Quick-change support and electric vehicle

Abstract

The utility model discloses a quick-change support and an electric vehicle, the quick-change support is used for being installed on a vehicle beam of the electric vehicle to fix a battery pack, the quick-change support comprises a cantilever beam, a locking mechanism and a locking judgment mechanism, and the locking mechanism is arranged on the cantilever beam and used for being matched with a locking piece on the battery pack to lock or unlock the battery pack; the locking judgment mechanism extends out of the side face of the cantilever beam and is used for judging whether the battery pack is locked on the quick-changing support or not, the situation that the battery changing process is finished under the condition that the quick-changing support and the battery pack are not locked is avoided, the reliability and safety of battery changing operation are improved, the battery pack is prevented from falling off from the electric vehicle, and the safety of the electric vehicle is improved. And the driving safety of the electric vehicle is ensured. Due to the fact that the side face of the cantilever beam is provided with the free space which is not shielded, the locking judgment mechanism cannot be shielded by other equipment and parts, the working state of the locking judgment mechanism cannot be affected when the locking structure moves, and the situation that whether the battery pack is locked on the quick-change support or not cannot be judged is prevented.

Description

Technical Field

[0001] The utility model relates to the field of electric vehicle battery replacement, in particular to a quick-change bracket and an electric vehicle. Background Art

[0002] Nowadays, electric vehicles are becoming more and more popular among consumers. The energy used by electric vehicles is basically electricity. Electric vehicles need to be charged after the electricity is used up. Due to the limitations of current battery technology and charging technology, it takes a long time to fully charge electric vehicles, which is not as simple and fast as refueling fuel vehicles. Therefore, in order to reduce the waiting time of users, replacing the battery when the electric vehicle's power is running out is an effective means.

[0003] In the prior art, the replacement of the battery pack of an electric vehicle is achieved by detachably connecting the battery pack and the quick-change bracket on the electric vehicle. Specifically, the battery pack and the quick-change bracket are respectively provided with mutually cooperating locking structures, and the connection between the battery pack and the quick-change bracket is achieved by controlling the connection of the two locking structures through the battery replacement equipment. However, due to the positioning error of the electric vehicle or the positioning error of the battery replacement equipment, the battery pack may not be completely locked on the quick-change bracket, so that the battery pack may fall off the electric vehicle, which may easily cause a safety hazard.

[0004] In the prior art, the locking state of the locking mechanism is detected from the bottom of the locking mechanism by a detection device, or the locking state of the locking mechanism is detected by a sensor disposed inside the locking mechanism to determine whether the battery pack is locked on the quick-change bracket. However, the detection device and the sensor are easily blocked by other devices and parts, or the detection device and the sensor cannot detect the locking state of the locking mechanism when the locking structure moves, resulting in the problem of being unable to determine whether the battery pack is locked on the quick-change bracket. Utility Model Content

[0005] The technical problem to be solved by the present invention is to overcome the defects in the prior art that the detection equipment and sensors are easily blocked by other equipment and parts, or the detection equipment and sensors cannot detect the locking state of the locking mechanism when the locking structure moves, resulting in an inability to determine whether the battery pack is locked in the quick-change bracket, and to provide a quick-change bracket and an electric vehicle.

[0006] The utility model solves the above technical problems through the following technical solutions:

[0007] A quick-change bracket is used to be installed on a beam of an electric vehicle to fix a battery pack, the quick-change bracket comprises a cantilever beam, a locking mechanism and a locking determination mechanism, wherein:

[0008] The locking mechanism is disposed on the cantilever beam and is used to cooperate with the locking member on the battery pack to lock or unlock the battery pack;

[0009] The locking determination mechanism extends from a side surface of the cantilever beam, and the locking determination mechanism is used to determine whether the battery pack is locked on the quick-change bracket.

[0010] In this solution, the locking determination mechanism is used to detect whether the battery pack is successfully locked on the quick-change bracket, so as to avoid ending the battery replacement process when the quick-change bracket and the battery pack are not locked, improve the reliability and safety of the battery replacement operation, prevent the battery pack from falling off the electric vehicle, and ensure the safety of the electric vehicle. The locking determination mechanism in this solution extends from the side of the cantilever beam. Since the side of the cantilever beam has an unobstructed free space, the locking determination mechanism will not be blocked by other equipment and parts, and the movement of the locking structure will not affect the working state of the locking determination mechanism. Therefore, it can solve the technical problem that the detection equipment and sensors in the prior art are easily blocked by other equipment and parts, or the detection equipment and sensors in the prior art cannot detect the locking state of the locking mechanism when the locking structure moves, resulting in the inability to determine whether the battery pack is locked on the quick-change bracket.

[0011] Preferably, the cantilever beam extends along the width direction of the electric vehicle, and the cantilever beam is connected to the vehicle beam;

[0012] The lock determination mechanism extends from a side surface of the cantilever beam in the length direction of the electric vehicle, or the lock determination mechanism extends from a side surface of the cantilever beam in the width direction of the electric vehicle.

[0013] In this solution, the locking mechanism is arranged on a cantilever beam extending along the width direction of the electric vehicle, which can reduce the space occupied by the locking mechanism in the length direction of the electric vehicle, thereby reserving more space for the battery pack in the length direction of the electric vehicle, increasing the volume of the battery pack adapted to the electric vehicle, and improving the power of the battery pack.

[0014] Preferably, the locking mechanism comprises a lock base and a locking linkage, the lock base is fixed on the cantilever beam, and the locking linkage is rotatably connected to the lock base to lock or unlock the battery pack;

[0015] The locking determination mechanism includes a moving part and a fixed part, the moving part is connected to the locking linkage part and rotates synchronously with the locking linkage part, the fixed part is fixed on the cantilever beam, and the locking determination mechanism determines whether the battery pack is locked on the quick-change bracket by detecting the relative position between the moving part and the fixed part.

[0016] In this solution, during the battery replacement process, the locking linkage rotates relative to the lock base (i.e., relative to the cantilever beam) to achieve locking and unlocking of the battery pack, and the moving part rotates synchronously with the locking linkage, thereby changing the relative position between the moving part and the fixed part. Thus, by judging the relative position of the moving part and the fixed part, it is determined whether the locking linkage has rotated into place, and then whether the battery pack is locked on the quick-change bracket. Since the moving part is fixed on the locking linkage to achieve synchronous rotation with the locking linkage, there will be no delay or incomplete rotation of the moving part, thereby improving the accuracy of detection and the reliability and safety of the battery replacement operation.

[0017] Preferably, when the distance between the movable part and the fixed part is within a preset distance range, the battery pack can be locked on the quick-change bracket.

[0018] In this solution, the above arrangement can reduce the installation accuracy requirements for the moving parts and the fixed parts, and improve the feasibility of the locking determination operation.

[0019] Preferably, the locking linkage member rotates in a first plane, and the first plane is a plane composed of a height direction of the electric vehicle and a width direction of the electric vehicle;

[0020] When the distance between the moving part and the fixing part in the width direction of the electric vehicle is within a preset distance range, the battery pack can be locked on the quick-change bracket.

[0021] In this solution, the locking linkage part will drive the moving part to move in the width direction of the electric vehicle during the rotation relative to the lock base, thereby determining whether the battery pack is locked successfully by determining whether the distance between the moving part and the fixed part in the width direction of the electric vehicle is within a preset distance range. The above arrangement also enables the identification device to be directly fixed to the battery replacement equipment, so that when the battery is replaced at the bottom of the electric vehicle, the distance between the moving part and the fixed part in the width direction of the electric vehicle can be directly identified, without the need to fix the identification device separately, thus simplifying the structure and reducing costs.

[0022] Preferably, the moving part extends from the side of the cantilever beam; and the quick-change bracket satisfies one or more of the following conditions:

[0023] a1. The cantilever beam is a hollow structure, and the moving part extends out from an opening on one side of the cantilever beam;

[0024] b1. The fixing member is fixedly mounted on the side of the cantilever beam from which the moving member extends.

[0025] In this solution, the movable part is partially arranged inside the cantilever beam to connect with the locking linkage part, and the part of the movable part extending out of the cantilever beam is used for matching and identification with the fixed part to determine whether the battery pack is locked on the quick-change bracket. The hollow cantilever beam provides space for the movable part to move, so that the movable part can move synchronously with the locking linkage part. The fixed part and the movable part are arranged on the same side of the cantilever beam, so that the movable part and the fixed part can jointly use the space on the same side of the cantilever beam, thereby improving space utilization and reducing the possibility of interference with the battery pack.

[0026] Preferably, the locking mechanism includes a first locking mechanism and a second locking mechanism, the moving part includes a first moving part and a second moving part, the first moving part is connected to the locking linkage part of the first locking mechanism, the second moving part is connected to the locking linkage part of the second locking mechanism, and the first moving part and the second moving part cooperate with the same fixed part.

[0027] In this solution, the first movable member and the second movable member share a fixed member, which can simplify the structure of the locking determination mechanism and reduce costs.

[0028] Preferably, the fixing member is disposed between the first moving member and the second moving member;

[0029] Preferably, the quick-change bracket meets one or more of the following conditions:

[0030] a2, the moving member extends from the cantilever beam toward a side of the quick-change bracket outside in the length direction of the electric vehicle;

[0031] b2. The fixing member is fixedly mounted on a side surface of the cantilever beam in the length direction of the electric vehicle facing the outside of the quick-change bracket;

[0032] c2, the fixing member is disposed between the first moving member and the second moving member along the width direction of the electric vehicle.

[0033] In this solution, the moving part and / or the fixed part are arranged on a side of the cantilever beam facing the outside of the quick-change bracket in the length direction of the electric vehicle to prevent the moving part and / or the fixed part from interfering with the battery pack and improve the reliability of the battery replacement operation. The fixed part is arranged between the first moving part and the second moving part, making the layout of the locking detection mechanism more compact, so that the recognition range of the recognition device for identifying the relative position between the moving part and the fixed part is smaller, and the recognition device does not need to be designed to be very large.

[0034] Preferably, the cantilever beam is a hollow structure, and the quick-change bracket satisfies one or more of the following conditions:

[0035] a3, the moving part comprises a first connecting part and a first detecting part which are connected to each other, the first connecting part is arranged inside the cantilever beam and connected to the locking linkage part, and the first detecting part is arranged outside the cantilever beam and used to cooperate with the fixing part;

[0036] b3. The upper end of the lock base is arranged inside the cantilever beam and connected to the cantilever beam, and the lower end of the lock base is arranged outside the cantilever beam and is used to cooperate with the locking piece on the battery pack.

[0037] In this solution, the first connecting part is connected to the locking linkage to realize the synchronous movement of the moving part and the locking linkage, and the first detecting part is used to cooperate with the fixed part for identification to determine whether the battery pack is locked on the quick-change bracket. The hollow cantilever beam provides space for the moving part to move, which is convenient for the moving part to move synchronously with the locking linkage. The fixed part and the moving part are arranged on the same side of the cantilever beam, so that the moving part and the fixed part can jointly utilize the space on the same side of the cantilever beam, improve space utilization, and reduce the possibility of interference with the battery pack. The lock base is partially arranged inside the cantilever beam to reduce the space occupied by the lock base in the height direction of the vehicle, so that the battery pack can be fixed at a higher position of the electric vehicle, reducing the risk of the bottom of the battery pack contacting the ground, and the height dimension of the battery pack can also be designed to be larger, thereby increasing the volume of the battery pack and increasing the power of the battery pack.

[0038] Preferably, the moving part includes a first bending section, a second bending section and a third bending section connected in sequence, the second bending section is bent upward relative to the first bending section, the first bending section forms a first connecting part of the moving part, and the third bending section forms a first detection part of the moving part.

[0039] In this solution, the second bending section raises the position of the first detection part to prevent the first detection part from interfering with other parts of the cantilever beam and the battery swapping equipment, thereby improving the reliability of the battery swapping operation.

[0040] Preferably, the fixing member comprises a fourth bending section and a fifth bending section connected to each other, the fourth bending section forms the second connecting portion, and the fifth bending section forms the second detecting portion;

[0041] The second connecting portion is connected to the cantilever beam, and the second detecting portion cooperates with the first detecting portion.

[0042] In this solution, the above arrangement ensures the connection area between the fixing member and the cantilever beam and the connection strength between the two on the one hand, and also ensures the area of ​​the second detection part on the other hand, making it easy to identify the relative positions of the first detection part and the second detection part.

[0043] Preferably, the cantilever beam is a hollow structure, and a plurality of inspection ports are provided on one end surface of the cantilever beam facing the outside of the quick-change bracket in the length direction of the electric vehicle, and the inspection ports communicate with the inside and outside of the cantilever beam;

[0044] Preferably, the quick-change bracket meets one or more of the following conditions:

[0045] a4. The moving part extends out from the inspection port;

[0046] b4. The inspection port is arranged corresponding to the locking mechanism;

[0047] c4. A sealing plate is detachably connected to the cantilever beam, and the sealing plate is used to seal the inspection port.

[0048] In this solution, the inspection port can be used by technicians to maintain components such as the locking mechanism set inside the cantilever beam, which is convenient for later maintenance. The moving parts extend to the outside of the cantilever beam through the inspection port, and there is no need to open additional through holes on the cantilever beam for the moving parts to pass through, that is, the cantilever beam does not need to reserve too much space for the moving parts, so that the inspection port can be designed to be larger, which is convenient for technicians to operate. The inspection port and the locking mechanism are set correspondingly, which is convenient for technicians to inspect the locking structure. The sealing plate blocks the inspection port to protect the structure inside the cantilever beam.

[0049] Preferably, when the sealing plate is detachably connected to the cantilever beam, the sealing plate is provided with a through hole for the moving member to pass through, and the through hole penetrates through both ends of the electric vehicle in the length direction.

[0050] In this solution, the moving part extends to the outside of the cantilever beam through the inspection port, and there is no need to open a through hole on the cantilever beam for the moving part to pass through. That is, the cantilever beam does not need to reserve too much space for the moving part, so that the inspection port can be designed to be larger, which is convenient for technicians to operate.

[0051] Preferably, the locking mechanism comprises a primary locking mechanism and a secondary locking mechanism, the locking linkage of the primary locking mechanism comprises a locking link, and the locking linkage of the secondary locking mechanism comprises a secondary locking rod;

[0052] The primary locking mechanism comprises at least one primary lock base and at least one primary lock tongue, the lock link is arranged outside the primary lock base and connected to at least one primary lock tongue, and the moving part corresponding to the primary locking mechanism is arranged on the lock link;

[0053] The secondary locking mechanism comprises a secondary lock base and a secondary lock tongue, the secondary lock rod is arranged outside the secondary lock base and connected to the secondary lock tongue, and the moving part corresponding to the secondary locking mechanism is arranged on the secondary lock rod.

[0054] In this solution, the battery pack is locked together by the primary locking mechanism and the secondary locking mechanism to improve the locking effect of the battery pack, prevent the battery pack from falling off due to failure of one of the locking mechanisms, and improve the safety of the electric vehicle. In the case where the primary locking mechanism includes multiple primary lock bases and multiple primary lock tongues, the movable part is directly set on the lock link. On the one hand, it is convenient to connect the movable part and the primary locking mechanism, and on the other hand, each primary lock tongue does not need to be connected to the corresponding movable part, which simplifies the primary locking mechanism and reduces costs. The movable part is connected to the corresponding lock tongue through the locking rod outside the lock base, which is easy to connect and easy to install.

[0055] Preferably, the quick-change bracket meets one or more of the following conditions:

[0056] a5. The secondary locking mechanism further includes a secondary elastic member; the secondary locking rod of the secondary locking mechanism is connected to the primary lock base of the primary locking mechanism through the secondary elastic member;

[0057] b5. The primary locking mechanism further includes a primary elastic member;

[0058] The first-level elastic member is arranged on at least one of the first-level lock bases, and the two ends of the first-level elastic member are respectively connected to the lock link and one of the first-level lock bases; or, the first-level elastic member is arranged on the cantilever beam, and the two ends of the first-level elastic member are respectively connected to the lock link and the cantilever beam.

[0059] In this solution, the primary elastic member is used to reset the lock link, and the secondary elastic member is used to reset the secondary lock rod. One end of the secondary elastic member of the secondary locking mechanism is connected to the primary lock base of the primary locking mechanism, which can shorten the distance between the primary locking mechanism and the secondary locking mechanism, improve the space utilization of the locking mechanism, and is suitable for situations where the space at the connection between the electric vehicle and the battery pack is limited.

[0060] Preferably, the quick-change bracket meets one or more of the following conditions:

[0061] a6. The cantilever beam is a hollow structure, and a sensor is further provided inside the cantilever beam for detecting the position of the locking linkage to determine whether the battery pack is locked on the quick-change bracket;

[0062] b6. The cantilever beam includes a front cantilever beam and a rear cantilever beam, and the front cantilever beam and the rear cantilever beam are arranged on the vehicle beam at intervals along the length direction of the electric vehicle. The front cantilever beam and the rear cantilever beam are both provided with the locking mechanism and the locking determination mechanism, and the battery pack is used to be arranged between the front cantilever beam and the rear cantilever beam.

[0063] In this solution, the sensor is used to determine whether the battery pack is locked on the quick-change bracket at the electric vehicle end, which is convenient for the driver to confirm the locking structure and avoid ending the battery replacement process when the quick-change bracket and the battery pack are not locked, thereby improving the reliability and safety of the battery replacement operation, preventing the battery pack from falling off the electric vehicle, and ensuring the safety of the electric vehicle. The two ends of the battery pack in the length direction of the electric vehicle are connected to the front cantilever beam and the rear cantilever beam respectively to ensure the stability of the battery pack after installation and improve the locking effect of the battery pack.

[0064] An electric vehicle comprises a vehicle beam, a battery pack and the quick-change bracket as described above, wherein the quick-change bracket is connected to the vehicle beam, and the battery pack is locked to the quick-change bracket.

[0065] In this solution, the battery pack is fixed to the electric vehicle through a quick-change bracket to provide power for the electric vehicle.

[0066] The positive and progressive effect of the present invention is that the locking determination mechanism is used to detect whether the battery pack is successfully locked on the quick-change bracket, so as to avoid the end of the battery replacement process when the quick-change bracket and the battery pack are not locked, improve the reliability and safety of the battery replacement operation, prevent the battery pack from falling off the electric vehicle, and ensure the safety of the electric vehicle. The locking determination mechanism in the present invention extends from the side of the cantilever beam. Since the side of the cantilever beam has an unobstructed free space, the locking determination mechanism will not be obstructed by other equipment and parts, and the movement of the locking structure will not affect the working state of the locking determination mechanism. Therefore, it can solve the technical problem that the detection equipment and sensors in the prior art are easily obstructed by other equipment and parts, or the detection equipment and sensors in the prior art cannot detect the locking state of the locking mechanism when the locking structure moves, resulting in the inability to determine whether the battery pack is locked on the quick-change bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] Figure 1 It is a partial structural schematic diagram of an electric vehicle according to an embodiment of the utility model.

[0068] Figure 2 It is a schematic diagram of the three-dimensional structure of the cooperation between the vehicle beam and the quick-change bracket according to one embodiment of the utility model.

[0069] Figure 3 The figure is a three-dimensional structural schematic diagram of a quick-change bracket according to an embodiment of the utility model.

[0070] Figure 4 The figure is a schematic diagram of the three-dimensional structure of the front cantilever beam according to an embodiment of the utility model.

[0071] Figure 5 It is a side structural schematic diagram of a cantilever beam module according to an embodiment of the utility model.

[0072] Figure 6 It is a schematic diagram of the three-dimensional structure of a cantilever beam module according to an embodiment of the utility model.

[0073] Figure 7 This is a schematic diagram of the internal structure of a cantilever beam module according to an embodiment of the utility model.

[0074] Figure 8 This is another schematic diagram of the internal structure of the cantilever beam module according to an embodiment of the present utility model.

[0075] Fig. 9 The figure is a three-dimensional structural diagram of a locking mechanism according to an embodiment of the utility model.

[0076] Fig.10 The figure is a schematic top view of the locking mechanism according to an embodiment of the utility model.

[0077] Description of reference numerals:

[0078] Description of reference numerals:

[0079] Quick-change bracket 11, battery pack 12, vehicle beam 13, fixed beam 21, cantilever beam 22, front cantilever beam 221, rear cantilever beam 222, cantilever beam module 223, reinforcement connection module 224, inspection port 225, sealing plate 226, through hole 2261, locking mechanism 3, lock base 31, locking channel 32, locking linkage 33, locking tongue 34, primary locking mechanism 35, primary lock base 351, primary locking tongue 352, lock link 353, primary elastic member 354, primary elastic member fixing seat 35 5. Secondary locking mechanism 36. Secondary lock base 361. Secondary lock tongue 362. Secondary lock rod 363. Secondary elastic member 364. Locking determination mechanism 4. Moving member 41. First connecting portion 411. First detecting portion 412. First bending section 413. Second bending section 414. Third bending section 415. First moving member 416. Second moving member 417. Fixed member 42. Fourth bending section 421. Fifth bending section 422. Second connecting portion 423. Second detecting portion 424. Sensor 5. DETAILED DESCRIPTION

[0080] The present invention is further described below by way of embodiments, but the present invention is not limited to the scope of the embodiments.

[0081] This embodiment provides an electric vehicle, such as Figure 1 and Figure 2 As shown, the electric vehicle includes a vehicle body (not fully shown in the figure), a quick-change bracket 11 and a battery pack 12.

[0082] like Figure 1 As shown, the vehicle body includes a vehicle beam 13, and the vehicle beam 13 is along the length direction of the electric vehicle ( Figure 1The beams 13 extend in the X direction of the vehicle and are arranged at the chassis of the vehicle body to support the entire electric vehicle. In this embodiment, there are two beams 13, both of which extend in the length direction of the electric vehicle and in the width direction ( Figure 1 In the Y direction of the vehicle beam 13, the vehicle beams 13 are arranged at intervals to better support the entire electric vehicle. In other alternative embodiments, the number of the vehicle beams 13 can be designed according to actual needs.

[0083] like Figure 1 As shown, the quick-change bracket 11 is installed on the vehicle beam 13, and the battery pack 12 is locked to the quick-change bracket 11. Specifically, the quick-change bracket 11 is set at the chassis position of the vehicle body to connect with the vehicle beam 13. The quick-change bracket 11 is used to fix the battery pack 12 to ensure that the battery pack 12 can stably supply power to the electric vehicle. The battery pack 12 is located at the lower end of the quick-change bracket 11 and is locked to the quick-change bracket 11 in a detachable connection. Then, the quick-change bracket 11 is used to realize a detachable connection with the vehicle body to realize the replacement of the battery pack 12.

[0084] During the battery replacement process, the battery replacement equipment enters the chassis of the electric vehicle from both sides of the electric vehicle, installs and removes the battery pack 12 from the bottom of the electric vehicle, thereby installing the battery pack 12 on the quick-change bracket 11, or removing the battery pack 12 from the quick-change bracket 11, to realize the lateral battery replacement operation of the electric vehicle.

[0085] like Figure 1-Figure 9 As shown, the quick-change bracket 11 includes a cantilever beam 22, a locking mechanism 3 and a locking determination mechanism 4. The locking mechanism 3 is arranged on the cantilever beam 22. The locking mechanism 3 is used to cooperate with the locking member on the battery pack 12 to lock or unlock the battery pack 12, thereby realizing a detachable connection between the battery pack 12 and the quick-change bracket 11. The locking determination mechanism 4 extends from the side of the cantilever beam 22. The locking determination mechanism 4 is used to determine whether the battery pack 12 is locked on the quick-change bracket 11, so as to avoid ending the battery replacement process when the quick-change bracket 11 and the battery pack 12 are not locked, improve the reliability and safety of the battery replacement operation, prevent the battery pack 12 from falling off the electric vehicle, and ensure the safety of the electric vehicle.

[0086] Furthermore, the locking determination mechanism 4 in this embodiment extends out from the side of the cantilever beam 22. Since the side of the cantilever beam 22 has an unobstructed free space, the locking determination mechanism 4 will not be obstructed by other devices and parts, and the movement of the locking structure in the locking mechanism 3 will not affect the working state of the locking determination mechanism 4. Therefore, it can solve the technical problem that the detection equipment and sensors in the prior art are easily obstructed by other equipment and parts, or the detection equipment and sensors in the prior art cannot detect the locking state of the locking mechanism when the locking structure moves, resulting in the inability to determine whether the battery pack 12 is locked in the quick-change bracket 11.

[0087] Specifically, Figure 2-Figure 4 As shown, the cantilever beam 22 extends along the width direction of the electric vehicle and is arranged across the vehicle beam 13 in the width direction of the electric vehicle. The cantilever beam 22 is used to connect with the battery pack 12 to fix the battery pack 12 on the electric vehicle. In other embodiments of the prior art, the cantilever beam 22 can also extend along the length direction of the electric vehicle. In this state, the cantilever beam 22 does not cross the vehicle beam 13. Therefore, compared with the prior art, this embodiment extends the cantilever beam 22 along the width direction of the electric vehicle and is arranged across the vehicle beam 13 in the width direction of the electric vehicle, so that the vehicle beam 13 can share part of the weight of the cantilever beam 22 and the battery pack 12, so that the cantilever beam 22 can be stably installed on the chassis of the electric vehicle and reduce the bearing pressure of the locking mechanism 3.

[0088] like Figure 2 and Figure 4 As shown, the cantilever beam 22 includes a cantilever beam module 223 and a reinforcement connection module 224. The cantilever beam module 223 is arranged on the side of the vehicle beam 13 and is connected to the battery pack 12. The reinforcement connection module 224 is arranged on the upper part of the vehicle beam 13, and the cantilever beam module 223 is connected to the reinforcement connection module 224.

[0089] Specifically, Figure 2 and Figure 4 As shown, the cantilever beam 22 includes two cantilever beam modules 223 symmetrically arranged relative to the vehicle beam 13, the two cantilever beam modules 223 are respectively arranged on both sides of the vehicle beam 13 and are respectively connected to the vehicle beam 13, specifically, the two cantilever beam modules 223 are respectively arranged on the sides of the two vehicle beams 13 that are away from each other in the width direction of the electric vehicle, and are connected to the vehicle beams 13 on the corresponding sides, and the two cantilever beam modules 223 are symmetrically arranged about the middle position of the two vehicle beams 13. In this embodiment, the cantilever beam modules 223 are arranged on both sides of the vehicle beam 13, so that both sides of the vehicle beam 13 can evenly bear the force from the cantilever beam modules 223, thereby improving the connection strength between the vehicle beam 13 and the quick-change bracket 11.

[0090] Furthermore, if Figure 4 As shown, the two cantilever beam modules 223 of the cantilever beam 22 are both provided with corresponding locking mechanisms 3 and locking determination mechanisms 4, that is, the two cantilever beam modules 223 of the cantilever beam 22 can both be detachably connected with the battery pack 12 through the corresponding locking mechanisms 3 to improve the locking strength of the battery pack 12 and ensure the stability of the battery pack 12 after installation.

[0091] In other alternative embodiments, the cantilever beam 22 may also include only one cantilever beam module 223. In this state, the cantilever beam module 223 may be connected to the outer side of one of the beams 13 along the width direction of the electric vehicle (i.e., the side of one of the beams 13 away from the other beam 13 in the width direction of the electric vehicle), or when the distance between the two beams 13 in the width direction of the electric vehicle is sufficient and there is no interference from other components between the two beams 13, the cantilever beam module 223 may also be arranged between the two beams 13 in the width direction of the electric vehicle. In this embodiment, the cantilever beam module 223 is arranged on the side of the two beams 13 that are away from each other in the width direction of the electric vehicle because the distance between the two beams 13 of the electric vehicle in the width direction of the electric vehicle is usually short, and there is not enough space to install the cantilever beam module 223. The cantilever beam module 223 is arranged on the outer side of the beam 13 to facilitate the installation of the cantilever beam module 223, and it is also convenient to install the battery pack 12 on both sides of the electric vehicle to realize the lateral battery replacement operation of the electric vehicle.

[0092] Furthermore, if Figure 5-Figure 7 As shown, the cantilever beam 22 in this embodiment is a hollow structure, specifically the cantilever beam module 223 is a hollow structure, so the cantilever beam 22 is light in weight, and it is also convenient to install other structural parts (such as the locking mechanism 3, etc.) inside the cantilever beam module 223. In other alternative embodiments, the cantilever beam module 223 can also be a solid member.

[0093] Furthermore, if Figure 6 As shown, the cantilever beam 22 is provided with a plurality of inspection ports 225 on one end surface facing the outside of the quick-change bracket 11 in the length direction of the electric vehicle. The inspection ports 225 are connected at both ends in the length direction of the electric vehicle to connect the inside and outside of the cantilever beam 22, so as to facilitate technicians to maintain other structural parts (such as the locking mechanism 3, etc.) arranged inside the cantilever beam 22 and facilitate subsequent maintenance. In addition, the inspection ports 225 can further reduce the weight of the cantilever beam 22.

[0094] In this solution, the inspection port 225 is provided on the cantilever beam module 223, and the inspection port 225 connects the inside and the outside of the cantilever beam module 223. There are multiple inspection ports 225 on a single cantilever beam module 223, and the multiple inspection ports 225 are arranged at intervals along the width direction of the electric vehicle. In other alternative embodiments, the number of the inspection port 225 on a single cantilever beam module 223 may also be one. In this embodiment, multiple independent inspection ports 225 are provided to replace a single larger inspection port 225 in order to reduce the risk of lower strength of the cantilever beam module 223 at the inspection port 225 due to the provision of a single larger inspection port 225.

[0095] Furthermore, if Figure 5As shown, a sealing plate 226 is detachably connected to the cantilever beam 22, and the sealing plate 226 is used to block the inspection port 225 to protect the structure inside the cantilever beam 22. Specifically, the sealing plate 226 is fixed on the cantilever beam module 223, and the number of sealing plates 226 in this embodiment is the same as the number of inspection ports 225, both of which are multiple, and one sealing plate 226 blocks one inspection port 225. In other alternative embodiments, a sealing plate 226 of a larger size can also be used to block multiple inspection ports 225 at the same time. In this embodiment, multiple independent sealing plates 226 are used to reduce the total weight of the sealing plates 226 to further reduce the weight of the cantilever beam 22. In addition, the sealing plate 226 can be made of a lighter material to reduce the weight of the cantilever beam 22, and the sealing plate 226 can also be made of a transparent material so that the technician can judge the state of the structural parts in the cantilever beam 22 without removing the sealing plate 226.

[0096] In other alternative implementations, the sealing plate 226 may not be provided, and the inspection opening 225 may be directly exposed to the external environment.

[0097] Furthermore, if Figure 4 As shown, the reinforcement connection module 224 is arranged across the vehicle beam 13, and the two cantilever beam modules 223 are respectively arranged on both sides of the reinforcement connection module 224. Specifically, the reinforcement connection module 224 is arranged across the two vehicle beams 13 and connected to the upper ends of the two vehicle beams 13. The two cantilever beam modules 223 are connected to the two ends of the reinforcement connection module 224 in the width direction of the electric vehicle to ensure the relative position accuracy of the two cantilever beam modules 223 and improve the success rate of battery replacement. Among them, the reinforcement connection module 224 and the vehicle beam 13 are connected by a detachable connection method such as bolt connection.

[0098] In this embodiment, the quick-change bracket 11 is further designed with a reinforcement connection module 224 on the basis of the cantilever beam module 223, which can enhance the structural strength of the quick-change bracket 11. The cantilever beam module 223 is arranged on the side of the vehicle beam 13, and the reinforcement connection module 224 is arranged on the upper part of the vehicle beam 13, so that the side and upper end surface of the vehicle beam 13 can be used as the area connected to the quick-change bracket 11, thereby enhancing the connection strength between the quick-change bracket 11 and the vehicle beam 13, so that the quick-change bracket 11 can support the battery pack 12 more stably.

[0099] In other alternative embodiments, the cantilever beam 22 may not include the reinforcement connection module 224 , that is, the two cantilever beam modules 223 of the cantilever beam 22 are relatively independently arranged.

[0100] like Figure 2 and Figure 3As shown, the cantilever beam 22 in this embodiment includes a front cantilever beam 221 and a rear cantilever beam 222. The front cantilever beam 221 and the rear cantilever beam 222 both extend in the width direction of the electric vehicle and are arranged on the vehicle beam 13 at intervals in the length direction of the electric vehicle. The front cantilever beam 221 and the rear cantilever beam 222 span the two vehicle beams 13 in the width direction of the electric vehicle. The battery pack 12 is arranged between the front cantilever beam 221 and the rear cantilever beam 222 and is located below the two vehicle beams 13. The two ends of the battery pack 12 in the length direction of the electric vehicle are respectively connected to the locking mechanisms 3 on the front cantilever beam 221 and the rear cantilever beam 222 to ensure the stability of the battery pack 12 after installation and improve the locking effect of the quick-change bracket 11 on the battery pack 12.

[0101] In this embodiment, if Figure 3 As shown, the front cantilever beam 221 and the rear cantilever beam 222 are both provided with corresponding locking mechanisms 3 and locking determination mechanisms 4, and the front cantilever beam 221 and the rear cantilever beam 222 use the same locking method to achieve a detachable connection between the battery pack 12 and the quick-change bracket 11. In this embodiment, the locking mechanism 3 is arranged on the cantilever beam 22 extending in the width direction of the electric vehicle, which can reduce the space occupied by the locking mechanism 3 in the length direction of the electric vehicle, so that more space can be reserved for the battery pack 12 in the length direction of the electric vehicle, thereby increasing the volume of the battery pack 12 adapted to the electric vehicle and improving the power of the battery pack 12.

[0102] In other alternative embodiments, if the cantilever beam 22 extends along the length direction of the electric vehicle, in this state, the front cantilever beam 221 and the rear cantilever beam 222 can be spaced apart in the width direction of the electric vehicle and neither of them crosses the vehicle beam 13 .

[0103] In other alternative embodiments, the quick-change bracket 11 may include only the front cantilever beam 221 or only the rear cantilever beam 222 . In this state, the battery pack 12 is only connected to the front cantilever beam 221 or only to the rear cantilever beam 222 .

[0104] like Figure 3 and Figure 4 As shown, the locking determination mechanism 4 in this embodiment extends from one side of the cantilever beam 22 in the length direction of the electric vehicle. Specifically, since the battery pack 12 is located between the front cantilever beam 221 and the rear cantilever beam 222 in the length direction of the electric vehicle, the locking determination mechanism 4 extends from one side of the cantilever beam 22 in the length direction of the electric vehicle toward the outside of the quick-change bracket 11 to avoid interference with the battery pack 12. And the side of the cantilever beam 22 in the length direction of the electric vehicle toward the outside of the quick-change bracket 11 is not blocked by other equipment and parts, so that the locking determination mechanism 4 will not be blocked, and the identification device on the battery exchange device can clearly identify the position of the locking determination mechanism 4, thereby improving the detection accuracy.

[0105] In other alternative embodiments, the locking determination mechanism 4 may also extend from a side of the cantilever beam 22 along the width direction of the electric vehicle, for example, from a side of the cantilever beam 22 along the width direction of the electric vehicle toward the outside of the quick-change bracket 11.

[0106] Furthermore, if Figure 2 and Figure 3 As shown, the quick-change bracket 11 also includes a fixed beam 21, and the fixed beam 21 is connected to the cantilever beam 22 to connect the quick-change bracket 11 into a whole. Specifically, the fixed beam 21 is located between the front cantilever beam 221 and the rear cantilever beam 222 in the length direction of the electric vehicle and is located above the battery pack 12. The two ends of the fixed beam 21 in the length direction of the electric vehicle are respectively connected to the front cantilever beam 221 and the rear cantilever beam 222, so that the quick-change bracket 11 is connected into a whole, ensuring the relative position accuracy of each part in the quick-change bracket 11 and improving the success rate of battery replacement. It can also be used to limit the relative position between the front cantilever beam 221 and the rear cantilever beam 222, thereby preventing the front cantilever beam 221 and the rear cantilever beam 222 from moving in position during the driving of the electric vehicle, and improving the stability of the battery pack 12 installed on the quick-change bracket 11.

[0107] In other alternative embodiments, if the cantilever beam 22 extends along the length direction of the electric vehicle, the front cantilever beam 221 and the rear cantilever beam 222 are spaced apart in the width direction of the electric vehicle. In this state, the fixed beam 21 is located between the front cantilever beam 221 and the rear cantilever beam 222 in the width direction of the electric vehicle, and the two ends of the fixed beam 21 in the width direction of the electric vehicle are respectively connected to the front cantilever beam 221 and the rear cantilever beam 222.

[0108] In other alternative embodiments, the quick-change bracket 11 may not include the fixed beam 21 , that is, the front cantilever beam 221 and the rear cantilever beam 222 are relatively independently arranged.

[0109] like Figure 5-Figure 9 As shown, the locking mechanism 3 includes a lock base 31 and a locking linkage 33. The lock base 31 is fixed on the cantilever beam 22. The locking linkage 33 is rotatably connected to the lock base 31 to lock or unlock the battery pack 12. Specifically, as Fig. 9 As shown, the upper end of the lock base 31 is arranged inside the cantilever beam 22 and connected to the cantilever beam 22, and the lower end of the lock base 31 is arranged outside the cantilever beam 22 and is used to cooperate with the locking member on the battery pack 12. The lock base 31 is partially arranged inside the cantilever beam 22, which can reduce the space occupied by the lock base 31 in the height direction of the vehicle, so that the battery pack 12 can be fixed at a higher position of the electric vehicle, reducing the risk of the bottom of the battery pack 12 contacting the ground, and can also design the height dimension of the battery pack 12 to be larger, increase the volume of the battery pack 12, and increase the power of the battery pack 12.

[0110] The lock base 31 in this embodiment is detachably connected to the cantilever beam module 223 by bolts. In other alternative embodiments, other detachable or non-detachable connection methods can also be used to achieve the connection between the lock base 31 and the cantilever beam module 223. The detachable connection method in this embodiment is used because the connection difficulty is low on the one hand, and on the other hand, when one of the lock base 31 and the cantilever beam module 223 needs to be replaced, only the damaged part can be replaced without replacing both, thereby reducing costs.

[0111] In other alternative embodiments, the lock base 31 may not extend into the interior of the cantilever beam module 223 , and the lock base 31 may be fixed as a whole on the lower end surface of the cantilever beam module 223 .

[0112] Furthermore, the inspection port 225 is arranged corresponding to the locking mechanism 3 to facilitate technicians to inspect the locking structure. In other alternative embodiments, the inspection port 225 may not be arranged directly opposite the locking mechanism 3, and the specific location of the inspection port 225 can enable technicians to inspect the internal structure of the cantilever beam 22.

[0113] like Fig. 9 As shown, the lower end of the lock base 31 is provided with a lock channel 32 for the lock member of the battery pack 12 to enter, and the lock mechanism 3 also includes a lock tongue 34, which is movably connected to the lock base 31, and the lower end of the lock tongue 34 is arranged in the lock channel 32 to open or close the entrance of the lock channel 32. The upper end of the lock tongue 34 extends out of the lock channel 32 to engage with the lock linkage 33, and the lock linkage 33 can drive the lock tongue 34 to rotate under the action of the unlocking mechanism of the battery exchange device to open or close the entrance of the lock channel 32.

[0114] Furthermore, if Figure 7-Figure 9 As shown, the locking mechanism 3 in this embodiment includes a primary locking mechanism 35 and a secondary locking mechanism 36 .

[0115] like Fig. 9 As shown, the primary locking mechanism 35 includes at least one primary lock base 351 and at least one primary lock tongue 352, and the locking linkage 33 of the primary locking mechanism 35 includes a lock link 353, which is arranged outside the primary lock base 351 and connected to at least one primary lock tongue 352. Specifically, the primary locking mechanism 35 in this embodiment includes a plurality of primary lock bases 351 and a plurality of primary lock tongues 352, the number of primary lock bases 351 and primary lock tongues 352 is the same and they are arranged one by one, the lock link 353 is arranged at the upper end of the primary lock base 351 and is simultaneously connected to the upper ends of the plurality of primary lock tongues 352, so as to realize the synchronous movement of the plurality of primary lock tongues 352.

[0116] In other alternative embodiments, the primary locking mechanism 35 may also only include a primary lock base 351 and a primary lock tongue 352, which can be specifically designed according to actual needs.

[0117] In other alternative embodiments, the multiple locking tongues 34 in the primary locking mechanism 35 may not be connected to each other through the lock link 353, but may be independently connected to the corresponding locking rods.

[0118] like Figure 8 and Fig. 9 As shown, the primary locking mechanism 35 also includes a primary elastic member 354, which is disposed on the cantilever beam 22, and the two ends of the primary elastic member 354 are respectively connected to the lock link 353 and the cantilever beam 22. Specifically, the primary locking mechanism 35 also includes a primary elastic member fixing seat 355, which is fixed on the cantilever beam module 223 and located between the two primary lock bases 351, and the two ends of the primary elastic member 354 are respectively connected to the lock link 353 and the primary elastic member fixing seat 355, so as to realize the connection between the primary elastic member 354 and the cantilever beam 22, so as to realize the reset of the lock link 353. At the same time, the cantilever beam 22 applies a traction force to the lock link 353 through the primary elastic member fixing seat 355 and the primary elastic member 354, so as to prevent the lock link 353 from being in an unlocked state due to the bumping of the vehicle during driving.

[0119] Furthermore, if Fig.10 As shown, this embodiment includes two primary elastic members 354 and two primary elastic member fixing seats 355. The two primary elastic members 354 are respectively arranged on both sides of the lock link 353 in the length direction of the electric vehicle, and the two primary elastic member fixing seats 355 are respectively arranged on both sides of the lock link 353 in the length direction of the electric vehicle. The two primary elastic members 354 and the two primary elastic member fixing seats 355 are connected one by one to improve the resetting ability of the lock link 353.

[0120] In other alternative embodiments, the primary elastic member fixing seat 355 may not be directly fixed on the cantilever beam module 223 , but may be directly fixed on the primary lock base 351 .

[0121] In other alternative embodiments, the primary elastic member fixing seat 355 may not be provided, and the primary elastic member 354 is provided on at least one primary lock base 351. In this state, one end of the primary elastic member 354 is connected to the lock link 353, and the other end of the primary elastic member 354 is directly connected to the primary lock base 351, so that the primary lock base 351 applies a traction force to the lock link 353 through the primary elastic member 354 to prevent the lock link 353 from being in an unlocked state due to the bumps of the vehicle during driving. Fig. 9As shown, the primary elastic member 354 can be connected to one of the two primary lock bases 351 driven by the lock link 353.

[0122] During the battery swapping process, the unlocking mechanism on the battery swapping device abuts against the lock link 353, so that the lock link 353 is displaced in the width direction and the height direction of the electric vehicle. During the movement, the lock link 353 drives the multiple first-level lock tongues 352 to rotate synchronously to open the entrances of the locking channels 32 of the multiple first-level lock bases 351, so that the locking parts of the battery pack 12 can move into or out of the locking channels 32 through the entrances of the locking channels 32, thereby locking or unlocking the battery pack 12. After the battery swapping is completed, the unlocking mechanism on the battery swapping device is disengaged from the lock link 353, and the lock link 353 is reset under the action of the first-level elastic member 354, thereby driving the multiple first-level lock tongues 352 to rotate in the opposite direction to close the entrance of the locking channel 32, thereby locking the locking parts of the battery pack 12 in the locking channel 32.

[0123] like Fig. 9 As shown, the secondary locking mechanism 36 includes a secondary lock base 361 and a secondary lock tongue 362. The locking linkage 33 of the secondary locking mechanism 36 includes a secondary lock rod 363. The secondary lock rod 363 is arranged outside the secondary lock base 361 and connected to the secondary lock tongue 362. The primary locking mechanism 35 and the secondary locking mechanism 36 in this embodiment are two independent locking mechanisms 3. In this embodiment, the primary locking mechanism 35 and the secondary locking mechanism 36 are used to jointly lock the battery pack 12 to improve the locking effect of the battery pack 12, prevent the battery pack 12 from falling off due to failure of one of the locking mechanisms 3, and improve the driving safety of the electric vehicle.

[0124] Furthermore, the secondary locking mechanism 36 further includes a secondary elastic member 364, and the secondary locking rod 363 of the secondary locking mechanism 36 is connected to the primary lock base 351 of the primary locking mechanism 35 through the secondary elastic member 364. Specifically, the secondary elastic member 364 is used to achieve the reset of the secondary locking rod 363, one end of the secondary elastic member 364 is connected to the secondary locking rod 363, and the other end of the secondary locking rod 363 is connected to the primary lock base 351, so as to shorten the distance between the primary locking mechanism 35 and the secondary locking mechanism 36, improve the space utilization of the locking mechanism 3, and is suitable for the case where the space at the connection between the electric vehicle and the battery pack 12 is limited.

[0125] In other alternative embodiments, the secondary elastic member 364 may not be directly connected to the primary lock base 351, and a secondary elastic member fixing seat may be designed to fix the secondary elastic member 364. The secondary elastic member fixing seat may be directly fixed to the cantilever beam module 223, or directly fixed to the primary lock base 351 or the secondary lock base 361. The specific structure of the secondary elastic member fixing seat may be designed with reference to the structure of the primary elastic member fixing seat 355.

[0126] During the battery swapping process, the unlocking mechanism on the battery swapping device abuts against the secondary lock rod 363, so that the secondary lock rod 363 is displaced in the width direction and the height direction of the electric vehicle. The secondary lock rod 363 drives the secondary lock tongue 362 to rotate synchronously during the movement to open the entrance of the locking channel 32 of the secondary lock base 361, so that the locking member of the battery pack 12 can move into or out of the locking channel 32 through the entrance of the locking channel 32, thereby achieving the locking or unlocking of the battery pack 12. After the battery swapping is completed, the unlocking mechanism on the battery swapping device disengages from the secondary lock rod 363, and the secondary lock rod 363 is reset under the action of the secondary elastic member 364, thereby driving the secondary lock tongue 362 to rotate in the opposite direction to close the entrance of the locking channel 32, thereby locking the locking member of the battery pack 12 in the locking channel 32.

[0127] like Figure 5-Figure 9 As shown, the locking determination mechanism 4 includes a moving part 41 and a fixed part 42. The moving part 41 is connected to the locking linkage part 33 and rotates synchronously with the locking linkage part 33. The fixed part 42 is fixed on the cantilever beam 22. The locking determination mechanism 4 determines whether the battery pack 12 is locked on the quick-change bracket 11 by detecting the relative position between the moving part 41 and the fixed part 42.

[0128] Specifically, during the battery replacement process, since the locking linkage 33 rotates in the first plane (the first plane is a plane composed of the height direction of the electric vehicle and the width direction of the electric vehicle), the locking linkage 33 will be displaced in the width direction and the height direction of the electric vehicle relative to the cantilever beam module 223, so that the moving part 41 fixed on the locking linkage 33 can also be displaced in the width direction and the height direction of the electric vehicle relative to the cantilever beam module 223. Since the fixed part 42 is fixed on the cantilever beam module 223, the moving part 41 can be displaced in the width direction and the height direction of the electric vehicle relative to the fixed part 42. This embodiment determines whether the locking linkage 33 drives the lock tongue 34 to rotate in place by identifying the relative positions of the moving part 41 and the fixed part 42, that is, whether the lock tongue 34 completely closes the entrance of the locking channel 32, and then determines whether the battery pack 12 is locked on the quick-change bracket 11.

[0129] Among them, when the distance between the moving part 41 and the fixed part 42 is within the preset distance range, it is judged that the battery pack 12 can be locked on the quick-change bracket 11. Specifically, the battery exchange equipment is provided with an identification device (specifically, it can be a camera or other structure) for identifying the distance between the moving part 41 and the fixed part 42 in the width direction of the electric vehicle. When the distance between the moving part 41 and the fixed part 42 in the width direction of the electric vehicle is within the preset distance range, it is judged that the battery pack 12 can be locked on the quick-change bracket 11. Compared with a fixed preset distance, the preset distance range can reduce the installation accuracy requirements for the moving part 41 and the fixed part 42, and improve the feasibility of the locking judgment operation.

[0130] In other alternative embodiments, the identification device may not be fixed on the battery exchange device, but may be fixed in other areas that are convenient for identifying the relative positions of the movable part 41 and the fixed part 42.

[0131] In other alternative embodiments, the identification device may not determine whether the battery pack 12 is locked successfully by identifying the distance between the moving part 41 and the fixing part 42 in the width direction of the electric vehicle. It may also determine whether the battery pack 12 is locked successfully by identifying the distance between the moving part 41 and the fixing part 42 in the height direction of the electric vehicle, or simultaneously identify the distance between the moving part 41 and the fixing part 42 in the width direction of the electric vehicle and the distance between the moving part 41 and the fixing part 42 in the height direction of the electric vehicle to jointly determine whether the battery pack 12 is locked successfully. The identification device of the present embodiment only identifies the distance between the movable part 41 and the fixed part 42 in the width direction of the electric vehicle because the identification device is fixed on the battery swapping device, and the battery swapping device is located below the quick-change bracket 11 (that is, the battery swapping device is located below the movable part 41 and the fixed part 42). Therefore, it is inconvenient to identify the distance between the movable part 41 and the fixed part 42 in the height direction of the electric vehicle. Therefore, when replacing the battery at the bottom of the electric vehicle, the distance between the movable part 41 and the fixed part 42 in the width direction of the electric vehicle can be directly identified without fixing the identification device separately, thereby simplifying the structure and reducing costs.

[0132] In addition, since the movable part 41 is fixed on the locking linkage part 33 to achieve synchronous rotation with the locking linkage part 33, there will be no delay or incomplete rotation of the movable part 41. Even when the locking linkage part 33 moves, the identification device on the battery exchange equipment can determine the locking state of the battery pack 12 by real-time monitoring of the positional relationship between the movable part 41 and the fixed part 42, thereby improving the detection accuracy and improving the reliability and safety of the battery exchange operation.

[0133] like Fig. 9As shown, the moving part 41 extends from the side of the cantilever beam 22. Specifically, the moving part 41 extends from a side of the cantilever beam 22 toward the outside of the quick-change bracket 11 in the length direction of the electric vehicle to prevent the moving part 41 from interfering with the battery pack 12 and improve the reliability of the battery replacement operation.

[0134] In other alternative embodiments, without interfering with the battery pack 12, the movable member 41 may extend from a side of the cantilever beam 22 in the length direction of the electric vehicle toward the inside of the quick-change bracket 11, or the movable member 41 may extend from the side of the cantilever beam 22 in the width direction of the electric vehicle.

[0135] Furthermore, the cantilever beam 22 is provided with an opening for the moving part 41 to pass through on one side surface facing the outside of the quick-change bracket 11 in the length direction of the electric vehicle, and the moving part 41 extends from the opening to the outside of the cantilever beam 22, so that the part of the moving part 41 located inside the cantilever beam 22 can be connected with the locking linkage 33, and the part of the moving part 41 located outside the cantilever beam 22 can be matched and identified with the fixing part 42 to determine whether the battery pack 12 is locked on the quick-change bracket 11. The hollow cantilever beam 22 provides space for the moving part 41 to move, so that the moving part 41 can move synchronously with the locking linkage 33.

[0136] Specifically, the movable part 41 extends out from the inspection port 225, and a through hole 2261 is provided on the sealing plate 226 for the movable part 41 to pass through. The through hole 2261 passes through both ends of the electric vehicle in the length direction. The movable part 41 extends out from the inspection port 225 and the through hole 2261 to the outside of the cantilever beam module 223 in turn, so that there is no need to provide an additional through hole 2261 on the cantilever beam 22 for the movable part 41 to pass through, that is, the cantilever beam 22 does not need to reserve too much space for the movable part 41, so that the inspection port 225 can be designed to be larger, which is convenient for technicians to operate.

[0137] In other alternative embodiments, the moving member 41 may not extend from the inspection opening 225 , and an opening for the moving member 41 to extend may be additionally provided on the cantilever beam module 223 .

[0138] like Figure 6-Figure 9 As shown, the moving member 41 includes a first connecting portion 411 and a first detecting portion 412 connected to each other. The first connecting portion 411 is disposed inside the cantilever beam 22 and connected to the locking linkage member 33 to achieve synchronous movement of the moving member 41 and the locking linkage member 33. The first detecting portion 412 is disposed outside the cantilever beam 22 and is used to cooperate with the fixing member 42 to determine whether the battery pack 12 is locked on the quick-change bracket 11.

[0139] Specifically, the moving member 41 in this embodiment is Z-shaped, and the moving member 41 includes a first bending section 413, a second bending section 414 and a third bending section 415 connected in sequence, the second bending section 414 is bent upward relative to the first bending section 413, the first bending section 413 forms the first connecting portion 411 of the moving member 41 to connect with the locking linkage 33, and the third bending section 415 forms the first detection portion 412 of the moving member 41 to cooperate with the fixing member 42. The second bending section 414 raises the position of the first detection portion 412 to prevent the first detection portion 412 from interfering with other parts of the cantilever beam 22 and the battery swapping equipment, thereby improving the reliability of the battery swapping operation.

[0140] In other alternative embodiments, when the cantilever beam 22 is a solid member, the moving members 41 are all disposed outside the cantilever beam 22 , and no opening is disposed on the cantilever beam 22 for the moving members 41 to pass through.

[0141] In other alternative embodiments, the moving member 41 may also be a member of other shapes.

[0142] like Figure 5 and Figure 6 As shown, the fixing member 42 is fixed to the side of the cantilever beam 22 from which the moving member 41 extends, that is, the fixing member 42 and the moving member 41 are arranged on the same side of the cantilever beam 22, so that the moving member 41 and the fixing member 42 can jointly use the space on the same side of the cantilever beam 22, thereby improving space utilization and reducing the possibility of interference with the battery pack 12. Specifically, the fixing member 42 is fixed to a side surface of the cantilever beam 22 facing the outside of the quick-change bracket 11 in the length direction of the electric vehicle to prevent the moving member 41 from interfering with the battery pack 12 and improve the reliability of the battery replacement operation.

[0143] In other alternative embodiments, the fixing member 42 may not be fixed to the side of the cantilever beam 22 from which the movable member 41 extends. For example, the fixing member 42 may be fixed to a side of the cantilever beam 22 away from the extending end of the movable member 41 in the length direction of the electric vehicle, or may be fixed to the side of the cantilever beam 22 in the width direction of the electric vehicle.

[0144] like Fig. 9As shown, the fixing member 42 in this embodiment is an inverted L-shaped structure, and the fixing member 42 includes a fourth bending section 421 and a fifth bending section 422 that are connected to each other. The fourth bending section 421 forms a second connecting portion 423, and the second connecting portion 423 is connected to the cantilever beam 22 to achieve the fixation of the fixing member 42 on the cantilever beam module 223. The fifth bending section 422 forms a second detection portion 424, and the second detection portion 424 cooperates with the first detection portion 412 to determine whether the battery pack 12 is locked on the electric vehicle. The inverted L-shaped fixing member 42, on the one hand, ensures the connection area between the fixing member 42 and the cantilever beam 22, and ensures the connection strength between the two. On the other hand, it also ensures the area of ​​the second detection portion 424, which facilitates the identification of the relative positions of the first detection portion 412 and the second detection portion 424.

[0145] Furthermore, if Fig. 9 As shown, the moving member 41 in the present embodiment comprises a first moving member 416 and a second moving member 417, wherein the first moving member 416 is connected to the locking linkage member 33 of the first locking mechanism, and the second moving member 417 is connected to the locking linkage member 33 of the second locking mechanism. Specifically, the first moving member 416 corresponding to the primary locking mechanism 35 is arranged on the locking link 353 to move synchronously with the locking link 353 of the first locking mechanism, and the second moving member 417 corresponding to the secondary locking mechanism 36 is arranged on the secondary locking rod 363 to move synchronously with the second locking rod of the second locking mechanism. The first moving member 416 is connected to the primary locking tongue 352 by the locking link 353 outside the primary lock base 351, and the second moving member 417 is connected to the secondary locking tongue 362 by the secondary locking rod 363 outside the secondary lock base 361, and the connection difficulty is low and easy to install.

[0146] In this embodiment, since the first-level locking mechanism 35 includes multiple first-level lock bases 351 and multiple first-level lock tongues 352, the first movable member 416 is directly fixed on the lock link 353. On the one hand, it is convenient to connect the first movable member 416 and the first-level locking mechanism 35. On the other hand, there is no need for each first-level lock tongue 352 to be connected to the corresponding first movable member 416, thereby simplifying the first-level locking mechanism 35 and reducing costs.

[0147] Furthermore, if Figure 6As shown, the fixing member 42 is disposed between the first movable member 416 and the second movable member 417, and the first movable member 416 and the second movable member 417 cooperate with the same fixing member 42. Specifically, it is disposed between the first movable member 416 and the second movable member 417 along the width direction of the electric vehicle, and the identification device on the battery exchange device determines whether the first locking mechanism completely locks the battery pack 12 by identifying whether the distance between the first movable member 416 and the fixing member 42 in the width direction of the electric vehicle is within the first preset distance range, and the identification device on the battery exchange device determines whether the second locking mechanism completely locks the battery pack 12 by identifying whether the distance between the second movable member 417 and the fixing member 42 in the width direction of the electric vehicle is within the second preset distance range. The first movable member 416 and the second movable member 417 share a fixing member 42, which can simplify the structure of the locking determination mechanism 4, reduce costs, and make the layout of the locking detection mechanism more compact, so that the recognition range of the recognition device used to identify the relative position between the movable member 41 and the fixing member 42 is smaller, and the overall recognition device does not need to be designed to be very large.

[0148] The specific values ​​of the first preset distance range and the second preset distance range can be designed according to actual conditions, and the two can be the same or different.

[0149] In other alternative embodiments, the number of the fixing members 42 may be the same as the number of the moving members 41 , and the first moving member 416 and the second moving member 417 may cooperate with different fixing members 42 , respectively.

[0150] In other alternative embodiments, the fixing member 42 may be disposed at other positions, such as at a side of the first movable member 416 away from the second movable member 417 in the width direction of the electric vehicle, etc. The specific design may be based on actual conditions.

[0151] In this embodiment, the first moving member 416 and the second moving member 417 have the same shape and are both extended from the same side of the cantilever beam 22 . The matching modes of the first moving member 416 and the second moving member 417 with the cantilever beam module 223 are also the same.

[0152] In this embodiment, the locking mechanism 3 and the locking determination mechanism 4 on the two cantilever beam modules 223 on the same cantilever beam 22 have the same structure, and the front cantilever beam 221 and the rear cantilever beam 222 also adopt the same locking structure and locking determination structure.

[0153] In other alternative embodiments, the two cantilever beam modules 223 on the same cantilever beam 22 can be detachably connected to the battery pack 12 in different ways, and the front cantilever beam 221 and the rear cantilever beam 222 can also be detachably connected to the battery pack 12 in different ways.

[0154] The locking determination mechanism 4 is used for the station end of the battery swap station to determine whether the battery pack 12 is locked on the quick-change bracket 11. This embodiment further discloses a structure for the vehicle end of the electric vehicle to determine whether the battery pack 12 is locked on the quick-change bracket 11.

[0155] like Figure 7 As shown, a sensor 5 is also provided in the cantilever beam 22 for detecting the position of the locking linkage 33 to determine whether the battery pack 12 is locked on the quick-change bracket 11. Specifically, the sensor 5 is arranged inside the cantilever beam module 223 and fixed on the cantilever beam module 223. The sensor 5 detects the position of the locking linkage 33 relative to the cantilever beam module 223 to enable the electric vehicle end to determine whether the battery pack 12 is locked on the quick-change bracket 11, so as to facilitate the driver to confirm the locking structure, avoid ending the battery replacement process when the quick-change bracket 11 and the battery pack 12 are not locked, improve the reliability and safety of the battery replacement operation, prevent the battery pack 12 from falling off the electric vehicle, and ensure the safety of the electric vehicle.

[0156] The sensor 5 may be a distance measuring sensor 5 in the prior art, such as a Hall sensor 5. The position of the locking linkage 33 relative to the cantilever beam module 223 detected by the sensor 5 may be the position of the locking linkage 33 relative to the cantilever beam module 223 in the width direction of the electric vehicle, or the position of the locking linkage 33 relative to the cantilever beam module 223 in the height direction of the electric vehicle, and may be specifically designed according to actual conditions.

[0157] In other alternative embodiments, the sensor 5 may not be designed separately, and the determination result of the locking determination mechanism 4 described above may be transmitted to the vehicle end of the electric vehicle so that the driver can confirm whether the battery pack 12 is locked on the quick-change bracket 11 .

[0158] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships of the device or component during normal use, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0159] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A quick-change bracket, used for mounting on a beam of an electric vehicle to fix a battery pack, characterized in that: The quick-change bracket includes a cantilever beam, a locking mechanism and a locking determination mechanism, wherein: The locking mechanism is disposed on the cantilever beam and is used to cooperate with the locking member on the battery pack to lock or unlock the battery pack; The locking determination mechanism extends from a side surface of the cantilever beam, and the locking determination mechanism is used to determine whether the battery pack is locked on the quick-change bracket.

2. The quick-change bracket according to claim 1, characterized in that: The locking mechanism comprises a lock base and a locking linkage, wherein the lock base is fixed on the cantilever beam, and the locking linkage is rotatably connected to the lock base to lock or unlock the battery pack; The locking determination mechanism includes a moving part and a fixed part, the moving part is connected to the locking linkage part and rotates synchronously with the locking linkage part, the fixed part is fixed on the cantilever beam, and the locking determination mechanism determines whether the battery pack is locked on the quick-change bracket by detecting the relative position between the moving part and the fixed part.

3. The quick-change bracket according to claim 2, characterized in that: When the distance between the moving part and the fixing part is within a preset distance range, the battery pack can be locked on the quick-change bracket.

4. The quick-change bracket according to claim 2, characterized in that: The moving part extends from the side of the cantilever beam; and the quick-change bracket satisfies one or more of the following conditions: a1. The cantilever beam is a hollow structure, and the moving part extends out from an opening on one side of the cantilever beam; b1. The fixing member is fixedly mounted on the side of the cantilever beam from which the moving member extends.

5. The quick-change bracket according to claim 2, characterized in that: The locking mechanism includes a first locking mechanism and a second locking mechanism, and the moving part includes a first moving part and a second moving part. The first moving part is connected to the locking linkage part of the first locking mechanism, and the second moving part is connected to the locking linkage part of the second locking mechanism. The first moving part and the second moving part cooperate with the same fixed part.

6. The quick-change bracket according to claim 5, characterized in that: The fixing member is arranged between the first moving member and the second moving member.

7. The quick-change bracket according to claim 6, characterized in that: The quick-change bracket meets one or more of the following conditions: a2, the moving member extends from the cantilever beam toward a side of the quick-change bracket outside in the length direction of the electric vehicle; b2. The fixing member is fixedly mounted on a side surface of the cantilever beam in the length direction of the electric vehicle facing the outside of the quick-change bracket; c2, the fixing member is disposed between the first moving member and the second moving member along the width direction of the electric vehicle.

8. The quick-change bracket according to claim 2, characterized in that: The cantilever beam is a hollow structure, and the quick-change bracket meets one or more of the following conditions: a3, the moving part comprises a first connecting part and a first detecting part which are connected to each other, the first connecting part is arranged inside the cantilever beam and connected to the locking linkage part, and the first detecting part is arranged outside the cantilever beam and used to cooperate with the fixing part; b3. The upper end of the lock base is arranged inside the cantilever beam and connected to the cantilever beam, and the lower end of the lock base is arranged outside the cantilever beam and is used to cooperate with the locking piece on the battery pack.

9. The quick-change bracket according to claim 8, characterized in that: The moving member includes a first bending section, a second bending section and a third bending section connected in sequence, the second bending section is bent upward relative to the first bending section, the first bending section forms a first connecting portion of the moving member, and the third bending section forms a first detecting portion of the moving member.

10. The quick-change bracket according to claim 9, characterized in that: The fixing member comprises a fourth bending section and a fifth bending section connected to each other, the fourth bending section forms a second connecting portion, and the fifth bending section forms a second detecting portion; The second connecting portion is connected to the cantilever beam, and the second detecting portion cooperates with the first detecting portion.

11. The quick-change bracket according to claim 2, characterized in that: The cantilever beam is a hollow structure. A plurality of inspection openings are provided on one end surface of the cantilever beam facing the outside of the quick-change bracket in the length direction of the electric vehicle. The inspection openings communicate the inside and the outside of the cantilever beam.

12. The quick-change bracket according to claim 11, characterized in that: The quick-change bracket meets one or more of the following conditions: a4. The moving part extends out from the inspection port; b4. The inspection port is arranged corresponding to the locking mechanism; c4. A sealing plate is detachably connected to the cantilever beam, and the sealing plate is used to seal the inspection port.

13. The quick-change bracket according to claim 12, characterized in that: When the sealing plate is detachably connected to the cantilever beam, a through hole for the moving member to pass through is provided on the sealing plate, and the through hole penetrates through both ends of the electric vehicle in the length direction.

14. The quick-change bracket according to claim 2, characterized in that: The locking mechanism comprises a primary locking mechanism and a secondary locking mechanism, the locking linkage of the primary locking mechanism comprises a locking link, and the locking linkage of the secondary locking mechanism comprises a secondary locking rod; The primary locking mechanism comprises at least one primary lock base and at least one primary lock tongue, the lock link is arranged outside the primary lock base and connected to at least one primary lock tongue, and the moving part corresponding to the primary locking mechanism is arranged on the lock link; The secondary locking mechanism comprises a secondary lock base and a secondary lock tongue, the secondary lock rod is arranged outside the secondary lock base and connected to the secondary lock tongue, and the moving part corresponding to the secondary locking mechanism is arranged on the secondary lock rod.

15. The quick-change bracket according to claim 14, characterized in that: The quick-change bracket meets one or more of the following conditions: a5. The secondary locking mechanism further includes a secondary elastic member; the secondary locking rod of the secondary locking mechanism is connected to the primary lock base of the primary locking mechanism through the secondary elastic member; b5. The primary locking mechanism further includes a primary elastic member; The first-level elastic member is arranged on at least one of the first-level lock bases, and the two ends of the first-level elastic member are respectively connected to the lock link and one of the first-level lock bases; or, the first-level elastic member is arranged on the cantilever beam, and the two ends of the first-level elastic member are respectively connected to the lock link and the cantilever beam.

16. The quick-change bracket according to any one of claims 2 to 15, characterized in that: The quick-change bracket meets one or more of the following conditions: a6. The cantilever beam is a hollow structure, and a sensor is further provided inside the cantilever beam for detecting the position of the locking linkage to determine whether the battery pack is locked on the quick-change bracket; b6. The cantilever beam includes a front cantilever beam and a rear cantilever beam, and the front cantilever beam and the rear cantilever beam are arranged on the vehicle beam at intervals along the length direction of the electric vehicle. The front cantilever beam and the rear cantilever beam are both provided with the locking mechanism and the locking determination mechanism, and the battery pack is used to be arranged between the front cantilever beam and the rear cantilever beam.

17. An electric vehicle, characterized in that: The electric vehicle comprises a vehicle beam, a battery pack and a quick-change bracket as described in any one of claims 1 to 16, wherein the quick-change bracket is connected to the vehicle beam, and the battery pack is locked to the quick-change bracket.

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