Locking device with emergency unlocking function and electric vehicle

Abstract

The invention relates to a locking device with an emergency unlocking function and an electric vehicle, the locking device comprises a wrapping and locking part arranged on a battery pack frame, a vehicle lock part arranged on a battery replacement vehicle body and an emergency unlocking assembly, the wrapping and locking part comprises a battery pack suspension part, and the battery pack suspension part is provided with a lock hole; the bicycle lock part comprises a driving part, a sliding seat and a fixed seat, the sliding seat is provided with a spring bolt used for penetrating through the lock hole, the driving part is detachably installed on the fixed seat, the output end of the driving part is detachably connected to the sliding seat, and the driving part pushes the sliding seat to slide relative to the fixed seat and drives the spring bolt to be inserted into or retreat from the lock hole, so that the locking or unlocking function is completed. Under the condition that the driving part breaks down or no power supply is input, the driving part is detached, the emergency unlocking assembly is installed on the fixed base and the sliding base, the mode that the driving part manually drives the fixed base and the sliding base to achieve relative displacement is replaced, and therefore the emergency unlocking function is achieved, and emergency replacement of the battery pack is completed.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle battery replacement, and more specifically to a locking device with an emergency unlocking function and an electric vehicle. Background Art

[0002] With the continuous development of battery swapping technology, the battery swapping method of electric heavy trucks has gradually evolved from rear-mounted battery swapping, where the battery pack is placed behind the cab and hoisted from above to the frame beam, to bottom-mounted battery swapping, where the battery pack is placed at the bottom of the frame beam and installed from below the frame to the frame beam. Bottom-mounted battery swapping has the advantages of a low center of gravity and the ability to configure a larger battery pack, and is gaining widespread attention from automakers.

[0003] At present, the bottom-mounted battery swapping of electric heavy trucks can be divided into two types according to the arrangement of the control device of the locking mechanism: station-end unlocking and vehicle-end unlocking. Station-end unlocking installs the device that drives and controls the locking and opening of the locking mechanism on the battery swap station. In addition to delivering the battery pack to the installation location of the electric heavy truck, the equipment of the battery swap station also needs to provide a drive device to drive the unlocking and contraction of the battery pack locking device. The most common one is a tightening gun. In order to meet the operating space requirements of the locking drive device, the battery swap station often needs to dig a deeper trench to install the locking drive device. This method of battery swap station equipment is complex and the construction cost of the battery swap station is high.

[0004] Although vehicle-side unlocking avoids the defects of station-side unlocking, when used for bottom-mounted battery replacement in heavy-duty trucks, the locking mechanism of vehicle-side unlocking may have the following problems during the operation cycle of electric heavy-duty trucks due to the large power, heavy weight, and large size of the battery pack of heavy-duty trucks, and the worse road conditions than those of passenger cars: 1. Fault tolerance for failure of the locking device drive components; 2. Fault tolerance when the locking device drive components are blocked or stuck due to harsh environment or improper use; 3. Possible failure of the locking function of the locking mechanism due to deformation of the battery pack installation position caused by harsh operating environment; 4. Emergency unlocking when the automatic control function of the locking mechanism fails (such as no power supply). Summary of the invention

[0005] The object of the present invention is to provide a locking device with an emergency unlocking function and an electric vehicle to solve the above-mentioned problem.

[0006] The present invention adopts the following technical solution: A locking device with an emergency unlocking function comprises a locking portion arranged on a battery pack frame, a vehicle lock portion arranged on a battery swap vehicle body and an emergency unlocking assembly, wherein the locking portion comprises a battery pack suspension member, and the battery pack suspension member is provided with a lock hole.

[0007] The vehicle lock part includes a driving part, a sliding seat and a fixed seat. The fixed seat is fixedly installed on the battery swap vehicle body. The fixed seat includes a vehicle-end kit for the battery pack suspension to pass through and a guide wheel seat for cooperating with the sliding seat. The sliding seat is provided with a locking tongue for passing through the locking hole. The driving part is detachably mounted on the fixed seat, and the output end of the driving part is detachably connected to the sliding seat. The driving part pushes the sliding seat to slide relative to the fixed seat, driving the locking tongue to insert or withdraw from the locking hole, thereby completing the locking or unlocking function.

[0008] The emergency locking assembly includes a long screw member, a screw hole mounting member and a through hole mounting member. The screw hole mounting member can be detachably mounted on the fixed seat, and the through hole mounting member can be detachably mounted on the sliding seat. The long screw member passes through the through hole mounting member and is threadedly connected with the screw hole mounting member. The sliding seat is driven to slide relative to the fixed seat by rotating the long screw member, thereby driving the lock to insert or withdraw from the lock hole to complete emergency unlocking or emergency locking.

[0009] Furthermore, the battery suspension component is a flange structural component, the bottom of the battery suspension component is fixed to the battery pack frame skeleton by bolts, the upper part of the battery suspension component is provided with the locking hole, a roller is installed in the locking hole, the roller cooperates with the locking tongue, and when the locking tongue is inserted into the locking hole, the roller rolls along the movement of the locking tongue.

[0010] Furthermore, the driving part includes an electric push rod and a push rod connecting piece, the electric push rod is detachably mounted on the fixing seat, the push rod connecting piece is fixedly assembled on the sliding seat, and the telescopic rod of the electric push rod is detachably connected to the push rod connecting piece.

[0011] Furthermore, there are two battery pack suspension parts, two vehicle-end kits, namely the first vehicle-end kit and the second vehicle-end kit, and two guide wheel seats, namely the first guide wheel seat and the second guide wheel seat. The first vehicle-end kit and the second vehicle-end kit are both sleeve structures, and one end of the sleeve is a flange structure, which is used to be bolted and connected to the battery-swap vehicle body frame. The first vehicle-end kit and the second vehicle-end kit are respectively provided with a first wear-resistant plate and a second wear-resistant plate.

[0012] Preferably, the first guide wheel seat includes a T-shaped structural member, two first guide wheels and a cover plate. The end of the T-shaped structural member that is wider than the frame is provided with a first mounting hole in the vertical direction, which is used to cooperate with bolts to fix the connection with the battery swap body frame. The wider end of the T-shaped structural member is provided with second mounting holes on both sides in the horizontal direction, and the two first guide wheels are installed in the two second mounting holes by bolts; the narrower end of the T-shaped structural member is a Y-shaped structure, and one side of the fork of the Y-shaped structure is provided with a receiving groove for assembling an electric push rod or a screw hole mounting member, and the cover plate is covered on the receiving groove and locked by bolts.

[0013] Preferably, the second guide wheel seat includes a U-shaped structural member and two second guide wheels. The U-shaped structural member is fixedly connected to the battery swap vehicle body frame by bolts, and the two second guide wheels are assembled on both sides of the U-shaped structural member by bolts.

[0014] Preferably, the sliding seat includes two push plates and two locking tongues, the push plates are strip-shaped plates, and the push plates are respectively provided with a first long guide groove and a second long guide groove that cooperate with the guide wheels of the first guide wheel seat and the second guide wheel seat. The locking tongue is a T-shaped structure, and its wider end is connected to the push plate by a fastener, and the other end of the locking tongue is beveled along the height direction, and its height and width are adapted to the locking hole.

[0015] Furthermore, it also includes a safety control unit, which includes a pressure sensor, a control circuit and an alarm. The pressure sensor is installed on the fixed seat and corresponds to the lock tongue. The control circuit is electrically connected to the pressure sensor, the alarm and the drive unit. When the drive unit drives the slide to shift in a normal stroke, the pressure sensor is not in contact with the lock tongue, and the control circuit connected to the pressure sensor is in an open circuit state; when the drive unit is abnormal and does not stop at the set position, it drives the lock tongue to continue to move and contact the pressure-sensitive unit of the pressure sensor to form a conductive loop. The control circuit connects to the alarm to start the alarm, and at the same time cuts off the circuit that controls the drive unit to stop the drive unit from driving the lock tongue to continue to shift.

[0016] An emergency unlocking method for a locking device with an emergency unlocking function comprises the above-mentioned locking device. When a driving part of the locking device fails or there is no power input, the emergency unlocking function is realized by the following steps: Step 1: Remove the fixing bolts of the cover plate of the first guide wheel seat and remove the cover plate.

[0017] Step 2: Remove the mounting bolts of the push rod connector and the telescopic rod of the electric push rod, and remove the electric push rod.

[0018] Step three, embed the screw hole mounting piece into the receiving groove of the first guide wheel seat on the side away from the electric push rod, cover the receiving groove with a cover plate, and lock the fixing bolts.

[0019] Step 4: The through-hole mounting piece is embedded and installed in the push rod connecting piece on a side away from the electric push rod.

[0020] Step 5: Pass the threaded end of the long screw through the threaded holes of the through-hole mounting piece and the screw hole mounting piece in sequence.

[0021] Step six, rotate the long screw member, and through the cooperation between the long screw member and the screw hole mounting member, move the relative positions of the screw hole mounting member and the through-hole mounting member, drive the relative positions of the moving slide seat and the fixed seat to achieve emergency unlocking.

[0022] An electric vehicle comprises a battery-swap body and a battery pack, and also comprises the above-mentioned locking device, wherein the battery pack or a frame on which the battery pack is mounted is detachably mounted on the battery-swap body of the electric vehicle via the locking device.

[0023] From the above description of the structure of the present invention, it can be seen that compared with the prior art, the present invention has the following advantages: 1. The driving part of the locking device of the present invention is connected in a detachable manner, and through the emergency unlocking component, when the driving part fails or there is no power input, the driving part can be disassembled, and the emergency unlocking component can be installed on the fixed seat and the sliding seat to replace the driving part to manually drive the fixed seat and the sliding seat to achieve relative displacement, thereby realizing the emergency unlocking function and completing the emergency replacement of the battery pack.

[0024] 2. When the battery pack of the electric vehicle of the present invention is replaced, after the battery pack is transported to the battery replacement position corresponding to the vehicle body, the battery pack only needs to be moved in the vertical direction to reach the target position for locking or unlocking with the vehicle body. The locking or unlocking action is driven by a driving device installed on the body of the battery replacement vehicle, thus avoiding the complex problems of the power drive device and the transmission device brought about by the station-end driven battery replacement, and reducing the difficulty of site construction and commercialization of battery replacement stations.

[0025] 3. The present invention is provided with a safety control unit to realize limit control and stall control functions. The limit control is that when an abnormal situation occurs in the driving part and the displacement exceeds the set length, an audible and visual alarm can be triggered to remind the operator to deal with the fault. At the same time, the driving circuit is cut off and the driving part stops working to prevent the thrust from damaging the locking device.

[0026] 4. The lock tongue of the present invention has a plurality of spare parts with different thicknesses. According to the actual situation, the height of the lock tongue can be replaced to adjust, so as to solve the problem of uneven force on the locking device caused by deformation of the battery exchange frame of the electric battery exchange heavy truck under long-term harsh working conditions, and ensure that the lock tongue and the battery pack suspension are always in a contact force state. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the assembly of the locking device of the present invention.

[0028] Figure 2 It is a schematic diagram of the locking state of the locking device of the present invention.

[0029] Figure 3 It is a schematic diagram of the slide structure of the present invention.

[0030] Figure 4 It is a structural schematic diagram of the lock tongue and the push plate of the present invention.

[0031] Figure 5 It is a schematic diagram of the structure of the fixing seat of the present invention.

[0032] Figure 6 It is a schematic structural diagram of the first vehicle end kit, the second vehicle end sleeve, the first wear-resistant sheet and the second wear-resistant sheet of the present invention.

[0033] Figure 7 It is a schematic structural diagram of the first guide wheel seat and the second guide wheel seat of the present invention.

[0034] Figure 8 It is a schematic diagram of the structure of the electric push rod of the present invention.

[0035] Fig. 9 This is a schematic diagram of the structure of the emergency unlocking assembly of the present invention when assembled and used.

[0036] Fig.10 It is a schematic diagram of the structure of the emergency unlocking component of the present invention.

[0037] Among them, the numbers in the figure are: locking part 100, vehicle lock part 200, emergency unlocking assembly 300, battery pack hanging part 110, roller 120, driving part 210, slide seat 220, fixing seat 230, long screw member 310, screw hole mounting member 320, through hole mounting member 330, lock hole 111, electric push rod 211, push rod connecting member 212, lock tongue 221, push plate 222, first vehicle end kit 231, second vehicle end kit 232, first guide wheel seat 233, second guide wheel seat 234, first durable Grinding plate 235, second wear-resistant plate 236, pressure sensor 241, electric push rod body 2111, electric push rod fixed rod body 2112, electric push rod telescopic rod body 2113, first long strip guide groove 2221, second long strip guide groove 2222, first threaded mounting hole 2311, second threaded mounting hole 2312, T-shaped structural member 2331, first guide wheel 2332, cover plate 2333, U-shaped structural member 2341, second guide wheel 2342, vehicle body frame 400, battery pack frame 500. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0039] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0040] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "disposed" 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 directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0041] Reference Figure 1 and Figure 2 A locking device with an emergency unlocking function includes a pack locking portion 100 arranged on a battery pack frame 500, a vehicle lock portion 200 arranged on a battery swap vehicle body, an emergency unlocking component 300 and a safety control unit.

[0042] Reference Figure 2 and Figure 3 The locking part 100 includes a battery pack suspension 110, and the battery pack suspension 110 is provided with a lock hole 111; the vehicle lock part 200 includes a driving part 210, a slide 220 and a fixed seat 230, and the fixed seat 230 is fixedly installed on the battery swap body, and the fixed seat 230 includes a vehicle-end kit for the battery pack suspension 110 to pass through and a guide wheel seat for cooperating with the slide 220, and the slide 220 is provided with a lock tongue 221 for passing through the lock hole 111, and the driving part 210 is detachably mounted on the fixed seat 230, and the output end of the driving part 210 is detachably connected to the slide 220, and the driving part 210 pushes the slide 220 to slide relative to the fixed seat 230, thereby driving the lock tongue 221 to insert into or withdraw from the lock hole 111, thereby completing the locking or unlocking function.

[0043] Reference Fig. 9 and Fig.10 The emergency locking assembly includes a long screw member 310, a screw hole mounting member 320 and a through hole mounting member 330. The screw hole mounting member 320 is detachably mounted on the fixing seat 230, and the through hole mounting member 330 is detachably mounted on the sliding seat 220. The long screw member 310 passes through the through hole mounting member 330 and is threadedly connected with the screw hole mounting member 320. By rotating the long screw member 310, the sliding seat 220 is driven to slide relative to the fixing seat 230, driving the lock to insert or withdraw from the lock hole 111, thereby completing emergency unlocking or emergency locking.

[0044] Reference Figures 2 to 4Specifically, in this embodiment, one locking device corresponds to two battery suspension members 110. The battery suspension member 110 is a square flange structural member. The square flange at the bottom of the battery suspension member 110 is provided with a mounting hole. The battery suspension member 110 is installed together with the battery pack frame 500 by bolts. A locking hole 111 is provided on the upper part of the battery suspension frame. A roller 120 is installed in the locking hole 111. The roller 120 cooperates with the locking tongue 221 on the slide 220. When the locking tongue 221 is inserted into the locking hole 111, the roller 120 rolls along the movement of the locking tongue 221. In addition, a plurality of circular or long waist-shaped through holes are opened on the battery suspension member 110, so as to reduce the dead weight while meeting the strength requirements.

[0045] Reference Figure 2 and Figure 8 In this embodiment, the driving part 210 is preferably a high-thrust electric push rod 211 and a push rod connector 212. The electric push rod 211 includes an electric push rod body 2111, an electric push rod 211 fixing rod and a push rod connector 212. The electric push rod 211 is detachably mounted on the fixing seat 230 through the electric push rod 211 fixing rod, the push rod connector 212 is fixedly assembled on the sliding seat 220, and the telescopic rod 2113 of the electric push rod 211 is detachably connected to the push rod connector 212.

[0046] Reference Figure 8 Specifically, a mounting hole is provided on the electric push rod 211 connecting piece, which is installed on the slide 220 by bolts. A square through hole is provided at one end of the electric push rod 211 connecting piece away from the mounting hole. The square through hole is connected to the telescopic rod 2113 of the electric push rod 211 by a pin (or a fixing bolt), thereby connecting the electric push rod 211 with the slide 220, so that the electric push rod 211 can push the slide 220 to move.

[0047] Reference Figure 3 and Figure 4 In this embodiment, the slide 220 includes two push plates 222 and two lock tongues 221. The push plates 222 are strip-shaped plates. Under the condition of satisfying their own strength, round holes can be opened on the strip-shaped plates to reduce their own weight. In addition, the push plates 222 are respectively provided with a first long strip guide groove 2221 and a second long strip guide groove 2222 that cooperate with the guide wheels of the first guide wheel seat 233 and the second guide wheel seat 234. The lock tongue 221 is a T-shaped structure, and its wider end is connected to the push plate 222 by a fastener. The other end of the lock tongue 221 is beveled along the height direction, and its height and width are adapted to the lock hole 111, so that it can be inserted into the lock hole 111, and at the same time limited to the wider end of the lock tongue 221.

[0048] In the present invention, the lock tongue 221 can have multiple spare parts of different heights, which can replace the original lock tongue 221. Due to its large size and heavy weight, the bottom-mounted power exchange frame of the electric heavy truck usually has multiple locking devices that work together to bear the weight and lock. After a long period of harsh use conditions, the power exchange frame may be deformed relative to the original state, resulting in different contact states at multiple locking devices, and then making the locking device unevenly stressed. Considering the possibility of this situation, the lock tongue 221 can be replaced with spare parts of different heights according to actual conditions to achieve full contact of the locking device and improve the situation of uneven force.

[0049] Reference Figures 5 to 7 In this embodiment, the fixing seat 230 includes a first vehicle end kit 231, a second vehicle end kit 232, a first guide wheel seat 233, a second guide wheel seat 234, a first wear-resistant plate 235 and a second wear-resistant plate 236. The first vehicle end kit 231 is a square sleeve structure, one end of the sleeve is a rectangular flange structure, a rectangular through hole is provided inside the sleeve, and the end away from the flange structure is enlarged, adapted to the battery pack suspension 110, so that the battery pack suspension 110 can pass through the rectangular through hole in the vertical direction. The flange structure is provided with a first threaded mounting hole 2311 and a second threaded mounting hole 2312. The flange structure is mounted on the battery swap vehicle body frame 400 through the first threaded mounting hole 2311. The first wear-resistant plate 235 is mounted on the flange structure through the second threaded mounting hole 2312. The second vehicle end kit 232 is similar to the first vehicle end kit 231, the difference is that the flange structure of the second vehicle end kit 232 is an asymmetric structure, and the flange convex edge on one side is longer than the other side.

[0050] Reference Figure 7 The first guide wheel seat 233 includes a T-shaped structural member 2331, two first guide wheels 2332 and a cover plate 2333. The wider end of the T-shaped structural member 2331 is provided with a first mounting hole in the vertical direction, and is mounted with the vehicle body frame 400 by bolts. The wider end of the T-shaped structural member 2331 is provided with a second mounting hole in the horizontal direction, and the first guide wheel 2332 is mounted on the second mounting hole of the T-shaped structural member 2331 by bolts. The narrower end of the T-shaped structural member 2331 is a Y-shaped structure, and a receiving groove that matches the shape of the electric push rod fixing rod body 2112 is set on one side of the fork of the Y-shaped structure (the receiving groove can also be used to assemble the screw hole mounting member 320). After the electric push rod fixing rod body 2112 is placed in the receiving groove, the cover plate 2333 is covered on the receiving groove, and the cover plate 2333 and the T-shaped structural member 2331 are fixed by bolts. The electric push rod 211 fixing rod is installed on the first guide wheel seat 233, and the first guide wheel 2332 cooperates with the first long strip guide groove 2221 on the push plate 222, and the first guide wheel 2332 is limited and moved in the second long strip guide groove 2222.

[0051] Reference Figure 7The second guide wheel seat 234 includes a U-shaped structure 2341 and two second guide wheels 2342. The U-shaped structure 2341 is provided with a mounting hole and is mounted with the vehicle body frame 400 by bolts. The second guide wheels 2342 are mounted on both sides of the U-shaped structure 2341 and cooperate with the second long strip guide groove 2222 on the push plate 222. The second guide wheels 2342 are limited and move in the second long strip guide groove 2222.

[0052] In this embodiment, the safety control unit includes a pressure sensor 241, a control circuit and an alarm. The pressure sensor 241 is installed on the fixing seat 230, corresponding to the lock tongue 221, and the control circuit is electrically connected to the pressure sensor 241, the alarm and the driving unit 210. When the driving unit 210 drives the sliding seat 220 to shift in a normal stroke, the pressure sensor 241 does not contact the lock tongue 221, and the control circuit connected to the pressure sensor 241 is in an open circuit state; when the driving unit 210 is abnormal and does not stop at the set position, the lock tongue 221 is driven to continue to move and contact the pressure sensitive unit of the pressure sensor 241 to form a conductive loop, and the control circuit is connected to the alarm to start the alarm, and at the same time, the circuit controlling the driving unit 210 is cut off, and the driving unit 210 stops driving the lock tongue 221 to continue to move.

[0053] The safety control unit also has a stall control function. The stall control is that the drive unit 210 outputs a torque signal to the control circuit in real time. The control circuit monitors the torque signal. When the drive unit 210 is stalled, an abnormal peak value appears in the torque signal, the sound and light alarm is activated, and the power supply of the drive unit 210 is cut off at the same time.

[0054] Reference Figure 7 In some embodiments, the pressure sensor 241 is a resistive touch sensor, which is installed on the U-shaped inner wall of the U-shaped structural member 2341 , opposite to the lock tongue 221 .

[0055] Reference Fig. 9 and Fig.10 In this embodiment, the emergency unlocking assembly 300 specifically has an external thread on one end of the long screw rod 310 that is not less than the telescopic length of the telescopic rod 2113 of the electric push rod 211, and a nut structure on the other end. The screw hole mounting member 320 is a convex structure, and the small end of the convex structure can be matched and embedded with one end of the receiving groove of the T-shaped structural member 2331 of the first guide wheel seat 233, and the convex structure has an internal thread hole that matches the external thread of the long threaded rod. The through hole mounting member 330 is a convex structure that can be matched and embedded in the square through hole of the connecting member of the electric push rod 211, and a through hole that matches the clearance of the long threaded rod is set in the middle of the convex structure.

[0056] Reference Figure 2 , Fig. 9 and Fig.10The emergency unlocking method of the locking device with emergency unlocking function of the present invention implements the emergency unlocking function through the following steps when the locking device driving unit 210 fails or there is no power input: Step 1: remove the fixing bolts of the cover plate 2333 of the first guide wheel seat 233 and remove the cover plate 2333.

[0057] Step 2: Remove the mounting bolts of the push rod connector 212 and the telescopic rod 2113 of the electric push rod 211 and remove the electric push rod 211.

[0058] Step three, embed the screw hole mounting member 320 into the receiving groove of the first guide wheel seat 233 on the side away from the electric push rod 211, cover the cover plate 2333 on the receiving groove, and lock the fixing bolts.

[0059] Step 4: The through-hole mounting member 330 is embedded and mounted in the push rod connecting member 212 at a side away from the electric push rod 211 .

[0060] Step 5: Pass the threaded end of the long screw member 310 through the threaded holes of the through hole mounting member 330 and the screw hole mounting member 320 in sequence.

[0061] Step six, use a tool to twist one end of the long screw member 310 with the nut, and through the cooperation between the long screw member 310 and the screw hole mounting member 320, move the relative positions of the screw hole mounting member 320 and the through-hole mounting member 330, drive the relative positions of the moving slide 220 and the fixed seat 230, and realize emergency unlocking.

[0062] An electric vehicle includes a battery swap body and a battery pack, and also includes the above-mentioned locking device. The body of the electric vehicle is provided with a body mounting frame for connecting and locking the battery pack, a vehicle lock portion 200 is provided on the mounting frame, a battery pack mounting frame is provided on the battery pack, and a battery pack mounting frame is installed with a pack locking portion 100. The battery pack of the electric vehicle is installed and removed by locking and unlocking the vehicle lock portion 200 and the pack locking portion 100, thereby achieving efficient and accurate battery swapping.

[0063] The above is only a specific implementation of the present invention, but the design concept of the present invention is not limited thereto. Any non-substantial changes to the present invention using this concept shall be deemed as an infringement of the protection scope of the present invention.

Claims

1. A locking device with emergency unlocking function, characterized in that: It includes a pack locking part arranged on the battery pack frame, a vehicle locking part arranged on the battery swap vehicle body, and an emergency unlocking assembly, wherein the pack locking part includes a battery pack hanging part, and the battery pack hanging part is provided with a locking hole; The vehicle lock part includes a driving part, a sliding seat and a fixed seat. The fixed seat is fixedly installed on the battery-swapping vehicle body. The fixed seat includes a vehicle-end kit for the battery pack suspension to pass through and a guide wheel seat for cooperating with the sliding seat. The sliding seat is provided with a locking tongue for passing through the locking hole. The driving part is detachably mounted on the fixed seat. The output end of the driving part is detachably connected to the sliding seat. The driving part pushes the sliding seat to slide relative to the fixed seat, driving the locking tongue to insert into or withdraw from the locking hole, thereby completing the locking or unlocking function. The emergency locking assembly includes a long screw member, a screw hole mounting member and a through hole mounting member. The screw hole mounting member can be detachably mounted on the fixed seat, and the through hole mounting member can be detachably mounted on the sliding seat. The long screw member passes through the through hole mounting member and is threadedly connected with the screw hole mounting member. The sliding seat is driven to slide relative to the fixed seat by rotating the long screw member, thereby driving the lock to insert or withdraw from the lock hole to complete emergency unlocking or emergency locking.

2. A locking device with emergency unlocking function according to claim 1, characterized in that: The battery suspension component is a flange structural component. The bottom of the battery suspension component is fixed to the battery pack frame skeleton by bolts. The upper part of the battery suspension component is provided with the locking hole. A roller is installed in the locking hole. The roller cooperates with the locking tongue. When the locking tongue is inserted into the locking hole, the roller rolls along the movement of the locking tongue.

3. A locking device with emergency unlocking function according to claim 1, characterized in that: The driving part comprises an electric push rod and a push rod connecting piece. The electric push rod is detachably mounted on the fixing seat. The push rod connecting piece is fixedly assembled on the sliding seat. The telescopic rod of the electric push rod is detachably connected to the push rod connecting piece.

4. A locking device with emergency unlocking function according to claim 1, characterized in that: There are two battery pack suspension parts, two vehicle-end kits, namely the first vehicle-end kit and the second vehicle-end kit, and two guide wheel seats, namely the first guide wheel seat and the second guide wheel seat. The first vehicle-end kit and the second vehicle-end kit are both sleeve structures, and one end of the sleeve is a flange structure, which is used to be bolted and connected to the battery-swap vehicle body frame. The first vehicle-end kit and the second vehicle-end kit are respectively provided with a first wear-resistant plate and a second wear-resistant plate.

5. A locking device with emergency unlocking function according to claim 4, characterized in that: The first guide wheel seat includes a T-shaped structural member, two first guide wheels and a cover plate. The end of the T-shaped structural member that is wider than the frame is provided with a first mounting hole in the vertical direction, which is used to cooperate with bolts to fix the connection with the battery swap body frame. The wider end of the T-shaped structural member is provided with second mounting holes on both sides in the horizontal direction, and the two first guide wheels are installed in the two second mounting holes by bolts; the narrower end of the T-shaped structural member is a Y-shaped structure, and one side of the fork of the Y-shaped structure is provided with a receiving groove for assembling an electric push rod or a screw hole mounting member, and the cover plate is covered on the receiving groove and locked by bolts.

6. A locking device with emergency unlocking function according to claim 4, characterized in that: The second guide wheel seat includes a U-shaped structural member and two second guide wheels. The U-shaped structural member is fixedly connected to the battery swap vehicle body frame by bolts, and the two second guide wheels are assembled on both sides of the U-shaped structural member by bolts.

7. A locking device with emergency unlocking function according to claim 4, characterized in that: The slide seat includes two push plates and two locking tongues. The push plates are strip-shaped plates, and are respectively provided with a first long guide groove and a second long guide groove that cooperate with the guide wheels of the first guide wheel seat and the second guide wheel seat. The locking tongue is a T-shaped structure, and its wider end is connected to the push plate by a fastener, and the other end of the locking tongue is beveled along the height direction, and its height and width are adapted to the locking hole.

8. A locking device with emergency unlocking function according to claim 1, characterized in that It also includes a safety control unit, which includes a pressure sensor, a control circuit and an alarm. The pressure sensor is installed on the fixed seat and corresponds to the lock tongue. The control circuit is electrically connected to the pressure sensor, the alarm and the drive unit. When the drive unit drives the slide to shift in a normal stroke, the pressure sensor is not in contact with the lock tongue, and the control circuit connected to the pressure sensor is in an open circuit state; when the drive unit is abnormal and does not stop at the set position, it drives the lock tongue to continue to move and contact the pressure-sensitive unit of the pressure sensor to form a conductive loop. The control circuit connects to the alarm to start the alarm, and at the same time cuts off the circuit that controls the drive unit to stop the drive unit from driving the lock tongue to continue to shift.

9. An emergency unlocking method for a locking device with an emergency unlocking function, characterized in that: The locking device according to any one of claims 1 to 8 is provided, wherein when a driving part of the locking device fails or there is no power input, the emergency unlocking function is realized by the following steps: Step 1: Remove the fixing bolts of the cover plate of the first guide wheel seat and remove the cover plate; Step 2: Remove the mounting bolts of the push rod connector and the telescopic rod of the electric push rod, and remove the electric push rod; Step 3: embed the screw hole mounting piece into the receiving groove of the first guide wheel seat on the side away from the electric push rod, cover the receiving groove with a cover plate, and lock the fixing bolts; Step 4: The through-hole mounting piece is embedded and installed in the push rod connecting piece on a side away from the electric push rod; Step 5, passing the threaded end of the long screw through the threaded holes of the through-hole mounting piece and the screw hole mounting piece in sequence; Step six, rotate the long screw member, and through the cooperation between the long screw member and the screw hole mounting member, move the relative positions of the screw hole mounting member and the through-hole mounting member, drive the relative positions of the moving slide seat and the fixed seat to achieve emergency unlocking.

10. An electric vehicle, comprising a battery-swap vehicle body and a battery pack, characterized in that: It also includes a locking device as described in any one of claims 1 to 8, and the battery pack or the frame on which the battery pack is installed is detachably mounted on the battery-exchange body of the electric vehicle through the locking device.

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