Battery box body, battery pack and electrical apparatus

Abstract

A battery box body, comprising a battery pallet frame (1); a box body main body (2), wherein the box body main body (2) is provided with a box body outer frame body (21) and a box body supporting beam (22), a battery compartment (23) is arranged in the box body outer frame body (21), the box body outer frame body (21) and / or the box body supporting beam (22) is provided with an anti-falling sliding slot (24), and the box body supporting beam (22) is fixedly connected to the box body outer frame body (21); a sliding piece disassembling and assembling member (3), wherein the sliding piece disassembling and assembling member (3) is arranged in the anti-falling sliding slot (24) in a sliding mode, and an anti-falling buckle part (31) of the sliding piece disassembling and assembling member (3) can restrain and fix the battery pallet frame (1) on the box body outer frame body (21) and the box body supporting beam (22).

Description

Battery box, battery pack and power-consuming device

[0001] This application claims priority to the Chinese patent applications filed with the China Patent Office on December 22, 2023, with application number 2023235289897 and the Chinese patent application filed with the China Patent Office on December 22, 2023, with application number 2023117879852, the entire contents of the above applications are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of batteries, and in particular to a battery box, a battery pack and an electrical device. Background Art

[0003] A battery pack is a complete unit assembled from multiple battery modules, used to store and deliver electrical energy. It is a higher-level component in a battery system, typically consisting of one or more battery modules, connectors, a battery management system, cooling system, electrical interfaces, and a housing. Battery packs are widely used in vehicles such as electric vehicles and hybrid electric vehicles. As a key component of electric energy systems, they provide a higher level of energy storage and management to meet the needs of diverse applications. Technical issues

[0004] The battery modules inside a battery pack are typically secured with bolts. However, because electric and hybrid vehicles are subject to long periods of vibration and bumpy driving, and the battery modules are heavy, the bolts are subject to significant torque. Furthermore, the bolts are rigidly connected to the battery modules and battery housing using relatively small rivet nuts, resulting in reduced torque and stress concentration due to the small contact area. Consequently, there is a risk of thread failure, such as loosening or breaking, which can lead to loosening or even damage to the battery modules. Furthermore, loose bolts can easily come into contact with live components, causing battery short circuits and fires.

[0005] In addition, when the battery cells in the battery module experience thermal runaway, the pressure relief chamber in the battery case instantly generates strong air pressure, causing the battery module to be pushed upward. At the same time, the bolts connecting the battery module and the battery case are easily pulled out or the rivet nuts are pulled out. The flame generated by the thermal runaway will easily flow from between the tray and the crossbeam into the cavity inside the battery pack, and burn violently after coming into contact with a large amount of oxygen, thereby damaging internal components and even burning the battery pack. Technical Solutions

[0006] In a first aspect, the present application provides a battery box, comprising:

[0007] Battery tray rack;

[0008] A box body, the box body comprising an outer frame and a box support beam, a battery compartment being provided inside the outer frame, an anti-slip groove being provided on a side of the outer frame and / or the box support beam facing the battery compartment, and the box support beam being fixedly connected to the outer frame;

[0009] The slider detachable member is slidably arranged in the anti-slip groove, and the anti-slip buckle portion of the slider detachable member can constrain and fix the battery tray rack on the outer frame of the box and the box support beam.

[0010] In a second aspect, the present application provides a battery pack, comprising:

[0011] The battery box mentioned above;

[0012] A battery module is mounted and fixed on a battery tray rack of the battery box.

[0013] In some embodiments of the present application, the battery module includes a module positioning frame and one or more evenly arranged battery cells, each of the battery cells is plugged into the module positioning frame, and each of the battery cells can heat exchange with the pressure relief channel of the battery box.

[0014] In a third aspect, the present application provides an electrical device comprising the above-mentioned battery pack. Beneficial effects

[0015] By cleverly utilizing the slider detachable parts and the anti-slip grooves of the box body, the battery tray rack can be securely fixed to the box body, replacing the bolt-locking method used in existing battery packs. This avoids the problem of thread failure of the bolts in existing battery packs, which can lead to loose battery modules and battery short circuits and fires, ensuring the safety and stability of the battery pack. At the same time, the box body no longer requires machining holes and rivet nuts, simplifying the processing of the battery box and battery pack, and improving the convenience and efficiency of battery box and battery pack processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] FIG1 is a first partial assembly diagram of a battery box of the present application;

[0017] FIG2 is a second partial assembly diagram of a battery box of the present application;

[0018] FIG3 is a schematic structural diagram of a battery tray rack in a battery box of the present application;

[0019] FIG4 is a cross-sectional structural diagram of a box support beam in a battery box of the present application;

[0020] FIG5 is a first structural diagram of a slider detachable member in a battery box of the present application;

[0021] FIG6 is a second structural diagram of a slider detachable member in a battery box of the present application;

[0022] FIG7 is a third structural diagram of a slider detachable member in a battery box of the present application;

[0023] FIG8 is an overall assembly diagram of a battery pack using the battery box of the present application;

[0024] FIG9 is a partial assembly diagram of a battery pack using the battery box of the present application.

[0025] Icons: 1-battery tray rack, 11-tray body, 12-tray inner cavity, 13-tray support part, 14-heat dissipation and pressure relief hole, 15-positioning and anti-slip groove, 2-box body, 21-box outer frame, 211-outer horizontal frame, 212-outer vertical frame, 22-box support beam, 23-battery compartment, 24-anti-slip slide groove, 241-extension groove cavity, 25-weight reduction cavity, 26-buffer embedding groove, 27-guide rib, 28-disassembly and assembly station, 3-slider disassembly part, 31-anti-slip buckle part, 32-slider body, 33-extension buckle part, 34-guide notch, 4-battery cell, 5-module positioning frame, 6-elastic buffer part. Modes for Carrying Out the Invention

[0026] Specifically, please refer to Figures 8 and 9. The present application discloses a battery pack, including a battery case and a battery module, wherein the battery module includes one or more battery cells 4. In some embodiments, the battery cell 4 is a cylindrical battery, and each battery cell 4 has a positive terminal surface, a negative terminal surface, and a battery peripheral side surface in the form of an arc surface, and the positive terminal surface and the negative terminal surface are arranged on two opposite sides of the battery peripheral side surface. The direction from the negative terminal surface to the positive terminal surface is defined as the height direction of the battery cell 4, and one or more battery cells 4 are evenly arranged, and one or more battery cells 4 are connected in series and parallel. The even arrangement here means that the negative terminal surfaces of one or more battery cells 4 are all in the same plane, and the height direction of each battery cell 4 remains consistent.

[0027] In order to ensure that the assembly of one or more battery cells 4 is more stable and compact, the battery module also includes a module positioning frame 5, on which one or more assembly stations are arranged. Each assembly station is arranged corresponding to each battery cell 4, and the shape and size of the assembly station are adapted to the shape and size of the battery cell 4, so that each battery cell 4 is inserted into the corresponding assembly station of the module positioning frame 5.

[0028] Specifically, referring to Figures 3 and 9 , the battery case includes a battery tray rack 1 having a tray body 11, within which a tray cavity 12 is disposed. The battery module is mounted and fixed in the tray cavity 12 of the battery tray rack 1. In some embodiments, the side of the module positioning frame 5 of the battery module abuts against the wall of the tray cavity 12, allowing the battery module to be firmly fixed to the battery tray rack 1 of the battery case. A tray support portion 13 is formed on the side of the tray body 11 near the opening of the tray cavity 12, which is protruded outward and extends along the circumference of the tray body 11.

[0029] The core of this embodiment is that, specifically in conjunction with Figures 1, 3 and 9, the above-mentioned battery box also includes a box body 2 and a slider detachable part 3. The box body 2 has an outer frame 21 and a box support beam 22. A battery compartment 23 is provided inside the outer frame 21 of the box, and the box support beam 22 is fixedly connected to the outer frame 21 of the box.

[0030] Specifically, the outer frame 21 of the box includes a box bottom plate, two oppositely arranged outer transverse frames 211, and two oppositely arranged outer vertical frames 212. The two outer vertical frames 212 are located between the two outer transverse frames 211. The two ends of each outer vertical frame 212 are fixedly connected to the two outer transverse frames 211 respectively. The two outer transverse frames 211 and the two outer vertical frames 212 are fixedly connected to the box bottom plate. In addition, the box bottom plate, the two outer transverse frames 211 and the two outer vertical frames 212 are arranged to form a battery compartment 23. In some embodiments, the box support beam 22 is parallel to the outer vertical frames 212 and fixedly connected to the outer transverse frames 211. The above-mentioned fixed connection can be selected as a welding connection, a clamping connection, or a combination of welding connection and clamping connection.

[0031] As shown in FIG1 , the box support beam 22 is provided with an anti-slip groove 24 located on one side of the box support beam 22 near the battery compartment 23. The anti-slip groove 24 extends along the length of the box support beam 22. In some embodiments, the anti-slip groove 24 passes through the box support beam 22. The slider detachable member 3 is slidably mounted in the anti-slip groove 24, and the anti-slip buckle 31 of the slider detachable member 3 can constrain and secure the battery tray rack 1 to the box outer frame 21 and the box support beam 22.

[0032] That is, during the assembly of the battery tray rack 1 to the box body 2, the tray support portion 13 of the battery tray rack 1 abuts against the outer frame 21 of the box body and the box body support beam 22. The slider detachable member 3 is then slidably connected to the anti-slip groove 24, and the anti-slip buckle portion 31 of the slider detachable member 3 is buckled into the tray support portion 13 of the battery tray rack 1, so that the tray support portion 13 of the battery tray rack 1 is clamped between the box body support beam 22 and the anti-slip buckle portion 31 of the slider detachable member 3. Then, the battery tray rack 1 will be completely constrained on the box body 2, achieving a stable assembly of the battery tray rack 1 and the box body 2. In order to ensure that the two opposite sides of the battery tray rack 1 can be evenly stressed, the two box body support beams 22 acting on the two opposite sides of the battery tray rack 1 are both slidably provided with slider detachable members 3.

[0033] Of course, as shown in Figure 9, when the battery tray rack 1 is assembled on one side of the outer vertical frame 212 close to the outer frame 21 of the box body, one of the tray support parts 13 of the battery tray rack 1 abuts against the outer vertical frame 212 of the outer frame 21 of the box body. In order to ensure that the two opposite sides of the battery tray rack 1 can be evenly stressed, an anti-slip groove 24 is provided on the outer vertical frame 212 of the outer frame 21 of the box body, so that the tray support part 13 subjected to the force of the outer vertical frame 212 can also be fastened by the slider detachable part 3.

[0034] It should be added that the method of setting the anti-slip groove 24 on the box support beam 22 and the outer vertical frame 212 of the box outer frame 21 is not limited. According to the assembly requirements and design requirements, the position and number of the anti-slip grooves 24 set on the box body 2 can be adjusted. For example, in order to improve the firmness and stability of the assembly between the battery tray rack 1 and the battery box, the outer horizontal frame 211 of the box outer frame 21 can also be provided with an anti-slip groove 24. In this way, the box support beam 22 and the outer horizontal frame 211 and the outer vertical frame 212 of the box outer frame 21 are all provided with anti-slip grooves 24. Then, the peripheral side of the battery tray rack 1 can be buckled through one or more slider detachable parts 3, thereby improving the force balance of the battery tray rack 1.

[0035] Alternatively, the anti-slip groove 24 is only arranged on the box support beam 22 of the box body 2, or the anti-slip groove 24 is only arranged on the box outer frame 21 of the box body 2, or the anti-slip groove 24 is arranged on the box support beam 22 and the outer horizontal frame 211 of the box outer frame 21.

[0036] From the above, it can be seen that the use of the slider detachable member 3 to constrain and fix the battery tray rack 1 to the outer frame 21 and the box support beam 22 not only avoids the inconvenience of disassembly and assembly and the problem of loose assembly caused by thread failure of fasteners with threaded structures such as bolts, but also ensures the stability and safety of the battery pack. At the same time, the punching process is simplified, and the slider detachable member 3 can be adjusted along the groove extension direction of the anti-slip groove 24 to adjust the installation position. The number of slider detachable members 3 can also be increased or decreased at any time in the anti-slip groove 24, thereby improving the assembly flexibility and convenience of the battery box and battery pack.

[0037] Surprisingly, the anti-slip grooves 24 not only cooperate with the slider detachable member 3 to constrain and secure the battery tray rack 1, but also reduce the weight of the box body 2 and the battery box, facilitating a lightweight design for the battery pack. To reduce the weight of the box support beam 22, a weight-reducing cavity 25 can be provided within the box support beam 22.

[0038] In this embodiment, as shown in Figures 1 and 3 , the battery tray frame 1 is provided with a positioning anti-slip groove 15. Specifically, the positioning anti-slip groove 15 extends from the side of the tray support portion 13 toward the tray inner cavity 12. The anti-slip buckle portion 31 of the slider detachable member 3 is engaged with the positioning anti-slip groove 15. In some embodiments, there are one or more positioning anti-slip grooves 15, and the one or more positioning anti-slip grooves 15 are evenly distributed along the extension direction of the tray support portion 13.

[0039] In this way, the slider detachable member 3 is assembled to the anti-slip groove 24 and slid along the groove length direction of the anti-slip groove 24 until the anti-slip buckle portion 31 of the slider detachable member 3 is snap-fitted and embedded in the designated positioning anti-slip groove 15, thereby achieving the purpose of rapid positioning and improving the efficiency and convenience of assembly. In addition, after the anti-slip buckle portion 31 of the slider detachable member 3 is snap-fitted and embedded in the positioning anti-slip groove 15, under the action of the positioning anti-slip groove 15, the slider detachable member 3 can be constrained from moving horizontally in the groove length direction of the anti-slip groove 24, thereby avoiding the problem that the slider detachable member 3 is easily moved in the groove length direction of the anti-slip groove 24 when the battery box and battery pack vibrate, thereby improving the assembly stability between the slider detachable member 3, the battery tray rack 1 and the box body 2.

[0040] In some embodiments, specifically referring to FIG. 1 and FIG. 2 , the battery box further includes an elastic buffer 6 , which is disposed between the box body 2 and the battery tray rack 1 .

[0041] Specifically, the elastic buffer 6 can be made of silicone material, plastic material, or rubber material. The elastic properties of the elastic buffer 6 can not only buffer the impact force of the battery tray rack 1 during assembly to the box body 2, avoiding the battery tray rack 1 and the box body 2 from being subjected to rigid collisions and causing wear and noise, but also avoiding the battery tray rack 1 and the box body 2 from colliding and making noise under vibration.

[0042] In addition, by applying a force to the tray support portion 13 of the battery tray rack 1 in a direction perpendicular to the top surface of the tray support portion 13, the elastic buffer 6 is over-compressed, and the battery module and the battery tray rack 1 are temporarily lowered in the height direction, thereby ensuring that the slider detachable member 3 can move stably and smoothly along the groove length direction of the anti-slip groove 24. When the anti-slip buckle portion 31 of the slider detachable member 3 is engaged and embedded in the positioning anti-slip groove 15, and the force applied to the battery tray rack 1 is removed, the battery module and the battery tray rack 1 are restored to their initial height in the height direction under the action of the deformation recovery of the elastic buffer 6, thereby avoiding the risk of the anti-slip buckle portion 31 of the slider detachable member 3 being separated from the positioning anti-slip groove 15.

[0043] It should be noted that when the anti-detachment buckle portion 31 of the slider detachable component 3 directly acts on the tray support portion 13 of the battery tray rack 1, the elastic buffer 6 can increase the pressure of the anti-detachment buckle portion 31 on the tray support portion 13, thereby increasing the friction between the anti-detachment buckle portion 31 and the tray support portion 13, and also improving the assembly stability between the battery tray rack 1 and the box body 2.

[0044] In some embodiments, specifically referring to Figures 1 and 4 , a buffer embedding groove 26 is provided on the above-mentioned outer frame 21 of the box and the box support beam 22, and the elastic buffer 6 is embedded in the buffer embedding groove 26, and the width dimension of the elastic buffer 6 is adapted to the groove width dimension of the buffer embedding groove 26, or the groove width dimension of the buffer embedding groove 26 is larger than the width dimension of the elastic buffer 6, wherein, after the elastic buffer 6 is embedded in the buffer embedding groove 26, part of the elastic buffer 6 protrudes from the buffer embedding groove 26 and abuts against the battery tray rack 1.

[0045] Specifically, the notch of the anti-slip groove 24 in the groove depth direction is defined as the top notch of the anti-slip groove 24, and the notch of the anti-slip groove 24 in the groove length direction is defined as the end notch of the anti-slip groove 24. As shown in Figure 4, the buffering clamping groove 26 is provided on one side of the top notch of the anti-slip groove 24, and the groove length direction of the buffering clamping groove 26 is consistent with the groove length direction of the anti-slip groove 24. In order to ensure that the slider detachable member 3 is stably slidably connected to the interior of the anti-slip groove 24, the applicant provides an embodiment as follows:

[0046] As shown in FIG4 , the anti-slip chute 24 has an extended groove cavity 241 extending in the groove width direction. That is, the anti-slip chute 24 includes a chute body and an extended groove cavity 241. The extended groove cavity 241 is located on the side of the chute body close to the groove bottom, and the chute body and the extended groove cavity 241 are connected. The number of the extended groove cavity 241 can be selected as one, and the anti-slip chute 24 is an L-shaped chute structure. The number of the extended groove cavity 241 can be selected as two, and the two extended groove cavities 241 are located on two opposite sides of the chute body, and the anti-slip chute 24 is an inverted T-shaped chute structure.

[0047] Correspondingly, please refer to Figures 5, 6 and 7 for details. The slider detachable component 3 also includes a slider body 32 and an extended buckle portion 33. The extended buckle portion 33 is formed by protruding from the slider body 32 toward the extended groove cavity 241. The anti-slip buckle portion 31 and the extended buckle portion 33 are located on two opposite sides of the slider body 32. The anti-slip buckle portion 31 is fixedly connected to the slider body 32. In some embodiments, the anti-slip buckle portion 31, the slider body 32 and the extended buckle portion 33 are formed as one piece.

[0048] It should be noted that, as shown in Figure 7, when the number of extended groove cavities 241 is one, the number of extended snap-fit ​​portions 33 is correspondingly configured to be one, and the slider body 32 and the extended snap-fit ​​portion 33 are formed into an L-shaped structure. As shown in Figures 5 and 6, when the number of extended groove cavities 241 is two, the number of extended snap-fit ​​portions 33 is correspondingly configured to be two, and the extended snap-fit ​​portion 33 and the two slider bodies 32 are formed into an inverted T-shaped structure, and each extended snap-fit ​​portion 33 corresponds to each extended groove cavity 241.

[0049] It should also be noted that, as shown in Figures 6 and 7, the number of anti-slip buckle parts 31 can be configured to be one, that is, the anti-slip buckle part 31 extends toward one side of the slider body 32, then the anti-slip buckle part 31 and the slider body 32 are formed into an inverted L-shaped structure. As shown in Figure 5, the number of anti-slip buckle parts 31 can also be optionally configured to be two, and the two anti-slip buckle parts 31 extend from two opposite sides of the slider body 32, then the slider body 32 and the two anti-slip buckle parts 31 are formed into a T-shaped structure.

[0050] In the above, the battery tray rack 1 and the battery module can be fixed to the battery box very firmly and stably by using the slider detachable part 3, avoiding the problem of thread failure that is easy to occur in the bolt connection during long-term use. In addition, it also avoids the risk of the battery module being easily lifted by atmospheric pressure when the battery cell 4 in the battery module has thermal runaway due to the instantaneous increase in pressure inside the battery box exceeding the axial bearing capacity of the bolt, providing a stable and firm structure and assembly for the battery module, and improving the stability and safety of the battery module and battery pack.

[0051] When the slider detachable component 3 slides in the anti-slip groove 24, the side surface of the slider body 32 of the slider detachable component 3 contacts the inner groove wall of the groove body of the anti-slip groove 24, or the side surface of the extended buckling portion 33 of the slider detachable component 3 contacts the cavity wall of the extended groove cavity 241 of the anti-slip groove 24, the slider detachable component 3 is easily deflected by unilateral friction, so that the anti-slip buckle portion 31 of the slider detachable component 3 is tilted and buckled on the tray support portion 13 of the battery tray rack 1, so that the force-bearing surface between the anti-slip buckle portion 31 and the tray support portion 13 is reduced, or the anti-slip buckle portion 31 cannot be snapped into the interior of the positioning anti-slip groove 15, resulting in a problem of improper assembly.

[0052] The guide ribs 27 are provided at the bottom of the anti-slip groove 24, and the guide ribs 27 extend in the direction of the groove length of the anti-slip groove 24. The slider detachable member 3 is provided with a guide notch 34 for slidingly engaging the guide ribs 27. The guide notch 34 passes through the slider body 32 of the slider detachable member 3. In some embodiments, the shape and size of the guide notch 34 are adapted to the shape and size of the guide ribs 27. When the slider detachable member 3 slides in the anti-slip groove 24, the guide notch 34 and the guide rib 27 form a sliding fit, that is, the inner side surface of the guide notch 34 and the outer surface of the guide rib 27 are in sliding contact, so that the slider detachable member 3 can be stably stressed during the sliding process, not only avoiding the problem of deflection of the anti-slip buckle portion 31, but also stably guiding the slider detachable member 3 to slide back and forth in the groove length direction of the anti-slip groove 24.

[0053] In some embodiments, as shown in Figure 4, a disassembly and assembly station 28 is configured at one end of the guide rib 27 near the end notch of the anti-slip slide groove 24, and a preset distance is set between the end of the guide rib 27 and the end notch of the anti-slip slide groove 24, rather than extending to the end notch of the anti-slip slide groove 24.

[0054] In this way, after the slider detachable member 3 is assembled into the anti-slip groove 24, it can also be deflected / rotated in the disassembly station 28 to adjust the installation angle of the slider detachable member 3 before sliding. That is, after the slider detachable member 3 is placed from the top notch of the anti-slip groove 24 into the anti-slip groove 24, the slider detachable member 3 is deflected by a certain angle so that the guide notch 34 of the slider detachable member 3 is aligned with the guide rib 27 in the anti-slip groove 24. At this time, the extended locking portion 33 of the slider detachable member 3 will be completely locked into the extended groove cavity 241 of the anti-slip groove 24. Finally, it is only necessary to apply a force to the slider detachable member 3 so that the slider detachable member 3 moves horizontally along the groove length direction of the anti-slip groove 24, that is, the guide notch 34 is slidably connected to the guide rib 27.

[0055] Since the battery cells 4 of the battery module generate a large amount of heat during long-term use, and when one of the battery cells 4 in the battery module experiences thermal runaway, the battery cell 4 in the thermal runaway state is likely to release high-temperature hot air and high-temperature substances. In order to prevent the high-temperature hot air and high-temperature substances from causing heat spread in the battery box / battery pack, the present application further provides an embodiment as follows:

[0056] Specifically, please refer to Figures 2 and 3. The battery tray rack 1, the outer frame 21 of the box and the box support beam 22 are formed into a pressure relief channel, that is, when the tray support portion 13 of the battery tray rack 1 abuts against the box support beam 22, there is a distance between the battery tray rack 1 and the box bottom plate of the outer frame 21 of the box. In this way, the battery tray rack 1, the box support beam 22 and the box bottom plate of the outer frame 21 of the box are surrounded by a formed pressure relief channel, and / or the battery tray rack 1, the box support beam 22 and the box bottom plate of the outer frame 21 of the box, and the outer vertical frame 212 are surrounded by a formed pressure relief channel.

[0057] In some embodiments, a frame pressure relief cavity is provided inside the outer frame 21 of the box body, and a connecting port is also provided on the side wall of the outer frame 21 of the box body. The number of connecting ports can be selected as one, and the number of connecting ports can also be selected as multiple. The pressure relief channel is connected to the frame pressure relief cavity through at least one connecting port. A pressure relief valve is also provided on the outer frame 21 of the box body, and a plurality of heat dissipation and pressure relief holes 14 are provided on the tray body 11 of the battery tray rack 1. Each battery cell 4 is provided corresponding to each heat dissipation and pressure relief hole 14.

[0058] In this way, the heat released by each battery cell 4 in the battery module or the high-temperature gas and high-temperature substance released in the thermal runaway state can quickly diffuse to the inside of the pressure relief channel through the corresponding heat dissipation and pressure relief holes 14. Then, the heat and flowing air will be able to be guided into the frame pressure relief cavity of the outer frame 21 of the box under the action of the pressure relief channel, and finally be quickly discharged from the pressure relief valve, so as to achieve the purpose of timely removing the heat or hot air released by the battery cell 4, avoiding the risk of heat spread caused by the accumulation of a large amount of heat in the battery box, thereby improving the safety of the battery pack.

[0059] Based on the structure and connection relationship of the battery pack described above, this application also discloses an electrical device using the battery pack. The electrical device can be a vehicle, such as an electric car, electric cruise ship, or battery-powered vehicle; industrial equipment, such as a hand drill, electric wrench, or electric bolt cutter; or household electrical appliances, such as electric toys, game consoles, and laptop computers.

Claims

1. A battery box, comprising: Battery tray rack (1); A box body (2), the box body (2) comprising an outer box frame (21) and a box support beam (22), a battery compartment (23) being arranged inside the outer box frame (21), an anti-slip groove (24) being arranged on the outer box frame (21) and / or the box support beam (22), and the box support beam (22) being fixedly connected to the outer box frame (21); A slider detachable member (3), wherein the slider detachable member (3) is slidably arranged in the anti-slip groove (24), and the anti-slip buckle portion (31) of the slider detachable member (3) can constrain and fix the battery tray rack (1) on the outer frame (21) of the box body and the box body support beam (22).

2. The battery case according to claim 1, wherein: The bottom of the anti-slip slide groove (24) is provided with a guide convex rib (27), and the guide convex rib (27) extends in the direction of the extension of the groove length of the anti-slip slide groove (24). The slider disassembling member (3) has a guide notch (34) for slidingly connecting the guide convex rib (27), and a disassembly station (28) is arranged at one end of the guide convex rib (27) close to the end notch of the anti-slip slide groove (24).

3. The battery case according to claim 1 or 2, wherein: The battery tray frame (1) is provided with a positioning anti-slip groove (15), and the anti-slip buckle portion (31) of the slider detachable component (3) is snap-connected to the positioning anti-slip groove (15).

4. The battery case according to claim 1 or 2, wherein: The anti-slip sliding groove (24) extends in the groove width direction to form an extended groove cavity (241); the slider detachable component (3) further comprises a slider body (32) and an extended buckle portion (33); the extended buckle portion (33) is formed to protrude from the slider body (32) toward the extended groove cavity (241); and the anti-slip buckle portion (31) is fixedly connected to the slider body (32).

5. The battery box according to claim 1 or 2, further comprising an elastic buffer (6), wherein the elastic buffer (6) is arranged between the box body (2) and the battery tray rack (1).

6. The battery case according to claim 5, wherein: The outer frame (21) and the box support beam (22) are provided with a buffering recess (26), and the elastic buffer (6) is embedded in the buffering recess (26).

7. The battery case according to claim 1 or 2, wherein: The battery tray rack (1), the outer frame body (21) and the box body support beam (22) are formed into a pressure relief channel, a frame pressure relief chamber is arranged inside the outer frame body (21), and at least one connecting port is arranged on the side wall of the outer frame body (21), the pressure relief channel is connected with the frame pressure relief chamber through at least one connecting port, and a pressure relief valve is arranged on the outer frame body (21).

8. A battery pack comprising: The battery case according to any one of claims 1 to 7; A battery module is mounted and fixed on a battery tray rack (1) of the battery box.

9. The battery pack according to claim 8, wherein: The battery module comprises a module positioning frame (5) and one or more evenly arranged battery cells (4), each of the battery cells (4) being plugged into the module positioning frame (5), and each of the battery cells (4) being capable of heat exchange with a pressure relief channel of the battery box.

10. An electrical device comprising the battery pack according to claim 8 or 9.

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