Battery locking system of intelligent battery changing cabinet and control method

Abstract

The invention discloses a battery locking system of an intelligent battery replacing cabinet, which comprises a battery replacing cabinet, a battery slot is arranged on the battery replacing cabinet, and a battery unit can be inserted into the battery slot on the battery replacing cabinet under the guidance of a guide structure; a battery lock is fixedly mounted at the bottom of a battery slot in the battery replacement cabinet; an execution part of the battery lock comprises a lock hook; the insertion end of the battery unit is provided with an electrical interface and a locking groove, and a locking rod is fixed in the locking groove; when the battery units are completely inserted into the battery slots in the battery changing cabinet, the electrical interfaces are electrically connected with the joint sockets at the bottoms of the battery slots, and the lock hooks extend into the lock grooves and hook the lock rods; the invention provides a battery locking scheme which can intelligently deal with misoperation of a user, prevent a mechanism from being stuck and protect a driving unit on the premise of ensuring locking reliability and anti-theft performance.

Description

Technical Field

[0001] This invention belongs to the field of battery swapping cabinets. Background Technology

[0002] In existing technologies, the battery locking systems of shared battery swapping cabinets typically use simple mechanical or electromagnetic locks for direct locking. These solutions have the following drawbacks:

[0003] The conflict between theft prevention and reliability: To prevent theft, the lock hook and lock bar need to fit tightly together. However, this can lead to a huge static friction force when the lock hook is subjected to the lateral pressure of the user improperly removing the battery during unlocking. This can prevent the drive unit (such as the motor) from unlocking smoothly, or even cause the motor to stall and burn out.

[0004] After a user completes authentication by scanning a QR code, the system experiences an unlocking delay due to network and processing issues. If the user forcibly removes the battery before the unlock command is issued, the aforementioned jamming fault is highly likely to be triggered, preventing the battery from being removed normally and requiring manual intervention to reset. This severely impacts the user experience and system reliability. Summary of the Invention

[0005] Purpose of the invention: In order to overcome the shortcomings of the existing technology, the present invention provides a battery locking system and control method for an intelligent battery swapping cabinet, and provides a battery locking scheme that can intelligently respond to user misoperation, prevent mechanism jamming and protect the drive unit while ensuring locking reliability and anti-theft.

[0006] Technical solution: To achieve the above objectives, the present invention provides a battery locking system for an intelligent battery swapping cabinet, comprising a battery swapping cabinet, wherein a battery slot is provided on the battery swapping cabinet, and a battery unit can be inserted into the battery slot on the battery swapping cabinet under the guidance of a guide structure; a battery lock is fixedly installed at the bottom of the battery slot on the battery swapping cabinet, and the actuating part of the battery lock includes a locking hook;

[0007] The battery unit has an electrical interface and a locking slot at the insertion end, and a locking rod is fixed in the locking slot. When the battery unit is fully inserted into the battery slot on the battery swapping cabinet, the electrical interface is electrically connected to the connector socket at the bottom of the battery slot, the locking hook is inserted into the locking slot, and the locking hook hooks the locking rod.

[0008] The battery lock includes a swing arm, a pusher head, a tension spring, and a lock body; the middle of the swing arm rotates on a swing shaft; the lock hook is at one end of the swing arm, and the other end of the swing arm is vertically bent into a first folding arm and a second folding arm; one end of the tension spring applies a pulling force to the first folding arm, so that the pusher head's push tip is limited to contact one side of the second folding arm;

[0009] In the initial state, the swing arm is balanced by the tension of the tension spring and the supporting force of the push head, and the lock hook is in the "hooked" state. The push head can push the second folding arm under the drive of the drive unit in the lock body, and overcome the tension of the tension spring, so that the swing arm swings around the swing axis, and the lock hook changes from the "hooked" state to the "released" state.

[0010] Furthermore, the inner side of the end of the lock hook is the inner hook surface, and the outer side of the end of the lock hook is the outer bevel surface of the hook.

[0011] Furthermore, the battery slot is a downward-sloping insertion port. The battery insertion process is facilitated by gravity, making the insertion process smooth. After the battery is fully inserted, a gap is created between the inner hook surface of the locking hook and the locking rod.

[0012] Furthermore, a guide hole seat is integrally and vertically provided at one end of the swing arm near the locking hook. The guide hole seat has a pair of guide holes and also includes a pair of guide rods that move through the guide holes on the guide hole seat. The extension direction of the guide rods is parallel to the length direction of the swing arm. One end of the two guide rods is fixedly connected to the root of the locking hook, and the other end is vertically fixedly connected to the floating bar. A thrust spring is sleeved on the guide rod between the guide hole seat and the floating bar. The thrust spring exerts a thrust on the floating bar, and the thrust of the thrust spring on the floating bar is transmitted to the guide rod, so that the root end of the locking hook fits tightly against the guide hole seat under the tension of the guide rod.

[0013] Furthermore, a perforated groove is cut out along the length of the upper section of the swing arm near the guide hole seat, and a floating column is vertically connected to the floating bar, with the floating column passing vertically through the perforated groove; a micro switch with an a-angled pressing rocker and a micro switch with a b-angled pressing rocker are fixedly installed on the lock body; micro switch a and micro switch b correspond to the first folding arm and the floating column, respectively; when the a-angled pressing rocker is pressed, micro switch a is in the on state, and vice versa; when the b-angled pressing rocker is pressed, micro switch b is in the on state, and vice versa.

[0014] In the initial state, the first folding arm contacts and presses the a-slope pressing rocker of micro switch a, and the floating column contacts and presses the b-slope pressing rocker of micro switch b. In the initial state, after the swing arm swings around the swing axis to change the locking hook from the "hooked" state to the "released" state, the first folding arm disengages from the a-slope pressing rocker while the floating column disengages from the b-slope pressing rocker. In the initial state, when the swing arm does not swing around the swing axis, and the locking hook moves away from the guide hole seat under the guidance of the guide rod, the floating column will follow the locking hook to move away from the b-slope pressing rocker, thereby releasing the pressing of the b-slope pressing rocker. At the same time, the a-slope pressing rocker remains pressed by the first folding arm.

[0015] Furthermore, the drive unit includes a motor, a translation slider, and a gear; the translation slider is guided and fitted within the lock body, and a pusher head is fixedly connected to one end of the translation slider. The translation slider has a transmission gear array arranged along the sliding direction, and the gear meshes with the transmission gear. The motor is fixed within the lock body, and an a-clutch disc is coaxially fixedly connected to the end of the motor's output shaft. The upper surface of the a-clutch disc has a plurality of a-clutch teeth arranged in a radial array on its upper surface. The lower end of the gear is coaxially fixedly connected to a b-clutch disc via a transmission shaft. The lower surface of the b-clutch disc has a plurality of a-clutch teeth arranged in a radial array on its lower surface. The clutch teeth extend radially; the clutch discs a and b are coaxial, and in the initial state, the clutch teeth a on the clutch disc a and the clutch teeth b on the clutch disc b mesh with each other; the upper end of the gear is coaxially fixedly connected to the gear shaft, and the upper end of the gear shaft is rotatably fitted in the bearing sleeve through the bearing; a fixed cylinder is fixedly installed inside the lock body, and the outer wall of the bearing sleeve is coaxially slidably installed at the lower end of the fixed cylinder; a return spring is installed inside the fixed cylinder to apply a downward pushing force to the bearing sleeve, and in the initial state, the clutch discs a and b are stably and synchronously engaged under the pushing force of the return spring.

[0016] Furthermore, an upwardly extending iron core column is fixedly connected to the upper end of the bearing sleeve, and an electromagnet is coaxially fixedly installed on the upper end of the fixed cylinder. The electromagnet and the iron core column maintain a stroke gap. The electromagnet is energized only when micro switch a is on and micro switch b is off. In other cases, the electromagnet is de-energized. After the electromagnet is energized, the iron core column is attracted by magnetic force and moves upward, overcoming the push force of the return spring, thereby separating clutch disc a from clutch disc b.

[0017] Furthermore, after the barcode scanner of the smart battery swapping cabinet scans the QR code, the cabinet's control system sends the credential information to the cloud server for security verification. Once the server confirms the QR code is valid, it issues a command to the smart battery swapping cabinet to unlock the specific battery lock. Finally, the motor inside the battery lock drives the sliding block through gear meshing, which in turn drives the push head to push the second folding arm, overcoming the tension of the tension spring and causing the swing arm to swing around the swing axis. This causes the lock hook to change from the "hooked" state to the "released" state, and the lock rod in the lock slot of the battery unit is smoothly released. During the above process, after the swing arm swings around the swing axis and the lock hook changes from the "hooked" state to the "released" state, the first folding arm disengages from the a inclined plane pressing the rocker arm around the swing axis, while the floating column disengages from the b inclined plane pressing the rocker arm around the swing axis. Both the a micro switch and the b micro switch change from the on state to the off state simultaneously. After the battery unit is fully unlocked, the user pulls the battery unit outward.

[0018] Furthermore, during the process from the user scanning the code to the lock hook releasing the battery, due to network latency, verification process, and other delays, the user may manually pull the battery unit out before the motor inside the battery lock has a chance to activate. The inner hook surface of the lock hook then contacts and blocks the locking rod, preventing the battery unit from sliding upwards. At this point, the lock hook, guided by the guide rod, moves away from the guide hole seat under the user's pull. The floating column follows the lock hook, deviating from the b-slope pressing rocker, thus releasing the pressure on the b-slope pressing rocker. Simultaneously, the a-slope pressing rocker remains pressed by the first folding arm. At this time, the a microswitch is on and the b microswitch is off, triggering the electromagnet. When the electromagnet is energized, the iron core column is attracted upwards by magnetic force, overcoming the push of the return spring, thus separating the a clutch disc from the b clutch disc. If the motor starts operating at this point, since the a clutch disc and the b clutch disc are already separated, the motor has no operating load.

[0019] Subsequently, when the user realizes that the battery unit cannot be forcibly pulled out by hand, the system will automatically release its grip. Under the influence of gravity, the battery unit will slide back to its fully inserted state. The locking hook, under the action of the thrust spring, will float back to fit tightly against the guide hole seat. The floating column will follow the locking hook to move closer to and press the rocker arm on the inclined plane (b). While the micro switch (b) maintains its original state, the micro switch (a) will return from being open to being closed in its initial state. After the system recognizes the individual state change of the micro switch (a), it will immediately control the motor to perform the unlocking action again, so that the battery unit can smoothly enter the "unlocked" state. When the user pulls the battery unit out again, the battery unit can be smoothly pulled out.

[0020] Beneficial effects: This invention designs the locking hook to be floatingly connected to the swing arm via a guide rod and a thrust spring, rather than being rigidly integrated. When the user removes the battery in advance, causing pressure on the locking hook, the hook can overcome the force of the thrust spring and float backward, absorbing displacement. This significantly reduces the normal pressure between the inner hook surface and the locking rod, lowering the static friction that could cause jamming. Simultaneously, this floating motion provides physical signals for subsequent intelligent control.

[0021] An innovative pair of microswitches is incorporated to detect the two key signals, "swing arm position" and "hook floating status," in real time. An electromagnet-controlled clutch mechanism is also designed, connecting the motor and the actuator.

[0022] Innovative control logic: The system will only trigger the electromagnet to disengage the clutch when it detects the specific combination of "the swing arm is in the locked position and the locking hook has floated".

[0023] This design can accurately detect abnormal operating conditions such as "the user removing the battery prematurely, causing the locking hook to jam." Once detected, it immediately disengages the clutch, allowing the motor to idle, thus completely avoiding the risk of motor stalling and burning out, achieving system self-protection.

[0024] Adaptive recovery and retry control methods:

[0025] An innovative and complete fault handling process is proposed: when the user releases their grip, the battery resets under gravity, the locking hook resets under the action of the thrust spring, and the microswitch returns to its original state. The system can automatically re-initiate the unlocking command by monitoring this state change; this method achieves automatic fault recovery without manual intervention. After the system is released from its stuck state, it can automatically and smoothly complete subsequent unlocking actions, greatly improving the user experience and the system's intelligence level. Attached Figure Description

[0026] Figure 1 This is a schematic diagram showing the battery cell separated from the battery lock.

[0027] Figure 2 This is a schematic diagram showing the battery cell separated from the battery lock.

[0028] Figure 3 This is a structural schematic diagram of the "first embodiment";

[0029] Figure 4 This is a structural schematic diagram of the "second embodiment";

[0030] Figure 5 This is a cross-sectional view of the battery lock in the "second embodiment";

[0031] Figure 6 This is a schematic diagram of the transmission structure of the execution part in the "Second Embodiment";

[0032] Figure 7 This is a schematic diagram of the transmission structure of the drive section in the "second embodiment";

[0033] Figure 8 This is a schematic diagram of the internal structure of the battery lock after the outer casing is hidden, as shown in the "Second Embodiment". Detailed Implementation

[0034] The invention will now be further described with reference to the accompanying drawings.

[0035] like Figures 1 to 8 The image shows a battery locking system for an intelligent battery swapping cabinet.

[0036] First embodiment (e.g.) Figures 1 to 3As shown): It includes a battery swapping cabinet with a battery slot. The battery unit 1 can be inserted into the battery slot on the battery swapping cabinet under the guidance of the guide structure 2. A handle is provided at the end of the battery unit 1 away from the electrical interface 50. At least one pair of battery locks 100 are fixedly installed at the bottom of the battery slot on the battery swapping cabinet. The actuating part of the battery lock 100 includes a lock hook 7. The inner side of the end of the lock hook 7 is an inner hook surface 8, and the outer side of the end of the lock hook 7 is an outer hook surface 114.

[0037] The battery unit 1 is provided with an electrical interface 50 and a locking groove 5 at the insertion end. A locking rod 4 is fixed horizontally in the locking groove 5. When the battery unit 1 is fully inserted into the battery slot on the battery swapping cabinet, the electrical interface 50 is electrically connected to the connector socket at the bottom of the battery slot, the locking hook 7 is inserted into the locking groove 5, and the locking hook 7 hooks the locking rod 4.

[0038] The battery slot is a downward-sloping socket. The battery insertion process is aided by gravity, making the insertion process smooth. After the battery is fully inserted, a gap is created between the inner hook surface 8 of the locking hook 7 and the locking rod 4.

[0039] The battery lock 100 includes a swing arm 11, a push head 13, a tension spring 43, and a lock body 6 fixed to the bottom of the battery slot in the battery swapping cabinet. The middle part of the swing arm 11 is rotatably mounted on a swing shaft 9 fixed to the lock body 6. A lock hook 7 is located at one end of the swing arm 11, and the other end of the swing arm 11 is vertically bent into a first folding arm 10 and a second folding arm 12. One end of the tension spring 43 applies a pulling force to the first folding arm 10, so that the push head 13 is limited to contact one side of the second folding arm 12.

[0040] In the initial state, the swing arm 11 is balanced under the tension of the tension spring 43 and the supporting force of the push head 13, and the locking hook 7 is in the "hooked" state. The push head 13 can push the second folding arm 12 under the drive of the drive unit in the lock body 6, and overcome the tension of the tension spring 43, so that the swing arm 11 swings around the swing axis 9, thereby changing the locking hook 7 from the "hooked" state to the "released" state.

[0041] Working principle:

[0042] Battery insertion process:

[0043] During the process of the user actively inserting battery unit 1 into the battery slot on the battery swapping cabinet under the guidance of guide structure 2, when the locking rod 4 in the locking groove 5 of battery unit 1 begins to touch the outer inclined surface 114 of the hook 7, since the outer inclined surface 114 is an inclined surface, the pushing force of the locking rod 4 on the outer inclined surface 114 is converted into the driving force of the swing arm 11 swinging around the swing axis 9, so that the hook 7 first moves around the swing axis 9 to avoid the locking rod 4. When battery unit 1 is fully inserted into the battery slot on the battery swapping cabinet, the locking rod 4 disengages from the outer inclined surface 114 of the hook, and the swing arm 11 swings back under the tension of the tension spring 43, so that the hook 7 hooks the locking rod 4 and re-enters the "hooked" state. At this time, in order to ensure the smoothness of the subsequent "unlocking" process, there is a certain gap between the inner hook surface 8 of the hook 7 and the locking rod 4; thus completing the insertion and locking process of battery unit 1.

[0044] When someone pulls the locked battery unit 1 outward, as the battery unit 1 slides outward, the inner hook surface 8 of the lock hook 7 begins to contact and block the locking rod 4, preventing the battery unit 1 from sliding out diagonally upward, thus achieving the purpose of theft prevention.

[0045] Normal battery removal process:

[0046] Users generate a dynamic QR code via a mobile app as a pickup credential. When the barcode scanner of the smart battery swapping cabinet scans the QR code, the cabinet's control system sends the credential information to the cloud server for security verification. After the server confirms the QR code is valid, it issues an instruction to the smart battery swapping cabinet to open the specific battery lock 100. Finally, the drive unit inside the battery lock 100 drives the push head 13 to push the second folding arm 12, overcoming the tension of the tension spring 43, causing the swing arm 11 to swing around the swing axis 9. This causes the lock hook 7 to change from the "hooked" state to the "released" state, and the lock rod 4 in the lock groove 5 of the battery unit 1 is released. Users can then pull the battery unit 1 outwards to smoothly remove it.

[0047] The above-mentioned "first embodiment" has the following problems:

[0048] During the process from "scanning the code" to the "release" action of the lock hook 7, there is an unavoidable "delay" due to network latency, system processing, and other factors, and this delay time is uncertain. After "scanning the code," many users, regardless of whether they have already "unlocked," will immediately and impatiently pull the battery unit 1 outwards by hand before it can be unlocked. Subsequently, the inner hook surface 8 of the lock hook 7 begins to contact and block the locking rod 4, preventing the battery unit 1 from sliding outwards at an angle. At the same time, the force of the user manually pulling the battery unit 1 outwards will be converted into pressure between the inner hook surface 8 of the lock hook 7 and the locking rod 4 under the transmission of force, thereby causing the maximum static friction force between the inner hook surface 8 and the locking rod 4 to increase uncontrollably. At this time, if the drive unit inside the battery lock 100 drives the push head 13 to push the second folding arm 12, it is very likely that the push head 13 will "not be able to push" due to the friction force between the inner hook surface 8 and the locking rod 4. Since the most typical drive unit is the motor 22, a motor that is powered on but not rotating may burn out, and unlocking cannot be performed in this state.

[0049] Therefore, based on the aforementioned "first embodiment", the applicant designed the following further optimized structure and optimized control method:

[0050] Second embodiment (e.g.) Figures 4 to 8 (as shown)

[0051] like Figure 4 As shown, the locking hook 7 is not completely integrally connected to one end of the swing arm 11; a guide hole seat 16 is integrally and vertically provided at the end of the swing arm 11 near the locking hook 7. The guide hole seat 16 is provided with a pair of guide holes 15, and also includes a pair of guide rods 18 that move through the guide holes 15 on the guide hole seat 16. The extension direction of the guide rods 18 is parallel to the length direction of the swing arm 11. One end of the two guide rods 18 is fixedly connected to the root of the locking hook 7, and the other end is vertically fixedly connected to the floating bar 20; a thrust spring 17 is sleeved on the guide rods 18 between the guide hole seat 16 and the floating bar 20. The thrust spring 17 generates a thrust on the floating bar 20. The thrust of the thrust spring 17 on the floating bar 20 is transmitted to the guide rods 18, so that the root end of the locking hook 7 is tightly attached to the guide hole seat 16 under the tension of the guide rods 18.

[0052] A perforated groove 19 is cut out along the length of the upper section of the swing arm 11 near the guide hole seat 16. A floating column 42 is vertically connected to the floating strip 20, and the floating column 42 passes vertically through the perforated groove 19; Figure 6 The lock body 6 is fixedly equipped with a micro switch 38 with an a-angled pressing rocker 39 and a micro switch 41 with a b-angled pressing rocker 40; the a micro switch 38 and the b micro switch 41 correspond to the first folding arm 10 and the floating column 42, respectively. The a micro switch 38 and the b micro switch 41 are standard micro switches, such as Omron SS-5GL, with a stroke of 0.5mm and a life of more than 100,000 cycles, ensuring reliable detection.

[0053] When the inclined rocker arm 39 is pressed, the micro switch 38 is in the ON state; otherwise, it is in the OFF state.

[0054] When the inclined plane rocker 40 is pressed, the micro switch 41 is in the ON state; otherwise, it is in the OFF state.

[0055] In the initial state, the first folding arm 10 contacts and presses the a-slope of the a micro switch 38 to press the rocker arm 39, and the floating column 42 contacts and presses the b-slope of the b micro switch 41 to press the rocker arm 40.

[0056] In the initial state, the swing arm 11 swings around the swing axis 9, causing the locking hook 7 to change from the "hooked" state to the "released" state. At the same time, the first folding arm 10 disengages from the a-slope pressing the rocker 39 around the swing axis 9, and the floating column 42 disengages from the b-slope pressing the rocker 40 around the swing axis 9.

[0057] In the initial state, when the swing arm 11 does not swing around the swing axis 9, when the locking hook 7 moves away from the guide hole seat 16 under the guidance of the guide rod 18, the floating column 42 will follow the locking hook 7 to move away from the b inclined plane pressing rocker 40, thereby releasing the pressing of the b inclined plane pressing rocker 40. At the same time, the a inclined plane pressing rocker 39 is still pressed by the first folding arm 10.

[0058] like Figure 5 and 7 As shown, the drive unit includes a motor 22, a translation slider 34, and a gear 27. The translation slider 34 is guided and fitted inside the lock body 6. The push head 13 is fixedly connected to one end of the translation slider 34. The translation slider 34 is provided with a transmission tooth body 35 arranged in an array along the sliding direction, and the gear 27 meshes with the transmission tooth body 35. The motor 22 is fixed inside the lock body 6. The output shaft 23 of the motor 22 is coaxially fixedly connected to an a clutch disc 24. The upper surface of the a clutch disc 24 is provided with a number of a clutch teeth 102 extending in the radial direction in a circumferential array. The lower end of the gear 27 is coaxially fixedly connected to a b clutch disc 25 through a transmission shaft 37. The lower surface of the b clutch disc 25 is provided with a number of b clutch teeth 101 extending in the radial direction in a circumferential array. The a clutch disc 24 and the b clutch disc 25 are coaxial, and in the initial state, the a clutch teeth 102 on the a clutch disc 24 and the b clutch teeth 101 on the b clutch disc 25 mesh with each other.

[0059] The upper end of gear 27 is coaxially fixedly connected to gear shaft 36, and the upper end of gear shaft 36 is rotatably fitted in bearing sleeve 28 through bearing 33; a fixed cylinder 29 is fixedly installed inside lock body 6, and the outer wall of bearing sleeve 28 is coaxially slidably installed in the lower end of fixed cylinder 29; a return spring 30 is installed inside fixed cylinder 29 to apply downward pushing force to bearing sleeve 28, and in the initial state, under the pushing force of return spring 30, clutch disc a 24 and clutch disc b 25 are stably and synchronously engaged; an upwardly extending iron core column 32 is fixedly connected to the upper end of bearing sleeve 28, and an electromagnet 31 is coaxially fixedly installed on the upper end of fixed cylinder 29, and a stroke distance is maintained between electromagnet 31 and iron core column 32.

[0060] Electromagnet 31 is energized only when micro switch 38 is on and micro switch 41 is off. Otherwise, electromagnet 31 is de-energized. When electromagnet 31 is energized, the iron core column 32 is attracted upward by magnetic force and overcomes the push of the return spring 30, thereby separating clutch disc 24 and clutch disc 25.

[0061] The translation slider 34 is provided with a positioning groove 61 along the sliding direction, and the fixed cylinder 29 passes vertically through the positioning groove 61; the two ends of the positioning groove 61 play a role in positioning the stroke of the translation slider 34.

[0062] The control method for the battery removal process in the "Second Embodiment":

[0063] Normal battery swapping process: The user generates a dynamic QR code as a retrieval credential via a mobile app; when the smart battery swapping cabinet's scanner scans the QR code, the cabinet's control system sends the credential information to the cloud server for security verification; after the server confirms the QR code is valid, it issues a command to the smart battery swapping cabinet to open the specific battery lock 100; finally, the motor 22 inside the battery lock 100, through the meshing action of the gear 27, drives the translation slider 34 to drive the push head 13 to push the second folding arm 12, overcoming the tension of the tension spring 43, causing the swing arm 11 to swing around the swing axis 9, thereby opening the lock. As the hook 7 changes from the "hooked" state to the "released" state, the locking rod 4 in the locking groove 5 of the battery unit 1 is smoothly released. During the above process, the swing arm 11 swings around the swing axis 9, causing the hook 7 to change from the "hooked" state to the "released" state. At the same time, the first folding arm 10 moves away from the a inclined plane pressing the rocker 39 around the swing axis 9, and the floating column 42 moves away from the b inclined plane pressing the rocker 40 around the swing axis 9. The a micro switch 38 and the b micro switch 41 both change from the on state to the off state. After the battery unit 1 is fully in the "unlocked" state, the user can finally pull the battery unit 1 outward to smoothly remove it.

[0064] Abnormal removal process:

[0065] During the process from the user scanning the code to the lock hook 7 releasing the battery, due to network latency, verification process, and other delays, the user may manually pull the battery unit 1 out before the motor 22 inside the battery lock 100 has a chance to activate. Subsequently, the inner hook surface 8 of the lock hook 7 begins to contact and block the locking rod 4, preventing the battery unit 1 from sliding out diagonally. At this time, the force of the user manually pulling the battery unit 1 outward will be converted into pressure between the inner hook surface 8 of the lock hook 7 and the locking rod 4 under the transmission of force, thereby causing the maximum static friction between the inner hook surface 8 and the locking rod 4 to increase uncontrollably. If the motor 22 performs the unlocking action at this time, the push head 13 may not be able to be pushed due to the friction between the inner hook surface 8 and the locking rod 4. The motor 22, which is powered but not rotating, may burn out, and unlocking cannot be performed in this state.

[0066] In this solution, when the user pulls the battery unit 1 outwards before it is unlocked, the locking hook 7 will move away from the guide hole seat 16 under the guidance of the guide rod 18. The floating column 42 will follow the locking hook 7 to move away from the b-slope pressing rocker 40, thereby releasing the pressing of the b-slope pressing rocker 40. At the same time, the a-slope pressing rocker 39 is still pressed by the first folding arm 10. At this time, the a micro switch 38 is turned on and the b micro switch 41 is turned off. The electromagnet 31 is triggered and energized. After the electromagnet 31 is energized, the iron core column 32 is attracted by magnetic force and moves upward, overcoming the push of the return spring 30, thereby separating the a clutch disc 24 from the b clutch disc 25. If the motor 22 starts to operate at this time, since the a clutch disc 24 and the b clutch disc 25 have been separated, the motor 22 has no operating load, avoiding the risk of the motor getting stuck and burning out.

[0067] Subsequently, when the user realizes that battery unit 1 cannot be forcibly pulled out by hand, the system will automatically release its grip. Battery unit 1 will then slide back to its fully inserted state under gravity. Lock hook 7, under the action of push spring 17, will float again to tightly fit the guide hole seat 16. Floating column 42 will follow lock hook 7, moving closer to and pressing against inclined plane 40. While micro switch 41 maintains its original state, micro switch 38 will return from open to its initial closed state. Upon recognizing this individual state change of micro switch 38, the system immediately controls motor 22 to perform another unlocking action, thus smoothly allowing battery unit 1 to enter the "unlocked" state. When the user pulls battery unit 1 out again, it can be smoothly pulled out. This solution, through the coordinated design of mechanical and electronic controls, effectively solves the problem of jamming caused by premature battery removal, improves system reliability and user experience, and avoids the risk of motor burnout.

[0068] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A battery locking system for an intelligent battery swapping cabinet, characterized in that: The battery swapping cabinet is equipped with a battery slot, and the battery unit (1) can be inserted into the battery slot on the battery swapping cabinet under the guidance of the guide structure (2); a battery lock (100) is fixedly installed at the bottom of the battery slot on the battery swapping cabinet, and the battery lock (100) includes a lock hook (7). The battery unit (1) has an electrical interface (50) and a locking groove (5) at the insertion end. A locking rod (4) is fixed in the locking groove (5). When the battery unit (1) is fully inserted into the battery slot on the battery swapping cabinet, the electrical interface (50) is electrically connected to the connector socket at the bottom of the battery slot, the locking hook (7) is inserted into the locking groove (5), and the locking hook (7) hooks the locking rod (4). The battery lock (100) includes a swing arm (11), a push head (13), a tension spring (43), and a lock body (6); the middle part of the swing arm (11) rotates on the swing shaft (9); the lock hook (7) is at one end of the swing arm (11), and the other end of the swing arm (11) is vertically bent into a first folding arm (10) and a second folding arm (12); one end of the tension spring (43) applies a pulling force to the first folding arm (10), so that the push head (13) is limited to contact one side of the second folding arm (12); In the initial state, the swing arm (11) is balanced by the tension of the tension spring (43) and the supporting force of the push head (13), and the locking hook (7) is in the "hooked" state. The push head (13) can push the second folding arm (12) under the drive of the drive unit in the lock body (6) and overcome the tension of the tension spring (43) to make the swing arm (11) swing around the swing axis (9) and change the lock hook (7) from the "hooked" state to the "released" state.

2. The battery locking system for an intelligent battery swapping cabinet according to claim 1, characterized in that: The inner side of the end of the lock hook (7) is the inner hook surface (8), and the outer side of the end of the lock hook (7) is the outer inclined surface (114) of the hook body.

3. The battery locking system for an intelligent battery swapping cabinet according to claim 2, characterized in that: The battery slot is a downward-sloping socket. The battery insertion process is smooth by gravity. After it is fully inserted, a gap is formed between the inner hook surface (8) of the locking hook (7) and the locking rod (4).

4. The battery locking system for an intelligent battery swapping cabinet according to claim 3, characterized in that: A guide hole seat (16) is integrally and vertically provided at one end of the swing arm (11) near the lock hook (7). A pair of guide holes (15) are provided on the guide hole seat (16), and a pair of guide rods (18) are also provided that move through the guide holes (15) on the guide hole seat (16). The extension direction of the guide rods (18) is parallel to the length direction of the swing arm (11). One end of the two guide rods (18) is fixedly connected to the root of the lock hook (7), and the other end is vertically fixedly connected to the floating bar (20). A thrust spring (17) is provided on the guide rod (18) between the guide hole seat (16) and the floating bar (20). The thrust spring (17) generates a thrust on the floating bar (20). The thrust spring (17) transmits the thrust on the floating bar (20) to the guide rod (18), so that the root end of the lock hook (7) is tightly attached to the guide hole seat (16) under the pull of the guide rod (18).

5. The battery locking system for an intelligent battery swapping cabinet according to claim 4, characterized in that: A perforated groove (19) is cut out along the length of the upper part of the swing arm (11) near the guide hole seat (16). A floating column (42) is vertically connected to the floating bar (20), and the floating column (42) passes vertically through the perforated groove (19). A micro switch (38) with an a-sloping pressing rocker (39) and a micro switch (41) with a b-sloping pressing rocker (40) are fixedly installed on the lock body (6). The micro switch (38) and the micro switch (41) correspond to the first folding arm (10) and the floating column (42) respectively. When the a-sloping pressing rocker (39) is pressed, the micro switch (38) is in the on state, and the other is in the off state. When the b-sloping pressing rocker (40) is pressed, the micro switch (41) is in the on state, and the other is in the off state. In the initial state, the first folding arm (10) contacts and presses the a-slope pressing rocker (39) of the a micro switch (38), and the floating column (42) contacts and presses the b-slope pressing rocker (40) of the b micro switch (41). In the initial state, after the swing arm (11) swings around the swing axis (9) to change the locking hook (7) from the "hooked" state to the "released" state, the first folding arm (10) disengages from the a-slope pressing rocker (39) around the swing axis (9) while the floating column (42) swings around the swing axis (9). ) Disengage from the b-slope pressing rocker (40); In the initial state, when the swing arm (11) does not swing around the swing axis (9), when the locking hook (7) moves away from the guide hole seat (16) under the guidance of the guide rod (18), the floating column (42) will follow the locking hook (7) to move away from the b-slope pressing rocker (40), thereby releasing the pressing of the b-slope pressing rocker (40), while the a-slope pressing rocker (39) is still pressed by the first folding arm (10).

6. The battery locking system of an intelligent battery swapping cabinet according to claim 5, characterized in that: The drive unit includes a motor (22), a translation slider (34), and a gear (27); the translation slider (34) is guided and fitted inside the lock body (6), and the push head (13) is fixedly connected to one end of the translation slider (34). The translation slider (34) is provided with a transmission gear (35) arranged in an array along the sliding direction, and the gear (27) meshes with the transmission gear (35); the motor (22) is fixed inside the lock body (6), and the output shaft (23) of the motor (22) is coaxially fixedly connected to an a clutch disc (24). The upper surface of the a clutch disc (24) is arranged in a circumferential array with a number of a clutch teeth (102) extending in the radial direction; the lower end of the gear (27) is coaxially fixedly connected to a b clutch disc (25) through the transmission shaft (37). The lower surface of the b clutch disc (25) is arranged in a circumferential array with a number of a clutch teeth (102) extending in the radial direction. The clutch teeth (101) extend to the side; the clutch disc (24) and the clutch disc (25) are coaxial, and in the initial state, the clutch teeth (102) on the clutch disc (24) and the clutch teeth (101) on the clutch disc (25) mesh with each other; the upper end of the gear (27) is coaxially fixedly connected to the gear shaft (36), and the upper end of the gear shaft (36) is rotatably fitted in the bearing sleeve (28) through the bearing (33); a fixed cylinder (29) is fixedly installed inside the lock body (6), and the outer wall of the bearing sleeve (28) is coaxially slidably installed at the lower end inside the fixed cylinder (29); a return spring (30) is installed inside the fixed cylinder (29) to apply downward thrust to the bearing sleeve (28), and in the initial state, the clutch disc (24) and the clutch disc (25) are stably and synchronously engaged under the thrust of the return spring (30).

7. The battery locking system for an intelligent battery swapping cabinet according to claim 6, characterized in that: The upper end of the bearing sleeve (28) is fixedly connected to an upwardly extending iron core column (32), and the upper end of the fixed cylinder (29) is coaxially fixedly installed with an electromagnet (31). The electromagnet (31) and the iron core column (32) maintain a stroke distance. The electromagnet (31) is energized only when the micro switch (38) a is turned on and the micro switch (41) b is turned off. In other cases, the electromagnet (31) is de-energized. After the electromagnet (31) is energized, the iron core column (32) is attracted by magnetic force and moves upward, overcoming the thrust of the reset spring (30), thereby separating the clutch disc (24) a from the clutch disc (25).

8. The control method for the battery locking system of an intelligent battery swapping cabinet according to claim 7, characterized in that: After the barcode scanner of the smart battery swapping cabinet scans the QR code, the control system inside the cabinet will send the credential information to the cloud server for security verification. After the server confirms that the QR code is valid, it will issue an instruction to the smart battery swapping cabinet to open the specific battery lock (100). Finally, the motor (22) inside the battery lock (100) drives the translation slider (34) through the meshing action of the gear (27) to drive the push head (13) to push the second folding arm (12) and overcome the tension of the tension spring (43), so that the swing arm (11) swings around the swing axis (9), thereby changing the lock hook (7) from the "hooked" state to the "released" state. In the "unlocked" state, the locking rod (4) in the locking groove (5) of the battery unit (1) is smoothly released. During the above process, the swing arm (11) swings around the swing axis (9) to change the locking hook (7) from the "hooked" state to the "released" state. At the same time, the first folding arm (10) disengages from the a inclined plane pressing rocker (39) around the swing axis (9) and the floating column (42) disengages from the b inclined plane pressing rocker (40) around the swing axis (9). The a micro switch (38) and the b micro switch (41) both change from the on state to the off state. After the battery unit (1) is fully in the "unlocked" state, the user pulls the battery unit (1) outward.

9. The control method for the battery locking system of an intelligent battery swapping cabinet according to claim 8, characterized in that: During the process from the user scanning the code to the lock hook (7) releasing the battery, due to network latency, verification process and other delays, the user manually pulls the battery unit (1) out before the motor (22) inside the battery lock (100) can move after scanning the code. Then the inner hook surface (8) of the lock hook (7) begins to contact and block the locking rod (4), preventing the battery unit (1) from sliding out diagonally. At this time, the lock hook (7) will move away from the guide hole seat (16) under the guidance of the guide rod (18) and the floating column (42) will follow the lock hook (7) to deviate from the inclined plane and press the rocker (40). The action releases the pressure on the inclined plane (40), while the inclined plane (39) remains pressed by the first folding arm (10). At this time, the micro switch (38) is on and the micro switch (41) is off. The electromagnet (31) is triggered and energized. After the electromagnet (31) is energized, the iron core column (32) is attracted by the magnetic force and moves upward, overcoming the push of the reset spring (30), thereby separating the clutch disc (24) from the clutch disc (25). If the motor (22) starts to move at this time, since the clutch disc (24) and the clutch disc (25) have been separated, the motor (22) has no operating load. Subsequently, when the user realizes that the battery unit (1) cannot be forcibly pulled out by hand, he will automatically release his hand. The battery unit (1) will slide back to the fully inserted state under the action of gravity. The locking hook (7) floats again under the action of the thrust spring (17) and fits tightly against the guide hole seat (16). The floating column (42) follows the locking hook (7) to move closer to and press the inclined plane (40). The micro switch (41) maintains its original state, while the micro switch (38) returns from the open state to the closed state in the initial state. After the system recognizes the individual state change of the micro switch (38), it immediately controls the motor (22) to perform the unlocking action again, so that the battery unit (1) can smoothly enter the "unlocked" state. When the user pulls the battery unit (1) out again, the battery unit (1) can be smoothly pulled out.

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