A battery box

Abstract

The application discloses a battery box, comprising a bottom frame, a top frame, a middle frame, a battery pack, a water cooling unit, a cable and a high-voltage box. The bottom frame is provided with an electrical connector. The middle frame is located between the bottom frame and the top frame, and comprises a first wiring column, the first wiring column comprising a main body section and an inclined section located at both ends of the main body section, the main body section being located between the bottom frame and the top frame and extending along the arrangement direction of the bottom frame and the top frame, the inclined section at one end of the main body section extending to the top frame, and the inclined section at the other end of the main body section extending to the bottom frame. The battery pack is arranged in a battery mounting space. The water cooling unit and the high-voltage box are arranged on the top frame. At least part of the cable is connected to the first wiring column and electrically connected to the electrical connector and the high-voltage box, respectively, the cable extending along the first wiring column, and the arrangement of the bending section increasing the turning radius of the cable, avoiding damage to the cable due to bending, and prolonging the service life of the cable.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more particularly to a battery box. Background Technology

[0002] Mining trucks are off-road vehicles, and the size of the power battery in electric mining trucks is primarily limited by the overall vehicle space. Electric mining trucks require a large amount of power from their batteries. While battery swapping technology for heavy-duty trucks is available and has been mass-produced and mature, heavy-duty truck batteries are relatively small, their capacity is incompatible with those of box trucks, and their structural design is unsuitable for mining trucks, making direct application in mining truck vehicles impossible. Furthermore, although a small number of battery-swapping mining trucks are currently in use, actual operational needs have placed higher demands on product maintainability and size. Given the limited space within the mining truck, a rational design of the battery box structure is necessary to improve space utilization, while also fully considering production and after-sales issues.

[0003] Furthermore, within the battery box, some electrical devices are located at the top, and others at the bottom. These devices require cable connections. This necessitates cables extending along the height of the battery box to facilitate these connections. In related technologies, the middle section of the cable extends vertically, while the top and bottom ends require bending and turning within a very small space to connect to the corresponding electrical devices. This results in a small bending radius, severely impacting the cable's lifespan. Power cables, in particular, have a larger diameter than signal cables, making them more prone to bending and breakage. Utility Model Content

[0004] To address one of the aforementioned technical problems, this application provides a battery box.

[0005] The present invention adopts the following technical solution: A battery box, comprising: A bottom frame, on which an electrical connector is provided; A top frame is located on top of the bottom frame and is connected to the bottom frame, forming a battery mounting space between the top frame and the bottom frame; A middle frame is located between the bottom frame and the top frame. The middle frame includes a first wiring post, which includes a main body segment and inclined segments at both ends of the main body segment. The main body segment is located between the bottom frame and the top frame and extends along the arrangement direction of the bottom frame and the top frame. One inclined segment of the main body segment extends to the top frame, and the other inclined segment of the main body segment extends to the bottom frame. A battery pack, wherein the battery pack is disposed within the battery mounting space; A water-cooled unit is mounted on the top frame; A high-voltage box, which is disposed on the top frame; The cable, at least a portion of which is connected to the first wiring post, extends along the first wiring post, and is electrically connected to the electrical connector and the high-voltage box, respectively.

[0006] Optionally, the included angle between the main body segment and the inclined segment is 100° to 165°.

[0007] Optionally, the first wiring post is a one-piece molded part; The inclined sections are formed by bending at both ends of the first wiring post.

[0008] Optionally, a lower connecting seat is provided on the bottom frame, and an upper connecting seat is provided on the top frame; One of the inclined sections is fixed to the lower connecting seat by fasteners; The other inclined section is fixed to the upper connecting seat by fasteners.

[0009] Optionally, the cable is connected to the main body segment by a restraint member; The cable and the inclined section have a gap, or the cable is attached to the inclined section.

[0010] Optionally, the first wiring post has a web and wing plates disposed on both sides of the web, the wing plates and the web having an included angle; The web plate is provided with binding holes; The restraint is fitted onto the cable and fixed to the restraint hole.

[0011] Optionally, each of the battery packs is arranged sequentially along the length of the bottom frame; There are wiring gaps between some adjacent battery packs; The first wiring post is located within the wiring gap.

[0012] Optionally, the central frame further includes a second wiring post; The second wiring post is located in the wiring gap; The second wiring post and the first wiring post have a gap; The cables include power cables and signal cables, with the power cables extending along the first cable routing post and the signal cables extending along the second cable routing post.

[0013] Optionally, an electrical interface is provided at one end of each battery pack near the top frame; The electrical interface is electrically connected to the high-voltage box.

[0014] Optionally, the extension dimension of the top frame is not less than the extension dimension of the bottom frame along the height direction of the battery box.

[0015] By adopting the above technical solution, this application has the following beneficial effects: In this application, by setting inclined sections at both ends of the first cable routing post, it is beneficial to increase the bending radius of the cable at both ends of the first cable routing post, thus avoiding the problem of excessive bending of the cable, which would lead to kinking and affect its service life.

[0016] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments and descriptions of the present invention are used to explain the present invention, but do not constitute an undue limitation of the present invention. Obviously, the drawings described below are merely some embodiments; those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings: Figure 1 This diagram shows the external structure of the battery box provided in an embodiment of this application. Figure 2 This diagram shows the state of the hidden outer panel of the battery box provided in an embodiment of this application. Figure 3 A side view of the battery box concealing the battery pack and outer panel provided in an embodiment of this application is shown; Figure 4 Show Figure 3 Enlarged view of section A in the middle; Figure 5 This is a perspective view of the battery box concealing the battery pack and outer panel provided in an embodiment of this application; Figure 6 Show Figure 5 Enlarged view of section B in the middle; Figure 7 Show Figure 5 Enlarged view of section C; Figure 8 This is a perspective view of the battery frame of the battery box provided in an embodiment of this application; Figure 9 Show Figure 8 Enlarged view of section D; Figure 10 Show Figure 8 Enlarged view of section E in the middle; Figure 11 This is a top view of the battery box provided in an embodiment of this application.

[0018] In the diagram: 1. Battery frame; 11. Top frame; 111. Lifting support beam; 112. Upper connecting seat; 12. Bottom frame; 121. Charging seat; 122. Lower connecting seat; 13. Middle frame; 131. First wiring post; 1311. Main body section; 1312. Inclined section; 132. Second wiring post; 2. Battery pack; 21. Water cooling interface; 3. Water cooling unit; 31. Air outlet; 32. Air inlet; 4. High voltage box; 5. Electrical connector; 6. Water bottle; 7. Wiring gap; 8. Power supply cable; 10. Outer panel; 110. Lifting guide cavity; a. Fasteners.

[0019] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0021] In the description of this utility model, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0023] Example 1 like Figures 1 to 11As shown, this embodiment provides a battery box, including a battery frame 1, a battery pack 2, a water-cooled unit 3, cables, and a high-voltage box 4. The battery frame 1 includes a bottom frame 12, a top frame 11, and a middle frame 13. An electrical connector 5 is provided on the bottom frame 12. The top frame 11 is located on top of the bottom frame 12 and is connected to the bottom frame 12, forming a battery mounting space between the top frame 11 and the bottom frame 12. A middle frame 13 is located between the bottom frame 12 and the top frame 11. The middle frame 13 includes a first cable routing post 131, which includes a main body 1311 and inclined sections 1312 at both ends of the main body 1311. The main body 1311 extends along the arrangement direction of the bottom frame 12 and the top frame 11, i.e., along the height direction of the battery box. One inclined section 1312 of the main body 1311 extends to the top frame 11, and the other inclined section 1312 extends to the bottom frame 12. The battery pack 2 is disposed within the battery mounting space. The water-cooled unit 3 is disposed on the top frame 11. The high-voltage box 4 is disposed on the top frame 11. At least a portion of the cables are connected to the first cable routing post 131, extend along the first cable routing post 131, and are electrically connected to the electrical connector 5 and the high-voltage box 4, respectively.

[0024] In this application, by setting inclined sections 1312 at both ends of the first cable routing post 131, it is beneficial to increase the bending radius of the cable at both ends of the first cable routing post 131, thereby avoiding the problem of excessive bending of the cable, which would lead to kinking and affect its service life.

[0025] The battery box of this application places both the water-cooled unit 3 and the high-voltage box 4 on the top of the battery box, making full use of the top space of the battery frame and facilitating actual production and subsequent after-sales maintenance.

[0026] In some possible implementations, the included angle between the main body segment 1311 and the inclined segment 1312 is 100° to 165°. This provides the cable with more space for bending and turning, avoiding excessive bending that could cause kinking and extending the cable's lifespan.

[0027] In some possible implementations, the first wiring post 131 is a one-piece molded part, and the two ends of the first wiring post 131 are bent to form the inclined section 1312.

[0028] The first cable routing post 131 can be bent using a conventional sheet metal bending machine to form two inclined sections 1312, which is a simple processing method with high production efficiency. By processing inclined sections 1312 at both ends of the first cable routing post 131, the problem of excessive cable bending, which leads to kinking and affects service life is effectively avoided.

[0029] In some possible implementations, the cable is connected to the main body segment 1311 by a restraint, with a gap between the cable and the inclined segment 1312, or the cable is attached to the inclined segment 1312. The cable may not be connected to the inclined segment 1312, nor does it need to be attached to it; the inclined segment 1312 simply serves to avoid the cable and not interfere with its bending and extension. Restraints can be provided at both ends of the main body segment 1311 to restrain the cable, while no restraints are needed on the inclined segment 1312. Of course, restraints can also be provided on the inclined segment 1312 to restrain the cable, depending on the actual situation.

[0030] In some possible implementations, the first cable guide post 131 has a web and wing plates disposed on both sides of the web, the wing plates and the web having an included angle, and a binding hole provided on the web. The binding member is sleeved on the cable and fixed to the binding hole. The first cable guide post 131 can be a channel steel, which has high structural strength, is not easily bent, and can provide good support. The binding member can be a flexible strip that can be bent and sleeved on the cable, with both ends connected to the binding hole.

[0031] Example 2 like Figures 1 to 11 As shown in the illustration, this embodiment provides a more detailed description of the battery box, which includes: a bottom frame 12, a top frame 11, a battery pack 2, a water-cooled unit 3, and a high-voltage box 4. An electrical connector 5 is provided on the bottom frame 12. The top frame 11 is located on top of the bottom frame 12 and is connected to the bottom frame 12, forming a battery mounting space between the top frame 11 and the bottom frame 12. The battery pack 2 is disposed within the battery mounting space. The water-cooled unit 3 is disposed on the top frame 11. The high-voltage box 4 is disposed on the top frame 11.

[0032] The battery box of this application places both the water-cooled unit 3 and the high-voltage box 4 on the top of the battery box, making full use of the top space of the battery frame 1, and is beneficial to actual production and subsequent after-sales maintenance.

[0033] In some possible implementations, the top frame 11 has an upper bottom frame and an upper peripheral side frame located around the edge of the upper bottom frame, forming a top cavity between the upper bottom frame and the upper peripheral side frame, and the high-pressure box 4 and the water-cooled unit 3 are both disposed in the top cavity.

[0034] The upper peripheral frame of the top frame 11 includes a lifting and matching beam 111, which is used to cooperate with the battery swapping equipment to perform battery swapping tasks. During battery swapping, the grabber of the battery swapping equipment can grab the lifting and matching beam 111 on the top of the battery box, facilitating the lifting, lowering, or horizontal movement of the battery box to change its position. In this application, the high-voltage box 4 and the water-cooled unit 3 are both embedded in the top cavity inside the top frame 11, and their tops do not protrude from the top cavity, making it less likely to interfere with other structures on the mining truck. This fully utilizes the top space of the battery frame 1, facilitating the assembly of the high-voltage box 4 and the water-cooled unit 3, which is convenient for both actual production and maintenance, i.e., convenient for subsequent after-sales maintenance.

[0035] In some possible implementations, the high-pressure box 4 is located at the middle of the top cavity along the length direction, and water-cooled units 3 are respectively arranged on both sides of the high-pressure box 4 in the top cavity.

[0036] In some possible implementations, the battery box includes two water-cooling units 3 and multiple battery packs 2, with each battery pack 2 arranged sequentially at intervals along the length of the bottom frame 12. Some of the battery packs 2 are connected to one water-cooling unit 3, and some are connected to the other water-cooling unit 3. In this application, each battery pack 2 contains a large number of battery modules and cooling plates, and a single water-cooling unit 3 would place a heavy load on it. This application uses two water-cooling units 3, allowing each unit to control the temperature of a portion of the battery pack 2, resulting in a more rational structural design.

[0037] In some possible implementations, such as Figure 11 As shown, a water-cooling interface 21 is provided at one end of the top frame 11 of the battery pack 2. The water-cooling interface 21 is exposed on the top frame 11, and the water-cooling pipes of the water-cooling unit 3 are connected to the water-cooling interface 21. The water-cooling interface 21 is provided on the top surface of the battery pack 2, and the water-cooling unit 3 only covers part of the top wall of the battery pack 2, so the water-cooling interface 21 is exposed, which facilitates the connection of water-cooling pipes between the water-cooling unit 3 and the battery pack 2.

[0038] In some possible implementations, each battery pack 2 has an electrical interface at one end near the top frame 11, which is electrically connected to the high-voltage box 4. The electrical interface is located at the top of the battery pack 2, facilitating wiring to the high-voltage box.

[0039] In some possible implementations, in each of the battery packs 2, the two battery packs 2 located at both ends respectively form a wiring gap 7 with the adjacent battery pack 2, and the cable extending along the height direction of the battery frame 1 is at least partially located in the wiring gap 7, wherein the cable includes a cable connecting the electrical connector 5 and / or the charging base 121.

[0040] The battery box includes a middle frame 13 located between the bottom frame 12 and the top frame 11. The middle frame 13 connects the bottom frame 12 and the top frame 11. The middle frame 13 includes cable routing posts located in the cable routing gaps 7 and connected to the top frame 11 and the bottom frame 12 at both ends. Cables extend along the cable routing posts. In addition to guiding cables, the cable routing posts also connect the top frame 11 and the bottom frame 12 to enhance the structural strength of the battery frame 1.

[0041] like Figure 2 and Figure 5 As shown, charging bases 121 are respectively provided at both ends of the bottom frame 12 along its length, and the charging bases 121 are electrically connected to the high-voltage box 4. The charging bases 121 are connected to the high-voltage box 4 via cables. The charging bases 121 are used to plug in an external charging gun to charge the internal battery pack 2.

[0042] In some possible implementations, each of the wiring posts includes a first wiring post 131 and a second wiring post 132. The first wiring post 131 and the second wiring post 132 are arranged sequentially along the thickness direction (or width direction) of the battery frame 1. The power supply cable 8 extends along the first wiring post 131, and the signal cable extends along the second wiring post 132. The first wiring post 131 and the second wiring post 132 are both arranged sequentially along the direction perpendicular to the arrangement of each battery pack 2, that is, along the extension direction of the wiring gap 7, making full use of the wiring gap 7 between adjacent battery packs 2.

[0043] In some possible implementations, the second wiring post 132 is located at the opening of the wiring gap 7, and the first wiring post 131 is located inside the wiring gap 7, with a gap between the first wiring post 131 and the opening of the wiring gap 7. The second wiring post 132 is directly exposed at the opening, while the first wiring post 131 is positioned relatively inward, improving security.

[0044] In some possible implementations, the first cable routing post 131 includes a main body segment 1311 and inclined segments 1312 located at both ends of the main body segment 1311. The main body segment 1311 extends along the height direction of the battery frame 1. The inclined segments 1312 at the top of the main body segment 1311 extend inclined towards the top side of the battery frame 1, and the inclined segments 1312 at the bottom of the main body segment 1311 extend inclined towards the top side of the battery frame 1. The included angle between the inclined segments 1312 and the main body segment 1311 is an obtuse angle. By setting inclined segments 1312 at both ends of the first cable routing post 131, it is beneficial to increase the bending radius of the power supply cable 8 at both ends of the first cable routing post 131, avoiding excessive bending of the cable, which could lead to kinking and affect its service life.

[0045] Two first cable routing posts 131 and two second cable routing posts 132 can be installed in the cable routing gap 7 between two adjacent battery packs 2. The two second cable routing posts 132 are located on both sides of the bottom frame 12 along the width direction and are close to the gap openings on both sides of the cable routing gap 7. The two first cable routing posts 131 are located between the two second cable routing posts 132. Each cable routing post is used to arrange cables. The two first cable routing posts 131 are symmetrically arranged. The inclined sections 1312 at the top of the two first cable routing posts 131 are inclined towards each other, and the inclined sections 1312 at the bottom of the two first cable routing posts 131 are inclined towards each other.

[0046] like Figures 3 to 6 as well as Figure 9 As shown, a lower connecting seat 122 is provided on the bottom frame 12. The lower connecting seat 122 is welded to the bottom frame 12 or fixed to the bottom frame 12 by fasteners a. The lower connecting seat 122 protrudes from the bottom frame 12. The inclined section 1312 at the bottom of the first wiring post 131 extends to one side of the lower connecting seat 122 and is connected to the lower connecting seat 122 by fasteners a, such as bolts. Similarly, combined with Figures 8 to 10 As shown, an upper connecting seat 112 is provided on the top frame 11. The upper connecting seat 112 is welded to the top frame 11 or fixed to the top frame 11 by fasteners a. The upper connecting seat 112 protrudes downward from the bottom frame 12. The inclined section 1312 at the top of the first cable routing post 131 extends to one side of the upper connecting seat 112 and is connected to the upper connecting seat 112 by fasteners a, such as bolts. That is, the inclined section 1312 at the top of the first cable routing post 131 extends inclinedly to the lower edge of the top frame 11 and is fixed to the top frame 11, and the inclined section 1312 at the bottom of the first cable routing post 131 extends inclinedly to the upper edge of the bottom frame 12 and is fixed to the bottom frame 12. The first cable routing post 131 serves to connect the top frame 11 and the bottom frame 12, enhancing the structural strength of both.

[0047] In some possible implementations, the extension dimension of the top frame 11 along the height direction of the battery box is not less than the extension dimension of the bottom frame 12. In this application, the water-cooled unit 3 and the high-voltage box 4, which were originally set on the bottom frame 12, are both set on the top frame 11, so that the bottom frame 12 only has a smaller electrical connector 5 and a charging socket 121, thereby reducing the height dimension of the bottom frame 12, while the top frame 11 can remain at its original size, thus significantly reducing the height dimension of the battery box and making full use of the internal space of the battery frame 1.

[0048] At the bottom of the battery frame 11, such as the bottom frame 12, a locking engagement part is provided. When the battery box is placed on the battery base on the mining truck, the locking tongue of the locking mechanism on the battery base can press against the locking engagement part to fix the battery box. A bottom beam is provided at the bottom of the battery frame 1, and the locking engagement part can be a gasket provided on the bottom beam. The gasket has high structural strength, good wear resistance, and is detachable for easy engagement with the locking mechanism.

[0049] Combination Figure 2 As shown, the battery box provided in this embodiment may include four 200-degree three-dimensional battery packs 2, forming an 800-degree battery swapping system. Eight locking points (locking mating parts) are provided at the bottom of the battery box. These eight locking points can be pressed and fixed by the eight locking tongues of the locking mechanism, improving the reliability of the battery box's fixation.

[0050] Four battery packs are arranged in two rows in the middle of the battery box. The top frame 11 and bottom frame 12 are directly connected to the battery packs 2, forming the main structure of the battery box. The high-voltage box 4 is arranged on the top frame 11. To improve the system space utilization, the two high-power water-cooled units 3 required by the battery box are arranged on both sides of the high-voltage box 4. The main cables and water pipes of the system are arranged on the top of the battery box. This design can make full use of the top space while meeting the battery swapping requirements, and is beneficial to actual production and subsequent after-sales maintenance. The electrical connector 5 is arranged on the bottom frame 12, and the charging base 121 of the battery box is arranged on the bottom frame 12. Considering the potential risk of falling rocks in the mining scenario, an anti-smashing cover can be arranged on the top of the battery box. The anti-smashing cover can connect the water-cooled unit 3 and the high-voltage box 4 on the top frame 11 that cover the bottom. The anti-smashing cover has a beveled edge structure, which reduces the height while meeting the strength performance requirements.

[0051] Example 3 like Figures 1 to 11 As shown in the illustration, this embodiment provides a detailed description of the battery box, which includes: a battery frame 1, a battery pack 2, a water-cooling unit 3, a high-voltage box 4, and an electrical connector 5. Each battery pack 2 is disposed within the battery frame 1. The water-cooling unit 3 is disposed within the battery frame 1 and located at the top of each battery pack 2, and is connected to each battery pack 2. The high-voltage box 4 is disposed within the battery frame 1 and located at the top of each battery pack 2, and is electrically connected to both the battery pack 2 and the water-cooling unit 3. The electrical connector 5 is disposed within the battery frame 1 and located at the bottom of each battery pack 2, and is electrically connected to the high-voltage box 4.

[0052] The top of the battery box has a lifting beam 111 for use with the battery swapping equipment to perform battery swapping tasks. During battery swapping, the grabber of the battery swapping equipment can grab the lifting beam 111 on the top of the battery box, facilitating the lifting, lowering, or horizontal movement of the battery box to change its position. In this application, both the water-cooled unit 3 and the high-voltage box 4 are located on the top of the battery box, making full use of the top space of the battery frame 1. This facilitates the assembly of the high-voltage box 4 and the water-cooled unit 3, which is convenient for both actual production and maintenance, and thus facilitates subsequent after-sales maintenance.

[0053] In some possible implementations, the battery box includes an outer panel 10 connected to the battery frame 1. The outer panel 10 encloses a lifting guide cavity 110 and an inner cavity. The lifting guide cavity 110 is exposed on the outer panel 10, meaning its opening is visible from the surface of the outer panel 10. A lifting mating beam 111 has a lifting mating portion exposed in the lifting guide cavity 110, meaning it is clearly visible within the lifting guide cavity 110. The lifting mating portion may be located inside the lifting guide cavity 110 or along its edge, forming part of its boundary surface. Alternatively, although the lifting mating portion is spaced from the lifting guide cavity 110, there is no direct obstruction between them. Each of the battery packs 2, high-voltage box 4, and water-cooled unit 3 is located within the inner cavity, and the lifting guide cavity 110 is isolated from the inner cavity.

[0054] In this implementation scheme, the outer plate 10 can be a skin covering the battery frame 1, serving to enclose the battery frame 1 and protect the internal battery pack 2. The outer plate 10 isolates the battery pack 2 from the lifting assembly, ensuring that when the grabber of the battery swapping equipment grabs the lifting assembly, it will not come into contact with the individual battery packs 2, water-cooled unit 3, and high-voltage box 4 inside the battery box, thus improving safety. The lifting guide cavity 110 is provided to guide the grabber, facilitating its smooth attachment to the lifting assembly.

[0055] In some possible implementations, such as Figure 1As shown, the outer plate 10 has a flat plate portion and a recessed isolation plate frame. The flat plate portion fits against the outer side of the battery frame 1 to form a flat outer surface of the battery box. The isolation plate frame is connected to the flat plate portion and is recessed into the clearance space, forming the lifting guide cavity 110. The lifting guide cavity 110 is a generally L-shaped guide channel with an opening at the top of the battery box and an opening at the side of the battery box. The lifting mating part can be located on the inner wall of the guide channel or constitute a portion of the inner wall of the guide channel. The guide channel can guide the grabber to slide in and attach to the lifting mating part. The lifting mating part is located at the top of the bending transition area of ​​the L-shaped guide channel. The lifting mating part can be a wear-resistant plate, such as a steel plate, welded or fixed to the lower surface of the lifting mating beam 111 by fasteners.

[0056] In some possible implementations, such as Figure 2 As shown, the battery box includes two water-cooled units 3, both of which are mounted on the battery frame 1 and are located on opposite sides of the high-voltage box 4.

[0057] In this implementation scheme, the battery box contains multiple water-cooled plates, allowing for the installation of two water-cooling units 3 to improve cooling efficiency. Both water-cooling units 3 are located on the top of the battery box for easy maintenance and assembly. The two water-cooling units 3 are symmetrically positioned on either side of the high-voltage box 4, contributing to overall structural balance. The high-voltage box 4, located between the two water-cooling units 3, allows for convenient wiring to both units.

[0058] In this embodiment, the high-voltage box 4 is arranged on top of the battery frame 1. To improve system space utilization, two high-power water-cooled units 3 required for system thermal management are also located on top of the battery frame 1, on either side of the high-voltage box 4. Within the battery box, the main system cables and water pipes are all arranged at the top. This structural design fully utilizes the top space while meeting battery swapping requirements, and is beneficial for actual production and subsequent after-sales maintenance.

[0059] In some possible implementations, such as Figure 2 As shown, the water-cooled unit 3 has an air outlet 31, which is located on the side of the water-cooled unit 3 away from the high-voltage box 4. The air outlets 31 of the two water-cooled units 3 are located at both ends of the battery box along its length, and both air outlets 31 are located on the side of the casing of the water-cooled unit 3 away from the high-voltage box 4, to prevent the hot air discharged from the air outlets 31 from blowing directly onto the high-voltage box 4, causing the high-voltage box 4 to overheat.

[0060] In some possible implementations, the water-cooled unit 3 and the high-voltage box 4 are arranged sequentially along the length of the battery frame 1, and the water-cooled unit 3 has air inlets 32 on one or both sides along the width of the battery frame 1. Preferably, the side of the water-cooled unit facing the high-voltage box can also have an air inlet 32. By providing multiple air inlets 32, the air intake of the water-cooled unit 3 can be increased, which is beneficial to improving the heat exchange efficiency between the water-cooled unit 3 and the outside air.

[0061] In some possible implementations, such as Figure 1 and Figure 11 As shown, the battery box includes a water tank 6, which is located on top of the battery frame 1 and situated on one side of the high-voltage box 4 along the width of the battery frame 1. The water tank 6 is connected to the water-cooling pipes of the water-cooling unit 3 and is used to add coolant to the water-cooling pipes. The water tank 6 is positioned between the two water-cooling units 3 and on one side of the high-voltage box 4, making full use of the top space of the battery frame 1.

[0062] In some possible implementations, such as Figure 2 As shown, each of the battery packs 2 is arranged sequentially along the length direction of the battery frame 1. There is a wiring gap 7 between some adjacent battery packs 2. The cables extending along the height direction of the battery frame 1 are at least partially located in the wiring gap 7. The cables include cables connecting the electrical connector 5 and / or the charging base 121.

[0063] Cables extending along the height of the battery box are located within the wiring gap 7, avoiding routing on the surface of the battery frame 1, thus keeping the surface of the battery frame 1 neat and orderly. The cable arrangement is neat and orderly. The battery packs on both sides of the wiring gap 7 provide protection for the cables inside.

[0064] In some possible implementations, such as Figure 2 As shown, charging sockets 121 are respectively provided at both ends of the bottom of the battery frame 1 along its length, and the charging sockets 121 are electrically connected to the high-voltage box 4. The charging sockets 121 are connected to the high-voltage box 4 via cables. The charging sockets 121 are used to plug in an external charging gun to charge the internal battery pack 2.

[0065] In some possible implementations, the battery frame 1 includes several wiring posts extending along the height of the battery frame 1. These posts are located within the wiring gaps 7. The cables include power cables 8 and signal cables, which extend along different wiring posts. The power cables 8 carry a large current, which can easily interfere with the signal transmission of the signal cables. In this embodiment, multiple wiring posts are provided to separate the power cables 8 and signal cables, avoiding mutual interference.

[0066] The cable between the electrical connector 5 and the high-voltage box 4 at the top includes a power supply cable 8 and a signal cable. Similarly, the cable between the charging dock 121 and the high-voltage box 4 at the top also includes a power supply cable 8 and a signal cable.

[0067] In some possible implementation schemes, combined Figures 3 to 7 As shown, each of the wiring posts includes a first wiring post 131 and a second wiring post 132. The first wiring post 131 and the second wiring post 132 are arranged sequentially along the thickness direction (or width direction) of the battery frame 1. The power supply cable 8 extends along the first wiring post 131, and the signal cable extends along the second wiring post 132. The first wiring post 131 and the second wiring post 132 are both arranged sequentially along the direction perpendicular to the arrangement of each battery pack 2, that is, along the extension direction of the wiring gap 7, making full use of the wiring gap 7 between adjacent battery packs 2.

[0068] In some possible implementations, the second wiring post 132 is located at the opening of the wiring gap 7, and the first wiring post 131 is located inside the wiring gap 7, with a gap between the first wiring post 131 and the opening of the wiring gap 7. The second wiring post 132 is directly exposed at the opening, while the first wiring post 131 is relatively inwardly positioned, allowing the power supply cable to be routed inwards, thus improving safety.

[0069] In some possible implementations, such as Figure 3 As shown, the first cable routing post 131 includes a main body section 1311 and inclined sections 1312 located at both ends of the main body section 1311. The main body section 1311 extends along the height direction of the battery frame 1. The inclined sections 1312 at the top of the main body section 1311 extend inclined towards the top side of the battery frame 1, and the inclined sections 1312 at the bottom of the main body section 1311 extend inclined towards the top side of the battery frame 1. The angle between the inclined sections 1312 and the main body section 1311 is an obtuse angle. By setting inclined sections 1312 at both ends of the first cable routing post 131, it is beneficial to increase the bending radius of the power supply cable 8 at both ends of the first cable routing post 131, avoiding excessive bending of the cable, which could lead to kinking and affect its service life.

[0070] After extending along the first cable guide post 131 to the top, the power supply cable 8 can be bent and turned before connecting to corresponding electrical components, such as the high-voltage box 4, the charging base 121, and the electrical connector 5. If the first cable guide post 131 is a vertical rod, and its two ends are close to or extend to the plane where the high-voltage box 4 and the electrical connector 5 are located, then the power supply cable 8 needs to bend and turn in a very small space after extending to the end of the first cable guide post 131, resulting in a small bending radius and seriously affecting the service life of the cable. In particular, the power supply cable 8 has a larger diameter than the signal cable, making it more prone to bending and breakage. In this application, inclined sections 1312 are respectively provided at both ends of the main body section 1311 of the first cable routing post 131. The power supply cable 8 is at least connected to the main body section 1311, such as by cable ties or other binding members. The part of the power supply cable 8 extending out of the main body section 1311 can extend along the inclined section 1312, that is, it can be connected to the inclined section 1312 by a cable tie. The inclined section 1312 and the main body section 1311 form an obtuse angle, such as close to 145°, so as not to cause excessive bending of the power supply cable 8. The part of the power supply cable 8 extending out of the main body section 1311 can also not extend along the inclined section 1312, but extend directly to the corresponding electrical component and not contact the inclined section 1312. In this case, the inclined section 1312 mainly serves to avoid the cable.

[0071] It is important to note that the height direction of the battery frame / battery box mentioned in this application is... Figure 2 The width direction of the battery frame / battery box is as shown by the arrow in the middle H direction. Figure 2 The length direction of the battery frame / battery box is as shown by the W-shaped arrow. Figure 2 The direction indicated by the arrow is L.

[0072] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present utility model. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present utility model without departing from the scope of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A battery box, characterized in that, include: A bottom frame, on which an electrical connector is provided; A top frame is located on top of the bottom frame and is connected to the bottom frame, forming a battery mounting space between the top frame and the bottom frame; A middle frame is located between the bottom frame and the top frame. The middle frame includes a first wiring post, which includes a main body segment and inclined segments at both ends of the main body segment. The main body segment is located between the bottom frame and the top frame and extends along the arrangement direction of the bottom frame and the top frame. One inclined segment of the main body segment extends to the top frame, and the other inclined segment of the main body segment extends to the bottom frame. A battery pack, wherein the battery pack is disposed within the battery mounting space; A water-cooled unit is mounted on the top frame; A high-voltage box, which is disposed on the top frame; The cable, at least a portion of which is connected to the first wiring post, extends along the first wiring post, and is electrically connected to the electrical connector and the high-voltage box, respectively.

2. The battery box according to claim 1, characterized in that, The angle between the main body segment and the inclined segment is 100° to 165°.

3. The battery box according to claim 1, characterized in that, The first wiring post is a one-piece molded part; The inclined sections are formed by bending at both ends of the first wiring post.

4. The battery box according to claim 1, characterized in that, A lower connecting seat is provided on the bottom frame, and an upper connecting seat is provided on the top frame; One of the inclined sections is fixed to the lower connecting seat by fasteners; The other inclined section is fixed to the upper connecting seat by fasteners.

5. The battery box according to claim 1, characterized in that, The cable is connected to the main body section by a fastener; The cable and the inclined section have a gap, or the cable is attached to the inclined section.

6. The battery box according to claim 5, characterized in that, The first wiring post has a web and wing plates disposed on both sides of the web, and the wing plates and the web have an included angle; The web plate is provided with binding holes; The restraint is fitted onto the cable and fixed to the restraint hole.

7. The battery box according to claim 1, characterized in that, Each of the battery packs is arranged sequentially along the length of the bottom frame; There are wiring gaps between some adjacent battery packs; The first wiring post is located within the wiring gap.

8. The battery box according to claim 7, characterized in that, The central frame also includes a second wiring post; The second wiring post is located in the wiring gap; The second wiring post and the first wiring post have a gap; The cables include power cables and signal cables, with the power cables extending along the first cable routing post and the signal cables extending along the second cable routing post.

9. The battery box according to claim 1, characterized in that, Each of the battery packs has an electrical interface at one end near the top frame; The electrical interface is electrically connected to the high-voltage box.

10. The battery box according to any one of claims 1-9, characterized in that, Along the height direction of the battery compartment, the extension dimension of the top frame is not less than the extension dimension of the bottom frame.

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