CN210129531U

CN210129531U - Locking device for battery pack

Info

Publication number: CN210129531U
Application number: CN201920989059.6U
Authority: CN
Inventors: 牟东; 肖申; 叶庆丰; 吴小平; 孙庆
Original assignee: Bozhon Precision Industry Technology Co Ltd
Current assignee: Bozhon Precision Industry Technology Co Ltd
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2020-03-06
Anticipated expiration: 2029-06-27

Abstract

The utility model provides a locking device for a battery pack, which comprises a locking mechanism body for rotationally locking the battery pack; the locking mechanism body comprises a locking rotating shaft, a locking pin, a limiting shell and a limiting piece; a rotating groove is formed in the side wall of the locking rotating shaft in the limiting shell; a first notch is formed in one side, close to the rotary power assembly, of the rotary groove; the limiting part of the limiting part enters and exits the rotating groove through the first gap; the limiting part moves between the first notch and the rotating groove, and when the limiting part is abutted against the first notch, the rotating shaft is locked; when the limiting part is positioned in the rotating groove, the locking rotating shaft can rotate, so that the locking pin can be unlocked or the battery pack can be locked. The utility model discloses the structure is ingenious, and reasonable in design simplifies the locking mode, need not to carry out too much processing to the locking pivot, effectively reduces the overall cost, and the locking mode is simple reliable simultaneously, satisfies the requirement that new forms of energy car trades the electricity fast, and the facilitate promotion is used.

Description

Locking device for battery pack

Technical Field

The utility model belongs to quick replacement battery field, concretely relates to a locking means for battery pack.

Background

With the increasingly widespread use of various new energy vehicles such as electric vehicles and hybrid vehicles, technologies related to the quick change of batteries and the like are becoming the subject of attention and research. Although various power exchanging modes such as screwing and locking or unlocking by adopting a screwing shaft of a screwing gun exist at present, although the performance is reliable and the control is flexible, the overall structure of the locking structure is relatively complex, the requirement on machining is high, and meanwhile, due to the adoption of a structural part contact scheme, the overall structural part is seriously abraded, the replacement frequency is high, and the overall cost is high.

Therefore, it is urgently needed to improve the existing locking mechanism, optimize the structural design of the locking mechanism and reduce the manufacturing difficulty and the manufacturing cost of the locking mechanism.

SUMMERY OF THE UTILITY MODEL

In order to overcome prior art not enough, the utility model provides a locking means for battery pack simplifies the locking mode, need not to carry out too much processing to the locking pivot, effectively reduces the overall cost, and the locking mode is simple reliable simultaneously, satisfies the requirement that new forms of energy car traded the electricity fast.

The utility model provides a locking device for a battery pack, which comprises a locking mechanism body for rotationally locking the battery pack; the locking mechanism body comprises a locking rotating shaft, a locking pin, a limiting shell and a limiting piece;

the locking pin is fixedly arranged at one end part of the locking rotating shaft in a penetrating way, and the other end of the locking rotating shaft is used for contacting a rotary power assembly;

the limiting part is partially or completely arranged in the limiting shell, and the locking rotating shaft penetrates through the limiting shell; a rotating groove is formed in the side wall of the locking rotating shaft in the limiting shell;

a first notch is formed in one side, close to the rotary power assembly, of the rotary groove; the limiting part of the limiting part enters and exits the rotating groove through the first gap;

the limiting part moves between the first notch and the rotating groove, and when the limiting part abuts against the first notch, the locking rotating shaft is locked; when the limiting part is positioned in the rotating groove, the locking rotating shaft can rotate, so that the locking pin unlocks or locks the battery pack.

Preferably, the limiting shell comprises a first shell and a second shell; the first shell and the second shell are matched with each other to form a whole; the first shell is provided with a first step surface; the first step face is abutted against a first shaft shoulder of the locking rotating shaft, the second shell is abutted against a second shaft shoulder of the locking rotating shaft, so that the locking rotating shaft is limited in a cavity formed by the first shell and the second shell.

Preferably, the first housing further comprises a first groove body and a second through groove; the second through groove is arranged on the outer surface of the limiting shell; the first groove body is communicated with the second groove body; the sectional area of the first groove body is larger than that of the second groove body; the limiting piece further comprises a push rod; the push rod is matched with the second through groove, so that the push rod moves in the second through groove; the limiting part is matched with the first groove body, so that the limiting part moves in the first groove body; a second notch is formed in the side, close to the locking rotating shaft, of the first groove body; when the locking rotating shaft is locked, the second notch is aligned with the first notch.

Preferably, when the locking rotating shaft is locked, the push rod protrudes out of the outer surface of the limiting shell.

Preferably, the locking mechanism body further includes a buffer plate; the buffer plate is sleeved on the outer wall of the locking rotating shaft and located between the limiting shell and the locking pin.

Preferably, the number of the limiting members is less than or equal to the number of the first notches.

Preferably, the locking mechanism body further comprises a check unit, and the check unit is used for providing an acting force for enabling the limiting part to return to the first notch.

Preferably, the check unit comprises two oppositely arranged magnets with the same polarity; one of the magnets is mounted on the inner wall of the limiting shell, and the other magnet is mounted on the limiting part.

Preferably, said check unit comprises elastic means; one end of the elastic device is abutted against the inner wall of the limiting shell, and the other end of the elastic device is abutted against the limiting part.

Preferably, the elastic means is a spring; the upper end surface of the limiting part is also provided with a convex part; the spring is sleeved outside the protruding part.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model provides a locking device for a battery pack, which comprises a locking mechanism body for rotationally locking the battery pack; the locking mechanism body comprises a locking rotating shaft, a locking pin, a limiting shell and a limiting piece; the locking pin is fixedly arranged at one end part of the locking rotating shaft in a penetrating way, and the other end of the locking rotating shaft is used for contacting the rotary power assembly; the limiting part is partially or completely arranged in the limiting shell, and the locking rotating shaft penetrates through the limiting shell; a rotating groove is formed in the side wall of the locking rotating shaft in the limiting shell; a first notch is formed in one side, close to the rotary power assembly, of the rotary groove; the limiting part of the limiting part enters and exits the rotating groove through the first gap; the limiting part moves between the first notch and the rotating groove, and when the limiting part is abutted against the first notch, the rotating shaft is locked; when the limiting part is positioned in the rotating groove, the locking rotating shaft can rotate, so that the locking pin can be unlocked or the battery pack can be locked. The utility model discloses the structure is ingenious, and reasonable in design simplifies the locking mode, need not to carry out too much processing to the locking pivot, effectively reduces the overall cost, and the locking mode is simple reliable simultaneously, satisfies the requirement that new forms of energy car trades the electricity fast, and the facilitate promotion is used.

The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings. The detailed description of the present invention is given by the following examples and the accompanying drawings.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without undue limitation to the invention. In the drawings:

fig. 1 is a schematic view of the overall structure of the locking mechanism body of the present invention;

fig. 2 is a schematic bottom structure view of the locking mechanism body according to an embodiment of the present invention;

fig. 3 is an exploded schematic view of a locking mechanism body according to an embodiment of the present invention;

fig. 4 is a schematic view of a partial structure of the embodiment of fig. 3;

fig. 5 is a schematic structural diagram of a limiting member and a stopping unit in the embodiment of fig. 3 according to the present invention;

fig. 6 is a schematic structural view of the locking rotating shaft of the present invention;

fig. 7 is a schematic view of a first housing structure according to an embodiment of the present invention;

fig. 8 is an exploded view of the locking mechanism body according to another embodiment of the present invention;

fig. 9 is a schematic partial structure diagram of the embodiment of fig. 8;

fig. 10 is a schematic structural view of a limiting member and a stopping unit in the embodiment of fig. 8 according to the present invention;

shown in the figure:

the locking mechanism comprises a locking mechanism body 670, a locking rotating shaft 671, a rotating groove 6711, a first notch 6712, a rotating connecting groove 6713, a first shaft shoulder 6714, a second shaft shoulder 6715, a locking pin 672, a first housing 673, a first step surface 6731, a first groove body 6732, a second groove body 6733, a second housing 674, a limiting piece 675, a push rod 6751, a limiting piece 6752, a protruding part 6753, a magnet 676, a spring 677 and a buffer plate 679.

Detailed Description

The foregoing and other objects, features, aspects and advantages of the present invention will become more apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses a more detailed description of the present invention, which will enable those skilled in the art to make and use the present invention. In the drawings, the shape and size may be exaggerated for clarity, and the same reference numerals will be used throughout the drawings to designate the same or similar components. In the following description, terms such as center, thickness, height, length, front, back, rear, left, right, top, bottom, upper, lower, and the like are used based on the orientation or positional relationship shown in the drawings. In particular, "height" corresponds to the dimension from top to bottom, "width" corresponds to the dimension from left to right, and "depth" corresponds to the dimension from front to back. These relative terms are for convenience of description and are not generally intended to require a particular orientation. Terms concerning attachments, coupling and the like (e.g., "connected" and "attached") refer to a relationship wherein structures are secured or attached, either directly or indirectly, to one another through intervening structures, as well as both movable or rigid attachments or relationships, unless expressly described otherwise.

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that any combination of the following embodiments or technical features can be used to form a new embodiment without conflict.

A locking device for a battery assembly, as shown in fig. 1-3, includes a locking mechanism body 670 for rotationally locking the battery assembly; the locking mechanism body 670 includes a locking rotation shaft 671, a locking pin 672, a limit housing, and a limit member 675;

the locking pin 672 is fixedly arranged at one end of the locking rotating shaft 671 in a penetrating manner, and the other end of the locking rotating shaft 671 is used for contacting the rotary power assembly; in the present embodiment, as shown in fig. 1, the locking shaft 671 and the locking pin 672 can be connected by screws, and it should be understood that the connection manner of the locking shaft 671 and the locking pin 672 includes, but is not limited to, key connection, pin connection, and welding.

The limiting piece 675 is partially or completely arranged in the limiting shell, and the locking rotating shaft 671 penetrates through the limiting shell; a rotary groove 6711 is formed in the side wall of the locking rotating shaft 671 positioned in the limiting shell;

a first notch 6712 is formed in one side, close to the rotary power assembly, of the rotary groove 6711; the limiting part 6752 of the limiting part 675 passes in and out of the rotating groove 6711 through the first notch 6712;

the limiting portion 6752 moves between the first notch 6712 and the rotating groove 6711, and when the limiting portion 6752 abuts against the first notch 6712, the locking shaft 671 is locked; when the position-limiting portion 6752 is located in the rotating groove 6711, the locking rotating shaft 671 can rotate, so that the locking pin 672 unlocks or locks the battery assembly.

In this embodiment, as shown in fig. 6, the second shoulder 6715 and the first shoulder 6714 are protruding portions of a step shaft of the locking shaft 671, a space sandwiched between the second shoulder 6715 and the first shoulder 6714 forms a rotating groove 6711, and a first notch 6712 is formed in the first shoulder 6714 on a side close to the rotating power assembly; in an embodiment, as shown in fig. 2, the limiting member 675 protrudes out of the surface of the first housing 673, the rotational power assembly abuts against the limiting member 675, so that the limiting member 675 moves toward the inside of the limiting housing as a whole, the limiting portion 6752 of the limiting member 675 gradually passes through the first notch 6712 and enters and exits the rotating groove 6711, after the limiting portion 6752 of the limiting member 675 completely disengages from the contact with the first notch 6712, the limiting portion 6752 is partially located in the rotating groove 6711, and the limiting portion 6752 disengages from the contact with the locking rotation shaft 671, so that the locking rotation shaft 671 is in a free rotation state, at this time, the rotational power assembly can transmit a rotational torque through the rotating connection groove 6713 of the locking rotation shaft 671, and transmit a rotational motion to the outside through the locking pin 672, thereby locking or unlocking the battery.

In one embodiment, the locking pin 672 rotates 90 ° to complete the locking or unlocking of the battery assembly and the vehicle body, and after the locking or unlocking is completed, the position-limiting member 675 returns by gravity, so that the position-limiting portion 6752 returns to the first notch 6712 again, the position-limiting portion 6752 collides with the first notch 6712, and the locking pin 672 cannot rotate at this time.

It should be understood that the number of the position-limiting members 675 is less than or equal to the number of the first notches 6712, and the number of the first notches 6712 is set according to the angle to be rotated for unlocking, for example, four first notches 6712 may be set and one or two or three or four position-limiting members 675 may be set. In the present embodiment, as shown in fig. 2, four limiting members 675 are rotationally symmetrically distributed around the locking rotation shaft 671 at 90 °, so as to form a uniform force around the locking rotation shaft 671, thereby preventing the limiting members 675 in a single direction from being unevenly stressed, which affects the overall reliability of the device.

In a preferred embodiment, as shown in fig. 3, the restraining housing comprises a first housing 673, a second housing 674; the first shell 673 and the second shell 674 are matched with each other to form a whole; the first housing 673 is provided with a first step surface 6731; the first step surface 6731 abuts against a first shaft shoulder 6714 of the locking rotating shaft 671, and the second housing 674 abuts against a second shaft shoulder 6715 of the locking rotating shaft 671, so that the locking rotating shaft 671 is limited in a cavity formed by the first housing 673 and the second housing 674. It should be understood that the first housing 673 and the second housing 674 are used to form a motion space of the limiting member 675, and any way of combining or splicing the first housing 673 or the second housing 674 in other ways also belongs to the protection scope of the present invention.

In a preferred embodiment, as shown in fig. 7, the first housing 673 further includes a first channel 6732, a second channel 6733; the second through groove 6733 is arranged on the outer surface of the limiting shell; the first tank body 6732 is communicated with the second tank body 6733; the sectional area of the first groove body 6732 is larger than that of the second groove body 6733; the stopper 675 further includes a push rod 6751; the push rod 6751 is engaged with the second through groove 6733 such that the push rod 6751 moves within the second through groove 6733; the stopper 6752 is engaged with the first groove body 6732 so that the stopper 6752 moves in the first groove body 6732; a second notch 6734 is formed in the side, close to the locking rotating shaft 671, of the first groove body 6732; when the locking shaft 671 is locked, the second notch 6734 is aligned with the first notch 6712. It should be understood that the first groove body 6732 is slightly larger than the outer contour of the position-limiting portion 6752, and when the locking rotating shaft 671 is locked, the first groove body 6732 and the first notch 6712 together form a clamping surface of the position-limiting portion 6752, so as to prevent the position-limiting portion 6752 from shaking and failing to lock due to a single-side force. It should also be understood that, in an embodiment, as shown in fig. 2 and 7, the second through slot 6733 is disposed on the end surface of the first housing 673, when the opening of the second through slot 6733 is slightly larger than the sectional area of the push rod 6751, the second through slot 6733 is in a circular hole shape; in another embodiment (not shown), the second through groove 6733 is disposed on a sidewall of the first housing 673, in which the second through groove 6733 is in a shape of a long hole, and the push rod 6751 reciprocates in the long hole along the axial direction of the locking rotating shaft 671 to unlock and lock the locking rotating shaft 671.

In a preferred embodiment, as shown in fig. 2, when the locking rotating shaft 671 is locked, the push rod 6751 protrudes out of the outer surface of the limit housing. The rotary power assembly can realize quick unlocking and locking of the rotating shaft 671 only by adopting a push rod 6751 which is in a plane structure and butts against the protruding limit shell of each limit piece 675; it should be understood that the push rod 6751 may also be disposed through the second through groove 6733 of the limiting housing, and the rotating power assembly may be, for example, a cylindrical structure to push the push rod 6751 of each limiting member 675 into the limiting housing, so as to achieve the quick unlocking and locking of the rotating shaft 671.

In a preferred embodiment, in order to improve the safety of the device and prevent the vehicle body or the device from being unnecessarily bumped, as shown in fig. 1-3 and 8, the locking mechanism body 670 further includes a buffer plate 679; the buffer plate 679 is sleeved on the outer wall of the locking rotating shaft 671 and is located between the limiting shell and the locking pin 672. The buffer plate 679 can be made of soft material, so as to effectively prevent the limit shell from contacting and colliding with the vehicle body.

In a preferred embodiment, to prevent the position-limiting member 675 from being unable to return due to gravity and improve the reliability of the device, the locking mechanism body 670 further includes a return unit for providing a force to return the position-limiting portion 6752 to the first notch 6712. Through the stopping unit, after the rotation of the locking rotating shaft 671 is realized, when the rotating power assembly is cancelled, the limiting part 6752 can return to the first notch 6712 quickly, and the locking of the locking rotating shaft 671 is realized.

As shown in fig. 4 and 5, in a preferred embodiment, the check unit includes two oppositely disposed magnets 676 with the same polarity; one magnet 676 is mounted on the inner wall of the limit casing, and the other magnet 676 is mounted on the limit part 6752. Through the effort that like poles repel each other, spacing portion 6752 receives repulsion of the magnet 676 of spacing casing inner wall installation all the time, breaks away from rotatory connecting groove 6713 after as the rotary power component, and spacing portion 6752 returns fast to first breach 6712 department under the effect of repulsion, realizes the quick automatic locking of locking pivot 671.

In another preferred embodiment, as shown in fig. 8, 9, the check unit comprises elastic means; one end of the elastic device is abutted against the inner wall of the limit shell, and the other end is abutted against the limit part 6752. Through the elastic restoring force of the elastic device, after the rotary power assembly is separated from the rotary connecting groove 6713, the limiting portion 6752 is quickly returned to the first notch 6712 under the action of the restoring force, and the locking rotating shaft 671 is also quickly and automatically locked. In this embodiment, as shown in fig. 10, the resilient means is a spring 677; the upper end surface of the limiting part 6752 is also provided with a convex part 6753; the spring 677 is sleeved outside the protruding portion 6753, so that the positioning and guiding of the spring are realized, the spring is effectively prevented from being misplaced or turned over in the locking process, and the reliability of the device is improved.

The utility model discloses the structure is ingenious, and reasonable in design simplifies the locking mode, need not to carry out too much processing to the locking pivot, effectively reduces the overall cost, and the locking mode is simple reliable simultaneously, satisfies the requirement that new forms of energy car trades the electricity fast, and the facilitate promotion is used.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way; the utility model can be smoothly implemented by the ordinary technicians in the industry according to the drawings and the above description; however, those skilled in the art should understand that changes, modifications and variations made by the above-described technology can be made without departing from the scope of the present invention, and all such changes, modifications and variations are equivalent embodiments of the present invention; meanwhile, any changes, modifications, evolutions, etc. of the above embodiments, which are equivalent to the actual techniques of the present invention, still belong to the protection scope of the technical solution of the present invention.

Claims

1. A locking device for a battery assembly includes a locking mechanism body (670) for rotationally locking the battery assembly; the method is characterized in that:

the locking mechanism body (670) comprises a locking rotating shaft (671), a locking pin (672), a limiting shell and a limiting piece (675);

the locking pin (672) is fixedly arranged at one end of the locking rotating shaft (671) in a penetrating manner, and the other end of the locking rotating shaft (671) is used for contacting a rotary power assembly;

the limiting piece (675) is partially or completely arranged in the limiting shell, and the locking rotating shaft (671) penetrates through the limiting shell; a rotating groove (6711) is formed in the side wall of the locking rotating shaft (671) in the limiting shell;

a first notch (6712) is formed in one side, close to the rotary power assembly, of the rotary tank (6711); a limiting part (6752) of the limiting part (675) enters and exits the rotating groove (6711) through the first notch (6712);

the limiting part (6752) moves between the first notch (6712) and the rotating groove (6711), and when the limiting part (6752) abuts against the first notch (6712), the locking rotating shaft (671) is locked; when the limiting part (6752) is positioned in the rotating groove (6711), the locking rotating shaft (671) can rotate, so that the locking pin (672) unlocks or locks the battery assembly.

2. The locking device for a battery pack according to claim 1, wherein: the limiting shell comprises a first shell (673) and a second shell (674); the first shell (673) and the second shell (674) are matched with each other to form a whole; the first housing (673) is provided with a first step surface (6731); the first step surface (6731) abuts against a first shaft shoulder (6714) of the locking rotating shaft (671), and the second shell (674) abuts against a second shaft shoulder (6715) of the locking rotating shaft (671), so that the locking rotating shaft (671) is limited in a cavity formed by the first shell (673) and the second shell (674).

3. The locking device for a battery pack according to claim 2, wherein: the first shell (673) also comprises a first groove body (6732) and a second through groove (6733); the second through groove (6733) is arranged on the outer surface of the limiting shell; the first groove body (6732) is communicated with the second through groove (6733); the sectional area of the first through groove body (6732) is larger than that of the second through groove body (6733); the stopper (675) further comprises a push rod (6751); the push rod (6751) is matched with the second through groove (6733) so that the push rod (6751) moves in the second through groove (6733); the limiting part (6752) is matched with the first groove body (6732) so that the limiting part (6752) moves in the first groove body (6732); a second notch (6734) is formed in the side, close to the locking rotating shaft (671), of the first groove body (6732); when the locking rotating shaft (671) is locked, the second notch (6734) is aligned with the first notch (6712).

4. A lock-out mechanism for a battery pack as claimed in claim 3, wherein: when the locking rotating shaft (671) is locked, the push rod (6751) protrudes out of the outer surface of the limiting shell.

5. The locking device for a battery pack according to claim 1, wherein: the locking mechanism body (670) further comprises a buffer plate (679); the buffer plate (679) is sleeved on the outer wall of the locking rotating shaft (671) and is positioned between the limiting shell and the locking pin (672).

6. The locking device for a battery pack according to claim 1, wherein: the number of the limiting pieces (675) is less than or equal to the number of the first notches (6712).

7. The lock-out mechanism for a battery pack according to any one of claims 1 to 6, wherein: the locking mechanism body (670) further comprises a check unit for providing an acting force for returning the limit portion (6752) to the first notch (6712).

8. The locking device for a battery pack according to claim 7, wherein: the check unit comprises two oppositely arranged magnets (676) with the same polarity; one magnet (676) is mounted on the inner wall of the limit shell, and the other magnet (676) is mounted on the limit part (6752).

9. The locking device for a battery pack according to claim 7, wherein: the check unit comprises an elastic device; one end of the elastic device props against the inner wall of the limiting shell, and the other end of the elastic device props against the limiting part (6752).

10. The locking device for a battery pack according to claim 9, wherein: the elastic device is a spring (677); the upper end surface of the limiting part (6752) is also provided with a convex part (6753); the spring (677) is sleeved outside the convex part (6753).