Batteries and vehicles

Abstract

The application discloses a battery and a vehicle, the battery comprising at least one battery monomer, a box body and a buffer structure; the battery monomers are arranged in the box body; the buffer structure is fixedly connected to the box body, and the buffer structure protrudes from the side wall of the box body. According to the battery of the embodiment of the application, when the outer peripheral side of the battery is subjected to a collision, the buffer structure is subjected to a force, the buffer structure can absorb part of the collision energy, so that the force transmitted to the box body is smaller, the possibility that the box body is damaged under the force can be reduced, the safety and reliability of the battery are improved, and the influence on the service life of the battery is reduced.

Description

Technical Field

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

[0002] In related technologies, when the outer periphery of a battery is subjected to collisions or scratches, the battery is easily damaged, affecting its working performance, reducing its safety and reliability, and impacting its lifespan. Summary of the Invention

[0003] The present invention provides a battery and a vehicle in which a buffer structure can absorb part of the impact energy when the outer periphery of the battery is subjected to a collision, thereby reducing the possibility of battery damage and improving battery safety performance.

[0004] In a first aspect, the present invention provides a battery comprising: at least one battery cell; a housing, wherein all battery cells are disposed within the housing; and a buffer structure fixedly connected to the housing and protruding from the side wall of the housing.

[0005] In the above technical solution, the buffer structure is fixedly connected to the box body and protrudes from the side wall of the box body. When the outer periphery of the battery is hit, the buffer structure is subjected to force and can absorb part of the impact energy. In this way, the force transmitted to the box body is reduced, which can reduce the possibility of the box body being damaged under force, thereby improving the safety and reliability of the battery and reducing the impact on the battery's lifespan.

[0006] In some embodiments, the housing includes a housing body and a bottom plate, the housing body and the bottom plate are fixedly connected, a receiving cavity is formed between the housing body and the bottom plate, and at least one battery cell is disposed in the receiving cavity; the buffer structure is fixedly connected to the bottom plate.

[0007] In the above technical solution, the buffer structure is fixedly connected to the base plate, and the buffer structure protects the base plate. When the outer periphery of the box is hit by a collision, the buffer structure absorbs part of the collision energy, and the force on the base plate is small, which can reduce the possibility of damage to the base plate.

[0008] In some embodiments, the buffer structure includes a connecting part and a buffer part, the connecting part being fixedly connected between the base plate and the buffer part, the buffer part and the side wall of the housing being disposed opposite to each other, and a buffer space for the buffer part to deform is formed between the buffer part and the side wall of the housing.

[0009] In the above technical solution, a buffer space is formed between the buffer part and the side wall of the box to allow the buffer part to deform. When the outer periphery of the battery is hit, the buffer part is subjected to force and deforms to absorb part of the impact energy. In this way, the force transmitted to the box is reduced, which can reduce the possibility of the box being damaged under force, thereby further improving the safety and reliability of the battery and reducing the impact on the battery's lifespan.

[0010] In some embodiments, the direction perpendicular to the sidewall is the width direction of the buffer space, and the width of the buffer space is 5~30mm.

[0011] In the above technical solution, by ensuring that the width of the buffer space is not less than 5mm, the buffer space can absorb more collision energy and better protect the housing; in addition, by ensuring that the width of the buffer space is not greater than 30mm, while ensuring the energy absorption function of the buffer space, it also helps to reduce the size of the battery and reduce the space occupied by the battery.

[0012] In some embodiments, the direction perpendicular to the base plate is the height direction of the buffer space, and the height of the buffer space is 5~30mm.

[0013] In the above technical solution, by ensuring that the height of the buffer space is not less than 5mm, the protection height of the buffer structure is relatively high, and the buffer structure can protect the box over a wider area, further reducing the possibility of damage to the box under stress; by ensuring that the height of the buffer space is not greater than 30mm, while increasing the protection range of the buffer structure for the box, it also helps to reduce the amount of material used in the buffer structure, which helps to reduce the overall weight of the battery.

[0014] In some embodiments, the connecting portion extends in an arc shape in the direction from the buffer portion to the base plate.

[0015] In the above technical solution, when the outer periphery of the battery is impacted, the buffer section absorbs some of the impact energy, and the connecting section can transfer the force on the buffer section to the base plate. This reduces the force on the main body of the casing, decreasing the likelihood of damage. Furthermore, the arc-shaped connecting section also serves a guiding function; when the buffer structure is impacted, the connecting section can guide the impact point to the base plate, further mitigating the damage to the main body of the casing.

[0016] In some embodiments, the buffer structure and the base plate are integrally formed.

[0017] In the above technical solution, the buffer structure and the base plate are integrally formed, which can enhance the stability of the overall structure and performance of the buffer structure and the base plate, and can eliminate unnecessary assembly parts and connection processes, which is conducive to improving the assembly efficiency of the battery.

[0018] In some embodiments, the main body of the enclosure and the bottom plate are fixedly connected by a connecting structure, which is detachably connected to the main body of the enclosure and the bottom plate.

[0019] In the above technical solution, the connecting structure is detachably connected to the main body of the box and the bottom plate, which facilitates the assembly and disassembly of the main body of the box and the bottom plate. When the bottom plate is severely deformed or damaged, it is convenient to remove the bottom plate for maintenance and replacement, and it is also convenient to maintain the main body of the box and the battery cells.

[0020] In some embodiments, a threaded hole is formed on the main body of the housing, a through hole is formed on the bottom plate, and the connecting structure is a screw, which passes through the through hole and is screwed to the main body of the housing through the threaded hole.

[0021] In the above technical solution, the bottom plate can be fixedly connected to the main body of the box by means of a connecting structure and a threaded connection, and it is easy to disassemble, further improving the convenience of battery maintenance.

[0022] In some embodiments, the head of the connecting structure protrudes from the bottom surface of the base plate, and the direction perpendicular to the base plate is the height direction of the connecting structure, wherein the height dimension of the head is less than or equal to 6 mm.

[0023] In the above technical solution, by ensuring that the height of the head of the connecting structure is no more than 6mm, the possibility of the connecting structure being squeezed by the impact when the battery is subjected to a collision can be reduced, thereby reducing the possibility of battery damage caused by deformation of the connecting structure after being subjected to force, so as to further improve the safety and reliability of the battery.

[0024] In some embodiments, the main body of the housing includes a side beam forming the side wall, a hollow cavity is formed in the side beam, a connecting nut is provided in the hollow cavity, the connecting nut has a threaded hole, the bottom surface of the side beam has a mounting hole communicating with the hollow cavity, and the connecting nut is riveted to the side beam through the mounting hole.

[0025] In the above technical solution, the connecting nut is riveted to the side beam through the mounting hole, which is convenient for operation and makes the connection between the connecting nut and the side beam more stable. The connection between the connecting structure and the connecting nut through the threaded connection can further enhance the stability of the connection between the base plate and the main body of the box.

[0026] In some embodiments, a first sealing element is provided between the bottom surface of the main body of the box and the bottom plate.

[0027] In the above technical solution, the first sealing element can enhance the sealing between the bottom surface of the main body of the box and the base plate, thereby enhancing the airtightness of the battery and further improving the safety of the battery.

[0028] In some embodiments, the buffer structure forms a clearance notch for avoiding the mounting structure of the battery.

[0029] In the above technical solution, the battery installation structure is avoided by avoiding the clearance notch, making the battery installation more convenient and easier to operate; for example, when the battery is installed in the vehicle body, the clearance notch can avoid the installation structure that connects the battery to the vehicle body, making it convenient to install and remove the battery from the vehicle body.

[0030] In some embodiments, the battery cells are spaced apart from the sidewalls of the housing.

[0031] In the above technical solution, by separating the side wall of the housing from the battery cells, the transmission of force between the side wall of the housing and the battery cells can be blocked. For example, when the side wall of the housing is subjected to an impact force, the side wall of the housing is less likely to transmit the impact force to the battery cells, thus improving the safety of the battery cells. Furthermore, the separation between the side wall of the housing and the battery cells allows the side wall of the housing to have deformation space. When the side wall of the housing is deformed by force, the possibility of the side wall of the housing squeezing the battery cells can be reduced, which can further improve the safety and reliability of the battery.

[0032] In some embodiments, the housing includes a housing body and a bottom plate, the housing body and the bottom plate are fixedly connected, a receiving cavity is formed between the housing body and the bottom plate, at least one battery cell is disposed in the receiving cavity, and the bottom surface of the battery cell is spaced apart from the bottom plate.

[0033] In the above technical solution, the bottom surface of the battery cell is separated from the base plate, and there is a buffer energy absorption space between the base plate and the battery cell. When the base plate is subjected to force, the base plate can deform to absorb some energy. The buffer energy absorption space can absorb some collision energy, which can reduce the possibility of the base plate squeezing the battery cell, thereby further improving the safety of the battery cell.

[0034] In some embodiments, the distance between the bottom surface of the battery cell and the base plate is 10~25mm.

[0035] In the above technical solution, by ensuring that the distance between the bottom surface of the battery cell and the base plate is not less than 10mm, sufficient deformation space can be provided for the base plate to reduce the possibility of the battery cell being squeezed under stress and deformation, thereby improving the safety of the battery cell; by ensuring that the distance between the bottom surface of the battery cell and the base plate is not greater than 25mm, it is beneficial to reduce the overall volume of the battery.

[0036] In some embodiments, the housing contains a cavity for accommodating the battery cell. The housing includes side beams forming the sidewalls. The side beams include a first side beam, a second side beam, a third side beam, and a fourth side beam arranged sequentially along the circumference of the housing. A first hollow cavity isolated from the external environment is formed within the first side beam. At least one of the second side beam and the fourth side beam forms a second hollow cavity isolated from the external environment. The first hollow cavity communicates with the second hollow cavity. A wire-passing hole is formed on the sidewall of the second hollow cavity facing the cavity, communicating with the cavity. The wire-passing hole is used for the battery wiring harness to pass through. The buffer structure protrudes from the first side beam.

[0037] In the above technical solution, both the first hollow cavity and the second hollow cavity are isolated from the external environment, which can enhance the airtightness of the battery. With the buffer structure protruding from the first side beam, when the outer periphery of the battery is hit or scratched, the buffer structure is subjected to force and can absorb part of the impact energy. This reduces the force transmitted to the first side beam, which can reduce the possibility of the first side beam being damaged under force, thereby improving the sealing of the first hollow cavity and thus improving the airtightness of the battery.

[0038] In some embodiments, a partition is provided between the first hollow cavity and the second hollow cavity to separate the first hollow cavity from the second hollow cavity.

[0039] In the above technical solution, by setting a partition between the first hollow cavity and the second hollow cavity to separate the first hollow cavity and the second hollow cavity, in the event that the first side beam is damaged or cracked by a collision, the first hollow cavity is connected to the external environment, while the second hollow cavity remains isolated from the external environment. In this way, the possibility of the cavity being connected to the external environment is small, which can improve the airtightness of the battery and thus improve the safety performance of the battery.

[0040] In some embodiments, the housing includes a top cover and side beams forming the side walls, the top cover being disposed on top of the side beams, the battery cells being inverted, and the battery cells being connected to the top cover.

[0041] In the above technical solutions, by connecting the battery cells to the top cover, the structural strength of the top of the battery can be increased, the deformation of the top cover can be reduced when the battery is subjected to force, and the safety and reliability of the battery can be improved. For example, when the battery is a CTB (Cell to Body) battery, the top cover of the battery can form the floor of the vehicle. By connecting the upper part of the battery cells to the top cover, the structural strength of the vehicle floor can be enhanced.

[0042] In some embodiments, an adhesive layer is provided between the upper surface of the battery cell and the top cover to connect the battery cell and the top cover.

[0043] In the above technical solution, the battery cell and the top cover are connected by an adhesive layer, which makes the connection between the battery cell and the top cover more stable and the connection method is relatively simple.

[0044] In some embodiments, the housing has a receiving cavity for accommodating the battery cell, the housing includes a top cover and side beams forming the side walls, the top cover is disposed on the top of the side beams, and a second sealing element is provided between the top cover and the top surface of the side beams.

[0045] In the above technical solution, a second sealing element is provided between the top surface of the top cover and the top surface of the side beam, which can enhance the sealing between the top cover and the side beam, thereby further enhancing the airtightness of the battery.

[0046] Secondly, the present invention provides a vehicle comprising: a vehicle body; and the aforementioned battery, wherein the battery is fixedly mounted on the vehicle body.

[0047] In the above technical solution, by using the battery described above, the buffer structure is fixedly connected to the box body, and the buffer structure protrudes from the side wall of the box body. When the outer periphery of the battery is subjected to a collision, the buffer structure is subjected to a force. The buffer structure can absorb part of the collision energy, thus reducing the force transmitted to the box body. This can reduce the possibility of the box body being damaged under force, thereby improving the safety and reliability of the battery and reducing the impact on the battery's lifespan.

[0048] In some embodiments, the vehicle has a front end, and the buffer structure is fixedly connected to one end of the housing near the front end.

[0049] In the above technical solution, a buffer structure is fixedly connected to the end of the housing near the front of the vehicle. When the battery is hit, the buffer structure is subjected to force and can absorb part of the impact energy. In this way, the force transmitted to the housing is reduced, which can reduce the possibility of the housing being damaged under force, thereby improving the safety and reliability of the battery and reducing the impact on the battery's lifespan.

[0050] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0051] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the disassembled box body according to some embodiments of the present invention; Figure 2 yes Figure 1 Enlarged view of point A in the middle; Figure 3 This is a cross-sectional view of a battery according to some embodiments of the present invention; Figure 4 yes Figure 3 Enlarged view of the middle section structure; Figure 5 This is a structural schematic diagram of a vehicle according to some embodiments of the present invention.

[0052] Figure label: 1000, vehicles; 100. Battery; 200. Vehicle body; 300. Front of vehicle; 1. Housing; 10. Housing body; 11. Top cover; 12. Side beam; 1a. Hollow cavity; 121. Mounting hole; 13. First side beam; 131. First hollow cavity; 14. Second side beam; 15. Fourth side beam; 16. Third side beam; 17. Battery cell; 171. Electrode terminal; 172. Battery cell body; 2. Base plate; 201. Through hole; 23. Buffer structure; 231. Buffer part; 232. Connecting part; 233. Inner surface; 234. Top surface; 24. Clearance notch; 3. Buffer space; 4. Connecting structure; 40. Head; 41. Lower end face; 42. Locking face; 5. Connecting nut; 51. Threaded hole; 6. First seal; 7. Receiving cavity. Detailed Implementation

[0053] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0054] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used in the specification of this application is for the purpose of describing particular embodiments only and is not intended to limit the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings are used to distinguish different objects, not to describe a particular order or hierarchy.

[0055] In this invention, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments.

[0056] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0057] In this invention, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this invention, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0058] In the embodiments of the present invention, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of the present invention shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on the present invention.

[0059] In this invention, "multiple" refers to two or more (including two).

[0060] In this invention, battery 100 refers to a single physical module comprising one or more battery cells 17 to provide higher voltage and capacity. For example, battery 100 mentioned in this invention may include battery modules or battery packs. Some batteries 100 may include a battery housing for encapsulating one or more battery cells 17 or multiple battery modules, the battery housing preventing liquids or other foreign matter from affecting the charging or discharging of the battery cells 17.

[0061] In this invention, the battery cell 17 may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., and this embodiment of the invention is not limited to these. The battery cell 17 may be cylindrical, flat, cuboid, or other shapes, etc., and this embodiment of the invention is not limited to these. The battery cell 17 is generally divided into three types according to the packaging method: cylindrical battery cell, square battery cell, and pouch battery cell, and this embodiment of the invention is not limited to these.

[0062] In related technologies, batteries are easily damaged when they are bumped or scratched on the outer periphery, which affects their performance, reduces their safety and reliability, and shortens their lifespan.

[0063] Based on this, the applicant proposes a battery 100, which includes: at least one battery cell 17, a housing 1, and a buffer structure 23; the battery cells 17 are all disposed inside the housing 1; the buffer structure 23 is fixedly connected to the housing 1, and the buffer structure 23 protrudes from the side wall of the housing 1.

[0064] In the battery 100 with the above-described structure, the buffer structure 23 is fixedly connected to the housing 1, and the buffer structure 23 protrudes from the side wall of the housing 1. When the outer periphery of the battery 100 is subjected to a collision, the buffer structure 23 is subjected to a force. The buffer structure 23 can absorb part of the collision energy, thus reducing the force transmitted to the housing 1. This can reduce the possibility of the housing 1 being damaged under stress, thereby improving the safety and reliability of the battery 100 and reducing the impact on the service life of the battery 100.

[0065] The vehicle 1000 disclosed in this embodiment of the invention may be a fuel vehicle, a gas vehicle, a new energy vehicle, or a rail vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or a range-extended vehicle, etc.

[0066] The battery 100 according to an embodiment of the present invention is described below with reference to the accompanying drawings.

[0067] like Figures 1-4 As shown, in a first aspect, the present invention provides a battery 100, the battery 100 comprising: at least one battery cell 17, a housing 1 and a buffer structure 23; the battery cells 17 are all disposed within the housing 1; the buffer structure 23 is fixedly connected to the housing 1 and protrudes from the side wall of the housing 1.

[0068] Optionally, the battery 100 described above can be used in vehicle 1000, and the battery 100 can be located at the bottom, front or rear of vehicle 1000.

[0069] The battery 100 including at least one battery cell 17 means that the battery 100 includes one battery cell 17; or, the battery 100 includes multiple battery cells 17.

[0070] In the above technical solution, the buffer structure 23 is fixedly connected to the housing 1 and protrudes from the side wall of the housing 1. When the outer periphery of the battery 100 is impacted, the buffer structure 23 is subjected to force and can absorb part of the impact energy. In this way, the force transmitted to the housing 1 is reduced, which can reduce the possibility of the housing 1 being damaged under force, thereby improving the safety and reliability of the battery 100 and reducing the impact on the service life of the battery 100.

[0071] In some embodiments, refer to Figure 1 The housing 1 includes a housing body 10 and a bottom plate 2, which are fixedly connected. A receiving cavity 7 is formed between the housing body 10 and the bottom plate 2, and at least one battery cell 17 is disposed in the receiving cavity 7. A buffer structure 23 is fixedly connected to the bottom plate 2.

[0072] Optionally, in some embodiments of the present invention, the base plate 2 can form the bottom wall of the box 1. The base plate 2 can be made of a high-strength metal material, including but not limited to steel, so that the base plate 2 has high structural strength.

[0073] "At least one battery cell 17 is disposed in the receiving cavity 7" means that one battery cell 17 is disposed in the receiving cavity 7; or, two, three, four, or more than four battery cells 17 are disposed in the receiving cavity 7.

[0074] In the above technical solution, the buffer structure 23 is fixedly connected to the base plate 2. The buffer structure 23 protects the base plate 2. When the outer periphery of the box 1 is hit, the buffer structure 23 is subjected to force and absorbs part of the collision energy. The force on the base plate 2 is small, which can reduce the possibility of damage to the base plate 2.

[0075] In some embodiments, refer to Figure 4 The buffer structure 23 includes a connecting part 232 and a buffer part 231. The connecting part 232 is fixedly connected between the base plate 2 and the buffer part 231. The buffer part 231 and the side wall of the box 1 are arranged opposite to each other. A buffer space 3 is formed between the buffer part 231 and the side wall of the box 1 for the buffer part 231 to deform.

[0076] In the above technical solution, a buffer space is formed between the buffer part 231 and the side wall of the housing 1 to allow the buffer part 231 to deform. When the outer periphery of the battery 100 is subjected to a collision, the buffer part 231 is subjected to a force. The deformation of the buffer part 231 can absorb part of the collision energy, thus reducing the force transmitted to the housing 1. This can reduce the possibility of the housing 1 being damaged under force, thereby further improving the safety and reliability of the battery 100 and reducing the impact on the service life of the battery 100.

[0077] In some embodiments, refer to Figure 4 The direction perpendicular to the sidewall is the width direction of the buffer space 3, and the width L1 of the buffer space 3 is 5~30mm.

[0078] For example, the width L1 of the buffer space 3 can be 8mm, 10mm, 15mm or 17mm.

[0079] The surface of the buffer section 231 facing the side wall of the housing 1 is the inner surface 233 of the buffer section 231. The width L1 of the buffer space 3 can be measured in the following way: when the battery 100 is in a normal state and the buffer structure 23 is not deformed by external force, measure the distance between the inner surface 233 of the buffer section 231 and the side wall of the housing 1 in the width direction of the buffer space 3. At least three different positions can be selected on the inner surface 233 of the buffer section 231 to measure the distance between the inner surface 233 of the buffer section 231 and the side wall of the housing 1 in the width direction of the buffer space 3. Calculate the average value of the distances obtained from the above at least three different positions. This average value is the measured width L1 of the buffer space 3 and the average value is within the range of 5 to 30 mm.

[0080] In the above technical solution, by ensuring that the width L1 of the buffer space 3 is not less than 5mm, the buffer space 3 can absorb more collision energy and better protect the housing 1. In addition, by ensuring that the width L1 of the buffer space 3 is not greater than 30mm, while ensuring the energy absorption function of the buffer space 3, it also helps to reduce the volume of the battery 100 and reduce the space occupied by the battery 100.

[0081] In some embodiments, refer to Figure 4 The direction perpendicular to the base plate 2 is the height direction of the buffer space 3, and the height H1 of the buffer space 3 is 5~30mm.

[0082] For example, the height H1 of the buffer space 3 can be 8mm, 10mm, 15mm or 17mm.

[0083] The upward-facing surface of the buffer section 231 is the upper end face 234 of the buffer section 231. The height H1 of the buffer space 3 can be measured in the following manner: when the battery 100 is in a normal state and the buffer structure 23 is not deformed by external force, the vertical distance between the upper end face 234 of the buffer section 2 and the upper surface of the base plate 2 in the height direction of the buffer space 3 is measured. At least three different positions can be selected on the upper end face 234 of the buffer section 231 to measure the vertical distance between the upper end face 234 of the buffer section 231 and the upper surface of the base plate 2 in the height direction of the buffer space 3. The average value of the distances obtained from the above-mentioned at least three different positions is calculated. The average value is the height H1 of the buffer space 3 obtained by measurement and the average value is within the range of 5~30mm.

[0084] In the above technical solution, by ensuring that the height H1 of the buffer space 3 is not less than 5mm, the protection height of the buffer structure 23 is relatively high, and the buffer structure 23 can protect the box 1 over a larger area, further reducing the possibility of damage to the box 1 under force; by ensuring that the height H1 of the buffer space 3 is not greater than 30mm, while increasing the protection range of the buffer structure 23 for the box 1, it also helps to reduce the amount of material used in the buffer structure 23, which helps to reduce the overall weight of the battery 100.

[0085] In some embodiments, refer to Figure 4 The connecting part 232 extends in an arc shape in the direction from the buffer part 231 to the base plate 2.

[0086] In the above technical solution, when the outer periphery of the battery 100 is impacted, the buffer portion 231 is subjected to force and absorbs part of the impact energy. The connecting portion 232 can transfer the force received by the buffer portion 231 to the base plate 2. In this way, the force received by the main body 10 of the casing is smaller, which can reduce the possibility of damage to the main body 10 of the casing. In addition, the arc-shaped connecting portion 232 also has a guiding function. When the buffer structure 23 is impacted, the connecting portion 232 can guide the impact position to the base plate 2 to reduce the degree of damage to the main body 10 of the casing.

[0087] In some embodiments, refer to Figure 4 The buffer structure 23 and the base plate 2 are integrally formed.

[0088] In the above technical solution, the buffer structure 23 and the base plate 2 are integrally formed, which can enhance the stability of the overall structure and performance of the buffer structure 23 and the base plate 2, and can eliminate unnecessary assembly parts and connection processes, which is conducive to improving the assembly efficiency of the battery 100.

[0089] In some embodiments, refer to Figures 1-4The main body 10 and the bottom plate 2 are fixedly connected by a connecting structure 4, which is detachably connected to the main body 10 and the bottom plate 2.

[0090] In the above technical solution, the connecting structure 4 is detachably connected to the main body 10 of the box and the bottom plate 2, which facilitates the disassembly and assembly of the main body 10 of the box and the bottom plate 2; when the bottom plate 2 is severely deformed or damaged, it is convenient to disassemble the bottom plate 2 for maintenance and replacement, and it is also convenient to maintain the main body 10 of the box and the battery cell 17.

[0091] In some embodiments, refer to Figure 4 A threaded hole 51 is formed on the main body 10 of the box, and a through hole 201 is formed on the bottom plate 2. The connecting structure 4 is a screw, which passes through the through hole 201 and is screwed to the main body 10 of the box through the threaded hole 51.

[0092] In the above technical solution, the bottom plate 20 can be fixedly connected to the main body 10 of the box by the connection structure 4 and the box body 10, and it is easy to disassemble, which further improves the convenience of maintaining the battery 100.

[0093] In some embodiments, refer to Figure 4 The head of the connecting structure 4 protrudes from the bottom surface of the base plate 2, and the direction perpendicular to the base plate 2 is the height direction of the connecting structure 4. The height dimension H2 of the head is less than or equal to 6mm.

[0094] For example, the height H2 of the head of the connecting structure 4 can be 6mm, 5mm, 4mm or 3mm.

[0095] In this structure, the downward-facing surface of the head 40 of the connecting structure 4 is the lower end face 41 of the head 40, the downward-facing surface of the base plate 2 is the bottom surface of the base plate 2, and the surface of the head 40 that abuts or contacts the bottom surface of the base plate 2 is the locking surface 42 of the head 40. The height dimension H2 of the head 40 of the connecting structure 4 can be obtained by measuring the vertical distance between the lower end face 41 of the head 40 and the locking surface 42 when the battery 100 is in a normal state. At least three different positions can be selected on the lower end face 41 of the head 40 to measure the vertical distance between the lower end face 41 of the head 40 and the locking surface 42. The maximum value of the distance obtained from the above at least three different positions is calculated. This maximum value is the height H2 of the head 40 of the connecting structure 4, and this maximum value is less than or equal to 6mm.

[0096] It is understandable that when the battery 100 is hit by an obstacle, the larger the height of the head of the connecting structure 4, the easier it is for the head of the connecting structure 4 to come into contact with the obstacle. In this way, the obstacle directly squeezes the head of the connecting structure 4, which can easily cause the connecting structure 4 to be severely deformed or even broken, affecting the stability of the connection between the base plate 2 and the main body 10 of the box, and also easily affecting the safety and service life of the battery 100.

[0097] In the above technical solution, by ensuring that the height dimension H2 of the head of the connecting structure 4 is no greater than 6mm, the possibility of the connecting structure 4 being squeezed by the collision when the battery 100 is subjected to an impact can be reduced, thereby reducing the possibility of damage to the battery 100 caused by the deformation of the connecting structure 4 after being subjected to the force, so as to further improve the safety and reliability of the battery 100.

[0098] In some embodiments, refer to Figure 3 and Figure 4 The main body 10 of the box includes a side beam 12 forming the side wall. A hollow cavity 1a is formed in the side beam 12. A connecting nut 5 is provided in the hollow cavity 1a. The connecting nut 5 has a threaded hole 51. The bottom surface of the side beam has a mounting hole communicating with the hollow cavity 1a. The connecting nut is riveted to the side beam through the mounting hole.

[0099] For example, the connecting nut 5 mentioned above can be a rivet nut.

[0100] In the above technical solution, the connecting nut 5 is riveted to the side beam 12 through the mounting hole 121, which is convenient for operation and makes the connection between the connecting nut 5 and the side beam 12 more stable. The connection between the connecting structure 4 and the connecting nut 5 through the threaded connection can further enhance the stability of the connection between the bottom plate 2 and the box body 10.

[0101] In some embodiments, refer to Figure 4 A first sealing element 6 is provided between the bottom surface of the main body 10 and the bottom plate 2.

[0102] In the above technical solution, the first sealing element 6 can enhance the sealing between the bottom surface of the main body 10 and the bottom plate 2, thereby enhancing the airtightness of the battery 100 and further improving the safety of the battery 100.

[0103] In some embodiments, refer to Figure 1 and Figure 2 The buffer structure 23 forms a clearance notch 24, which is used to avoid the mounting structure of the battery 100.

[0104] In the above technical solution, by avoiding the installation structure of the battery 100 through the avoidance notch 24, the installation of the battery 100 is more convenient and easier to operate; for example, when the battery 100 is installed on the vehicle body, the avoidance notch 24 can avoid the installation structure that connects the battery 100 to the vehicle body, making it convenient to install and remove the battery 100 from the vehicle body.

[0105] In some embodiments, refer to Figure 3 The battery cell 17 is separated from the side wall of the casing 1.

[0106] In the above technical solution, by separating the side wall of the housing 1 from the battery cell 17, the transmission of force between the side wall of the housing 1 and the battery cell 17 can be blocked. For example, when the side wall of the housing 1 is subjected to an impact force, the side wall of the housing 1 is less likely to transmit the impact force to the battery cell 17, thus improving the safety of the battery cell 17. Furthermore, the separation between the side wall of the housing 1 and the battery cell 17 allows the side wall of the housing 1 to have deformation space. When the side wall of the housing 1 is subjected to force and deforms, the possibility of the side wall of the housing 1 squeezing the battery cell 17 can be reduced, which can further improve the safety and reliability of the battery 100.

[0107] In some embodiments, refer to Figures 1-3 The housing 1 includes a housing body 10 and a bottom plate 2. The housing body 10 and the bottom plate 2 are fixedly connected, and a receiving cavity 7 is formed between the housing body 10 and the bottom plate 2. At least one battery cell 17 is disposed in the receiving cavity 7, and the bottom surface of the battery cell 17 is spaced apart from the bottom plate 2.

[0108] "At least one battery cell is disposed in the receiving cavity" means that one battery cell 17 is disposed in the receiving cavity 7; or, multiple battery cells 17 are disposed in the receiving cavity 7.

[0109] In the above technical solution, the bottom surface of the battery cell 17 is separated from the base plate 2, and there is a buffer energy absorption space between the base plate 2 and the battery cell 17. When the base plate 2 is subjected to force, the base plate 2 can deform to absorb some energy. The buffer energy absorption space can absorb some collision energy, which can reduce the possibility of the base plate 2 squeezing the battery cell 17, thereby further improving the safety of the battery cell 17.

[0110] In some embodiments, refer to Figure 3 The distance L2 between the bottom surface of the battery cell 17 and the base plate 2 is 10~25mm.

[0111] For example, the distance L2 between the bottom surface of the battery cell 17 and the base plate can be 13mm, 14mm, 16mm or 20mm.

[0112] Optionally, the battery cell 17 includes a battery cell body 172 and an electrode terminal 171, with the electrode terminal 171 located on one side of the battery cell body 172.

[0113] When the electrode terminal 171 is located on the bottom surface of the battery cell body 172, the downward-facing surface of the electrode terminal 171 is the bottom surface of the electrode terminal 171 and can also be used as the bottom surface of the battery cell 17. The distance L2 between the bottom surface of the battery cell 17 and the base plate can be measured in the following way: when the battery 100 is in a normal state and the battery cell 17 and the base plate 2 are not deformed by external force, the vertical distance between the bottom surface of the electrode terminal 171 and the upper surface of the base plate 2 is measured. At least three different battery cells 17 can be selected, and the vertical distance between the bottom surface of the electrode terminal 171 of the different battery cells 17 and the upper surface of the base plate 2 is measured. The average value of the distances obtained by measuring the at least three different battery cells 17 is calculated. The average value is the distance L2 between the bottom surface of the battery cell 17 and the base plate 2 obtained by measurement, and the average value is within the range of 10~25mm.

[0114] When the electrode terminal 171 is located on a side other than the bottom surface of the battery cell body 172, the downward-facing surface of the battery cell body 172 is the bottom surface of the battery cell body 172 and can be used as the bottom surface of the battery cell 17. The distance L2 between the bottom surface of the battery cell 17 and the base plate can be measured in the following way: when the battery 100 is in a normal state and the battery cell 17 and the base plate 2 are not deformed by external force, the vertical distance between the bottom surface of the battery cell body 172 and the upper surface of the base plate 2 is measured. At least three different battery cells 17 can be selected, and the vertical distance between the bottom surface of the different battery cells 17 and the upper surface of the base plate 2 is measured. The average value of the distances obtained by measuring the at least three different battery cells 17 is calculated. The average value is the distance L2 between the bottom surface of the battery cell 17 and the base plate 2, and the average value is within the range of 10~25mm.

[0115] In the above technical solution, by ensuring that the distance L2 between the bottom surface of the battery cell 17 and the base plate is not less than 10mm, sufficient deformation space can be provided for the base plate 2 to reduce the possibility of the base plate 2 squeezing the battery cell 17 under stress deformation, thereby improving the safety of the battery cell 17; by ensuring that the distance L2 between the bottom surface of the battery cell 17 and the base plate 2 is not greater than 25mm, it is beneficial to reduce the overall volume of the battery 100.

[0116] In some embodiments, refer to Figures 1-3The housing 1 has a cavity 7 for accommodating the battery cell 17. The housing 1 includes side beams 12 forming the side walls. The side beams 12 include a first side beam 13, a second side beam 14, a third side beam 16, and a fourth side beam 15 arranged sequentially along the circumference of the housing 1. The first side beam 13 has a first hollow cavity 131 that is isolated from the external environment. At least one of the second side beams 14 and the fourth side beam 15 has a second hollow cavity that is isolated from the external environment. The first hollow cavity 131 communicates with the second hollow cavity. The side wall of the second hollow cavity facing the cavity has a wire hole that communicates with the cavity 7. The wire hole is used for the wire harness of the battery 100 to pass through. The buffer structure 23 protrudes from the first side beam 13.

[0117] At least one of the second side beam 14 and the fourth side beam 15 forms a second hollow cavity that is isolated from the external environment. It can be considered that the second side beam 14 forms a second hollow cavity that is isolated from the external environment; it can also be considered that the fourth side beam 15 forms a second hollow cavity that is isolated from the external environment; or it can be considered that both the second side beam 14 and the fourth side beam 15 form a second hollow cavity that is isolated from the external environment.

[0118] For example, when the battery is used in a vehicle, the front side of the battery is easily scratched, which can damage the first side beam. The first hollow cavity and the second hollow cavity inside the first side beam are connected, which can compromise the airtightness of the battery.

[0119] In the above technical solution, both the first hollow cavity 131 and the second hollow cavity are isolated from the external environment, which can enhance the airtightness of the battery 100. The buffer structure 23 protrudes from the first side beam. When the outer periphery of the battery 100 is hit or scratched, the buffer structure 23 is subjected to force and can absorb part of the impact energy. This reduces the force transmitted to the first side beam 13, which can reduce the possibility of the first side beam 13 being damaged under force, thereby improving the sealing of the first hollow cavity 131 and thus improving the airtightness of the battery 100.

[0120] In some embodiments, a partition is provided between the first hollow cavity 131 and the second hollow cavity to separate the first hollow cavity 131 and the second hollow cavity.

[0121] Understandably, if the first side beam 13 is severely deformed or damaged, the first hollow cavity 131 within the first side beam 13 may easily connect with the external environment. Since the first hollow cavity 131 connects with the second hollow cavity, and the second hollow cavity connects with the receiving cavity 7, this will cause the receiving cavity 7 to connect with the external environment, affecting the airtightness of the battery 100 and making it difficult to guarantee the safety of the battery 100. For example, when the battery is used in a vehicle, during the driving process, when the vehicle 1000 passes over uneven roads or roads with obstacles, the battery 100 located at the bottom of the vehicle body is easily subjected to collisions or scratches. The front side of the battery 100 is easily scratched, causing the first side beam 13 to be easily damaged by the collision. This can easily cause the receiving cavity 7 to connect with the external environment, affecting the airtightness of the battery 100.

[0122] In the above technical solution, by setting a partition between the first hollow cavity 131 and the second hollow cavity to isolate the first hollow cavity 131 and the second hollow cavity, in the event that the first side beam 13 is damaged or cracked by a collision, the first hollow cavity 131 is connected to the external environment, while the second hollow cavity remains isolated from the external environment. In this way, the possibility of the receiving cavity 7 being connected to the external environment is small, which can improve the airtightness of the battery 100 and thus enhance the safety performance of the battery 100.

[0123] In some embodiments, refer to Figure 3 The housing 1 includes a top cover 11 and side beams 12 forming the side walls. The top cover 11 is placed on top of the side beams 12. The battery cell 17 is inverted and connected to the top cover 11.

[0124] It should be noted that the electrode terminals 171 of the battery cell 17 can be located on the same side of the battery cell 17. When the battery cell 17 is inverted, it can be considered that the end of the battery cell 17 with the electrode terminals 171 faces the bottom plate 2, and the other end of the battery cell 17 faces the top cover 11 and is connected to the top cover 11.

[0125] In the above technical solution, by connecting the battery cell 17 to the top cover 11, the structural strength of the top of the battery 100 can be increased, the deformation of the top cover 11 can be reduced when the battery 100 is subjected to force, and the safety and reliability of the battery 100 can be improved. For example, when the battery 100 is a CTB (Cell to Body) battery, the top cover 11 of the battery 100 can form the floor of the vehicle 1000. By connecting the upper part of the battery cell 17 to the top cover 11, the structural strength of the floor of the vehicle 1000 can be enhanced.

[0126] In some embodiments, an adhesive layer is provided between the upper surface of the battery cell 17 and the top cover 11 to connect the battery cell 17 and the top cover 11.

[0127] In the above technical solution, the battery cell 17 and the top cover 11 are connected by an adhesive layer, which makes the connection between the battery cell 17 and the top cover 11 have good connection stability and the connection method is relatively simple.

[0128] In some embodiments, refer to Figure 3 The housing 1 has a cavity 7 for accommodating the battery cell 17. The housing 1 includes a top cover 11 and a side beam 12 forming the side wall. The top cover 11 covers the top of the side beam 12, and a second seal is provided between the top cover 11 and the top surface of the side beam 12.

[0129] In the above technical solution, a second sealing element is provided between the top surface of the top cover 11 and the top surface of the side beam 12, which can enhance the sealing between the top cover 11 and the side beam 12, thereby further enhancing the airtightness of the battery 100.

[0130] Reference Figure 5 Secondly, the present invention provides a vehicle 1000, comprising: a vehicle body 200 and the aforementioned battery 100, wherein the battery 100 is fixedly installed on the vehicle body 200.

[0131] Battery 100 can provide electrical energy to vehicle body 200 and can also serve as a driving power source for vehicle body 200, providing driving force to vehicle body 200.

[0132] Optionally, such as Figure 5 As shown, when the battery 100 is used in the vehicle body 200, the battery 100 can be disposed at the bottom of the vehicle body 200. The battery 100 can be used to power the vehicle body 200; for example, the battery 100 can serve as the operating power source for the vehicle body 200's electrical system. The vehicle body 200 may also include a controller and a motor. The controller is used to control the battery 100 to supply power to the motor, for example, to meet the power requirements of the vehicle body 200 during startup, navigation, and driving.

[0133] By using the battery 100 described above, the buffer structure 23 is fixedly connected to the housing 1, and the buffer structure 23 protrudes from the side wall of the housing 1. When the outer periphery of the battery 100 is subjected to a collision, the buffer structure 23 is subjected to a force. The buffer structure 23 can absorb part of the collision energy, so the force transmitted to the housing 1 is reduced, which can reduce the possibility of the housing 1 being damaged under force, thereby improving the safety and reliability of the battery 100 and reducing the impact on the service life of the battery 100.

[0134] In some embodiments, the vehicle 1000 has a front end 300, and a buffer structure 23 is fixedly connected to one end of the housing 1 near the front end 300.

[0135] It is understandable that when the vehicle 1000 is in motion, when it passes over uneven or bumpy roads, or when it passes over roads with obstacles, the battery 1000 located on the vehicle body is easily bumped or scratched, especially the side of the battery 100 closest to the front of the vehicle, which is easily scratched and may affect the safety of the battery.

[0136] In the above technical solution, the buffer structure 23 is fixedly connected to one end of the housing 1 near the front of the vehicle 300. When the battery 100 is subjected to a collision, the buffer structure 23 is subjected to a force and can absorb part of the collision energy. In this way, the force transmitted to the housing 1 is reduced, which can reduce the possibility of the housing 1 being damaged under the force, thereby improving the safety and reliability of the battery 100 and reducing the impact on the service life of the battery 100.

[0137] In some embodiments of the present invention, reference is made to... Figures 1-4 The battery 100 includes a housing 1, a buffer structure 23 and multiple battery cells 17. The battery cells 17 are all disposed inside the housing 1 and are spaced apart from the side wall of the housing 1. The buffer structure 23 is fixedly connected to the housing 1 and protrudes from the side wall of the housing 1.

[0138] The housing 1 includes a top cover 11, a housing body 10, and a bottom plate 2. The housing body 10 and the bottom plate 2 are fixedly connected, forming a receiving cavity 7 between the housing body 10 and the bottom plate 2. Multiple battery cells 17 are disposed in the receiving cavity 7. The bottom plate 2 is located at the bottom of the housing body 10, and the top cover 11 is connected to the top of the housing body 10. A second sealing element is provided between the top cover 11 and the housing body 10. The buffer structure 23 is connected and fixed to the bottom plate 2 and is integrally formed with the bottom plate.

[0139] The main body 10 of the box includes a side beam 12, which forms the side wall of the box 1. A hollow cavity 1a is formed inside the side beam 12. There can be four hollow cavities 1a arranged in sequence along the vertical direction. The bottom surface of the side beam 12 has a mounting hole 121 that communicates with the hollow cavity 1a. The mounting hole 121 penetrates the bottom wall of the lowest hollow cavity 1a. The connecting nut 5 is riveted to the side beam 12 through the mounting hole 121. The connecting nut 5 is a rivet nut.

[0140] The side beam 12 includes a first side beam 13, a third side beam 16, a second side beam 14, and a fourth side beam 15. The first side beam 13 is spaced apart from the battery cell 17, and the buffer structure 23 protrudes from the first side beam 13. A first hollow cavity 131 is formed within the first side beam 13, isolating it from the external environment. Second hollow cavities isolated from the external environment are formed in both the second side beam 14 and the fourth side beam 15. The left and right ends of the first side beam 13 are connected to the second side beam 14 and the fourth side beam 15, respectively. The first hollow cavity 131 communicates with the second hollow cavity. A wire-passing hole is formed on the side wall of the second hollow cavity facing the receiving cavity 7, communicating with the receiving cavity 7. The wire-passing hole is used for the wiring harness of the battery 100. A partition is provided between the first hollow cavity 131 and the second hollow cavity to separate them.

[0141] Side beam 12 and base plate 2 are fixedly connected by connecting structure 4, which is detachably connected to the main body 10 and base plate 2. Connecting nut 5 has a threaded hole 51, and a through hole 201 is formed on base plate 2. Connecting structure 4 is a screw, which passes through the through hole 201 and is screwed to the main body 10 through the threaded hole 51. A first sealing element 6 is provided between the bottom surface of side beam 12 and base plate 2. The head 40 of connecting structure 4 protrudes from the bottom surface of base plate 2, and the direction perpendicular to the base plate is the height direction of connecting structure 4. The height dimension H2 of head 40 is less than or equal to 6mm.

[0142] The base plate 2 is located below the battery cell 17 and spaced apart from the battery cell 17. The battery cell 17 includes a battery cell body 172 and an electrode terminal 171. The battery cell 17 is inverted, and the electrode terminal 171 is located on the bottom surface of the battery cell body 172. The distance L2 between the bottom surface of the electrode terminal 171 and the base plate 2 is 16mm. An adhesive layer is provided between the upper surface of the battery cell 17 and the top cover 11 to connect the battery cell 17 and the top cover 11.

[0143] A buffer structure 23 is connected to the front edge of the base plate 2 and extends upward, defining a buffer space 3 between the buffer structure 23 and the outer periphery of the side beam 12. A clearance notch 24 is formed on the buffer structure 23 to allow clearance from the mounting structure of the battery 100. The buffer structure 23 includes a buffer portion 231 and a connecting portion 232. The buffer portion 231 is opposite to and spaced apart from the side beam 12, and the connecting portion 232 connects the buffer portion 231 and the base plate 2, extending in an arc shape in the direction from the buffer portion 231 to the base plate 2.

[0144] The buffer section 231 and the side beam 12 are arranged opposite to each other, and a buffer space 3 is formed between the buffer section 231 and the side beam 12 for the buffer section 231 to deform. The direction of the buffer section 231 perpendicular to the side beam 12 is the width direction of the buffer space 3, and the width L1 of the buffer space 3 is 5~30mm; the direction of the buffer section 231 perpendicular to the base plate 2 is the height direction of the buffer space 3, and the height H1 of the buffer space 3 is 5~30mm.

[0145] In the above technical solution, the buffer structure 23 is fixedly connected to the housing 1 and protrudes from the side wall of the housing 1. When the outer periphery of the battery 100 is impacted, the buffer structure 23 is subjected to force and can absorb part of the impact energy. In this way, the force transmitted to the housing 1 is reduced, which can reduce the possibility of the housing 1 being damaged under force, thereby improving the safety and reliability of the battery 100 and reducing the impact on the service life of the battery 100.

[0146] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0147] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery, characterized by, include: At least one battery cell; The housing includes a main body and a bottom plate. The main body and the bottom plate are fixedly connected, and a receiving cavity is formed between the main body and the bottom plate. At least one battery cell is disposed in the receiving cavity. A buffer structure is fixedly connected to the housing and protrudes from the side wall of the housing. The buffer structure is fixedly connected to the bottom plate. The buffer structure includes a connecting part and a buffer part. The connecting part is fixedly connected between the bottom plate and the buffer part. The buffer part and the side wall of the housing are arranged opposite to each other, forming a buffer space for the deformation of the buffer part. The connecting part extends in an arc shape from the buffer part to the bottom plate. The housing includes a top cover and side beams forming the side walls. The top cover is placed on the top of the side beams. The direction perpendicular to the side wall is the width direction of the buffer space, and the width of the buffer space is 5~30mm. The direction perpendicular to the bottom plate is the height direction of the buffer space, and the height of the buffer space is 5~30mm. The buffer structure and the bottom plate are integrally formed.

2. The battery of claim 1, wherein, The main body of the box and the bottom plate are fixedly connected by a connecting structure, which is detachably connected to the main body of the box and the bottom plate.

3. The battery of claim 2, wherein, The main body of the box has a threaded hole, the bottom plate has a through hole, and the connecting structure is a screw. The connecting structure passes through the through hole and is screwed to the main body of the box through the threaded hole.

4. The battery of claim 2, wherein, The head of the connecting structure protrudes from the bottom surface of the base plate, and the direction perpendicular to the base plate is the height direction of the connecting structure. The height dimension of the head is less than or equal to 6mm.

5. The battery of claim 3, wherein, The main body of the box includes a side beam that forms the side wall. A hollow cavity is formed inside the side beam. A connecting nut is provided inside the hollow cavity. The connecting nut has a threaded hole. The bottom surface of the side beam has a mounting hole that communicates with the hollow cavity. The connecting nut is riveted to the side beam through the mounting hole.

6. The battery of claim 2, wherein, A first sealing element is provided between the bottom surface of the main body of the box and the bottom plate.

7. The battery according to any one of claims 1-6, characterized in that, The buffer structure forms a clearance notch, which is used to avoid the mounting structure of the battery.

8. The battery according to any one of claims 1-6, characterized in that, The individual battery cells are spaced apart from the side walls of the housing.

9. The battery according to claim 1, characterized in that, The enclosure includes a main body and a bottom plate. The main body and the bottom plate are fixedly connected, and a receiving cavity is formed between the main body and the bottom plate. At least one battery cell is disposed in the receiving cavity, and the bottom surface of the battery cell is spaced apart from the bottom plate.

10. The battery according to claim 9, characterized in that, The distance between the bottom surface of the battery cell and the base plate is 10~25mm.

11. The battery according to claim 1, characterized in that, The housing contains a cavity for accommodating the battery cell. The housing includes side beams forming the sidewalls. The side beams include a first side beam, a second side beam, a third side beam, and a fourth side beam arranged sequentially along the circumference of the housing. The first side beam contains a first hollow cavity isolated from the external environment. At least one of the second side beam and the fourth side beam contains a second hollow cavity isolated from the external environment. The first hollow cavity communicates with the second hollow cavity. The sidewall of the second hollow cavity facing the cavity contains a wire-passing hole that communicates with the cavity. The wire-passing hole is used for the battery wiring harness to pass through. The buffer structure protrudes from the first side beam.

12. The battery according to claim 11, characterized in that, A partition is provided between the first hollow cavity and the second hollow cavity to separate the first hollow cavity and the second hollow cavity.

13. The battery according to claim 1, characterized in that, The battery cell is inverted and connected to the top cover.

14. The battery according to claim 13, characterized in that, An adhesive layer is provided between the upper surface of the battery cell and the top cover to connect the battery cell and the top cover.

15. The battery according to claim 13, characterized in that, A second sealing element is provided between the top cover and the top surface of the side beam.

16. A vehicle, characterized in that, include: Vehicle body; The battery according to any one of claims 1-15, wherein the battery is fixedly mounted on the vehicle body.

17. The vehicle according to claim 16, characterized in that, The vehicle has a front end, and the buffer structure is fixedly connected to one end of the housing near the front end.

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