Battery and electric device

Abstract

The embodiment of the utility model provides a battery and a power utilization device, the battery comprises a containing box and a battery assembly, the containing box is provided with a containing cavity, and the containing box comprises a first box wall; the battery assembly is accommodated in the accommodating cavity and comprises a convex part; the first box wall is provided with a containing part, and at least part of the protruding part is contained in the containing part. According to the battery disclosed by the embodiment of the invention, the accommodating part is arranged on the first box wall, so that on one hand, the shape of the space in the accommodating box can better adapt to the shape of the outer contour formed by the battery assembly, and the requirement on the arrangement mode of each part in the battery assembly can be reduced; on the other hand, the overall size and volume of the accommodating box are reduced, the space utilization rate in the accommodating box is improved, the overall volume of the battery is reduced, and the energy density of the battery is improved.

Description

[0001] Cross Reference to Related Applications

[0002] The present disclosure is based on the Chinese patent application No. 202311265770.4, filed on September 27, 2023, entitled "Battery and electric device", the Chinese patent application No. 202322642524.8, filed on September 27, 2023, entitled "Vehicle", and the Chinese patent application No. 202311264394.7, filed on September 27, 2023, entitled "Battery monomer, cover plate assembly, battery and electric device", and claims priority to the above Chinese patent applications, the contents of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0003] Embodiments of the present disclosure relate to the technical field of battery production, in particular to a battery and an electric device. BACKGROUND

[0004] New energy batteries are increasingly widely used in life and industry. For example, new energy vehicles equipped with batteries have been widely used, and batteries are also increasingly used in the field of energy storage and the like.

[0005] The battery includes a containing box and a plurality of battery monomers. The plurality of battery monomers are arranged in the containing box and are electrically connected to each other in series and parallel to realize charging and discharging.

[0006] In order to realize safe, accurate and efficient control of battery charging and discharging, the battery is provided with electrical elements such as busbars, sampling structures, battery management systems and high-voltage distribution units, which are electrically connected to the battery monomers to control the battery monomers.

[0007] Due to the different sizes and shapes of various electrical elements, space in the containing box is also occupied. Therefore, the overall size of the containing box is easily increased, which is not conducive to the adaptability of the battery. CONTENT OF THE INVENTION

[0008] Therefore, embodiments of the present disclosure aim to provide a battery and an electric device which are beneficial to improve space utilization.

[0009] To achieve the above-mentioned purpose, the technical solution of the embodiments of the present disclosure is as follows:

[0010] The present disclosure provides a battery, comprising:

[0011] The containing box is provided with a containing cavity, and the containing box comprises a first box wall;

[0012] The battery assembly includes a protruding portion;

[0013] The first box wall is provided with a receiving portion, and at least part of the protruding portion is received in the receiving portion.

[0014] In the battery, the receiving portion is arranged on the first box wall, which is beneficial to adapt the shape of the space in the receiving box to the outer contour shape of the battery assembly, reduce the requirement on the arrangement of each component in the battery assembly, reduce the overall size and volume of the receiving box, improve the space utilization in the receiving box, reduce the overall volume of the battery, and improve the energy density of the battery.

[0015] In some embodiments, a part of the projection of the battery assembly is located outside the projection of the receiving portion along the thickness direction of the first box wall. In this way, the battery assembly can make full use of the space in the receiving cavity, improve the space utilization of the battery, and improve the capacity of the battery.

[0016] In some embodiments, the battery assembly further includes a plurality of battery monomers, and the battery monomers include a shell having a first shell wall, and the protruding portion is arranged on the first shell wall. In this way, a part of the first shell wall can enter the receiving portion, thereby increasing the volume of the battery monomer, adapting the space in the receiving box to battery monomers with different outer contour shapes, arranging the battery monomers with different outer contour shapes more compactly in the receiving box, and improving the energy density of the battery.

[0017] In some embodiments, the battery assembly further includes a busbar, the battery monomers further include a pole, the pole is arranged on the first shell wall, the busbar is electrically connected to the poles of two battery monomers, the protruding portion includes the busbar, and at least part of the busbar is located in the receiving portion. In this way, the space in the receiving box is adapted to the arrangement relationship between the busbar and the battery monomer, so that the shape of the receiving cavity can be adapted to the shape of the battery monomer, and the gap between the inner wall of the receiving cavity and the battery monomer is reduced, thereby improving the space utilization of the battery.

[0018] In some embodiments, at least part of the pole is received in the receiving portion. In this way, the busbar connected to the pole is more reasonably arranged in the receiving portion, thereby improving the space utilization in the receiving cavity and improving the capacity of the battery.

[0019] In some embodiments, the pole of at least two battery cells is located in the same accommodating part. In this way, it is beneficial to realize the electrical connection of the poles of different battery cells in one accommodating part through the busbar, and it is beneficial to make the structure of the battery more compact.

[0020] In some embodiments, the distance between the inner wall of the accommodating part and the busbar along the first direction is not less than 1% of the size of the accommodating part along the first direction, and the first direction is perpendicular to the thickness direction of the first box wall. In this way, it is beneficial to reduce the probability of contact between the busbar and the inner wall of the accommodating part, so that the battery assembly can function normally.

[0021] In some embodiments, the distance between the inner wall of the accommodating part and the busbar along the first direction is in the range of 2% to 10% of the size of the accommodating part along the first direction. In this way, it is further beneficial to reduce the probability of contact between the busbar and the inner wall of the accommodating part.

[0022] In some embodiments, the battery comprises an insulating member, which is arranged on the inner wall of the accommodating part. In this way, by using the insulation performance of the insulating member, the risk of charge transfer between the battery assembly and the accommodating part can be reduced, and the risk of short circuit of the battery during use can be reduced.

[0023] In some embodiments, the battery assembly comprises a battery cell, the battery cell comprises a pole, and the insulating member is arranged opposite to the pole. In this way, the probability of contact between the pole and the accommodating box due to the relative movement between the battery assembly and the accommodating part can be reduced, and the risk of short circuit of the battery cell due to the contact between the pole and the accommodating box can be reduced.

[0024] In some embodiments, the first shell wall comprises a protrusion, the protruding part comprises the protrusion, and at least part of the protrusion is located in the accommodating part. In this way, by locating the protrusion in the accommodating part, it is beneficial to reduce the distance between the other part of the first shell wall and the inner wall of the accommodating cavity, beneficial to reduce the volume of the accommodating cavity, and further beneficial to reduce the three-dimensional size of the accommodating box, reduce the overall volume of the battery, and improve the energy density and space utilization of the battery.

[0025] In some embodiments, the protrusion is provided with a pole. In this way, it is beneficial to improve the space utilization in the protrusion, reduce the redundant volume in the shell, make the space in the battery cell more compact, thereby reducing the overall volume and the outer contour size of the battery cell, and further improving the number of battery cells that can be accommodated in the battery, and improving the energy density and space utilization of the battery.

[0026] In some embodiments, the number of the pole posts is two and the polarities of the two pole posts are opposite, and the two pole posts are arranged on the same protrusion. In this way, only one protrusion needs to be manufactured to provide mounting positions for the two pole posts, which helps to reduce the manufacturing steps of the first shell wall and reduce the production cost.

[0027] In some embodiments, the number of the pole posts is two and the polarities of the two pole posts are opposite, and the two pole posts are arranged on the two protrusions respectively. In this way, on the one hand, the volume of a single protrusion can be reduced, so that the structure is more compact, and the volume of the battery can be reduced; on the other hand, the two pole posts are spaced apart, which reduces the risk of short circuit between the two pole posts and improves the use safety of the battery monomer.

[0028] In some embodiments, the two pole posts are arranged in the length direction of the first shell wall. In this way, the distance between the two protrusions is increased as much as possible, so that the part of the first shell wall between the two protrusions forms a large-area flat area, which is convenient for arranging other components with large outer contour size in the battery in the case of a certain internal volume of the battery, and provides convenience for the arrangement of other components in the battery. At the same time, the volume of the battery can be reduced, the space utilization in the battery can be improved, and the volume of the battery can be more compact.

[0029] In some embodiments, the two pole posts are arranged in the width direction of the first shell wall. In this way, the two pole posts are arranged in the width direction of the first shell wall, which helps to shorten the distance between the pole posts with different polarities between adjacent two battery monomers, so as to reduce the size of the busbar, and further reduce the size of the battery.

[0030] In some embodiments, the battery monomer further comprises an electrode assembly accommodated in the shell, a part of the first shell wall is recessed to form an avoiding groove, the avoiding groove is located on the side of the protrusion close to the electrode assembly, and a part of the electrode assembly is located in the avoiding groove. In this way, the first shell wall can be as close to the electrode assembly as possible under the condition of a certain size of the first shell wall, so that the volume in the shell can be effectively reduced, and as much as possible part of the electrode assembly can be inserted into the avoiding groove, which helps to reduce the redundant volume in the battery monomer and make the space in the battery monomer more compact, so as to reduce the overall volume and the outer contour size of the battery monomer, and further improve the number of battery monomers that can be accommodated in the battery, and improve the energy density and space utilization of the battery.

[0031] In some embodiments, the electrode assembly comprises a main body and a tab, the tab is arranged on one side edge of the main body and electrically connected with the main body, and at least a part of the tab is located in the avoiding groove.

[0032] In some embodiments, at least part of the tab is located in the accommodating portion, so as to improve the space utilization of the space in the accommodating box and make the shape of the part of the battery monomer located outside the accommodating portion more regular.

[0033] In some embodiments, the battery monomer further comprises a pole post arranged on the first shell wall, the electrode assembly further comprises a transition sheet, the tab and the pole post are electrically connected through the transition sheet, and at least part of the tab is located in the accommodating portion, so as to improve the space utilization of the space in the accommodating box and make the shape of the part of the battery monomer located outside the accommodating portion more regular.

[0034] In some embodiments, at least part of the transition sheet is located in the accommodating portion, so that part or all of the transition sheet is located in the accommodating portion, which can improve the space utilization of the space in the accommodating box and make the shape of the part of the battery monomer located outside the accommodating portion more regular.

[0035] In some embodiments, part of the main body is located in the avoiding groove, so as to improve the space utilization of the space in the accommodating box.

[0036] In some embodiments, the shell comprises a cover plate and a shell body, the cover plate covers the opening of the shell body, and the protrusion is arranged on the cover plate, so that part of the electrode assembly can directly enter or exit the space of the protrusion during the process of assembling or disassembling the cover plate, thereby improving the efficiency of assembling or disassembling the battery monomer.

[0037] In some embodiments, the protrusion is arranged on the shell body, so that part of the electrode assembly can be placed in the space of the protrusion during the process of assembling the battery monomer, and the electrode assembly is stopped by the protrusion, thereby reducing the probability that the electrode assembly cannot function due to movement during the process of assembling or disassembling the cover plate.

[0038] In some embodiments, the number of protrusions on the first shell wall is two, and the two protrusions are located at one end of the opposite ends of the first shell wall. In this way, each protrusion can be electrically connected to the pole post and the tab of the same polarity, thereby reducing the probability of short circuit; the part of the first shell wall between the two protrusions forms a large-area flat region, thereby facilitating the arrangement of other components with large outer contour dimensions in the battery under the condition of a certain battery volume, providing convenience for the arrangement of other components in the battery, and reducing the volume of the battery, improving the space utilization of the battery, and making the battery more compact.

[0039] In some embodiments, the protrusion is located at one end of the first shell wall along the length direction of the first shell wall. In this way, the area of the region of the first shell wall located at the other end of the first shell wall along the length direction and away from the protrusion can be maximized, thereby facilitating the arrangement of other components with large outer contour sizes in the battery in the region, providing convenience for the arrangement of other components in the battery, while facilitating the reduction of the volume of the battery, improving the space utilization rate of the battery, and making the volume of the battery more compact.

[0040] In some embodiments, the protrusion is located at one end of the first shell wall along the length direction of the first shell wall. In this way, the area of the region of the first shell wall located at the other end of the first shell wall along the length direction and away from the protrusion can be maximized, thereby facilitating the arrangement of other components with large outer contour sizes in the battery in the region, providing convenience for the arrangement of other components in the battery, while facilitating the reduction of the volume of the battery, improving the space utilization rate of the battery, and making the volume of the battery more compact.

[0041] In some embodiments, the protrusion is located at the center of the first shell wall along the length direction of the first shell wall. In this way, it is beneficial to make the structure of the battery monomer symmetric about the first central plane, facilitating the adjustment of the placement direction when arranging multiple battery monomers in the battery, to improve the adaptability of the battery monomers.

[0042] In some embodiments, the distance between the center of the first shell wall along the length direction of the first shell wall and the center of the protrusion along the length direction of the first shell wall is a first distance, and the ratio of the first distance to the length dimension of the first shell wall is greater than 0 and does not exceed 47.5%. In this way, it is beneficial to form a larger area of the flat region of the first shell wall along the length direction of the first shell wall, thereby facilitating the arrangement of other components with large outer contour sizes in the battery in the region, providing convenience for the arrangement of other components in the battery.

[0043] In some embodiments, the ratio of the first distance to the length dimension of the first shell wall ranges from 40% to 47.5%. In this way, it is further beneficial to form a larger area of the flat region on both sides or one side of the protrusion along the length direction of the first shell wall, thereby facilitating the arrangement of other components with large outer contour sizes in the battery in the region.

[0044] In some embodiments, the center of the first shell wall along the width direction of the first shell wall coincides with the center of the protrusion along the width direction of the first shell wall. In this way, it is further beneficial to form a larger area of the flat region in the width direction of the first shell wall, thereby facilitating the arrangement of other components with large outer contour sizes in the battery in the region.

[0045] In some embodiments, a distance between a center position of the first shell wall along a width direction of the first shell wall and a center position of the protrusion along the width direction of the first shell wall is a second distance, a ratio of the second distance to a width dimension of the first shell wall is greater than 0 and is not more than 25%. In this way, it is beneficial to leave a certain redundancy for the size of the protrusion along the width direction, so as to facilitate the sealing between the first shell wall and other parts.

[0046] In some embodiments, a length dimension of the battery cell is not less than 350 mm, which is beneficial to the electrochemical reaction of the electrode assembly and the electrolyte in the battery cell to store or release sufficient electric energy, so as to meet the demand for the total electric energy in the battery;

[0047] In some embodiments, a width dimension of the battery cell ranges from 5 mm to 50 mm, so as to facilitate the size of the battery cell to be convenient for carrying and better adapt to the sizes of different accommodating boxes;

[0048] In some embodiments, a height dimension of the battery cell ranges from 80 mm to 200 mm, so as to facilitate the size of the battery cell to be convenient for carrying and better adapt to the sizes of different accommodating boxes.

[0049] In some embodiments, a length direction of the protrusion is the same as a length direction of the first shell wall, and a ratio of a length dimension of the protrusion to a length dimension of the first shell wall ranges from 2.5% to 97.5%, so as to facilitate the space in the protrusion to meet the requirement of accommodating a part of the electrode assembly;

[0050] In some embodiments, a width direction of the protrusion is the same as a width direction of the first shell wall, and a ratio of a width dimension of the protrusion to a width dimension of the first shell wall ranges from 25% to 100%, so as to facilitate the space in the protrusion to meet the requirement of accommodating a part of the electrode assembly;

[0051] In some embodiments, a height dimension of the protrusion is not more than 45 mm, so as to facilitate the space in the protrusion to meet the requirement of accommodating a part of the electrode assembly.

[0052] In some embodiments, a length direction of the protrusion is the same as a length direction of the first shell wall, and a ratio of a length dimension of the protrusion to a length dimension of the first shell wall ranges from 5% to 40%, so as to more facilitate the space in the protrusion to meet the requirement of accommodating a part of the electrode assembly;

[0053] In some embodiments, a width direction of the protrusion is the same as a width direction of the first shell wall, and a ratio of a width dimension of the protrusion to a width dimension of the first shell wall ranges from 60% to 90%, so as to more facilitate the space in the protrusion to meet the requirement of accommodating a part of the electrode assembly;

[0054] And / or, the height of the protrusion ranges from 2mm to 10mm, so as to further facilitate the space in the protrusion to meet the requirement of accommodating part of the electrode assembly.

[0055] In some embodiments, the battery cell comprises an explosion-proof valve, which is located on the protrusion, so as to facilitate the space utilization of the space in the protrusion, and make the space in the battery cell more compact, thereby facilitating the reduction of the overall volume and the outer contour size of the battery cell; or, the explosion-proof valve and the protrusion are located on the first shell wall, and the explosion-proof valve is spaced apart from the protrusion; so as to facilitate the reduction of the volume of the protrusion; by taking advantage of the larger arrangement area on the first shell wall, on the one hand, it is beneficial to arrange the explosion-proof valve with larger opening flow, thereby further reducing the probability of explosion of the battery cell; on the other hand, it is beneficial to make the ejection direction of the high-temperature gas flow after the explosion-proof valve opens adapt to the arrangement mode of each battery cell in the battery, thereby improving the safety of the battery in use.

[0056] In some embodiments, the battery cell comprises an explosion-proof valve, which is located on the protrusion, so as to facilitate the space utilization of the space in the protrusion, and make the space in the battery cell more compact, thereby facilitating the reduction of the overall volume and the outer contour size of the battery cell; or, the explosion-proof valve and the protrusion are located on the first shell wall, and the explosion-proof valve is spaced apart from the protrusion; so as to facilitate the reduction of the volume of the protrusion; by taking advantage of the larger arrangement area on the first shell wall, on the one hand, it is beneficial to arrange the explosion-proof valve with larger opening flow, thereby further reducing the probability of explosion of the battery cell; on the other hand, it is beneficial to make the ejection direction of the high-temperature gas flow after the explosion-proof valve opens adapt to the arrangement mode of each battery cell in the battery, thereby improving the safety of the battery in use.

[0057] In some embodiments, the battery cell comprises an explosion-proof valve, which is located on the protrusion, so as to facilitate the space utilization of the space in the protrusion, and make the space in the battery cell more compact, thereby facilitating the reduction of the overall volume and the outer contour size of the battery cell; or, the explosion-proof valve and the protrusion are located on the first shell wall, and the explosion-proof valve is spaced apart from the protrusion; so as to facilitate the reduction of the volume of the protrusion; by taking advantage of the larger arrangement area on the first shell wall, on the one hand, it is beneficial to arrange the explosion-proof valve with larger opening flow, thereby further reducing the probability of explosion of the battery cell; on the other hand, it is beneficial to make the ejection direction of the high-temperature gas flow after the explosion-proof valve opens adapt to the arrangement mode of each battery cell in the battery, thereby improving the safety of the battery in use.

[0058] In some embodiments, one of the battery cells comprises a plurality of protrusions, and the plurality of protrusions are located in the same accommodating portion. So as to reduce the number of protrusions, thereby reducing the manufacturing steps of the protrusions, reducing the production cost, reducing the difficulty of assembling the protrusions and the accommodating portion in the process of assembling the battery, and improving the efficiency of the manufacturing operation.

[0059] In some embodiments, the protrusions of a plurality of battery cells are located in the same accommodating portion. So as to further reduce the number of protrusions, thereby reducing the production cost, reducing the difficulty of assembling the protrusions and the accommodating portion in the process of assembling the battery, and improving the efficiency of the manufacturing operation; at the same time, it is beneficial to arrange sampling members, busbars and other components in the same accommodating portion to electrically connect each battery cell and obtain various information of each battery cell.

[0060] In some embodiments, one of the battery cells includes a plurality of the protrusions, the first box wall includes a plurality of the accommodating portions, and each of the protrusions in the single battery cell is located in a different accommodating portion. In this way, the electrical connection of each battery cell in the same group is achieved through the same accommodating portion.

[0061] In some embodiments, the plurality of battery cells are arranged along a first direction, one of the battery cells includes a plurality of the protrusions, and at least part of the protrusions are located at one end of the battery cell along the first direction. In two adjacent battery cells along the first direction, the protrusions located at the end of each battery cell close to each other are located in the same accommodating portion. In this way, the probability of short circuit caused by the electrical connection between the equal elements of the pole column arranged on the protrusions due to miscontacting or the like is reduced, and the use safety of the battery is improved.

[0062] In some embodiments, the battery assembly further includes a sampling member, at least part of the sampling member is accommodated in the accommodating portion. In this way, the shape of the accommodating cavity is more suitable for the shape of the shell of the battery cell, and the volume of the shell is increased under the premise of a certain volume of the accommodating cavity, thereby increasing the energy density of the battery.

[0063] And / or, the battery assembly further includes a battery management system, at least part of the battery management system is accommodated in the accommodating portion. In this way, the shape of the accommodating portion can better adapt to the outer contour shape of the battery management system, and the arrangement requirement of the battery management system is reduced; the overall size and volume of the accommodating box are reduced, and the space utilization in the accommodating box is improved.

[0064] And / or, the battery assembly further includes a relay, at least part of the relay is accommodated in the accommodating portion. In this way, the shape of the accommodating portion can better adapt to the outer contour shape of the relay, and the arrangement requirement of the relay is reduced; the overall size and volume of the accommodating box are reduced, and the space utilization in the accommodating box is improved.

[0065] And / or, the battery assembly further includes a high-voltage power distribution unit, at least part of the high-voltage power distribution unit is accommodated in the accommodating portion. In this way, the shape of the accommodating portion can better adapt to the outer contour shape of the high-voltage power distribution unit, and the arrangement requirement of the high-voltage power distribution unit is reduced; the overall size and volume of the accommodating box are reduced, and the space utilization in the accommodating box is improved.

[0066] And / or, the battery assembly further comprises a high / low voltage wire harness, at least part of the high / low voltage wire harness is accommodated in the accommodation portion, so that the shape of the accommodation portion can better adapt to the layout of the high / low voltage wire harness, reducing the risk of damage caused by bending and extrusion of the high / low voltage wire harness, and facilitating the reduction of the overall size and volume of the accommodation box and the improvement of the space utilization in the accommodation box.

[0067] In some embodiments, the accommodation portion comprises a first accommodation sub-portion and a second accommodation sub-portion, part of the protruding portion is accommodated in the space of the first accommodation sub-portion, and another part of the protruding portion is accommodated in the space of the second accommodation sub-portion, so that the shape of the first accommodation sub-portion and the shape of the second accommodation sub-portion can be adapted according to the actual outer contour shape of the protruding portion, so as to facilitate the reduction of the outer contour size and the overall volume of the accommodation portion, so as to make the structure of the battery more compact, reduce the overall volume of the battery, and improve the energy density of the battery.

[0068] In some embodiments, the outer surface of the first box wall is protruded to form a boss, and the boss is located on the side of the accommodation portion away from the accommodation cavity. In this way, the first box wall is provided with a protruding region with a consistent thickness with other regions, which is conducive to the overall size of the first box wall, and further conducive to the reduction of the three-dimensional size of the accommodation box and the overall volume of the battery, and facilitates the improvement of the energy density and space utilization of the battery.

[0069] In some embodiments, the length direction of the boss is the same as the length direction of the accommodation cavity, and the length dimension of the boss is the same as the length dimension of the accommodation cavity, so as to facilitate the increase of the size of the accommodation portion along the length direction of the battery as much as possible, thereby facilitating the size and volume of the accommodation portion to adapt to different sizes and shapes of the protruding portion.

[0070] Alternatively, the length direction of the boss is the same as the width direction of the accommodation cavity, and the length dimension of the boss is the same as the width dimension of the accommodation cavity, so as to facilitate the increase of the size of the accommodation portion along the width direction of the battery as much as possible, thereby facilitating the size and volume of the accommodation portion to adapt to different sizes and shapes of the protruding portion.

[0071] In some embodiments, the width dimension of the boss is not more than 500 mm, so that, on the one hand, the surface of the first box wall has a larger flat region to adapt to other components in the electric device, reducing the adverse effect of the boss on the arrangement of other components in the electric device; on the other hand, the adverse effect of the boss due to the reduction of the structural strength caused by the large width dimension is reduced, and the probability of damage to components in the accommodation portion caused by deformation of the boss is reduced.

[0072] And / or, the height dimension of the boss is not more than 300mm, so as to adapt to other components in the electrical device, reduce the adverse effect of the boss on the arrangement of other components in the electrical device, and reduce the probability of deformation and bending of the boss due to shear stress perpendicular to the height direction, which damages the protruding part in the accommodating part.

[0073] In some embodiments, the width dimension of the boss ranges from 50mm to 300mm, so as to facilitate the space in the accommodating part to meet the arrangement requirement of the protruding part.

[0074] And / or, the height dimension of the boss ranges from 5mm to 100mm, so as to facilitate the space in the accommodating part to meet the arrangement requirement of the protruding part.

[0075] In some embodiments, the battery assembly further comprises a battery cell, the battery cell comprises a shell, the shell has a first shell wall, the first shell wall comprises a protrusion, at least part of the protrusion is located in the accommodating part, and the height dimension of the protrusion is not more than 77% of the height dimension of the boss. In this way, on the one hand, it is beneficial to make the protrusion and the accommodating part spaced apart along the height direction of the battery, so as to reduce the probability of damage caused by direct abutment therebetween, and facilitate the arrangement of other components of the battery assembly in the accommodating part; on the other hand, it makes the thickness of the boss better protect the protrusion.

[0076] In some embodiments, the height dimension of the protrusion accounts for 36% to 53% of the height dimension of the boss. In this way, it further makes the size of the space in the accommodating part meet the requirement of arranging other components of the battery assembly, and further facilitates the boss to have sufficient strength to protect the protrusion.

[0077] In some embodiments, the height dimension of the protruding part is not more than 94% of the height dimension of the boss. In this way, it is beneficial to reduce the probability of abutment between the protruding part and the boss along the vertical direction, and reduce the probability of damage caused by abutment therebetween.

[0078] In some embodiments, the height dimension of the protruding part accounts for 74% to 86% of the height dimension of the boss. In this way, it is further beneficial to reduce the probability of abutment between the protruding part and the boss along the vertical direction, and improve the space utilization of the protruding part in the accommodating part.

[0079] In some embodiments, part or all of the boss is in a detachable configuration. In this way, by detaching part or all of the boss, the battery assembly in the battery can be inspected and repaired through the formed channel without completely disassembling the box body, thereby simplifying the operation steps.

[0080] In some embodiments, the first box wall comprises a box wall body and a mounting plate, the box wall body is provided with a through hole, the through hole is communicated with the accommodating cavity, the edge of the through hole is provided with a mounting step extending away from the accommodating cavity, and the mounting plate is detachably covered on the mounting step to cover the through hole, the mounting step and the mounting plate jointly form the boss, and the inner wall of the through hole and the surface of the mounting plate facing the accommodating cavity jointly form the accommodating portion. In this way, after the boss is disassembled, the battery assembly in the through hole and the accommodating cavity can be maintained through the opening of the through hole.

[0081] In some embodiments, the battery comprises a first adhesive layer, and the first adhesive layer is adhered between the inner wall of the accommodating cavity and the battery assembly. In this way, the inner wall of the accommodating cavity and the battery assembly are bonded by the adhesion of the first adhesive layer, so that the relative position between the battery assembly and the box can be kept fixed; at the same time, the first adhesive layer is formed by coating adhesive, which is conducive to improving the work efficiency.

[0082] In some embodiments, the battery comprises a first adhesive layer, the accommodating portion is located at the top side of the accommodating box along the height direction, the first shell wall is the top wall of the battery monomer along the height direction of the accommodating cavity, and the first adhesive layer is adhered between the top side inner wall of the accommodating cavity along the height direction of the accommodating cavity and the first shell wall. In this way, the first adhesive layer can play a separating and sealing effect to block the objects in the accommodating portion and the accommodating cavity from entering each other, and at the same time, the first shell wall can be used to coat as much adhesive as possible to form the first adhesive layer to improve the adhesion and fixation effect;

[0083] And / or, the first adhesive layer is adhered between the bottom side inner wall of the accommodating cavity along the height direction of the accommodating cavity and the bottom wall of the battery monomer along the height direction of the accommodating cavity. In this way, during the process of coating adhesive, the un-solidified adhesive can be kept away from the pole, the sampling member and the busbar parts, thereby reducing the adverse effects of the adhesive on the normal work of the parts in the battery, and at the same time, the adhesive can be diffused more uniformly by the gravity of the battery monomer.

[0084] In some embodiments, the battery comprises a temperature control assembly, and the temperature control assembly is clamped between the inner wall of the accommodating cavity and the battery assembly. In this way, the temperature control assembly can absorb heat generated by the battery assembly during operation to reduce the working temperature of the battery assembly, thereby improving the safety of the battery; at the same time, the temperature control assembly can directly radiate part of the heat to the outside through the box wall of the accommodating box, thereby increasing the heat dissipation area and improving the temperature control effect.

[0085] In some embodiments, the temperature control assembly is located between the inner wall of the accommodating cavity and the first shell wall. In this way, the advantage of the large area of the first shell wall can be better utilized, the contact area between the temperature control assembly and the battery monomer is increased, the heat generated during the operation of the battery can be more effectively transferred to the tank wall and radiated to the outside, and thus the temperature control effect is improved.

[0086] In some embodiments, the temperature control assembly is located between the top inner wall of the accommodating cavity along the height direction of the accommodating cavity and the top surface of the battery assembly along the height direction of the accommodating cavity. In this way, the temperature control assembly is not affected by the gravity of the battery assembly to affect the realization of the temperature control function.

[0087] In some embodiments, the temperature control assembly is located between the bottom inner wall of the accommodating cavity along the height direction of the accommodating cavity and the bottom surface of the battery assembly along the height direction of the accommodating cavity. In this way, the probability of interference between the arrangement of the temperature control assembly and the protruding portion is reduced.

[0088] In some embodiments, the battery comprises a second adhesive layer adhered between the inner wall of the accommodating cavity and the outer surface of the temperature control assembly. In this way, the relative position between the temperature control assembly and the accommodating tank is fixed, and the probability of relative movement between the two resulting in friction damage is reduced. At the same time, the temperature control assembly can directly transfer heat to the accommodating tank and radiate to the outside.

[0089] In some embodiments, the battery comprises a third adhesive layer adhered between the inner wall of the accommodating cavity and the outer surface of the battery assembly. In this way, the relative position between the temperature control assembly and the battery assembly is fixed, the probability of relative movement between the two resulting in friction damage is reduced, and heat can be better transferred between the temperature control assembly and the battery assembly, improving the temperature control effect.

[0090] The embodiments of the present disclosure also provide a power utilization device, which comprises the battery of any one of the foregoing embodiments as a power supply of the power utilization device. In this way, by setting the cooperation between the accommodating portion and the protruding portion, the overall volume of the power utilization device is reduced, and the structure of the power utilization device is more compact.

[0091] The embodiments of the present disclosure also provide a power utilization device, which is a vehicle, the vehicle comprising a seat and the battery of any one of the foregoing embodiments, and the boss is located on the side of the accommodating box facing the seat. In this way, the volume of the battery in the vehicle is increased, thereby improving the battery capacity and the cruising range of the vehicle. Meanwhile, the flat wall of the accommodating box is directed towards the ground, which makes the bottom surface of the vehicle more flat, reduces the wind resistance coefficient of the vehicle and improves the ground clearance of the vehicle, avoiding the situation that the boss increases the wind resistance and causes the battery to be damaged due to collision with foreign matters on the road during driving.

[0092] In some embodiments, the vehicle comprises a vehicle body part, the bottom side of the vehicle body part is open, and the battery is arranged at the open position of the vehicle body part to jointly define a passenger space with the vehicle body part, and the seat is located in the passenger space. In this way, the volume of the battery is increased under the condition that the three-dimensional size of the vehicle is limited, and the space utilization in the passenger space is improved.

[0093] In some embodiments, the vehicle comprises a chassis, the vehicle body part is arranged on the chassis, the chassis comprises the battery, and the first wall forms the bottom plate of the passenger space. In this way, the overall structural strength of the chassis is improved by the battery, the first wall as the bottom plate of the passenger space improves the space utilization in the vehicle, and the structural strength of the entire passenger space structure is improved, thereby improving the safety of the vehicle.

[0094] In some embodiments, in the projection perpendicular to the vertical direction, the projection of part or all of the boss is located in the projection range of the seat. In this way, the boss utilizes the space below the seat, reduces the probability of the passenger touching the boss during riding, thereby reducing the invasion of the normal activity space of the passenger by the boss, improving the user experience, and improving the space utilization in the vehicle.

[0095] In some embodiments, the number of the seats is a plurality, and the seats are spaced to form at least one row, the seats in the same row are spaced to form a first gap along the width direction of the vehicle, and the boss comprises a first boss, part or all of the first boss is located in the first gap.

[0096] In this way, the boss can utilize the space in the first gap, which reduces the probability of the passenger touching the boss during riding, reduces the interference of the boss to the normal activity of the passenger, and improves the space utilization in the vehicle.

[0097] In some embodiments, the plurality of seats are arranged in at least two rows spaced along a length direction of the vehicle, and the first protrusion extends along the length direction of the vehicle to below the seats in the adjacent row. In this way, on the one hand, the first protrusion extends along the length direction of the vehicle, and with the projection area of the first protrusion in the vertical direction being constant, the size of the first protrusion in the width direction of the vehicle is reduced, thereby reducing the interference of the first protrusion with the passengers, improving the user experience, reducing the probability of interference with the passengers, and improving the space utilization of the battery in the vehicle interior. On the other hand, the first protrusion can make more use of the space in the first gap, further improving the space utilization in the vehicle.

[0098] In some embodiments, the protrusion includes a second protrusion, and the two second protrusions extend along the length direction of the vehicle and are located on one side of the seats in the width direction of the vehicle. In this way, the interference of the second protrusion with the legs and feet of the passengers is reduced, and the user experience of the passengers is improved.

[0099] In some embodiments, the number of second protrusions is two, and the two second protrusions are respectively located at one end of the battery in the width direction of the vehicle, and the seats are located between the two second protrusions. In this way, the space for the legs and feet of the passengers to move is increased, the interference of the second protrusion with the legs and feet of the passengers is further reduced, and the space at the edge of the vehicle in the width direction is effectively utilized.

[0100] In some embodiments, the second protrusions are spaced apart from the seats in the width direction of the vehicle. In this way, the movement space of the legs and feet of the passengers is increased, and the user experience is improved.

[0101] In some embodiments, part of the second protrusion is located below the seats. In this way, the size of the battery and the vehicle in the width direction is reduced, and the structure of the battery and the vehicle is more compact.

[0102] In some embodiments, the protrusion includes one or more third protrusions, the third protrusions extend along the width direction of the vehicle, and at least part of the third protrusions are located below the seats in the same row. In this way, the third protrusions can make full use of the space below the seats in the width direction of the vehicle, and at the same time, the third protrusions can reduce the occupation of the space between the two adjacent rows of seats, reduce the interference with the passengers, and improve the user experience.

[0103] In some embodiments, the seat comprises a seat cushion, at least a portion of the seat cushion is spaced apart from the battery along a height direction of the vehicle to form a second gap, and at least a portion of the boss is located in the second gap and is spaced apart from the seat cushion along a vertical direction. In this way, the probability of damage to the boss due to the pressure of the occupant sitting on the boss can be reduced.

[0104] In some embodiments, the seat comprises a leg, the seat cushion and the battery are spaced apart along a vertical direction to form the second gap, and the leg is connected between the seat cushion and the battery. In this way, the seat cushion and the boss are spaced apart, the shape of the seat cushion is regular, the seat cushion is easy to place, and the heat generated during the operation of the battery is easy to release. In addition, the second gap is easy to check, disassemble, maintain, and the occupant's feet are easy to stretch into the second gap, the occupant's sitting posture is easy to stretch, and the comfort of the seat is improved.

[0105] In some embodiments, the number of legs is a plurality, the plurality of legs are spaced apart along a width direction of the vehicle, and part or all of the boss is located between two adjacent legs along the width direction of the vehicle. In this way, the boss is arranged in the space between the two legs, the space utilization of the battery in the vehicle interior space is improved, and the capacity of the battery is increased.

[0106] In some embodiments, the seat cushion comprises a cushion, and the boss is embedded in the cushion to support the seat cushion along the height direction of the vehicle. In this way, the structure of the seat is simplified, the utilization of the interior space of the seat is improved, and the production cost is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0107] Figure 1 A schematic view of a vehicle in an embodiment of the present disclosure;

[0108] Figure 2 A schematic view of a battery in a first embodiment of the present disclosure;

[0109] Figure 3 A schematic view of a battery in a second embodiment of the present disclosure; Figure 2 A schematic view of a cross section of the second embodiment;

[0110] Figure 4 A schematic view of a battery in a third embodiment of the present disclosure; Figure 3 An enlarged schematic view of position A in the second embodiment;

[0111] Figure 5 A partial cross-sectional enlarged schematic view of a battery in a second embodiment of the present disclosure, the cross-sectional enlarged position is the same as position A in the second embodiment; Figure 3

[0112] Figure 6 A schematic view of a battery in a third embodiment of the present disclosure;

[0113] ​Figure 7 Figure 2 is a cross-sectional view of the B-B position of the embodiment of Figure 1 ; Figure 6 Figure 3 is an enlarged view of the C position of the embodiment of Figure 1 ;

[0114] Figure 8 Figure 4 is an enlarged view of the C position of the embodiment of Figure 1 ; Figure 7 Figure 5 is an enlarged view of the C position of the embodiment of Figure 1 ;

[0115] Figure 9 Figure 6 is a partial cross-sectional enlarged view of the battery in the fourth embodiment of the present disclosure, which has the same cross-sectional enlarged position as the C position in Figure 1 ; Figure 6 Figure 7 is a partial cross-sectional enlarged view of the battery in the fourth embodiment of the present disclosure, which has the same cross-sectional enlarged position as the C position in Figure 1 ;

[0116] Figure 10 Figure 8 is an exploded view of the embodiment of Figure 1 ; Figure 5 Figure 9 is an exploded view of the embodiment of Figure 1 ;

[0117] Figure 11 Figure 10 is a schematic view of the battery cell in the fifth embodiment of the present disclosure;

[0118] Figure 12 Figure 11 is an exploded view of the embodiment of Figure 1 ; Figure 11 Figure 12 is an exploded view of the embodiment of Figure 1 ;

[0119] Figure 13 Figure 13 is a partial cross-sectional view of the embodiment of Figure 1 ; Figure 11 Figure 14 is a partial cross-sectional view of the embodiment of Figure 1 ;

[0120] Figure 14 Figure 15 is a schematic view of the battery cell in the sixth embodiment of the present disclosure;

[0121] Figure 15 Figure 16 is an exploded view of the embodiment of Figure 1 ; Figure 14 Figure 17 is an exploded view of the embodiment of Figure 1 ;

[0122] Figure 16 Figure 18 is a partial cross-sectional view of the embodiment of Figure 1 ; Figure 14 Figure 19 is a partial cross-sectional view of the embodiment of Figure 1 ;

[0123] Figure 17 Figure 20 is a schematic view of the battery cell in the seventh embodiment of the present disclosure;

[0124] Figure 18 Figure 21 is a schematic view of the battery cell in the eighth embodiment of the present disclosure;

[0125] Figure 19 Figure 22 is a schematic view of the battery cell in the ninth embodiment of the present disclosure;

[0126] Figure 20 Figure 23 is a schematic view of the positions between the first central plane, the second central plane, the third central plane and the fourth central plane in one embodiment of the present disclosure;

[0127] Figure 21 Figure 24 is a schematic view of the relationship between the total height of the protrusion and the battery cell in one embodiment of the present disclosure;

[0128] Figure 22Schematic diagram of a battery cell in the tenth embodiment of the present disclosure;

[0129] Figure 23 Schematic diagram of a battery cell in the eleventh embodiment of the present disclosure;

[0130] Figure 24 Schematic diagram of a battery cell in the twelfth embodiment of the present disclosure;

[0131] Figure 25 Schematic diagram of a battery cell in the thirteenth embodiment of the present disclosure;

[0132] Figure 26 Schematic diagram of a battery in the fourteenth embodiment of the present disclosure;

[0133] Figure 27 It is Figure 26 Sectional view of the embodiment in

[0134] Figure 28 It is Figure 26 Exploded view of the embodiment in

[0135] Figure 29 Schematic diagram of a battery in the fifteenth embodiment of the present disclosure;

[0136] Figure 30 It is Figure 29 Sectional view of the embodiment in D-D in

[0137] Figure 31 It is Figure 30 Enlarged view of position E in

[0138] Figure 32 Partial sectional enlarged view of a battery in the sixteenth embodiment of the present disclosure, and the sectional enlarged position is the same as the position E in Figure 30 in

[0139] Figure 33 It is Figure 29 Exploded view of the embodiment in

[0140] Figure 34 Schematic diagram of a battery in the seventeenth embodiment of the present disclosure;

[0141] Figure 35 It is Figure 34 [[ID=​​​​​​​​​​​​Figure 38 is Figure 37 exploded view of the embodiment;

[0145] Figure 39 is a schematic view of a battery in the nineteenth embodiment of the present disclosure;

[0146] Figure 40 is Figure 39 exploded view of the embodiment;

[0147] Figure 41 is a schematic view of a battery in the twentieth embodiment of the present disclosure;

[0148] Figure 42 is Figure 41 cutaway view of the embodiment at F-F position;

[0149] Figure 43 is Figure 41 exploded view of the embodiment;

[0150] Figure 44 is a schematic view of a battery in the twenty-first embodiment of the present disclosure;

[0151] Figure 45 is Figure 44 cutaway view of the embodiment at F-F position;

[0152] Figure 46 is Figure 45 partial enlarged view of the embodiment at G position;

[0153] Figure 47 is Figure 44 exploded view of the embodiment;

[0154] Figure 48 is a schematic view of a battery in the twenty-second embodiment of the present disclosure;

[0155] Figure 49 is Figure 48 cutaway view of the embodiment;

[0156] Figure 50 is Figure 48 exploded view of the embodiment;

[0157] Figure 51 is a schematic view of a battery in the twenty-third embodiment of the present disclosure;

[0158] Figure 52 is Figure 51 cutaway view of the embodiment at H-H position;

[0159] Figure 53 is Figure 51 partial enlarged view of the embodiment at I position;

[0160] Figure 54 Figure 1 is a schematic diagram of a battery in accordance with an embodiment of the present disclosure; Figure 51 Figure 2 is an exploded schematic diagram of the battery of Figure 1 ;

[0161] Figure 55 Figure 3 is a schematic diagram of a battery in accordance with a second embodiment of the present disclosure;

[0162] Figure 56 Figure 4 is an exploded schematic diagram of the battery of Figure 3;

[0163] Figure 57 Figure 5 is a schematic diagram of a battery in accordance with a third embodiment of the present disclosure;

[0164] Figure 58 Figure 6 is an exploded schematic diagram of the battery of Figure 5; Figure 57 Figure 7 is a cutaway schematic diagram of the third embodiment at position J-J;

[0165] Figure 59 Figure 8 is a schematic diagram of an arrangement of a battery and a seat in accordance with a fourth embodiment of the present disclosure from a first perspective;

[0166] Figure 60 Figure 9 is a schematic diagram of the fourth embodiment from a second perspective; Figure 59

[0167] Figure 10 is a schematic diagram of the fourth embodiment from a third perspective; Figure 61 Figure 59 Figure 11 is a schematic diagram of an arrangement of a battery and a seat in accordance with a fifth embodiment of the present disclosure from a first perspective;

[0168] Figure 62 Figure 12 is a schematic diagram of the fifth embodiment from a second perspective;

[0169] Figure 63 Figure 62 Figure 13 is a schematic diagram of the fifth embodiment from a third perspective;

[0170] Figure 64 Figure 14 is a schematic diagram of an arrangement of a battery and a seat in accordance with a sixth embodiment of the present disclosure;

[0171] Figure 65 Figure 15 is a schematic diagram of the sixth embodiment from a fourth perspective;

[0172] Figure 66 Figure 16 is a schematic diagram of the sixth embodiment from a fifth perspective; Figure 65

[0173] Figure 17 is a schematic diagram of the sixth embodiment from a sixth perspective; Figure 67 Figure 65 Figure 18 is a schematic diagram of an arrangement of a battery and a seat in accordance with a seventh embodiment of the present disclosure from a first perspective;

[0174] Figure 68 Figure 19 is a schematic diagram of the seventh embodiment from a second perspective.​​​

[0175] Figure 69 For Figure 68 Arrangement schematic diagram of the embodiment in the eighth perspective view;

[0176] Figure 70 For Figure 68 Arrangement schematic diagram of the embodiment in the ninth perspective view;

[0177] Figure 71 The arrangement relationship between the vehicle body part, the seat and the battery in an embodiment of the present disclosure.

[0178] The figure mark explanation 100, vehicle; 100a, passenger space; 10, battery; 11, containing box; 111a, containing cavity; 111b, containing part; 111c, first containing subpart; 111d, second containing subpart; 111, first box wall; 1111, boss; 1111a, first boss; 1111b, second boss; 1111c, third boss; 1112, box wall body; 1112a, through hole; 1112b, mounting step; 1113, mounting plate; 1114, sealing ring; 12, battery assembly; 12a, protruding part; 121, battery monomer; 1211, shell; 1211a, cover plate; 1211b, shell body; 1212, first shell wall; 1212a, avoidance slot; 1212b, first center surface; 1212c, second center surface; 1213, pole column; 1214, protrusion; 1214a, third center surface; 1214b, fourth center surface; 1215, electrode assembly; 1216, main body; 1217, pole lug; 1218, explosion-proof valve; 1219, adapter sheet; 122, busbar; 123, sampling component; 124, battery management system; 125, relay; 126, high-voltage power distribution unit; 127, high-low voltage wire harness; 13, first adhesive layer; 14, temperature control assembly; 15, second adhesive layer; 16, third adhesive layer; 17, insulating part; 20, seat; 20a, first gap; 20b, second gap; 21, seat cushion; 211, cushion pad; 22, seat back; 23, leg; 30, controller; 40, motor; 50, vehicle body part; 60, chassis. DETAILED DESCRIPTION

[0179] It should be noted that the embodiments in the present disclosure and the technical features in the embodiments can be combined with each other without conflict, and the detailed description in the specific embodiments should be understood as the explanation and illustration of the purpose of the present disclosure, and should not be regarded as improper limitation of the present disclosure.

[0180] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure; the use of the terms "including," "comprising," "having" and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items.

[0181] At present, new energy batteries are increasingly widely used in life and industry. New energy batteries are not only applied to energy storage power supply systems such as hydroelectric, thermal, wind and solar power stations, but also widely used in electric bicycles, electric motorcycles, electric vehicles and other electric vehicles, and aerospace and other fields.

[0182] Figure 1 A structural schematic diagram of a vehicle 100 is provided for an embodiment of the present disclosure. The vehicle 100 can be a fuel automobile, a gas automobile or a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile or a range extended automobile, etc. As shown in the figure, the vehicle 100 is internally provided with a battery 10, which can be arranged at the bottom, head or tail of the vehicle 100. The battery 10 can be used for power supply of the vehicle 100, for example, the battery 10 can be used as an operating power source of the vehicle 100. The vehicle 100 can also include a controller 30 and a motor 40, and the controller 30 is used to control the battery 10 to supply power to the motor 40, for example, to meet the power demand of the vehicle 100 during starting, navigation and driving. Figure 17

[0183] In some embodiments of the present disclosure, the battery 10 can not only be used as an operating power source of the vehicle 100, but also be used as a driving power source of the vehicle 100, instead of or partially instead of fuel or natural gas to provide driving power for the vehicle 100.

[0184] In an embodiment of the present disclosure, the battery can be a battery monomer. The battery monomer refers to a basic unit capable of realizing mutual conversion between chemical energy and electrical energy, and can be used to make a battery module or a battery pack, so as to supply power to an electric device. The battery monomer can be a secondary battery, which refers to a battery monomer that can be activated by charging after discharging. The battery monomer can be a lithium ion battery, a sodium ion battery, a sodium lithium ion battery, a lithium metal battery, a sodium metal battery, a lithium sulfur battery, a magnesium ion battery, a nickel hydrogen battery, a nickel cadmium battery, a lead-acid battery, etc., and the present disclosure is not limited thereto.

[0185] ​A battery cell generally includes an electrode assembly. The electrode assembly includes a cathode, an anode, and a separator. During charging and discharging of the battery cell, active ions (e.g., lithium ions) are intercalated and deintercalated between the cathode and the anode. The separator is disposed between the cathode and the anode, and can function to prevent short circuiting of the cathode and the anode while allowing the active ions to pass through.

[0186] In some embodiments, the battery cell further includes an electrolyte that functions to conduct ions between the cathode and the anode. The type of electrolyte is not particularly limited by the present disclosure, and can be selected as desired. The electrolyte can be liquid, gel, or solid.

[0187] In some embodiments, the battery cell can include a case. The case is used to enclose components such as the electrode assembly and the electrolyte. The case can be a steel case, an aluminum case, a plastic case (e.g., polypropylene), a composite metal case (e.g., a copper-aluminum composite case), or an aluminum-plastic film, among others.

[0188] By way of example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or other shapes, and the present disclosure is not particularly limited. The prismatic battery cell includes a square battery cell, a blade battery cell, a multi-prismatic battery cell (e.g., a hexagonal battery cell), among others.

[0189] In embodiments of the present disclosure, a battery can also be a single physical module (e.g., a battery module or a battery) that includes one or more battery cells to provide higher voltage and capacity. When there are multiple battery cells, the multiple battery cells are connected in series, in parallel, or in a mixed connection via a busbar.

[0190] In the description of embodiments of the present disclosure, the technical terms "first", "second", "third", and the like are used only to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order, or primary and secondary relationship of the technical features indicated. In the description of embodiments of the present disclosure, the meaning of "a plurality of" is two or more, unless otherwise explicitly and specifically limited.

[0191] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the present disclosure. The appearance of the phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to each other. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0192] In the description of the embodiments of the present disclosure, the term "and / or" is merely an association relationship of associated objects, and can represent three relationships, for example, A and / or B, which can represent three cases of A existing alone, A and B existing together, and B existing alone. In addition, the character " / " in this paper generally represents that the front and rear associated objects are "or" relationship.

[0193] In the description of the embodiments of the present disclosure, for the convenience of description, Figure 2 、 Figure 3 、 Figure 6 、 Figure 59 、 Figure 60 、 Figure 61 , as indicated by the arrows, the direction in which the arrow X is located is the "height direction of the battery" and the "height direction of the vehicle", the direction in which x1 is located is the "top", the direction in which x2 is located is the "bottom", the direction in which the arrow Y is located is the "length direction of the battery" and the "length direction of the vehicle", and the direction in which the arrow Z is located is the "width direction of the battery" and the "width direction of the vehicle". As indicated by the arrows in Figure 11 、 Figure 17 、 Figure 18 、 Figure 19 、 Figure 20 , the direction in which the arrow a is located is the "length direction of the battery monomer" and the "length direction of the first shell wall", the direction in which the arrow b is located is the "width direction of the battery monomer" and the "width direction of the first shell wall", and the direction in which the arrow c is located is the "height direction of the battery monomer".

[0194] In the description of the embodiments of the present disclosure, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0195] In the description of the embodiments of the present disclosure, unless otherwise explicitly specified and limited, the technical term "contact" should be understood in a broad sense, which can be direct contact or contact through an intermediate medium layer, and can be contact between two objects in contact without interaction force, or contact between two objects in contact with interaction force.

[0196] Next, the embodiments of the present disclosure will be described in detail.

[0197] The battery includes a containing box, battery monomers, a current collecting piece, a sampling component, a battery management system and different parts, different types of parts are placed in the containing box, the containing box provides installation positions for different types of parts, and protects and seals each part, which is beneficial to the charging and discharging functions of the battery in different working environments.

[0198] The sizes, shapes and quantities of the different types of parts in the containing box are often different, and in order to facilitate manufacturing, the space in the containing box is regular. Therefore, the different types of parts cannot be regularly placed in the containing box, which easily causes waste of the volume of the containing box, is not conducive to compact layout of the internal structure of the battery, and is not conducive to improving the energy density of the battery.

[0199] Embodiments of the present disclosure aim to provide a battery, a containing part is arranged in the containing box, the containing part is in communication with the containing cavity, so that part of the parts in the containing box can be placed in the containing part, so that the shape of the space in the containing box better adapts to the arrangement mode of each type of part in the containing box, thereby facilitating reduction of the three-dimensional size of the containing box and improvement of space utilization.

[0200] Specifically, the embodiments of the present disclosure provide a battery 10, referring to Figures 2 to 9 The battery 10 includes a containing box 11 and a battery assembly 12.

[0201] The containing box 11 is provided with a containing cavity 111a, and the containing box 11 includes a first box wall 111;

[0202] The battery assembly 12 is contained in the containing cavity 111a, and the battery assembly 12 includes a protruding part 12a;

[0203] The first box wall 111 is provided with a containing part 111b, and at least part of the protruding part 12a is contained in the containing part 111b.

[0204] The containing box 11, that is, the box forming the outer contour of the battery 10, is used to contain other parts in the battery 10 except the containing box 11, thereby providing installation and fixing space for the other parts, and at the same time, plays a sealing and protection role, reduces the adverse effects of collision of external objects and entry of foreign matters on the normal work of the battery 10 during transportation and use.

[0205] The box wall refers to the structure between each wall surface of the containing box 11 surrounding the containing cavity 111a and the outer surface of the containing box 11 in the direction away from the containing cavity 111a. That is, among the two opposite surfaces of the box wall, one surface forms the inner wall of the containing cavity 111a, and the other surface forms the outer surface of the containing cavity 111a.

[0206] The first box wall 111, that is, a certain box wall of the containing box 11.

[0207] The battery assembly 12, that is, various components in the battery 10 for realizing the charging and discharging functions of the battery 10.

[0208] The battery assembly 12 is located in the containing box 11, so that the containing box 11 can protect and seal the battery assembly 12, and the battery assembly 12 can normally realize the charging and discharging functions.

[0209] The protruding part 12a refers to a part of the outer contour surface formed by the battery assembly 12, which protrudes from other parts adjacent thereto. It can be one or more components in the battery assembly 12, or a partial structure of a certain component in the battery assembly 12.

[0210] The containing part 111b, that is, a space formed on the surface of the first box wall 111 facing the containing cavity 111a, which is in communication with the space of the containing cavity 111a at least on one side facing the containing cavity 111a, so that part or all of the protruding part 12a can extend into the space of the containing part 111b through the open position of the containing part 111b.

[0211] The specific structure of the containing part 111b is not limited, for example, it can be a containing groove.

[0212] The battery 10 in the embodiments of the present disclosure, by arranging the containing part 111b on the first box wall 111, on the one hand, it is beneficial to make the space shape in the containing box 11 better adapt to the outer contour shape formed by the battery assembly 12, and it is beneficial to reduce the requirements on the arrangement of each component in the battery assembly 12; on the other hand, it is beneficial to reduce the overall size and volume of the containing box 11, improve the space utilization in the containing box 11, reduce the overall volume of the battery 10, and improve the energy density of the battery 10.

[0213] In some embodiments, referring to Figures 2 to 9 , along the thickness direction of the first box wall 111, part of the projection of the battery assembly 12 is located outside the projection of the containing part 111b.

[0214] The thickness direction of the first box wall 111, that is, the direction of the first box wall 111 away from the containing cavity 111a until the outer surface of the containing box 11.

[0215] Part of the projection of the battery assembly 12 is located outside the projection of the containing part 111b, that is, part of the battery assembly 12 is located in the containing cavity 111a, and the other part is located in the containing part 111b.

[0216] Therefore, the battery assembly 12 can make full use of the space in the accommodating cavity 111a, improve the space utilization of the battery 10, and facilitate to improve the capacity of the battery 10.

[0217] It can be understood that the specific number of the first box wall 111 of the accommodating box 11 is not limited, and can be one or multiple.

[0218] The number of the accommodating portion 111b on the first box wall 111 is not limited, and can be one or multiple.

[0219] In some embodiments, referring to Figures 2 to 9 , the battery assembly 12 further includes a plurality of battery monomers 121, and the battery monomer 121 includes a shell 1211 having a first shell wall 1212, and the protruding portion 12a is arranged on the first shell wall 1212.

[0220] The shell 1211 is used to surround and form a space for accommodating related components for realizing electrochemical reaction in the battery monomer 121.

[0221] The shell wall refers to the structure between each wall surface surrounding and forming the space in the shell 1211 and the outer surface of the shell 1211 in the direction away from the space.

[0222] The protruding portion 12a arranged on the first shell wall 1212 refers to that the protruding portion 12a can be a part of the first shell wall 1212 protruding from the outer surface of the other part of the first shell wall 1212, that is, a part of the first shell wall 1212 forms the protruding portion 12a, and the specific type of this part is not limited, for example, part or all of the protrusion 1214 formed on the outer surface of the first shell wall 1212 in the following description; can be that the protruding portion 12a is part or all of other components in the battery assembly 12 except the battery monomer 121, for example, the busbar 122, the sampling member 123 and the like in the following description, and these components are arranged on the first shell wall 1212; or a combination of the above two cases, for example, the protruding portion 12a includes the protrusion 1214 in the foregoing description, the pole column 1213 arranged on the protrusion 1214 in the following description, and the busbar 122 electrically connected with the pole column 1213 and the like.

[0223] Therefore, a part of the first shell wall 1212 can enter the accommodating portion 111b, thereby facilitating to increase the volume of the battery monomer 121, and facilitating to adapt the space in the accommodating box 11 to the battery monomers 121 with different outer contour shapes, facilitating to arrange the battery monomers 121 with different outer contour shapes more compactly in the accommodating box 11, and facilitating to improve the energy density of the battery 10.

[0224] In some embodiments, referring to Figure 7 ,Figure 8 、 Figure 9 、 Figure 10 、 Figure 31 、 Figure 33 、 Figure 46 、 Figure 47 、 Figure 53 and Figure 54 The battery assembly 12 further comprises a busbar 122, and the battery cell 121 further comprises a pole 1213, the pole 1213 is arranged on the first shell wall 1212, the busbar 122 is electrically connected to the poles 1213 of the two battery cells 121, the protruding portion 12a comprises the busbar 122, and at least part of the busbar 122 is accommodated in the accommodation portion 111b.

[0225] The busbar 122 is used for electrically connecting a plurality of battery cells 121, so that the battery cells 121 are connected in series or in parallel.

[0226] The pole 1213 is arranged on the shell 1211 and is used for electrically connecting components that realize electrochemical reactions in the battery cell 121, so as to output or input electric energy to the battery cell 121 through the pole 1213.

[0227] At least part of the busbar 122 is accommodated in the accommodation portion 111b, that is, part or all of the busbar 122 is located in the accommodation portion 111b.

[0228] In this way, the space in the accommodation box 11 is better adapted to the arrangement relationship between the busbar 122 and the battery cell 121, so that the shape of the accommodation cavity 111a can be adapted to the shape of the battery cell 121, and the gap between the inner wall of the accommodation cavity 111a and the battery cell 121 is reduced, and the space utilization of the battery 10 is improved.

[0229] It should be noted that the specific structure of the busbar 122 and the way of realizing series or parallel connection between the battery cells 121 have been applied in the related art, and will not be described here.

[0230] It can be understood that, referring to Figure 9 The pole 1213 can be flush with the outer surface of the shell 1211, so that the outer surface of the first shell wall 1212 is a complete surface; alternatively, referring to Figure 8 The pole 1213 protrudes from the outer surface of the first shell wall 1212.

[0231] It can be understood that the size of the shell 1211 has a direct impact on the components that realize electrochemical reactions in the battery cell 121, and further affects the energy density of the battery cell 121.

[0232] In some embodiments, referring to Figure 7 、 Figure 8 ,Figure 31 、 Figure 33 、 Figure 53 and Figure 54 at least part of the pole 1213 is accommodated in the accommodation portion 111b.

[0233] That is, the protruding portion 12a includes at least part of the pole 1213, and at least part of the pole 1213 and the busbar 122 are located in the accommodation portion 111b. In this way, the busbar 122 connected to the pole 1213 is more reasonably arranged in the accommodation portion 111b, which is conducive to improving the space utilization in the accommodation cavity 111a, and further conducive to improving the capacity of the battery 10.

[0234] In some embodiments, the pole 1213 and the busbar 122 are located in the accommodation portion 111b, and part or all of the shell 1211 is located in the accommodation cavity 111a.

[0235] In some embodiments, referring to Figure 4 、 Figure 5 、 Figure 31 and Figure 32 , the poles 1213 of the at least two battery monomers 121 are located in the same accommodation portion 111b.

[0236] In this way, it is conducive to realizing the electrical connection of the poles 1213 of different battery monomers 121 through the busbar 122 in one accommodation portion 111b, and conducive to making the structure of the battery 10 more compact.

[0237] The busbar 122 has electrical conductivity in order to realize the electrical connection of the pole 1213. During use and transportation of the battery 10, the battery assembly 12 may move relatively to the accommodation box 11, so as to cause the busbar 122 to contact the inner wall of the accommodation portion 111b, and thus the busbar 122 may be damaged.

[0238] In some embodiments, referring to Figure 46 , the distance between the inner wall of the accommodation portion 111b and the busbar along the first direction is not less than 1% of the size of the accommodation portion 111b along the first direction, and the first direction is perpendicular to the thickness direction of the first box wall. That is, L10≥0.01·L11.

[0239] In this way, it is conducive to reducing the probability of contact between the busbar 122 and the inner wall of the accommodation portion 111b, so that the battery assembly 12 can normally function.

[0240] The first direction can be any direction perpendicular to the thickness direction of the first box wall, such as the length direction of the battery 10, the width direction of the battery 10, etc.

[0241] In some embodiments, the ratio of the distance between the inner wall of the accommodating portion and the current-converging member along the first direction to the size of the accommodating portion along the first direction ranges from 2% to 10%. That is, 0.1·L11≥L10≥0.02·L11.

[0242] In this way, the probability of the current-converging member 122 contacting the inner wall of the accommodating portion 111b is further reduced.

[0243] In some embodiments, referring to Figure 9 , the battery 10 comprises an insulating member 17 arranged on the inner wall of the accommodating portion 111b.

[0244] In this way, by virtue of the insulating property of the insulating member 17, the risk of charge transmission between the battery assembly 12 and the accommodating case 11 is reduced, and the risk of short circuit of the battery 10 during use is reduced.

[0245] The specific material of the insulating member 17 is not limited, such as rubber, etc.

[0246] In some embodiments, referring to Figure 9 , the battery assembly 12 comprises a battery cell 121, and the battery cell 121 comprises a pole 1213, and the insulating member 17 is arranged opposite to the pole 1213.

[0247] In this way, the probability of the pole 1213 contacting the accommodating case 11 due to relative movement between the battery assembly 12 and the accommodating portion 111b is reduced, and the risk of short circuit of the battery cell 121 due to contact between the pole 1213 and the accommodating case 11 is reduced.

[0248] In some embodiments, referring to Figure 7 , Figure 8 , Figure 31 , Figure 33 , Figure 46 , Figure 53 and Figure 54 , the first shell wall 1212 comprises a protrusion 1214, and the protruding portion 12a comprises the protrusion 1214, and at least part of the protrusion 1214 is accommodated in the accommodating portion 111b. That is, part or all of the protrusion 1214, i.e., part of the first shell wall 1212, is located in the accommodating portion 111b.

[0249] By arranging the protrusion 1214, the space in the battery cell 121 is increased, the volume of the battery cell 121 for accommodating components for electrochemical reaction is increased, and the energy density of the battery cell 121 is increased.

[0250] In this way, by locating the protrusion 1214 in the accommodating portion 111b, the distance between the other part of the first shell wall 1212 and the inner wall of the accommodating cavity 111a is reduced, the volume of the accommodating cavity 111a is reduced, and the three-dimensional size of the accommodating box 11 is reduced, thereby reducing the overall volume of the battery 10 and improving the energy density and space utilization of the battery 10.

[0251] In some embodiments, the protrusion 1214 forms the protruding portion 12a alone, that is, the protruding portion 12a protrudes from the body of the first shell wall.

[0252] In some embodiments, referring to Figures 11 to 16 , Figure 31 the pole column 1213 is arranged on the protrusion 1214. That is, the pole column 1213 is arranged in the protrusion 1214.

[0253] In this way, the space utilization in the protrusion 1214 is improved, the redundant volume in the shell 1211 is reduced, the space in the battery monomer 121 is more compact, the overall volume and the outer contour size of the battery monomer 121 are reduced, the number of battery monomers 121 that can be accommodated in the battery 10 is increased, and the energy density and space utilization of the battery 10 are improved.

[0254] In some embodiments, referring to Figures 14 to 16 the number of pole columns 1213 is two and the polarities are opposite, and the two pole columns 1213 are arranged on the same protrusion 1214.

[0255] One pole column 1213 serves as the positive electrode of the battery monomer 121, and the other pole column 1213 serves as the negative electrode of the battery monomer 121.

[0256] In this way, only one protrusion 1214 is needed to provide mounting positions for the two pole columns 1213, the manufacturing steps of the first shell wall 1212 are reduced, and the production cost is reduced.

[0257] In some embodiments, referring to Figures 11 to 13 the number of pole columns 1213 is two and the polarities are opposite, and the two pole columns 1213 are arranged on the two protrusions 1214, respectively.

[0258] In this way, on the one hand, the volume of a single protrusion 1214 is reduced, the structure is more compact, and the volume of the battery 10 is reduced; on the other hand, the two pole columns 1213 are spaced apart, the risk of short circuit between the two pole columns 1213 is reduced, and the use safety of the battery monomer 121 is improved.

[0259] It can be understood that the protrusions 1214 protrude from the surface of the first shell wall 1212, and therefore the arrangement direction of the protrusions 1214 affects the arrangement of other components in the battery 10 except the battery monomers 121.

[0260] In some embodiments, referring to Figure 17 , the two polar posts 1213 are arranged along the length direction of the first shell wall 1212.

[0261] The length direction of the first shell wall 1212 refers to the direction in which the largest dimension of the three-dimensional size of the outer contour of the first shell wall 1212 extends, in the case that the outer contour shape of the first shell wall 1212 is a cuboid.

[0262] In this way, the distance between the two protrusions 1214 is increased as much as possible, so that the part of the first shell wall 1212 between the two protrusions 1214 forms a large-area flat area, which facilitates the arrangement of other components with large outer contour dimensions in the battery 10 in the case of a certain internal volume of the battery 10, provides convenience for the arrangement of other components in the battery 10, and at the same time, facilitates the reduction of the volume of the battery 10, improves the space utilization inside the battery 10, and makes the volume of the battery 10 more compact.

[0263] In some embodiments, referring to Figure 18 , the two polar posts 1213 are arranged along the width direction of the first shell wall 1212.

[0264] The width direction of the first shell wall 1212 refers to the direction perpendicular to the length direction, in the case that the outer contour shape of the first shell wall 1212 is a cuboid.

[0265] It can be understood that the dimension of the first shell wall 1212 along the width direction is smaller than the dimension along the length direction, and there are a plurality of battery monomers 121 in the battery 10, and arranging the plurality of battery monomers 121 along the width direction facilitates reducing the maximum dimension of the outer contour formed by the plurality of battery monomers 121.

[0266] In this way, arranging the two polar posts 1213 along the width direction of the first shell wall 1212 facilitates shortening the distance between the polar posts 1213 of different polarities between adjacent two battery monomers 121, thereby facilitating the reduction of the size of the busbar 122, and further facilitating the reduction of the size of the battery 10.

[0267] In some embodiments, referring to Figures 11 to 16The battery monomer 121 further comprises an electrode assembly 1215 accommodated in the shell 1211. A portion of the first shell wall 1212 is recessed to form an avoiding groove 1212a on the side of the protrusion 1214 close to the electrode assembly 1215. A portion of the electrode assembly 1215 is located in the avoiding groove 1212a.

[0268] The shell 1211 provides installation space for the electrode assembly 1215 and plays a protective role. Meanwhile, the shell 1211 is used for electrolyte movement to cause electrochemical reaction between the electrolyte and the electrode assembly 1215.

[0269] The avoiding area is recessed to form the avoiding groove 1212a on the side of the electrode assembly 1215 and is protruded to form the protrusion 1214 on the side away from the electrode assembly 1215. The protrusion 1214 and the avoiding groove 1212a are correspondingly arranged.

[0270] A portion of the electrode assembly 1215 is located in the avoiding groove 1212a. When the size of the first shell wall 1212 is constant, the first shell wall 1212 can be as close to the electrode assembly 1215 as possible, thereby effectively reducing the volume in the shell 1211 and making as many portions of the electrode assembly 1215 as possible extend into the avoiding groove 1212a. This is conducive to reducing the redundant volume in the battery monomer 121, making the space in the battery monomer 121 more compact, thereby being conducive to reducing the overall volume and the outer contour size of the battery monomer 121, and further being conducive to improving the number of battery monomers 121 that can be accommodated in the battery 10 and the energy density and space utilization of the battery 10.

[0271] It can be understood that the battery monomer 121 is provided with at least a portion of the installation cavity for placing the electrode assembly 1215. The installation cavity is in communication with the avoiding groove 1212a.

[0272] In some embodiments, referring to Figures 11 to 16 The electrode assembly 1215 comprises a main body 1216 and a tab 1217. The tab 1217 is arranged on the side edge of the main body 1216 and is electrically connected with the main body 1216. At least a portion of the tab 1217 is located in the avoiding groove 1212a.

[0273] The main body 1216, i.e., the bare battery core, is formed by stacking or winding a plurality of pole pieces. The tab 1217 forms the positive electrode or the negative electrode in the electrode assembly 1215.

[0274] By locating a portion or all of the tab 1217 in the avoiding groove 1212a, the space utilization of the space in the accommodating box 11 is improved.

[0275] It can be understood that the tab 1217 protrudes from one side surface of the main body 1216.

[0276] In some embodiments, referring to Figures 29 to 31 , at least part of the tab 1217 is located in the accommodation portion 111b, so as to improve the space utilization of the space in the accommodation box 11 and make the shape of the part of the battery monomer 121 located outside the accommodation portion 111b more regular.

[0277] In some embodiments provided with the pole 1213, referring to Figure 31 , the electrode assembly 1215 further comprises a transition piece 1219, the tab 1217 and the pole 1213 are electrically connected through the transition piece 1219, and at least part of the transition piece 1219 is located in the accommodation portion 111b.

[0278] The transition piece 1219 is used to electrically connect the pole 1213 and the tab 1217 to adapt to the electrical connection requirement between poles 1213 and tabs 1217 of different sizes.

[0279] In this way, part or all of the transition piece 1219 is located in the accommodation portion 111b, which can improve the space utilization of the space in the accommodation box 11 and make the shape of the part of the battery monomer 121 located outside the accommodation portion 111b more regular.

[0280] In some embodiments, part of the main body 1216 is located in the avoiding groove 1212a.

[0281] In this way, it is convenient to adapt to the shapes of the tab 1217 and the main body 1216 under the condition that the overall volume and shape of the battery monomer 121 are constant, and to improve the space utilization in the avoiding groove 1212a.

[0282] In some embodiments, referring to Figure 12 and Figure 15 , the shell 1211 comprises a cover plate 1211a and a shell body 1211b, the cover plate 1211a is arranged on the opening of the shell body 1211b, and the protrusion 1214 is arranged on the cover plate 1211a,

[0283] The cover plate 1211a is arranged on the opening of the shell body 1211b and is in sealing connection with the shell body 1211b, so as to encapsulate the electrode assembly 1215 and the electrolyte in the installation cavity, avoid the electrolyte from overflowing, or avoid foreign matters from the outside into the installation cavity to pollute the electrolyte, so that the electrochemical reaction of the battery monomer 121 in the charging and discharging process can be carried out normally.

[0284] The specific way of the sealing connection between the cover plate 1211a and the shell body 1211b is not limited, for example, welding.

[0285] Therefore, by arranging the protrusion 1214 on the cover plate 1211a, the part of the electrode assembly 1215 can directly enter or exit the space of the protrusion 1214 during the assembly and disassembly of the cover plate 1211a, thereby improving the assembly and disassembly efficiency of the battery monomer 121.

[0286] It can be understood that the opening direction of the opening of the shell body 1211b is the same as the covering direction of the cover plate 1211a.

[0287] In some embodiments, the protrusion 1214 is arranged on the shell body 1211b.

[0288] Therefore, during the assembly of the battery monomer 121, the part of the electrode assembly 1215 can be first placed in the space of the protrusion 1214, and the electrode assembly 1215 is stopped and matched by the protrusion 1214, thereby reducing the probability that the electrode assembly 1215 cannot function due to movement during the assembly and disassembly of the cover plate 1211a.

[0289] In some embodiments, referring to Figures 11 to 13 , the number of protrusions 1214 on the first shell wall 1212 is two. Therefore, each protrusion 1214 can be electrically connected to the pole column 1213 and the pole sheet of the same polarity, respectively, thereby reducing the probability of short circuit.

[0290] In some embodiments, referring to Figure 17 , the two protrusions 1214 are located at one end of the opposite two ends of the first shell wall 1212.

[0291] Therefore, the part of the first shell wall 1212 between the two protrusions 1214 forms a large-area flat area, thereby facilitating the arrangement of other components with large external contour dimensions in the battery 10 in the case of a certain internal volume of the battery 10, providing convenience for the arrangement of other components in the battery 10, and facilitating the reduction of the volume of the battery 10, the improvement of the space utilization in the battery 10, and the more compact volume of the battery 10.

[0292] In some embodiments, referring to Figure 18 and Figure 19 , the distance between the protrusion 1214 and one end of the length direction of the first shell wall 1212 is greater than the distance between the protrusion 1214 and the other end of the length direction of the first shell wall 1212.

[0293] That is, the first shell wall 1212 is divided into two regions by the protrusion 1214 along the length direction, and the area of one region is greater than that of the other region. In this way, in the case of a certain internal volume of the battery 10, other components with a larger outer contour size in the battery 10 are arranged in the region with a larger area, which facilitates the arrangement of other components in the battery 10, and at the same time, helps to reduce the volume of the battery 10, improve the space utilization inside the battery 10, and make the volume of the battery 10 more compact.

[0294] In some embodiments, referring to Figure 19 , the protrusion 1214 is located at one end of the first shell wall 1212 along the length direction of the first shell wall 1212.

[0295] In this way, the area of the region of the first shell wall 1212 at the other end away from the protrusion 1214 along the length direction can be maximized, thereby facilitating the arrangement of other components with a larger outer contour size in the battery 10 in this region, which facilitates the arrangement of other components in the battery 10, and at the same time, helps to reduce the volume of the battery 10, improve the space utilization inside the battery 10, and make the volume of the battery 10 more compact.

[0296] In some embodiments, referring to Figure 14 and Figure 20 , the protrusion 1214 is located at the center of the first shell wall 1212 along the length direction of the first shell wall 1212.

[0297] That is, the first central surface 1212b of the first shell wall 1212 along the length direction coincides with the third central surface 1214a of the protrusion 1214 along the length direction of the battery monomer 121.

[0298] The first central surface 1212b refers to a reference plane perpendicular to the length direction of the first shell wall 1212 and located at the position of one-half size of the first shell wall 1212 along the length direction.

[0299] The third central surface 1214a refers to a reference plane perpendicular to the length direction of the protrusion 1214 and located at the position of one-half size of the protrusion 1214 along the length direction.

[0300] In this way, it is beneficial to make the structure of the battery monomer 121 symmetric about the first central surface 1212b, facilitate the adjustment of the placement direction when arranging multiple battery monomers 121 in the battery 10, and improve the adaptability of the battery monomer 121.

[0301] It should be noted that due to the influence of various factors in the production process such as manufacturing, assembly, measurement, etc., the first center surface 1212b of the first shell wall 1212 along the length direction thereof and the third center surface 1214a of the protrusion 1214 along the length direction of the battery monomer 121 cannot coincide with the design size after the battery monomer 121 is completed. Therefore, the actual measurement of whether the first center surface 1212b and the third center surface 1214a coincide is the coincidence considering a certain preset range error, that is, the interval between the first center surface 1212b and the third center surface 1214a along the length direction of the first shell wall 1212 is within the preset range, and the two are considered to coincide. The specific value of the preset range is determined according to the design requirements.

[0302] In some embodiments, referring to Figure 20 , the interval between the center position of the first shell wall 1212 along the length direction thereof and the center position of the protrusion 1214 along the length direction of the first shell wall 1212 is a first interval, and the ratio of the first interval to the length size of the first shell wall 1212 is greater than 0 and does not exceed 47.5%.

[0303] The length size of the first shell wall 1212, that is, Figure 20 the size value of L1 in the formula; the first interval, that is, Figure 20 the size value of L3 in the formula. That is, 0

[0304] In this way, it is beneficial to form a larger area flat region of the first shell wall 1212 along the length direction of the first shell wall 1212, which facilitates the arrangement of other parts with larger outer contour size in the battery 10 in the region, and provides convenience for the arrangement of other parts in the battery 10.

[0305] The specific value of the ratio of the first interval to the length size of the first shell wall 1212 is not limited, for example, 0.5%, 6%, 10%, 15%, 20%, 25%, 30%, 47.5%, etc.

[0306] The specific way of measuring the length size of the first shell wall 1212 is not limited, for example, the size between the end faces of the two ends of the battery monomer 121 along the length direction is measured by a vernier caliper or a ruler.

[0307] The specific way of measuring the length size of the protrusion 1214 is not limited, for example, the size between the end faces of the two ends of the protrusion 1214 along the length direction is measured by a vernier caliper or a ruler.

[0308] The specific manner of measuring the first distance is not limited, for example, the size between the two ends of the first shell wall 1212 along the length direction and the size between the two ends of the convex 1214 along the length direction are measured by a vernier caliper or a ruler respectively, the positions of the first center surface 1212b and the second center surface 1212c are calculated, and marks are made on the first center surface 1212b and the second center surface 1212c respectively, the first shell wall 1212 is placed on the projector, the projection images of the two marks are aligned with the ruler of the projector, and thus the size of the first distance is obtained.

[0309] In some embodiments, the ratio of the first distance to the length of the first shell wall 1212 ranges from 40% to 47.5%. In this way, it is further beneficial to form a larger area of the flat region on one side or both sides of the convex 1214 along the length direction of the first shell wall 1212, so as to facilitate the arrangement of other components with larger outer contour size in the battery 10 in the region.

[0310] The specific value of the ratio of the first distance to the length of the first shell wall 1212 is not limited, for example, 40%, 42.5%, 45%, 47.5%, etc.

[0311] In some embodiments, the center position of the first shell wall 1212 along the width direction coincides with the center position of the convex 1214 along the width direction of the first shell wall 1212. That is, the second center surface 1212c of the first shell wall 1212 along the width direction coincides with the fourth center surface 1214b of the convex 1214 along the width direction of the first shell wall 1212.

[0312] Referring to Figure 20 , the second center surface 1212c refers to a reference plane perpendicular to the width direction of the first shell wall 1212 and located at the position of half the size of the first shell wall 1212 along the width direction. The fourth center surface 1214b refers to a reference plane perpendicular to the width direction of the first shell wall 1212 and located at the position of half the size of the convex 1214 along the width direction.

[0313] In this way, it is further beneficial to form a larger area of the flat region in the width direction of the first shell wall 1212, so as to facilitate the arrangement of other components with larger outer contour size in the battery 10 in the region.

[0314] It should be noted that due to the influence of various factors in the production process such as manufacturing, assembly, measurement, etc., the second center surface 1212c and the fourth center surface 1214b cannot coincide with the design size after the battery monomer 121 is completed. Therefore, the actual measurement of whether the second center surface 1212c and the fourth center surface 1214b coincide is the coincidence under considering a certain preset range error, that is, the distance between the second center surface 1212c and the fourth center surface 1214b along the width direction of the first shell wall 1212 is within the preset range, and the two are considered to coincide. The specific value of the preset range is determined according to the design requirements.

[0315] In some embodiments, referring to Figure 20 , the distance between the center position of the first shell wall 1212 along the width direction and the center position of the protrusion 1214 along the width direction of the first shell wall 1212 is the second distance, and the ratio of the second distance to the width size of the first shell wall 1212 is greater than 0 and does not exceed 25%.

[0316] The width size of the first shell wall 1212, that is, Figure 20 the size value of L2 in the formula; the second distance, that is, Figure 20 the size value of L4 in the formula. That is, 0

[0317] In this way, it is beneficial to leave a certain redundancy for the size of the protrusion 1214 along the width direction, so as to facilitate the sealing between the first shell wall 1212 and other parts.

[0318] The specific value of the ratio of the second distance to the width size of the first shell wall 1212 is not limited, for example, 1%, 5%, 10%, 15%, 20%, 25%, etc.

[0319] The specific way of measuring the width size of the battery monomer 121 is not limited, for example, the size between the end faces of the two ends of the first shell wall 1212 along the width direction is measured by a vernier caliper or a ruler.

[0320] The specific way of measuring the width size of the protrusion 1214 is not limited, for example, the size between the end faces of the two ends of the protrusion 1214 along the width direction is measured by a vernier caliper or a ruler.

[0321] The specific way of measuring the second distance is not limited, for example, the size between the two ends of the first shell wall 1212 along the width direction and the size between the two ends of the protrusion 1214 along the width direction are measured by a vernier caliper or a ruler, respectively, the positions of the third center surface 1214a and the fourth center surface 1214b are calculated, and marks are made on the third center surface 1214a and the fourth center surface 1214b, respectively. The battery monomer 121 is placed on the projector, the projection images of the two marks are aligned with the ruler of the projector, and thus the size of the second distance is obtained.

[0322] In some embodiments, the length of the battery cell 121 is not less than 350 mm, which is beneficial for the electrode assembly 1215 and the electrolyte in the battery cell 121 to store or release sufficient electrical energy, and beneficial for the total electrical energy in the battery 10 to meet the demand.

[0323] The length of the battery cell 121 is not limited in particular, for example, 400 mm, 500 mm, 600 mm, 700 mm, 800 mm, 900 mm, 1000 mm, 1200 mm, 1500 mm, etc.

[0324] In some embodiments, the width of the battery cell 121 ranges from 5 mm to 50 mm, which is beneficial for the size of the battery cell 121 to be convenient to carry and better adapt to the size of the accommodating box 11 of different sizes.

[0325] The specific value of the size of the battery cell 121 in the width direction is not limited, for example, 5 mm, 20 mm, 30 mm, 35 mm, 40 mm, 50 mm, etc.

[0326] In some embodiments, the height of the battery cell 121 ranges from 80 mm to 200 mm. In this way, it is convenient to make the size of the battery cell 121 convenient to carry and better adapt to the size of the accommodating box 11 of different sizes.

[0327] The specific value of the size of the battery cell 121 in the height direction is not limited, for example, 80 mm, 100 mm, 120 mm, 150 mm, 180 mm, 200 mm, etc.

[0328] In some embodiments, the length direction of the protrusion 1214 is the same as the length direction of the first shell wall 1212, and the ratio of the length of the protrusion 1214 to the length of the first shell wall 1212 ranges from 2.5% to 97.5%. That is, referring to Figure 20 , 2.5%≤L5 / L1<97.5%.

[0329] In this way, it is beneficial to make the space in the protrusion 1214 meet the requirement of accommodating part of the electrode assembly 1215.

[0330] In some embodiments, the width direction of the protrusion 1214 is the same as the width direction of the first shell wall 1212, and the ratio of the width of the protrusion 1214 to the width of the first shell wall 1212 ranges from 25% to 100%. That is, referring to Figure 20 , 25%≤L6 / L2<100%.

[0331] In this way, it is beneficial to make the space in the protrusion 1214 meet the requirement of accommodating part of the electrode assembly 1215.

[0332] In some embodiments, the height dimension of the protrusion 1214 is not more than 45 mm, that is, referring to Figure 21 , L7≤45 mm. In this way, it is beneficial to make the space in the protrusion 1214 meet the requirement of accommodating part of the electrode assembly 1215.

[0333] In some embodiments, the length direction of the protrusion 1214 is the same as the length direction of the first shell wall 1212, and the ratio of the length dimension of the protrusion 1214 to the length dimension of the first shell wall 1212 ranges from 5% to 40%, that is, referring to Figure 20 , 5%≤L5 / L1≤40%.

[0334] In this way, it is more beneficial to make the space in the protrusion 1214 meet the requirement of accommodating part of the electrode assembly 1215.

[0335] The specific value of the ratio of the dimension of the protrusion 1214 along the length direction of the first shell wall 1212 to the length dimension of the first shell wall 1212 is not limited, for example, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, etc.

[0336] In some embodiments, the width direction of the protrusion 1214 is the same as the width direction of the first shell wall 1212, and the ratio of the width dimension of the protrusion 1214 to the width dimension of the first shell wall 1212 ranges from 60% to 90%, that is, referring to Figure 20 , 60%≤L6 / L2≤90%.

[0337] In this way, it is more beneficial to make the space in the protrusion 1214 meet the requirement of accommodating part of the electrode assembly 1215.

[0338] The specific value of the ratio of the dimension of the protrusion 1214 along the width direction of the first shell wall 1212 to the width dimension of the first shell wall 1212 is not limited, for example, 60%, 70%, 80%, 90%, etc.

[0339] In some embodiments, the height dimension of the protrusion 1214 ranges from 2 mm to 10 mm. That is, referring to Figure 21 , 2 mm≤L7≤10 mm.

[0340] The height of the protrusion 1214 refers to the dimension of the protrusion 1214 along the height direction of the battery monomer 121.

[0341] In this way, it is further beneficial to make the space in the protrusion 1214 meet the requirement of accommodating part of the electrode assembly 1215.

[0342] The height dimension of the protrusion 1214 is not limited to specific values, such as 2 mm, 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, etc.

[0343] In some embodiments, the battery cell 121 comprises an explosion-proof valve 1218, which is configured to be triggered to open by the pressure in the battery cell 121 when thermal runaway occurs inside the battery cell 121, so that the gas and / or liquid in the battery cell 121 is discharged from the battery cell 121 under the action of the pressure, so as to reduce the probability of explosion of the battery cell 121.

[0344] In some embodiments, referring to Figure 22 , the explosion-proof valve 1218 is located on the protrusion 1214. In this way, it is beneficial to improve the space utilization of the space in the protrusion 1214, so that the space in the battery cell 121 is more compact, thereby facilitating the reduction of the overall volume and the outer contour size of the battery cell 121.

[0345] In some embodiments, referring to Figure 23 , the explosion-proof valve 1218 and the protrusion 1214 are located on the first shell wall 1212, and the explosion-proof valve 1218 is spaced apart from the protrusion 1214. In this way, it is beneficial to reduce the volume of the protrusion 1214; it is advantageous to utilize the advantage of the first shell wall 1212 having a larger arrangement area, on the one hand, it is beneficial to arrange the explosion-proof valve 1218 with a larger opening flow, thereby further reducing the probability of explosion of the battery cell 121; on the other hand, it is beneficial to make the ejection direction of the high-temperature gas flow after the explosion-proof valve 1218 opens adapt to the arrangement manner of the battery cells 121 in the battery 10, thereby improving the safety of the battery 10 in use.

[0346] In some embodiments, referring to Figure 24 , the explosion-proof valve 1218 is located on the wall surface of the battery cell 121 facing away from the first shell wall 1212, that is, the ejection direction of the high-temperature gas flow from the explosion-proof valve 1218 is away from the protrusion 1214. In this way, it is beneficial to make the high-temperature gas flow away from other components in the battery 10 that are electrically connected to the protrusion 1214 after being ejected, thereby reducing the influence of the high-temperature gas flow on other battery cells 121 and other components, reducing the probability of chain reaction of thermal runaway in the battery 10, and improving the safety of the battery 10 in use.

[0347] In some embodiments, referring to Figure 25The explosion-proof valve 1218 is located in the wall surface of the outer surface of the battery cell 121 adjacent to the first shell wall 1212. In this way, the jet direction of the high-temperature gas flow sprayed from the explosion-proof valve 1218 is away from other components in the battery 10 electrically connected with the protrusion 1214, thereby reducing the influence of the high-temperature gas flow on other battery cells 121 and other components, reducing the probability of chain reaction of thermal runaway in the battery 10, and improving the use safety of the battery 10.

[0348] The specific arrangement relationship between the protrusion 1214 of the battery cell 121 and the accommodating portion 111b is not limited.

[0349] In some embodiments, referring to Figures 2 to 5 , Figure 37 and Figure 38 , one battery cell 121 includes a plurality of protrusions 1214, and the plurality of protrusions 1214 are located in the same accommodating portion 111b.

[0350] In this way, it is beneficial to reduce the number of bosses 1111, thereby reducing the manufacturing steps of the protrusions 1214, reducing the production cost, and reducing the difficulty of assembling the protrusions 1214 and the accommodating portion 111b in the assembly process of the battery 10, thereby improving the efficiency of the manufacturing operation.

[0351] In some embodiments, referring to Figures 26 to 28 , the protrusions 1214 of a plurality of battery cells 121 are located in the same accommodating portion 111b.

[0352] In this way, it is beneficial to further reduce the number of bosses 1111, thereby reducing the production cost, reducing the difficulty of assembling the bosses 1111 and the accommodating portion 111b in the assembly process of the battery 10, and improving the efficiency of the manufacturing operation; at the same time, it is beneficial to arrange the sampling member 123, the current collecting member 122 and other components in the same accommodating portion 111b to electrically connect each battery cell 121 and obtain various information of each battery cell 121.

[0353] In some embodiments, referring to Figures 28 to 30 , Figures 33 to 36 , Figure 39 and Figure 40 , the battery 10 includes a plurality of battery cells 121, the plurality of battery cells 121 are divided into a plurality of groups, each group includes at least two battery cells 121, and the protrusions 1214 of the battery cells 121 in each group are located in the same accommodating portion 111b.

[0354] In this way, the same accommodating portion 111b is used to electrically connect each battery cell 121 in the same group.

[0355] It can be understood that each battery cell 121 in each group can be arranged with a spacing; or can be attached to each other to improve the space utilization.

[0356] In some embodiments, referring to Figures 41 to 54 , one battery cell 121 includes a plurality of protrusions 1214, the first case wall 111 includes a plurality of accommodating portions 111b, and each of the protrusions 1214 in the single battery cell 121 is located in a different accommodating portion 111b.

[0357] That is, the different protrusions 1214 on the single battery cell 121 are separated from each other by the different accommodating portions 111b.

[0358] In this way, the probability of short circuit caused by electrical connection between the same components provided on the protrusions 1214 due to miscontacting or the like is reduced, and the use safety of the battery 10 is improved.

[0359] In some embodiments, referring to Figures 48 to 54 , the plurality of battery cells 121 are arranged along a first direction, one battery cell 121 includes a plurality of protrusions 1214, and at least part of the protrusions 1214 are located at one end of the battery cell 121 along the first direction, and in two adjacent battery cells 121 along the first direction, the protrusions 1214 located at the end of the two battery cells 121 along the first direction are located in the same accommodating portion 111b.

[0360] The specific direction of the first direction is not limited, and can be the length direction of the battery 10, the width direction of the battery 10, or the like.

[0361] In this way, it is beneficial to reduce the distance between the protrusions 1214 of the adjacent battery cells 121, reduce the difficulty of electrical connection between the same components provided on the protrusions 1214, and facilitate electrical connection between the adjacent battery cells 121.

[0362] In some embodiments, referring to Figure 7 , Figure 8 , Figure 9 , Figure 31 , Figure 33 , Figure 46 , Figure 47 , Figure 53 and Figure 54 , the battery assembly 12 further includes a sampling member 123, and at least part of the sampling member 123 is accommodated in the accommodating portion 111b. That is, the part of the protruding portion 12a located in the accommodating portion 111b includes part of the sampling member 123.

[0363] The sampling member 123 is configured to acquire voltage, temperature and other parameter information of each component in the battery 10, such as the battery cell 121, and transmit the acquired parameter information to the battery management system 124 (BMS) so as to enable the battery management system 124 to reasonably implement different control strategies to enable the battery 10 to be safely and efficiently charged and discharged.

[0364] The protruding portion 12a includes at least part of the sampling member 123, that is, part or all of the sampling member 123 is located in the accommodating portion 111b.

[0365] In this way, the shape of the accommodating cavity 111a is more suitable for the shape of the shell 1211 of the battery cell 121, and the volume of the shell 1211 can be increased under the condition that the volume of the accommodating cavity 111a is constant, thereby increasing the energy density of the battery 10.

[0366] It should be noted that the specific structure of the sampling member 123 and the principle of sampling different parameter information are already applied in the related art, and will not be described here.

[0367] In some embodiments, referring to Figures 56 to 58 The battery assembly 12 further includes a battery management system 124, at least part of the battery management system 124 being accommodated in the accommodating portion 111b. That is, the part of the protruding portion 12a located in the accommodating portion 111b includes part of the battery management system 124.

[0368] The battery management system 124 is configured to manage and control each electrical device in each battery 10, monitor the operating state of the battery 10, and prevent overcharging and overdischarging of the battery 10 according to the operating state of the battery 10 to prolong the service life of the battery 10.

[0369] In this way, the shape of the accommodating portion 111b can better adapt to the outer contour shape of the battery management system 124, reducing the arrangement requirements for the battery management system 124; and the overall size and volume of the accommodating box 11 can be reduced, and the space utilization in the accommodating box 11 can be improved.

[0370] In some embodiments, referring to Figures 56 to 58 The battery assembly 12 further includes a relay 125, at least part of the relay 125 being accommodated in the accommodating portion 111b. That is, the part of the protruding portion 12a located in the accommodating portion 111b includes part of the relay 125.

[0371] The relay 125 opens or closes the connection between the battery 10 and other electrical devices in the electrical system in response to the instructions from the electrical system to realize the transmission or interruption of electric energy when the battery 10 needs to be charged or discharged.

[0372] In this way, the shape of the accommodating portion 111b can better adapt to the outer contour shape of the relay 125, reducing the arrangement requirements for the relay 125; and the overall size and volume of the accommodating box 11 can be reduced, and the space utilization in the accommodating box 11 can be improved.

[0373] In some embodiments, referring to Figures 56 to 58 , the battery assembly further includes a high-voltage distribution unit 126, at least part of the high-voltage distribution unit 126 is accommodated in the accommodating portion 111b. That is, the part of the protruding portion 12a located in the accommodating portion 111b includes part of the high-voltage distribution unit 126.

[0374] The high-voltage distribution unit 126 is used to monitor the high-voltage connection state and insulation state of the battery 10 in real time to manage the safety of high-voltage power consumption in the battery 10.

[0375] In this way, the shape of the accommodating portion 111b can better adapt to the outer contour shape of the high-voltage distribution unit 126, reducing the arrangement requirements for the high-voltage distribution unit 126; and the overall size and volume of the accommodating box 11 can be reduced, and the space utilization in the accommodating box 11 can be improved.

[0376] In some embodiments, referring to Figure 56 , the battery assembly further includes a high-low voltage wire harness 127, at least part of the high-low voltage wire harness 127 is accommodated in the accommodating portion 111b. That is, the part of the protruding portion 12a located in the accommodating portion 111b includes part of the high-low voltage wire harness 127.

[0377] The high-low voltage wire harness 127 is used to electrically connect various components in the battery assembly 12 to transmit high and low voltage currents and realize the transmission of electric energy and control signals.

[0378] In this way, the shape of the accommodating portion 111b can better adapt to the wiring arrangement of the high-low voltage wire harness 127, reducing the risk of damage to the high-low voltage wire harness 127 due to bending and extrusion; and the overall size and volume of the accommodating box 11 can be reduced, and the space utilization in the accommodating box 11 can be improved.

[0379] In some embodiments, referring to Figure 8 , Figure 9 and Figure 58The accommodation portion 111b includes a first accommodation sub-portion 111c and a second accommodation sub-portion 111d. A part of the protruding portion 12a is accommodated in the space of the first accommodation sub-portion 111c, and another part of the protruding portion 12a is accommodated in the space of the second accommodation sub-portion 111d.

[0380] That is, different parts of the protruding portion 12a are respectively located in different accommodation portions 111b.

[0381] In this way, the shapes of the first accommodation sub-portion 111c and the second accommodation sub-portion 111d can be adapted to the actual outer contour shape of the protruding portion 12a, respectively. In this way, it is beneficial to reduce the outer contour size and the overall volume of the accommodation portion 111b, so as to make the structure of the battery 10 more compact, reduce the overall volume of the battery 10, and improve the energy density of the battery 10.

[0382] It can be understood that the first accommodation sub-portion 111c and the second accommodation sub-portion 111d can be in communication with each other or isolated from each other, which is selected according to the arrangement requirements of various components in the battery assembly.

[0383] In some embodiments, referring to Figures 2 to 4 , Figures 26 to 53 The outer surface of the first box wall 111 is provided with a protrusion 1214, which forms a boss 1111 located on the side of the accommodation portion 111b away from the accommodation cavity 111a. That is, the boss 1111 is correspondingly arranged between the accommodation portion 111b.

[0384] In this way, it is beneficial to make the region of the first box wall 111 provided with the protrusion 1214 consistent with the thickness of other regions, which is beneficial to the overall size of the first box wall 111, and further beneficial to reduce the three-dimensional size of the accommodation box 11 and the overall volume of the battery 10, and facilitate improving the energy density and space utilization of the battery 10.

[0385] The specific way in which the first box wall 111 forms the accommodation portion 111b and the boss 1111 is not limited. For example, the first box wall 111 is made of metal material, and the accommodation portion 111b and the boss 1111 are formed by one-time stamping process.

[0386] In some embodiments, referring to Figures 26 to 33 The length direction of the boss 1111 is the same as the length direction of the accommodation cavity 111a, and the size of the length direction of the boss 1111 is the same as the size of the length direction of the accommodation cavity 111a. The length direction of the accommodation cavity 111a is the length direction of the battery 10.

[0387] In this way, it is beneficial to increase the size of the accommodation portion 111b along the length direction of the battery 10 as much as possible, so as to facilitate the size and volume of the accommodation portion 111b to adapt to different sizes and shapes of the protruding portion 12a.

[0388] In some embodiments, referring to Figures 34 to 36 , the length direction of the boss 1111 is the same as the width direction of the accommodating cavity 111a, and the length dimension of the boss 1111 is the same as the width dimension of the accommodating cavity 111a. The width direction of the accommodating cavity 111a is the width direction of the battery 10.

[0389] In this way, it is beneficial to increase the size of the accommodating portion 111b along the width direction of the battery 10 as much as possible, so as to adapt the size and volume of the accommodating portion 111b to the different sizes and shapes of the protruding part 12a.

[0390] In some embodiments, referring to Figure 29 , the width dimension of the boss 1111 is not more than 500 mm, i.e., L8≤500 mm.

[0391] In this way, on the one hand, it is beneficial to make the surface of the first box wall 111 have a larger flat area to adapt to other components in the electrical device, reducing the adverse effects of the boss 1111 on the arrangement of other components in the electrical device; on the other hand, it reduces the adverse effects of the boss 1111 due to the large width dimension, reducing the probability of damage to components in the accommodating portion 111b due to deformation of the boss 1111.

[0392] In some embodiments, referring to Figure 29 , the width dimension of the boss 1111 ranges from 50 mm to 300 mm, i.e., 50 mm≤L8≤300 mm. In this way, the space in the accommodating portion 111b meets the arrangement requirements of the protruding part 12a.

[0393] The specific value of the width dimension of the boss 1111 is not limited, and for example, the width dimension of the boss 1111 can be 50 mm, 80 mm, 100 mm, 200 mm, 300 mm, etc.

[0394] In some embodiments, referring to Figure 31 , the height dimension of the boss 1111 is not more than 300 mm, i.e., L9≤300 mm.

[0395] In this way, it is adapted to other components in the electrical device, reducing the adverse effects of the boss 1111 on the arrangement of other components in the electrical device; at the same time, it reduces the probability of damage to the protruding part 12a in the accommodating portion 111b due to deformation and bending of the boss 1111 caused by shear stress perpendicular to the height direction.

[0396] In some embodiments, referring to Figure 31 , the height dimension of the boss 1111 ranges from 5 mm to 100 mm, i.e., 5 mm≤L9≤100 mm.

[0397] In this way, the space in the accommodating portion 111b satisfies the arrangement requirement of the protruding portion 12a.

[0398] The height dimension of the boss 1111 is not limited, and is exemplarily 5 mm, 10 mm, 20 mm, 30 mm, 40 mm, 50 mm, 60 mm, 70 mm, 80 mm, 90 mm, 100 mm, etc.

[0399] In the embodiment in which the protrusion 1214 is provided and at least part of the protrusion 1214 is located in the accommodating portion 111b, referring to Figure 21 and Figure 31 , the height dimension of the protrusion 1214 is not more than 77% of the height dimension of the boss 1111. That is, L7 / L9≤77%.

[0400] In this way, on the one hand, the protrusion 1214 is spaced apart from the accommodating portion 111b along the height direction of the battery 10, so as to reduce the probability of damage caused by direct abutment, and the space in the accommodating portion 111b is convenient for arranging other components of the battery assembly 12; on the other hand, the thickness of the boss 1111 can better protect the protrusion 1214.

[0401] In some embodiments, the height dimension of the protrusion 1214 accounts for 36% to 53% of the height dimension of the boss 1111. That is, 36%≤L7 / L9≤53%.

[0402] In this way, the size of the space in the accommodating portion 111b further satisfies the requirement of arranging other components of the battery assembly 12; and the boss 1111 has sufficient strength to protect the protrusion 1214.

[0403] In some embodiments, referring to Figure 31 , the height dimension of the protruding portion 12a is not more than 94% of the height dimension of the boss 1111. That is, L7 / L9≤94%.

[0404] In this way, the probability of abutment between the protruding portion 12a and the boss 1111 along the vertical direction is reduced, and the probability of damage caused by abutment is reduced.

[0405] In some embodiments, referring to Figure 31 , the height dimension of the protruding portion 12a accounts for 74% to 86% of the height dimension of the boss 1111.

[0406] In this way, the probability of abutment between the protruding portion 12a and the boss 1111 along the vertical direction is further reduced, and the space utilization of the protruding portion 12a in the accommodating portion 111b is improved.

[0407] In some embodiments, part or all of the boss 1111 is detachable. That is, part or all of the boss 1111 can be detached from other parts of the box.

[0408] It can be understood that, after being detached, a passage can be formed between the boss 1111 or the first box wall 111 and the outside of the accommodating cavity 111a.

[0409] In this way, by detaching part or all of the boss 1111, the battery assembly 12 in the battery 10 can be checked and repaired through the passage formed, without the need to completely disassemble the box, thereby simplifying the operation steps.

[0410] The specific manner of realizing that part or all of the boss 1111 is detachable is not limited.

[0411] In some embodiments, referring to Figures 8 to 10 , the first box wall 111 includes a box wall body 1112 and a mounting plate 1113, the box wall body 1112 is provided with a through hole 1112a, the through hole 1112a communicates with the accommodating cavity 111a, the edge of the through hole 1112a is provided with a mounting step 1112b extending away from the accommodating cavity 111a, the mounting plate 1113 is detachably covered on the mounting step 1112b to cover the through hole 1112a, the mounting step 1112b and the mounting plate 1113 jointly form the boss 1111, and the inner wall of the through hole 1112a and the surface of the mounting plate 1113 facing the accommodating cavity 111a jointly form an accommodating portion 111b.

[0412] That is, the mounting plate 1113 forms a detachable part of the boss 1111. In this way, after the boss 1111 is detached, the battery assembly 12 in the through hole 1112a and the accommodating cavity 111a can be checked and repaired through the open part of the through hole 1112a.

[0413] The mounting plate 1113 is in the form of a plate, which is easy to install in cooperation with the mounting step 1112b.

[0414] The specific manner of realizing detachable connection between the mounting plate 1113 and the mounting step 1112b is not limited. For example, the mounting plate 1113 and the mounting step 1112b are connected through screwing and screw thread cooperation.

[0415] In some embodiments, referring to Figures 31 to 33The first box wall 111 comprises a sealing ring 1114 clamped between the mounting step 1112b and the mounting plate 1113, and the sealing ring 1114 can be elastically deformed to seal with the mounting step 1112b and the mounting plate 1113 respectively, so as to reduce the probability of foreign matters entering the battery 10 from the joint between the mounting step 1112b and the mounting plate 1113.

[0416] In some embodiments, referring to Figure 32 The first box wall 111 comprises a box wall body 1112 and a mounting plate 1113, the box wall body 1112 is provided with a through hole 1112a communicating with the accommodating cavity 111a, and the mounting plate 1113 is detachably arranged on the box wall body 1112 to cover the through hole 1112a, and the inner wall of the through hole 1112a and the surface of the mounting plate 1113 facing the accommodating cavity 111a form a receiving portion 111b.

[0417] That is, the boss 1111 is formed only by the mounting plate 1113.

[0418] In this way, the structure of the boss 1111 and the box wall body 1112 is simplified, and the production cost is reduced.

[0419] In some embodiments, referring to Figure 32 The first box wall 111 comprises a sealing ring 1114 clamped between the box wall body 1112 and the mounting plate 1113, and the sealing ring 1114 can be elastically deformed to seal with the box wall body 1112 and the mounting plate 1113 respectively, so as to reduce the probability of foreign matters entering the battery 10 from the joint between the box wall body 1112 and the mounting plate 1113 in use.

[0420] It can be understood that the battery assembly 12 needs to be fixed in the battery 10.

[0421] In some embodiments, referring to Figure 55 The battery 10 comprises a first adhesive layer 13 adhered between the inner wall of the accommodating cavity 111a and the battery assembly 12.

[0422] In this way, the inner wall of the accommodating cavity 111a and the battery assembly 12 are adhered by the adhesion of the first adhesive layer 13, so that the relative position between the battery assembly 12 and the box body can be kept fixed; meanwhile, the first adhesive layer 13 is formed by coating adhesive, which is beneficial to improve the work efficiency.

[0423] In some embodiments provided with the first adhesive layer, referring to Figure 55The accommodating part 111b is located on the top side of the accommodating box 11 along the height direction, the battery monomer 121 is a first shell wall 1212 on the top wall along the height direction of the accommodating cavity 111a, and the first adhesive layer 13 is adhered between the inner wall on the top side of the accommodating cavity 111a along the height direction of the accommodating cavity 111a and the first shell wall 1212.

[0424] The height direction of the accommodating box 11, that is, the height direction of the battery 10, is also the gravity direction.

[0425] In this way, the first adhesive layer 13 can play a separating and sealing effect to block the objects in the accommodating part 111b and the accommodating cavity 111a from entering each other; meanwhile, the first shell wall 1212 can be used to coat as much adhesive as possible to form the first adhesive layer 13 to improve the adhesion and fixation effect.

[0426] In some embodiments provided with the first adhesive layer, referring to Figure 55 The first adhesive layer 13 is adhered between the inner wall on the bottom side of the accommodating cavity 111a along the height direction of the accommodating cavity 111a and the bottom wall of the battery monomer 121 along the height direction of the accommodating cavity 111a.

[0427] In this way, the un-solidified adhesive can be prevented from contacting the pole 1213, the sampling member 123 and the busbar 122 during the coating process, thereby reducing the adverse effects of the adhesive on the normal operation of the components in the battery 10; meanwhile, the adhesive can be diffused more uniformly under the gravity of the battery monomer 121.

[0428] In some embodiments, referring to Figure 8 , Figure 9 , Figure 31 , Figure 32 , Figure 47 , Figure 54 The battery 10 comprises a temperature control assembly 14, and the temperature control assembly 14 is clamped between the inner wall of the accommodating cavity 111a and the battery assembly 12.

[0429] The temperature control assembly 14 is internally provided with a flow channel and a temperature control medium, and the temperature control medium can flow in the flow channel to transfer the heat in one part of the temperature control assembly 14 to another part, thereby achieving the purpose of adjusting the temperature of the object in contact with the temperature control assembly 14.

[0430] In this way, the temperature control assembly 14 can absorb the heat generated during the operation of the battery assembly 12 to reduce the working temperature of the battery assembly 12, thereby improving the safety of the battery 10; meanwhile, the temperature control assembly 14 can directly radiate part of the heat to the outside through the wall of the accommodating box 11, thereby increasing the heat dissipation area and improving the temperature control effect.

[0431] The specific type of temperature control medium is not limited, such as water, etc.

[0432] It should be noted that the specific structure of the temperature control assembly 14 and the heat exchange principle have been applied in the related art, which will not be described here.

[0433] In some embodiments, the temperature control assembly 14 is located between the inner wall of the containing cavity 111a and the first shell wall 1212. In this way, the advantage of the large area of the first shell wall 1212 can be better utilized, the contact area between the temperature control assembly 14 and the battery monomer 121 is increased, and the heat generated during the operation of the battery 10 is more effectively transferred to the tank wall and radiated to the outside, thereby improving the temperature control effect.

[0434] In some embodiments, referring to Figure 8 , Figure 9 , Figure 31 , Figure 32 , Figure 47 , Figure 54 , the temperature control assembly 14 is located between the top side inner wall of the containing cavity 111a along the height direction of the containing cavity 111a and the top surface of the shell 1211 along the height direction of the containing cavity 111a.

[0435] In this way, the temperature control assembly 14 will not be squeezed by the gravity of the battery assembly 12 to affect the realization of its temperature control function.

[0436] In some embodiments in which the protruding part 12a is located at the top of the battery assembly 12, the temperature control assembly 14 is located between the bottom side inner wall of the containing cavity 111a along the height direction of the containing cavity 111a and the bottom surface of the battery assembly 12 along the height direction of the containing cavity 111a.

[0437] In this way, the probability of interference between the arrangement of the temperature control assembly 14 and the protruding part 12a is reduced.

[0438] It can be understood that it is necessary to fix the position of the temperature control assembly 14 in the battery 10 so that the temperature control effect of the temperature control assembly 14 can be fully exerted.

[0439] In some embodiments, referring to Figure 8 , Figure 9 , Figure 31 and Figure 32 , the battery 10 comprises a second adhesive layer 15, which is adhered between the inner wall of the containing cavity 111a and the outer surface of the temperature control assembly 14.

[0440] In this way, the relative position between the temperature control assembly 14 and the containing tank 11 is fixed, and the probability of relative movement between the two resulting in friction damage is reduced; at the same time, the temperature control assembly 14 can directly transfer heat to the containing tank 11 and radiate to the outside.

[0441] In some embodiments, referring to Figure 8 , Figure 9 , Figure 31 and Figure 32 , the battery 10 comprises a third adhesive layer 16, which is adhered between the inner wall of the accommodating cavity 111a and the outer surface of the battery assembly 12.

[0442] In this way, the relative position between the temperature control assembly 14 and the battery assembly 12 is fixed, reducing the probability of relative movement between the two and causing friction damage, and allowing better heat transfer between the temperature control assembly 14 and the battery assembly 12, improving the temperature control effect.

[0443] Referring to Figures 31 to 33 , in the embodiment in which the temperature control assembly 14 is located between the top side inner wall of the accommodating cavity 111a along the height direction of the accommodating cavity 111a and the top surface of the shell 1211 along the height direction of the accommodating cavity 111a, the third adhesive layer 16 is located between the top side inner wall of the accommodating cavity 111a along the height direction of the accommodating cavity 111a and the top surface of the temperature control assembly 14.

[0444] In this way, through the adhesion of the third adhesive layer 16, the force of the temperature control assembly 14 pressing against the battery assembly 12 under the action of gravity is reduced, thereby facilitating the normal operation of the battery assembly 12 and the temperature control assembly 14.

[0445] The embodiments of the present disclosure also provide a power-using device, which comprises any of the batteries 10 in the foregoing embodiments, and the battery 10 serves as a power source of the power-using device.

[0446] In this way, by providing the cooperation between the accommodating portion 111b and the protruding portion 12a, the overall volume of the power-using device is reduced, and the structure of the power-using device is more compact.

[0447] In some embodiments, referring to Figure 59 and Figure 60 , the power-using device is a vehicle 100, which comprises a seat 20 and any of the batteries 10 in the foregoing embodiments, and the boss 1111 is located on the side of the accommodating box 11 facing the seat 20.

[0448] The battery 10, as a power source of the vehicle 100, is used to provide power for the normal operation of the vehicle 100, such as driving, equipment power supply, etc.

[0449] The seat 20 is used for the occupant of the vehicle 100 to sit and place articles.

[0450] Thus, the volume of the battery 10 in the vehicle 100 is increased, and the capacity of the battery 10 is improved, so that the cruising range of the vehicle 100 is improved. Meanwhile, the flat box wall of the accommodating box 11 is arranged to face the ground, so that the bottom surface of the vehicle 100 is more flat, the wind resistance coefficient of the vehicle 100 is reduced, and the ground clearance of the vehicle 100 is improved, so that the wind resistance of the boss 1111 is reduced, and the damage of the battery 10 caused by the collision with foreign matters on the road is avoided.

[0451] The wind resistance coefficient is a parameter for describing the air resistance of an object in the air. The value thereof reflects the influence of the shape of the object on the air flow. The greater the wind resistance coefficient, the greater the air resistance encountered by the object during driving. Therefore, the wind resistance coefficient is directly related to the energy consumption of the vehicle 100 during driving.

[0452] The ground clearance is the distance between the ground and the rigid object at the bottom of the vehicle 100 during driving. The ground clearance is directly related to the passability of the vehicle 100.

[0453] In some embodiments, referring to Figure 59 , the vehicle 100 includes a vehicle body 50, the bottom side of the vehicle body 50 is open, and the battery 10 is arranged at the open position of the vehicle body 50 to form a passenger space 100a together with the vehicle body 50, and the seat 20 is located in the passenger space 100a.

[0454] The vehicle body 50, i.e., the white vehicle body, refers to the vehicle body after welding and before painting. The painted white vehicle body, together with the interior and exterior trim and the electronic and electrical system, and the chassis 60 system, and the powertrain system, forms the complete vehicle.

[0455] That is, the vehicle body 50 and the battery 10 together form the passenger compartment of the vehicle 100, and the boss 1214 is located in the passenger space 100a. Thus, the volume of the battery 10 is increased under the condition that the three-dimensional size of the vehicle 100 is limited, and the space utilization in the passenger space 100a is improved by using the space in the passenger space 100a.

[0456] In some embodiments, referring to Figure 59 , the vehicle 100 includes a chassis 60, the vehicle body 50 is arranged on the chassis 60, the chassis 60 includes the battery 10, and the first box wall 111 forms the bottom plate of the passenger space 100a.

[0457] That is, the battery 10 is part of the chassis 60. In this way, the battery 10 is beneficial to improve the overall structural strength of the chassis 60, the first box wall 111 as the floor of the passenger space 100a is beneficial to improve the utilization of the interior space, and at the same time, is beneficial to improve the structural strength of the overall passenger space 100a structure, thereby improving the safety of the vehicle 100.

[0458] It can be understood that a piece of felt or the like can be laid on the surface of the first box wall 111 to improve the passenger's sitting experience and visual experience.

[0459] It can be understood that the boss 1111 cooperates with the seat 20 to improve the utilization of the interior space of the vehicle 100.

[0460] In some embodiments, referring to Figures 59 to 65 , in the projection perpendicular to the vertical direction, part or all of the projection of the boss 1111 is located within the projection range of the seat 20.

[0461] It can be understood that, in the case that the passenger is sitting on the seat 20, due to the sitting posture of the passenger, the space below the contact surface with the seat 20 during the sitting of the passenger, including the seat 20 itself and the space below the seat 20, cannot or is difficult to be contacted by the limbs of the passenger. At least part of the boss 1111 is located in the space below the contact surface with the seat 20 during the sitting of the passenger.

[0462] In this way, the boss 1111 utilizes the space below the seat 20, reduces the probability of the passenger contacting the boss 1111 during sitting, thereby reducing the occupation of the normal activity space of the passenger by the arrangement of the boss 1111, improving the user experience, and improving the utilization of the interior space of the vehicle 100.

[0463] In some embodiments, referring to Figures 59 to 71 , the boss 1111 is located below the seat 20, that is, the top of the boss 1111 is lower than the vehicle 100 along the height direction of the vehicle 100.

[0464] In some embodiments, referring to Figures 60 to 62 , Figure 65 , the number of seats 20 is multiple, and at least one row of first gaps 20a is formed between the same row of seats 20 along the width direction of the vehicle 100, and the boss 1111 includes a first boss 1111a, part or all of the first boss 1111a is located in the first gap 20a.

[0465] The length direction of the vehicle 100 refers to the direction in which the three-dimensional size of the vehicle 100 has the maximum size value. Generally, the length direction of the vehicle 100 is also the advancing or retreating direction of the vehicle 100 during straight-line driving.

[0466] The width direction of the vehicle 100 refers to a direction in which a dimension of the vehicle 100 perpendicular to the length direction and the gravity direction is located in the three-dimensional dimension. The gravity direction is the vertical direction.

[0467] It can be understood that, in the case that the occupant is seated on the seat 20, due to the occupant's sitting posture, the occupant's legs are difficult to enter the first gap 20a.

[0468] In this way, the boss 1111 can utilize the space in the first gap 20a, while increasing the volume of the battery 10, reduce the probability of the occupant colliding with the boss 1111 during seating, reduce the interference of the boss 1111 to the normal activities of the occupant, and improve the space utilization rate in the vehicle 100.

[0469] The number of seats 20 in each row is not limited, for example, one, two, three, etc. It can be understood that other equipment in the vehicle 100, such as armrests, vehicle refrigerators, storage boxes, etc., can also be arranged in the first gap 20a to improve the space utilization rate in the vehicle and improve the user experience.

[0470] It can be understood that part of the boss 1111 is projected within the projection range of the seat 20, and part of the boss 1111 is located in the first gap 20a.

[0471] In some embodiments, referring to Figures 60 to 62 The plurality of seats 20 are divided into at least two rows arranged at intervals along the length direction of the vehicle 100, and the first boss 1111a extends along the length direction of the vehicle 100 to below the seat 20 of the adjacent row.

[0472] In this way, on the one hand, the first boss 1111a extends along the length direction of the vehicle 100, which is conducive to reducing the size of the first boss 1111a along the width direction of the vehicle 100, thereby reducing the interference of the first boss 1111a to the seating of multiple passengers in the vehicle, improving the user experience, reducing the probability of interference to the seating and activities of the passengers, and improving the space utilization rate of the battery 10 to the internal space of the vehicle 100, thereby increasing the capacity of the battery 10. On the other hand, the first boss 1111a can utilize more space in the first gap 20a, thereby further improving the space utilization rate in the vehicle 100.

[0473] It can be understood that the seat 20 adjacent to the first gap 20a along the length direction of the vehicle 100 has a low probability of being seated by the occupant on the part corresponding to the first gap 20a along the length direction of the vehicle 100.

[0474] In some embodiments, referring to Figures 66 to 71The second protrusions 1111b extend along the length direction of the vehicle 100 and are located on one side of the seats 20 along the width direction of the vehicle 100, and the seats 20 are located between the two second protrusions 1111b.

[0475] In this way, the second protrusions 1111b can reduce the interference with the leg and foot movement of the passenger, and improve the use experience of the passenger. In some embodiments, referring to Figures 66 to 71 The number of the second protrusions 1111b is two, and the two second protrusions 1111b are located at one end of the battery 10 along the width direction of the vehicle 100, and the seats 20 are located between the two second protrusions 1111b. That is, the seats 20 are located in the area between the two second protrusions 1111b.

[0476] In this way, it is beneficial to increase the space for the leg and foot movement of the passenger, further reduce the interference of the second protrusions 1111b with the leg and foot movement of the passenger, and effectively utilize the space of the edge along the width of the vehicle 100.

[0477] In some embodiments, referring to Figures 66 to 71 The second protrusions 1111b extend along the length direction to both ends of the battery 10 along the length direction of the vehicle 100, so as to further improve the space utilization of the battery 10 to the interior space of the vehicle 100 and increase the capacity of the battery 10.

[0478] In some embodiments, the second protrusions 1111b are arranged apart from the seats 20 along the width direction of the vehicle 100.

[0479] In this way, it is beneficial to increase the movement space for the leg and foot movement of the passenger and improve the ride experience of the user.

[0480] In some embodiments, part of the second protrusions 1111b is located below the seats 20. In this way, it is beneficial to reduce the size of the battery 10 and the vehicle 100 along the width direction, so that the structure of the battery 10 and the vehicle 100 is more compact.

[0481] In some embodiments, referring to Figures 63 to 65 The protrusions 1111 include one or more third protrusions 1111c, the third protrusions 1111c extend along the width direction of the vehicle 100, and at least part of the third protrusions 1111c are located below the seats 20 in the same row. In this way, the third protrusions 1111c can fully utilize the space below the seats 20 along the width direction of the vehicle 100, while reducing the occupation of the space between the two adjacent rows of seats 20, reducing the interference with the movement of the passenger, and improving the experience of the passenger.

[0482] In some embodiments, referring to Figure 63A portion of the third protrusion 1111c is located below the seat 21, and another portion is located in the first gap 20a.

[0483] In this way, the third protrusion 1111c can better utilize the space below the seat 20 and the space in the first gap 20a, which is conducive to improving the space utilization of the battery 10 in the vehicle 100 and increasing the capacity of the battery 10.

[0484] It can be understood that there are a plurality of first gaps 20a between the plurality of seats 20 in the same row, and the third protrusion 1111c extends along the width direction of the vehicle 100 and passes through all the first gaps 20a and is located below each seat 20 in the same row to improve the space utilization.

[0485] In some embodiments, referring to Figures 63 to 65 , the number of seats 20 is a plurality, and the plurality of seats 20 are divided into at least two rows arranged along the length direction of the vehicle 100. One or more rows of seats 20 extend along the width direction of the vehicle 100, and the width of the seat 20 is not less than the width of the top surface of the battery 10. The third protrusion 1111c extends along the width direction and is located below the seat 20 in the row. That is, the seat 20 in the row can fully utilize the space in the vehicle along the width direction of the vehicle 100 in order to carry more passengers at the same time.

[0486] In this way, the third protrusion 1111c can increase its size along the width direction of the vehicle 100 as much as possible, thereby better utilizing the space below the seat 20 and being conducive to improving the space utilization of the battery 10 in the vehicle 100 and increasing the capacity of the battery 10.

[0487] It can be understood that the protrusion 1111 is adapted to the specific structure of the seat 20.

[0488] In some embodiments, referring to Figure 60 , Figure 61 , Figure 63 , Figure 65 and Figure 70 , the seat 20 includes a seat cushion 21, and at least a portion of the seat cushion 21 and the battery 10 are spaced apart along the height direction of the vehicle 100 to form a second gap 20b. At least a portion of the protrusion 1111 is located in the second gap 20b and is spaced apart from the seat cushion 21 along the vertical direction.

[0489] The seat cushion 21 is used for passengers to sit on to bear the weight of the passengers.

[0490] In this way, the probability of damage to the protrusion 1111 due to the direct contact between the protrusion 1111 and the seat cushion 21 and the pressure of the passengers sitting on the protrusion 1111 can be reduced.

[0491] The specific way of forming the second gap 20b is not limited.

[0492] For example, referring to Figure 60 , Figure 61 , Figure 63 , Figure 65 and Figure 70 , the seat 20 comprises a leg 23, the seat cushion 21 is spaced apart from the battery 10 in the vertical direction to form a second gap 20b, and the leg 23 is connected between the seat cushion 21 and the battery 10.

[0493] In this way, the spacing between the seat cushion 21 and the boss 1111 is facilitated, the shape of the seat cushion 21 is regular, and the seat cushion 21 is easy to place. At the same time, it is beneficial to the release of heat during the operation of the battery 10, and it is convenient to check, disassemble and maintain through the second gap 20b. It is also convenient for the passenger to stretch his feet into the second gap 20b, and it is convenient for the passenger to stretch his sitting posture, thereby improving the riding comfort.

[0494] It can be understood that the connection position of the leg 23 and the battery 10 is not limited, referring to Figure 63 , it can be located on the boss 1111; referring to Figure 60 , it can also be located in other areas of the first box wall 111 except the boss 1111.

[0495] The leg 23 and the battery 10 are detachably connected.

[0496] It can be understood that the number of legs 23 is not limited, and can be one or more.

[0497] In some embodiments, referring to Figure 60 , the number of legs 23 is multiple, and the multiple legs 23 are spaced apart along the width direction of the vehicle 100. Part or all of the boss 1111 is located between two adjacent legs 23 along the width direction of the vehicle 100.

[0498] In this way, the boss 1111 is arranged to utilize the space between the two legs 23, thereby improving the space utilization of the battery 10 to the internal space of the vehicle 100 and increasing the capacity of the battery 10.

[0499] It can be understood that the seat cushion 21 comprises a cushion 211 made of a material capable of elastic deformation such as sponge, so as to improve the riding experience of the passenger.

[0500] It can be understood that the shape of the cushion 211 needs to be constrained to support the seat cushion 21.

[0501] In some embodiments provided with the cushion 211, referring to Figure 59 , the boss 1111 is embedded in the cushion 211 to support the seat cushion 21 in the height direction of the vehicle 100.

[0502] That is, the boss 1111 forms at least a part of a structure that supports the cushion 211. Thus, it is advantageous to simplify the structure of the seat 20, improve the utilization of the interior space of the seat 20, and reduce the production cost.

[0503] It is understood that the seat 21 includes a skeleton that is inserted into and fitted with the cushion 211 to constrain the shape of the cushion 211.

[0504] In some embodiments, the skeleton is connected with the boss 1111 to form a force transmission path of the cushion 211, the skeleton, and the boss 1111, so as to transmit the weight of the occupant to the battery 10.

[0505] The various embodiments / implementation forms provided by the present disclosure can be combined with each other without producing contradictions.

[0506] The above merely describes the preferred embodiments of the present disclosure and is not intended to limit the present disclosure. The present disclosure can have various modifications and changes for those skilled in the art. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present disclosure shall be included in the protection scope of the present disclosure.

[0507] Industrial applicability

[0508] The embodiments of the present disclosure provide a battery and an electric device that are advantageous to improve the utilization of space.

Claims

1. A battery, characterized by, The battery includes: a containing box provided with a containing cavity, the containing box including a first box wall; a battery assembly contained in the containing cavity, the battery assembly including a protruding portion; the first box wall is provided with a containing portion, at least part of the protruding portion is contained in the containing portion.

2. The battery of claim 1, wherein, Along the thickness direction of the first box wall, part of the projection of the battery assembly is located outside the projection of the containing portion.

3. The battery of claim 1, wherein, The battery assembly further includes a plurality of battery cells, the battery cells including a shell, the shell having a first shell wall, the protruding portion being provided on the first shell wall.

4. The battery of claim 3, wherein, The battery assembly further includes a busbar, the battery cells further including a pole, the pole being provided on the first shell wall, the busbar electrically connecting the poles of two battery cells, the protruding portion including the busbar, at least part of the busbar being contained in the containing portion.

5. The battery of claim 4, wherein, At least part of the pole is contained in the containing portion.

6. The battery according to claim 4 or 5, characterized in that, The poles of at least two battery cells are located in the same containing portion.

7. The battery of claim 4, wherein, The distance between the inner wall of the containing portion and the busbar along a first direction is not less than 1% of the size of the containing portion along the first direction, and the first direction is perpendicular to the thickness direction of the first box wall.

8. The battery of claim 4, wherein, The distance between the inner wall of the containing portion and the busbar along a first direction is in the range of 2% to 10% of the size of the containing portion along the first direction.

9. The battery of claim 1, wherein, The battery includes an insulating member provided on the inner wall of the containing portion.

10. The battery of claim 9, wherein, The battery assembly includes a battery cell, the battery cell including a pole, and the insulating member is arranged opposite to the pole.

11. The battery of claim 3, wherein, The first shell wall includes a protrusion, the protruding portion includes the protrusion, and at least part of the protrusion is contained in the containing portion.

12. The battery of claim 11, wherein, The protrusion is provided with a pole.

13. The battery of claim 12, wherein, The number of poles is two and the polarities are opposite, and the two poles are provided on the same protrusion.

14. The battery of claim 12, wherein, The number of poles is two and the polarities are opposite, and the two poles are respectively provided on two protrusions.

15. The battery according to claim 13 or 14, characterized in that The two poles are spaced apart along the length direction of the first shell wall.

16. The battery of claim 13 or 14, wherein, The two poles are spaced apart along the width direction of the first shell wall.

17. The battery of claim 11, wherein, The battery cell further includes an electrode assembly, the electrode assembly being contained in the shell, part of the first shell wall being recessed to form a avoiding slot, the avoiding slot being located on the side of the protrusion close to the electrode assembly, and part of the electrode assembly being located in the avoiding slot.

18. The battery of claim 17, wherein, The electrode assembly includes a main body and a tab, the tab being provided on one side edge of the main body and being electrically connected with the main body, and at least part of the tab is located in the avoiding slot.

19. The battery of claim 18, wherein, At least part of the tab is located in the containing portion.

20. The battery of claim 18, wherein, The battery cell further includes a pole provided on the first shell wall, the electrode assembly further includes a adapter sheet, the tab and the pole are electrically connected through the adapter sheet, and at least part of the tab is located in the containing portion. And / or, at least part of the adapter sheet is located in the containing portion.

21. The battery of claim 18, wherein, Part of the main body is located in the avoiding slot.

22. The battery of claim 11, wherein, The shell includes a cover plate and a shell body, the cover plate being provided on the opening of the shell body, and the protrusion is provided on the cover plate. And / or, the protrusion is provided on the shell body.

23. The battery of claim 11, wherein, The number of the protrusions on the first shell wall is two, and the two protrusions are located at opposite ends of the first shell wall.

24. The battery of claim 11, wherein, The distance between the protrusion and one end of the first shell wall in the length direction is greater than the distance between the protrusion and the other end of the first shell wall in the length direction.

25. The battery of claim 24, wherein the electrolyte comprises a lithium salt. The protrusion is located at one end of the first shell wall in the length direction of the first shell wall.

26. The battery of claim 11, wherein, The protrusion is located at the center of the first shell wall in the length direction of the first shell wall.

27. The battery of claim 11, wherein, The distance between the center of the first shell wall in the length direction and the center of the protrusion in the length direction of the first shell wall is a first distance, and the ratio of the first distance to the length of the first shell wall is greater than 0 and does not exceed 47.5%.

28. The battery of claim 27, wherein the lithium metal anode is a lithium foil anode. The ratio of the first distance to the length of the first shell wall ranges from 40% to 47.5%.

29. The battery of claim 11, wherein, The center of the first shell wall in the width direction coincides with the center of the protrusion in the width direction of the first shell wall.

30. The battery of claim 11, wherein, The distance between the center of the first shell wall in the width direction and the center of the protrusion in the width direction of the first shell wall is a second distance, and the ratio of the second distance to the width of the first shell wall is greater than 0 and does not exceed 25%.

31. The battery of claim 11, wherein, The length of the battery cell is not less than 350mm; And / or, the width of the battery cell ranges from 5mm to 50mm; And / or, the height of the battery cell ranges from 80mm to 200mm.

32. The battery of claim 11, wherein, The length of the protrusion is the same as the length of the first shell wall, and the ratio of the length of the protrusion to the length of the first shell wall ranges from 2.5% to 97.5%; And / or, the width of the protrusion is the same as the width of the first shell wall, and the ratio of the width of the protrusion to the width of the first shell wall ranges from 25% to 100%; And / or, the height of the protrusion is not more than 45mm.

33. The battery of claim 11, wherein, The length of the protrusion is the same as the length of the first shell wall, and the ratio of the length of the protrusion to the length of the first shell wall ranges from 5% to 40%; And / or, the width of the protrusion is the same as the width of the first shell wall, and the ratio of the width of the protrusion to the width of the first shell wall ranges from 60% to 90%; And / or, the height of the protrusion ranges from 2mm to 10mm.

34. The battery of claim 11, wherein, The battery cell comprises an explosion-proof valve, and the explosion-proof valve is located on the protrusion; or the explosion-proof valve and the protrusion are located on the first shell wall, and the explosion-proof valve is spaced apart from the protrusion.

35. The battery of claim 11, wherein, The battery cell comprises an explosion-proof valve, and the explosion-proof valve is located on the protrusion; or the explosion-proof valve and the protrusion are located on the first shell wall, and the explosion-proof valve is spaced apart from the protrusion. The battery cell comprises an explosion-proof valve, and the explosion-proof valve is located on the protrusion; or the explosion-proof valve and the protrusion are located on the first shell wall, and the explosion-proof valve is spaced apart from the protrusion.

36. The battery of claim 11, wherein, One battery cell comprises a plurality of protrusions, and the plurality of protrusions are located in the same accommodating portion.

37. The battery of claim 1, wherein, The protrusions of a plurality of battery cells are located in the same accommodating portion.

38. The battery of claim 11, wherein, One of the battery cells includes a plurality of the protrusions, the first box wall includes a plurality of the accommodating portions, and each of the protrusions in the single battery cell is located in a different accommodating portion.

39. The battery of claim 11, wherein, A plurality of the battery cells are arranged along a first direction, one of the battery cells includes a plurality of the protrusions, and at least part of the protrusions are located at one end of the battery cell along the first direction. In two adjacent battery cells along the first direction, the protrusions located at the ends of the two battery cells close to each other along the first direction are located in the same accommodating portion.

40. The battery of claim 1, wherein, The battery assembly further includes a sampling member, at least part of the sampling member is accommodated in the accommodating portion. And / or, the battery assembly further includes a battery management system, at least part of the battery management system is accommodated in the accommodating portion. And / or, the battery assembly further includes a relay, at least part of the relay is accommodated in the accommodating portion. And / or, the battery assembly further includes a high-voltage power distribution unit, at least part of the high-voltage power distribution unit is accommodated in the accommodating portion. And / or, the battery assembly further includes a high-low voltage wire harness, at least part of the high-low voltage wire harness is accommodated in the accommodating portion.

41. The battery of claim 1, wherein, The accommodating portion includes a first accommodating sub-portion and a second accommodating sub-portion, part of the protruding portion is accommodated in the space of the first accommodating sub-portion, and the other part of the protruding portion is accommodated in the space of the second accommodating sub-portion.

42. The battery of claim 1, wherein, The outer surface of the first box wall is protruded to form a boss, and the boss is located on the side of the accommodating portion away from the accommodating cavity.

43. The battery of claim 42, wherein, The length direction of the boss is the same as the length direction of the accommodating cavity, and the length dimension of the boss is the same as the length dimension of the accommodating cavity. Alternatively, the length direction of the boss is the same as the width direction of the accommodating cavity, and the length dimension of the boss is the same as the width dimension of the accommodating cavity.

44. The battery of claim 42 or 43, wherein the electrolyte comprises a lithium salt. The width dimension of the boss is not more than 500 mm. And / or, the height dimension of the boss is not more than 300 mm.

45. The battery of claim 42 or 43, wherein the electrolyte comprises a lithium salt. The width dimension of the boss ranges from 50 mm to 300 mm. And / or, the height dimension of the boss ranges from 5 mm to 100 mm.

46. The battery of claim 42, wherein, The battery assembly further includes a battery cell, the battery cell includes a shell, the shell has a first shell wall, the first shell wall includes a protrusion, at least part of the protrusion is located in the accommodating portion, and the height dimension of the protrusion is not more than 77% of the height dimension of the boss.

47. The battery of claim 46, wherein, The height dimension of the protrusion accounts for 36% to 53% of the height dimension of the boss.

48. The battery of claim 42, wherein, The height dimension of the protruding portion is not more than 94% of the height dimension of the boss.

49. The battery of claim 48, wherein, The height dimension of the protruding portion accounts for 74% to 86% of the height dimension of the boss.

50. The battery of claim 42, wherein, Part or all of the boss is in a detachable configuration.

51. The battery of claim 50, wherein, The first box wall comprises a box wall body and a mounting plate, the box wall body is provided with a through hole, the through hole communicates with the accommodating cavity, the edge of the through hole is provided with a mounting step extending away from the accommodating cavity, and the mounting plate is detachably covered on the mounting step to cover the through hole.

52. The battery of claim 1, wherein, The battery comprises a first adhesive layer, and the first adhesive layer is adhered between the inner wall of the accommodating cavity and the battery assembly.

53. The battery of claim 3, wherein, The battery comprises a first adhesive layer, and the accommodating part is located at the top side of the accommodating box in the height direction, the first shell wall is the top wall of the battery monomer in the height direction of the accommodating cavity, and the first adhesive layer is adhered between the top side inner wall of the accommodating cavity in the height direction of the accommodating cavity and the first shell wall. The first adhesive layer is adhered between the bottom side inner wall of the accommodating cavity in the height direction of the accommodating cavity and the bottom wall of the battery monomer in the height direction of the accommodating cavity.

54. The battery of claim 1, wherein, The battery comprises a temperature control assembly, and the temperature control assembly is clamped between the inner wall of the accommodating cavity and the battery assembly.

55. The battery of claim 54, wherein, The temperature control assembly is located between the inner wall of the accommodating cavity and the first shell wall.

56. The battery of claim 54, wherein, The temperature control assembly is located between the top side inner wall of the accommodating cavity in the height direction of the accommodating cavity and the top surface of the battery assembly in the height direction of the accommodating cavity. The temperature control assembly is located between the bottom side inner wall of the accommodating cavity in the height direction of the accommodating cavity and the bottom surface of the battery assembly in the height direction of the accommodating cavity.

57. The battery of claim 54, wherein, The battery comprises a second adhesive layer, and the second adhesive layer is adhered between the inner wall of the accommodating cavity and the outer surface of the temperature control assembly. The battery comprises a third adhesive layer, and the third adhesive layer is adhered between the inner wall of the accommodating cavity and the outer surface of the battery assembly.

58. An electrical device, comprising: The electric device comprises the battery of any one of claims 1 to 57, and the battery serves as the power supply of the electric device.

59. The powered device of claim 58, wherein, The electric device is a vehicle, the vehicle comprises a seat and the battery of any one of claims 42 to 57, and the boss is located on the side of the accommodating box facing the seat.

60. The powered device of claim 59, wherein, The vehicle comprises a vehicle body part, the bottom side of the vehicle body part is open, the battery is arranged at the open position of the vehicle body part to jointly form a passenger space with the vehicle body part, and the seat is located in the passenger space.

61. The powered device of claim 60, wherein, The vehicle comprises a chassis, the vehicle body part is arranged on the chassis, the chassis comprises the battery, and the first box wall forms the bottom plate of the passenger space.

62. The powered device of claim 59, wherein, In a projection perpendicular to the vertical direction, part or all of the projection of the boss is located in the projection range of the seat.

63. The powered device of claim 59, wherein, The number of the seats is a plurality, and at least one row is formed by spacing, a first gap is formed between the seats in the same row in the width direction of the vehicle, the boss comprises a first boss, and part or all of the first boss is located in the first gap.

64. The powered device of claim 63, wherein, The plurality of seats are divided into at least two rows arranged at intervals along a length direction of the vehicle, and the first protrusion extends along the length direction of the vehicle to below another row of the seats adjacent to the row.

65. The powered device of claim 59, wherein, The protrusion includes a second protrusion extending along a length direction of the vehicle and located on one side of the seats along a width direction of the vehicle.

66. The powered device of claim 65, wherein, The number of the second protrusion is two, and the two second protrusions are respectively located at one end of the battery along the width direction of the vehicle, and the seats are located between the two second protrusions.

67. The powered device of claim 65, wherein, The second protrusion and the seats are arranged at intervals along the width direction of the vehicle. And / or, a part of the second protrusion is located below the seats.

68. The powered device of claim 59, wherein, The protrusion includes one or more third protrusions extending along a width direction of the vehicle, and at least a part of the third protrusion is located below the seats in the same row.

69. The powered device of claim 59, wherein, The seat includes a seat cushion, and at least a part of the seat cushion and the battery are arranged at intervals along a height direction of the vehicle to form a second gap, and at least a part of the protrusion is located in the second gap and arranged at intervals along a vertical direction with the seat cushion.

70. The powered device of claim 69, wherein, The seat includes a leg, and the seat cushion and the battery are arranged at intervals along a vertical direction to form the second gap, and the leg is connected between the seat cushion and the battery.

71. The powered device of claim 70, wherein, The number of the leg is a plurality, and the plurality of legs are arranged at intervals along the width direction of the vehicle, and a part or all of the protrusion is located between two legs adjacent along the width direction of the vehicle.

72. The powered device of claim 69, wherein, The seat cushion includes a cushion pad, and the protrusion is embedded in the cushion pad to support the seat cushion along the height direction of the vehicle.

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