Battery pack and vehicle

Abstract

The utility model discloses a battery pack and a vehicle, the battery pack comprises a battery box body, a battery assembly and a BDU unit, the battery assembly is arranged in the battery box body and comprises a plurality of battery monomers, and the BDU unit is arranged in the battery box body and is elastically connected with the battery box body. According to the battery pack provided by the embodiment of the utility model, the BDU unit is elastically connected with the battery box body, so that the connection between the BDU unit and the battery box body can be buffered, noise generated when the BDU unit works can be reduced and transmitted into a vehicle, and the riding comfort of people in the vehicle is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially is related to a battery pack and vehicle. BACKGROUND

[0002] In the related art, the battery pack is usually arranged at the bottom of the vehicle body to provide power for the vehicle. Considering the high-voltage safety design of the power battery pack, a BDU unit (Battery Disconnect Unit) is usually arranged in the battery pack as a high-voltage safety switch to reduce the possibility of safety hazards of the battery pack. However, the noise generated by the BDU unit during operation can be transmitted to the vehicle interior, affecting the comfort of the passengers in the vehicle. Therefore, there is a need to be solved. SUMMARY

[0003] The utility model aims at solving one of the technical problems in the prior art. To this end, one object of the utility model is to provide a battery pack. The BDU unit is elastically connected to the battery box, which can buffer the connection between the BDU unit and the battery box, reduce the noise generated by the BDU unit during operation from being transmitted to the vehicle interior, and improve the comfort of the passengers in the vehicle.

[0004] The utility model further provides a vehicle with the above battery pack.

[0005] According to the battery pack of the first aspect of the utility model, the battery pack comprises a battery box, a battery assembly arranged in the battery box and comprising a plurality of battery monomers, and a BDU unit arranged in the battery box and elastically connected to the battery box.

[0006] According to the battery pack of the utility model, the BDU unit is elastically connected to the battery box, which can buffer the connection between the BDU unit and the battery box, reduce the noise generated by the BDU unit during operation from being transmitted to the vehicle interior, and improve the comfort of the passengers in the vehicle.

[0007] According to some embodiments of the utility model, the connection structure between the BDU unit and the battery box comprises at least one of a buffer block and a buffer spring.

[0008] According to some embodiments of the utility model, the connection structure comprises a buffer block and a connecting column, the buffer block is mounted on the battery box, the BDU unit comprises a BDU body and a BDU shell, the BDU body is arranged in the BDU shell, the connecting column is arranged on the BDU shell, and the connecting column is connected to the buffer block.

[0009] According to some embodiments of the utility model, a connecting hole is arranged on the buffer block, and the connecting column is plug-in arranged in the connecting hole.

[0010] According to some embodiments of the present application, the connecting structure further comprises a buffer spring and a gasket, the BDU shell is provided with a connecting protrusion, the connecting column is connected to the connecting protrusion, the buffer spring and the gasket are both sleeved on the outer circumferential side of the connecting column, the gasket is located on the side of the buffer spring away from the connecting protrusion, one end of the buffer spring is connected to the connecting protrusion, the other end of the buffer spring is connected to the gasket, and the gasket is supported on the upper surface of the buffer block.

[0011] According to some embodiments of the present application, the connecting hole comprises a first hole section and a second hole section, the first hole section is located on the side of the second hole section close to the BDU unit and penetrates through the upper surface of the buffer block, the cross-sectional area of the hole diameter of the first hole section is smaller than that of the second hole section, a first step surface is formed between the first hole section and the second hole section, the connecting column comprises a first connecting section and a second connecting section, one end of the first connecting section is connected to the BDU shell, the other end of the first connecting section is connected to the second connecting section, the cross-sectional area of the second connecting section is larger than that of the first connecting section, a second step surface is formed between the second connecting section and the first connecting section, the first connecting section is accommodated in the first hole section, the second connecting section is accommodated in the second hole section, the second step surface abuts against the first step surface and is located on the side of the first step surface away from the first hole section.

[0012] According to some embodiments of the present application, the connecting structure further comprises a buffer spring and a gasket, the BDU shell is provided with a connecting protrusion, the first connecting section is connected to the connecting protrusion, the buffer spring and the gasket are both sleeved on the outer circumferential side of the first connecting section, the gasket is located on the side of the buffer spring away from the connecting protrusion, one end of the buffer spring is connected to the connecting protrusion, the other end of the buffer spring is connected to the gasket, and the gasket is supported on the upper surface of the buffer block.

[0013] According to some embodiments of the present application, the connecting column and the BDU shell are integrally formed.

[0014] According to some embodiments of the present application, the bottom wall of the battery box body is provided with a fixed cross beam, and the buffer block is detachably mounted on the fixed cross beam.

[0015] According to some embodiments of the utility model, the battery box is internally provided with a fixed crossbeam, the fixed crossbeam and the bottom wall of the battery box define an accommodating space or the fixed crossbeam has an accommodating space, mounting holes are formed on the fixed crossbeam, the mounting holes are mounted with the buffer blocks, part of the buffer blocks is located above the fixed crossbeam and part of the buffer blocks is located in the accommodating space.

[0016] According to some embodiments of the utility model, a limiting groove is formed on the outer peripheral wall of the buffer block, the limiting groove extends along the circumference of the buffer block, and the inner wall of the mounting hole is accommodated in the limiting groove.

[0017] According to the vehicle of the second aspect of the utility model, the battery pack of the first aspect is used.

[0018] According to the vehicle of the utility model, the BDU unit of the battery pack is elastically connected with the battery box, the connection between the BDU unit and the battery box can be buffered, the noise generated by the BDU unit during operation can be reduced to the vehicle, and the comfort of the passengers in the vehicle is improved.

[0019] The additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be known by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0021] Figure 1 is the assembly schematic view of the BDU unit of the battery pack and the battery box according to some embodiments of the utility model;

[0022] Figure 2 is Figure 1 is the assembly sectional view of the BDU unit of the battery pack and the battery box in

[0023] Figure 3 is Figure 2 is the assembly sectional view of the buffer block in the battery pack and the battery box in

[0024] Figure 4 is Figure 1 is the assembly schematic view of the BDU unit and the connecting structure in

[0025] Figure 5 is Figure 1 is the three-dimensional schematic view of the buffer block in the battery pack in

[0026] REFERENCE SIGNS:

[0027] 1. battery box; 11. fixed crossbeam; 111. mounting hole; 12. accommodating space;

[0028] 2. BDU unit; 21. BDU shell;

[0029] 3. connecting structure; 31. buffer block; 311. connecting hole; 312. first hole section; 313. second hole section; 314. first step surface; 315. limiting recess; 32. buffer spring; 33. connecting column; 331. first connecting section; 332. second connecting section; 333. second step surface; 34. gasket; 35. connecting protrusion. DETAILED DESCRIPTION

[0030] Embodiments of the present application will be described in detail below, examples of which are shown in the drawings, wherein the same or similar reference signs represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0031] Reference will be made to Figures 1-5 A battery pack according to an embodiment of the present application is described below.

[0032] Reference is made to Figure 1 and Figure 2 A battery pack according to a first embodiment of the present application includes a battery box 1, a battery assembly, and a BDU unit 2. The battery assembly is arranged in the battery box 1 and includes a plurality of battery monomers. The BDU unit 2 is arranged in the battery box 1 and is elastically connected with the battery box 1. The battery assembly and the BDU unit 2 are arranged in the battery box 1, and the battery box 1 can protect the battery assembly and the BDU unit 2 to some extent, thereby reducing the possibility of damage to the battery assembly and the BDU unit 2 due to external impact.

[0033] The BDU unit 2 can control the on-off of the electrical connection between the battery pack and other components, thereby protecting the battery pack and improving the reliability and safety of the battery pack. For example, the BDU unit 2 includes a relay, which controls the on-off of the electrical connection between the battery pack and other components. When the battery pack fails, the relay can disconnect the electrical connection between the battery pack and other components, thereby avoiding safety hazards and improving the reliability and safety of the battery pack.

[0034] The BDU unit 2 is elastically connected with the battery box 1, which can buffer the connection between the BDU unit 2 and the battery box 1, and further can dampen the connection between the BDU unit 2 and the battery box 1, thereby reducing the influence of the vibration generated by the BDU unit 2 on the battery box 1 or the influence of the vibration of the battery box 1 on the BDU unit 2; and the BDU unit 2 is elastically connected with the battery box 1, which can weaken the propagation of the noise generated by the BDU unit 2 to the vehicle interior through the battery box 1, thereby reducing the noise in the vehicle interior and improving the user experience.

[0035] For example, the relay attraction of the BDU unit 2 generates certain vibration and noise when the BDU unit 2 works, and if the BDU unit 2 is fixedly connected with the battery box 1, the noise generated by the BDU unit 2 is easy to propagate to the vehicle interior through the battery box 1, thereby reducing the user experience; the BDU unit 2 is elastically connected with the battery box 1, which can weaken the propagation of the noise generated by the BDU unit 2 to the vehicle interior through the battery box 1, thereby reducing the noise in the vehicle interior and improving the user experience.

[0036] In the description of the utility model, the meaning of "multiple" is two or more than two.

[0037] According to the battery pack, the BDU unit 2 is elastically connected with the battery box 1, which can buffer the connection between the BDU unit 2 and the battery box 1, can reduce the noise generated by the BDU unit 2 when working to the vehicle interior, and improve the comfort of the people in the vehicle.

[0038] Referring to Figure 1 , Figure 2 and Figure 5 , according to some embodiments of the utility model, the connection structure 3 between the BDU unit 2 and the battery box 1 includes at least one of the buffer block 31 and the buffer spring 32. The buffer block 31 or the buffer spring 32 can buffer the connection between the BDU unit 2 and the battery box 1 under the action of its own elastic deformation, thereby reducing the influence of the vibration generated by the BDU unit 2 on the battery box 1; and the buffer block 31 or the buffer spring 32 connects the BDU unit 2 and the battery box 1, which can weaken the propagation of the noise generated by the BDU unit 2, thereby weakening the noise generated by the BDU unit 2 when working and propagating to the vehicle interior through the battery box 1, reducing the noise in the vehicle interior, and improving the user experience.

[0039] Optionally, the buffer block 31 is a rubber block.

[0040] For example, when the BDU unit 2 is working, a certain vibration and noise will be generated when the relay is attracted. The BDU unit 2 is connected with the battery box body 1 through the buffer block 31 or the buffer spring 32. The buffer block 31 or the buffer spring 32 can be compressed along the set track and direction to absorb and weaken the vibration and the propagation of the noise generated when the relay is attracted, thereby reducing the propagation of the noise generated when the BDU unit 2 is working to the vehicle interior through the battery box body 1, and weakening the propagation of the vibration generated when the BDU unit 2 is working to the vehicle interior through the battery box body 1.

[0041] With reference to Figure 1 , Figure 2 and Figure 4 , according to some embodiments of the present application, the connecting structure 3 comprises the buffer block 31 and the connecting column 33. The buffer block 31 is installed on the battery box body 1. The BDU unit 2 comprises a BDU body and a BDU shell 21. The BDU body is arranged in the BDU shell 21. The connecting column 33 is arranged on the BDU shell 21. The connecting column 33 is connected with the buffer block 31. The BDU shell 21 can protect the BDU body to some extent, and can reduce the possibility of damage to the BDU body caused by external impact, thereby prolonging the service life of the BDU body. The connecting column 33 and the buffer block 31 are connected to achieve elastic connection between the BDU shell 21 and the battery box body 1, thereby allowing the buffer block 31 to buffer the connection between the BDU unit 2 and the battery box body 1, to reduce the influence of the vibration generated when the BDU unit 2 is working on the battery box body 1, and to weaken the propagation of the noise generated when the BDU unit 2 is working to the vehicle interior through the battery box body 1.

[0042] With reference to Figure 4 and Figure 5 , according to some embodiments of the present application, the buffer block 31 is provided with a connecting hole 311. The connecting column 33 is plug-in arranged in the connecting hole 311. The connecting hole 311 can facilitate the assembly between the connecting column 33 and the buffer block 31, and can make the overall structure of the connecting column 33 and the buffer block 31 compact. In addition, the connecting column 33 is plug-in arranged in the connecting hole 311, which can realize the plug-in connection between the connecting column 33 and the buffer block 31, so that the connection between the buffer block 31 and the connecting column 33 is simple and has strong stability. The plug-in connection of the connecting column 33 and the connecting hole 311 can also facilitate the assembly or disassembly between the connecting column 33 and the buffer block 31, thereby improving the assembly or disassembly efficiency of the connecting column 33 and the buffer block 31.

[0043] With reference to Figure 2 , Figure 4 and Figure 5According to some embodiments of the utility model, connecting structure 3 still includes buffer spring 32 and gasket 34, BDU shell 21 is equipped with connecting lug 35, connecting column 33 is connected to connecting lug 35, connecting lug 35 can be convenient for connecting column 33 to be fixed on BDU shell 21, buffer spring 32 and gasket 34 are all set up in the outer circumferential side of connecting column 33, gasket 34 is located the side of buffer spring 32 away from connecting lug 35, one end of buffer spring 32 is connected with connecting lug 35, the other end of buffer spring 32 is connected with gasket 34, gasket 34 is supported on the upper surface of buffer block 31, connecting lug 35 can be convenient for buffer spring 32 to be fixed, buffer spring 32 and gasket 34 are all set up in the outer circumferential side of connecting column 33, can play the guiding effect to the compression or recovery of buffer spring 32, ensure that buffer spring 32 compresses or recovers along the set track and direction.

[0044] Gasket 34 is supported on the upper surface of buffer block 31, and buffer block 31 can support and fix gasket 34. Gasket 34 can also increase the contact area between buffer spring 32 and buffer block 31, so that the stress between buffer spring 32 and buffer block 31 is more uniform, reducing the possibility of failure of buffer spring 32 due to excessive local pressure. By connecting one end of buffer spring 32 to connecting lug 35, connecting gasket 34 to the other end of buffer spring 32, and supporting gasket 34 on the upper surface of buffer block 31, elastic connection between buffer block 31 and connecting lug 35 can be achieved, thereby achieving elastic connection between BDU unit 2 and battery box 1, and further reducing the propagation of noise and vibration generated by BDU unit 2 to battery box 1.

[0045] For example, when BDU unit 2 is working, buffer spring 32 can be compressed in the axial direction of connecting column 33, which can reduce the propagation of vibration and noise generated by BDU unit 2 to battery box 1. In addition, gasket 34 is supported on the upper surface of buffer block 31, and the elastic deformation of buffer block 31 itself can further reduce the propagation of noise and vibration generated by BDU unit 2 to battery box 1.

[0046] For example, gasket 34 can be a metal gasket 34, which can make the structural strength of gasket 34 relatively strong.

[0047] Reference Figure 2According to some embodiments of the utility model, connecting hole 311 includes first hole section 312 and second hole section 313, first hole section 312 is located at the side of second hole section 313 close to BDU unit 2 and first hole section 312 penetrates the upper surface of buffer block 31, first hole section 312 penetrates the upper surface of buffer block 31, can be convenient for connecting column 33 to insert into connecting hole 311. The cross-sectional area of first hole section 312 is less than the cross-sectional area of second hole section 313, first step surface 314 is formed between first hole section 312 and second hole section 313, connecting column 33 includes first connecting section 331 and second connecting section 332, one end of first connecting section 331 is connected with BDU shell 21, the other end of first connecting section 331 is connected with second connecting section 332, the cross-sectional area of second connecting section 332 is greater than the cross-sectional area of first connecting section 331, can be convenient for second connecting section 332 to insert into second hole section 313 and be accommodated in second hole section 313, further improve the convenience of connecting column 33 assembly on buffer block 31.

[0048] Second step surface 333 is formed between second connecting section 332 and first connecting section 331, first connecting section 331 is accommodated in first hole section 312, second connecting section 332 is accommodated in second hole section 313, second step surface 333 abuts against first step surface 314 and second step surface 333 is located at the side of first step surface 314 away from first hole section 312. First connecting section 331 is accommodated in first hole section 312, second connecting section 332 is accommodated in second hole section 313, can make the structure of connecting column 33 and buffer block 31 compact. Second step surface 333 abuts against first step surface 314 can make the connection mode between connecting column 33 and buffer block 31 simple and have strong stability, through the cooperation between first step surface 314 and second step surface 333, can ensure the assembly position between connecting column 33 and buffer block 31 accurate.

[0049] And, because the cross-sectional area of first hole section 312 is less than the cross-sectional area of second hole section 313, second step surface 333 abuts against first step surface 314 and second step surface 333 is located at the side of first step surface 314 away from first hole section 312, can limit the second connecting section 332, reduce the possibility of second connecting section 332 moving in the direction towards first hole section 312, further can prevent connecting column 33 from coming out of connecting hole 311, be favorable to strengthen the stability of the connection between connecting column 33 and buffer block 31, can enhance the stability of the connection between BDU unit 2 and battery box 1.

[0050] Referring to Figure 2 And Figure 5According to some embodiments of the utility model, connecting structure 3 still includes buffer spring 32 and gasket 34, BDU shell 21 is equipped with connecting lug 35, first connecting section 331 is connected to connecting lug 35, buffer spring 32 and gasket 34 are all set to the outer circumferential side of first connecting section 331, gasket 34 is located the side of buffer spring 32 away from connecting lug 35, one end of buffer spring 32 is connected with connecting lug 35, the other end of buffer spring 32 is connected with gasket 34, and gasket 34 is supported on the upper surface of buffer block 31. Connecting lug 35 can facilitate the fixation of first connecting section 331 on BDU shell 21. Since one end of first connecting section 331 is connected with connecting lug 35, and the other end of first connecting section 331 is connected with second connecting section 332, and first connecting section 331 is accommodated in first hole section 312, and second connecting section 332 is accommodated in second hole section 313, the connection between BDU shell 21 and buffer block 31 can have strong stability.

[0051] Moreover, buffer spring 32 and gasket 34 are all set to the outer circumferential side of first connecting section 331, one end of buffer spring 32 is connected with connecting lug 35, the other end of buffer spring 32 is connected with gasket 34, and gasket 34 is supported on the upper surface of buffer block 31, so that on the basis of the stable connection between BDU shell 21 and buffer block 31, elastic connection between BDU shell 21 and buffer block 31 is realized.

[0052] For example, when BDU unit 2 is working, the vibration and noise generated by BDU unit 2 are first propagated to buffer spring 32, and buffer spring 32 can play a preliminary buffering role on the vibration and noise generated by BDU unit 2 due to its elastic deformation, so as to preliminarily weaken the vibration and noise generated by BDU unit 2; when the vibration and noise generated by BDU unit 2 are propagated to buffer block 31 through gasket 34, buffer block 31 can play a further buffering role on the vibration and noise generated by BDU unit 2 due to its elastic deformation, so as to further weaken the vibration and noise generated by BDU unit 2, finally weaken the propagation of the noise generated by BDU unit 2 to the vehicle interior through battery box body 1, and improve the user experience.

[0053] For example, the assembly process of connecting column 33 on buffer block 31 can be that connecting column 33 is inserted into connecting hole 311 in the direction towards second hole section 313, so that second connecting section 332 is inserted into second hole section 313, first connecting section 331 is accommodated in first hole section 312, and gasket 34 is supported on the upper surface of buffer block 31, and the assembly process of connecting column 33 on buffer block 31 is completed.

[0054] Referring to Figure 2 and Figure 5According to some embodiments of the present application, the connecting column 33 and the BDU shell 21 are integrally formed, so that the structural strength of the connecting column 33 and the BDU shell 21 as a whole can be improved, and the assembly process between the connecting column 33 and the BDU shell 21 can be omitted.

[0055] For example, the connecting column 33 and the BDU shell 21 are integrally injection molded.

[0056] With reference to Figure 1 , Figure 3 and Figure 4 According to some embodiments of the present application, the bottom wall of the battery box 1 is provided with a fixed cross beam 11, and the buffer block 31 is detachably mounted on the fixed cross beam 11. The fixed cross beam 11 can serve as a fixing and supporting function for the buffer block 31. When the buffer block 31 is connected to the connecting column 33, the buffer block 31 is mounted on the fixed cross beam 11, and the fixed cross beam 11 can serve as a supporting function for the buffer block 31 and the BDU unit 2. In addition, the buffer block 31 is detachably mounted on the fixed cross beam 11, which can facilitate the maintenance or replacement of the buffer block 31.

[0057] Alternatively, the BDU unit 2 and the buffer block 31 can be pre-assembled into a whole, and then the BDU unit 2 and the buffer block 31 can be assembled on or detached from the fixed cross beam 11, which can reduce the mounting or detaching steps between the BDU unit 2 and the fixed cross beam 11, thereby improving the mounting or detaching efficiency of the BDU unit 2 on the battery box 1.

[0058] With reference to Figures 1-3 According to some embodiments of the present application, the fixed cross beam 11 is arranged in the battery box 1, and the fixed cross beam 11 and the bottom wall of the battery box 1 define a containing space 12 or the fixed cross beam 11 has the containing space 12 therein. The fixed cross beam 11 is formed with a mounting hole 111, the buffer block 31 is mounted in the mounting hole 111, and part of the buffer block 31 is located above the fixed cross beam 11 and part of the buffer block 31 is located in the containing space 12. The mounting hole 111 can facilitate the installation of the buffer block 31 on the fixed cross beam 11, and part of the buffer block 31 located in the containing space 12 can make the structure of the buffer block 31 and the fixed cross beam 11 compact. The mounting hole 111 can also serve as a positioning function for the installation of the buffer block 31 on the fixed cross beam 11, ensuring the accurate assembly position of the buffer block 31 on the fixed cross beam 11. In addition, part of the buffer block 31 located above the fixed cross beam 11 can facilitate the connection of the buffer block 31 and the connecting column 33, thereby facilitating the assembly of the BDU unit 2 on the fixed cross beam 11.

[0059] With reference to Figure 3 and Figure 4According to some embodiments of the utility model, the outer peripheral wall of the buffer block 31 is formed with a limiting groove 315, the limiting groove 315 extends along the circumference of the buffer block 31, and the inner wall of the mounting hole 111 is accommodated in the limiting groove 315. The limiting groove 315 can limit the assembly between the buffer block 31 and the fixed cross beam 11, reducing the possibility of relative movement between the buffer block 31 and the fixed cross beam 11. Moreover, the inner wall of the mounting hole 111 is accommodated in the limiting groove 315, which can realize the clamping connection between the buffer block 31 and the fixed cross beam 11, so that the connection mode between the buffer block 31 and the fixed cross beam 11 is simple and has strong stability, and the overall structure of the buffer block 31 and the fixed cross beam 11 is compact.

[0060] Referring to Figure 1 According to the vehicle of the second aspect of the utility model, the BDU unit 2 of the battery pack and the battery box 1 are elastically connected, which can buffer the connection between the BDU unit 2 and the battery box 1, reduce the noise generated by the BDU unit 2 during operation and transmit to the vehicle, and improve the comfort of the passengers in the vehicle.

[0061] According to the vehicle of the second aspect of the utility model, the BDU unit 2 of the battery pack and the battery box 1 are elastically connected, which can buffer the connection between the BDU unit 2 and the battery box 1, reduce the noise generated by the BDU unit 2 during operation and transmit to the vehicle, and improve the comfort of the passengers in the vehicle.

[0062] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0063] In the description of the utility model, "first feature" and "second feature" can include one or more features.

[0064] In the description of the utility model, "above" or "below" the first feature in the second feature can include direct contact of the first and second features, or can include indirect contact of the first and second features through another feature between them.

[0065] In the description of the utility model, "above", "above" and "above" of the first feature in the second feature include the first feature directly above and obliquely above the second feature, or only indicate that the first feature is higher than the second feature in horizontal height.

[0066] In the description of the present specification, the description referring to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0067] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A battery pack, characterized by, include: Battery housing; A battery assembly is disposed within the battery housing and includes multiple individual battery cells; The BDU unit is located inside the battery box and is elastically connected to the battery box.

2. The battery pack of claim 1, wherein, The connection structure between the BDU unit and the battery box includes at least one of a buffer block and a buffer spring.

3. The battery pack of claim 2, wherein, The connection structure includes a buffer block and a connecting post. The buffer block is installed in the battery box. The BDU unit includes a BDU body and a BDU housing. The BDU body is located inside the BDU housing. The connecting post is located on the BDU housing and is connected to the buffer block.

4. The battery pack of claim 3, wherein, The buffer block is provided with a connection hole, and the connecting post can be plugged into the connection hole.

5. The battery pack of claim 4, wherein, The connection structure also includes a buffer spring and a washer. The BDU housing is provided with a connecting protrusion. The connecting post is connected to the connecting protrusion. The buffer spring and the washer are both sleeved on the outer periphery of the connecting post. The washer is located on the side of the buffer spring away from the connecting protrusion. One end of the buffer spring is connected to the connecting protrusion, and the other end of the buffer spring is connected to the washer. The washer is supported on the upper surface of the buffer block.

6. The battery pack of claim 4, wherein, The connecting hole includes a first segment and a second segment. The first segment is located on the side of the second segment closer to the BDU unit and penetrates the upper surface of the buffer block. The cross-sectional area of ​​the first segment is smaller than that of the second segment. A first stepped surface is formed between the first segment and the second segment. The connecting post includes a first connecting segment and a second connecting segment. One end of the first connecting segment is connected to the BDU housing, and the other end of the first connecting segment is connected to the second connecting segment. The cross-sectional area of ​​the second connecting segment is larger than that of the first connecting segment. A second stepped surface is formed between the second connecting segment and the first connecting segment. The first connecting segment is accommodated in the first segment, and the second connecting segment is accommodated in the second segment. The second stepped surface abuts against the first stepped surface and is located on the side of the first stepped surface away from the first segment.

7. The battery pack of claim 6, wherein, The connection structure also includes a buffer spring and a washer. The BDU housing is provided with a connecting protrusion. The first connecting segment is connected to the connecting protrusion. The buffer spring and the washer are both sleeved on the outer periphery of the first connecting segment. The washer is located on the side of the buffer spring away from the connecting protrusion. One end of the buffer spring is connected to the connecting protrusion, and the other end of the buffer spring is connected to the washer. The washer is supported on the upper surface of the buffer block.

8. The battery pack of claim 3, wherein, The connecting column is integrally formed with the BDU housing; and / or, the bottom wall of the battery box is provided with a fixed crossbeam, and the buffer block is detachably installed on the fixed crossbeam.

9. The battery pack of claim 3, wherein, The battery box is internally provided with a fixed cross beam, the fixed cross beam and the bottom wall of the battery box define an accommodating space or the fixed cross beam has an accommodating space, the fixed cross beam is formed with a mounting hole, the buffer block is mounted in the mounting hole, part of the buffer block is located above the fixed cross beam and part of the buffer block is located in the accommodating space. Wherein, a limiting groove is formed on the outer peripheral wall of the buffer block, the limiting groove extends along the circumference of the buffer block, and the inner wall of the mounting hole is accommodated in the limiting groove.

10. A vehicle characterized by comprising: Comprise: The battery pack according to any one of claims 1-9.

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