Battery packs and vehicles

Abstract

This utility model discloses a battery pack and a vehicle, relating to the field of battery pack technology. The battery pack includes a cell box, an electrical box, and a side beam assembly. The cell box contains battery cells. The electrical box contains at least one high-voltage power distribution module electrically connected to the battery cells. The side beam assembly includes two spaced-apart side beams, with the electrical box and cell box located between the two side beams, and at least one of them detachably connected to the side beam assembly. The technical solution provided by this utility model aims to reduce the difficulty and cost of battery pack maintenance and ensure repair efficiency.

Description

Technical Field

[0001] This utility model relates to the field of battery pack technology, and in particular to a battery pack and a vehicle. Background Technology

[0002] A battery pack typically includes battery cells and a high-voltage power distribution module. In related technologies, the battery cells and the high-voltage power distribution module are usually integrated and installed within the battery pack's casing. However, maintaining the battery pack requires disassembling the casing. Maintaining either the battery cells or the high-voltage power distribution module necessitates adding protective fixtures to the other, increasing the difficulty and cost of maintenance and reducing efficiency. Utility Model Content

[0003] The main purpose of this utility model is to propose a battery pack and vehicle that aims to reduce the difficulty and cost of maintaining the battery pack and ensure maintenance efficiency.

[0004] To achieve the above objectives, the battery pack proposed in this utility model includes:

[0005] A battery cell box, wherein battery cells are disposed inside the battery cell box;

[0006] An electrical box, wherein at least one high-voltage power distribution module is provided inside the electrical box, and the high-voltage power distribution module is electrically connected to the battery cell; and

[0007] A side beam assembly comprising two spaced-apart opposing side beams, wherein the electrical box and the battery cell box are located between the two side beams, and at least one of them is detachably connected to the side beam assembly.

[0008] In one embodiment, the battery cell box includes a first mounting wall, which is opposite to the electrical box in the extension direction of the side beam. The first mounting wall is provided with an electrical connector, and the high-voltage power distribution module is electrically connected to the battery cell through the electrical connector.

[0009] In one embodiment, the electrical box includes a second mounting wall disposed opposite to the first mounting wall. A mounting plate is fixed to one side of the first mounting wall opposite to the second mounting plate. The electrical connector is disposed through the mounting plate and the first mounting wall. The second mounting wall abuts against the mounting plate. One end of the electrical connector is electrically connected to the battery cell, and the other end is in contact with the high-voltage power distribution module for conduction.

[0010] In one embodiment, the first mounting wall is provided with a first sealing gasket, which is disposed corresponding to the periphery of the mounting plate and sandwiched between the mounting plate and the first mounting wall.

[0011] In one embodiment, the mounting plate is connected to the first mounting wall by bolts, and the bolts are provided on opposite sides of the electrical connector, with the bolts located on the inner circumference of the first sealing gasket.

[0012] In one embodiment, the second mounting wall is provided with an electrical interface and a second sealing gasket surrounding the electrical interface. The electrical interface and the electrical connector are disposed opposite to each other, and the second sealing gasket is interference-fitted between the second mounting wall and the mounting plate.

[0013] In one embodiment, the interference of the second sealing gasket is Q, and the thickness of the second sealing gasket is H, satisfying: 0.3H≤Q≤0.7H.

[0014] In one embodiment, at least one of the battery cell box and the electrical box has a flange on its upper side, and the mounting plate is located below the flange and sandwiched between the first mounting wall and the second mounting wall.

[0015] In one embodiment, the battery cell box has a clearance groove on the lower edge of the first mounting wall, and the electrical box has a support strip protruding from the lower edge of the second mounting wall, the support strip being inserted into the clearance groove.

[0016] In one embodiment, the electrical box is detachably connected to the side beam, and the battery cell box is fixed to the side beam.

[0017] In one embodiment, at least one of the battery cell box and the electrical box includes a box body and a box cover, the box cover being disposed on the box body.

[0018] This utility model also proposes a vehicle that includes the battery pack as described above.

[0019] The technical solution of this utility model involves installing the battery cell in a battery cell box and the high-voltage power distribution module in an electrical box. The battery cell box and electrical box are independently positioned between the two side beams of the side beam assembly, with at least one detachably connected to a side beam. This allows the battery cell box and electrical box to be independently fixed relative to the side beam assembly. Thus, when maintenance or replacement of the high-voltage power distribution module is required, maintenance personnel can directly disassemble the connection structure between the electrical box and the side beam, independently removing the electrical box from the side beam assembly as a whole, without touching or disassembling the battery cell box and its internal battery cells, avoiding disturbance to the battery cells caused by operating the high-voltage power distribution module. Similarly, when replacing or repairing the battery cells, only the connection between the battery cell box and the side beam can be disassembled, and the battery cell box can be moved independently. In this case, the electrical box can remain in its original position or be disassembled separately, without the fixing method of the electrical box obstructing the disassembly and assembly path of the battery cell box. During battery pack maintenance, interference between the high-voltage power distribution module and the battery cells is avoided, thereby reducing protective equipment, maintenance operation complexity and error risk, and thus reducing the difficulty and cost of battery pack maintenance, ensuring maintenance efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0021] Figure 1 An exploded view of an embodiment of the battery pack provided by this utility model;

[0022] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0023] Figure 3 A partial structural diagram of the battery pack provided by this utility model on one side of the electrical box;

[0024] Figure 4 A cross-sectional view of the battery pack provided by this utility model at the connection between the electrical box and the cell box;

[0025] Figure 5 for Figure 4 A magnified view of a section at point B.

[0026] Explanation of icon numbers:

[0027] 100. Battery cell box; 110. Battery cell box body; 111. Flanged edge; 112. Clearance groove; 120. Battery cell box cover; 130. First mounting wall; 140. Electrical connector; 150. Mounting plate; 160. First sealing gasket; 170. Bolt;

[0028] 200. Electrical box; 210. Electrical box body; 211. Support bar; 220. Electrical box cover; 230. Second mounting wall; 240. Second sealing gasket; 250. Electrical interface; 301. High-voltage power distribution module; 302. Battery cell; 400. Side beam.

[0029] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0031] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0032] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0033] This utility model proposes a battery pack.

[0034] Please refer to Figure 1 , Figure 3and Figure 4 In one embodiment of this utility model, the battery pack includes:

[0035] Battery cell box 100, and battery cell 302 is installed inside battery cell box 100;

[0036] Electrical box 200, containing at least one high-voltage power distribution module 301, electrically connected to battery cell 302; and

[0037] The side beam assembly includes two spaced-apart opposing side beams 400, an electrical box 200 and a cell box 100 located between the two side beams 400, and at least one of them is detachably connected to the side beam assembly.

[0038] The technical solution of this utility model involves installing the battery cell 302 in the battery cell box 100 and the high-voltage power distribution module 301 in the electrical box 200. The battery cell box 100 and the electrical box 200 are independently arranged between the two side beams 400 of the side beam assembly, and at least one of them is detachably connected to the side beam 400, so that the battery cell box 100 and the electrical box 200 can be independently fixed relative to the side beam assembly. In this way, when the high-voltage power distribution module 301 needs to be maintained or replaced, the maintenance personnel can directly disassemble the connection structure between the electrical box 200 and the side beam 400, and independently remove the electrical box 200 from the side beam assembly as a whole, without touching or disassembling the battery cell box 100 and the battery cell 302 inside, thus avoiding disturbance to the battery cell 302 caused by operating the high-voltage power distribution module 301. Similarly, when it is necessary to replace or repair cell 302, only the connection between cell box 100 and side beam 400 can be disassembled, and cell box 100 can be moved out independently. At this time, electrical box 200 can remain in place or be disassembled separately, and the method of fixing electrical box 200 will not obstruct the disassembly and assembly path of cell box 100. During the maintenance of the battery pack, mutual interference between high-voltage power distribution module 301 and cell 302 is avoided, thereby reducing protective tooling, reducing the complexity of maintenance operations and the risk of errors, and thus reducing the difficulty and cost of maintaining the battery pack, ensuring maintenance efficiency.

[0039] It is understandable that the electrical box 200 can be detachably connected to the side beam 400 of the side beam assembly, or the cell box 100 can be detachably connected to the side beam 400 of the side beam assembly, or both the electrical box 200 and the cell box 100 can be detachably connected to the side beam 400 of the side beam assembly. In this case, the electrical box 200 and the cell box 100 do not have a mutually interfering connection, but they can either abut against each other or be interlocked. When the electrical box 200 or the cell box 100 is disassembled, the connection between them automatically disengages, thereby enabling separate maintenance of either the cell 302 or the high-voltage distribution module 301 without being affected by the other. It should be noted that the side beam 400 of the side beam assembly is used to support the electrical box 200 or the battery cell box 100. When the battery cell box 100 and the electrical box 200 are mounted on the vehicle frame, the installation stability of the electrical box 200 and the battery cell box 100 is not affected even when they are detachably connected to the side beam assembly. Additionally, the battery cell box 100 is equipped with a low-voltage adapter to facilitate the transfer of low-voltage sampling signals.

[0040] In one embodiment, please refer to Figure 1 and Figure 2 The electrical box 200 is detachably connected to the side beam 400, and the battery cell box 100 is fixed to the side beam 400. It can be understood that the electrical box 200 is detachably connected to the side beam 400 via bolts 170, clips, or other connection methods, while the battery cell box 100 can be fixed to the side beam 400 via welding, high-strength bolts 170, or structural adhesive, forming a stable load-bearing foundation. This allows the electrical box 200 to be disassembled and maintained independently of the battery cell box 100: when the high-voltage distribution module 301 malfunctions or needs upgrading, maintenance personnel only need to disassemble the connector between the electrical box 200 and the side beam 400 to remove the entire electrical box 200 from the side beam assembly, enabling rapid replacement of the high-voltage distribution module 301. The battery cell box 100 and its internal battery cell 302 structure remain fixed, without disturbing the battery cells 302 within the battery cell box 100, thus simplifying the maintenance process, reducing operational risks, and avoiding loosening or damage to the battery cell 302 connection due to frequent disassembly and reassembly. It should be noted that the high-voltage power distribution module 301, as a relatively vulnerable component or one requiring technological upgrades, focuses on making the electrical box 200 detachable. This helps to reduce the maintenance difficulty of the battery pack while ensuring its stability. Of course, in other embodiments, both the electrical box 200 and the cell box 100 can be detachably connected to the side beam 400.

[0041] Regarding the structural form of the electrical box 200 and the battery cell box 100, in one embodiment, please refer to... Figure 1At least one of the cell box 100 and the electrical box 200 includes a box body and a box cover, with the box cover covering the box body. It can be understood that the cell box 100 includes a cell box body 110 and a cell box cover 120, and the electrical box 200 includes an electrical box body 210 and an electrical box cover 220. When assembling, inspecting, and maintaining the cell 302 or the high-voltage power distribution module 301, this can be achieved by opening the corresponding box cover, without the need to completely disassemble the cell box 100 or the electrical box 200. Specifically, for the cell box 100 and the electrical box 200, either the electrical box body 210 or the cell box body 110 can be connected to the side beam 400. When maintaining the high-voltage distribution module 301 or the cell 302, the electrical box cover 220 or the cell box cover 120 can be opened to expose the high-voltage distribution module 301 or the cell 302. In this case, it is also possible to not remove the electrical box body 210 or the cell box body 110 to reduce maintenance costs and time. Without loss of generality, a reliable seal can be achieved between the box cover and the corresponding box body through a sealing gasket, bolt 170, or snap-fit ​​structure to ensure that the cell box 100 has the necessary protection level to prevent thermal runaway propagation, and that the electrical box 200 meets the dustproof, waterproof, and insulation safety requirements of high-voltage components.

[0042] In one implementation, please refer to Figure 2 , Figure 4 and Figure 5The battery cell box 100 includes a first mounting wall 130, which is opposite to the electrical box 200 in the extension direction of the side beam 400. The first mounting wall 130 is provided with an electrical connector 140, through which the high-voltage power distribution module 301 is electrically connected to the battery cell 302. It can be understood that the battery cell box 100 and the electrical box 200 are distributed in the extension direction of the side beam 400, and the electrical connector 140 is located in the space between the battery cell box 100 and the electrical box 200 to achieve electrical connection between the battery cell 302 and the high-voltage power distribution module 301. The electrical connector 140 can be a high-voltage connector, a conductive busbar, or a transition copper bar. This design concentrates the electrical connection between the cell box 100 and the electrical box 200 in the area of ​​the first mounting wall 130. When the electrical box 200 needs to be disassembled separately for maintenance or replacement of the high-voltage power distribution module 301, only the electrical connector 140 on the first mounting wall 130 needs to be disconnected to independently detach the electrical box 200 from the side beam assembly without any disassembly or structural adjustment of the cell box body 110. Conversely, when disassembling the cell box 100 for maintenance of the cell 302, the electrical box 200 can remain connected or be disassembled separately without affecting each other. Furthermore, the high-voltage power distribution module 301 and the cell 302 are electrically connected in the extension direction of the side beam 400. The electrical box 200 and the cell box 100 provide some protection, reducing the impact of the external environment on the electrical connection between the high-voltage power distribution module 301 and the cell 302. Similarly, the low-voltage adapter can also be located on the first mounting wall 130, achieving conductivity through a male-female connector. Of course, in other embodiments, the high-voltage power distribution module 301 and the battery cell 302 may be electrically connected in an area different from the area where the first mounting wall 130 is located, such as by connecting them at the bottom through an adapter, or by connecting them through an adapter on the side beam 400.

[0043] Furthermore, in this embodiment, please refer to Figure 4 and Figure 5The electrical box 200 includes a second mounting wall 230 disposed opposite to the first mounting wall 130. A mounting plate 150 is fixed to one side of the first mounting wall 130 opposite to the second mounting plate 150. An electrical connector 140 is disposed through the mounting plate 150 and the first mounting wall 130. The second mounting wall 230 abuts against the mounting plate 150. One end of the electrical connector 140 is electrically connected to the battery cell 302, and the other end is in contact with the high-voltage power distribution module 301. It can be understood that when the electrical box 200 is assembled, its second mounting wall 230 abuts against the mounting plate 150, so that the exposed end of the electrical connector 140 forms a stable contact with the high-voltage power distribution module 301 inside the electrical box 200, thereby completing the electrical connection between the battery cell 302 and the high-voltage power distribution module 301. In this way, the fixing and electrical transition of the electrical connector 140 are concentrated on the mounting plate 150 on the side of the cell box 100, so that the installation of the electrical box 200 and the establishment of the electrical connection are completed simultaneously, without the need for additional high-voltage wiring harnesses or complex wiring operations. During maintenance, when it is necessary to replace or repair the high-voltage power distribution module 301, it is only necessary to disassemble the connection between the electrical box 200 and the side beam assembly, so that the second mounting wall 230 is detached from the mounting plate 150. The electrical connector 140 and the high-voltage power distribution module 301 are automatically disconnected, and the electrical box 200 can be removed. The electrical connector 140 and its connection with the cell 302 remain on the cell box 100 without any disturbance, thereby improving the assembly convenience of the battery pack and the reliability of the electrical connection. Of course, in other embodiments, the electrical connector 140 can also be directly fixed to the first mounting wall 130, or the electrical connector 140 can be fixed to the second mounting wall 230 and disassembled together with the electrical box 200.

[0044] Furthermore, in this embodiment, please continue to refer to... Figure 4 and Figure 5The first mounting wall 130 is provided with a first sealing gasket 160, which is disposed around the periphery of the mounting plate 150 and sandwiched between the mounting plate 150 and the first mounting wall 130. It can be understood that when the mounting plate 150 is fixed to the first mounting wall 130 by fasteners, the first sealing gasket 160 is compressed and forms a reliable sealing interface. The first sealing gasket 160 effectively blocks the path of external moisture, dust, or conductive contaminants entering the cell box 100 along the gap between the mounting plate 150 and the first mounting wall 130, improving the protection level of the cell box 100, especially ensuring the electrical safety and long-term reliability of the electrical connector 140 penetrating the first mounting wall 130 at the penetration point, preventing insulation degradation, electrochemical corrosion, or short circuit risks caused by poor sealing. Meanwhile, since the first sealing gasket 160 is integrated into the mounting structure on the side of the cell box 100, forming a complete electrical and sealing unit together with the mounting plate 150, when the electrical box 200 is disassembled to replace the high-voltage power distribution module 301, the sealing structure is retained with the cell box 100, eliminating the need for repeated disassembly and replacement of the sealing components, thus avoiding sealing failure caused by repeated disassembly. When reinstalling the electrical box 200, it is only necessary to ensure that its second mounting wall 230 is in close contact with the mounting plate 150 to maintain the overall sealing performance. Therefore, the first sealing gasket 160, located between the mounting plate 150 and the first mounting wall 130, not only enhances the environmental protection capability of the electrical connection area but also adapts to the independently detachable electrical box 200, ensuring the long-term sealing reliability of the battery pack under frequent maintenance operations, thus balancing safety and maintainability. Of course, in other embodiments, the periphery of the mounting plate 150 and the first mounting wall 130 may be provided with grooves and protrusions to enhance the sealing and interception performance.

[0045] In one embodiment, please refer to Figure 4 and Figure 5The mounting plate 150 is connected to the first mounting wall 130 by bolts 170. Bolts 170 are provided on opposite sides of the electrical connector 140, and the bolts 170 are located on the inner periphery of the first sealing gasket 160. It can be understood that the sealing gasket is arranged around the outside of the bolt 170 connection area, so that the bolts 170 are concentrated inside the sealing area. When the bolts 170 tighten the mounting plate 150, the first sealing gasket 160 is uniformly compressed between the mounting plate 150 and the first mounting wall 130, forming a continuous, closed annular sealing barrier. This effectively blocks the path of external contaminants entering the cell box 100 from around the bolt 170 holes or the edge of the mounting plate 150, thereby improving the sealing reliability of the electrical connection. Simultaneously, since the fixing points of the electrical connector 140 and the mounting plate 150 are distributed between the upper and lower bolts 170, the mounting plate 150 is subjected to more balanced force, reducing deformation or sealing failure caused by localized stress concentration, and ensuring the structural stability of the through-part of the electrical connector 140 and the durability of the electrical connection. When the electrical box 200 is disassembled, the bolt 170 structure on the inner periphery of the first sealing gasket 160 will not be contaminated or corroded due to exposure to the external environment, thus maintaining its connection reliability. Of course, in other embodiments, the bolt 170 may also be located on the outer periphery of the first sealing gasket 160, or the mounting plate 150 may be fixed to the first mounting wall 130 by snap-fit ​​or adhesive.

[0046] Regarding the sealing connection between the second mounting wall 230 and the mounting plate 150, in one embodiment, please refer to... Figure 4 and Figure 5The second mounting wall 230 is provided with an electrical interface 250 and a second sealing gasket 240 surrounding the electrical interface 250. The electrical interface 250 and the electrical connector 140 are arranged opposite to each other, and the second sealing gasket 240 is interference-fitted between the second mounting wall 230 and the mounting plate 150. When the electrical box 200 is assembled to the side beam assembly and docked with the cell box 100, the exposed ends of the electrical interface 250 and the electrical connector 140 are inserted or fitted together to conduct electricity. At the same time, the second sealing gasket 240 is located between the second mounting wall 230 and the mounting plate 150 and is in an interference fit state, thereby forming a complete annular sealing barrier around the high-voltage distribution module 301 and the electrical connector 140 inside the electrical box 200. The interference fit of the second sealing gasket 240 ensures that after assembly, the gasket is fully compressed and tightly fitted between the mating surfaces of the second mounting wall 230 and the mounting plate 150. This effectively blocks external moisture, dust, or foreign objects from entering the high-voltage power distribution module 301 or the electrical connection area through the gaps around the electrical interface 250, improving the protection level and electrical safety of the high-voltage connection and preventing insulation failure or electrochemical corrosion caused by moisture penetration. Simultaneously, fixing the second sealing gasket 240 to the second mounting wall 230 on the side of the electrical box 200, and integrating it with the electrical interface 250, allows the second sealing gasket 240 to be removed along with the electrical box 200 when disassembling it to replace the high-voltage power distribution module 301. During reassembly, there is no need to align the second sealing gasket 240 and the electrical interface 250, facilitating the replacement or maintenance of the electrical box 200. The side beam 400 is provided with a first fixing part, and the electrical box 200 is provided with a second fixing part connected to the first fixing part. In the extending direction of the side beam 400, the distance from the first fixing part to the second sealing gasket 240 is smaller than the distance from the second fixing part to the second sealing gasket 240, so that when the electrical box 200 is installed, the second sealing gasket 240 is in a state of interference between the second mounting wall 230 and the mounting plate 150. Of course, in other embodiments, the second sealing gasket 240 can also be fixed to the side of the mounting plate 150 facing the second mounting wall 230 and spaced around the outer periphery of the electrical connector 140.

[0047] Furthermore, in this embodiment, please refer to Figure 4 and Figure 5The interference fit of the second sealing gasket 240 is Q, and the thickness of the second sealing gasket 240 is H, satisfying: 0.3H≤Q≤0.7H. When the electrical box 200 is installed in place and the second mounting wall 230 abuts against the mounting plate 150, the second sealing gasket 240 is compressed within this interference fit range. If the interference fit Q is less than 0.3H, the compression is insufficient, which may lead to insufficient contact between the sealing gasket and the mounting plate 150 or the second mounting wall 230, forming micro-gaps, reducing sealing performance, and posing a risk of moisture or dust intrusion. If the interference fit Q exceeds 0.7H, the compression is excessive, which may cause plastic deformation or stress relaxation of the material of the second sealing gasket 240. After long-term use, the resilience will decrease, leading to sealing failure. At the same time, excessive compression may also cause deformation or even damage to the structure of the mounting plate 150 or the second mounting wall 230. Thus, by controlling the interference fit between 0.3H and 0.7H, sufficient contact pressure can be generated by the second sealing gasket 240 to achieve a reliable environmental seal, effectively preventing external contaminants from entering the high-voltage connection area and improving electrical safety and system durability. Simultaneously, material fatigue and structural damage caused by excessive compression can be avoided, ensuring the stable and reliable sealing function throughout the battery pack's entire lifespan. Here, H and Q are in mm.

[0048] In one embodiment, please refer to Figure 4 At least one of the cell box 100 and the electrical box 200 has a flange 111 on its upper side, and the mounting plate 150 is located below the flange 111 and sandwiched between the first mounting wall 130 and the second mounting wall 230. Without loss of generality, the flange 111 is provided on the body of the cell box 100 or the electrical box 200 to connect the corresponding box cover, so as to ensure the sealing of the connection between the box cover and the box body. When the electrical box 200 is slidably assembled to the side beam assembly and docked with the cell box 100 in the horizontal or vertical direction, the flange 111 can prevent the electrical box 200 from sliding excessively, and at the same time ensure that the mounting plate 150 is firmly constrained between the first mounting wall 130 and the second mounting wall 230. The thickness of the mounting plate 150 compensates for the gap caused by the flange 111, and the thickness is distributed according to the inclination of the first mounting wall 130 and the second mounting wall 230, so as to ensure that the second mounting wall 230 and the mounting plate 150 are in close contact, and the mounting plate 150 and the first mounting wall 130 are in close contact, thus ensuring the stability of the electrical connection between the high-voltage power distribution module 301 and the cell 302. Among them, the body of the battery cell box 100 can be formed by sheet metal stamping or composite prepreg molding, and the body of the electrical box 200 can be formed by injection molding to ensure the sealing of the battery cell box 100 and the electrical box 200.

[0049] In one embodiment, please refer to Figure 4The battery cell box 100 has a clearance groove 112 on the lower edge of the first mounting wall 130, and the electrical box 200 has a support strip 211 protruding from the lower edge of the second mounting wall 230. The support strip 211 is inserted into the clearance groove 112. When the electrical box 200 is assembled to the side beam assembly and docks with the battery cell box 100, the support strip 211 is inserted into the clearance groove 112, forming a positioning and support fit in the vertical direction and the extension direction of the side beam 400. On the one hand, it achieves precise alignment between the electrical box 200 and the battery cell box 100, ensuring a stable and parallel relative relationship between the second mounting wall 230 and the first mounting wall 130. This guarantees accurate docking between the electrical connector 140 and the electrical interface 250, avoiding poor contact or stress concentration caused by assembly deviations. On the other hand, after the support bar 211 is inserted into the clearance groove 112, it can bear the load of the battery cell box 100, transferring the weight of the battery cell box 100 to the side beam 400, ensuring the installation stability of the battery cell box 100. In addition, when maintenance personnel replace the high-voltage distribution module 301, the electrical box 200 can still be disassembled as a whole, and the support bar 211 can slide out smoothly from the clearance groove 112. When installing the electrical box 200, the support bar 211 is inserted into the clearance groove 112 to the bottom of the groove, providing positioning for the installation of the electrical box 200, thereby improving the ease of assembly.

[0050] This utility model also proposes a vehicle that includes a battery pack. The specific structure of the battery pack is as described in the above embodiments. Since this vehicle adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0051] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A battery pack, characterized by, include: A battery cell box, wherein battery cells are disposed inside the battery cell box; An electrical box, wherein at least one high-voltage power distribution module is provided inside the electrical box, and the high-voltage power distribution module is electrically connected to the battery cell; as well as A side beam assembly comprising two spaced-apart opposing side beams, wherein the electrical box and the battery cell box are located between the two side beams and at least one is detachably connected to the side beam assembly.

2. The battery pack of claim 1, wherein, The battery cell box includes a first mounting wall, which is opposite to the electrical box in the extension direction of the side beam. The first mounting wall is provided with an electrical connector, and the high-voltage power distribution module is electrically connected to the battery cell through the electrical connector.

3. The battery pack of claim 2, wherein, The electrical box includes a second mounting wall disposed opposite to the first mounting wall. A mounting plate is fixed to one side of the first mounting wall opposite to the second mounting wall. The electrical connector is disposed through the mounting plate and the first mounting wall. The second mounting wall abuts against the mounting plate. One end of the electrical connector is electrically connected to the battery cell, and the other end is in contact with the high-voltage power distribution module for conduction.

4. The battery pack of claim 3, wherein, The first mounting wall is provided with a first sealing gasket, which is disposed corresponding to the periphery of the mounting plate and sandwiched between the mounting plate and the first mounting wall.

5. The battery pack of claim 4, wherein, The mounting plate is connected to the first mounting wall by bolts, and the bolts are provided on opposite sides of the electrical connector, with the bolts located on the inner circumference of the first sealing gasket.

6. The battery pack of claim 3, wherein, The second mounting wall is provided with an electrical interface and a second sealing gasket surrounding the electrical interface. The electrical interface and the electrical connector are disposed opposite to each other, and the second sealing gasket is interference-fitted between the second mounting wall and the mounting plate.

7. The battery pack of claim 6, wherein, The interference fit of the second sealing gasket is Q, and the thickness of the second sealing gasket is H, satisfying: 0.3H≤Q≤0.7H.

8. The battery pack of claim 3, wherein, At least one of the battery cell box and the electrical box has a flange on its upper side, and the mounting plate is located below the flange and sandwiched between the first mounting wall and the second mounting wall; And / or, the battery cell box is provided with a clearance groove on the lower edge of the first mounting wall, and the electrical box is provided with a support strip on the lower edge of the second mounting wall, the support strip being inserted into the clearance groove.

9. The battery pack of any one of claims 1 to 8, wherein, The electrical box is detachably connected to the side beam, and the battery cell box is fixed to the side beam; And / or, at least one of the battery cell box and the electrical box includes a box body and a box cover, the box cover being disposed on the box body.

10. A vehicle characterized by comprising: Includes the battery pack as described in any one of claims 1 to 9.

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