Battery pack locking mechanism, battery pack and vehicle

Abstract

The invention relates to a battery pack locking mechanism, a battery pack and a vehicle, and belongs to the technical field of vehicle energy supplementation. The battery pack locking mechanism comprises a first mounting seat, a locking bolt, a connecting piece, a first locking piece and a second locking piece, the first mounting seat and the second locking piece are suitable for being connected with the vehicle body and the battery pack body respectively, the connecting piece is provided with a threaded hole, and the locking bolt penetrates through the threaded hole and is rotationally connected to the first mounting seat around a first axis; the first end of the first locking piece is rotationally connected to the first mounting base around a second axis, the second end of the first locking piece is matched with the connecting piece, the first locking piece is provided with a locking groove, the second locking piece is provided with a locking protrusion capable of stretching into the locking groove, and when the locking protrusion stretches into the locking groove, the battery pack locking mechanism is in a locking state. According to the locking device, the high strength and reliability can be achieved in the locking state, looseness is not likely to happen, the locking function can be achieved without large pre-tightening force, and meanwhile the long service life is achieved.

Description

Technical Field

[0001] The present disclosure relates to the field of vehicle energy replenishment technology, and in particular to a battery pack locking mechanism, a battery pack and a vehicle. Background Art

[0002] The energy replenishment methods of new energy vehicles can generally be divided into charging mode and battery replacement mode. The charging mode has problems such as "low car-to-pile ratio", "difficult charging" and "long charging time", and the fast charging technology has a large loss on the battery. Relatively speaking, the battery replacement mode can achieve rapid energy replenishment without affecting the battery life, with lower cost, higher efficiency and better safety. However, in the battery replacement mode, it is necessary to be able to quickly replace the battery pack. The locking mechanism must be used to quickly unlock the battery pack when the battery pack needs to be replaced, and the battery pack must be quickly locked after the battery pack is replaced.

[0003] However, most of the current battery swapping mechanisms have complex structures, mainly including bolt mechanisms or buckle mechanisms. Among them, the buckle mechanism has low strength and poor reliability, which is prone to loosening risks, while the bolt mechanism is prone to dust and impurities entering the bolt hole, resulting in a shortened service life of the battery swapping mechanism, and is prone to thread failure and deformation due to large pre-tightening force. Summary of the invention

[0004] In view of this, the embodiments of the present disclosure provide a battery pack locking mechanism, a battery pack and a vehicle, which can have high strength and reliability in the locked state, are not easy to loosen, and can achieve the locking function without a large pre-tightening force, and have a long service life. The technical solution is as follows:

[0005] In a first aspect, a battery pack locking mechanism is provided, the battery pack locking mechanism comprising a first mounting seat, a locking bolt, a connecting member, a first locking member and a second locking member, wherein the first mounting seat and the second locking member are adapted to be connected to a vehicle body and a battery pack body, respectively;

[0006] The connecting member has a threaded hole, and the locking bolt passes through the threaded hole and is rotatably connected to the first mounting seat around a first axis;

[0007] The first end of the first locking member is rotatably connected to the first mounting seat around the second axis, and the second end is matched with the connecting member, wherein the first axis is perpendicular to the second axis, and the first locking member has a locking groove;

[0008] The second locking member has a locking protrusion that can extend into the locking groove, and when the locking protrusion extends into the locking groove, the locking protrusion protrudes in a direction away from the first axis, so that the battery pack locking mechanism is in a locked state;

[0009] Wherein, the rotation of the locking bolt can cause the connecting member to move along the first axis, thereby causing the second end of the first locking member to rotate around the first end, thereby causing the locking protrusion to tend to extend into the locking groove or tend to disengage from the locking groove.

[0010] In a possible implementation, the second locking member includes two locking protrusions;

[0011] The first locking members and the second axis each include two members, the first ends of the two first locking members are respectively connected to the first mounting seat by rotation around one of the second axes, and the second ends are both matched with the connecting member, the two first locking members are respectively located on both sides of the symmetrical second locking member, and the two locking protrusions can respectively extend into a corresponding one of the locking grooves.

[0012] In a possible implementation, the connecting member is cylindrical, the threaded hole is perpendicular to the third axis of the connecting member, and the third axis is parallel to the second axis;

[0013] The second end of the first locking member has a limiting groove, and the limiting groove is used to be nested outside the arc-shaped surface of the connecting member.

[0014] In a possible implementation, the limiting groove is an arc-shaped groove, and the radius of the limiting groove is greater than the radius of the connecting member.

[0015] In a possible implementation, the second locking member further has a limiting slot, the locking protrusion protrudes in a direction away from the fourth axis of the limiting slot, and the inner diameter of the limiting slot is adapted to the diameter of the locking bolt, so that the locking bolt can extend into the limiting slot;

[0016] Among them, when the locking bolt extends into the limit slot, the rotation of the locking bolt can cause the connecting member to move along the first axis, thereby causing the second end of the first locking member to rotate around the first end, and then causing the locking protrusion to tend to extend into the locking slot or tend to disengage from the locking slot.

[0017] In a possible implementation, the battery pack locking mechanism further includes a second mounting seat, and the first mounting seat and the second mounting seat are suitable for being connected to the vehicle body and the battery pack body respectively;

[0018] The second mounting seat has a floating groove, the first end of the second locking member is assembled in the floating groove, and the second end is located outside the floating groove, wherein the limiting slot and the locking protrusion are located at the second end of the second locking member;

[0019] The first end of the second locking member can move in the floating slot along a first plane perpendicular to the fourth axis. In a possible implementation, the notch of the limiting slot has a chamfer.

[0020] In a possible implementation, the first mounting seat has a first side and a second side facing away from each other;

[0021] The first end of the first locking member is rotatably connected to the first side about a second axis;

[0022] The first end of the locking bolt passes from the second side to the first side and through the threaded hole, and the second end is located on the second side.

[0023] In a second aspect, a battery pack is provided, comprising a battery pack body and a battery pack locking mechanism as described in any one of the first aspects, wherein the first mounting seat and the second locking member are respectively connected to the battery pack body and the vehicle body.

[0024] In a third aspect, a vehicle is provided, characterized in that the vehicle includes a vehicle body, a battery pack body and a battery pack locking mechanism as described in any one of the first aspects, and the first mounting seat and the second locking member are respectively connected to the battery pack body and the vehicle body.

[0025] In the solution shown in the present disclosure, since the threaded hole of the connecting member is threadedly connected to the locking bolt, when the locking bolt is rotated, the connecting member can reciprocate along the first axis, thereby driving the second end of the first locking member and the locking groove on the first locking member to rotate around the second axis. And because the first mounting seat and the second locking member are respectively connected to the vehicle body and the battery pack body, when the battery pack body is located at the installation position of the vehicle body, the rotation of the locking groove around the second axis can make the locking groove of the first locking member approach or move away from the locking protrusion, so that the locking protrusion tends to extend into the locking groove or tends to leave the locking groove, thereby realizing the locking and unlocking of the battery pack body on the vehicle body.

[0026] Since the locking bolt and the connector are threadedly connected, the battery pack locking mechanism can have high strength and reliability in the locked state and is not easy to loosen. And with the cooperation of the locking groove and the locking protrusion, the locking function can be achieved without a large pre-tightening force. At the same time, since the locking bolt and the connector are always in a meshing state, the risk of deformation and jamming caused by dust and impurities entering the threaded hole can be avoided, so it has a long service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 is a structural schematic diagram of a battery pack locking mechanism provided by an embodiment of the present disclosure;

[0029] Figure 2 is a structural schematic diagram of a battery pack locking mechanism in a locked state provided by an embodiment of the present disclosure;

[0030] Figure 3 is a schematic cross-sectional structure diagram of a battery pack locking mechanism in a locked state provided by an embodiment of the present disclosure;

[0031] Figure 4 is a schematic diagram of an exploded structure of a battery pack locking mechanism provided by an embodiment of the present disclosure;

[0032] Figure 5 This is a schematic diagram of the structure of the first locking bolt extending into the limiting slot provided by the embodiment of the present disclosure;

[0033] Figure 6 It is a schematic diagram of the structure of the coordination between the positioning column and the positioning groove provided in the embodiment of the present disclosure;

[0034] Figure 7 It is a structural schematic diagram of a second locking bolt extending into a limiting slot provided by an embodiment of the present disclosure.

[0035] Description of Reference Numerals

[0036] 1. First mounting seat; 11. Mounting seat; 12. Second mounting hole; 2. Locking bolt; 21. First axis; 22. Power-assisted handle; 3. Connector; 31. Threaded hole; 32. Third axis; 4. First locking member; 41. Second axis; 42. Locking slot; 43. Limiting slot; 5. Second locking member; 51. Limiting slot; 511. Fourth axis; 512. Chamfer; 52. Locking protrusion; 6. Second mounting seat; 61. Floating slot; 62. Third mounting hole; 7. First mounting hole; 71. Rotating shaft; 8. Vehicle body; 81. First positioning structure; 9. Battery pack body; 91. Second positioning structure. DETAILED DESCRIPTION

[0037] In order to make the objectives, technical solutions and advantages of the present disclosure more clear, the embodiments of the present disclosure will be further described in detail below with reference to the accompanying drawings.

[0038] This embodiment relates to a battery pack locking mechanism, such as Figure 1 The figure shows the structural diagram of the battery pack locking mechanism. Figure 2 The figure shows the structure of the battery pack locking mechanism in the locked state. Figure 3 The figure shows a cross-sectional structure diagram of the battery pack locking mechanism in a locked state. Figure 4 The figure shows the exploded structure diagram of the battery pack locking mechanism. Figure 5 The figure shows a schematic diagram of the structure of the first locking bolt 2 extending into the limiting slot 51. Figure 6 The figure shows the structural diagram of the positioning column and the positioning groove. Figure 7 The figure shows a schematic structural diagram of a second locking bolt 2 extending into a limiting slot 51 .

[0039] refer to Figure 1 As shown, the battery pack locking mechanism includes a first mounting seat 1, a locking bolt 2, a connecting member 3, a first locking member 4 and a second locking member 5. The first mounting seat 1 and the second locking member 5 are suitable for connecting to the vehicle body 8 and the battery pack body 9 respectively.

[0040] For example, the first mounting seat 1 may be connected to the vehicle body 8, and the second locking member 5 may be connected to the battery pack body 9, or the second locking member 5 may be connected to the vehicle body 8, and the first mounting seat 1 may be connected to the battery pack body 9. Furthermore, the connection between the first mounting seat 1 and the second locking member 5 and the vehicle body 8 and the battery pack body 9 may be detachable or non-detachable.

[0041] refer to Figure 4 Combined with Figure 3 As shown, the connecting member 3 has a threaded hole 31, and the locking bolt 2 passes through the threaded hole 31 and is rotatably connected to the first mounting seat 1 around the first axis 21. At the same time, the first end of the first locking member 4 is rotatably connected to the first mounting seat 1 around the second axis 41, and the second end cooperates with the connecting member 3, wherein the first axis 21 is perpendicular to the second axis 41, and the first locking member 4 has a locking groove 42. Therefore, when the locking bolt 2 is rotated, the connecting member 3 can reciprocate along the first axis 21, and drive the second end of the first locking member 4 and the locking groove 42 on the first locking member 4 to rotate around the second axis 41.

[0042] Among them, reference Figure 4As shown, in order to enable the first end of the first locking member 4 to be rotatably connected to the first mounting seat 1 around the second axis 41, the battery pack locking mechanism may further include a rotating shaft 71, the first mounting seat 1 may have two pairs of fixed seats 11 arranged opposite to each other, the two pairs of fixed seats 11 and the first end of the first locking member 4 may have corresponding first mounting holes 7, the rotating shaft 71 sequentially passes through the first mounting hole 7 of a corresponding fixed seat 11, the first mounting hole 7 of the first locking member 4 and the first mounting hole 7 of another fixed seat 11, and the axis of the first mounting hole 7 is the second axis 41. Thus, the first end of the first locking member 4 can be rotatably connected to the first mounting seat 1 around the second axis 41.

[0043] refer to Figure 2 Combined with Figure 3 As shown, the second locking member 5 has a locking protrusion 52 that can extend into the locking groove 42, and when the locking protrusion 52 extends into the locking groove 42, the locking protrusion 52 protrudes in a direction away from the first axis 21, so that the battery pack locking mechanism is in a locked state. Figure 3 As shown, when the battery pack locking mechanism is in a locked state, the notch of the locking groove 42 faces the direction of the first axis 21 , so that the positions of the locking protrusion 52 and the locking groove 42 match each other, so that the locking protrusion 52 can extend into the locking groove 42 .

[0044] In which, when the battery pack body 9 is located at the installation position of the vehicle body 8, the rotation of the locking bolt 2 can cause the connecting member 3 to move along the first axis 21, causing the second end of the first locking member 4 to rotate around the first end, so that the locking protrusion 52 tends to extend into the locking groove 42 or tends to disengage from the locking groove 42.

[0045] From the above, it can be seen that since the threaded hole 31 of the connecting member 3 is threadedly connected to the locking bolt 2, when the locking bolt 2 is rotated, the connecting member 3 can move back and forth along the first axis 21, thereby driving the second end of the first locking member 4 and the locking groove 42 on the first locking member 4 to rotate around the second axis 41.

[0046] And because the first mounting seat 1 and the second locking member 5 are respectively connected to the vehicle body 8 and the battery pack body 9, when the battery pack body 9 is located at the installation position of the vehicle body 8, the rotation of the locking groove 42 around the second axis 41 can make the locking groove 42 of the first locking member 4 approach or move away from the locking protrusion 52, so that the locking protrusion 52 tends to extend into the locking groove 42 or tends to disengage from the locking groove 42, thereby realizing the locking and unlocking of the battery pack body 9 on the vehicle body 8.

[0047] In this way, when the battery pack of the vehicle needs to be replaced, the battery pack locking mechanism between the power-feeding battery pack body 9 and the vehicle body 8 can be unlocked first, and then the power-feeding battery pack body 9 can be removed from the installation position on the vehicle body 8. After that, the fully charged battery pack body 9 is placed on the installation position of the vehicle body 8, and then the battery pack locking mechanism between the fully charged battery pack body 9 and the vehicle body 8 is locked, and the battery pack of the vehicle can be replaced.

[0048] Since the locking bolt 2 and the connecting member 3 are threadedly connected, the battery pack locking mechanism can have high strength and reliability in the locked state and is not easy to loosen.

[0049] Furthermore, with the cooperation of the locking groove 42 and the locking protrusion 52 , the locking function can be achieved without a large pre-tightening force.

[0050] At the same time, since the locking bolt 2 and the connecting member 3 are always in a meshing state, the risk of deformation and jamming caused by dust and impurities entering the threaded hole can be avoided, and thus the service life is longer.

[0051] In one example, reference Figure 1 As shown, the locking protrusion 52 of the second locking member 5 includes two, for example, the second locking member 5 can be as follows Figure 1 In the T-shape shown, two symmetrical ends of the transverse section of the second locking member 5 may be two locking protrusions 52 .

[0052] The first locking member 4 and the second axis 41 each include two. The first ends of the two first locking members 4 are respectively connected to the first mounting seat 1 by rotation around the second axis 41, and the second ends are matched with the connecting member 3. The two first locking members 4 are respectively located on the symmetrical sides of the second locking member 5, and the two locking protrusions 52 can respectively extend into a corresponding locking groove 42.

[0053] For example Figure 4 As shown, the battery pack locking mechanism may include two rotating shafts 71, and the first mounting seat 1 may have two pairs of oppositely arranged fixing seats 11, and the two pairs of fixing seats 11 may be respectively located on both sides of the symmetry of the locking bolt 2. The two pairs of fixing seats 11 and the first ends of the first locking member 4 have corresponding first mounting holes 7, and the two rotating shafts 71 correspond to a first locking member 4 and a pair of fixing seats 11, respectively. The two rotating shafts 71 respectively pass through the first mounting hole 7 of a corresponding fixing seat 11, the first mounting hole 7 of the first locking member 4, and the first mounting hole 7 of another fixing seat 11 in sequence. Thus, the first ends of the two first locking members 4 are respectively rotatably connected to the first mounting seat 1 around a second axis 41.

[0054] When the locking bolt 2 is rotated, the second ends of the two first locking members 4 can be driven to rotate around the corresponding second axis 41 at the same time through the connecting member 3, so that the two locking grooves 42 can be close to the corresponding locking protrusions 52 respectively, so that the two locking protrusions 52 respectively extend into the corresponding locking grooves 42, and the symmetrical ends of the first locking members 4 are locked at the same time. Therefore, the stability of the battery pack locking mechanism in the locked state can be improved.

[0055] In one example, reference Figure 4 Combined with Figure 2 and Figure 3 As shown, the connecting member 3 is cylindrical, the threaded hole 31 is perpendicular to the third axis 32 of the connecting member 3, the third axis 32 is parallel to the second axis 41, and the second end of the first locking member 4 has a limiting groove 43, which is used to be nested outside the arc surface of the connecting member 3.

[0056] Since the limiting groove 43 is nested outside the arc surface of the connecting member 3, the connecting member 3 can be limited to rotate around the first axis 21, so when the locking bolt 2 is rotated, the connecting member 3 can move along the first axis 21. When the connecting member 3 moves along the first axis 21, the second end of the first locking member 4 can drive the first locking member 4 to rotate around the second axis 41, so that the locking protrusion 52 tends to extend into the locking groove 42 or tends to escape from the locking groove 42, thereby realizing the locking or unlocking of the battery pack locking mechanism.

[0057] In one example, the limiting groove 43 is an arc groove, and the radius of the limiting groove 43 is greater than the radius of the connecting member 3. For example, the radius of the connecting member 3 may be 3 mm, and the radius of the limiting groove 43 may be 3.5 mm. The radius of the connecting member 3 may be 4 mm, and the radius of the limiting groove 43 may be 4.6 mm. In this way, the arc surface of the connecting member 3 and the limiting groove 43 have a certain floating space, thereby preventing the rotational connection between the connecting member 3 and the first locking member 4 from being stuck due to the entry of dust and impurities, thereby affecting the service life.

[0058] In one example, the limiting groove 43 abuts against the connecting member 3 along the radial direction of the locking bolt 2 , so that when the locking bolt 2 is rotated, the connecting member 3 can be sensitively moved along the axial direction of the locking bolt 2 .

[0059] In one example, the second locking member 5 further has a limiting slot 51, and the locking protrusion 52 protrudes in a direction away from the fourth axis 511 of the limiting slot 51. Figure 3 As shown, the limiting slot 51 is located on a side opposite to the longitudinal section of the T-shaped second locking member 5 and between the two locking protrusions 52 .

[0060] The inner diameter of the limiting slot 51 is adapted to the diameter of the locking bolt 2, so that the locking bolt 2 can extend into the limiting slot 51. For example, the inner diameter of the limiting slot 51 is slightly larger than the diameter of the locking bolt 2, so that the limiting slot 51 and the locking bolt 2 are clearance-fitted.

[0061] Among them, when the locking bolt 2 extends into the limit slot 51, the rotation of the locking bolt 2 can cause the connecting member 3 to move along the first axis 21, thereby causing the second end of the first locking member 4 to rotate around the first end, and then causing the locking protrusion 52 to tend to extend into the locking groove 42 or tend to disengage from the locking groove 42.

[0062] From the above, when installing a fully charged battery pack body 9, the locking bolt 2 can be first inserted into the limiting slot 51, so that the battery pack body 9 can be pre-positioned. When the locking bolt 2 is rotated, the locking protrusion 52 can be accurately inserted into the locking groove 42, thereby realizing the locking of the battery pack replacement mechanism and improving the battery replacement efficiency.

[0063] In one example, the battery pack locking mechanism further includes a second mounting seat 6, and the first mounting seat 1 and the second mounting seat 6 are respectively adapted to be connected to the vehicle body 8 and the battery pack body 9. For example, the first mounting seat 1 may be fixedly connected to the vehicle body 8, and the second mounting seat 6 may be fixedly connected to the battery pack body 9; or the first mounting seat 1 may be fixedly connected to the battery pack body 9, and the second mounting seat 6 may be fixedly connected to the vehicle body 8.

[0064] The following takes the example in which the first mounting seat 1 is fixedly connected to the battery pack body 9 and the second mounting seat 6 is fixedly connected to the vehicle body 8 .

[0065] The battery pack locking mechanism may also include a first fixing member, which may be rod-shaped. The first mounting seat 1 and the frame of the battery pack body 9 both have a plurality of corresponding second mounting holes 12. For example, the first mounting seat 1 and the battery pack body 9 both have two corresponding second mounting holes 12. The first fixing members correspond one-to-one to the second mounting holes 12 of the first mounting seat 1, and each first fixing member passes through the corresponding second mounting hole 12 of the first mounting seat 1 and the second mounting hole 12 of the battery pack body 9 in sequence. Thus, the first mounting seat 1 is fixed to the battery pack body 9 by the first fixing member.

[0066] In one example, the first fixing member may be a bolt. For example, the nut of the bolt abuts against the first mounting seat 1, the second end of the bolt passes through the second mounting hole 12 of the first mounting seat 1 and the second mounting hole 12 of the battery pack body 9 in sequence, and the nut is screwed on the second end of the bolt and abuts against the frame of the battery pack body 9. Thus, the first mounting seat 1 is fixed to the battery pack body 9 through the first fixing member.

[0067] In another example, the first fixing member may be a pin having a pin cap at one end thereof, which abuts against the first mounting seat 1, and the second end of the pin passes through the second mounting hole 12 of the first mounting seat 1 and the second mounting hole 12 of the battery pack body 9 in sequence, and is riveted to the frame of the battery pack body 9.

[0068] In another example, the first fixing member may be a screw having a screw cap at one end thereof, which abuts against the frame of the battery pack body 9, and a second end of the screw passes through the second mounting hole 12 of the first mounting seat 1 and is screwed into the second mounting hole 12 of the battery pack body 9, wherein the second mounting hole 12 of the battery pack body 9 is a screw hole.

[0069] In one example, the battery pack locking mechanism may further include a second fixing member, which may be rod-shaped. The second mounting seat 6 and the vehicle body 8 both have a plurality of corresponding third mounting holes 62. For example, the second mounting seat 6 and the vehicle body 8 both have two corresponding third mounting holes 62. The second fixing member corresponds one-to-one to the third mounting hole 62 of the second mounting seat 6, and each second fixing member passes through the corresponding third mounting hole 62 of the second mounting seat 6 and the third mounting hole 62 of the vehicle body 8 in sequence. Thus, the second mounting seat 6 is fixed to the vehicle body 8 by the second fixing member. For example, the second fixing member may be a screw, a pin, or a bolt.

[0070] The second mounting seat 6 has a floating groove 61, the first end of the second locking member 5 is assembled in the floating groove 61, and the second end is located outside the floating groove 61, wherein the limiting slot 51 and the locking protrusion 52 are located at the second end of the second locking member 5, and the first end of the second locking member 5 can move in the floating groove 61 along a first plane perpendicular to the fourth axis 511.

[0071] Thus, even if there are some deviations caused by assembly errors or processing errors when the fully charged battery pack body 9 is placed in the installation position of the vehicle body 8, the first end of the second locking member 5 can be moved in the floating groove 61 along the first plane perpendicular to the fourth axis 511, so that the locking bolt 2 is aligned with the limiting slot 51 and the locking bolt 2 can be inserted into the limiting slot 51.

[0072] In one example, if Figure 5 As shown, the notch of the limiting slot 51 has a chamfer 512 , so that when the locking bolt 2 can be inserted into the limiting slot 51 , it can be guided by the chamfer 512 , which is conducive to quickly and accurately inserting the locking bolt 2 into the limiting slot 51 .

[0073] In one example, continue to refer to Figure 3As shown, the first mounting seat 1 has a first side and a second side that are separated from each other, and the first end of the first locking member 4 is connected to the first side by rotation around the second axis 41. For example, the fixing seat 11 can be located on the first side of the first mounting seat 1. The first end of the locking bolt 2 passes through the first side from the second side and passes through the threaded hole 31, and the second end is located on the second side. In this way, it is more convenient to rotate the locking bolt 2 through the second end of the locking bolt 2 without interference from other structural parts.

[0074] In one example, the second end of the locking bolt 2 has a power-assisting handle 22, and the locking bolt 2 can be rotated more effortlessly through the power-assisting handle 22. For example, the power-assisting handle 22 can be polygonal.

[0075] In one example, if Figure 3 As shown, the first locking member 4 can be a U-shaped block, the U-shaped opening of the U-shaped block is a locking groove 42, the bottom of the U-shaped block is the first end, which is rotatably connected to the first mounting seat 1, and a free end of the U-shaped block is the second end, which has a limiting groove 43 that cooperates with the connecting member 3.

[0076] In one example, the first mounting seat 1 is located below the second locking member 5. In order to allow the locking protrusion 52 to smoothly extend into or out of the locking groove 42, in the locked state, when the locking protrusion 52 extends into the locking groove 42, the upper surface of the locking protrusion 52 abuts against the inner wall of the locking groove 42, and the lower surface of the locking protrusion 52 has a gap. Therefore, when the first locking member 4 rotates around the second axis 41, it is possible to prevent interference between the movement path of the first locking member 4 and the locking protrusion 52, and under the action of the gravity of the battery pack body 9, sufficient friction can be generated between the second locking member 5 and the second mounting seat 6, and between the first locking member 4 and the second locking member 5, so that the second locking member 5 and the second mounting seat 6, and between the first locking member 4 and the second locking member 5 will not move along the first plane perpendicular to the first axis 21.

[0077] In order to avoid axial relative displacement between the first locking member 4 and the second locking member 5 caused by vibration.

[0078] In one example, reference Figure 6 As shown, the vehicle body 8 has a first positioning structure 81, and the battery pack body 9 has a second positioning structure 91. The first positioning structure 81 and the second positioning structure 91 can be one of a positioning groove and a positioning column respectively. Figure 6 As shown, the first positioning structure 81 is a positioning groove, and the second positioning structure 91 is a positioning column. However, it is also possible that the first positioning structure 81 is a positioning column, and the second positioning structure 91 is a positioning groove.

[0079] In this way, on the one hand, the battery pack body 9 can be assisted in positioning on the vehicle body 8 by the cooperation between the first positioning structure 81 and the second positioning structure 91; on the other hand, since the positioning column is against the bottom of the positioning groove, the battery pack body 9 and the vehicle body 8 cannot be closer, and the upper surface of the locking protrusion 52 is against the inner wall of the locking groove 42, so that the battery pack body 9 and the vehicle body 8 cannot be separated, thereby avoiding axial relative displacement between the first locking member 4 and the second locking member 5.

[0080] In another example, Figure 7 As shown, when the battery pack locking mechanism is in a locked state, the first end of the locking bolt 2 abuts against the second locking member 5, and since the upper surface of the locking protrusion 52 abuts against the inner wall of the locking groove 42, the battery pack body 9 and the vehicle body 8 can neither get closer nor farther away, thereby avoiding axial relative displacement between the first locking member 4 and the second locking member 5.

[0081] In the disclosed embodiment, since the threaded hole 31 of the connecting member 3 is threadedly connected to the locking bolt 2, when the locking bolt 2 is rotated, the connecting member 3 can reciprocate along the first axis 21, thereby driving the second end of the first locking member 4 and the locking groove 42 on the first locking member 4 to rotate around the second axis 41. And because the first mounting seat 1 and the second locking member 5 are connected to the vehicle body 8 and the battery pack body 9 respectively, when the battery pack body 9 is located at the installation position of the vehicle body 8, the rotation of the locking groove 42 around the second axis 41 can make the locking groove 42 of the first locking member 4 approach or move away from the locking protrusion 52, so that the locking protrusion 52 tends to extend into the locking groove 42 or tends to escape from the locking groove 42, thereby realizing the locking and unlocking of the battery pack body 9 on the vehicle body 8.

[0082] Since the locking bolt 2 and the connecting member 3 are threadedly connected, the battery pack locking mechanism can have high strength and reliability in the locked state and is not easy to loosen. And with the cooperation of the locking groove 42 and the locking protrusion 52, the locking function can be achieved without a large pre-tightening force. At the same time, since the locking bolt 2 and the connecting member 3 are always in a meshing state, the risk of deformation and jamming caused by dust and impurities entering the threaded hole can be avoided, so it has a long service life.

[0083] This embodiment also provides a battery pack, which includes a battery pack body 9 and a battery pack locking mechanism as described in any one of the first aspects, and the first mounting seat 1 and the second locking member 5 are respectively connected to the battery pack body 9 and the vehicle body 8.

[0084] In the disclosed embodiment, since the threaded hole 31 of the connecting member 3 of the battery pack locking mechanism is threadedly connected to the locking bolt 2, when the locking bolt 2 is rotated, the connecting member 3 can reciprocate along the first axis 21, thereby driving the second end of the first locking member 4 and the locking groove 42 on the first locking member 4 to rotate around the second axis 41. And because the first mounting seat 1 and the second locking member 5 are connected to the vehicle body 8 and the battery pack body 9 respectively, when the battery pack body 9 is located at the installation position of the vehicle body 8, the rotation of the locking groove 42 around the second axis 41 can make the locking groove 42 of the first locking member 4 approach or move away from the locking protrusion 52, so that the locking protrusion 52 tends to extend into the locking groove 42 or tends to escape from the locking groove 42, so as to achieve the locking and unlocking of the battery pack body 9 on the vehicle body 8.

[0085] Since the locking bolt 2 and the connecting member 3 are threadedly connected, the battery pack locking mechanism can have high strength and reliability in the locked state and is not easy to loosen. And with the cooperation of the locking groove 42 and the locking protrusion 52, the locking function can be achieved without a large pre-tightening force. At the same time, since the locking bolt 2 and the connecting member 3 are always in a meshing state, the risk of deformation and jamming caused by dust and impurities entering the threaded hole can be avoided, so it has a long service life.

[0086] This embodiment also provides a vehicle, which includes a vehicle body 8, a battery pack body 9 and a battery pack locking mechanism as described in any one of the first aspects, and the first mounting seat 1 and the second locking member 5 are respectively connected to the battery pack body 9 and the vehicle body 8.

[0087] In the disclosed embodiment, since the threaded hole 31 of the connecting member 3 of the battery pack locking mechanism is threadedly connected to the locking bolt 2, when the locking bolt 2 is rotated, the connecting member 3 can reciprocate along the first axis 21, thereby driving the second end of the first locking member 4 and the locking groove 42 on the first locking member 4 to rotate around the second axis 41. And because the first mounting seat 1 and the second locking member 5 are connected to the vehicle body 8 and the battery pack body 9 respectively, when the battery pack body 9 is located at the installation position of the vehicle body 8, the rotation of the locking groove 42 around the second axis 41 can make the locking groove 42 of the first locking member 4 approach or move away from the locking protrusion 52, so that the locking protrusion 52 tends to extend into the locking groove 42 or tends to escape from the locking groove 42, so as to achieve the locking and unlocking of the battery pack body 9 on the vehicle body 8.

[0088] Since the locking bolt 2 and the connecting member 3 are threadedly connected, the battery pack locking mechanism can have high strength and reliability in the locked state and is not easy to loosen. And with the cooperation of the locking groove 42 and the locking protrusion 52, the locking function can be achieved without a large pre-tightening force. At the same time, since the locking bolt 2 and the connecting member 3 are always in a meshing state, the risk of deformation and jamming caused by dust and impurities entering the threaded hole can be avoided, so it has a long service life.

[0089] It should be noted that the terms "first", "second", etc. in the specification and claims of the present disclosure are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present disclosure can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second", etc. are generally of the same type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0090] The above are only preferred embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure should be included in the protection scope of the present disclosure.

Claims

1. A battery pack locking mechanism, characterized in that: The battery pack locking mechanism comprises a first mounting seat (1), a locking bolt (2), a connecting member (3), a first locking member (4) and a second locking member (5), wherein the first mounting seat (1) and the second locking member (5) are suitable for being connected to a vehicle body (8) and a battery pack body (9) respectively; The connecting member (3) has a threaded hole (31), and the locking bolt (2) passes through the threaded hole (31) and is rotatably connected to the first mounting seat (1) around a first axis (21); The first end of the first locking member (4) is rotatably connected to the first mounting seat (1) around the second axis (41), and the second end is matched with the connecting member (3), wherein the first axis (21) is perpendicular to the second axis (41), and the first locking member (4) has a locking groove (42); The second locking member (5) has a locking protrusion (52) that can extend into the locking groove (42), and when the locking protrusion (52) extends into the locking groove (42), the locking protrusion (52) protrudes in a direction away from the first axis (21), so that the battery pack locking mechanism is in a locked state; The rotation of the locking bolt (2) can cause the connecting member (3) to move along the first axis (21), thereby causing the second end of the first locking member (4) to rotate around the first end, thereby causing the locking protrusion (52) to tend to extend into the locking groove (42) or tend to disengage from the locking groove (42).

2. The battery pack locking mechanism according to claim 1, characterized in that: The second locking member (5) includes two locking protrusions (52); The first locking member (4) and the second axis (41) each include two members, the first ends of the two first locking members (4) are respectively connected to the first mounting seat (1) by rotation around one of the second axis (41), and the second ends are respectively matched with the connecting member (3), the two first locking members (4) are respectively located on two symmetrical sides of the second locking member (5), and the two locking protrusions (52) can respectively extend into a corresponding one of the locking grooves (42).

3. The battery pack locking mechanism according to claim 1, characterized in that: The connecting member (3) is cylindrical, the threaded hole (31) is perpendicular to the third axis (32) of the connecting member (3), and the third axis (32) is parallel to the second axis (41); The second end of the first locking member (4) has a limiting groove (43), and the limiting groove (43) is used to be nested in the arc surface of the connecting member (3).

4. The battery pack locking mechanism according to claim 3, characterized in that: The limiting groove (43) is an arc-shaped groove, and the radius of the limiting groove (43) is greater than the radius of the connecting member (3).

5. The battery pack locking mechanism according to claim 1, characterized in that: The second locking member (5) further comprises a limiting slot (51), the locking protrusion (52) protrudes in a direction away from a fourth axis (511) of the limiting slot (51), and the inner diameter of the limiting slot (51) is adapted to the diameter of the locking bolt (2), so that the locking bolt (2) can extend into the limiting slot (51); When the locking bolt (2) extends into the limiting slot (51), the rotation of the locking bolt (2) can cause the connecting member (3) to move along the first axis (21), thereby causing the second end of the first locking member (4) to rotate around the first end, thereby causing the locking protrusion (52) to tend to extend into the locking slot (42) or tend to disengage from the locking slot (42).

6. The battery pack locking mechanism according to claim 5, characterized in that: The battery pack locking mechanism further comprises a second mounting seat (6), wherein the first mounting seat (1) and the second mounting seat (6) are suitable for being connected to a vehicle body (8) and a battery pack body (9) respectively; The second mounting seat (6) has a floating groove (61), the first end of the second locking member (5) is assembled in the floating groove (61), and the second end is located outside the floating groove (61), wherein the limiting slot (51) and the locking protrusion (52) are located at the second end of the second locking member (5); The first end of the second locking member (5) can move in the floating groove (61) along a first plane perpendicular to the fourth axis (511).

7. The battery pack locking mechanism according to claim 5, characterized in that: The notch of the limiting slot (51) has a chamfer (512).

8. The battery pack locking mechanism according to claim 1, characterized in that: The first mounting seat (1) has a first side and a second side facing away from each other; The first end of the first locking member (4) is rotatably connected to the first side around a second axis (41); The first end of the locking bolt (2) passes from the second side to the first side and through the threaded hole (31), and the second end is located on the second side.

9. A battery pack, characterized in that: The battery pack comprises a battery pack body (9) and a battery pack locking mechanism as claimed in any one of claims 1 to 8, wherein the first mounting seat (1) and the second locking member (5) are respectively connected to the battery pack body (9) and the vehicle body (8).

10. A vehicle, characterized in that: The vehicle comprises a vehicle body (8), a battery pack body (9) and a battery pack locking mechanism as claimed in any one of claims 1 to 8, wherein the first mounting seat (1) and the second locking member (5) are respectively connected to the battery pack body (9) and the vehicle body (8).

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