Battery pack charging racks for new energy vehicle battery swap stations

Abstract

The present application provides a battery pack charging rack used in a new energy vehicle battery swap station, including two charging racks arranged in parallel and multiple groups of guide rail assemblies arranged between the two charging racks, a battery pack exchange station for the transfer assembly to move is formed between the two charging racks, and the multiple groups of guide rail assemblies are arranged in sequence along a first direction; the charging rack includes multiple storage racks and multiple drive assemblies, the multiple storage racks are respectively arranged corresponding to the multiple guide rail assemblies and are movably connected, the multiple drive assemblies respectively drive the multiple storage racks along the second direction to approach or move away from the battery pack exchange station, and the storage racks are used to store at least two battery packs. In the above manner, the storage racks arranged on the two charging racks of the present application share a set of guide rail assemblies, and the storage racks on both sides can be moved to the battery pack exchange station through the guide rail assemblies, which is convenient for the transfer assembly to directly complete the exchange of battery packs by jacking during battery swapping, which not only improves the battery swapping efficiency, but also simplifies the structure of the device.

Description

Technical Field

[0001] The present application relates to the technical field of battery pack replacement racks, and in particular to a battery pack charging rack used in new energy vehicle battery replacement stations. Background Art

[0002] With the increasing popularity of new energy vehicles, the battery pack replacement technology for new energy vehicles is becoming more and more mature. When replacing the battery of a new energy vehicle, the battery pack replaced by the vehicle needs to be transported to the charging rack for charging by a transfer vehicle, and the fully charged battery pack on the charging rack needs to be removed and transported to the vehicle, so that the fully charged battery pack can be installed on the vehicle.

[0003] At present, the layout of charging racks is quite diverse, but these charging racks with different layouts all have the problem that the charging rack is too large and inconvenient to transport. In addition, when the existing charging rack and the transfer vehicle are performing battery replacement operations, it is necessary to use a transverse movement mechanism such as a fork arm or roller set on the charging rack or the transfer vehicle to move the battery pack from the charging rack to the transfer vehicle, or to move the battery pack on the transfer vehicle to the charging rack. However, in order to be able to disassemble and assemble the battery pack of the vehicle, the transfer vehicle is generally provided with a locking and unlocking mechanism for the battery pack. Therefore, in the prior art, the transfer vehicle needs to be provided with both a transverse movement mechanism and a locking and unlocking mechanism to complete the exchange of the battery pack, resulting in the structure of the entire device being too complicated and the cost being too high. At the same time, when the transverse movement of the battery pack is achieved by the transverse movement mechanism set on the transfer vehicle, the transfer vehicle can only perform subsequent operations when the battery pack is moved to the charging rack, resulting in a long waiting time for the transfer vehicle and low battery replacement efficiency.

[0004] How to solve the above problems and provide a battery pack charging rack for use in new energy vehicle battery replacement stations that can automatically replace batteries, has a simple structure, low cost, and high battery replacement efficiency is what technical personnel in this field need to consider. Summary of the invention

[0005] An embodiment of the present application provides a battery pack charging rack applied to a new energy vehicle battery swap station, which is used for exchanging battery packs with a transfer assembly carrying battery packs; it includes two charging racks arranged in parallel and a plurality of guide rail assemblies arranged between the two charging racks, a battery pack exchange station for the transfer assembly to move is formed between the two charging racks, and the plurality of guide rail assemblies are arranged in sequence along a first direction; the charging rack includes a plurality of storage racks and a plurality of drive assemblies, the plurality of storage racks are respectively arranged corresponding to the plurality of guide rail assemblies and are movably connected, the plurality of drive assemblies respectively drive the plurality of storage racks to approach or move away from the battery pack exchange station along a second direction, and the storage rack is used to store at least two battery packs.

[0006] Furthermore, both ends of the guide rail assembly are respectively connected to the two charging racks, and the two storage racks located at the same height of the two charging racks are both slidably connected to the guide rail assembly located at the same height therewith.

[0007] Furthermore, the guide rail assembly is arranged along the second direction, and the driving assembly drives the storage rack arranged corresponding thereto to move from inside the charging rack to directly above the battery pack exchange station or from directly above the battery pack exchange station to inside the charging rack.

[0008] Furthermore, a battery cavity is provided in the storage rack and passes through the storage rack from top to bottom. The battery cavity is used for the transfer assembly moved to the bottom of the storage rack to complete the battery pack exchange between the battery cavity and the transfer assembly by jacking. At least one battery cavity of the multiple storage racks is set as a cavity.

[0009] Furthermore, the storage rack includes two first connecting rods and at least two second connecting rods, the first connecting rods are arranged along the third direction, the second connecting rods are arranged along the second direction, two adjacent second connecting rods and two first connecting rods are connected to each other to enclose a battery cavity, the size of the battery cavity is set to allow the upper part of the battery pack to pass through, and the lower part of the battery pack is connected to the first connecting rods.

[0010] Furthermore, the guide rail assembly includes at least two slide rails arranged in parallel along the third direction, the slide rails are arranged along the second direction, the bottom ends of the at least two second connecting rods are provided with wheel groups along the second direction, and the wheel groups are slidably connected to the slide rails.

[0011] Furthermore, the number of the second connecting rods is three, two battery cavities are provided on one storage rack, and the number of the slide rails is three.

[0012] Furthermore, the driving assembly includes two groups of driven mechanisms and a motor, the two groups of driven mechanisms are symmetrically arranged at two ends of the storage rack, and the motor drives the two groups of driven mechanisms to move synchronously to drive the storage rack to slide along the second direction.

[0013] Furthermore, the two groups of driven mechanisms include a first chain mechanism and a second chain mechanism, the motor is connected to the first chain mechanism or the second chain mechanism, and a transmission mechanism is arranged between the first chain mechanism and the second chain mechanism to realize synchronous action of the first chain mechanism and the second chain mechanism.

[0014] Furthermore, a positioning mechanism is also provided on the charging rack, and the positioning mechanism is used to detect the sliding distance of the storage rack.

[0015] Compared with the prior art, the battery pack charging rack used in the new energy vehicle battery swap station of the present application not only increases the battery pack storage capacity of the device by arranging two charging racks on both sides of the transfer component, but also enables the transfer component to perform battery swap operations from both sides. In addition, the storage racks arranged on the two charging racks share a set of guide rail assemblies, and the storage racks on both sides are moved along the guide rail assemblies to the battery pack exchange station under the action of the driving assembly, so that they are located directly above the transfer component during battery swap, which is convenient for the transfer component to directly complete the battery pack exchange by jacking, so that the transfer component can complete the battery pack exchange through the jacking mechanism and the locking and unlocking mechanism when performing battery swap operations with the charging rack and the vehicle, thereby simplifying the structure of the device and reducing costs, and the transfer component can proceed to the next operation after jacking and installing the battery pack on the storage rack, without waiting for the storage rack to carry the battery pack to the charging position, thereby greatly improving the battery swap efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of a battery pack charging rack used in a new energy vehicle battery swap station of the present application in one embodiment.

[0017] Figure 2 A schematic diagram of the positions of the battery pack charging rack and the transfer components in one embodiment of the battery pack charging rack used in a new energy vehicle battery swap station of the present application.

[0018] Figure 3 for Figure 1 A partial enlarged schematic diagram of area A in the middle, in which the first chain frame is in a separated state.

[0019] Figure 4 This is a structural schematic diagram of the other side of a battery pack charging rack used in a new energy vehicle battery swap station of the present application in one embodiment.

[0020] Figure 5 for Figure 4 A partial enlarged schematic diagram of the middle B area, in which the second chain frame is in a separated state.

[0021] Description of main component symbols:

[0022] Battery pack charging rack 100 for new energy vehicle battery swap stations

[0023] Battery pack exchange station 1

[0024] Charging stand 10

[0025] Supporting part 11

[0026] Connecting rod 12

[0027] Storage rack 20

[0028] The second connecting rod 21

[0029] First connecting rod 22

[0030] Battery cavity 23

[0031] Connecting plate 24

[0032] Mounting plate 25

[0033] Roller 26

[0034] Guide rail assembly 30

[0035] Slide 31

[0036] First chain mechanism 41

[0037] Motor 410

[0038] First sprocket 411

[0039] Second sprocket 412

[0040] First chain frame 413

[0041] First transmission plate 414

[0042] Tensioning mechanism 415

[0043] Second chain mechanism 42

[0044] The third sprocket 421

[0045] Fourth sprocket 422

[0046] Second chain frame 423

[0047] Second transmission plate 424

[0048] Light barrier 425

[0049] Mounting rail 426

[0050] Through-beam photoelectric sensor 427

[0051] Transmission mechanism 43

[0052] First rotating shaft 431

[0053] Coupling 432

[0054] Second rotating shaft 433

[0055] Transfer Component 50

[0056] Lifting components 51

[0057] Battery Pack 60

[0058] Battery module 61

[0059] Outer frame 62

[0060] The following specific implementation methods will further illustrate the present application in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0061] The following description will refer to the accompanying drawings to more fully describe the content of the present application. Shown in the accompanying drawings are exemplary embodiments of the present application. However, the present application can be implemented in many different forms and should not be construed as being limited to the exemplary embodiments set forth herein. These exemplary embodiments are provided to make the present application thorough and complete, and to fully convey the scope of the present application to those skilled in the art. Similar reference numerals represent identical or similar components.

[0062] The terms used herein are only used for the purpose of describing specific exemplary embodiments and are not intended to limit the present application. As used herein, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to also include the plural forms. In addition, when used herein, "including" and / or "comprising" and / or "having", integers, steps, operations, components and / or components, but do not exclude the existence or addition of one or more other features, regions, integers, steps, operations, components and / or groups thereof.

[0063] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this application belongs. In addition, unless explicitly defined herein, terms such as those defined in general dictionaries should be interpreted as having a meaning consistent with their meaning in the relevant technology and the content of this application, and will not be interpreted as an idealized or overly formal meaning.

[0064] The specific implementation methods of the present application are further described in detail below with reference to the accompanying drawings.

[0065] like Figure 1 and Figure 2As shown, a battery pack charging shelf 100 applied to a new energy vehicle battery swap station is used to exchange a battery pack 60 with a transfer assembly 50 carrying a battery pack 60. The battery pack 60 charging shelf 100 applied to a new energy vehicle battery swap station includes two charging racks 10 arranged in parallel and multiple sets of guide rail assemblies 30 arranged between the two charging racks 10. A battery pack exchange station 1 for the transfer assembly 50 to move is formed between the two charging racks 10, and multiple sets of guide rail assemblies 30 are arranged in sequence along a first direction. The charging rack 10 includes a plurality of storage racks 20 and a plurality of drive assemblies. The plurality of storage racks 20 are respectively arranged corresponding to the plurality of guide rail assemblies 30 and are movably connected. The plurality of drive assemblies respectively drive the plurality of storage racks 20 to approach or move away from the battery pack exchange station 1 along a second direction. The storage rack 20 is used to store at least two battery packs 60. The number of drive assemblies is the same as that of the storage racks 20, and a group of drive assemblies drives one storage rack 20 to move.

[0066] In one embodiment, the charging rack 10 is arranged in a square structure, and the first direction is the height direction of the charging rack 10 from the end close to the ground to the end away from the ground when the charging rack 10 is placed on the horizontal ground. The second direction is the width direction of the charging rack 10, and the second direction is arranged perpendicular to the first direction, and the second direction can also be regarded as the direction of the minimum distance between two charging racks 10 arranged parallel to each other. On this basis, the length direction of the charging rack 10 is set to the third direction, and the third direction is arranged perpendicular to the first direction and the second direction respectively. The two charging racks 10 have the same structure and are arranged symmetrically. The transfer assembly 50 enters the battery pack exchange station 1 or leaves the battery pack exchange station 1 along the length direction of the charging rack 10. The transfer assembly 50 can be a track-guided trolley or a trackless trolley. When the transfer assembly 50 moves to the battery pack exchange station 1, the charging racks 10 on both sides can realize the battery exchange operation with the transfer assembly 50, while ensuring the number of battery packs 60 that can be stored in the entire device, the travel of the transfer assembly 50 is reduced, and the battery exchange efficiency is improved. A plurality of storage racks 20 are stacked in the charging rack 10 along the first direction, and the storage racks 20 can slide along the guide rail assembly 30 to the top of the battery pack exchange station 1 under the drive of the corresponding driving assembly, so that when the transfer assembly 50 carries the battery pack 60 to the battery pack exchange station 1, the removed storage racks 20 are just located above the transfer assembly 50, so that the lifting assembly 51 provided on the transfer assembly 50 can lift the battery pack 60 and align it with the storage rack 20. In particular, the lifting assembly 51 can also be provided at the battery pack exchange station 1 to directly lift the entire transfer assembly 50, so as to lift the battery pack 60 to contact with the storage rack 20, thereby completing the battery exchange operation.

[0067] With such a configuration, the present application not only increases the storage capacity of the battery pack 60 of the device by arranging two charging racks 10 on both sides of the transfer assembly 50, but also enables the transfer assembly 50 to be replaced from both sides. In addition, the storage racks 20 arranged on the two charging racks 10 share a set of guide rail assemblies 30. Under the action of the driving assembly, the storage racks 20 on both sides move along the guide rail assemblies 30 to the battery pack exchange station 1, so that they are located directly above the transfer assembly 50 during the battery replacement, which facilitates the transfer assembly 50 to directly complete the exchange of the battery pack 60 by jacking, so that the transfer assembly 50 can complete the battery replacement of the battery pack 60 through the jacking mechanism and the locking and unlocking mechanism when performing the battery replacement operation with the charging rack 10 and the vehicle, thereby simplifying the structure of the device and reducing the cost. And the transfer assembly 50 can proceed to the next operation after jacking and installing the battery pack 60 on the storage rack 20, without waiting for the storage rack 20 to carry the battery pack 60 to the charging position, thereby greatly improving the battery replacement efficiency.

[0068] Further integration Figure 1 and Figure 2 The charging rack 10 includes three groups of support parts 11 arranged at equal intervals along the third direction. The three groups of support parts 11 are arranged on the side of the charging rack 10 away from the battery pack exchange station 1 to support the charging rack 10. The support parts 11 are arranged along the first direction, and their bottom ends are fixed on the ground, so that the charging rack 10 is placed on a plane such as the ground. The top and bottom ends of the three groups of support parts 11 are connected to each other by connecting rods 12, so that the three groups of support parts 11 and the two connecting rods 12 form an integrated structure to form the charging rack 10.

[0069] Furthermore, the two ends of the guide rail assembly 30 are respectively connected to the two charging racks 10, and the two storage racks 20 located at the same height of the two charging racks 10 are both slidably connected to the guide rail assembly 30 located at the same height. In one embodiment, the two ends of the guide rail assembly 30 are respectively connected to the support parts 11 of the two charging racks 10, so that the two charging racks 10 are connected into an integrated structure through the guide rail assembly 30, which is convenient for the overall transportation of the two charging racks 10 and ensures the overall stability of the two charging racks 10, avoiding the problem of unstable placement of the charging rack 10 caused by only setting a single-sided support part 11 on a single charging rack 10. Multiple groups of guide rail assemblies 30 are arranged at equal intervals along the first direction, and the guide rail assembly 30 located at a certain height is a common guide rail for the two charging racks 10 at the current height, so that the two storage racks 20 located at the current height can slide along the guide rail assembly 30, avoiding the need to set separate guide rails on the two charging racks 10, and minimizing the structural complexity of the device.

[0070] See also Combination Figure 1 and Figure 2, the guide rail assembly 30 is arranged along the second direction, and the driving assembly drives the storage rack 20 arranged corresponding thereto to move from the charging rack 10 to directly above the battery pack exchange station 1 or from directly above the battery pack exchange station 1 to the charging rack 10. In one embodiment, the number of the multiple groups of guide rail assemblies 30 is set to three groups, and the number of guide rail assemblies 30 is determined according to the number of storage racks 20 stacked on a single charging rack 10. There are three storage racks 20, and the storage racks 20 can also be set to two or four, and the specific number is not limited. The three storage racks 20 are arranged at equal intervals along the first direction and are horizontally arranged in the charging rack 10 so as to slide along the guide rail assembly 30 and enter and exit the battery pack exchange station 1.

[0071] Furthermore, a set of guide rail assemblies 30 includes three slide rails 31, which are located at the same height and respectively located at the two ends and below the middle position of the storage rack 20, so as to provide more uniform and stable support for the storage rack 20 and ensure the walking accuracy of the storage rack 20. The walking accuracy of the storage rack 20 is ±1.5mm. The slide rail 31 arranged at the middle position supports the middle part of the storage rack 20 to prevent the middle section of the storage rack 20 from bending and deforming downward after being loaded. The slide rail 31 is arranged along the second direction, and the two ends of the slide rail 31 are respectively connected to the two support parts 11 on the two charging racks 10 that are in the same vertical plane as the slide rail 31, and then the two charging racks 10 are connected to each other by multiple slide rails 31 to form an integrated structure, which is not only convenient for the overall transportation of the charging rack 10, but also ensures the stability of the charging rack 10 when it is placed.

[0072] See also Figure 1 and Figure 2, a battery cavity 23 that runs through the storage rack 20 from top to bottom is provided in the storage rack 20. The battery cavity 23 is used for the transfer assembly 50 that moves to the bottom of the storage rack 20 to complete the exchange of the battery pack 60 between the battery cavity 23 and the transfer assembly 50 by jacking. At least one battery cavity 23 of the multiple storage racks 20 is set as a cavity. A sensor for detecting whether a battery pack 60 is placed in the battery cavity 23 should be provided. The sensor can be a pressure sensor, etc., and the sensor is connected to a control device (not shown in the figure) for controlling the execution of the action of the entire device by signal. The control device can be an industrial controller such as a PLC, which is used to connect signals with each device of the present application, thereby controlling the execution of the action of the entire device. The connection method between the control device and each device belongs to those skilled in the art and can be designed by themselves according to the present application, and will not be described in detail in the present application. In one embodiment, the disassembly and assembly of the battery pack 60 by the transfer assembly 50 by jacking is based on the locking and unlocking mechanism used in the prior art. By providing a locking and unlocking mechanism (not shown in the figure) on the transport component 50, the locking and unlocking mechanism is a locking and unlocking gun used in the prior art, which can tighten or loosen nuts and other fasteners to achieve the connection or removal of the battery pack 60 and the vehicle body, which will not be described in detail here. The transport component 50 travels back and forth between the vehicle to be replaced and the charging rack 10, and cooperates with the lifting component 51 and the locking and unlocking mechanism provided on the transport component 50 to automatically complete the entire battery replacement operation. When the transport component 50 moves to the bottom of the vehicle to be replaced or the battery pack exchange station 1, the lifting component 51 lifts the battery pack 60 to a preset position, and synchronously drives the locking and unlocking mechanism to rise to the working height, and then the locking and unlocking mechanism completes the installation or removal of the battery pack 60 on the vehicle or the storage rack 20. The battery cavity 23 is set to a structural form that passes through the storage rack 20 from top to bottom, so that the battery pack 60 is lifted from the bottom of the storage rack 20 to the battery cavity 23 and fixed on the storage rack 20.

[0073] See also Figure 1 and Figure 2, the storage rack 20 includes two first connecting rods 22 and at least two second connecting rods 21. The first connecting rods 22 are arranged along the third direction, and the second connecting rods 21 are arranged along the second direction. Two adjacent second connecting rods 21 and the two first connecting rods 22 are connected to each other to enclose a battery cavity 23. The size of the battery cavity 23 is set to allow the upper part of the battery pack 60 to pass through, and the lower part of the battery pack 60 is connected to the first connecting rod 22. In one embodiment, the third direction is the length direction when the charging rack 10 is horizontally placed on the ground. The second connecting rods 21 are set to three, and two battery cavities 23 are provided on one storage rack 20. The battery cavities 23 on the storage rack 20 are set to two, and the movement of the battery packs 60 in the two battery cavities 23 can be realized by a set of driving components, which reduces the number of driving components of the device to a certain extent, thereby reducing the cost. The overall structure formed by enclosing the storage rack 20 with two first connecting rods 22 and three second connecting rods 21 is in the shape of a Chinese character 'Ri'. Among them, the two second connecting rods 21 respectively connect the head and tail ends of the two first connecting rods 22, and the other second connecting rod 21 is arranged at the middle position of the first connecting rod 22 to connect the middle positions of the two first connecting rods 22. It should be noted that the structure formed by enclosing the three second connecting rods 21 and the two first connecting rods 22 has two vertically penetrating spaces, and the above spaces are the battery cavities 23, which is convenient for the lifting component 51 to lift the battery pack 60 vertically and pass through from below the battery cavity 23 and then enter the battery cavity 23 when the storage rack 20 is moved directly above the transfer component 50.

[0074] Specifically, those skilled in the art should know that the above-mentioned transfer method of the battery pack 60 is based on the prior art of disassembling and assembling the battery pack 60 by using a locking and unlocking gun. When disassembling and assembling the battery pack 60 in the way of using a locking and unlocking gun, the structure of the battery pack 60 is generally set to include a battery module 61 and an outer frame 62 surrounding the outer peripheral wall of the battery module 61. A plurality of first connection holes are circumferentially arranged on the outer frame 62, and the first connection holes penetrate the outer frame 62 in the vertical direction to facilitate alignment with the second connection holes provided on the vehicle body and then connection by bolts or screws, etc. On this basis, the size of the battery cavity 23 of the present application needs to be set to be not less than the size of the battery module 61 and not greater than the size of the outer frame 62 to ensure that when the battery pack 60 is lifted into the battery cavity 23, the battery module 61 is located in the battery cavity 23, and the top end of the outer frame 62 abuts against the bottom end of the first connecting rod 22. Particularly, a plurality of third connection holes corresponding to the positions of the plurality of first connection holes are arranged at the bottom end of the first connecting rod 22 in the vertical direction, so as to fix the battery pack 60 on the storage rack 20 or disassemble the battery pack 60 fixed on the storage rack 20 by using a locking and unlocking gun after the outer frame 62 and the first connecting rod 22 are aligned.

[0075] Further combined with Figure 3The guide rail assembly 30 includes at least two slide rails 31 arranged in parallel along the third direction, the slide rails 31 are arranged along the second direction, and the bottom ends of at least two second connecting rods 21 are provided with wheel groups along the second direction, and the wheel groups are slidably connected to the slide rails 31. In one embodiment, the number of the slide rails 31 is set to three, corresponding to the three second connecting rods 21 of the storage rack 20. The wheel group runs on the slide rails 31 to drive the storage rack 20 to slide along the direction of the slide rails 31. The wheel group includes a connecting plate 24, a mounting plate 25 and a roller 26. The connecting plate 24 is arranged in a U-shaped structure and is arranged at the bottom end of the second connecting rod 21 along the length direction of the second connecting rod 21. There are four mounting plates 25, and the four mounting plates 25 are respectively arranged on both sides of the head and tail ends of the connecting plate 24, and are connected by welding or bolts. There are two rollers 26, and the two rollers 26 are respectively installed at the head and tail ends of the connecting plate 24, and are rotatably connected with the two mounting plates 25 at the ends thereof. In particular, flange structures are provided on both sides of the roller 26 to form a sliding groove between the flange structure and the roller 26. A sliding protrusion accommodated in the sliding groove is provided on the slide rail 31 along its length direction, so that when the roller 26 moves on the slide rail 31, the flange structure can be close to the side wall of the sliding protrusion to ensure that the roller 26 will not deviate when moving.

[0076] Further integration Figure 4 The driving assembly includes two sets of driven mechanisms and a motor 410. The two sets of driven mechanisms are symmetrically arranged at both ends of the storage rack 20. The motor 410 drives the two sets of driven mechanisms to move synchronously to drive the storage rack 20 to slide along the second direction. In one embodiment, the two sets of driven mechanisms include a first chain mechanism 41 and a second chain mechanism 42. The motor 410 is connected to the first chain mechanism 41 or the second chain mechanism 42. A transmission mechanism 43 is arranged between the first chain mechanism 41 and the second chain mechanism 42 to achieve synchronous movement of the first chain mechanism 41 and the second chain mechanism 42. Preferably, the motor 410 drives the first chain mechanism 41 to move, and the first chain mechanism 41 drives the wheel set arranged at one end of the storage rack 20 to move along the slide rail 31. At the same time, the first chain mechanism 41 drives the second chain mechanism 42 to move through the transmission mechanism 43, and the second chain mechanism 42 drives the wheel group arranged at the other end of the storage rack 20 to move along the slide rail 31, thereby realizing the synchronous movement of the two sets of wheel groups arranged at both ends of the storage rack 20, thereby ensuring the movement accuracy of the storage rack 20.

[0077] In the present application, the motor 410 can provide forward drive and reverse drive to ensure that the storage rack 20 can remain relatively still after moving to the preset position, and the accuracy of the motor 410 in controlling the movement of the storage rack 20 can reach ±2mm. According to the understanding of the technical solution of the present application by those skilled in the art, the driven mechanism of the present application can also be set as a gear rack or other mechanism to realize the sliding of the storage rack 20.

[0078] Further integration Figure 3 In one embodiment, the first chain mechanism 41 includes a first chain frame 413, a first sprocket 411, a second sprocket 412 and a first chain. The first chain frame 413 is arranged in a concave structure to form a space for the chain to be installed therein. The first chain frame 413 is arranged along the width direction of the charging rack 10, one end of which is connected to the support portion 11 closest to it, and the other end of which is connected to the first chain frame 413 arranged in the same direction on the opposite storage rack 20, and the two sets of first chain frames 413 connected to each other are arranged in an integrated structure, thereby simplifying the structure of the entire device. The motor 410 is installed on the outer side of one end of the first chain frame 413 away from the support part 11, the first sprocket 411 is rotatably set in the first chain frame 413 and is connected to the driving end of the motor 410, the second sprocket 412 is rotatably set in the other end of the first chain frame 413 away from the first sprocket 411, and the first chain is sleeved on the outer periphery of the first sprocket 411 and the second sprocket 412, thereby forming a chain transmission mechanism 43. At the same time, a first transmission plate 414 is arranged on the outer side of the mounting plate 25 close to the second sprocket 412 of the first wheel group corresponding to the first chain mechanism 41, and the first transmission plate 414 is arranged in an L-shaped structure, and the horizontal end of the first transmission plate 414 is connected to the mounting plate 25, and the vertical end of the first transmission plate 414 is connected to the first chain, so that when the motor 410 drives the first sprocket 411 to rotate, the first sprocket 411 drives the first chain to rotate, and the first chain then drives the first transmission plate 414 connected thereto to move in the first chain frame 413, so that the first transmission plate 414 drives the first wheel group connected thereto to slide along the slide rail 31. In particular, the first chain mechanism 41 also includes a tensioning mechanism 415, which is a disc spring tensioning mechanism 415 arranged on the first transmission plate 414, and is used to keep the chain in a tensioned state. The disc spring tensioning mechanism 415 is a common technology and is not specifically limited in this application.

[0079] Further integration Figure 4In one embodiment, the transmission mechanism 43 includes a first rotating shaft 431, a second rotating shaft 433 and a coupling 432. The first rotating shaft 431 and the second rotating shaft 433 are coaxially arranged, and the first rotating shaft 431 and the second rotating shaft 433 are arranged along the third direction. One end of the first rotating shaft 431 is connected to the second sprocket 412, and the other end thereof is connected to one end of the coupling 432. One end of the second rotating shaft 433 is connected to the third sprocket 421, and the other end thereof is connected to the other end of the coupling 432. The coupling 432 is horizontally fixed to the support portion 11 located at the middle position along the third direction. When the second sprocket 412 rotates, the second sprocket 412 drives the second chain mechanism 42 to move through the first rotating shaft 431, the second rotating shaft 433 and the coupling 432, thereby ensuring that the motion states of the first chain mechanism 41 and the second chain mechanism 42 are the same. According to the understanding of the technical solution of the present application by those skilled in the art, the transmission mechanism 43 can also be other mechanisms for realizing synchronous transmission, such as a transmission belt mechanism.

[0080] Further integration Figure 5 In one embodiment, the second chain mechanism 42 includes a second chain frame 423, a third sprocket 421, a fourth sprocket 422 and a second chain. The second chain frame 423 is arranged at the other end of the storage rack 20 away from the first chain frame 413 and is arranged along the width direction of the charging rack 10. The structure of the second chain frame 423 is the same as that of the first chain frame 413, which will not be repeated here. The third sprocket 421 and the fourth sprocket 422 are both rotatably arranged in the second chain frame 423. The third sprocket 421 is coaxially arranged with the second sprocket 412 and connected through the transmission mechanism 43. The third sprocket 421 is connected with the fourth sprocket 422 through the second chain, and the fourth sprocket 422 is coaxially arranged with the first sprocket 411. In addition, the second chain is connected to the corresponding first wheel group through the second transmission plate 424. The structure and relative connection relationship of the second transmission plate 424 and the first transmission plate 414 are the same, which will not be repeated here. When the motor 410 drives the first sprocket 411 to rotate, the first sprocket 411 drives the second sprocket 412 to rotate synchronously through the first chain. When the second sprocket 412 rotates, the second sprocket 412 drives the third sprocket 421 to rotate through the first rotating shaft 431, the second rotating shaft 433 and the coupling 432, thereby realizing the synchronous rotation of the second sprocket 412 and the third sprocket 421, thereby ensuring that the motion states of the first chain and the second chain are the same.

[0081] Further integration Figure 5, a positioning mechanism is also provided on the charging rack 10, and the positioning mechanism is used to detect the sliding distance of the storage rack 20. In one embodiment, the positioning mechanism includes a mounting rail 426 and a plurality of opposing photoelectric sensors 427. The mounting rail 426 is provided on a side of the second transmission plate 424 close to the first transmission plate 414, and is provided along the width direction of the charging rack 10. The two ends of the mounting rail 426 are respectively fixed to two groups of support parts 11 located in the same vertical plane therewith. A plurality of opposing photoelectric sensors 427 are provided on the mounting rail 426 along its length direction, and a light shielding sheet 425 is provided on a side of the second transmission plate 424 close to the opposing photoelectric sensor 427, and one end of the light shielding sheet 425 close to the opposing photoelectric sensor 427 is provided along the vertical direction. When the light shielding sheet 425 slides with the storage rack 20, it actively blocks the opposing photoelectric sensor 427, thereby accurately controlling the sliding distance of the storage rack 20. In particular, the light shielding sheet 425 is mainly arranged in the middle section of the mounting rail 426, so that the sliding state of the storage racks 20 on both sides thereof can be detected by a group of positioning mechanisms, further simplifying the structure of the entire device.

[0082] The specific working method of the present application is described below. When the transfer component 50 removes the battery pack 60 of the vehicle to be replaced and transports it to the battery pack exchange station 1, the control device controls the drive component corresponding to the storage rack 20 where the cavity is located to drive the storage rack 20 to slide to just above the battery pack 60 carried by the transfer component 50 after the current position of the cavity is detected by the sensor, so that the transfer component 50 can be aligned and the battery pack 60 to be charged can be placed in the cavity through the lifting component 51 and the locking and unlocking mechanism. Subsequently, the driving component drives the current storage rack 20 to reset, and the charging device (not shown in the figure) charges the battery pack 60 to be charged. When the battery pack 60 to be charged is removed during transportation, the control device controls the drive component corresponding to the storage rack 20 where the fully charged battery pack 60 is located to drive the storage rack 20 to move to the battery pack exchange station 1 according to the position of the fully charged battery pack 60 detected by the sensor, and the lifting component 51 is reset. If the current transfer assembly 50 is just below the moving storage rack 20, the fully charged battery pack 60 is removed and placed on the transfer assembly 50 through the lifting assembly 51 and the locking and unlocking mechanism. If the current transfer assembly 50 is not directly below the moving storage rack 20, the control device controls the transfer assembly 50 to move to the directly below the storage rack 20, and then removes the fully charged battery pack 60 and places it on the transfer assembly 50 through the lifting assembly 51 and the locking and unlocking mechanism. Finally, the transfer assembly 50 transfers the loaded fully charged battery pack 60 and installs it on the vehicle.

[0083] In the above, the specific embodiments of the present application are described with reference to the accompanying drawings. However, those skilled in the art will appreciate that various changes and substitutions may be made to the specific embodiments of the present application without departing from the scope of the present application. These changes and substitutions are all within the scope defined by the present application.

Claims

1. A battery pack charging rack used in a new energy vehicle battery swap station, used to exchange battery packs with a transfer assembly carrying battery packs; characterized in that: The invention comprises two charging racks arranged in parallel and a plurality of guide rail assemblies arranged between the two charging racks, a battery pack exchange station for the transfer assembly to move is formed between the two charging racks, and the plurality of guide rail assemblies are arranged in sequence along a first direction; the charging rack comprises a plurality of storage racks and a plurality of drive assemblies, the plurality of storage racks are respectively arranged corresponding to the plurality of guide rail assemblies and are movably connected, the plurality of drive assemblies respectively drive the plurality of storage racks to approach or move away from the battery pack exchange station along a second direction, and the storage rack is used to store at least two battery packs; a plurality of guide rail assemblies are arranged in the storage rack through the upper and lower parts. The battery cavity of the storage rack is used for the transfer assembly moved to the bottom of the storage rack to complete the battery pack exchange between the battery cavity and the transfer assembly by jacking. At least one of the battery cavities of the multiple storage racks is configured as a hollow cavity. The transfer assembly is provided with a lifting assembly and a locking and unlocking mechanism. When the transfer assembly moves to the bottom of the vehicle to be replaced or to the battery pack exchange station, the lifting assembly lifts the battery pack to a preset position and synchronously drives the locking and unlocking mechanism to rise to the working height. Then, the locking and unlocking mechanism completes the installation or removal of the battery pack on the vehicle or the storage rack.

2. The battery pack charging rack used in a new energy vehicle battery replacement station as claimed in claim 1, characterized in that: Both ends of the guide rail assembly are respectively connected to the two charging racks, and the two storage racks located at the same height of the two charging racks are both slidably connected to the guide rail assembly located at the same height.

3. The battery pack charging rack used in a new energy vehicle battery replacement station as claimed in claim 1, characterized in that: The guide rail assembly is arranged along the second direction, and the driving assembly drives the storage rack correspondingly arranged thereto to move from inside the charging rack to directly above the battery pack exchange station or from directly above the battery pack exchange station to inside the charging rack.

4. The battery pack charging rack used in a new energy vehicle battery replacement station as claimed in claim 1, characterized in that: The storage rack includes two first connecting rods and at least two second connecting rods, the first connecting rods are arranged along a third direction, the second connecting rods are arranged along the second direction, two adjacent second connecting rods and two first connecting rods are connected to each other to enclose a battery cavity, the size of the battery cavity is set to allow the upper part of the battery pack to pass through, and the lower part of the battery pack is connected to the first connecting rods.

5. The battery pack charging rack used in a new energy vehicle battery replacement station as claimed in claim 4, characterized in that: The guide rail assembly includes at least two slide rails arranged in parallel along the third direction, the slide rails are arranged along the second direction, and the bottom ends of the at least two second connecting rods are each provided with a wheel set along the second direction, and the wheel set is slidably connected to the slide rails.

6. The battery pack charging rack used in a new energy vehicle battery replacement station as claimed in claim 5, characterized in that: The number of the second connecting rods is three, two battery cavities are arranged on one storage rack, and the number of the slide rails is three.

7. The battery pack charging rack used in a new energy vehicle battery replacement station as claimed in claim 1, characterized in that: The driving assembly includes two groups of driven mechanisms and a motor. The two groups of driven mechanisms are symmetrically arranged at two ends of the storage rack. The motor drives the two groups of driven mechanisms to move synchronously to drive the storage rack to slide along the second direction.

8. The battery pack charging rack used in a new energy vehicle battery swap station as claimed in claim 7, characterized in that: The two groups of driven mechanisms include a first chain mechanism and a second chain mechanism, the motor is connected to the first chain mechanism or the second chain mechanism, and a transmission mechanism is provided between the first chain mechanism and the second chain mechanism to achieve synchronous action of the first chain mechanism and the second chain mechanism.

9. The battery pack charging rack used in a new energy vehicle battery replacement station as claimed in claim 1, characterized in that: The charging rack is also provided with a positioning mechanism, and the positioning mechanism is used to detect the sliding distance of the storage rack.

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