Unlocking mechanism and battery replacement equipment

Abstract

The utility model provides an unlocking mechanism and battery replacement equipment. The unlocking mechanism comprises an unlocking rod, a connecting part and a driving part, the connecting part comprises a screw rod, a moving piece and a connecting piece; the moving part is in threaded connection with the screw rod, one end of the connecting part is rotatably connected to the moving part, and the other end of the connecting part is rotatably connected to the unlocking rod; the driving part is connected with the screw and used for controlling the screw to rotate around the axis of the screw, so that the connecting piece rotates and drives the unlocking rod to move in the vertical direction. The lifting of the unlocking rod is controlled by controlling the rotation of the screw rod, and the driving part does not need to be provided with a push rod structure like the prior art, so that the structure of the driving part is simplified, the space occupied by the driving part in the horizontal direction is reduced, the complexity and the maintenance cost of the unlocking mechanism are reduced, and the unlocking mechanism is more compact in structure and more convenient to use. And the space occupied by the unlocking mechanism in the horizontal direction of the battery replacement equipment is reduced. In addition, the control precision of the screw transmission mode is high, and the unlocking precision can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of electric automobile battery replacement, especially relates to a kind of unlocking mechanism and battery replacement equipment. BACKGROUND

[0002] With the development of society and the progress of science and technology, electric automobile is more and more popular with consumers, and the current electric automobile mainly includes direct charging type and quick replacement type.Quick replacement type needs to use battery replacement station to realize the quick replacement of battery pack, and the battery replacement equipment of battery replacement station can take out the depleted battery pack on the electric automobile and charge it in the charging room, and install the full battery pack in the charging room to the electric automobile.

[0003] In order to ensure the stability and safety of the battery pack during installation on the electric automobile, the battery pack and the electric automobile are generally locked by the locking mechanism arranged on the electric automobile.When the battery pack needs to be replaced, the unlocking mechanism on the battery replacement equipment is used to unlock the battery pack on the electric automobile, so as to take down the battery pack on the electric automobile.

[0004] Because the installation positions of the locking mechanisms on different electric automobiles are different, the distance between the locking mechanism on different electric automobiles and the unlocking mechanism of the same battery replacement equipment in the vertical direction is different.In order to make the same model of battery replacement equipment adapt to more battery replacement models, the unlocking rod of the unlocking mechanism is designed to be lifted and lowered in the vertical direction to adapt to the locking mechanism at different height positions.

[0005] In the prior art, one method of realizing the lifting and lowering of the unlocking rod is to hinge a rotatable connecting piece between the motor and the unlocking rod, the power output end of the motor is hinged with the connecting piece through a push rod, the motor controls the push rod to move in the horizontal direction, and then applies a force in the horizontal direction to the connecting piece, so that the connecting piece applies a force in the vertical direction to the unlocking rod, thereby realizing the lifting and lowering of the unlocking rod.However, this method of realizing the lifting and lowering of the unlocking rod occupies more space of the battery replacement equipment in the horizontal direction. UTILITY MODEL CONTENTS

[0006] The technical problem to be solved by the utility model is to overcome the defect that the structure for realizing the lifting and lowering of the unlocking rod in the prior art needs to occupy more space of the battery replacement equipment in the horizontal direction, and to provide an unlocking mechanism and battery replacement equipment.

[0007] The utility model solves the above technical problems by the following technical scheme:

[0008] An unlocking mechanism, the unlocking mechanism comprises an unlocking rod, a connecting part and a driving part;

[0009] The unlocking rod extends in the vertical direction, and the unlocking rod is used to unlock the locking mechanism for locking the battery pack.

[0010] The connecting part comprises a screw rod, a moving part and a connecting part; the screw rod extends along a first direction which is parallel to a horizontal plane; the moving part is threadedly connected with the screw rod; one end of the connecting part is rotatably connected with the moving part, and the other end of the connecting part is rotatably connected with the unlocking rod;

[0011] The driving part is connected with the screw rod and is used to control the rotation of the screw rod around its axis, so that the connecting part rotates and drives the unlocking rod to move along the vertical direction.

[0012] In this scheme, since the moving part is threadedly connected with the screw rod, when the driving part drives the screw rod to rotate, the moving part will move in the first direction relative to the screw rod, thereby causing the end of the connecting part connected with the moving part to rotate, so that the end of the connecting part connected with the unlocking rod also rotates. Since the position of the moving part in the vertical direction does not change under the condition that the length of the connecting part is constant, the connecting part will drive the unlocking rod to move along the vertical direction to unlock the locking mechanism of the battery pack. This scheme controls the lifting of the unlocking rod by controlling the rotation of the screw rod, and the driving part no longer needs to be provided with a push rod structure as in the prior art, thereby simplifying the structure of the driving part, reducing the space occupied by the driving part in the horizontal direction, reducing the complexity and maintenance cost of the unlocking mechanism, making the structure of the unlocking mechanism more compact, and reducing the space occupied by the unlocking mechanism in the horizontal direction of the battery swapping device. Moreover, the screw transmission has high control precision and large torque, which can improve the unlocking precision, the reliability and the usability of the unlocking mechanism.

[0013] Preferably, the connecting part further comprises a fixing part connected between the unlocking rod and the connecting part.

[0014] The screw rod has a first threaded section and a second threaded section along the first direction, and the threads of the first threaded section and the second threaded section are in opposite directions; the moving part comprises a first moving part and a second moving part, the first moving part is threadedly connected with the first threaded section, and the second moving part is threadedly connected with the second threaded section; the connecting part comprises a first connecting part and a second connecting part, the first connecting part is hingedly connected with the first moving part, the second connecting part is hingedly connected with the second moving part, and the first moving part and the second moving part are respectively rotatably connected with two ends of the fixing part in the first direction.

[0015] In the present solution, the first threaded section and the second threaded section are oppositely arranged, so that the first moving part connected to the first threaded section and the second moving part connected to the second threaded section can move towards or away from each other in the first direction when the screw rotates, and then the first connecting part connected to the first moving part and the second connecting part connected to the second moving part can be synchronously controlled to move the unlocking rod upwards or downwards, thereby ensuring the stability of the movement of the unlocking rod. The first moving part and the second moving part moving towards or away from each other in the first direction can also limit the movement of the unlocking rod in the horizontal direction, prevent the position deviation of the unlocking rod, and ensure the reliability of the unlocking.

[0016] Preferably, the unlocking mechanism satisfies one or more of the following conditions:

[0017] a. The first threaded section and the second threaded section have a gap in the first direction;

[0018] b. The pitch of the first threaded section and the pitch of the second threaded section are the same;

[0019] c. The first threaded section and the second threaded section are integrally formed;

[0020] d. The number of the first connecting parts is two, and the two first connecting parts are rotatably connected to the two ends of the fixed part in the second direction; wherein the second direction is perpendicular to the first direction in the horizontal plane;

[0021] e. The number of the second connecting parts is two, and the two second connecting parts are rotatably connected to the two ends of the fixed part in the second direction; wherein the second direction is perpendicular to the first direction in the horizontal plane;

[0022] f. The fixed part comprises a fixed part body and an extension part, the extension part is located on the side of the connecting part away from the center of the screw in the first direction, and the extension part extends from at least one side of the fixed part body towards the outside of the fixed part body in the second direction; wherein the second direction is perpendicular to the first direction in the horizontal plane;

[0023] When the unlocking rod moves to the unlocking position, the width direction of the connecting part is parallel to the first direction, and the side of the extension part in the first direction facing the side of the connecting part abuts against the side of the connecting part in the width direction.

[0024] In the scheme, the first threaded segment and the second threaded segment are arranged at intervals to prevent interference between the first moving part connected to the first threaded segment and the second moving part connected to the second threaded segment when moving towards each other, and to ensure structural reliability. The first threaded segment and the second threaded segment have the same pitch to ensure that the moving distances of the first moving part and the second moving part are the same, so that the first connecting part and the second connecting part control the moving distance of the unlocking lever in the vertical direction to be the same, prevent the unlocking lever from deviating, and improve the reliability of unlocking. The machining method of integrally forming the first threaded segment and the second threaded segment not only has a simple structure and is easy to process, but also can prevent the possibility of interference between the connecting structure of the two and the unlocking lever. Arranging one first connecting part and / or one second connecting part at each end of the fixing part in the second direction can provide greater support for the unlocking lever and make the unlocking lever move more smoothly. The extension part can further limit the movement of the moving part, prevent the first moving part and the second moving part from moving away from each other beyond the movement range, and ensure structural reliability.

[0025] Preferably, the unlocking mechanism further comprises a fixed support and a guide block, the screw rod is rotationally connected with the fixed support, and the guide block is connected with the unlocking lever and can move synchronously with the unlocking lever in the vertical direction.

[0026] The fixed support comprises two side plates arranged at intervals in the first direction, and at least one of the side plates is provided with a guide groove extending in the vertical direction, and the guide block is matched with the guide groove.

[0027] In the scheme, the movement of the unlocking lever in the vertical direction is guided by the cooperation of the guide block and the guide groove.

[0028] Preferably, the guide groove is closed at both ends in the vertical direction.

[0029] When the unlocking lever is located at the initial position, the guide block abuts against the lower groove wall of the guide groove.

[0030] When the unlocking lever is located at the unlocking position, the guide block abuts against the upper groove wall of the guide groove.

[0031] In the scheme, the upper and lower ends of the guide groove are used to limit the movement of the unlocking lever in the vertical direction, prevent the unlocking lever from moving beyond the movement range, and ensure structural reliability.

[0032] Preferably, the guide groove penetrates through both ends of the side plate in the first direction.

[0033] In the scheme, the above arrangement can reduce the cooperation accuracy of the guide block and the guide groove, reduce the processing and installation difficulty of the two, and improve the assembly efficiency.

[0034] Preferably, the guide block passes through the guide groove and is at least partially exposed outside the fixing support;

[0035] The unlocking mechanism further comprises a first origin sensor and a first arrival sensor, which are arranged in a vertical direction and used to detect the position of the part of the guide block exposed outside the fixing support in the vertical direction.

[0036] In this scheme, the first origin sensor and the first arrival sensor are installed outside the fixing support, which reduces the installation difficulty of the two sensors. Since the fixing support is internally provided with a screw rod, a moving piece, a connecting piece and other structures, the first origin sensor and the first arrival sensor detecting the part of the guide block exposed outside the fixing support can also reduce the possibility of misjudgment. The first origin sensor and the first arrival sensor are used to determine whether the unlocking rod returns to the initial position or moves to the unlocking position, thereby improving the unlocking accuracy.

[0037] Preferably, the fixing support further comprises a top plate connected between the two side plates; the top plate is provided with a through hole with both ends penetrating in the vertical direction, and the unlocking rod passes through the through hole.

[0038] In this scheme, the top plate connects the two side plates into a whole, thereby improving the strength of the fixing support. The cooperation of the through hole and the unlocking rod can further realize the movement guiding of the unlocking rod in the vertical direction, and the hole wall of the through hole can further prevent the unlocking rod from moving in the horizontal plane.

[0039] Preferably, the unlocking rod comprises an unlocking rod body and a base, the base is arranged at one end of the unlocking rod body in the vertical direction and faces the screw rod, the unlocking rod body passes through the through hole, and the outer diameter of the base is greater than the diameter of the through hole.

[0040] In this scheme, the cooperation of the base and the top plate can limit the excessive upward movement of the unlocking rod, thereby ensuring the structural reliability.

[0041] Preferably, the unlocking rod further comprises a connecting rod connected to one end of the base in the vertical direction and facing the screw rod; the fixing piece is provided with a connecting hole extending in the vertical direction, one end of the connecting hole away from the screw rod penetrates the fixing piece in the vertical direction, the connecting rod is connected to the connecting hole, and the base and the fixing piece abut at the end away from the screw rod in the vertical direction.

[0042] In this scheme, the base can also realize the connecting and positioning of the unlocking rod and the fixing piece, thereby improving the positioning accuracy and assembly efficiency of the two.

[0043] Preferably, the unlocking mechanism further comprises a second origin sensor and a second arrival sensor, the second origin sensor and the second arrival sensor are arranged in the first direction, and the second origin sensor and the second arrival sensor are used to detect the position of the moving part in the first direction.

[0044] In the scheme, the second origin sensor and the second arrival sensor are used to determine whether the unlocking rod returns to the initial position or moves to the unlocking position, thereby improving the unlocking accuracy.

[0045] A battery replacement device comprising the unlocking mechanism described above.

[0046] In the scheme, the battery replacement device is used to replace the battery pack on an electric vehicle.

[0047] The utility model discloses a positive progress effect lies in: the utility model discloses a screw rod rotation is controlled to control the lifting of unlocking rod, and the driving part does not need to set up the push rod structure like prior art again, simplifies the structure of driving part, reduces the space that driving part occupies in horizontal direction, reduces the complexity and maintenance cost of unlocking mechanism, makes the structure of unlocking mechanism more compact, reduces the space that unlocking mechanism occupies in the horizontal direction of battery replacement device. BRIEF DESCRIPTION OF DRAWINGS

[0048] Figure 1 It is the three-dimensional structure schematic diagram of battery replacement station of an embodiment of the utility model.

[0049] Figure 2 It is the three-dimensional structure schematic diagram of unlocking mechanism of an embodiment of the utility model.

[0050] Figure 3 It is another three-dimensional structure schematic diagram of unlocking mechanism of an embodiment of the utility model.

[0051] Figure 4 It is the side view structure schematic diagram of unlocking mechanism of an embodiment of the utility model.

[0052] Figure 5 It is the internal structure schematic diagram of unlocking mechanism of an embodiment of the utility model.

[0053] Figure 6 It is the three-dimensional structure schematic diagram of fixed support of an embodiment of the utility model.

[0054] Figure 7 It is the three-dimensional structure schematic diagram of unlocking rod of an embodiment of the utility model.

[0055] Figure 8The utility model discloses a stereoscopic structure schematic diagram of the fixing piece of one embodiment.

[0056] Mark explanation:

[0057] Unlocking rod 1

[0058] Unlocking rod body 11

[0059] Base 12

[0060] Connecting rod 13

[0061] Screw rod 2

[0062] First threaded section 21

[0063] Second threaded section 22

[0064] Moving piece 3

[0065] First moving piece 31

[0066] Second moving piece 32

[0067] Connecting piece 4

[0068] First connecting piece 41

[0069] Second connecting piece 42

[0070] Fixing piece 5

[0071] Fixing piece body 51

[0072] Extension 52

[0073] Connecting hole 53

[0074] Driving part 6

[0075] Fixing support 7

[0076] Top plate 71

[0077] Through hole 72

[0078] Side plate 73

[0079] Guide groove 74

[0080] Guide block 8

[0081] First original point sensor 91

[0082] First to place sensor 92

[0083] Unlocking mechanism 100 Specific implementation

[0084] The utility model discloses a stereoscopic structure schematic diagram of the fixing piece of one embodiment.

[0085] As shown in Figure 1 The present embodiment provides a battery replacement device for replacing battery packs on an electric vehicle. The battery replacement device comprises an unlocking mechanism 100 capable of unlocking the battery pack locked in the electric vehicle.

[0086] As shown in Figures 2-5 The unlocking mechanism 100 comprises an unlocking rod 1, a connecting part, a driving part 6 and a fixed support 7.

[0087] As shown in Figure 5 The unlocking rod 1 extends in the vertical direction (Z direction in Figure 3 The upper end of the unlocking rod 1 can act on the locking mechanism fixed on the electric vehicle to unlock the locking mechanism locking the battery pack.

[0088] As shown in Figures 2-5 The fixed support 7 comprises a top plate 71 and two side plates 73, the two side plates 73 are arranged in the first direction (X direction in Figure 3 The top plate 71 is arranged at the upper part of the side plates 73 and between the two side plates 73 in the first direction, and the two ends of the top plate 71 in the first direction are connected with the corresponding side plates 73 respectively to make the fixed support 7 connected as a whole and improve the strength of the fixed support 7.

[0089] As shown in Figure 5 and 6 The side plates 73 are fixed on the battery replacement device, the top plate 71 is provided with a through hole 72, the two ends of the through hole 72 in the vertical direction are penetrated, and the unlocking rod 1 passes through the through hole 72, so that the movement guide of the unlocking rod 1 in the vertical direction is realized through the cooperation of the through hole 72 and the unlocking rod 1, the offset of the unlocking rod 1 during movement is prevented, and the hole wall of the through hole 72 can prevent the unlocking rod 1 from moving in the horizontal plane.

[0090] In the present embodiment, the top plate 71 and the two side plates 73 are integrally formed by bending process, which is simple in structure and convenient to manufacture. In other alternative embodiments, the top plate 71 and the two side plates 73 can also be manufactured separately and spliced together.

[0091] As shown in Figures 2-5 The connecting part comprises a screw rod 2, a moving part 3 and a connecting part 4.

[0092] As shown in Figure 5As shown, the screw rod 2 extends along a first direction parallel to the horizontal plane, i.e. the axis of the screw rod 2 is parallel to the first direction, and the two ends of the screw rod 2 in the first direction are rotatably connected to the two side plates 73 of the fixed support 7 through bearing seats respectively. The driving part 6 in this embodiment is a rotary motor, one end of the screw rod 2 extends to the outside of the fixed support 7 and is connected to the power output end of the rotary motor, and the rotary motor drives the screw rod 2 to rotate around its axis.

[0093] As shown, Figures 2-5 The moving part 3 is provided with a threaded hole, and the moving part 3 is sleeved on the screw rod 2 through the threaded hole and is threadedly connected with the screw rod 2. When the rotary motor drives the screw rod 2 to rotate around its axis, the moving part 3 can move horizontally along the extension direction of the screw rod 2 (i.e. the first direction) under the action of the thread.

[0094] As shown, Figures 2-5 The first end of the connecting part 4 is rotatably connected to the moving part 3, and the second end of the connecting part 4 is rotatably connected to the unlocking rod 1. When the moving part 3 moves in the first direction relative to the screw rod 2, the connecting part 4 can rotate around the connection points of the connecting part 4 and the moving part 3 and the connection points of the connecting part 4 and the unlocking rod 1, because the unlocking rod 1 cannot move in the first direction. In the case where the length of the connecting part 4 is constant, since the position of the moving part 3 in the vertical direction does not change, the connecting part 4 will move the unlocking rod 1 in the vertical direction to unlock the locking mechanism of the locked battery pack.

[0095] This embodiment controls the lifting of the unlocking rod 1 by controlling the rotation of the screw rod 2, and the driving part 6 no longer needs to be provided with a push rod structure as in the prior art, thereby simplifying the structure of the driving part 6, reducing the space occupied by the driving part 6 in the horizontal direction, reducing the complexity and maintenance cost of the unlocking mechanism 100, making the structure of the unlocking mechanism 100 more compact, and reducing the space occupied by the unlocking mechanism 100 in the horizontal direction of the battery swapping device. Moreover, the transmission mode of the screw rod 2 has high control precision and large torque, which can improve the unlocking precision, the reliability and the availability of the unlocking mechanism 100.

[0096] Further, as shown, Figures 2-5 The connecting part further comprises a fixing part 5 connected between the unlocking rod 1 and the connecting part 4.

[0097] Specifically, as shown, Figure 5 and Figure 7 The unlocking rod 1 comprises an unlocking rod body 11, a base 12 and a connecting rod 13, the base 12 is connected to one end of the unlocking rod body 11 in the vertical direction towards the screw rod 2, and the connecting rod 13 is connected to one end of the base 12 in the vertical direction towards the screw rod 2.

[0098] As shown, Figure 5As shown, the unlocking lever body 11 passes through the through hole 72 and extends above the top plate 71, the diameter of the through hole 72 is slightly larger than the diameter of the unlocking lever body 11, so as to facilitate the movement of the unlocking lever body 11 in the vertical direction relative to the fixed support 7, and also to limit the movement of the unlocking lever body 11 in the horizontal direction through the hole wall of the through hole 72.

[0099] As shown in the figure, Figure 5 The fixed part 5 is arranged below the top plate 71, and the fixed part 5 is provided with a connecting hole 53 extending in the vertical direction. In this embodiment, the connecting hole 53 is through at both ends in the vertical direction, the connecting rod 13 extends into the connecting hole 53 and is connected with the connecting hole 53, and the lower end of the connecting rod 13 is preferably flush with the lower end of the connecting hole 53. In other alternative embodiments, the connecting hole 53 can also be designed to only pass through the fixed part 5 at the end (i.e. the upper end of the connecting hole 53) away from the screw rod 2 in the vertical direction, and the lower end of the connecting hole 53 is closed.

[0100] As shown in the figure, Figure 5 The base 12 is clamped between the top plate 71 and the fixed part 5 in the vertical direction, and the outer diameter of the base 12 is larger than the diameter of the through hole 72 and also larger than the diameter of the connecting hole 53. The base 12 and the fixed part 5 abut at the end away from the screw rod 2 in the vertical direction, so as to realize the connecting positioning of the unlocking lever 1 and the fixed part 5, and improve the positioning accuracy and assembly efficiency of the two. When the unlocking lever 1 moves upward to the upper limit position in the vertical direction, the base 12 can abut with the lower end surface of the top plate 71, so as to limit the excessive upward movement of the unlocking lever 1 through the cooperation of the two, and ensure the structural reliability.

[0101] In this embodiment, the connecting rod 13 is threadedly connected with the connecting hole 53. In other alternative embodiments, the unlocking lever 1 can also be connected with the fixed part 5 in other ways.

[0102] As shown in the figure, Figures 2-5 The screw rod 2 has a first threaded section 21 and a second threaded section 22 in the first direction, and the screw threads of the first threaded section 21 and the second threaded section 22 are opposite in rotation direction. The moving part 3 includes a first moving part 31 and a second moving part 32, the first moving part 31 is threadedly connected with the first threaded section 21, and the second moving part 32 is threadedly connected with the second threaded section 22. The connecting part 4 includes a first connecting part 41 and a second connecting part 42, the first connecting part 41 is hingedly connected with the first moving part 31, and the second connecting part 42 is hingedly connected with the second moving part 32. The first moving part 31 and the second moving part 32 are respectively rotatably connected to the two ends of the fixed part 5 in the first direction.

[0103] This embodiment uses two threaded sections, a first threaded section 21 and a second threaded section 22, with opposite screw directions. This allows the first moving member 31 connected to the first threaded section 21 and the second moving member 32 connected to the second threaded section 22 to move towards or away from each other in a first direction when the screw 2 rotates. This enables the first connecting member 41 connected to the first moving member 31 and the second connecting member 42 connected to the second moving member 32 to synchronously control the unlocking rod 1 to move upward or downward, ensuring the stability of the unlocking rod 1's movement. The opposite movement of the first moving member 31 and the second moving member 32 in the first direction also restricts the horizontal movement of the unlocking rod 1, preventing positional deviation and ensuring reliable unlocking.

[0104] In other alternative implementations, only one moving part 3 may be connected to the screw 2.

[0105] Furthermore, such as Figure 1 As shown, the first threaded section 21 and the second threaded section 22 have a gap in the first direction to prevent the first moving part 31 connected to the first threaded section 21 and the second moving part 32 connected to the second threaded section 22 from interfering with each other when they move towards each other, thus ensuring structural reliability.

[0106] Furthermore, the pitch of the first threaded section 21 is the same as the pitch of the second threaded section 22, thereby ensuring that the first moving part 31 and the second moving part 32 move the same distance in the first direction, so that the first connecting part 41 and the second connecting part 42 control the unlocking rod 1 to move the same distance in the vertical direction, preventing the unlocking rod 1 from deviating and improving the reliability of unlocking.

[0107] Furthermore, in this embodiment, the first threaded segment 21 and the second threaded segment 22 are integrally formed, that is, the first threaded segment 21 and the second threaded segment 22 are formed on a single rod. This forming method is not only simple in structure and easy to process, but also prevents the possibility of interference between the connection structure of the two and the unlocking rod 1.

[0108] Furthermore, such as Figures 2-4 As shown, in this embodiment, there are two first connectors 41 and two second connectors 42. The two first connectors 41 are rotatably connected to the fixing member 5 in the second direction. Figure 3The two second connecting members 42 are respectively rotatably connected to the two ends of the fixed member 5 in the second direction. The second direction is perpendicular to the first direction in the horizontal plane. In this embodiment, the first connecting member 41 and the second connecting member 42 are arranged at the two ends of the fixed member 5 in the second direction, which can provide greater support for the unlocking lever 1 and make the unlocking lever 1 move more stably. In other alternative embodiments, the first connecting member 41 and / or the second connecting member 42 can be arranged at only one side of the fixed member 5 in the second direction.

[0109] In other alternative embodiments, the fixed member 5 can not be arranged, and the second end of the connecting member 4 is directly hinged to the unlocking lever 1. The fixed member 5 is arranged in this embodiment because it is connected to multiple connecting members 4, which facilitates the connection between the multiple connecting members 4 and the unlocking lever 1.

[0110] Further, as shown in Figure 4 and Figure 8 , the fixed member 5 includes a fixed member body 51 and an extension 52, and the fixed member body 51 is hinged to the connecting member 4. The extension 52 is located on the side of the connecting member 4 away from the center of the screw rod 2 in the first direction, and the extension 52 extends from at least one side of the fixed member body 51 in the second direction towards the outside of the fixed member body 51. When the unlocking lever 1 moves to the unlocking position, the width direction of the connecting member 4 is parallel to the first direction, and the side of the extension 52 in the first direction abuts against the side of the connecting member 4 in the width direction to limit the first end of the connecting member 4 from following the movement of the moving member 3 to move further outward of the fixed support 7, thereby limiting the movement of the moving member 3 and preventing the first moving member 31 and the second moving member 32 from moving beyond the movement range when moving away from each other, and ensuring the structural reliability.

[0111] In this embodiment, the fixed member body 51 is provided with the extension 52 on both sides in the second direction because the fixed member 5 is provided with the connecting member 4 on both sides in the second direction. In other alternative embodiments, if the connecting member 4 is arranged on only one side of the fixed member 5 in the second direction, the extension 52 is arranged on the side of the fixed member body 51 where the connecting member 4 is connected.

[0112] Further, as shown in Figure 3 , Figure 6 and Figure 8 , the side plate 73 of the fixed support 7 is provided with a guide groove 74 extending in the vertical direction, and the unlocking mechanism 100 further includes a guide block 8 connected to the end of the fixed member 5 in the first direction. The guide block 8 is connected to the unlocking lever 1 through the fixed member 5 and can move synchronously with the unlocking lever 1 in the vertical direction. The guide block 8 cooperates with the guide groove 74, and the guide block 8 can slide along the extension direction of the guide groove 74, thereby guiding the movement of the unlocking lever 1 in the vertical direction.

[0113] In the embodiment, the two side plates 73 of the fixed support 7 are each provided with a guide groove 74, and the fixed part 5 is connected with a guide block 8 at each end in the first direction, and the guide block 8 is in sliding fit with the guide groove 74 of the corresponding side. In other alternative embodiments, the guide groove 74 can be provided on only one side plate 73, and the guide block 8 can be provided on the corresponding side of the fixed part 5.

[0114] In other alternative embodiments, the guide block 8 can be directly connected with the unlocking lever 1.

[0115] Further, as shown in Figure 3 and Figure 6 , the guide groove 74 is closed at both ends in the vertical direction. When the unlocking lever 1 is in the initial position, the guide block 8 abuts against the lower groove wall of the guide groove 74. When the unlocking lever 1 is in the unlocking position, the guide block 8 abuts against the upper groove wall of the guide groove 74. The upper and lower ends of the guide groove 74 are used to limit the movement of the unlocking lever 1 in the vertical direction, so as to prevent the unlocking lever 1 from moving beyond the movement range and ensure the structural reliability.

[0116] In other alternative embodiments, the guide groove 74 can only play a guiding role in the vertical direction.

[0117] Further, as shown in Figure 6 , the guide groove 74 penetrates through the two ends of the side plate 73 in the first direction, so as to reduce the matching precision of the guide block 8 and the guide groove 74, reduce the processing and installation difficulty of the two, and improve the assembly efficiency.

[0118] As shown in Figure 3 and Figure 4 , the guide block 8 penetrates through the guide groove 74 and is at least partially exposed to the fixed support 7. The unlocking mechanism 100 further comprises a first origin sensor 91 and a first arrival sensor 92, and the first origin sensor 91 and the first arrival sensor 92 are arranged in the vertical direction. The first origin sensor 91 and the first arrival sensor 92 are used to detect the position of the part of the guide block 8 exposed to the fixed support 7 in the vertical direction. The first origin sensor 91 is used to judge whether the unlocking lever 1 returns to the initial position, and the first arrival sensor 92 is used to judge whether the unlocking lever 1 moves to the unlocking position, so as to improve the unlocking accuracy.

[0119] In the embodiment, the first origin sensor 91 and the first arrival sensor 92 are installed in more space outside the fixed support 7, so as to reduce the installation difficulty of the two. Since the fixed support 7 is internally provided with a screw rod 2, a moving part 3, a connecting part 4 and various structures, the first origin sensor 91 and the first arrival sensor 92 detect the part of the guide block 8 exposed to the fixed support 7, which can also reduce the possibility of misjudgment.

[0120] The embodiment judges whether the unlocking lever 1 is moved to the position by directly measuring the moving distance of the unlocking lever 1 in the vertical direction. In other alternative embodiments, whether the unlocking lever 1 is moved to the position can also be judged by measuring the moving distance of the moving piece 3 in the first direction. For example, the unlocking mechanism 100 further comprises a second original point sensor and a second to position sensor, the second original point sensor and the second to position sensor are arranged along the first direction, and the second original point sensor and the second to position sensor are used for detecting the position of the moving piece 3 in the first direction. The second original point sensor is used for judging whether the unlocking lever 1 returns to the initial position, and the second to position sensor is used for judging whether the unlocking lever 1 moves to the unlocking position, so as to improve the unlocking accuracy.

[0121] The working principle of the unlocking lever lifting is briefly described below according to the specific structure of the unlocking mechanism 100 in the above.

[0122] When the unlocking lever 1 is controlled to rise, the rotary motor drives the screw rod 2 to rotate around the axis thereof, so that the first moving piece 31 and the second moving piece 32 which are threadedly connected with the screw rod 2 move in the first direction towards the direction away from each other. In this process, the first connecting piece 41 and the second connecting piece 42 rotate, converting the horizontal movement of the first moving piece 31 and the second moving piece 32 into the movement of the unlocking lever 1 in the vertical direction, and controlling the unlocking lever 1 to move upwards in the vertical direction.

[0123] When the unlocking lever 1 is controlled to rise, the rotary motor drives the screw rod 2 to rotate around the axis thereof, so that the first moving piece 31 and the second moving piece 32 which are threadedly connected with the screw rod 2 move in the first direction towards the direction away from each other. In this process, the first connecting piece 41 and the second connecting piece 42 rotate, converting the horizontal movement of the first moving piece 31 and the second moving piece 32 into the movement of the unlocking lever 1 in the vertical direction, and controlling the unlocking lever 1 to move upwards in the vertical direction.

[0124] In the description of the utility model, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the normal use of the device or element, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation at any time, unless otherwise stated in the text.

[0125] Although the specific embodiments of the present application are described above, those skilled in the art should understand that this is only an example, the protection scope of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present application, but these changes and modifications all fall within the protection scope of the present application.

Claims

1. An unlocking mechanism, characterized by, The unlocking mechanism comprises an unlocking rod, a connecting part and a driving part; The unlocking rod extends in a vertical direction and is used for unlocking a locking mechanism of the locked battery pack; The connecting part comprises a screw rod, a moving part and a connecting piece; the screw rod extends in a first direction, which is parallel to a horizontal plane; the moving part is threadedly connected with the screw rod; one end of the connecting piece is rotatably connected with the moving part, and the other end of the connecting piece is rotatably connected with the unlocking rod; The driving part is connected with the screw rod and is used for controlling the screw rod to rotate around its axis, so that the connecting piece rotates and drives the unlocking rod to move in the vertical direction.

2. The unlocking mechanism of claim 1, wherein, The connecting part further comprises a fixing part connected between the unlocking rod and the connecting piece; The screw rod has a first threaded section and a second threaded section in the first direction, the screw threads of the first threaded section and the second threaded section are opposite in rotation direction; the moving part comprises a first moving part and a second moving part, the first moving part is threadedly connected with the first threaded section, and the second moving part is threadedly connected with the second threaded section; the connecting piece comprises a first connecting piece and a second connecting piece, the first connecting piece is hingedly connected with the first moving part, and the second connecting piece is hingedly connected with the second moving part; the first moving part and the second moving part are respectively rotatably connected to two ends of the fixing part in the first direction.

3. The unlocking mechanism of claim 2, wherein, The unlocking mechanism satisfies one or more of the following conditions: a. The first threaded section and the second threaded section have a gap in the first direction; b. The pitch of the first threaded section and the pitch of the second threaded section are the same; c. The first threaded section and the second threaded section are integrally formed; d. The number of the first connecting pieces is two, and the two first connecting pieces are respectively rotatably connected to two ends of the fixing part in a second direction; wherein the second direction is perpendicular to the first direction in the horizontal plane; e. The number of the second connecting pieces is two, and the two second connecting pieces are respectively rotatably connected to two ends of the fixing part in a second direction; wherein the second direction is perpendicular to the first direction in the horizontal plane; f. The fixing part comprises a fixing part body and an extension part, the extension part is located on the side of the connecting piece away from the center of the screw rod in the first direction, and the extension part extends from at least one side of the fixing part body in the second direction towards the outside of the fixing part body; wherein the second direction is perpendicular to the first direction in the horizontal plane; When the unlocking rod moves to an unlocking position, the width direction of the connecting piece is parallel to the first direction, and one side surface of the extension part in the first direction abuts against one side surface of the connecting piece in the width direction.

4. The unlocking mechanism of claim 2, wherein, The unlocking mechanism further comprises a fixed support and a guide block, the screw rod is rotationally connected with the fixed support, and the guide block is connected with the unlocking rod and can synchronously move with the unlocking rod in the vertical direction; The fixing support comprises two side plates spaced apart along a first direction, at least one of the side plates is provided with a guide slot extending along a vertical direction, and the guide block is matched with the guide slot.

5. The unlocking mechanism of claim 4, wherein, Both ends of the guide slot in the vertical direction are closed. When the unlocking lever is in the initial position, the guide block abuts against a lower slot wall of the guide slot. When the unlocking lever is in the unlocking position, the guide block abuts against an upper slot wall of the guide slot.

6. The unlocking mechanism of claim 5, wherein, The guide slot penetrates through both ends of the side plate in the first direction.

7. The unlocking mechanism of claim 6, wherein, The guide block penetrates through the guide slot and is at least partially exposed outside the fixing support. The unlocking mechanism further comprises a first origin sensor and a first arrival sensor, the first origin sensor and the first arrival sensor are spaced apart along a vertical direction, and the first origin sensor and the first arrival sensor are used to detect the position of the part of the guide block exposed outside the fixing support in the vertical direction.

8. The unlocking mechanism of claim 4, wherein, The fixing support further comprises a top plate connected between the two side plates, the top plate is provided with a through hole penetrating through both ends of the through hole in the vertical direction, and the unlocking lever penetrates through the through hole.

9. The unlocking mechanism of claim 8, wherein, The unlocking lever comprises an unlocking lever body and a base, the base is arranged at one end of the unlocking lever body in the vertical direction facing the screw rod, the unlocking lever body penetrates through the through hole, and the outer diameter of the base is greater than the diameter of the through hole.

10. The unlocking mechanism of claim 9, wherein, The unlocking lever further comprises a connecting rod connected to one end of the base in the vertical direction facing the screw rod, the fixing member is provided with a connecting hole extending along the vertical direction, one end of the connecting hole in the vertical direction away from the screw rod penetrates through the fixing member, the connecting rod is connected with the connecting hole, and the base abuts against the end face of the fixing member in the vertical direction away from the screw rod.

11. The unlocking mechanism of claim 1, wherein, The unlocking mechanism further comprises a second origin sensor and a second arrival sensor, the second origin sensor and the second arrival sensor are spaced apart along the first direction, and the second origin sensor and the second arrival sensor are used to detect the position of the moving member in the first direction.

12. A battery replacement device, characterized by, The battery replacing device comprises the unlocking mechanism according to any one of claims 1-11.

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