes an upper through hole 112 and a lower through hole 113, and is located at the connection position of the upper through hole 112 and the lower through hole 113, that is, the inner wall of the housing at the step of the central through hole 11 is a rounded structure 9, which may also be referred to as an arc structure, and the upper through hole 112 and the lower through hole 113 of the central through hole form a stepped through hole through the inner wall of the housing at the rounded structure 9. The upper through hole 112 is provided at the upper end surface of the housing 1, the lower through hole 113 is located at the lower portion of the housing 1, and the opening of the lower through hole 113 is located at the lower end surface of the housing 1, and the diameter of the upper through hole 112 is smaller than the diameter of the lower through hole 113. The diameter of the upper through hole 112 and the inner diameter of the inner pressing piece 2 are equal to the outer diameter of the locking plug lower cylinder structure 71, and the diameter of the lower through hole 113 is equal to the sum of the diameter of the locking plug lower cylinder structure 71 and twice the diameter of the spherical clamping piece 3, so that the spherical clamping piece 3 can move up and down in the lower through hole 113.
The inner pressing piece 2 comprises an annular plate 22 and a first hollow cylinder 21, the outer circumference of the annular plate 22 is in fit connection with the inner wall of the lower through hole 113, and the annular plate 22 axially slides along the inner wall of the lower through hole 113. The upper edge of the inner circumference of the annular plate 22 is vertically and fixedly connected with the bottom of the first hollow cylinder 21, and when the inner pressing sheet 2 moves up and down, the upper end of the first hollow cylinder 21 is limited by the inner wall of the shell of the rounding structure 9.
The annular plate 22 forms a first outer stepped surface with the outer side of the first hollow cylinder 21, and the inner circle of the annular plate 22 has the same diameter as and communicates with the inner circle of the first hollow cylinder 21. A plurality of spherical through holes 211 are uniformly distributed on the side wall of the first hollow cylinder 21, the diameters of the spherical through holes 211 and the spherical clamping pieces 3 are equal, the number of the spherical through holes 211 is the same, and the inner surface of the spherical through holes 211 is matched with the outer surface of the spherical clamping pieces 3.
The spherical clamping member 3 is arranged on the first outer step surface and moves synchronously with the annular plate 22, and the spherical clamping member 3 is matched with the spherical through hole 211. The spherical clamping member 3 is matched and locked with the annular notch 711 on the locking plug 7 at the position of the rounding structure 9, and the spherical clamping member 3 is separated from the locking plug 7 in the lower through hole 113, namely, the spherical clamping member is unlocked. The diameter of the inner hole of the spherical through hole 211 is smaller than that of the outer hole, one side sphere of the spherical clamping piece 3 penetrates out of the inner hole of the spherical through hole 211, the main body of the spherical clamping piece 3 is limited through the inner hole, the outer surface of the part of the spherical clamping piece 3 penetrating out of the spherical through hole 211 is matched with the inner surface of the annular notch 711 on the locking plug 7, and the part of the spherical clamping piece 3 just forms a self-locking state with the annular notch 711.
The shrouding 5 includes bottom plate 51 and second hollow cylinder 52, and the bottom plate 51 is perpendicular fixed connection as an organic whole structure with the bottom of second hollow cylinder 52, and the central point of bottom plate 51 puts and is equipped with spacing hole 512, and spacing hole 512 and the interior circle coaxial setting of second hollow cylinder 52 communicate each other, and spacing hole 512 department is supporting to be equipped with spacing mounting 8. The limiting fixing piece 8 is in threaded connection with the limiting hole 512, and in a self-locking state, the end part of the limiting fixing piece 8 is in contact connection with the locking plug 7.
The spring 4 is arranged between the sealing plate 5 and the inner pressing piece 2, the diameter of the spring 4 is larger than that of the upper through hole 112 and smaller than that of the second hollow cylinder 52, the lower end of the spring 4 is inserted into the inner circle of the second hollow cylinder 52 and is in contact connection with the bottom plate 51 and limited through the bottom plate 51, the upper end of the spring 4 is in contact connection with the annular plate 22 and limits the annular plate 22, and the compression amount of the spring 4 is larger than or equal to the radius of the spherical clamping piece 3.
The locking plug 7 comprises a lower cylinder structure 71, an upper thread structure 72 and a middle polygonal cylinder structure 73 which are arranged as an integral structure, the upper thread structure 72 is fixedly connected with a vehicle body, an annular notch 711 matched with the spherical clamping piece 3 is arranged on the lower cylinder structure 71, and the inward concave radian of the annular notch 711 is matched with the outer surface of the spherical clamping piece 3. The end of the locking plug 7 is provided with a chamfer 712, the design of the chamfer 712 facilitating the insertion of the locking plug 7 into the central through hole 11 of the housing. The end of the locking plug 7 is sequentially inserted into the through hole 112 on the central through hole of the shell, the inner circle of the first hollow cylinder 21, the inner circle of the annular plate 22 and the spring 4, and is matched with the spherical clamping piece 3 in the central through hole 11 of the shell to perform self-locking or unlocking, so that the battery box is fixed between the middle polygonal cylinder structure 73 and the shell 1.
The following describes the embodiments of the present utility model further:
the upper screw structures 72 of the plurality of locking plugs 7 are fixed on the chassis of the vehicle body, the shell 1 of the plurality of fixing components is fixed on the battery box, and each locking plug 7 and the fixing component are in a group and correspond to each other in position.
As shown in fig. 6, when the battery box is self-locking, the battery box is lifted up by the lifting means, so that the lower cylinder structure 71 of the locking plug 7 is sequentially inserted into the inner circle of the first hollow cylinder 21, the inner circle of the annular plate 22 and the spring 4 from the upper through hole 112 of the central through hole of the housing. The lower cylindrical structure 71 is brought into contact with the spherical clamping member 3 in the central through hole 11, because the diameter from the upper through hole 112 to the lower through hole 113 gradually increases, at this time the spherical clamping member 3 moves down along the inner wall of the housing at the rounded structure 9 by the force of the end of the locking plug, and simultaneously drives the inner pressing piece 2 to move down synchronously, and the spring 4 is compressed synchronously until the end of the locking plug 7 contacts the sealing plate 5. The spherical clamping piece 3 is located between the shell wall of the lower through hole 113 and the locking plug 7, and the spherical clamping piece 3 can move up and down freely due to the inner diameter design of the lower through hole 113, so that the spherical clamping piece 3 is separated from the locking plug 7, the spring 4 starts to rebound, the inner pressing piece 2 and the spherical clamping piece 3 are jacked up together, and a part of the sphere of the spherical clamping piece 3 just penetrates through the spherical through hole 211 on the side wall of the first hollow cylinder 21 to fall into the annular notch 711 of the locking plug, and is completely matched with the annular notch 711. And then the battery box is separated from the lifting device, the battery box is influenced by gravity to drive the fixing assembly to move downwards, and at the moment, the spherical clamping piece 3 is tangent with the rounding structure 9 in the shell, so that self-locking is finished, as shown in figures 3-5. At this time, the limiting fixing piece 8 arranged at the bottom plate 51 is screwed up at the limiting hole 512, so that the upper end of the limiting fixing piece 8 is abutted against and pressed against the end part of the locking plug 7, and internal abrasion caused by vibration during vehicle body walking is prevented.
When unlocking operation is carried out, the limiting fixing piece 8 is unscrewed firstly, the battery box is lifted by the lifting device, the locking plug 7 is in contact with the sealing plate 5, the electromagnet is used for compressing the spring 4, the electromagnet can replace a manual wrench, the inner pressing piece 2 drives the spherical clamping piece 3 to move downwards through the magnetic force of the electromagnet, the spherical clamping piece 3 is separated from the annular notch 711 of the locking plug 7, then the battery box is driven by the lifting device to move downwards, and the locking plug 7 is separated from the fixing component, so that unlocking operation is completed.
The above examples are only illustrative of the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model, and various modifications and improvements made by those skilled in the art to the technical solution of the present utility model should fall within the scope of protection defined by the claims of the present utility model without departing from the spirit of the present utility model.
Claims (10)
1. A battery box locking device for an electric automobile is characterized by comprising a fixing component and a locking plug,
the fixing assembly comprises a shell, an inner pressing piece, a spherical clamping piece, a sealing plate and a spring, wherein the shell is of a cylindrical structure and is provided with a central through hole, the central through hole comprises an upper through hole and a lower through hole, a step through hole is formed in the joint of the upper through hole and the lower through hole through the inner wall of the shell of a rounding structure, the inner pressing piece, the spherical clamping piece and the spring are all arranged in the lower through hole, and the sealing plate is arranged at the bottom of the shell and is fixedly connected with the shell;
the inner pressure piece comprises an annular plate and a first hollow cylinder, the outer circumference of the annular plate is in fit connection with the inner wall of the shell of the lower through hole, the upper edge of the inner circumference of the annular plate is vertically and fixedly connected with the bottom of the first hollow cylinder, the annular plate and the first hollow cylinder form a first outer step surface, the inner circumference of the annular plate is communicated with the inner circumference of the first hollow cylinder, and spherical through holes are uniformly distributed on the side wall of the first hollow cylinder;
the spherical clamping piece is arranged on the first outer step surface and matched with the spherical through hole;
the sealing plate comprises a bottom plate and a second hollow cylinder, the bottom of the second hollow cylinder is vertically and fixedly connected with the bottom plate, a limiting hole is formed in the center of the bottom plate, the limiting hole is communicated with the inner circle of the second hollow cylinder, and a limiting fixing piece is arranged at the position of the limiting hole in a matching mode;
the spring is arranged between the sealing plate and the inner pressing piece, the lower end of the spring is inserted into the inner circle of the second hollow cylinder and is in contact connection with the bottom plate, and the upper end of the spring is in contact connection with the annular plate;
the lower cylinder structure of the locking plug is provided with an annular notch matched with the spherical clamping piece, the end part of the locking plug is provided with a chamfer, and the end part of the locking plug is inserted into the central through hole of the shell and is connected with the spherical clamping piece in a matched mode.
2. The battery compartment locking device for an electric vehicle of claim 1, wherein the housing, the inner pressing piece, the spring, and the sealing plate are all coaxially disposed with the locking plug.
3. The battery box locking device for an electric automobile according to claim 1, wherein the diameter of the upper through hole and the inner diameter of the inner pressure piece are both equal to the outer diameter of the locking plug lower cylinder structure; the diameter of the lower through hole is larger than that of the upper through hole, and the diameter of the lower through hole is equal to the sum of the diameter of the lower cylindrical structure of the locking plug and the diameter of the double spherical clamping piece.
4. The battery box locking device for an electric automobile according to claim 1, wherein the diameter of the shell is equal to the diameter of the bottom plate, and a plurality of through holes with counter bore structures are uniformly distributed on the end face of the bottom plate along the circumference.
5. The battery box locking device for the electric automobile according to claim 4, wherein the upper end face and the lower end face of the shell are provided with a plurality of threaded holes with blind hole structures along the circumference, and the threaded holes are the same in number and correspond to the through holes on the bottom plate in position; the upper end face of the shell is fixed with the battery box through a fixing bolt in a threaded mode, and the lower end face of the shell is fixed with the sealing plate through a fixing bolt in a threaded mode.
6. The battery box locking device for an electric automobile according to claim 1, wherein the annular plate of the inner pressing piece axially slides along the inner wall of the shell of the lower through hole, the upper end of the first hollow cylinder is limited by the inner wall of the shell of the rounded structure, and the annular plate is limited by a spring; the spherical clamping piece moves synchronously with the annular plate on the first outer step surface;
the spherical clamping piece is matched with the annular notch on the locking plug for self-locking at the position of the rounding structure, and the spherical clamping piece is unlocked with the locking plug in the lower through hole.
7. The battery box locking device for an electric automobile according to claim 1, wherein the spherical through holes and the spherical clamping pieces have the same diameter and the same number, and the inner surfaces of the spherical through holes are matched with the outer surfaces of the spherical clamping pieces;
the inner hole diameter of the spherical through hole is smaller than the outer hole diameter, the spherical clamping piece penetrates out of the inner hole of the spherical through hole, the main body of the spherical clamping piece is limited through the inner hole, and the outer surface of the spherical clamping piece penetrating out of the spherical through hole is matched with the inner surface of the annular notch on the locking plug.
8. The battery box locking device for an electric automobile according to claim 1, wherein the limiting fixing piece is in threaded connection with the limiting hole, and an end portion of the limiting fixing piece is in contact connection with the locking plug.
9. The battery box locking device for an electric automobile according to claim 1, wherein the locking plug comprises an upper screw structure and a middle polygonal column structure, and the upper screw structure is fixedly connected with the automobile body.
10. The battery box locking device for an electric automobile according to claim 1, wherein the diameter of the spring is larger than the diameter of the upper through hole and smaller than the diameter of the second hollow cylinder, and the spring is unlocked by electromagnet compression.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320136496.XU CN219172167U (en) | 2023-02-07 | 2023-02-07 | Battery box locking device for electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320136496.XU CN219172167U (en) | 2023-02-07 | 2023-02-07 | Battery box locking device for electric automobile |
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| Publication Number | Publication Date |
|---|---|
| CN219172167U true CN219172167U (en) | 2023-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202320136496.XU Active CN219172167U (en) | 2023-02-07 | 2023-02-07 | Battery box locking device for electric automobile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117158385A (en) * | 2023-10-08 | 2023-12-05 | 浙江三利农业科技(集团)有限公司 | Permanent auxiliary material used in hermetia illucens culture feed and application method thereof |
-
2023
- 2023-02-07 CN CN202320136496.XU patent/CN219172167U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117158385A (en) * | 2023-10-08 | 2023-12-05 | 浙江三利农业科技(集团)有限公司 | Permanent auxiliary material used in hermetia illucens culture feed and application method thereof |
| CN117158385B (en) * | 2023-10-08 | 2024-03-12 | 浙江三利农业科技(集团)有限公司 | Permanent auxiliary material used in hermetia illucens culture feed and application method thereof |
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