Battery structure and electric vehicle

Abstract

The utility model discloses a battery structure and an electric vehicle, and relates to the technical field of vehicles, the battery structure comprises a shell, a battery assembly, a battery management module and a boost module; a cavity is formed in the shell, and a first mounting space and a second mounting space are formed in the cavity; the battery assembly is arranged in the first mounting space, the battery assembly comprises a plurality of stacked battery monomers, and the battery monomers are connected in series; the battery management module is arranged in the second mounting space, and the battery management module is electrically connected with the battery assembly; the input end of the boosting module is electrically connected with the battery management module, and the output end of the boosting module is used for being electrically connected with a power component. According to the technical scheme provided by the invention, the internal layout can be optimized, the installation of each module is more convenient, and the assembly time is reduced; and meanwhile, by reducing the connection complexity of the battery assembly, the space utilization rate is improved, and the thermal runaway risk caused by a large number of single batteries and complex connection is also reduced.

Description

Technical Field

[0001] This application relates to the field of transportation technology, and in particular to a battery structure and an electric vehicle. Background Technology

[0002] In recent years, the battery swapping market for two-wheeled electric vehicles has shown a rapid growth trend. However, existing lithium battery packs for two-wheeled electric vehicles have many problems. For example, the conventional PACK process structure (the process structure of assembling cells into a battery pack) has problems such as low space utilization and high risk of thermal runaway due to the large number of cells connected in parallel. In addition, the assembly process is complicated and the assembly time is high. Utility Model Content

[0003] The main purpose of this application is to propose a battery structure that aims to solve the problems of low space utilization, easy thermal runaway, and cumbersome assembly work in existing battery structures.

[0004] To achieve the above objectives, the battery structure proposed in this application includes:

[0005] The housing has an interior cavity forming a first mounting space and a second mounting space.

[0006] A battery assembly, wherein the battery assembly is disposed within the first installation space, the battery assembly comprising a plurality of stacked battery cells connected in series with the battery cells;

[0007] A battery management module is located within the second installation space and is electrically connected to the battery assembly.

[0008] A boost module, the input of which is electrically connected to the battery management module, and the output of which is electrically connected to the power component.

[0009] In one embodiment, the battery assembly further includes a plurality of conductive elements, one end of which is connected to a battery cell via a locking structure, and the other end of which is connected to another battery cell via a locking structure, so that all battery cells are connected in series.

[0010] In one embodiment, the locking structure includes a connecting post and a clamping nut disposed on the battery cell, the conductive element having a connecting hole through which the connecting post passes, and the clamping nut being threadedly connected to the connecting post. The clamping nut is used to press the conductive element against the outer surface of the battery cell; and / or,

[0011] The outer surface of the battery assembly is provided with a shock-absorbing layer; and / or,

[0012] A buffer adhesive layer is provided between the individual battery cells.

[0013] In one embodiment, the battery structure further includes a limiting component, the limiting component including a first clamping member abutting against the top of the battery assembly; and / or,

[0014] The limiting component includes a second clamping member that abuts against the top of the battery assembly. The first clamping member and the second clamping member are respectively disposed on both sides of the top of the battery assembly, and the first clamping member and the second clamping member are detachably connected to the side wall of the housing.

[0015] In one embodiment, the first clamping member includes a first vertical portion and a first horizontal portion, the first vertical portion being detachably connected to the side wall of the housing, and the first horizontal portion abutting against the top of the battery assembly; and / or,

[0016] The second clamping member includes a second vertical part and a second horizontal part. The second vertical part is detachably connected to the side wall of the housing, and the second horizontal part abuts against the top of the battery assembly.

[0017] In one embodiment, the housing includes a lower box and a cover, the lower box having an opening, and the cover covering the opening; the lower box and the cover surround to form the cavity, and the lower box and the cover are detachably connected.

[0018] In one embodiment, the lower housing is provided with a partition for dividing the interior of the lower housing into a first installation space and a second installation space. The partition has a groove on the side facing the second installation space, and the battery management module is located in the groove. The battery management module is detachably connected to the groove.

[0019] In one embodiment, a sealing strip is provided around the connection between the lower housing and the cover.

[0020] In one embodiment, the housing is provided with a charging interface, and the battery assembly is electrically connected to the charging interface; and / or,

[0021] The cover is provided with a handle structure; and / or,

[0022] The housing is also provided with a discharge socket, which is connected to the boost module; and / or,

[0023] The housing is also equipped with a power display screen, which is electrically connected to the battery management module; and / or,

[0024] The housing is also equipped with a low-voltage switch, which is electrically connected to the battery management module.

[0025] This application also proposes an electric vehicle including the battery structure described above.

[0026] The technical solution of this application optimizes the internal layout of the battery structure by dividing the interior of the casing into a first installation space and a second installation space. The first and second installation spaces are used to install the battery pack and the battery management module, respectively, making the overall installation more convenient and reducing assembly time. Furthermore, the battery pack uses several stacked battery cells connected in series to form an electrical connection, simplifying the assembly operation. Simultaneously, the use of a boost module allows the battery pack to be in a lower voltage state, with the boost module raising the voltage to a level suitable for electric vehicles. This controls the number of battery cells, reduces the complexity of battery pack connections, improves the space utilization of the battery structure, and avoids or reduces the risk of thermal runaway caused by a large number of cells and complex connections. In addition, since the input terminal of the boost module is electrically connected to the battery management module, the battery management module can monitor the status of the battery pack in real time and adjust the battery's operating state accordingly, effectively preventing thermal runaway. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0028] Figure 1 A schematic diagram of an embodiment of the battery structure provided in this application;

[0029] Figure 2 A schematic diagram of the battery assembly, battery management module, and boost module according to an embodiment of the battery structure provided in this application;

[0030] Figure 3 A schematic diagram of the battery assembly and battery management module structure according to an embodiment of the battery structure provided in this application;

[0031] Figure 4 This is a schematic diagram of the internal structure of an embodiment of the battery structure provided in this application.

[0032] Explanation of icon numbers:

[0033] 1. Shell; 11. Lower housing; 111. Partition; 112. First installation space; 113. Second installation space; 12. Cover; 13. Charging interface; 14. Handle structure; 15. Discharge socket; 16. Power display screen; 17. Low voltage switch; 2. Battery assembly; 21. Battery cell; 22. Locking structure; 221. Connecting post; 222. Compression nut; 3. Battery management module; 4. Boost module; 41. Power connection socket; 5. Conductive component; 6. Limiting component; 61. First clamping component; 62. Second clamping component; 7. Shock-absorbing layer; 8. Packing strap; 9. Sealing strip.

[0034] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0036] It should be noted that if the embodiments of this application 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.

[0037] Furthermore, if the embodiments of this application 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 that simultaneously satisfies A and B. 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 in this application.

[0038] In recent years, the battery swapping market for two-wheeled electric vehicles has shown a rapid growth trend. However, existing lithium battery packs for two-wheeled vehicles have many problems. For example, the conventional PACK process structure (the process structure of assembling cells into a battery pack) has problems such as low space utilization and high risk of thermal runaway due to the large number of cells connected in parallel. In addition, the PACK process is complicated and the assembly time is high.

[0039] To address the aforementioned problems, this application proposes a battery structure.

[0040] Please see Figures 1 to 4 In one embodiment of this application, the battery structure includes a housing 1, a battery assembly 2, a battery management system (BMS) 3, and a boost module 4. The housing 1 has an internal cavity, forming a first mounting space 112 and a second mounting space 113. The battery assembly 2 is disposed in the first mounting space 112 and includes a plurality of stacked battery cells 21 connected in series. The battery management system 3 is disposed in the second mounting space 113 and is electrically connected to the battery assembly 2. The input terminal of the boost module 4 is electrically connected to the battery management system 3, and the output terminal of the boost module 4 is used to electrically connect to a power component.

[0041] In the above structure, the interior of the housing 1 is divided into a first installation space 112 and a second installation space 113, which are used to install the battery assembly 2 and the battery management module 3, respectively. This optimizes the internal layout of the battery structure, making the overall installation more convenient and reducing assembly time. Furthermore, the battery assembly 2 uses several stacked battery cells 21 connected in series, simplifying the assembly process. Simultaneously, the use of the boost module 4 in conjunction with the battery assembly 2 allows the voltage to be boosted to a suitable level for electric vehicles from a lower voltage state. This controls the number of battery cells 21, reduces the connection complexity of the battery assembly 2, improves the space utilization of the battery structure, and avoids or reduces the risk of thermal runaway due to a large number of cells and complex connections. Additionally, since the input of the boost module 4 is electrically connected to the battery management module 3, the battery management module 3 can monitor the status of the battery assembly 2 in real time and adjust the battery's operating state accordingly, effectively preventing thermal runaway.

[0042] The battery management module 3 can monitor the status of battery component 2 in real time, including parameters such as voltage, current, and temperature. It can precisely manage the charging and discharging of battery component 2, extending its lifespan and optimizing its performance. The electrical connection between the battery management module 3 and the boost module 4 allows the battery management module 3 to adjust its output voltage to match the voltage requirements of the electric vehicle's power components, ensuring the battery system operates at its optimal state, extending battery life, and improving system efficiency. After being boosted by the boost module 4, battery component 2 is electrically connected to the electric vehicle's power components, ensuring efficient operation and compatibility of the battery system. This allows the output voltage of battery component 2 to be directly connected to the power components after adjustment by the boost module 4, thus meeting the power requirements of the electric vehicle. For example, in this battery structure, the boost module 4 specifically uses an automotive-grade DC-DC converter, which complies with stringent electromagnetic compatibility (EMC) and environmental adaptability standards. The automotive-grade DC-DC converter boasts a conversion efficiency of up to 95%, ensuring efficient energy transfer, reducing energy loss, and improving overall system efficiency. Therefore, using automotive-grade DC-DC boost converters not only improves the performance and reliability of the battery system, but also ensures its efficient operation under various working conditions.

[0043] In one embodiment, the battery assembly 2 further includes several conductive elements 5. One end of each conductive element 5 is connected to a battery cell 21 via a locking structure 22, and the other end of each conductive element 5 is connected to another battery cell 21 via the locking structure 22, so that all battery cells 21 are connected in series. In the above structure, the battery assembly 2 includes several stacked battery cells 21, and each battery cell 21 is connected in series with the conductive elements 5. Both ends of the conductive elements 5 are connected to adjacent battery cells 21 via locking structures 22 (such as bolts, nuts, or dedicated locking devices). The mechanical fixing effect of the locking structures 22 ensures tight contact between the conductive elements 5 and the battery cells 21, thereby achieving a stable electrical connection. Compared with traditional welding processes, the locking structures 22 provide higher connection strength and stability, effectively resisting mechanical vibration and impact, and reducing the risk of loosening at connection points. Using standardized locking structures 22 makes the assembly process simpler and faster, reduces connection errors caused by improper welding operations, and significantly improves assembly efficiency. In addition, the locking structure 22 reduces the problem of local overheating caused by excessive contact resistance. At the same time, in conjunction with the real-time monitoring of the battery management module 3, it can detect and handle abnormalities in a timely manner, effectively reducing the risk of thermal runaway.

[0044] In one embodiment, the locking structure 22 includes a connecting post 221 and a clamping nut 222 disposed on the battery cell 21. The conductive element 5 has a connecting hole through which the connecting post 221 passes. The clamping nut 222 is threadedly connected to the connecting post 221, and the clamping nut 222 is used to press the conductive element 5 against the outer surface of the battery cell 21. In the above structure, by providing a connecting post 221 on each battery cell 21 for connection with the conductive element 5; by providing a connecting hole on the conductive element 5 through which the connecting post 221 passes, the electrical connection between the conductive element 5 and the battery cell 21 is ensured; the clamping nut is threadedly connected to the connecting post 221, and by tightening the clamping nut 222, the conductive element 5 is firmly pressed against the outer surface of the battery cell 21, thereby achieving stable mechanical fixation and electrical connection. The tightening force of the clamping nut 222 ensures a tight contact between the conductive component 5 and the battery cell 21, preventing the connection point from loosening even under vibration or impact conditions. The conductive component 5 forms a stable electrical connection with the battery cell 21 through the clamping action of the clamping nut 222, reducing contact resistance and improving current conduction efficiency. The tight contact between the conductive component 5 and the battery cell 21 facilitates heat conduction and optimizes the heat dissipation performance of the battery assembly 2.

[0045] In one embodiment, the battery structure further includes a limiting component 6, which includes a first clamping member 61 that abuts against the top of the battery assembly 2. In the above structure, the battery assembly 2 is installed in the first mounting space 112 of the housing 1, and the first clamping member 61 is placed on top of the battery assembly 2, abutting against the top of the battery assembly 2. The first clamping member 61 is fixed to the housing 1 using bolts or other fasteners, applying downward pressure to the battery assembly 2 to prevent the battery cells 21 from loosening due to vibration or impact during use. Furthermore, if it is necessary to replace the battery cells 21 or maintain the battery assembly 2, the first clamping member 61 can be removed simply by loosening the bolts, simplifying the assembly and maintenance process.

[0046] In one embodiment, the limiting component 6 includes a second clamping member 62, which abuts against the top of the battery assembly 2. A first clamping member 61 and a second clamping member 62 are respectively located on both sides of the top of the battery assembly 2, and are detachably connected to the sidewalls of the housing 1. In the above structure, the limiting component 6 includes a first clamping member 61 and a second clamping member 62, respectively located on both sides of the top of the battery assembly 2. Both the first clamping member 61 and the second clamping member 62 abut against the top of the battery assembly 2, jointly providing clamping and limiting functions, making the position of the battery assembly 2 within the housing 1 more stable and enhancing the mechanical stability of the entire battery structure.

[0047] In one embodiment, the first clamping member 61 includes a first vertical portion and a first horizontal portion. The first vertical portion is detachably connected to the side wall of the housing 1, and the first horizontal portion abuts against the top of the battery assembly 2. The second clamping member 62 includes a second vertical portion and a second horizontal portion. The second vertical portion is detachably connected to the side wall of the housing 1, and the second horizontal portion abuts against the top of the battery assembly 2. In the above structure, the first vertical portion is fixed to the side wall of the housing 1 by a detachable connection, such as a bolt connection; the first horizontal portion abuts against the top of the battery assembly 2, thus providing a clamping effect. Similarly, the second vertical portion is fixed to the side wall of the housing 1 by a detachable connection, such as a bolt connection; the second horizontal portion abuts against the top of the battery assembly 2, thus providing a clamping effect.

[0048] In one embodiment, a shock-absorbing layer 7 is provided on the outer surface of the battery assembly 2. Specifically, the shock-absorbing layer 7 is made of EVA (ethylene-vinyl acetate copolymer), which not only improves the shock resistance of the battery assembly 2 but also enhances the safety and reliability of the system. EVA material has good cushioning and insulation properties, thus protecting the battery assembly 2.

[0049] In one embodiment, a buffer adhesive layer is provided between the battery cells 21. Specifically, the buffer adhesive layer is made of double-sided adhesive-backed cushioning cotton, which not only improves the shock resistance and stability of the battery assembly 2, but also enhances the safety and reliability of the system. The double-sided adhesive-backed cushioning cotton has good cushioning, adhesion, and insulation properties, effectively absorbing vibration and impact while providing reliable fixation and insulation protection.

[0050] In one embodiment, the housing 1 includes a lower housing 11 and a cover 12. The lower housing 11 has an opening, and the cover 12 covers the opening. The lower housing 11 and the cover 12 surround each other to form a cavity, and the lower housing 11 and the cover 12 are detachably connected. In the above structure, the housing 1 adopts a split design of the lower housing 11 and the cover 12. The lower housing 11 has an opening, and the cover 12 covers the opening. The lower housing 11 and the cover 12 surround each other to form a cavity and are fixed by a detachable connection. This not only improves the assembly and maintenance efficiency of the battery structure but also enhances the overall sealing and reliability. Specifically, components such as the battery assembly 2, the battery management module 3, and the boost module 4 are installed in the first mounting space 112 and the second mounting space 113 of the lower housing 11. The cover 12 is placed over the opening of the lower housing 11 and fixed by bolts or other fasteners to ensure the sealing and stability of the housing 1.

[0051] In one embodiment, a partition 111 is provided inside the lower housing 11 to divide the interior of the lower housing 11 into a first installation space 112 and a second installation space 113. A groove is provided on the side of the partition 111 facing the second installation space 113, and the battery management module 3 is located within this groove and is detachably connected to the groove. In the above structure, the partition 111 inside the lower housing 11 divides the interior of the lower housing 11 into the first installation space 112 and the second installation space 113. A groove is provided on the side of the partition 111 facing the second installation space 113, and the battery management module 3 is located within this groove and fixed by a detachable connection. The partition 111 rationally divides the interior space of the lower housing 11, ensuring that the battery assembly 2 and the battery management module 3 each have independent installation space, avoiding space waste. This not only optimizes the spatial layout but also improves the installation stability and maintenance convenience of the battery management module 3. In addition, the separator 111 can effectively isolate the direct contact between the battery cell and the battery management module 3, reduce the mutual transfer of heat, and thus improve the safety and stability of the battery system.

[0052] In one embodiment, a sealing strip 9 is provided around the connection between the lower housing 11 and the cover 12. In the above structure, the sealing strip 9 provided around the connection between the lower housing 11 and the cover 12 can effectively improve the sealing performance of the housing 1, prevent dust, moisture and other impurities from entering the cavity, and protect the internal components from the influence of the external environment.

[0053] In one embodiment, the housing 1 is provided with a charging interface 13, and the battery assembly 2 is electrically connected to the charging interface 13. The electrical interface is located on the outer surface of the housing 1 for easy user operation. The charging interface 13 adopts an automotive-grade design, possessing current carrying capacity and electrical insulation performance that meet production standards. The interface type of the charging interface 13 can be customized according to the needs of different charging devices, such as common round plugs, rectangular plugs, or other dedicated interfaces.

[0054] In one embodiment, the cover 12 is provided with a handle structure 14. In the above structure, the handle structure 14 is located on the outer surface of the cover 12, making it easy for the user to grip, which not only improves the portability and ease of operation of the battery pack, but also enhances the overall user experience and safety. Furthermore, the handle structure 14 can be a one-piece design, made of the same material as the cover 12, or it can be a separate handle component, installed on the cover 12 by bolts or other fixing methods.

[0055] In one embodiment, the housing 1 is further provided with a discharge socket 15, which is connected to the boost module 4. In the above structure, the discharge socket 15 on the housing 1 is used to connect the power components, ensuring that the battery pack can efficiently and safely provide power to electric vehicles or other equipment. This not only improves the compatibility and versatility of the battery pack but also enhances the safety and reliability of the system. The input end of the boost module 4 can be provided with a power connector 41. The power connector 41 is used in conjunction with the discharge socket 15 to achieve electrical connection, allowing users to easily connect and disconnect the battery pack 2 and the boost module 4, so as to replace the boost module 4 with different specifications as needed.

[0056] In one embodiment, the housing 1 is further provided with a power display screen 16, which is electrically connected to the battery management module 3. The power display screen 16 on the housing 1, which is electrically connected to the battery management module 3, is used to display the remaining power information of the battery pack in real time, improving the user's intuitive understanding of the battery status.

[0057] In one embodiment, the housing 1 is further provided with a low-voltage switch 17, which is electrically connected to the battery management module 3. In this structure, the low-voltage switch 17, electrically connected to the battery management module 3, can be used to start or stop the battery system, enter a sleep mode, and reduce the self-discharge of the battery system in an idle state.

[0058] For example, the size of the housing 1 can be 360mm×226mm×130mm, which conforms to the common 60V50Ah plastic housing size on the market. The housing 1 is made of high-strength carbon steel, and the surface paint uses a frosted process to improve the product's appearance and reduce the risk of scratches. A sealing strip 9 is provided around the connection between the lower box 11 and the cover 12 of the housing 1 to ensure waterproofing, dustproofing, and improve sealing performance. The battery assembly 21 uses 110Ah, 3.65V battery cells 21, specifically ternary lithium batteries; eight battery cells 21 are connected in series, resulting in a total voltage of 29.2V for the battery cells 21; the battery cells 21 are stacked and connected in series via conductive components 5 (such as copper busbars) and locking structures 22 (such as bolts); side pressure plates can also be added to limit and insulate the sides of the battery cells 21, ensuring the stability and safety of the battery cells 21 within the housing 1; and PET (polyethylene terephthalate) strapping 8 is used to bundle the battery assembly 2, further enhancing its stability; the housing 1 contains... The cavity is internally formed with a first mounting space 112 and a second mounting space 113. The first mounting space 112 is used to install the battery pack 2, and the second mounting space 113 is used to install the battery management module 3 to ensure that both the battery pack 2 and the battery management module 3 have good heat dissipation performance. The battery management module 3 is electrically connected to the battery pack 2 and the boost module 4 through a connecting wire to achieve precise monitoring and control. The boost module 4 boosts the voltage of the battery pack 2 from 29.2V to 60V to meet the needs of the electric vehicle's power components. The input end of the boost module 4 is electrically connected to the battery management module 3, and the output end is electrically connected to the power components through a discharge socket 15.

[0059] The technical solution of this application divides the interior of the housing 1 into a first installation space 112 and a second installation space 113. The first installation space 112 and the second installation space 113 are used to install the battery module 2 and the battery management module 3, respectively, to optimize the internal layout of the battery structure, making the installation of the overall structure more convenient and reducing assembly time. In addition, the battery module 2 uses several stacked battery cells 21 connected in series to form an electrical connection, which simplifies the assembly operation of the battery module 2. At the same time, the use of the boost module 4 in conjunction with the battery module 2 allows the battery module 2 to boost the voltage to a voltage level suitable for electric vehicles from a lower voltage state, thereby controlling the number of battery cells 21, reducing the connection complexity of the battery module 2, improving the space utilization of the battery structure, and avoiding and reducing the risk of thermal runaway caused by a large number of cells and complex connections. In addition, since the input terminal of the boost module 4 is electrically connected to the battery management module 3, the battery management module 3 can monitor the status of the battery module 2 in real time and adjust the battery's operating status in a timely manner, thereby effectively preventing thermal runaway.

[0060] This application also proposes an electric vehicle, which includes a battery structure. The specific structure of the battery structure is as described in the above embodiments. Since this electric 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.

[0061] The aforementioned electric vehicles can be two-wheeled electric vehicles, three-wheeled electric vehicles, and four-wheeled low-speed electric vehicles.

[0062] The above description is merely an exemplary embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A battery structure, characterized by, The battery assembly further comprises a plurality of conductive pieces, one end of the conductive piece is connected with one battery monomer through a locking structure, the other end of the conductive piece is connected with another battery monomer through a locking structure, so that all the battery monomers form a series connection. The locking structure comprises a connecting column arranged on the battery monomer and a compression nut, the conductive piece is provided with a connecting hole, the connecting column passes through the connecting hole, the compression nut is threadedly connected with the connecting column, and the compression nut is used to compress the conductive piece to the outer surface of the battery monomer; and / or, The outer surface of the battery assembly is provided with a shock-absorbing layer; and / or, The battery monomers are provided with a buffer adhesive layer. Further comprising a limiting assembly, the limiting assembly comprises a first compression piece, the first compression piece abuts against the top of the battery assembly; and / or, 2. The battery structure of claim 1, wherein, The limiting assembly comprises a second compression piece, the second compression piece abuts against the top of the battery assembly, the first compression piece and the second compression piece are respectively arranged on both sides of the top of the battery assembly, and the first compression piece and the second compression piece are respectively detachably connected with the side wall of the shell.

3. The battery structure of claim 2, wherein, The first compression piece comprises a first vertical part and a first horizontal part, the first vertical part is detachably connected with the side wall of the shell, and the first horizontal part abuts against the top of the battery assembly; and / or, The second compression piece comprises a second vertical part and a second horizontal part, the second vertical part is detachably connected with the side wall of the shell, and the second horizontal part abuts against the top of the battery assembly. The shell comprises a lower box body and a cover body, the lower box body is provided with an opening, and the cover body covers the opening; the lower box body and the cover body surround to form the cavity, and the lower box body and the cover body are detachably connected.

4. The battery structure of claim 1, wherein The lower box body is provided with a partition plate, the partition plate is used to divide the inside of the lower box body into the first mounting space and the second mounting space, one side of the partition plate towards the second mounting space is provided with a groove, the battery management module is located in the groove, and the battery management module is detachably connected with the groove. The connecting part of the lower box body and the cover body is provided with a sealing strip.

5. The battery structure of claim 4, wherein The shell is provided with a charging interface, and the battery assembly is electrically connected with the charging interface; and / or, The shell is provided with a handle structure; and / or, 6. The battery structure of any one of claims 1 to 5, wherein, The shell is further provided with a discharge socket, and the discharge socket is connected with the boost module; and / or, 7. The battery structure of claim 6, wherein ​ 8. The battery structure of claim 7, wherein, ​ 9. The battery structure of any one of claims 1 to 5, wherein, ​ ​ ​ The shell is further provided with an electric quantity display screen, which is electrically connected with the battery management module; and / or, The shell is further provided with a weak current switch, which is electrically connected with the battery management module.

10. An electric vehicle, characterized by A battery structure as claimed in any one of claims 1 to 9.

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