Locking device with emergency unlocking function and electric vehicle

Abstract

The application relates to a locking device with an emergency unlocking function and an electric vehicle, the locking device comprising a package locking part arranged on a battery package frame, a vehicle locking part arranged on a battery replacement vehicle body and an emergency unlocking assembly, the package locking part comprising a battery package hanger, the battery package hanger being provided with a lock hole; the vehicle locking part comprising a driving part, a sliding seat and a fixed seat, the sliding seat being provided with a lock tongue for penetrating the lock hole, the driving part being detachably mounted on the fixed seat, the output end of the driving part being detachably connected to the sliding seat, the driving part pushing the sliding seat to slide relative to the fixed seat, driving the lock tongue to insert into or exit from the lock hole, and completing the locking or unlocking function. In the case that the driving part is out of order or has no power input, the driving part is detached, the emergency unlocking assembly is arranged on the fixed seat and the sliding seat, the relative displacement of the fixed seat and the sliding seat is realized by manually driving the fixed seat and the sliding seat instead of the driving part, the emergency unlocking function is realized, and the emergency replacement of the battery package is completed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicle battery replacement, and more particularly to a locking device with an emergency unlocking function and an electric vehicle. BACKGROUND

[0002] With the continuous development of battery replacement technology, the battery replacement mode of electric heavy trucks has gradually developed from the rear-mounted battery replacement, in which the battery pack is placed behind the cab and hoisted onto the frame sill from above, to the bottom-mounted battery replacement, in which the battery pack is arranged at the bottom of the frame sill and mounted from below the frame.

[0003] Currently, the bottom-mounted battery replacement of electric heavy trucks can be divided into two modes, station unlocking and vehicle unlocking, according to the arrangement of the control device of the locking mechanism. The station unlocking installs the device for driving and controlling the locking and unlocking of the locking mechanism on the battery replacement station. In addition to sending the battery pack to the mounting position of the electric heavy truck, the equipment of the battery replacement station also needs to provide the unlocking and contraction of the battery pack locking device driven by the driving equipment. The common one is a tightening gun. In order to meet the space requirement of the locking driving device, the battery replacement station often needs to dig a deep trench to install the locking driving device. This way, the equipment of the battery replacement station is complex, and the construction cost of the battery replacement station is high.

[0004] Although the vehicle unlocking avoids the defects of the station unlocking, when used for the bottom-mounted battery replacement of heavy trucks, due to the large capacity, heavy weight and large volume of the battery pack of heavy trucks, and the harsher road conditions than passenger cars, the locking mechanism of the vehicle unlocking may have the following problems during the operation cycle of the electric heavy truck: 1. fault tolerance of the locking device driving part; 2. fault tolerance when the locking device driving part is blocked and stuck due to harsh environment or improper use; 3. the possibility of locking mechanism locking function failure caused by deformation of the battery pack mounting position due to harsh use environment; 4. how to unlock in emergency when the automatic control function of the locking mechanism fails (such as no power supply). SUMMARY

[0005] The present application aims to provide a locking device with an emergency unlocking function and an electric vehicle to solve the above problems.

[0006] The present application adopts the following technical solutions:

[0007] A locking device with an emergency unlocking function, comprising a pack locking part provided on a battery pack frame, a vehicle locking part provided on a battery replacement vehicle body, and an emergency unlocking assembly, the pack locking part comprising a battery pack suspension, the battery pack suspension being provided with a locking hole.

[0008] The lock part comprises 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 comprises a vehicle end sleeve for the battery pack suspension member to pass through and a guide wheel seat for cooperation with the sliding seat, the sliding seat is provided with a lock tongue for penetrating 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, the driving part drives the sliding seat to slide relative to the fixed seat, and drives the lock tongue to insert into or exit from the lock hole, thereby completing the locking or unlocking function.

[0009] The emergency locking assembly comprises a long screw member, a screw hole mounting member and a through hole mounting member, the screw hole mounting member is detachably installed on the fixed seat, the through hole mounting member is detachably installed on the sliding seat, the long screw member is threadedly connected with the through hole mounting member and the screw hole mounting member penetrating the through hole mounting member, the sliding seat is driven to slide relative to the fixed seat by rotating the long screw member, and the lock is driven to insert into or exit from the lock hole, thereby completing the emergency unlocking or emergency locking.

[0010] Further, the battery suspension member is a flange structure, the bottom of the battery suspension member is fixedly installed on the battery pack frame skeleton through bolts, the upper part of the battery suspension member is provided with the lock hole, a roller is installed in the lock hole, and the roller rolls along the movement of the lock tongue when the lock tongue is inserted into the lock hole.

[0011] Further, the driving part comprises an electric push rod and a push rod connecting member, the electric push rod is detachably installed on the fixed seat, the push rod connecting member is fixedly assembled on the sliding seat, and the telescopic rod of the electric push rod is detachably connected with the push rod connecting member.

[0012] Further, the battery pack suspension member is two, the vehicle end sleeve is two, which are a first vehicle end sleeve and a second vehicle end sleeve, the guide wheel seat is two, which are a first guide wheel seat and a second guide wheel seat, the first vehicle end sleeve and the second vehicle end sleeve are both sleeve structures, one end of the sleeve is a flange structure, which is used for bolt locking connection with the battery swap vehicle body skeleton, and the first wear-resistant sheet and the second wear-resistant sheet are respectively arranged on the first vehicle end sleeve and the second vehicle end sleeve.

[0013] Preferably, the first guide wheel seat comprises a T-shaped structure, two first guide wheels and a cover plate, a first mounting hole is arranged on one end of the T-shaped structure in the vertical direction, which is used for bolt cooperation and fixed connection with the battery swap vehicle body skeleton, second mounting holes are arranged on both sides of the wider end of the T-shaped structure in the horizontal direction, and the two first guide wheels are installed in the two second mounting holes through bolts; one end of the T-shaped structure is a Y-shaped structure, a containing groove for assembling the electric push rod or the screw hole mounting member is arranged on one side of the Y-shaped structure, and the cover plate is arranged on the containing groove and is locked through bolts.

[0014] Preferably, the second guide wheel seat comprises a U-shaped structural member and two second guide wheels, the U-shaped structural member is fixedly connected with the battery swap vehicle body framework by bolts, and the two second guide wheels are assembled on the two sides of the U-shaped structural member by bolts.

[0015] Preferably, the sliding seat comprises two push plates and two locking tongues, the push plate is a strip-shaped plate member, the push plate is respectively provided with a first long strip-shaped guide groove and a second long strip-shaped guide groove matched with the guide wheels of the first guide wheel seat and the second guide wheel seat, the locking tongue is a T-shaped structure, the wider end of the locking tongue is connected with the push plate through a fastener, the other end of the locking tongue is obliquely cut along the height direction, and the height and width of the other end of the locking tongue are matched with the locking hole.

[0016] Further, a safety control unit is further included, the safety control unit comprises a pressure sensor, a control circuit and an alarm, the pressure sensor is installed on the fixed seat and corresponds to the locking tongue, the control circuit is electrically connected with the pressure sensor, the alarm and the driving part, when the driving part drives the sliding seat to move to a normal stroke, the pressure sensor is not in contact with the locking tongue, and the control circuit connected with the pressure sensor is in an open circuit state; when the driving part abnormally stops without being at a set position, the locking tongue is continuously moved to contact and bear force on the pressure-sensitive unit of the pressure sensor, a conductive loop is formed, the control circuit is connected with the alarm to start the alarm, and the circuit for controlling the driving part is cut off to stop the driving part from driving the locking tongue to continuously move.

[0017] An emergency unlocking method of a locking device with an emergency unlocking function, comprising the locking device, in the case that the driving part of the locking device fails or has no power input, the emergency unlocking function is realized through the following steps:

[0018] Step one, remove the fixing bolts of the cover plate of the first guide wheel seat, and remove the cover plate.

[0019] Step two, remove the mounting bolts of the push rod connecting piece and the telescopic rod of the electric push rod, and remove the electric push rod.

[0020] Step three, embed the threaded hole mounting piece in the accommodation groove of the first guide wheel seat away from the electric push rod, cover the accommodation groove with the cover plate, and lock the cover plate into the fixing bolts.

[0021] Step four, embed the through hole mounting piece in the push rod connecting piece away from the electric push rod.

[0022] Step five, pass the threaded end of the long screw rod member through the threaded holes of the through hole mounting piece and the threaded hole mounting piece in sequence.

[0023] Step six, rotate the long screw rod member, move the relative positions of the threaded hole mounting piece and the through hole mounting piece through the cooperation of the long screw rod member and the threaded hole mounting piece, drive the relative positions of the movable sliding seat and the fixed seat, and realize emergency unlocking.

[0024] An electric vehicle comprises a battery replacement vehicle body and a battery pack, and further comprises the above-mentioned locking device, the battery pack or a frame mounting the battery pack is detachably mounted on the battery replacement vehicle body of the electric vehicle through the locking device.

[0025] From the above description of the structure of the present application, compared with the prior art, the present application has the following advantages:

[0026] 1、The driving part of the locking device is detachably connected, and through the emergency unlocking assembly, in the case of driving part failure or no power input, the driving part can be detached, the emergency unlocking assembly is mounted on the fixed seat and the sliding seat, instead of the driving part to manually drive the fixed seat and the sliding seat to realize relative displacement, thereby realizing the emergency unlocking function and completing the emergency replacement of the battery pack.

[0027] 2、When the battery pack of the electric vehicle is replaced, after the battery pack is transported to the battery replacement position corresponding to the vehicle body, the battery pack can be moved in the vertical direction to reach the target position for locking or unlocking with the vehicle body, and the locking or unlocking action is driven by the driving device mounted on the battery replacement vehicle body, thereby avoiding the complexity of power driving device and transmission device caused by station end driving battery replacement, and reducing the difficulty of construction and commercialization of the battery replacement station.

[0028] 3、The safety control unit is provided, which realizes the functions of limit control and stall control, the limit control is that when the driving part appears abnormal condition and the displacement exceeds the set length, the audible and light alarm can be triggered to remind the operator to handle the fault, and the driving part circuit is cut off to stop the driving part from continuing to work, thereby preventing the thrust from damaging the locking device.

[0029] 4、The locking tongue has multiple spare parts with different thicknesses, and the height of the locking tongue can be replaced and adjusted according to the actual situation, so as to solve the problem that the battery replacement frame may be deformed under long-term harsh working conditions, causing uneven stress on the locking device, and ensure that the locking tongue and the battery pack suspension part are always in contact and stressed. BRIEF DESCRIPTION OF DRAWINGS

[0030] Figure 1 The figure is a schematic diagram of the locking device of the present application.

[0031] Figure 2 The figure is a schematic diagram of the locking state of the locking device of the present application.

[0032] Figure 3 The figure is a schematic diagram of the sliding seat structure of the present application.

[0033] Figure 4 The figure is a schematic diagram of the structure of the locking tongue and the push plate of the present application.

[0034] Figure 5It is a schematic view of the fixed seat structure of the application.

[0035] Figure 6 It is a schematic view of the structure of the first vehicle end kit, the second vehicle end kit, the first wear-resistant sheet and the second wear-resistant sheet.

[0036] Figure 7 It is a schematic view of the structure of the first guide wheel seat and the second guide wheel seat.

[0037] Figure 8 It is a schematic view of the structure of the electric push rod.

[0038] Figure 9 It is a schematic view of the structure of the emergency unlocking assembly.

[0039] Figure 10 It is a schematic view of the structure of the emergency unlocking assembly.

[0040] In the figure, the reference numbers are as follows: the lock part 100, the vehicle lock part 200, the emergency unlocking assembly 300, the battery pack suspension part 110, the roller shaft 120, the driving part 210, the sliding seat 220, the fixed seat 230, the long screw part 310, the screw hole mounting part 320, the through hole mounting part 330, the lock hole 111, the electric push rod 211, the push rod connecting part 212, the lock tongue 221, the push plate 222, the first vehicle end kit 231, the second vehicle end kit 232, the first guide wheel seat 233, the second guide wheel seat 234, the first wear-resistant sheet 235, the second wear-resistant sheet 236, the pressure sensor 241, the electric push rod body 2111, the electric push rod fixed rod body 2112, the electric push rod telescopic rod body 2113, the first long strip-shaped guide groove 2221, the second long strip-shaped guide groove 2222, the first screw thread mounting hole 2311, the second screw thread mounting hole 2312, the T-shaped structure part 2331, the first guide wheel 2332, the cover plate 2333, the U-shaped structure part 2341, the second guide wheel 2342, the vehicle body framework 400, and the battery pack framework 500. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0042] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between the components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0043] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "set", "connected" should be understood broadly, for example, it can be fixedly connected, it can be detachably connected, or integrally connected; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0044] Referring to Figure 1 and Figure 2 , a locking device with emergency unlocking function, comprising a package lock part 100 provided on the battery pack frame 500, a vehicle lock part 200 provided on the battery replacement vehicle body, an emergency unlocking assembly 300 and a safety control unit.

[0045] Referring to Figure 2 and Figure 3 , the package lock part 100 comprises a battery pack hanger 110, and the battery pack hanger 110 is provided with a lock hole 111; the vehicle lock part 200 comprises a driving part 210, a sliding seat 220 and a fixed seat 230, the fixed seat 230 is fixedly installed on the battery replacement vehicle body, and the fixed seat 230 comprises a vehicle end sleeve for the battery pack hanger 110 to pass through and a guide wheel seat for cooperation with the sliding seat 220, the sliding seat 220 is provided with a lock tongue 221 for penetrating the lock hole 111, the driving part 210 is detachably installed on the fixed seat 230, and the output end of the driving part 210 is detachably connected to the sliding seat 220, the driving part 210 pushes the sliding seat 220 to slide relative to the fixed seat 230, drives the lock tongue 221 to insert into or exit from the lock hole 111, and completes the locking or unlocking function.

[0046] Referring to Figure 9 and Figure 10 , the emergency locking assembly comprises a long screw rod 310, a screw hole mounting part 320 and a through hole mounting part 330, the screw hole mounting part 320 is detachably installed on the fixed seat 230, the through hole mounting part 330 is detachably installed on the sliding seat 220, the long screw rod 310 penetrates the through hole mounting part 330 and is threadedly connected with the screw hole mounting part 320, the sliding seat 220 is driven to slide relative to the fixed seat 230 by rotating the long screw rod 310, drives the lock tongue to insert into or exit from the lock hole 111, and completes the emergency unlocking or emergency locking.

[0047] Referring to Figures 2 to 4Specifically, in this embodiment, one locking device corresponds to two battery hangers 110, the battery hanger 110 is a square flange structure, the square flange at the bottom of the battery hanger 110 is provided with a mounting hole, and the battery hanger 110 is mounted together with the battery pack frame 500 through bolts. The upper part of the battery hanger is provided with a lock hole 111, a roller 120 is installed in the lock hole 111, the roller 120 rolls along the movement of the lock tongue 221 on the sliding seat 220 when the lock tongue 221 is inserted into the lock hole 111. In addition, a plurality of circular or long waist-shaped through holes are formed on the battery hanger 110, thereby reducing the self weight while meeting the strength requirement.

[0048] With reference to Figure 2 and Figure 8 In this embodiment, the driving part 210 is preferably a large-force electric push rod 211 and a push rod connecting piece 212. The electric push rod 211 includes an electric push rod body 2111, an electric push rod 211 fixing rod, and a push rod connecting piece 212. The electric push rod 211 is detachably mounted on the fixed seat 230 through the electric push rod 211 fixing rod, the push rod connecting piece 212 is fixedly assembled on the sliding seat 220, and the telescopic rod 2113 of the electric push rod 211 is detachably connected with the push rod connecting piece 212.

[0049] With reference to Figure 8 Specifically, the electric push rod 211 connecting piece is provided with a mounting hole, which is mounted on the sliding seat 220 through bolts, and a square through hole is formed at the end of the electric push rod 211 connecting piece away from the mounting hole, and the square through hole is connected with the telescopic rod 2113 of the electric push rod 211 through a pin (or a fixed bolt), so as to connect the electric push rod 211 with the sliding seat 220, and enable the electric push rod 211 to push the sliding seat 220 to move.

[0050] With reference to Figure 3 and Figure 4 In this embodiment, the sliding seat 220 includes two push plates 222 and two lock tongues 221. The push plate 222 is a strip-shaped plate, and a circular hole can be formed on the strip-shaped plate to reduce the self weight under the condition of meeting the strength requirement. In addition, the push plate 222 is respectively provided with a first long strip-shaped guide groove 2221 and a second long strip-shaped guide groove 2222 which are matched 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, the wider end of which is connected with the push plate 222 through a fastener, and the other end of the lock tongue 221 is obliquely cut along the height direction, and the height and width thereof are matched with the lock hole 111, so that the lock tongue 221 can be inserted into the lock hole 111 and be limited at the wider end of the lock tongue 221.

[0051] In the present application, the lock tongue 221 can have multiple spare parts with different heights, which can replace the original lock tongue 221. The bottom-mounted battery swapping frame of the electric heavy truck is usually equipped with multiple locking devices to cooperate with each other to bear and lock due to its large size and heavy weight. After a long time of harsh use, the battery swapping frame may be deformed relative to the original state, causing different contact states at multiple locking devices, and thus uneven stress on the locking devices. 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 devices and improve the situation of uneven stress.

[0052] Referring to Figures 5 to 7 In the present embodiment, the fixed seat 230 includes a first vehicle end assembly 231, a second vehicle end assembly 232, a first guide wheel seat 233, a second guide wheel seat 234, a first wear-resistant sheet 235, and a second wear-resistant sheet 236. The first vehicle end assembly 231 is a square sleeve structure, one end of the sleeve is a flange structure of a rectangular shape, a rectangular through hole is provided in the sleeve, and the end away from the flange structure is enlarged to match the battery pack suspension member 110, so that the battery pack suspension member 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 installed with the battery swapping vehicle body frame 400 through the first threaded mounting hole 2311. The first wear-resistant sheet 235 is installed on the flange structure through the second threaded mounting hole 2312. The second vehicle end assembly 232 is similar to the first vehicle end assembly 231, except that the flange structure of the second vehicle end assembly 232 is an asymmetric structure, and the flange protrusion on one side is longer than that on the other side.

[0053] Referring to Figure 7 The first guide wheel seat 233 includes a T-shaped structure 2331, two first guide wheels 2332, and a cover plate 2333. The wider end of the T-shaped structure 2331 is provided with a first mounting hole in the vertical direction, which is installed together with the vehicle body frame 400 through bolts. The wider end of the T-shaped structure 2331 is provided with a second mounting hole in the horizontal direction, and the first guide wheels 2332 are installed on the second mounting hole of the T-shaped structure 2331 through bolts. The narrower end of the T-shaped structure 2331 is a Y-shaped structure, one side of the Y-shaped structure is provided with a receiving groove in the shape of the electric push rod fixing rod body 2112 (the receiving groove can also be used to assemble the threaded hole mounting member 320), and the electric push rod fixing rod body 2112 is placed in the receiving groove. After the cover plate 2333 is covered on the receiving groove, the cover plate 2333 and the T-shaped structure 2331 are fixed by bolts to install the electric push rod 211 fixing rod member on the first guide wheel seat 233. The first guide wheels 2332 cooperate with the first long strip-shaped guide groove 2221 on the push plate 222, and the first guide wheels 2332 are limited to move in the second long strip-shaped guide groove 2222.

[0054] Referring to Figure 7The second guide wheel seat 234 comprises a U-shaped structural member 2341 and two second guide wheels 2342. The U-shaped structural member 2341 is provided with mounting holes and is mounted together with the vehicle body frame 400 through bolts. The second guide wheels 2342 are mounted on both sides of the U-shaped structural member 2341 and cooperate with the second long strip-shaped guide groove 2222 on the push plate 222, and are limited to move in the second long strip-shaped guide groove 2222 through the second guide wheels 2342.

[0055] In the embodiment, the safety control unit comprises a pressure sensor 241, a control circuit and an alarm. The pressure sensor 241 is mounted on the fixing seat 230 and corresponds to the lock tongue 221. The control circuit is electrically connected with the pressure sensor 241, the alarm and the driving part 210. When the driving part 210 drives the sliding seat 220 to displace at a normal stroke, the pressure sensor 241 is not in contact with the lock tongue 221, and the control circuit connected with the pressure sensor 241 is in an open circuit state. When the driving part 210 abnormally stops without being at the set position, the lock tongue 221 is continuously moved to contact and bear force on the pressure-sensitive unit of the pressure sensor 241, to form a conductive loop, the control circuit starts the alarm and cuts off the circuit for controlling the driving part 210, to stop the driving part 210 from driving the lock tongue 221 to continuously displace.

[0056] The safety control unit also has a stall control function. The stall control is that the driving part 210 outputs a torque signal to the control circuit in real time, the control circuit monitors the torque signal, and when the driving part 210 stalls and the torque signal has an abnormal peak value, the audible and visual alarm is started to alarm, and the power supply of the driving part 210 is cut off.

[0057] Referring to Figure 7 In some embodiments, the pressure sensor 241 is a resistance touch sensor and is mounted on the U-shaped inner wall of the U-shaped structural member 2341 and corresponds to the lock tongue 221.

[0058] Referring to Figure 9 and Figure 10 In the embodiment, the emergency unlocking assembly 300 specifically comprises a long threaded rod 310, one end of which is provided with external threads with a length not less than the telescopic length of the telescopic rod 2113 of the electric push rod 211, and the other end is a screw cap structure. The threaded hole mounting member 320 is a convex structure, the small end of which can be embedded in one end of the accommodating groove of the T-shaped structural member 2331 of the first guide wheel seat 233 in cooperation, and the convex structure is provided with an internal threaded hole matched with the external threads of the long threaded rod. The through hole mounting member 330 is a convex structure and can be embedded in the square-shaped through hole of the electric push rod 211 connecting piece in cooperation, and the convex structure is provided with a through hole matched with the gap of the long threaded rod.

[0059] Referring to Figure 2 , Figure 9 and Figure 10The emergency unlocking method of the locking device with emergency unlocking function, in the case of locking device drive part 210 failure or no power input, through the following steps, realize the emergency unlocking function:

[0060] Step one, remove the fixed bolt of the cover plate 2333 of the first guide wheel seat 233, and remove the cover plate 2333.

[0061] Step two, remove the mounting bolt of the push rod connecting piece 212 and the telescopic rod 2113 of the electric push rod 211, and remove the electric push rod 211.

[0062] Step three, embed the screw hole mounting piece 320 in the accommodation groove of the first guide wheel seat 233 away from the electric push rod 211, cover the accommodation groove with the cover plate 2333, and lock into the fixed bolt.

[0063] Step four, embed the through hole mounting piece 330 in the push rod connecting piece 212 away from the electric push rod 211.

[0064] Step five, pass the threaded end of the long screw rod piece 310 through the threaded hole of the screw hole mounting piece 320 and the through hole mounting piece 330 in turn.

[0065] Step six, turn the nut end of the long screw rod piece 310 by tool, move the relative position of the screw hole mounting piece 320 and the through hole mounting piece 330 through the cooperation of the long screw rod piece 310 and the screw hole mounting piece 320, drive the relative position of the moving slide 220 and the fixed seat 230, and realize emergency unlocking.

[0066] An electric vehicle includes a battery pack and a battery pack, and also includes the above locking device. The vehicle body of the electric vehicle is provided with a vehicle body mounting framework for connecting the locked battery pack, and the vehicle lock part 200 is arranged on the mounting framework. The battery pack is provided with a battery pack mounting framework, and the pack lock part 100 is arranged on the battery pack mounting framework. The installation and removal of the battery pack of the electric vehicle are realized by the locking and unlocking between the vehicle lock part 200 and the pack lock part 100, and the efficient and accurate battery replacement is realized.

[0067] The above is only a specific embodiment of the present application, but the design concept of the present application is not limited to this. Any non-essential modification of the present application using this concept shall be regarded as an infringement of the protection scope of the present application.

Claims

1. A locking device with an emergency unlocking function, characterized in that: It includes a battery pack locking part located on the battery pack frame, a vehicle locking part located on the battery swapping vehicle body, and an emergency unlocking component. The battery pack locking part includes a battery pack suspension component, which has a lock hole. The vehicle lock unit includes a drive unit, a slide block, and a fixed base. The fixed base is fixedly installed on the battery swapping vehicle body. The fixed base includes a vehicle end kit for the battery pack suspension component to pass through and a guide wheel seat for cooperating with the slide block. The slide block is provided with a locking tongue for passing through the lock hole. The drive unit is detachably installed on the fixed base, and the output end of the drive unit is detachably connected to the slide block. The drive unit pushes the slide block to slide relative to the fixed base, thereby causing the locking tongue to insert or retract from the lock hole to complete the locking or unlocking function. The emergency unlocking component includes a long screw, a screw hole mounting component, and a through hole mounting component. The screw hole mounting component is detachably mounted on the fixed base, and the through hole mounting component is detachably mounted on the slide block. The long screw passes through the through hole mounting component and is threadedly connected to the screw hole mounting component. By rotating the long screw, the slide block is driven to slide relative to the fixed base, causing the locking tongue to insert into or retract from the locking hole, thus completing the emergency unlocking or emergency locking.

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

3. A locking device with emergency unlocking function according to claim 1, characterized in that: The drive unit includes an electric push rod and a push rod connector. The electric push rod is detachably mounted on the fixed base, and the push rod connector is fixedly assembled on the slide block. The telescopic rod of the electric push rod is detachably connected to the push rod connector.

4. A locking device with emergency unlocking function according to claim 1, characterized in that: There are two battery pack suspension components, two vehicle end kits, namely a first vehicle end kit and a second vehicle end kit, and two guide wheel seats, namely a first guide wheel seat and a second guide wheel seat. Both the first vehicle end kit and the second vehicle end kit are sleeve structures, with one end of the sleeve being a flange structure for bolting and locking to the battery swapping vehicle 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 component, two first guide wheels, and a cover plate. The T-shaped structural component has a first mounting hole in the vertical direction at one end of the frame for fixing to the battery swapping vehicle frame with bolts. The wider end of the T-shaped structural component has second mounting holes on both sides in the horizontal direction. The two first guide wheels are installed in the two second mounting holes by bolts. The narrower end of the T-shaped structural component is a Y-shaped structure. The forked side of the Y-shaped structure is provided with a receiving groove for assembling an electric push rod or a screw hole mounting component. The cover plate is placed on the receiving groove and locked with 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 component and two second guide wheels. The U-shaped structural component is fixedly connected to the battery swapping vehicle frame by bolts, and the two second guide wheels are assembled on both sides of the U-shaped structural component by bolts.

7. A locking device with emergency unlocking function according to claim 4, characterized in that: The slide 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 strip-shaped guide groove and a second long strip-shaped guide groove that cooperate with the guide wheels of the first guide wheel seat and the second guide wheel seat. The locking tongues are T-shaped structures, with the wider end connected to the push plates by fasteners, and the other end of the locking tongues beveled along the height direction. Their height and width are adapted to the lock holes.

8. A locking device with emergency unlocking function according to claim 1, characterized in that... It also includes a safety control unit, which comprises a pressure sensor, a control circuit, and an alarm. The pressure sensor is mounted on the fixed base, corresponding to the latch. The control circuit is electrically connected to the pressure sensor, the alarm, and the drive unit. When the drive unit drives the slide to move within its normal travel range, the pressure sensor does not contact the latch, and the control circuit connected to the pressure sensor is in an open circuit state. When the drive unit malfunctions and fails to stop at the set position, it drives the latch to continue moving and contact the pressure-sensitive unit of the pressure sensor, forming a conductive circuit. The control circuit then activates the alarm and simultaneously cuts off the circuit controlling the drive unit, stopping the drive unit from driving the latch to continue moving.

9. An emergency unlocking method for a locking device with an emergency unlocking function, characterized in that: Including the locking device as described in any one of claims 1 to 8, in the event of a malfunction in the locking device drive unit or a lack of power input, an emergency unlocking function is achieved through 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: Disassemble 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: Insert 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 the cover plate, and lock in the fixing bolts; Step 4: The through-hole mounting piece is embedded in the push rod connector on the side away from the electric push rod; Step 5: Pass the threaded end of the long screw through the threaded holes of the through-hole mounting part and the screw hole mounting part in sequence; Step six: Rotate the long screw component. Through the cooperation between the long screw component and the screw hole mounting component, move the relative positions of the screw hole mounting component and the through hole mounting component, thereby moving the relative positions of the sliding block and the fixed seat to achieve emergency unlocking.

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

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