CN219214778U - Battery pack locking and unlocking system for power exchange station - Google Patents
Battery pack locking and unlocking system for power exchange station Download PDFInfo
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- CN219214778U CN219214778U CN202320263331.9U CN202320263331U CN219214778U CN 219214778 U CN219214778 U CN 219214778U CN 202320263331 U CN202320263331 U CN 202320263331U CN 219214778 U CN219214778 U CN 219214778U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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Abstract
The utility model provides a battery pack locking and unlocking system for a power exchange station. The system comprises: locking and unlocking the platform; the locking and unlocking device is arranged at the locking and unlocking platform and is used for locking and unlocking a battery pack of the battery-powered vehicle; the camera device is telescopically arranged at the locking and unlocking platform and is arranged to be positioned in a gap between the battery pack and the vehicle body of the battery-powered vehicle when the locking and unlocking platform is extended, so as to shoot images containing the locking state of the battery pack and the vehicle body. The setting mode of the image pickup device enables the image pickup device to obtain relatively accurate images containing the locking state of the battery pack and the vehicle body, so that the shooting space probability of the image pickup device is greatly reduced, and the shooting time is reduced.
Description
Technical Field
The utility model relates to the field of power exchange stations, in particular to a battery pack locking and unlocking system for a power exchange station.
Background
In the process of replacing electricity, if the battery pack lock body and the replaced electric vehicle are not on the same datum plane, the situation that the battery pack is not installed in place can occur, and the situation easily causes the risk that the battery pack falls off when the replaced electric vehicle encounters bumpy road conditions, so that the normal use of the vehicle is affected.
The existing camera arranged on the platform of the battery replacement station can only shoot outside a vehicle, cannot shoot a picture of the installation state between the battery pack lock body and the vehicle body directly, can only judge whether the battery pack lock body is installed in place with the battery replacement vehicle approximately through part of details in the shot picture, and judges whether the battery pack lock body is installed in place or not through, for example, judging the rotation angle of the battery pack lock body through a shooting chassis, and the accuracy of the judgment result is very low. In addition, the current camera used in the scene has long shooting time, and more pictures may need to be shot to acquire part of details of the installation state which may be judged, because the current camera has a certain transmission delay, is easy to photograph in a window time of 2-3 seconds, and needs a sufficient time interval to photograph to prevent the photograph, so that the current commutation process is slow, and usually needs 3-4 minutes.
Disclosure of Invention
An object of the present utility model is to provide a battery pack locking and unlocking system for a battery exchange station capable of precisely judging whether a battery pack lock body is mounted in place or not while reducing the time taken to take an effective picture.
A further object of the present utility model is to reduce communication delay between a cloud server and an image pickup apparatus.
In particular, the present utility model provides a battery pack locking and unlocking system for a power exchange station, comprising:
locking and unlocking the platform;
the locking and unlocking device is arranged at the locking and unlocking platform and is used for locking and unlocking a battery pack of the battery-powered vehicle;
the camera device is telescopically arranged at the locking and unlocking platform and is arranged to be positioned in a gap between the battery pack and the vehicle body of the battery-powered vehicle when the locking and unlocking platform is extended, so as to shoot images containing the locking state of the battery pack and the vehicle body.
Further, the method further comprises the following steps:
and the first lifting mechanism is connected with the locking and unlocking platform and is used for driving the locking and unlocking platform to perform lifting movement so as to adjust the distance between the locking and unlocking platform and the vehicle for replacing.
Further, the number of the image capturing devices is multiple, and the multiple image capturing devices are respectively arranged at different positions of the locking platform and the unlocking platform so as to capture images of the locking state at different angles.
Further, each of the image pickup apparatuses includes:
an image pickup unit for picking up an image;
and the floating end of the second lifting mechanism is connected with the camera shooting unit and is used for driving the camera shooting unit to retract into the locking and unlocking platform or extend out of the locking and unlocking platform.
Further, the camera unit adopts a CCD camera or a CMOS camera.
Further, the second lifting mechanism adopts an air cylinder or a hydraulic cylinder.
Further, the locking and unlocking device is arranged at the edge of the locking and unlocking platform.
Further, notches for setting the camera device are arranged at four corners of the locking and unlocking platform.
Further, the battery storage rack for storing the battery packs is arranged beside the locking and unlocking platform, and the battery storage rack is provided with a plurality of areas for storing the battery packs so as to store the battery packs.
In the system provided by the utility model, the camera device is arranged at the locking and unlocking platform in a telescopic way and is arranged to be positioned in a gap between the battery pack and the vehicle body of the trolley replacing vehicle when the camera device extends out of the locking and unlocking platform so as to shoot images containing the locking state of the battery pack and the vehicle body.
Furthermore, in the system provided by the utility model, a plurality of imaging devices are arranged, and the plurality of imaging devices are respectively arranged at different positions of the locking platform, so that the imaging devices can be arranged in a mode of simultaneously shooting images in locking states at different angles, and the shooting time is saved.
The above, as well as additional objectives, advantages, and features of the present utility model will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present utility model when read in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the utility model will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:
FIG. 1 is a schematic topology of a battery pack locking and unlocking system according to one embodiment of the utility model;
FIG. 2 is a schematic top view of the locking and unlocking platform of FIG. 1;
FIG. 3 is a schematic side view of the imaging unit of the lock and unlock platform of FIG. 1 in a retracted state;
FIG. 4 is a schematic side view of the camera unit of the locking and unlocking platform of FIG. 1 in an extended state;
FIG. 5 is a schematic partial side view of a battery pack locking and unlocking system taking a photograph in accordance with one embodiment of the present utility model;
in the figure:
1-locking and unlocking the platform;
11-plate members;
2-locking and unlocking devices;
3-a camera device;
31-a camera unit;
32-a second lifting mechanism;
4-a cloud server;
5-a control cabinet;
51-PLC；
52-a station control platform;
53-NVR；
6-a lifting mechanism;
7-a battery storage rack;
71-new battery pack;
8-a power-change vehicle;
81-old battery pack.
Detailed Description
Fig. 1 is a schematic topology of a battery pack locking and unlocking system according to one embodiment of the utility model. As shown in fig. 1, the battery pack locking and unlocking system for the battery exchange station comprises a locking and unlocking platform 1, a locking and unlocking device 2 and a camera device 3, wherein the locking and unlocking device 2 is arranged at the locking and unlocking platform 1 and is used for locking and unlocking a battery pack of the battery exchange vehicle 8, and the camera device 3 is arranged at the locking and unlocking platform 1 in a telescopic manner and is arranged to be positioned in a gap between the battery pack and a vehicle body of the battery exchange vehicle 8 when the locking and unlocking platform 1 is extended so as to shoot images containing locking states of the battery pack and the vehicle body. In the system provided by this embodiment, the camera device 3 is telescopically arranged at the locking and unlocking platform 1, and is arranged to be located in the gap between the battery pack and the vehicle body of the vehicle 8 when the locking and unlocking platform 1 is extended, so as to shoot an image containing the locking state of the battery pack and the vehicle body, the lock body can be directly shot to judge whether the battery pack is locked, compared with the traditional mode of shooting a chassis and judging the rotation angle of the lock body, the setting mode of the camera device 3 in this embodiment enables the camera device 3 to obtain a relatively accurate image containing the locking state of the battery pack and the vehicle body, the shooting empty probability of the camera device is greatly reduced, the shooting empty probability of the camera device 3 is greatly reduced when shooting is also reduced, and the shooting time is also reduced.
Fig. 2 is a schematic top view of the locking and unlocking platform of fig. 1. Fig. 3 is a schematic side view of the lock-out platform of fig. 1 in a retracted state of the camera unit. Fig. 4 is a schematic side view of the imaging unit of the lock-out platform of fig. 1 in an extended state. Fig. 5 is a schematic partial side view of a battery pack locking and unlocking system taking a photograph according to one embodiment of the present utility model. According to one embodiment of the present utility model, the locking and unlocking platform 1 comprises a plate 11 and a first lifting mechanism connected with the plate 11, and the first lifting mechanism can adjust the distance between the locking and unlocking platform 1 and the electric vehicle 8 so as to facilitate the electric power change. Specifically, the underbody of the battery-powered vehicle in this embodiment has a recess for accommodating the battery pack, and considering that the shape of the battery pack is generally rectangular, the edge of the battery pack is connected with the vehicle body, and the locking and unlocking device 2 needs to operate the connection portion between the battery pack and the vehicle body, so the plate 11 is correspondingly rectangular, and the locking and unlocking device 2 is disposed at the edge of the plate 11 so as to operate the clamping portion between the battery pack and the vehicle body, and in order to facilitate the installation of the image pickup device 3, the four corners of the plate 11 are also provided with notches for installing the image pickup device 3.
More specifically, the vertical projection of the battery pack is the same as the edge of the lock-and-unlock platform 1, so that the operations of the image pickup device 3 and the lock-and-unlock device 2 provided on the lock-and-unlock platform 1 are facilitated. In more examples, the vertical projection of the battery pack is completely located inside the edge of the locking and unlocking platform 1, so that the camera device 3 and the locking and unlocking device 2 arranged on the locking and unlocking platform 1 can work on the battery pack.
According to an embodiment of the present utility model, the locking and unlocking device 2 is in the prior art, for example, may be in the form of the structure of the utility model patent of CN202021349546.5, which is not described herein.
According to one embodiment of the present utility model, the number of the image capturing devices 3 is four, and the four image capturing devices 3 are respectively arranged at the notches of four corners of the plate 11 of the locking and unlocking platform 1 so as to capture images of locking states at different angles. Specifically, the gap between the battery pack and the vehicle body above the place is located at the corner of the battery pack, the area of which is slightly larger than the gap between the edge of the battery pack and the vehicle body, and each image pickup device 3 can be extended upward into the gap between the battery pack and the vehicle body above the place at the mounting position. In further examples, the number of image capturing apparatuses 3 may also be other numbers, for example 2 or 3.
According to one embodiment of the present utility model, each image capturing apparatus 3 includes an image capturing unit 31 and a second lifting mechanism 32, where the image capturing unit 31 is connected to a moving end of the second lifting mechanism 32, and the second lifting mechanism 32 can drive the image capturing unit 31 to retract into the locking and unlocking platform 1 or extend out of the locking and unlocking platform 1. Specifically, the image capturing unit 31 adopts a CCD camera or a CMOS camera, and can directly convert an optical signal into an analog current signal, and the current signal is amplified and analog-to-digital converted to obtain, store, transmit, process and reproduce an image, and the second lifting mechanism 32 adopts an air cylinder or a hydraulic cylinder, so that the image capturing device can accurately move. More specifically, in this embodiment, the camera specifically selects a wide-angle camera with a viewing angle of 120 ° to shoot the lock body, the vehicle body around the lock body and the battery pack in a relatively narrow space, and obtain an overall image of the lock body. It will be appreciated that in this embodiment, each camera unit 31 needs to take a photograph of the lock body to determine whether the battery pack is locked, so that a wide-angle camera is required.
According to one embodiment of the present utility model, since the second elevating mechanism 32 of the present utility model employs an air cylinder or a hydraulic cylinder, it is also necessary to connect an air pump or a hydraulic pump to the second elevating mechanism 32 to obtain power. The second elevating mechanism 32 has a fixed end and a floating end, the camera shooting unit 31 is fixedly connected to the floating end of the second elevating mechanism 32, and the second elevating mechanism 32 selects the model with the maximum stroke meeting the shooting requirement of the camera shooting unit 31 during selection so as to fully utilize the limiting function of the second elevating mechanism 32.
According to an embodiment of the present utility model, in the actual running process, the system in the present embodiment is further connected to a cloud server 4, where the cloud server 4 is connected to the image capturing device 3 and the locking and unlocking platform 1, and is configured to compare the image captured by the image capturing device 3 with the pre-stored image to determine whether the locking state of the battery pack and the vehicle body is normal, and send a normal power-on/off command to the locking and unlocking device 2 after determining that the locking state is normal. The cloud server 4 is configured to determine that the locked state of the battery pack and the vehicle body is normal when the gap between the lock body of the battery pack and the vehicle body is within a preset range. Specifically, the cloud server 4 sends control signals to the above-mentioned locking and unlocking platform 1, the locking and unlocking device 2 and the image capturing device 3, and in order to enable these control signals to drive corresponding components, in this embodiment, a control cabinet 5 is further provided, and the control instruction from the cloud server 4 is sent to the corresponding components through the processing of the control cabinet 5. Specifically, a PLC51 (Programmable Logic Controller, a programmable logic controller), a station control platform 52 and an NVR53 (Network Video Recorder, a network video recorder) are disposed in the control cabinet 5, the PLC51 receives a signal of the in-place vehicle 8 and sends an action command, the station control platform 52 receives and stores a photograph taken by a camera, and uploads the photograph to the cloud server 4, and the NVR53 is connected to each camera through a POE (Power Over Ethernet, active ethernet) network cable. It is understood that, on a physical level, PLC51 is connected to lock and unlock platform 1, and stand control platform 52 is connected to NVR53.
According to one embodiment of the utility model, the cloud server 4, when running, comprises the steps of:
step S1, determining whether the image pickup device 3 is extended in place.
Step S2 of transmitting an instruction to the image pickup device 3 to take an image including the battery pack and the locked state of the vehicle body after determining that the image pickup device 3 is extended in place.
And step S3, comparing the image shot by the image pickup device 3 with a pre-stored image to determine whether the locking state of the battery pack and the vehicle body is normal, and sending a normal power-on/off switching instruction to the power-on/off switching device 2 after determining that the locking state is normal.
In step S1, it is determined whether the image pickup device 3 is extended in place, specifically including the steps of:
step S11, obtaining a distance n between the bottom of the groove closest to the locking and unlocking platform 1 and the locking and unlocking platform 1, wherein the distance n is the height difference between the vehicle body and the locking and unlocking platform 1. It will be appreciated that the height difference n may be variable, and may be obtained by measuring a distance meter provided on the locking and unlocking platform 1, by measuring a distance meter provided on the lifting mechanism 6, or by measuring a camera provided in another area of the power exchange station by an image recognition algorithm.
Step S12, acquiring the height h of the image pickup device 3 extending out of the locking and unlocking platform 1. It will be appreciated that the extension height of the camera 3, i.e. the extension height of the second lifting mechanism 32, i.e. the extension height of the floating end thereof, may be obtained by calculating the real-time travel of the second lifting mechanism 32.
Step S13, determining whether the image capturing device 3 extends to a proper position according to the distance n between the bottom of the groove closest to the locking and unlocking platform 1 and the height h of the image capturing device 3 extending out of the locking and unlocking platform 1. Specifically, when h is greater than or equal to n, the floating end of the second lifting mechanism 32 is located inside the vehicle body, and at this time, the image pickup device 3 extends out to the right, and h is less than n. The floating end of the second lifting mechanism 32 is positioned under the vehicle body and the image pickup device 3 is not extended in place. It will be appreciated that such determination is made specifically by the cloud server 4. In further examples, such determination may also be made by PLC 51.
According to one embodiment of the present utility model, in step S2, the image pickup device 3 passes through a gap between the battery pack and the vehicle body for a set time t1 to collect image information of the battery pack lock body and the vehicle body. More specifically, t1 ranges from 0.5s to 2s to save the time taken for photographing as much as possible. When the camera 3 photographs, since the camera is already located in the vehicle body, the camera can photograph an image of the lock body without repeated photographing to prevent photographing.
According to one embodiment of the present utility model, in step S3, the image captured by the image capturing device 3 is compared with a pre-stored image by: determining a first distance L1 between a battery pack and a vehicle body in an image according to the image shot by the image shooting device 3, determining a second distance L2 between the battery pack and the vehicle body in the pre-stored image according to the pre-stored image, and determining that the locking state is normal when the first distance L1 and the second distance L2 meet the following formula, otherwise, determining that the locking state is abnormal:
l2-a is less than or equal to L1 and less than or equal to L2+a, wherein a is more than or equal to 0, and a is a constant.
Specifically, the cloud server 4 may identify the image and further identify the edge of the object in the image, and in this embodiment, the cloud server 4 may identify the edge of the upper portion of the battery pack and the edge of the vehicle body, further calculate the first distance L1 between the edge of the upper portion of the battery pack and the edge of the vehicle body, and determine, according to the pre-stored image, the second distance L2 between the battery pack and the vehicle body in the pre-stored image, where l2±a represents an error of the second distance L2. In step S3, the pre-stored image is a captured image when the connection requirement of the vehicle body and the battery pack is satisfied. In this step, whether the locking state of the battery pack and the vehicle body is normal can be further determined by identifying and judging the first distance L1 between the battery pack and the vehicle body.
According to one embodiment of the utility model, before step S1, the following steps are further included:
a battery pack type is acquired, which includes a new battery pack 71 to be mounted and an old battery pack 81 detached from the vehicle body. In this embodiment, the type of the new battery pack 71 and the old battery pack 81 is distinguished in order to determine the subsequent operation steps, as shown in fig. 1, the vehicle enters the power exchange station during the running process, the battery pack on the vehicle body is the old battery pack 81, the bottom of the vehicle body is empty after the old battery pack 81 is replaced, and the vehicle body is required to install the new battery pack.
Specifically, after confirming that the type of the battery pack is the old battery pack 81, the lifting mechanism 6 lifts the vehicle to a specified height, and at the same time, the locking and unlocking platform 1 is lifted to a defined height, and the locking and unlocking device 2 and the second lifting mechanism 32 are simultaneously extended. After the locking and unlocking device 2 and the second lifting mechanism 32 synchronously extend and feed back the extending signal to the PLC51 in the control cabinet 5, the PLC51 feeds back information to the station control platform 52, the station control platform 52 sends a photographing instruction of the old battery pack 81 through the NVR53, the photographing unit 31 uploads a photographed photo to the cloud server 4 through the station control platform 52, the cloud server 4 judges a first distance between a lock body of the old battery pack 81 and a vehicle body, if L2-a is less than or equal to L1 and less than or equal to L2+a, the power is normally unlocked and changed, the second lifting mechanism 32 is retracted, if L1 is less than or equal to L2-a or L1 and more than or equal to L2+a, the cloud server 4 judges that the power change is abnormal, the current power change is stopped, and the vehicle is overhauled.
Specifically, before the new battery pack 71 is installed, the bottom of the vehicle is empty, the new battery pack 71 is placed on the locking and unlocking platform 1 through a transmission mechanism, after the new battery pack 71 is transmitted to a designated position of the locking and unlocking platform 1, the locking and unlocking platform 1 is lifted to a designated height, meanwhile, the locking and unlocking device 2 and the second lifting mechanism 32 synchronously extend, after the locking and unlocking device 2 and the second lifting mechanism 32 feed back the extending signal to the PLC51 in the control cabinet 5, the PLC51 feeds back information to the station control platform 52, the station control platform 52 sends a photographing instruction of the new battery pack 71 through the NVR53, the photographing unit 31 uploads the photographed photo to the cloud server 4 through the station control platform 52, the cloud server 4 judges the gap between the lock body and the vehicle body of the old battery pack 81, if L2-a is less than or equal to L2+a, the cloud server 4 judges that the power change is abnormal, the current change is normally locked and the current change is normally carried out if L1 is less than L2-a or L1+a, the second lifting mechanism 32 retracts, and the lifting mechanism 6 and the current is moved to the initial stage is moved to the unlocking state.
More specifically, in this embodiment, L2 is 0 and a is also 0, that is, the cloud server 4 determines a first interval between the lock body of the old battery pack 81 and the vehicle body, if the first interval is 0, the power is normally unlocked and replaced, the second lifting mechanism 32 is retracted, and if the first interval is not 0, the cloud server 4 determines that the power replacement is abnormal, and the current power replacement is stopped, so that the vehicle is overhauled. In more examples, whether the lock tongue of the battery pack lock body is identified or not can be judged according to the collected image information of the battery pack lock body and the vehicle body, if the lock tongue is not identified, the gap width is 0, otherwise, the gap width is not 0.
By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the utility model have been shown and described herein in detail, many other variations or modifications of the utility model consistent with the principles of the utility model may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the utility model. Accordingly, the scope of the present utility model should be understood and deemed to cover all such other variations or modifications.
Claims (9)
1. A battery pack locking and unlocking system for a power exchange station, comprising:
locking and unlocking the platform;
the locking and unlocking device is arranged at the locking and unlocking platform and is used for locking and unlocking a battery pack of the battery-powered vehicle;
the camera device is telescopically arranged at the locking and unlocking platform and is arranged to be positioned in a gap between the battery pack and the vehicle body of the battery-powered vehicle when the locking and unlocking platform is extended, so as to shoot images containing the locking state of the battery pack and the vehicle body.
2. The battery pack locking and unlocking system for a power exchange station of claim 1, further comprising:
and the first lifting mechanism is connected with the locking and unlocking platform and is used for driving the locking and unlocking platform to perform lifting movement so as to adjust the distance between the locking and unlocking platform and the vehicle for replacing.
3. The battery pack locking and unlocking system for a power exchange station according to claim 2, wherein the number of the image pickup devices is plural, and the plurality of image pickup devices are respectively arranged at different positions of the locking and unlocking platform so as to take images of the locking states at different angles.
4. A battery pack locking and unlocking system for a power exchange station according to claim 3, wherein each of the image pickup devices includes:
an image pickup unit for picking up an image;
and the floating end of the second lifting mechanism is connected with the camera shooting unit and is used for driving the camera shooting unit to retract into the locking and unlocking platform or extend out of the locking and unlocking platform.
5. The battery pack locking and unlocking system for a battery exchange station according to claim 4, wherein the camera unit adopts a CCD camera or a CMOS camera.
6. The battery pack locking and unlocking system for a power exchange station according to claim 4, wherein the second lifting mechanism adopts an air cylinder or a hydraulic cylinder.
7. The battery pack locking and unlocking system for a power exchange station according to claim 1, wherein the locking and unlocking device is provided at an edge of the locking and unlocking platform.
8. The battery pack locking and unlocking system for the power exchange station according to claim 1 or 6, wherein notches for arranging the image pickup device are further arranged at four corners of the locking and unlocking platform.
9. The battery pack locking and unlocking system for a power exchange station according to claim 1, further comprising a battery storage rack for storing battery packs, wherein the battery storage rack is arranged beside the locking and unlocking platform, and a plurality of battery pack storage areas are formed in the battery storage rack for storing a plurality of battery packs.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320263331.9U CN219214778U (en) | 2023-02-08 | 2023-02-08 | Battery pack locking and unlocking system for power exchange station |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320263331.9U CN219214778U (en) | 2023-02-08 | 2023-02-08 | Battery pack locking and unlocking system for power exchange station |
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| CN219214778U true CN219214778U (en) | 2023-06-20 |
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| CN202320263331.9U Active CN219214778U (en) | 2023-02-08 | 2023-02-08 | Battery pack locking and unlocking system for power exchange station |
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