A box, a battery box and a railway vehicle

Abstract

The application discloses a box body, a battery box and a railway vehicle, and relates to the technical field of railway vehicles. In the battery box, the box body is a hollow box structure; the box door is arranged on the box body and can be opened and closed; the first guide rail assembly is installed on the box body and is used for slidably matching the sliding assembly at the bottom of the battery; the second guide rail assembly is installed on the box door; when the box door is in an open state, the second guide rail assembly is located at the side of the first guide rail assembly and is used for slidably matching the sliding assembly; the second guide rail assembly is a folding structure; when the second guide rail assembly is in a folded state, the second guide rail assembly is inwardly retracted to the inner side of the box door; when the second guide rail assembly is in an unfolded state, the second guide rail assembly is outwardly extended to the outer side of the box door; and the sliding assembly can slide on the guide rail segment of the second guide rail assembly located on the outer side of the box door, so that the whole battery can be pulled out of the box body. The whole battery can be pulled out of the box body by using the box, and the cost is low.

Description

Technical Field

[0001] This application relates to the field of rail vehicle technology, and more specifically, to a battery box housing. Furthermore, this application also relates to a battery box including the aforementioned housing. Moreover, this application further relates to a rail vehicle including the aforementioned battery box. Background Technology

[0002] In the rail industry, battery boxes are often installed on rail vehicles. A battery box refers to a box in which batteries are placed, and a battery trolley is set below the batteries to allow the batteries to move in or out of the box. Because the travel distance of the battery trolley is relatively short, the batteries cannot be completely pulled out of the box. During maintenance, it is often necessary to use special tools to observe or inspect the parts of the structure that the batteries have not been pulled out and are still in the box, which causes inconvenience to maintenance. To address this, a swing arm structure has gradually emerged in this field to push the batteries into or pull them out of the box as a whole. However, the weight of the battery box with the swing arm structure and the space required during use are increased accordingly, which may cause interference with other components on the existing rail vehicle, and the modification cost is high.

[0003] In conclusion, how to reduce the difficulty of battery box maintenance while also reducing modification costs is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the purpose of this application is to provide a battery box in which the entire battery can be pulled out from the box body, and the modification cost is low.

[0005] Another object of this application is to provide a battery box including the above-described enclosure.

[0006] Another object of this application is to provide a rail vehicle including the aforementioned battery box.

[0007] To achieve the above objectives, this application provides the following technical solution:

[0008] A battery box enclosure, comprising:

[0009] The main body of the box is a hollow box structure;

[0010] A door, which can be opened and closed, is provided on the body of the box to close or open the body of the box;

[0011] The first guide rail assembly is installed on the housing body and is used to slidably cooperate with the sliding assembly at the bottom of the battery.

[0012] The second guide rail assembly is installed on the door. When the door is open, the second guide rail assembly is located on the side of the first guide rail assembly and is used to slide in conjunction with the sliding assembly. The second guide rail assembly has a folding structure. When the second guide rail assembly is folded, it is retracted inside the door. When the second guide rail assembly is unfolded, it extends outside the door. The sliding assembly can slide on the guide rail section of the second guide rail assembly located outside the door, so that the entire battery can be pulled out from the housing body.

[0013] Preferably, the second guide rail assembly includes an inner guide rail assembly and an outer guide rail assembly;

[0014] The inner extension guide rail assembly is fixed to the box door, and the inner extension guide rail assembly is recessed within the box door;

[0015] The outer guide rail assembly is rotatably connected to the free end of the door. When the second guide rail assembly is in a folded state, the outer guide rail assembly is engaged with the inner guide rail assembly.

[0016] Preferably, the first guide rail assembly includes three first guide rails, the inner extension guide rail assembly includes three second guide rails, and the outer extension guide rail assembly includes three third guide rails.

[0017] The first guide rail extends along the length of the box body, and three first guide rails are arranged along the width of the box body.

[0018] The second guide rail extends along the length of the door, and three second guide rails are arranged along the width of the door;

[0019] The three third guide rails are rotatably connected to the door along its width.

[0020] Preferably, the extended guide rail assembly further includes a connector, and the three third guide rails are arranged in parallel, with the connector connected to the three third guide rails.

[0021] Preferably, one of the connector and the door is provided with a latch, and the other is provided with a latch assembly. When the latch collidees with the latch assembly, the latch can be locked in the latch assembly, and the latch assembly can unlock the latch so that the latch can be disengaged from the latch assembly.

[0022] Preferably, the width of the third guide rail is greater than the width of the second guide rail, and several of the third guide rails can be fastened to the outer side of the corresponding second guide rail.

[0023] Preferably, the third guide rail has a transition guide portion, and the inner sides of the third guide rail that are close to each other on opposite sidewalls have the transition guide portion, and a guide groove extending along the length direction of the third guide rail is provided between the two transition guide portions;

[0024] The transition guide includes a size gradient structure, such that the groove of the second guide rail gradually transitions to the groove of the third guide rail through the guide groove.

[0025] Preferably, the third guide rail has a first support portion, the box door has a second support portion, and when the second guide rail assembly is in the unfolded state, the first support portion abuts against the second support portion;

[0026] Furthermore, the first support portion and / or the second support portion have a buffer structure, through which the first support portion and the second support portion can abut against each other.

[0027] A battery box includes a battery and a housing as described in any of the preceding claims.

[0028] A rail vehicle including the aforementioned battery box.

[0029] In this application, the enclosure body can be rectangular or trapezoidal, etc. The inner cavity of the enclosure body is used to place the battery. Usually, the length of the enclosure body is greater than the width of the enclosure body. The enclosure body has an opening at one end along its own length direction, which is used to put the battery into the interior of the enclosure body through the opening. The door adopts a plate structure, and its left end is rotatably connected to the lower side of the opening at the right end of the enclosure body by a hinge or the like, so that the enclosure body can be opened or closed.

[0030] Correspondingly, a first guide rail assembly is installed on the inner wall of the enclosure body, and a second guide rail assembly is installed on the inner surface of the enclosure door. After the enclosure door is opened, both the second guide rail assembly and the first guide rail assembly extend along the length of the enclosure body. During the process of dragging the battery to completely pull it out of the enclosure body, the sliding component at the bottom of the battery first moves laterally along the first guide rail assembly, and then the sliding component detaches from the structure of the first guide rail assembly and moves onto the second guide rail assembly, and continues to move laterally along the second guide rail assembly.

[0031] In particular, the second guide rail assembly has a folding structure. For example, the second guide rail assembly includes a telescopic guide rail. When the second guide rail assembly is in the folded state, all four sides of the second guide rail assembly are located inside the periphery of the door, so that the door can be fastened to the body of the enclosure. When the second guide rail assembly is in the unfolded state, its length is greater than its length in the folded state, thereby extending the travel distance of the battery along the length of the enclosure. That is, the sliding component at the bottom of the battery can move along the second guide rail assembly to the guide rail section that extends to the outside of the door, so that the entire battery can be moved out of the enclosure for easy maintenance of the battery box. Furthermore, by adjusting the type of the second guide rail assembly, the entire battery can be pulled out of the enclosure, with low modification costs. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0033] Figure 1 A schematic diagram of the unfolded state of the second guide rail assembly in a specific embodiment provided in this application;

[0034] Figure 2 A schematic diagram of the folded state of the second guide rail assembly in a specific embodiment provided in this application;

[0035] Figure 3 This is a partial structural diagram of a specific embodiment provided in this application.

[0036] Figure label:

[0037] 1-Box body; 2-Box door; 21-Second support part; 3-First guide rail assembly; 31-First guide rail; 4-Second guide rail assembly; 41-Inner extension guide rail assembly; 411-Second guide rail; 42-Outer extension guide rail assembly; 421-Third guide rail; 422-Connector; 423-Transition guide part; 424-First support part; 5-Lock tongue; 6-Lock assembly. Detailed Implementation

[0038] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0039] The core of this application is to provide a battery box that allows the entire battery to be pulled out of the box body, with low modification costs. Another core aspect of this application is to provide a battery box including the aforementioned box body. Yet another core aspect of this application is to provide a rail vehicle including the aforementioned battery box.

[0040] This application provides a battery box, including a box body 1, a box door 2, a first guide rail assembly 3, and a second guide rail assembly 4. The box body 1 is a hollow box structure; the box door 2 is closable on the box body 1 to close or open the box body 1; the first guide rail assembly 3 is installed on the box body 1 and slidably engages with a sliding assembly at the bottom of the battery; the second guide rail assembly 4 is installed on the box door 2. When the box door 2 is open, the second guide rail assembly 4 is located on the side of the first guide rail assembly 3 and slidably engages with the sliding assembly. The second guide rail assembly 4 has a folding structure; when folded, the second guide rail assembly 4 is retracted inside the box door 2; when unfolded, the second guide rail assembly 4 extends outside the box door 2. The sliding assembly can slide on the guide rail section of the second guide rail assembly 4 located outside the box door 2, allowing the entire battery to be pulled out of the box body 1.

[0041] Please refer to Figure 1 and Figure 2 The enclosure body 1 can be rectangular or trapezoidal, etc. The inner cavity of the enclosure body 1 is used to place the battery. Usually, the length of the enclosure body 1 is greater than the width of the enclosure body 1. The enclosure body 1 has an opening at one end along its own length direction, which is used to put the battery into the interior of the enclosure body 1 through the opening. The door 2 adopts a plate structure, and its left end is rotatably connected to the lower side of the opening at the right end of the enclosure body 1 by a hinge, etc., so that the enclosure body 1 can be opened or closed.

[0042] Correspondingly, a first guide rail assembly 3 is installed on the inner wall of the box body 1, and a second guide rail assembly 4 is installed on the inner surface of the box door 2. When the box door 2 is opened, as... Figure 1 and Figure 2 As shown, both the second guide rail assembly 4 and the first guide rail assembly 3 extend along the length of the housing body 1. During the process of dragging the battery and pulling it completely out of the housing body 1, the sliding component at the bottom of the battery first moves laterally along the first guide rail assembly 3, and then the sliding component detaches from the structure of the first guide rail assembly 3 and moves onto the second guide rail assembly 4, and continues to move laterally along the second guide rail assembly 4.

[0043] In particular, the second guide rail assembly 4 has a folding structure. For example, the second guide rail assembly 4 includes a telescopic guide rail. When the second guide rail assembly 4 is in the folded state, such as... Figure 2As shown, the second guide rail assembly 4 is located on the inner side of the periphery of the door 2, so that the door 2 can be fastened to the body 1. When the second guide rail assembly 4 is in the unfolded state, as shown... Figure 1 As shown, the length of the second guide rail assembly 4 when it is in the unfolded state is greater than its length when it is in the folded state, so as to extend the travel of the battery along the length direction of the housing body 1. That is, the sliding component at the bottom of the battery can move along the second guide rail assembly 4 to the guide rail section that extends to the outside of the housing door 2, so that the entire battery can be moved out of the housing body 1 for easy maintenance of the battery box. Moreover, by adjusting the type of the second guide rail assembly 4, the entire battery can be pulled out of the housing, and the modification cost is low.

[0044] Based on the above embodiments, the second guide rail assembly 4 includes an inner guide rail assembly 41 and an outer guide rail assembly 42; the inner guide rail assembly 41 is fixed to the door 2 and is recessed within the door 2; the outer guide rail assembly 42 is rotatably connected to the free end of the door 2, and when the second guide rail assembly 4 is in a folded state, the outer guide rail assembly 42 is engaged with the inner guide rail assembly 41.

[0045] Please refer to Figure 1 The door 2 is rotatably connected to the box body 1 along its left end along its own length direction. A connecting seat is provided at the right end of the door 2 along its own length direction to rotatably connect one end of the outer guide rail assembly 42. The inner guide rail assembly 41 is fixedly installed on the door 2. The guide rail width of one of the inner guide rail assembly 41 and the outer guide rail assembly 42 is greater than the guide rail width of the other, and the guide rail with smaller width can be inserted into the guide rail with larger width. Thus, the guide rail in the inner guide rail assembly 41 and the corresponding guide rail in the outer guide rail assembly 42 are engaged with each other, so that the inner guide rail assembly 41 and the outer guide rail assembly 42 can be engaged. Moreover, the periphery of the inner guide rail assembly 41 is located inside the periphery of the door 2, and when the outer guide rail assembly 42 is engaged with the inner guide rail assembly 41, the periphery of the outer guide rail assembly 42 is also located inside the periphery of the door 2, so that the door 2 can be closed.

[0046] When maintenance is required, after opening the cabinet door 2, rotate the outer guide rail assembly 42 to rotate the second guide rail assembly 4 to the desired position. Figure 1 In the unfolded state shown, the outer guide rail assembly 42 is located on the side of the inner guide rail assembly 41, and the sliding component slides away from the structure of the inner guide rail assembly 41, allowing it to slide onto the outer guide rail assembly 42 and continue to move laterally along it. After maintenance, the battery is pushed back into the housing body 1, and then the outer guide rail assembly 42 is rotated, causing the second guide rail assembly 4 to rotate as shown. Figure 2 In the folded state shown, the outer guide rail assembly 42 is fastened to the inner guide rail assembly 41, thereby closing the door 2.

[0047] Based on the above embodiments, the first guide rail assembly 3 includes three first guide rails 31, the inner extension guide rail assembly 41 includes three second guide rails 411, and the outer extension guide rail assembly 42 includes three third guide rails 421; the first guide rails 31 extend along the length direction of the box body 1, and the three first guide rails 31 are arranged along the width direction of the box body 1; the second guide rails 411 extend along the length direction of the box door 2, and the three second guide rails 411 are arranged along the width direction of the box door 2; the three third guide rails 421 are rotatably connected to the box door 2 along its own width direction.

[0048] Please refer to Figure 1 and Figure 2 All three first guide rails 31 are fixed inside the box body 1 and arranged along the width direction of the box body 1. For example, one first guide rail 31 is located on the upper side of the box body 1 along its own width direction, another first guide rail 31 is located on the lower side of the box body 1 along its own width direction, and the remaining first guide rail 31 is located in the middle position of the box body 1 along its own width direction; and one end of the first guide rail 31 extends to the right end opening of the box body 1, and the other end extends to the left end of the box body 1 along its own depth direction.

[0049] Correspondingly, three second guide rails 411 are fixed to the inner surface of the door 2 and arranged along the width direction of the body 1. For example, one second guide rail 411 is located on the upper side of the door 2 along its own width direction, another second guide rail 411 is located on the lower side of the door 2 along its own width direction, and the remaining second guide rail 411 is located in the middle position of the door 2 along its own width direction; and one end of the second guide rail 411 extends to the left end of the door 2 where it is rotatably connected to the body 1, and the other end extends to the right end of the door 2.

[0050] Furthermore, one end of each of the three third guide rails 421 is rotatably connected to the right end of the door 2, and they are connected sequentially along the width of the door 2. That is, one third guide rail 421 is rotatably connected to the upper side of the door 2 along its own width, another third guide rail 421 is rotatably connected to the lower side of the door 2 along its own width, and the remaining third guide rail 421 is rotatably connected to the middle position of the door 2 along its own width.

[0051] After opening the box door 2 and adjusting the second guide rail assembly 4 to its unfolded state, as follows... Figure 1As shown, the first guide rail 31, the second guide rail 411, and the third guide rail 421 extend in the same direction, and a portion of the sliding part of the sliding assembly can slide sequentially along the upper first guide rail 31, the second guide rail 411, and the third guide rail 421, while another portion of the sliding part of the sliding assembly can slide sequentially along the lower first guide rail 31, the second guide rail 411, and the third guide rail 421, and the remaining sliding part can slide sequentially along the middle first guide rail 31, the second guide rail 411, and the third guide rail 421.

[0052] After adjusting the second guide rail assembly 4 to a folded state, as... Figure 2 As shown, the first guide rail 31, the second guide rail 411, and the third guide rail 421 extend in the same direction. The second guide rail 411, which is fixed on the upper side of the box door 2, is fastened to the third guide rail 421 connected to the upper side of the box door 2. The second guide rail 411, which is fixed on the lower side of the box door 2, is fastened to the third guide rail 421 connected to the lower side of the box door 2. The second guide rail 411, which is fixed at the middle position of the box door 2, is fastened to the third guide rail 421 connected to the middle position of the box door 2.

[0053] To improve the overall integrity of the second guide rail assembly 4 and enhance the ease of adjustment, based on the above embodiment, the extended guide rail assembly 42 further includes a connector 422. Three third guide rails 421 are arranged in parallel, and the connector 422 connects to the three third guide rails 421. Please refer to [reference needed]. Figure 1 and Figure 2 A connector 422 is installed on the back of the third guide rail 421 by welding or screws. The connector 422 can be a rod-shaped structure or a plate-shaped structure. The number of connectors 422 can be one or two, so that the second guide rail assembly 4 is a whole structure.

[0054] Based on the above embodiments, one of the connector 422 and the door 2 is provided with a locking tongue 5, and the other is provided with a locking assembly 6. When the locking tongue 5 collides with the locking assembly 6, the locking tongue 5 can be locked in the locking assembly 6, and the locking assembly 6 can unlock the locking tongue 5 so that the locking tongue 5 can be disengaged from the locking assembly 6.

[0055] Please refer to Figure 1A latch 5 is installed on the inner surface of the door 2, and a latch assembly 6 is installed on the front of the connector 422. Alternatively, the latch assembly 6 can be installed on the inner surface of the door 2, and the latch 5 can be installed on the front of the connector 422. In use, rotate the outer guide rail assembly 42 to bring it close to the inner guide rail assembly 41. During the process of adjusting the second guide rail assembly 4 to the folded state, the latch assembly 6 and the latch 5 collide, thereby locking the outer guide rail assembly 42 onto the inner guide rail assembly 41, so that the second guide rail assembly 4 remains in the folded state. When it is necessary to adjust the second guide rail assembly 4 to the unfolded state, press the switch of the latch assembly 6, and then rotate the outer guide rail assembly 42 away from the inner guide rail assembly 41.

[0056] It should be noted that there are no restrictions on the type of locking tongue 5 and locking assembly 6, as long as they can achieve the above functions.

[0057] like Figure 1 As shown, based on the above embodiment, the width of the third guide rail 421 is greater than the width of the second guide rail 411, and several third guide rails 421 can be fastened to the outer side of the corresponding second guide rail 411; then, after adjusting the second guide rail assembly 4 to a folded state, as shown... Figure 2 As shown, the upper third guide rail 421 is fastened to the outside of the upper second guide rail 411, the lower third guide rail 421 is fastened to the outside of the lower second guide rail 411, and the middle third guide rail 421 is fastened to the outside of the middle second guide rail 411.

[0058] Based on the above embodiment, the third guide rail 421 has a transition guide portion 423, and the inner sides of the third guide rail 421 that are close to each other have transition guide portions 423. There is a guide groove extending along the length direction of the third guide rail 421 between the two transition guide portions 423. The transition guide portion 423 includes a size gradient structure, so that the groove of the second guide rail 411 gradually transitions to the groove of the third guide rail 421 through the guide groove.

[0059] Please refer to Figure 3 The inner surface of the side wall of the third guide rail 421 is fixed with a trapezoidal protrusion as a transition guide 423. The transition guide 423 is located at the left end of the third guide rail 421 near the second guide rail 411 and extends along the length of the third guide rail 421. The left end of the transition guide 423 abuts against the second guide. The distance between the left ends of the two transition guides 423 is equal to or slightly less than the width of the guide groove of the second guide rail 411. The distance between the right ends of the two transition guides 423 is equal to or slightly greater than the width of the guide groove of the third guide rail 421. The transition guide 423 has a gradually changing size structure from its left end to its right end. In use, the sliding part that has slid away from the third guide rail 421 can slide back to the second guide relatively stably through the transition guide 423.

[0060] Based on the above embodiments, the third guide rail 421 has a first support portion 424, the door 2 has a second support portion 21, and when the second guide rail assembly 4 is in the unfolded state, the first support portion 424 abuts against the second support portion 21; and the first support portion 424 and / or the second support portion 21 have a buffer structure, and the first support portion 424 and the second support portion 21 can abut against each other through the buffer structure.

[0061] Please refer to Figure 2 A first support part 424 is fixed to the right end of the back of the third guide rail 421 by welding or bonding, and a second support part 21 is fixed to the right end of the door 2 by welding or bonding. When the outer guide rail assembly 42 is rotated away from the inner guide rail assembly 41, the first support part 424 and the second support part 21 are directly in contact after the second guide rail assembly 4 is adjusted to the unfolded state, so that the outer guide rail assembly 42 is stably supported on the door 2, thereby improving the stability of the battery sliding on the second guide rail assembly 4.

[0062] It should be noted that the types of the first support part 424 and the second support part 21 are not limited, as long as the first support part 424 can stably support the second support part 21 when the second guide rail assembly 4 is in the unfolded state. For example, the first support part 424 can be a frustum structure, a square column structure, or a wedge-shaped seat, etc., and the second support part 21 can be a rectangular block, a trapezoidal block, or a wedge-shaped seat, etc. It should also be noted that the number of the first support part 424 and the second support part 21 is not limited, as long as the extended guide rail assembly 42 can stably support the door 2 when the second guide rail assembly 4 is in the unfolded state. For example, in some specific embodiments, the number of the first support part 424 is two, and the number of the second support part 21 is... The first support part 424 is a block structure, and the second support part 21 is a long strip structure. The two first support parts 424 can be supported on the second support part 21 at the same time. Alternatively, in some other specific embodiments, there are three first support parts 424 and three second support parts 21. The three first support parts 424 and the three second support parts 21 are arranged along the width direction of the door 2, and the three first support parts 424 can be supported on the corresponding second support parts 21. That is, the upper first support part 424 is supported on the upper second support part 21, the lower first support part 424 is supported on the lower second support part 21, and the middle first support part 424 is supported on the middle second support part 21.

[0063] Furthermore, such as Figure 2 As shown, a buffer structure is bonded or vulcanized to the upper end of the first support part 424 and / or the upper surface of the second support part 21. The buffer structure can be a rubber pad or a plastic seat, etc., to prevent the extended guide rail assembly 42 from having a rigid collision with the box door 2.

[0064] Preferred, such as Figure 2 As shown, the buffer structure is fixed to the first support part 424, and the height of the first support part 424 and the buffer structure connected thereto is greater than the thickness of the connector 422, so as to prevent the battery from colliding with the extended guide rail assembly 42 after the door 2 is closed.

[0065] In addition to the aforementioned enclosure, this application also provides a battery box that includes a battery and the enclosure disclosed in the above embodiments. The structure of the other parts of the battery box is described in the prior art and will not be repeated here.

[0066] It should be noted that the type of sliding component at the bottom of the battery is not limited, as long as it can slide and cooperate with the first guide rail component 3 and the second guide rail component 4. For example, the sliding component can be a roller or a slider.

[0067] In addition to the aforementioned housing and battery box, this application also provides a rail vehicle including the battery box disclosed in the above embodiments. The structure of other parts of the rail vehicle is described in the prior art and will not be repeated here.

[0068] It should be noted that the relational terms such as "first" and "second" mentioned above are only used to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities; the terms "upper surface," "lower surface," "top," and "bottom" and the directional terms "upper," "lower," "left," and "right" mentioned above are defined based on the accompanying drawings in the specification.

[0069] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0070] The enclosure, battery box, and rail vehicle provided in this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the method and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of this application.

Claims

1. A battery box housing, characterized in that, include: The main body of the box (1) is a hollow box structure; A door (2) is provided on the box body (1) and can be opened and closed to close or open the box body (1). The first guide rail assembly (3) is installed on the housing body (1) and is used to slide to cooperate with the sliding assembly at the bottom of the battery. The second guide rail assembly (4) is installed on the door (2). When the door (2) is in the open state, the second guide rail assembly (4) is located on the side of the first guide rail assembly (3) and is used to slide in conjunction with the sliding assembly. The second guide rail assembly (4) is a folding structure. When the second guide rail assembly (4) is in the folded state, the second guide rail assembly (4) is retracted inside the door (2). When the second guide rail assembly (4) is in the unfolded state, the second guide rail assembly (4) extends outside the door (2). The sliding assembly can slide on the guide rail section of the second guide rail assembly (4) located outside the door (2) so that the entire battery can be pulled out from the body (1) of the enclosure.

2. The battery box housing according to claim 1, characterized in that, The second guide rail assembly (4) includes an inner guide rail assembly (41) and an outer guide rail assembly (42). The inner extension guide rail assembly (41) is fixed to the box door (2), and the inner extension guide rail assembly (41) is recessed within the box door (2). The outer guide rail assembly (42) is rotatably connected to the free end of the door (2). When the second guide rail assembly (4) is in a folded state, the outer guide rail assembly (42) is engaged with the inner guide rail assembly (41).

3. The battery box housing according to claim 2, characterized in that, The first guide rail assembly (3) includes three first guide rails (31), the inner extension guide rail assembly (41) includes three second guide rails (411), and the outer extension guide rail assembly (42) includes three third guide rails (421). The first guide rail (31) extends along the length direction of the box body (1), and three first guide rails (31) are arranged along the width direction of the box body (1). The second guide rail (411) extends along the length direction of the box door (2), and three second guide rails (411) are arranged along the width direction of the box door (2); The three third guide rails (421) are rotatably connected to the door (2) along its own width direction.

4. The battery box housing according to claim 3, characterized in that, The extended guide rail assembly (42) also includes a connector (422), and the three third guide rails (421) are arranged in parallel, with the connector (422) connected to the three third guide rails (421).

5. The battery box housing according to claim 4, characterized in that, One of the connector (422) and the door (2) is provided with a latch (5), and the other is provided with a latch assembly (6). When the latch (5) collides with the latch assembly (6), the latch (5) can be locked in the latch assembly (6), and the latch assembly (6) can unlock the latch (5) so that the latch (5) can be disengaged from the latch assembly (6).

6. The battery box housing according to claim 3, characterized in that, The width of the third guide rail (421) is greater than the width of the second guide rail (411), and several of the third guide rails (421) can be fastened to the outside of the corresponding second guide rail (411).

7. The battery box housing according to claim 6, characterized in that, The third guide rail (421) has a transition guide portion (423), and the inner side of the third guide rail (421) that is close to the opposite sidewall has the transition guide portion (423), and there is a guide groove extending along the length direction of the third guide rail (421) between the two transition guide portions (423). The transition guide (423) includes a size gradient structure, such that the groove of the second guide rail (411) gradually transitions to the groove of the third guide rail (421) through the guide groove.

8. The battery box housing according to claim 3, characterized in that, The third guide rail (421) has a first support part (424), and the box door (2) has a second support part (21). When the second guide rail assembly (4) is in the unfolded state, the first support part (424) abuts against the second support part (21). Furthermore, the first support portion (424) and / or the second support portion (21) have a buffer structure, and the first support portion (424) and the second support portion (21) can abut against each other through the buffer structure.

9. A battery box, comprising a battery, characterized in that, It also includes the housing as described in any one of claims 1-8 above.

10. A rail vehicle, characterized in that, Includes the battery box as described in claim 9.

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