Battery pack locking device with lock catch and automobile

Abstract

The invention provides a battery pack locking device with a lock catch, the battery pack locking device with the lock catch is used for locking and fixing a battery pack on an automobile, the battery pack locking device with the lock catch comprises the lock catch fixed on the battery pack, a spring bolt arranged on the automobile, and a driving assembly arranged on the automobile and used for driving the spring bolt to move, the lock catch comprises a fastener body and a lifting guide wheel fixed to the fastener body, and the spring bolt is driven by the driving assembly to abut against the lifting guide wheel in the height direction so as to support the lock catch. According to the battery pack locking device with the lock catch, the lock catch and the lock tongue are arranged to be of a matched structure to fix the battery pack, the battery pack can be installed by lifting the battery pack, universality is high, and automation of loading and unloading of the battery pack is easy to achieve. By arranging the lifting guide wheel, friction to the spring bolt is reduced; and by arranging the elastic cushion, the influence of vibration can be reduced, and damping is improved.

Description

Technical Field

[0001] The invention relates to a battery pack locking device with a lock buckle and a car. Background Art

[0002] With the world's energy shortage and environmental protection requirements, gasoline and diesel-powered cars are subject to certain restrictions and impacts. Environmentally friendly and energy-saving electric vehicles have become an important branch of the automotive industry. Electric vehicles just meet the dual requirements of energy and environmental protection. The key component of electric vehicles is the battery. The reasonable layout and installation of the battery can provide greater power for electric vehicles. In existing electric vehicles, the battery is generally assembled into a battery frame, and the battery frame is fixed to the chassis of the electric vehicle.

[0003] Although electric vehicles have developed rapidly due to their energy-saving and environmentally friendly advantages, the energy density of on-board power batteries is not ideal, the driving range of electric vehicles on a single charge is short, and the charging time of the battery is too long, which seriously restricts the use and promotion of electric vehicles. Therefore, the rapid replacement technology of power batteries used in electric vehicles has also become a research hotspot in the new energy field.

[0004] Existing battery replacement technology requires the use of screws to fix the battery pack to the vehicle body, but because each manufacturer has different fixing methods and positions, there is no universal equipment that can meet the installation needs of all new energy batteries.

[0005] In view of this, it is necessary to improve the existing battery pack locking device with a lock buckle to solve the above problems. Summary of the invention

[0006] The object of the present invention is to provide a battery pack locking device with a lock buckle to solve the problem that the existing battery pack installation has poor versatility and is difficult to achieve automated installation.

[0007] To achieve the above-mentioned purpose, the present invention provides a battery pack locking device with a lock buckle, which is used to lock and fix the battery pack on a car. The battery pack locking device with a lock buckle includes a lock buckle fixed on the battery pack, a lock tongue arranged on the car, and a driving component arranged on the car to drive the lock tongue to move. The lock buckle includes a fastener body and a lifting guide wheel fixed on the fastener body. The lock tongue is driven by the driving component to abut against the lifting guide wheel in the height direction to support the lock buckle.

[0008] As a further improvement of the present invention, the lifting guide wheel includes a support roller and a rotating shaft coaxially arranged with the support roller, the rotating shaft is fixedly connected to the fastener body, and the support roller is rotatably arranged relative to the rotating shaft.

[0009] As a further improvement of the present invention, the number of the lifting guide wheels is two, the two lifting guide wheels have the same height in the vertical direction and are spaced apart in the horizontal direction.

[0010] As a further improvement of the present invention, the battery pack locking device with a lock buckle also includes an elastic pad arranged on the car, and when the lock tongue abuts against the lifting guide wheel in the height direction, the upper end of the lock buckle compresses the elastic pad.

[0011] As a further improvement of the present invention, the battery pack locking device with a lock buckle also includes a transition piece fixed to the car, and the transition piece is arranged above the elastic pad in the height direction and abuts against the elastic pad.

[0012] As a further improvement of the present invention, the lower surface of the transition piece is recessed upward to form a receiving groove, and the elastic pad is received in the receiving groove.

[0013] As a further improvement of the present invention, the lower surface of the transition piece is recessed upward to form a plurality of release grooves, and the elastic pad covers the plurality of release grooves in a horizontal direction.

[0014] As a further improvement of the present invention, the battery pack locking device with a lock buckle also includes a limit member, which is arranged below the elastic pad so that the elastic pad is abutted between the limit member and the transition member, and the limit member is formed with an exposed groove in the horizontal direction for the lock tongue to be inserted and abutted against the elastic pad.

[0015] As a further improvement of the present invention, there are multiple locking tongues and locking buckles, and the same transition piece is correspondingly provided for the multiple locking tongues. Each locking tongue is correspondingly provided with two limiting pieces, and the two limiting pieces are spaced apart to form an exposure groove.

[0016] As a further improvement of the present invention, there are multiple lock tongues and lock buckles, each lock tongue is correspondingly provided with two limit members and one transition plate, the two limit members are spaced apart to form an exposure groove, and the limit members and the transition plate are integrally formed.

[0017] As a further improvement of the present invention, the battery pack locking device with a lock includes a fixed plate fixed on the battery pack, a first baffle plate arranged below the lock tongue, and a second baffle plate spaced apart from the fixed plate, the lock buckle is fixed on the fixed plate and / or the first baffle plate and / or the second baffle plate, and the first baffle plate is fixedly connected to the lower ends of the fixed plate and the second baffle plate.

[0018] As a further improvement of the present invention, the battery pack locking device with a lock buckle includes a limiting wheel fixed to the vehicle, the axial direction of the limiting wheel is the same as the moving direction of the locking tongue, and when the locking tongue abuts against the lock buckle, the limiting wheel abuts against the first baffle in the horizontal direction.

[0019] The present invention also provides a car, comprising a battery pack and the battery pack locking device with a lock as described above.

[0020] The beneficial effects of the present invention are as follows: the battery pack locking device with a lock buckle of the present invention is provided with a matching structure of the lock buckle and the lock tongue to fix the battery pack, and the battery pack can be installed by lifting the battery pack, which has strong versatility and is easy to realize the automation of battery pack unloading and unloading. By providing a lifting guide wheel, the friction on the lock tongue is reduced; by providing an elastic pad, the influence of vibration can be reduced and the damping can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of a battery pack locking device with a lock buckle and a battery pack according to Embodiment 1 of the present invention;

[0022] Figure 2 yes Figure 1 A schematic diagram of the side structure in which the power source and the second baffle are removed;

[0023] Figure 3 yes Figure 1 A schematic diagram of the structure of a battery pack locking device with a lock buckle and a battery pack fixing part;

[0024] Figure 4 yes Figure 1 A schematic diagram of the structure of a battery pack locking device with a lock buckle and a vehicle fixing part;

[0025] Figure 5 yes Figure 4 A schematic diagram of the structure of the middle transition piece, the elastic pad, the limit piece and the lock tongue;

[0026] Figure 6 yes Figure 5 A schematic diagram of the enlarged structure of the middle area A;

[0027] Figure 7 Figure 1 A schematic diagram of the side cross-section of the structure;

[0028] Figure 8 yes Figure 7 A schematic diagram of the enlarged structure of the middle area B;

[0029] Fig. 9 yes Figure 1 Schematic diagram of the three-dimensional structure of the middle lock;

[0030] Fig.10 yes Figure 1 A schematic diagram of the three-dimensional structure of the middle lock tongue;

[0031] Fig.11 is a schematic diagram of the overall structure of a battery pack locking device with a lock buckle and a battery pack according to Embodiment 2 of the present invention;

[0032] Fig.12 is a schematic diagram of a top view of a battery pack locking device with a lock buckle and a battery pack according to a second embodiment of the present invention;

[0033] Fig.13 yes Fig.11 A schematic diagram of the side cross-section of the structure;

[0034] Fig.14 yes Fig.13 Schematic diagram of the enlarged structure of the middle area C;

[0035] Fig.15 yes Fig.11 Schematic diagram of the three-dimensional structure of the middle lock tongue. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0039] like Figures 1 to 15 As shown, the automobile of the present invention includes a battery pack and a battery pack locking device having a lock buckle.

[0040] The battery pack locking device 100 with a lock buckle of the present invention is used to lock and fix the battery pack 200 on a car. The car here refers to a new energy car with the battery pack 200 as the main power.

[0041] The battery pack locking device 100 with a lock includes a lock 1 fixed on the battery pack 200, a lock tongue 2 arranged on the vehicle, a driving component 3 arranged on the vehicle to drive the lock tongue 2 to move, an elastic pad 4 arranged on the vehicle, a transition piece 5 fixed on the vehicle, a limiting piece 6 fixed on the vehicle, a fixing plate 7 fixed on the battery pack 200, a first baffle 8 arranged below the lock tongue 2, a second baffle 9 spaced apart from the fixing plate 7, a power source frame 10, and a limiting wheel 101 fixed to the vehicle.

[0042] In this embodiment, the number of the lock buckles 1 is multiple, and the multiple lock buckles 1 are arranged on both sides of the battery pack 200 along the left and right directions. The forward and backward directions of the car are the front-to-back directions. In some embodiments, the lock buckle 1 structure can also be arranged in the front-to-back direction of the battery pack 200, and the driving assembly 3 and the lock tongue 2 are correspondingly arranged on the car.

[0043] like Figure 3As shown, the lock buckle 1 is fixed on the fixed plate 7 and / or the first baffle 8 and / or the second baffle 9, and the first baffle 8 is fixedly connected to the lower ends of the fixed plate 7 and the second baffle 9. In this embodiment, the fixed plate 7, the first baffle 8 and the second baffle 9 are U-shaped and have an upward opening. The lock buckle 1 is located in the formed U-shaped space. The first baffle 8, the second baffle 9 and the fixed plate 7 can protect the lock buckle 1 from below and from the side to prevent rain, snow, dust and the like from polluting the battery pack locking device 100 with the lock buckle, and to prevent the battery pack 200 from being unable to be disassembled and installed due to problems such as icing. In addition, in order to ensure sealing, a blocking cover 91 can also be provided along the front and rear ends of the U-shape, and the blocking cover 91 is integrally formed with the first baffle 8 and the second baffle 9 or fixedly connected.

[0044] The fixing plate 7 plays a major supporting role. In this embodiment, the fixing plate 7 is fixed on the battery pack 200 , the lock buckle 1 is fixed on the fixing plate 7 , the first baffle plate 8 is directly fixed on the fixing plate 7 , and the second baffle plate 9 is indirectly fixed on the fixing plate 7 through the first baffle plate 8 .

[0045] The axial direction of the limiting wheel 101 is the same as the moving direction of the locking tongue 2. When the locking tongue 2 abuts against the lock buckle 1, the limiting wheel 101 abuts against the fixing plate 7 in the horizontal direction. The limiting wheel 101 can limit the movement of the battery pack 200 in the left and right directions. Of course, two limiting wheels 101 can be set in the left and right directions to abut against the fixing plate 7 and the second baffle plate 9 respectively, and the diameter of the limiting wheel 101 can be increased so that one limiting wheel 101 can abut against the fixing plate 7 and the second baffle plate 9, which can better prevent the problem of left and right shaking.

[0046] like Fig. 9 As shown, the lock buckle 1 includes a fastener body 11 and a lifting guide wheel 12 fixed on the fastener body 11, and the locking tongue 2 is driven by the driving assembly 3 to abut against the lifting guide wheel 12 along the height direction to support the lock buckle 1.

[0047] The lifting guide wheel 12 includes a support roller 121 and a rotating shaft 122 coaxially arranged with the support roller 121. The rotating shaft 122 is fixedly connected to the buckle body 11, and the support roller 121 is rotatable relative to the rotating shaft 122. When the lock buckle 1 and the lock tongue 2 are in contact, the support roller 121 contacts the lock tongue 2, thereby reducing friction and increasing the life of the lock buckle 1.

[0048] In some embodiments, there are two lifting guide wheels 12, which have the same height in the vertical direction and are spaced apart in the horizontal direction. The two lifting guide wheels 12 can provide stronger support strength.

[0049] like Fig.10 and Fig.15 As shown, the lock tongue 2 is driven by the driving assembly 3 to support the lock buckle 1 along the height direction. The lock tongue 2 includes a guide section 21, a lifting section 22 connected to the guide section 21, and a dead point section 23 connected to the lifting section 22. When the lock tongue 2 is plugged into the lock buckle 1, the guide section 21 is the section that is first inserted into the lifting hole.

[0050] The upper surfaces of the guide section 21 and the lifting section 22 are inclined relative to the horizontal direction. The end of the guide section 21 that moves toward the lock buckle 1 is lower and is mainly used for guiding to prevent the lock tongue 2 from being too high and hitting the lock buckle 1 in the horizontal direction, causing damage.

[0051] The angle between the upper surface of the guide section 21 and the horizontal plane is greater than the angle between the upper surface of the lifting section 22 and the horizontal plane. The lifting section 22 mainly serves to lift the lock buckle 1 and absorb the height deviation.

[0052] Furthermore, the angle between the upper surface of the guide section 21 and the horizontal plane is 15-25 degrees, and the angle between the upper surface of the lifting section 22 and the horizontal plane is 3-5 degrees.

[0053] In this embodiment, the angle between the upper surface of the guide section 21 and the horizontal plane is 20 degrees, and the angle between the upper surface of the lifting section 22 and the horizontal plane is 4 degrees. The smaller inclination angle of the upper surface of the lifting section 22 allows a smaller distance to be moved in the height direction.

[0054] The length of the lifting section 22 in the horizontal direction is smaller than the length of the guide section 21 in the horizontal direction. The reason for such a setting is also to reduce the lifting height of the lock buckle 1 in the vertical direction, and at the same time increase the lifting force in the height direction through the lever principle to reduce the power of the driving assembly 3.

[0055] The upper surface of the dead point section 23 is parallel to the horizontal plane. The dead point section 23 abuts against the lifting guide wheel 12 of the lock buckle 1 to prevent the lock buckle 1 from moving up and down. At this time, the elastic pad 4 reaches a large compression deformation, and the dead point section 23 can further reduce the impact of vibration.

[0056] When the dead point section 23 of the locking tongue 2 abuts against the lock buckle 1 along the height direction, the upper end of the lock buckle 1 compresses the elastic pad 4 .

[0057] The guide section 21 has a large slope and a high drop, and is used to lift the battery pack 200 and absorb the position difference in the height direction; the lifting section 22 is used to compress the elastic pad 4 to increase the locking force in the vertical direction, and the height of the lifting section 22 is less than the extrudable height of the elastic pad 4; the dead point section 23 is used to keep the battery pack 200 in a locked state.

[0058] To ensure the fastening effect of the battery pack 200 during driving, that is, the battery pack 200 and the car can fit stably, the maximum static friction force after the two are fitted together needs to be greater than the inertia force that the car may give (including bumps, braking, impact, etc.); according to relevant standards, the maximum inertia force is twice the weight of the battery pack, that is, f=2g, where f is the inertia force and g is the weight of the battery pack 200.

[0059] Under the action of the component force F2 (horizontal component) of the external force F (driving force of the lock tongue 2), the elastic pad 4 generates an extrusion force T (T=F2* / tanα), where α is the inclination angle of the lifting section 22, then T*μ>f (twice the weight of the battery pack, i.e. 2g), where μ is the friction coefficient between the lock tongue 2 and the elastic pad 4.

[0060] In order to reduce T (and thus reduce F2, making F much larger than F2, and ensuring to a greater extent that the locking block can enter the dead point section 23), the value of μ can be increased. The μ between iron parts is about 0.1-0.12, while the μ between rubber and rigid parts is 0.6-0.8, and the elastic pad 4 is extruded in the stroke direction through the extrusion force, and the elastic pad 4 acts on the fit between the battery pack and the car.

[0061] In addition, T=F2* / tanα, the angle of α is small, thereby achieving the effect of increasing the force. This is also the reason why the extrusion force surface, i.e. the lifting section 22, has a small slope and a small vertical displacement.

[0062] To ensure that the locking tongue 2 reaches the dead point holding surface, the external force F>F2 (the force T provided by the elastic pad 4). Therefore, if under the action of F, the backlog of the elastic pad 4>the extrusion amount of the elastic pad 4, then under the action of the external force F, the locking tongue 2 can definitely reach the dead point section 23 by extruding the elastic pad 4.

[0063] The thickness of the elastic pad 4 is greater than the height difference of the upper surface of the lifting section 22 in the vertical direction. The lock buckle 1 presses the elastic pad 4 so that the lock buckle 1 is tightly clamped between the elastic pad 4 and the lock tongue 2. The elastic pad 4 can weaken the alternating stress of the lock buckle 1, absorb a certain impact, have a certain energy storage effect, reduce the impact of the vibration of the car during driving on the battery pack locking device 100 with the lock buckle, and prevent the connection structure from breaking. In this embodiment, the elastic pad 4 is made of rubber material. And after being worn out after repeated use, it is only necessary to replace the elastic pad 4 without replacing other structures.

[0064] The transition piece 5 is arranged above the elastic pad 4 in the height direction and abuts against the elastic pad 4. The stopper 6 is arranged below the elastic pad 4 so that the elastic pad 4 abuts between the stopper 6 and the transition piece 5.

[0065] The lifting guide wheel 12 and the dead point section 23 finally abut against each other at a certain position, and the distance between the position and the lifting section 22 in the horizontal direction is L0. The lock buckle 1 and the limiter 6 are arranged at intervals in the horizontal direction, and the distance between the lock buckle 1 and any section of the limiter 6 in the horizontal direction is less than L0. Preferably, the distance between the lock buckle 1 and the two ends of the limiter 6 is s / 2, and s / 2<L0. The purpose of this setting is to assume that in the extreme case, the inertia force of the vehicle is greater than the maximum static friction between the battery pack 200 and the vehicle, so that the battery pack has a certain relative displacement. At this time, the gap between the lock buckle 1 and the limiter 6 will be eaten up, and the limiter 6 will play a role in limiting the lock buckle 1. The movable distance of the lock buckle 1 in the limiter 6 is set to s, and the distance moved toward one end is s / 2. In this way, as long as s / 2<L0, the lifting guide wheel 12 will not leave the dead point section 23 and enter the lifting section 22.

[0066] The lower surface of the transition piece 5 is recessed upward to form a receiving groove 51, and the elastic pad 4 is received in the receiving groove 51. The four corners of the receiving groove 51 form process notches 52, and the process notches 52 are semicircular, which can facilitate the processing of the receiving groove 51 on the one hand, and prevent interference with the corners of the elastic pad 4 on the other hand.

[0067] The lower surface of the transition piece 5 is recessed upward to form a plurality of release grooves 53, and the elastic pad 4 covers the plurality of release grooves 53 in the horizontal direction. The release grooves 53 facilitate the deformation of the elastic pad 4 to leave enough deformation space. In some embodiments, the release grooves 53 may be formed in the receiving grooves 51, and in other embodiments, the receiving grooves 51 may not be provided, and only the release grooves 53 may be formed.

[0068] The limiting member 6 is formed with an exposed groove 62 along the horizontal direction for the locking tongue 2 to be inserted into and abut against the elastic pad 4 .

[0069] The driving assembly 3 includes a connecting plate 31 fixedly connected to the plurality of locking tongues 2, and a power source 32 for driving the connecting plate 31 to move in a horizontal direction. The power source 32 is arranged on the outer side of the locking tongue 2 away from the battery pack 200, and the power source frame 10 is used to place the power source 32. The power source frame 10 shields the front, back, left, right and bottom sides of the power source 32 to prevent the power source 32 from being polluted by rain, snow, dust and the like. In addition, the power source 32 is arranged on a side of the second baffle plate 9 away from the fixed plate 7, and a clearance groove 82 is provided on the second baffle plate 9 for inserting the driving member of the power source 32. Specifically, the power source 32 is arranged in two sets, which respectively drive the plurality of locking tongues 2 on one side of the battery pack 200.

[0070] The power source 32 is an electric push rod, which draws power from the car. Two sets of control elements of the electric push rod 32 are arranged on the car. The movement of the electric push rod is controlled by the car or an external part connected to the car. Generally, a 12V voltage power supply is configured on a car, and a 24V power supply is configured on a heavy truck. The power supply is independent of the battery pack 200. Even if the battery pack 200 is detached, the electric push rod can still be driven independently to complete the locking or unlocking action, that is, to complete the separation or tightening of the battery pack.

[0071] In this embodiment, the following two embodiments are provided for different transition pieces 5 , limiting pieces 6 and driving assemblies 3 .

[0072] Embodiment 1:

[0073] like Figures 1 to 10 As shown, in this embodiment, the number of the locking tongue 2 and the lock buckle 1 is multiple, and the multiple locking tongues 2 are correspondingly provided with the same transition piece 5, that is, the locking tongue 2 on one side is correspondingly provided with only one transition piece 5, and each locking tongue 2 is correspondingly provided with two limiting pieces 6, and the two limiting pieces 6 are arranged at intervals to form an exposure groove 62. The transition piece 5 is directly fixed on the automobile, and the transition piece 5 protrudes downward to be provided with a positioning shaft 54, and the first baffle 8 is provided with a positioning hole 81 for matching with the positioning shaft 54, and the matching of the positioning shaft 54 ​​and the positioning hole 81 makes it easier to dock during installation.

[0074] In this embodiment, the connecting plate 31 is arranged on the side of the locking tongue 2 away from the battery pack 200, the limiting member 6 protrudes toward the side away from the battery pack 200 and is provided with a guide wheel 61, and the connecting plate 31 is provided with a guide groove 311 arranged along the front-to-back direction, and when the locking tongue 2 is plugged into the lock buckle 1, the guide groove 311 slides relative to the guide wheel 61.

[0075] The locking tongue 2 includes a locking tongue body 24 and a locking tongue block 25 connecting the locking tongue body 24 and the connecting plate 31 , wherein the locking tongue block 25 extends in a horizontal direction.

[0076] In this embodiment, the guide wheel 61 and the connecting plate 31 are arranged on the side, and only occupy the space on the side, so that the height of the supporting structure can be reduced in the vertical direction.

[0077] Embodiment 2:

[0078] like Figures 11 to 15 As shown, in this embodiment, the number of the locking tongue 2 and the locking buckle 1 is multiple, and each locking tongue 2 is correspondingly provided with two limiting members 6 and one transition plate, and the two limiting members 6 are arranged at intervals to form an exposure groove 62, and the limiting members 6 and the transition member 5 are integrally formed. In addition, in this embodiment, the battery pack locking device with a locking buckle 100 further includes a mounting plate 102, which is fixed on the car and fixedly connected to the multiple transition members 5.

[0079] The connecting plate 31 is arranged above the transition piece 5, and the transition piece 5 is provided with a guide block 55 protruding upward. The connecting plate 31 is provided with a guide groove 312 arranged along the front-back direction. When the lock tongue 2 is plugged and matched with the lock buckle 1, the guide groove 312 slides relative to the guide block 55. Further, the guide block 55 is fixedly connected to the mounting plate 102.

[0080] The locking tongue 2 includes a locking tongue body 24 and a locking tongue block 25 connecting the locking tongue body 24 and the connecting plate 31 , wherein the locking tongue block 25 extends in a height direction.

[0081] The connecting plate 31 includes a plurality of connecting blocks 313 fixedly connected in a horizontal direction, and each of the connecting blocks 313 is provided with a guide groove 312 .

[0082] In this embodiment, the guide block 55 and the connecting plate 31 are arranged at the top, occupying only the height space, and the width of the supporting structure can be reduced in the horizontal direction.

[0083] The above two embodiments can achieve the effect of one power source 32 driving the movement of multiple locking tongues 2, thereby reducing costs.

[0084] In addition, in some embodiments, a vertical safety valve can be added. When unlocking is required, the safety valve must be opened vertically by external force. The safety valve is in a downward pressure state by default under the action of spring force. When swapping batteries, the battery swapping car pushes open the safety valve when it rises, and the car can be locked or unlocked. Without this action, it cannot be unlocked or locked in place.

[0085] The battery pack locking device 100 with a lock buckle of the present invention is used as follows: when installing the battery pack 200, a trolley with a lifting function is used to lift the battery pack 200 to the assembly position. At this time, the top of the lock buckle 1 just contacts the elastic pad 4, and the driving assembly 3 works to drive the lock tongue 2 to move in the front-to-back direction. The guide section 21 is first inserted under the lock buckle 1, and the lock tongue 2 continues to move. The lifting section 22 contacts the lifting guide wheel 12 and continues to move the lock tongue 2. While the lifting section 22 moves, it drives the lifting guide wheel 12 to rise, and then drives the lock buckle 1 to move upward as a whole and squeeze the elastic pad 4. When the dead point section 23 abuts against the lifting guide wheel 12, the elastic pad 4 reaches the maximum deformation, and the lock buckle 1 is clamped between the lock tongue 2 and the transition plate, and it is difficult to shake, and the installation of the battery pack 200 is completed. Removing the battery pack 200 is the reverse operation of the above steps, which will not be described here.

[0086] The battery pack locking device 100 with a lock buckle of the present invention is configured with a matching structure of a lock buckle 1 and a lock tongue 2 to fix the battery pack 200. The battery pack 200 can be installed by lifting the battery pack 200. It has strong versatility and is easy to automate the loading and unloading of the battery pack 200. By providing a lock tongue 2 including a guide section 21, a lifting section 22 and a dead point section 23, the height deviation of the lock buckle 1 can be eliminated, the lifting can be performed with less effort, and the height direction can be locked. By providing a lifting guide wheel 12, the friction on the lock tongue 2 is reduced; by providing an elastic pad 4, the influence of vibration can be reduced and the damping can be improved. By providing a connecting plate 31, a power source 32 can drive the movement of multiple lock tongues 2 to reduce costs.

[0087] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0088] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A battery pack locking device with a lock buckle, used to lock and fix the battery pack on a car, characterized in that: The battery pack locking device with a lock includes a lock fixed on the battery pack, a lock tongue arranged on the vehicle, and a driving component arranged on the vehicle to drive the lock tongue to move. The lock includes a fastener body and a lifting guide wheel fixed on the fastener body. The lock tongue is driven by the driving component to abut against the lifting guide wheel along the height direction to support the lock.

2. The battery pack locking device with a lock buckle according to claim 1, characterized in that: The lifting guide wheel includes a supporting roller and a rotating shaft coaxially arranged with the supporting roller, the rotating shaft is fixedly connected to the fastener body, and the supporting roller is rotatably arranged relative to the rotating shaft.

3. The battery pack locking device with a lock buckle according to claim 1 or 2, characterized in that: The number of the lifting guide wheels is two, and the two lifting guide wheels have the same height in the vertical direction and are spaced apart in the horizontal direction.

4. The battery pack locking device with a lock buckle according to claim 1, characterized in that: The battery pack locking device with a lock buckle also includes an elastic pad arranged on the car, and when the lock tongue and the lifting guide wheel are abutted in the height direction, the upper end of the lock buckle compresses the elastic pad.

5. The battery pack locking device with a lock buckle according to claim 4, characterized in that: The battery pack locking device with a lock buckle also includes a transition piece fixed to the vehicle, wherein the transition piece is arranged above the elastic pad in the height direction and abuts against the elastic pad.

6. The battery pack locking device with a lock buckle according to claim 5, characterized in that: The lower surface of the transition piece is recessed upward to form a receiving groove, and the elastic pad is received in the receiving groove.

7. The battery pack locking device with a lock buckle according to claim 5 or 6, characterized in that: The lower surface of the transition piece is recessed upward to form a plurality of release grooves, and the elastic pad covers the plurality of release grooves in a horizontal direction.

8. The battery pack locking device with a lock buckle according to claim 5, characterized in that: The battery pack locking device with a lock buckle also includes a limiter, which is arranged below the elastic pad so that the elastic pad is abutted between the limiter and the transition piece, and the limiter is formed with an exposed groove in the horizontal direction for the lock tongue to be inserted and abutted against the elastic pad.

9. The battery pack locking device with a lock buckle according to claim 8, characterized in that: There are multiple locking tongues and lock buckles, and the same transition piece is correspondingly provided for the multiple locking tongues. Two limiting pieces are correspondingly provided for each locking tongue, and the two limiting pieces are spaced apart to form an exposure groove.

10. The battery pack locking device with a lock buckle according to claim 8, characterized in that: There are multiple locking tongues and lock buckles, and each locking tongue is correspondingly provided with two limiting members and one transition plate. The two limiting members are spaced apart to form an exposure groove, and the limiting member and the transition plate are integrally formed.

11. The battery pack locking device with a lock buckle according to claim 8, characterized in that: The lock buckle and the limiting member are arranged at intervals along the horizontal direction.

12. The battery pack locking device with a lock buckle according to claim 1, characterized in that: The battery pack locking device with a lock includes a fixed plate fixed on the battery pack, a first baffle plate arranged below the lock tongue, and a second baffle plate spaced apart from the fixed plate. The lock is fixed on the fixed plate and / or the first baffle plate and / or the second baffle plate, and the first baffle plate is fixedly connected to the lower ends of the fixed plate and the second baffle plate.

13. The battery pack locking device with a lock buckle according to claim 12, characterized in that: The battery pack locking device with a lock buckle includes a limiting wheel fixed to the car, the axial direction of the limiting wheel is the same as the moving direction of the locking tongue, and when the locking tongue abuts against the lock buckle, the limiting wheel abuts against the first baffle in the horizontal direction.

14. A car, characterized in that: The automobile comprises a battery pack and a battery pack locking device with a lock as described in any one of claims 1-13.

Images