Integrated unlocking and locking mechanism for new energy vehicle battery packs and chassis battery swapping mechanism

Abstract

This utility model provides an integrated locking / unlocking mechanism for a new energy vehicle battery pack and a chassis battery swapping mechanism, belonging to the field of new energy vehicle battery swapping technology. The battery pack is fixedly installed on a battery pack support frame, which is detachably installed on a vehicle battery swapping bracket via the integrated locking / unlocking mechanism. The integrated locking / unlocking mechanism includes a pin and a latch, respectively located on the battery pack support frame and the vehicle battery swapping bracket. A insertion hole is provided on the pin, and the insertion hole corresponds to the position of the latch during locking / unlocking. A drive mechanism is connected to the latch, which drives the latch to insert or retract from the insertion hole to lock or unlock the battery pack. This utility model's integrated locking / unlocking mechanism is a built-in component on both the battery pack support frame and the vehicle battery swapping bracket, achieving an integrated design between the locking / unlocking mechanism and the battery pack. This design is low-cost and simplifies the battery swapping process. Furthermore, it features automated one-button installation and removal, reducing battery swapping time and improving efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of battery swapping technology for new energy vehicles, and particularly relates to an integrated unlocking and discharging mechanism for a new energy vehicle battery pack and a chassis battery swapping mechanism. Background Technology

[0002] While the production and sales of new energy vehicles have been growing rapidly, significant breakthroughs in battery technology have not been achieved, and drivers' anxiety about range has not been adequately addressed. Refueling a gasoline car takes less than 5 minutes, while slow charging for electric vehicles typically takes 6-8 hours, and even fast charging takes at least 30 minutes, with longer wait times when queuing, severely impacting the user experience. Furthermore, fast charging reduces battery lifespan and increases operating costs. This has led to the development of the battery swapping industry, with chassis battery swapping being widely used due to its convenient and quick operation. Chassis battery swapping involves removing the old battery pack from under the chassis and replacing it with a new one.

[0003] Existing new energy vehicle battery packs are primarily bolted to the underside of the chassis. This requires specialized tools and the bolts must be tightened to a certain torque. Traditional battery pack installation methods involve using an RGV cart and a locking / unlocking system to remove and install the bottom screws of the battery pack. This process is complex, impacts battery swapping time, and is costly. Locking / unlocking mechanisms, which involve disassembling or tightening screws, are also costly, cumbersome, time-consuming, and inefficient. Furthermore, frequent bolt removal and installation can lead to bolt failure, posing a safety hazard and necessitating regular maintenance and replacement.

[0004] The locking and unlocking device has been removed, and a locking component has been added inside the battery pack itself to secure the battery pack. This method is less expensive, more automated, and allows for shorter battery replacement times, meeting the needs of car owners for quick and efficient battery swapping anytime, anywhere. Utility Model Content

[0005] The purpose of this utility model is to address the shortcomings of existing technologies by providing an integrated unlocking and disengaging mechanism for a new energy vehicle battery pack and a chassis battery swapping mechanism.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an integrated locking and unlocking mechanism for a new energy vehicle battery pack, wherein the battery pack is fixedly mounted on a battery pack support frame, and the battery pack support frame is detachably mounted on a vehicle battery swapping bracket via the integrated locking and unlocking mechanism. The integrated locking and unlocking mechanism includes a pin and a latch, which are respectively disposed on the battery pack support frame and the vehicle battery swapping bracket. A insertion hole is provided on the pin, and the insertion hole corresponds to the position of the latch during locking and unlocking. A driving mechanism is connected to the latch, and the driving mechanism drives the latch to insert or retract from the insertion hole to realize the locking or unlocking of the battery pack.

[0007] Furthermore, the pin is fixedly installed on the battery pack support frame; a lock body is provided on the vehicle body battery swapping bracket, the lock body including a drive mechanism, a pin, and a lock body seat; the drive mechanism is installed on the vehicle body battery swapping bracket through the lock body seat, and the pin is installed on the output end of the drive mechanism.

[0008] Furthermore, the lock body seat is provided with a first through hole and a second through hole that are perpendicular to each other, and the setting direction of the first through hole is consistent with the movement direction of the pin; the vehicle body battery swapping bracket is provided with a third through hole, and the third through hole communicates with the second through hole.

[0009] Furthermore, the driving mechanism is a pneumatic cylinder, an electric cylinder, a hydraulic cylinder, or a motor.

[0010] Furthermore, the driving mechanism is a cylinder, and the pin is fixedly connected to the piston rod of the cylinder.

[0011] Furthermore, the pin is fixedly mounted on the battery pack support frame via a pin fixing seat.

[0012] Furthermore, an elastic body is sleeved between the pin and the pin fixing seat.

[0013] Furthermore, the elastomer is rubber, thermoplastic elastomer, or silicone.

[0014] This utility model also claims protection for a battery swapping mechanism for a new energy vehicle chassis, which adopts the aforementioned integrated locking and unlocking mechanism for the new energy vehicle battery pack, with the battery swapping bracket fixedly installed on the body of the new energy vehicle.

[0015] The beneficial effects of this utility model are as follows:

[0016] (1) The integrated battery pack unlocking mechanism of this utility model is a built-in component on the battery pack support frame and the vehicle body battery swapping bracket. It can realize the integrated design of the unlocking mechanism and the battery pack, which is low in cost and simplifies the battery swapping process.

[0017] (2) The integrated battery pack unlocking mechanism of this utility model is an automated one-button disassembly and assembly, which reduces the battery swapping time and improves the battery swapping efficiency.

[0018] (3) The components in the integrated battery pack unlocking mechanism of this utility model have a long service life and high stability.

[0019] (4) In the integrated battery pack unlocking mechanism of this utility model, an elastic body is sleeved between the pin and the pin fixing seat, which allows for errors in length, width, height and rotation direction during battery pack installation, and is highly practical. Attached Figure Description

[0020] Figure 1 This is an assembly drawing of the battery swapping mechanism for a new energy vehicle chassis according to this utility model.

[0021] Figure 2 for Figure 1 A magnified view of region A in the middle.

[0022] Figure 3 for Figure 1 A magnified view of region B in the middle.

[0023] Figure 4 This is a three-dimensional view of the locked state of the integrated locking and unlocking mechanism for the new energy vehicle battery pack of this utility model.

[0024] Figure 5 This is a three-dimensional view of the unlocking state of the integrated unlocking mechanism for the new energy vehicle battery pack of this utility model.

[0025] Figure 6 This is an assembly drawing of the lock body in the integrated unlocking mechanism for the new energy vehicle battery pack of this utility model.

[0026] Figure 7 This is an assembly drawing of the pin shaft in the integrated unlocking and disengaging mechanism of the new energy vehicle battery pack of this utility model.

[0027] The reference numerals in the accompanying drawings of this utility model are as follows: 1. Battery pack; 2. Battery pack support frame; 3. Vehicle body battery swapping bracket; 4. New energy vehicle body; 5. Pin shaft; 6. Lock body; 7. Elastic body; 8. Pin shaft fixing seat; 51. Insertion hole; 61. Pin; 611. Slot; 62. Cylinder; 621. Piston rod; 63. Lock body seat; 631. First through hole; 632. Second through hole. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] like Figures 1-7 As shown, this embodiment provides an integrated locking and unlocking mechanism for a new energy vehicle battery pack. The battery pack 1 is fixedly installed on the battery pack support frame 2 (this part is prior art). The battery pack support frame 2 is detachably installed on the vehicle body battery swapping bracket 3 through the integrated locking and unlocking mechanism. The vehicle body battery swapping bracket 3 is fixedly installed on the new energy vehicle body 4.

[0032] The integrated locking and unlocking mechanism includes a pin 5 and a pin 61, which are respectively mounted on the battery pack support frame 2 and the vehicle body battery swapping bracket 3. The pin 5 has a socket 51, and the socket 51 and the pin 61 are positioned correspondingly during locking and unlocking. The pin 61 is connected to a drive mechanism, which drives the pin 61 to insert or withdraw from the socket 51 to lock or unlock the battery pack 1.

[0033] In one specific embodiment, the pin 5 is fixedly installed on the battery pack support frame 2; a lock body 6 is provided on the vehicle body battery swapping bracket 3, the lock body 6 includes a drive mechanism, a pin 61, and a lock body seat 63; the drive mechanism is installed on the vehicle body battery swapping bracket 3 through the lock body seat 63, and the pin 61 is installed on the output end of the drive mechanism.

[0034] In other embodiments, the pin 5 may be mounted on the vehicle body battery swapping bracket 3, and the pin 61 may be mounted on the battery pack support frame 2.

[0035] The lock body seat 63 is provided with a first through hole 631 and a second through hole 632 that are perpendicular to each other. The setting direction of the first through hole 631 is consistent with the movement direction of the pin 61. The vehicle body battery swapping bracket 3 is provided with a third through hole (not shown in the figure), which is connected to the second through hole 632.

[0036] The drive mechanism can be a pneumatic cylinder, an electric cylinder, a hydraulic cylinder, or a motor.

[0037] In one specific embodiment, the driving mechanism is a cylinder 62, and a slot 611 is provided on the pin 61. The piston rod 621 of the cylinder 62 is fixedly engaged in the slot 611, which can realize the fixed connection between the pin 61 and the piston rod 621.

[0038] In other embodiments, the above connection method may also be used when the drive mechanism is an electric cylinder or a hydraulic cylinder.

[0039] When the drive mechanism is a motor, a cam mechanism, crank-slider mechanism, gear-rack mechanism, screw mechanism such as a ball screw can be introduced into the output shaft of the motor to convert the rotational motion of the motor into linear motion, so as to drive the pin 61 to be inserted or withdrawn in the insertion hole 51 of the pin shaft 5, thereby locking or unlocking the battery pack 1.

[0040] Furthermore, the pin 5 is fixedly mounted on the battery pack support frame 2 via the pin fixing seat 8. An elastic body 7 is sleeved between the pin 5 and the pin fixing seat 8, which allows for errors in length, width, height, and rotation direction of the battery pack 1 during installation, thereby improving the reliability of the battery pack 1 during installation. The elastic body 7 can be rubber, thermoplastic elastomer, or silicone, and the appropriate material can be selected according to the specific circumstances.

[0041] The working principle of the integrated locking and unlocking mechanism for new energy vehicle battery packs of this utility model is as follows:

[0042] When it is necessary to unlock and remove the battery pack 1 from the new energy vehicle, the AGV transport vehicle first travels to the bottom of the battery pack 1 on the chassis of the new energy vehicle; the cylinder 62 is started, the piston rod 621 pulls the pin 61 out of the insertion hole 51, the battery pack support frame 2 is unlocked from the battery swapping bracket 3 on the vehicle body, the lifting mechanism of the AGV transport vehicle is lowered, so that the pin 5 slides out completely from the second through hole 632 on the lock body seat 63 and the third through hole on the battery swapping bracket 3 on the vehicle body, the battery pack support frame 2 falls on the AGV transport vehicle, and the AGV transport vehicle transports the battery pack 1 to the corresponding position;

[0043] When it is necessary to install battery pack 1 on a new energy vehicle, the AGV transport vehicle moves the battery pack carrier 2 with battery pack 1 installed to directly under the chassis of the new energy vehicle. The lifting mechanism is activated, and the pin 5 passes through the third through hole on the battery swapping bracket 3 and the second through hole 632 on the lock body seat 63. During the lifting process, the pin 5 adjusts the installation error through the elastic body 7. After it is in place, the cylinder 62 is activated, and the piston rod 621 pushes the pin 61 to insert into the insertion hole 51, locking the battery pack carrier 2 to the battery swapping bracket 3. The lifting mechanism of the AGV transport vehicle then descends and drives out from under the new energy vehicle, completing the battery swapping process.

[0044] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A new energy vehicle battery pack integrated locking and unlocking mechanism, wherein the battery pack is fixedly installed on a battery pack carrier, and the battery pack carrier is detachably installed on a vehicle body battery replacement support through the integrated locking and unlocking mechanism, characterized in that: The integrated locking and unlocking mechanism includes a pin and a latch, which are respectively mounted on the battery pack support frame and the vehicle body battery swapping bracket; the pin has a hole, which corresponds to the position of the latch during locking and unlocking; the latch is connected to a drive mechanism, which drives the latch to insert or retract from the hole to lock or unlock the battery pack. The pin is fixedly installed on the battery pack support frame; a lock body is provided on the vehicle body battery swapping bracket, the lock body including a drive mechanism, a pin, and a lock body seat; the drive mechanism is installed on the vehicle body battery swapping bracket through the lock body seat, and the pin is installed on the output end of the drive mechanism; The lock body seat is provided with a first through hole and a second through hole that are perpendicular to each other. The first through hole is oriented in the same direction as the movement direction of the pin. The battery swapping bracket on the vehicle body is provided with a third through hole that communicates with the second through hole.

2. The new energy vehicle battery pack integrated locking and unlocking mechanism according to claim 1, characterized in that: The drive mechanism is a pneumatic cylinder, an electric cylinder, a hydraulic cylinder, or a motor.

3. The new energy vehicle battery pack integrated locking and unlocking mechanism according to claim 2, characterized in that: The driving mechanism is a cylinder, and the pin is fixedly connected to the piston rod of the cylinder.

4. The new energy vehicle battery pack integrated locking and unlocking mechanism according to claim 1, characterized in that: The pin is fixedly mounted on the battery pack support frame via a pin fixing seat.

5. The new energy vehicle battery pack integrated locking and unlocking mechanism according to claim 4, characterized in that: An elastic body is sleeved between the pin and the pin fixing seat.

6. The new energy vehicle battery pack integrated locking and unlocking mechanism according to claim 5, characterized in that: The elastomer is rubber, thermoplastic elastomer, or silicone.

7. A battery swapping mechanism for a new energy vehicle chassis, employing an integrated unlocking and disengaging mechanism for the new energy vehicle battery pack as described in any one of claims 1-6, characterized in that: The battery swapping bracket is fixedly installed on the body of the new energy vehicle.

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