Universal floating mechanism for supporting bottom of battery pack

Abstract

The utility model relates to the technical field of electric vehicle battery replacement. A universal floating mechanism for supporting the bottom of a battery pack comprises a lifting and supporting assembly, and the lifting and supporting assembly comprises a fixing base, a driving motor, a worm and gear lifting machine, a lifting ball rod and a lifting ball socket base; a driving motor and a worm and gear elevator are installed on the fixing base, a power output shaft of the driving motor is in transmission connection with a power input shaft of the worm and gear elevator through a coupler, a lifting ball rod is installed on a lifting shaft of the worm and gear elevator, and a ball head structure is arranged at the top of the lifting ball rod. A ball bowl structure rotationally connected with the ball head structure is arranged on the lifting ball socket seat; the supporting surface of the lifting ball socket seat is used for supporting the bottom of the battery pack; the outer wall of the lifting ball socket base is provided with at least two proximity induction switches arranged in the circumferential direction, and the induction directions of the proximity induction switches face upwards and are perpendicular to the supporting face of the lifting ball socket base. And supporting under different inclination conditions can be met conveniently.

Description

Technical Field

[0001] The utility model relates to the technical field of battery replacement for electric vehicles, and in particular to a battery pack support mechanism. Background Art

[0002] With the increasing popularity of new energy vehicles, the battery replacement link of electric vehicles is an important issue that the electric vehicle industry needs to solve. Using special battery replacement equipment to achieve automatic battery replacement is the technical development direction of electric vehicle charging and swapping stations.

[0003] Because the vehicle body posture may be skewed, when the battery swap robot's telescopic fork transfers the battery pack, it is necessary to lift the bottom of the battery pack on the electric vehicle according to the vehicle posture, so that the fork arm of the telescopic fork can support the battery pack and then transfer it.

[0004] Currently, there is a lack of a mechanism that can support the battery pack according to the inclination of the bottom of the battery pack. Utility Model Content

[0005] In response to the problems existing in the prior art, the present invention provides a universal floating mechanism for supporting the bottom of a battery pack, which solves at least one of the above technical problems.

[0006] The technical solution of the utility model is: a universal floating mechanism for supporting the bottom of a battery pack, characterized in that it includes a lifting support assembly, the lifting support assembly includes a fixed seat, a drive motor, a worm gear lifter, a lifting ball rod and a lifting ball socket;

[0007] The driving motor and the worm gear elevator are installed on the fixed seat, the power output shaft of the driving motor is connected to the power input shaft of the worm gear elevator through a coupling, the lifting shaft of the worm gear elevator is installed with the lifting ball rod, the top of the lifting ball rod is provided with a ball head structure, and the lifting ball socket is provided with a ball bowl structure rotatably connected to the ball head structure;

[0008] The support surface of the lifting ball socket is used to support the bottom of the battery pack;

[0009] At least two proximity sensing switches arranged along the circumference and used to sense the bottom of the battery pack are installed on the outer wall of the lifting ball socket. The sensing direction of the proximity sensing switches is upward and perpendicular to the supporting surface of the lifting ball socket.

[0010] The utility model facilitates the support to meet different tilt conditions by lifting the support assembly.

[0011] During operation, the drive motor provides power to the worm gear elevator via a coupling. The worm gear elevator converts the rotational force into vertical up and down motion. When any point of the lifting ball and socket contacts the bottom of the battery pack, the worm gear elevator continues upward movement. When all proximity sensors sense the bottom of the battery pack, the drive motor stops, and the worm gear elevator stops ascending. Because the battery pack bottom provides resistance, the lifting ball and socket rotate adaptively during ascent, stopping when the support surface is completely flat.

[0012] Further preferably, the sensing surface of the proximity sensing switch is lower than the supporting surface.

[0013] Further preferably, the difference between the sensing surface of the proximity sensing switch and the supporting surface is less than 8 mm.

[0014] Further preferably, two proximity sensing switches are provided, and the two proximity sensing switches are symmetrically arranged on both sides of the lifting ball socket.

[0015] Further preferably, the lifting ball socket includes an upper flange and a lower flange arranged above and below, and the upper flange and the lower flange are detachably connected to form the ball bowl structure;

[0016] An outwardly extending extension ring is provided on the top of the upper flange, and a support frame is detachably connected to the lower side of the extension ring, and the support frame is detachably connected to the proximity sensing switch.

[0017] Further preferably, the lower flange includes two semi-annular flanges, which are arranged on the periphery of the spherical head structure, and the two semi-annular flanges are detachably connected to the upper flange.

[0018] Further preferably, an oil filling port is provided on the lifting ball socket, the upper end of the oil filling port is connected to the support surface, and the lower end of the oil filling port is connected to the connection between the ball head structure and the ball bowl structure.

[0019] Further preferably, an annular oil guide groove is provided on the inner wall of the upper flange.

[0020] As a preferred solution, two lifting support assemblies are provided, and the two lifting support assemblies are respectively mounted on two telescopic forks arranged side by side.

[0021] Further preferably, the two lifting support assemblies are respectively a first lifting support assembly and a second lifting support assembly;

[0022] The two telescopic forks arranged side by side are respectively a first telescopic fork and a second telescopic fork;

[0023] The distance from the end of the first telescopic fork to the first lifting support assembly is different from the distance from the end of the second telescopic fork to the second lifting support assembly.

[0024] As another preferred solution, four lifting support assemblies are provided, and two of the four lifting support assemblies are installed on the same telescopic fork.

[0025] Further preferably, at least two groove-shaped recesses are provided in the length direction of the battery pack, and the groove-shaped recesses are formed by the gap between the two strip-shaped protrusions;

[0026] The length direction of the battery pack is perpendicular to the length direction of the groove-shaped notch;

[0027] At least one lifting ball socket is arranged along the length direction of the groove-shaped recess, and the lifting ball socket is embedded in the groove-shaped recess.

[0028] Compared with the prior art, the beneficial effect of the present invention is that the present invention can position and support the battery pack according to the inclination of the bottom of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a structural diagram of a lifting support assembly according to a specific embodiment 1 of the present invention;

[0030] Figure 2 This is a partial exploded view of the lifting support assembly of the specific embodiment 1 of the present utility model;

[0031] Figure 3 This is a structural diagram of a lifting support assembly according to a specific embodiment 1 of the present invention;

[0032] Figure 4 For this utility model Figure 3 Cross-sectional view at AA in the middle;

[0033] Figure 5 This is a structural diagram of a specific embodiment 3 of the present utility model;

[0034] Figure 6 This is a structural diagram of a specific embodiment 2 of the present utility model;

[0035] Figure 7 This is a structural schematic diagram of a battery pack according to a specific embodiment 1 of the present invention.

[0036] Figure numerals: 3 is a telescopic fork, 4 is a lifting support assembly; 401 is a base, 402 is a support base, 403 is a drive motor, 404 is a coupling, 405 is a worm gear lifter, 406 is a latch shaft, 407 is a first proximity sensor switch, 408 is a lifting ball rod, 409 is a lower flange, 410 is an upper flange, 411 is a second proximity sensor switch, 201 is a strip-shaped protrusion, and 202 is a groove-shaped recess. DETAILED DESCRIPTION

[0037] See also Figures 1 to 7 , Specific embodiment 1, a universal floating mechanism for supporting the bottom of a battery pack, including a lifting support assembly 4, the lifting support assembly 4 includes a fixed seat, a drive motor 403, a worm gear lifter 405, a lifting ball rod 408 and a lifting ball socket seat; the driving motor 403 and the worm gear lifter 405 are installed on the fixed seat, the power output shaft of the driving motor 403 is connected to the power input shaft of the worm gear lifter 405 through a coupling 404, the lifting ball rod 408 is installed on the lifting shaft of the worm gear lifter, the top of the lifting ball rod 408 is provided with a ball head structure, and the lifting ball socket seat is provided with a ball bowl structure rotatably connected to the ball head structure; the support surface of the lifting ball socket seat is the support surface for supporting the bottom of the battery pack; at least two proximity sensing switches arranged along the circumferential direction and used to sense the bottom of the battery pack are installed on the outer wall of the lifting ball socket seat, and the sensing direction of the proximity sensing switch is upward and perpendicular to the support surface of the lifting ball socket seat. The utility model facilitates the support of different tilt conditions by lifting the support assembly 4. At least two proximity sensing switches are installed on the outer wall of the lifting ball socket and are arranged at equal intervals in the circumference.

[0038] The fixing base includes a support base 402 and a base 401 that are detachably connected to each other. A drive motor 403 and a worm gear lifter 405 are mounted on the support base 402. An upwardly extending support plate is provided on the base 401, which abuts against the bottom of the support base and is detachably connected.

[0039] During operation, the drive motor 403 provides power, which is transmitted through the coupling 404 to the worm gear elevator 405. The worm gear elevator 405 converts the rotational force into vertical up and down motion. When any point of the lifting ball and socket contacts the bottom of the battery pack, the worm gear elevator 405 continues its upward movement. When all proximity sensors sense the bottom of the battery pack, the drive motor 403 stops, and the worm gear elevator 405 stops ascending. Because the battery pack bottom provides resistance, the lifting ball and socket rotate adaptively during the ascent, and the lifting stops when the support surface is completely flat.

[0040] The model of the proximity sensor switch can be Omron proximity sensor switch GX-118MLKB-P.

[0041] The sensing surface of the proximity sensor switch is lower than the support surface. The difference between the sensing surface of the proximity sensor switch and the support surface is less than 8 mm. Two proximity sensor switches are provided, and the two proximity sensor switches are symmetrically arranged on either side of the lifting ball socket. The proximity sensor switches may include a first proximity sensor switch 407 and a second proximity sensor switch 411.

[0042] The lifting ball and socket includes an upper flange 410 and a lower flange 409, which are detachably connected to form a bowl structure. The top of the upper flange 410 is provided with an outwardly extending extension ring, the underside of which is detachably connected to a support frame, which is detachably connected to the proximity sensor switch. The lower flange 409 includes two semi-annular flanges, which are arranged on the periphery of the ball head structure and detachably connected to the upper flange 410. The upper surface of the lifting ball and socket is planar and serves as the support surface, i.e., the upper surface of the upper flange.

[0043] The lifting ball socket is equipped with an oil filling port. Its upper end abuts the support surface, while its lower end abuts the inner cavity of the bowl structure. An annular oil guide groove is provided on the inner wall of the upper flange 410. A hemispherical groove is also provided on the upper flange. The inner cavity of the hemispherical groove also has an annular oil guide groove. The central axis of the annular guide groove coincides with the central axis of the oil filling port. The central axis of the oil filling port is perpendicular to the support surface. The oil filling port abuts the connection between the ball head structure and the bowl structure.

[0044] A blind hole for inserting the lifting shaft is provided at the bottom of the lifting ball rod 408 , and the lifting ball rod 408 is connected to the lifting shaft via a latch shaft 416 .

[0045] See also Figure 7 At least two slot-shaped recesses are provided along the length of the battery pack, with the gap between the two strip-shaped protrusions 201 forming a slot-shaped recess 202. The length of the slot-shaped recess is perpendicular to the length of the battery pack. At least one lifting ball socket is arranged along the length of the slot-shaped recess, and the lifting ball socket is embedded in the slot-shaped recess. The central axis of the power output shaft of the drive motor is parallel to the length of the slot-shaped recess 202 and perpendicular to the length of the battery pack. The central axis of the power output shaft of the drive motor is parallel to the extension and retraction direction of the telescopic fork on which the lifting support assembly 4 is mounted. The lifting support assembly 4 is mounted on the fork arm of the telescopic fork.

[0046] See also Figure 6In Embodiment 2, based on Embodiment 1, two lifting support assemblies 4 are provided, and the two lifting support assemblies 4 are respectively mounted on two telescopic forks 3 arranged side by side. The two lifting support assemblies 4 are respectively a first lifting support assembly 4 and a second lifting support assembly 4; the two telescopic forks 3 arranged side by side are respectively a first telescopic fork and a second telescopic fork; the distance from the end of the first telescopic fork to the first lifting support assembly 4 is different from the distance from the end of the second telescopic fork to the second lifting support assembly 4. A telescopic fork is disposed below each slot-shaped recess.

[0047] See also Figure 5 Specific embodiment 3, based on specific embodiment 1, four lifting support assemblies 4 are provided, and two of the four lifting support assemblies 4 are installed on the same telescopic fork 3. A telescopic fork is provided below each groove-shaped recess.

[0048] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A universal floating mechanism for supporting the bottom of a battery pack, characterized in that: It includes a lifting support assembly, which includes a fixed seat, a drive motor, a worm gear lifter, a lifting ball rod and a lifting ball socket; The driving motor and the worm gear elevator are installed on the fixed seat, the power output shaft of the driving motor is connected to the power input shaft of the worm gear elevator through a coupling, the lifting shaft of the worm gear elevator is installed with the lifting ball rod, the top of the lifting ball rod is provided with a ball head structure, and the lifting ball socket is provided with a ball bowl structure rotatably connected to the ball head structure; The support surface of the lifting ball socket is used to support the bottom of the battery pack; At least two proximity sensing switches arranged along the circumference and used to sense the bottom of the battery pack are installed on the outer wall of the lifting ball socket. The sensing direction of the proximity sensing switches is upward and perpendicular to the supporting surface of the lifting ball socket.

2. The universal floating mechanism for supporting the bottom of a battery pack according to claim 1, characterized in that: The sensing surface of the proximity sensing switch is lower than the supporting surface.

3. The universal floating mechanism for supporting the bottom of a battery pack according to claim 1, characterized in that: Two proximity sensing switches are provided, and the two proximity sensing switches are symmetrically arranged on both sides of the lifting ball socket.

4. The universal floating mechanism for supporting the bottom of a battery pack according to claim 1, characterized in that: The lifting ball socket includes an upper flange and a lower flange arranged above and below, and the upper flange and the lower flange are detachably connected to form the ball bowl structure; An outwardly extending extension ring is provided on the top of the upper flange, and a support frame is detachably connected to the lower side of the extension ring, and the support frame is detachably connected to the proximity sensing switch.

5. The universal floating mechanism for supporting the bottom of a battery pack according to claim 4, characterized in that: The lower flange includes two semi-annular flanges, which are arranged on the periphery of the spherical head structure and are detachably connected to the upper flange.

6. The universal floating mechanism for supporting the bottom of a battery pack according to claim 4, characterized in that: An oil filling port is provided on the lifting ball socket, the upper end of the oil filling port is connected to the support surface, and the lower end of the oil filling port is connected to the connection between the ball head structure and the ball bowl structure.

7. The universal floating mechanism for supporting the bottom of a battery pack according to claim 4, characterized in that: An annular oil guide groove is provided on the inner wall of the upper flange.

8. The universal floating mechanism for supporting the bottom of a battery pack according to claim 1, characterized in that: There are two lifting support assemblies, and the two lifting support assemblies are respectively installed on two telescopic forks arranged side by side.

9. The universal floating mechanism for supporting the bottom of a battery pack according to claim 1, characterized in that: There are four lifting support assemblies, and two of the four lifting support assemblies are installed on the same telescopic fork.

10. The universal floating mechanism for supporting the bottom of a battery pack according to claim 1, characterized in that: At least two groove-shaped recesses are provided in the length direction of the battery pack, and the groove-shaped recesses are formed by the gap between the two strip-shaped protrusions; The length direction of the battery pack is perpendicular to the length direction of the groove-shaped notch; At least one lifting ball socket is arranged along the length direction of the groove-shaped recess, and the lifting ball socket is embedded in the groove-shaped recess.

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