Battery and electrical apparatus

Abstract

A battery (10), the battery (10) comprising an accommodating box (11) and a battery assembly (12), the accommodating box (11) being provided with an accommodating cavity (111a), and the accommodating box (11) comprising a first box wall (111); the battery assembly (12) is accommodated in the accommodating cavity (111a), and the battery assembly (12) comprises a protruding part (12a); the first box wall (111) is provided with an accommodating part (111b), and at least part of the protruding part (12a) is accommodated in the accommodating part (111b).

Description

Battery and power device

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure is based on Chinese patent application number 202311265770.4, filed on September 27, 2023, with the title “A battery and an electrical device”, Chinese patent application number 202322642524.8, filed on September 27, 2023, with the title “A vehicle”, and Chinese patent application number 202311264394.7, filed on September 27, 2023, with the title “A battery cell, a cover assembly, a battery and an electrical device”, and claims the priority of the above Chinese patent applications. The entire contents of the above Chinese patent applications are hereby incorporated into this disclosure by reference. Technical Field

[0003] The embodiments of the present disclosure relate to the technical field of battery production, and in particular to a battery and an electrical device. Background Art

[0004] New energy batteries are being used more and more widely in life and industry. For example, new energy vehicles equipped with batteries have been widely used. In addition, batteries are also being increasingly used in energy storage fields.

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

[0006] In order to achieve safe, accurate and efficient control of battery charging and discharging, the battery is equipped with electrical components such as busbars, sampling structures, battery management systems, high-voltage distribution units, etc., which are used to electrically connect with battery cells to achieve control of the battery cells.

[0007] Since various electrical components have different sizes and shapes, they also need to occupy space in the storage box, which easily leads to an increase in the overall size of the storage box, which is not conducive to the adaptability of the battery.

[0008] Summary of the Invention

[0009] In view of this, the embodiments of the present disclosure hope to provide a battery and an electrical device that are conducive to improving space utilization.

[0010] To achieve the above objectives, the technical solution of the embodiment of the present disclosure is implemented as follows:

[0011] An embodiment of the present disclosure provides a battery, comprising:

[0012] A storage box is provided with a storage cavity, and the storage box includes a first box wall;

[0013] a battery assembly accommodated in the accommodation cavity, wherein the battery assembly includes a protruding portion;

[0014] The first box wall is provided with an accommodating portion, and at least a portion of the protruding portion is accommodated in the accommodating portion.

[0015] The battery in the embodiment of the present disclosure, by providing a receiving portion on the first box wall, is conducive to, on the one hand, making the shape of the space inside the receiving box better adaptable to the outer contour shape formed by the battery assembly, and is conducive to reducing the requirements for the layout of each component in the battery assembly; on the other hand, it is conducive to reducing the overall size and volume of the receiving box, improving the space utilization rate inside the receiving box, reducing the overall volume of the battery, and improving the energy density of the battery.

[0016] In some embodiments, along the thickness direction of the first box wall, a portion of the projection of the battery assembly is located outside the projection of the accommodating portion. This allows the battery assembly to more fully utilize the space within the accommodating cavity, improving the space utilization of the battery and facilitating an increase in battery capacity.

[0017] In some embodiments, the battery assembly further includes a plurality of battery cells, each of which includes a housing having a first wall, and the protruding portion is disposed on the first wall. This allows a portion of the first wall to enter the housing, thereby increasing the volume of the battery cells and facilitating the space within the housing to accommodate battery cells of varying external shapes. This facilitates a more compact arrangement of battery cells of varying external shapes within the housing, thereby increasing the battery's energy density.

[0018] In some embodiments, the battery assembly further includes a busbar, and the battery cells further include poles, the poles being disposed on the first shell wall. The busbar electrically connects the poles of the two battery cells, and the protruding portion includes the busbar, at least a portion of which is located within the accommodating portion. This facilitates better accommodating the spatial shape within the accommodating box to the arrangement of the busbar and the battery cells, allowing the shape of the accommodating cavity to adapt to the shape of the battery cells, thereby reducing the gap between the inner wall of the accommodating cavity and the battery cells and improving the space utilization of the battery.

[0019] In some embodiments, at least a portion of the pole is accommodated in the accommodation portion. This allows the busbar connected to the pole to be more reasonably arranged in the accommodation portion, thereby improving space utilization within the accommodation cavity and further increasing the capacity of the battery.

[0020] In some embodiments, the poles of at least two battery cells are located in the same receiving portion, which facilitates electrically connecting the poles of different battery cells via a busbar in one receiving portion, thereby making the battery structure more compact.

[0021] In some embodiments, the spacing between the inner wall of the housing portion and the current collector along a first direction is no less than 1% of the dimension of the housing portion along the first direction, where the first direction is perpendicular to the thickness of the first wall. This helps reduce the probability of contact between the current collector and the inner wall of the housing portion, allowing the battery assembly to function properly.

[0022] In some embodiments, the spacing between the inner wall of the receiving portion and the current collector along the first direction accounts for 2% to 10% of the size of the receiving portion along the first direction, thereby further reducing the probability of the current collector contacting the inner wall of the receiving portion.

[0023] In some embodiments, the battery includes an insulating member disposed on the inner wall of the housing. The insulating properties of the insulating member can reduce the risk of contact between the battery assembly and the inner wall of the housing, thereby reducing the risk of charge transfer between the battery assembly and the housing, and thus reducing the risk of short circuits and other problems during battery use.

[0024] In some embodiments, the battery assembly includes a battery cell, each of which includes a terminal, and the insulating member is disposed opposite the terminal. This reduces the probability of the terminal contacting the container due to relative movement between the battery assembly and the container, thereby reducing the risk of the battery cell short-circuiting due to contact between the terminal and the container.

[0025] In some embodiments, the first shell wall includes a protrusion, the protruding portion includes the protrusion, and at least a portion of the protrusion is located within the accommodating portion. Thus, by having the protrusion located within the accommodating portion, the distance between the remaining portion of the first shell wall and the inner wall of the accommodating cavity is reduced, thereby reducing the volume of the accommodating cavity, thereby reducing the three-dimensional dimensions of the accommodating box, reducing the overall volume of the battery, and facilitating improved energy density and space utilization of the battery.

[0026] In some embodiments, the protrusion is provided with a terminal post. This helps improve the space utilization within the protrusion, reduces the redundant volume within the housing, and makes the space within the battery cell more compact, thereby reducing the total volume and outer dimensions of the battery cell, thereby increasing the number of battery cells that can be accommodated in the battery, and improving the battery's energy density and space utilization.

[0027] In some embodiments, there are two poles with opposite polarities, and the two poles are disposed on the same protrusion. This facilitates providing mounting locations for both poles by only manufacturing one protrusion, thereby reducing the number of manufacturing steps for the first shell wall and lowering production costs.

[0028] In some embodiments, there are two terminals with opposite polarities, and the two terminals are respectively provided on the two protrusions. This, on the one hand, helps reduce the volume of a single protrusion, making the structure more compact and helping to reduce the size of the battery; on the other hand, it helps to space the two terminals apart, reducing the risk of short circuits between the two terminals and improving the safety of the battery cells.

[0029] In some embodiments, the two terminals are spaced apart along the length of the first shell wall. This maximizes the spacing between the two protrusions, thereby facilitating the formation of a relatively large flat area in the portion of the first shell wall between the two protrusions. Furthermore, given a given battery volume, other components with larger outer dimensions can be easily arranged in this area, facilitating the placement of other components within the battery. This also helps reduce the battery's volume, improves internal space utilization, and makes the battery more compact.

[0030] In some embodiments, the two poles are spaced apart along the width direction of the first shell wall. This arrangement of the two poles along the width direction of the first shell wall facilitates shortening the distance between poles of different polarities between two adjacent battery cells, thereby facilitating a reduction in the size of the current busbar and, in turn, the battery.

[0031] In some embodiments, the battery cell further includes an electrode assembly, which is housed within the shell. A portion of the first shell wall is recessed to form a relief groove, the relief groove being located on a side of the protrusion closer to the electrode assembly, with a portion of the electrode assembly located within the relief groove. This facilitates facilitating the first shell wall to be as close as possible to the electrode assembly while maintaining a constant size, thereby effectively reducing the volume within the shell and allowing as much of the electrode assembly as possible to extend into the relief groove. This helps reduce redundant volume within the battery cell, making the space within the battery cell more compact, thereby reducing the total volume and outer dimensions of the battery cell, and thereby increasing the number of battery cells that can be accommodated within the battery, thereby improving the battery's energy density and space utilization.

[0032] In some embodiments, the electrode assembly includes a main body and a tab, wherein the tab is disposed on a side edge of the main body and is electrically connected to the main body, and at least a portion of the tab is located in the avoidance groove.

[0033] In some embodiments, at least a portion of the tab is located in the receiving portion, which is beneficial for improving space utilization within the receiving box and making the portion of the battery cell outside the receiving portion more regular in shape.

[0034] In some embodiments, the battery cell further includes a pole, which is disposed on the first shell wall. The electrode assembly further includes an adapter plate, and the tab is electrically connected to the pole via the adapter plate. At least a portion of the tab is located in the accommodating portion, which is beneficial for improving space utilization within the accommodating box and making the portion of the battery cell located outside the accommodating portion more regular in shape.

[0035] And / or, at least part of the adapter plate is located in the accommodating portion. In this way, part or all of the adapter plate is located in the accommodating portion, which can improve the space utilization rate of the space in the accommodating box and help make the shape of the part of the battery cell located outside the accommodating portion more regular.

[0036] In some embodiments, a portion of the main body is located in the avoidance groove, thereby facilitating improved space utilization within the storage box.

[0037] In some embodiments, the housing includes a cover plate and a body, the cover plate is provided to cover the opening of the body, and the protrusion is provided on the cover plate. Thus, by providing the protrusion on the cover plate, it is convenient to allow a portion of the electrode assembly to directly enter or exit the space of the protrusion during the process of installing and removing the cover plate, thereby improving the efficiency of installing and removing the battery cell;

[0038] And / or, the protrusion is provided on the shell body, so that during the assembly of the battery cell, a part of the electrode assembly can be placed into the space of the protrusion first, and the electrode assembly is stopped by the protrusion, thereby reducing the probability of the electrode assembly moving and failing to function during the process of disassembling and assembling the cover plate.

[0039] In some embodiments, the number of protrusions on the first shell wall is two, and the two protrusions are respectively located at one of the opposite ends of the first shell wall. This facilitates each protrusion to be electrically connected to a corresponding pole and pole piece of the same polarity, which helps reduce the probability of short circuits. It also helps to form a large flat area in the portion of the first shell wall between the two protrusions. Furthermore, when the battery volume is fixed, other components with larger outer dimensions in the battery can be arranged in this area, providing convenience for the arrangement of other components in the battery. At the same time, it helps to reduce the volume of the battery, improve the space utilization inside the battery, and make the battery more compact.

[0040] In some embodiments, the distance between the protrusion and one end of the first shell wall in the longitudinal direction is greater than the distance between the protrusion and the other end of the first shell wall in the longitudinal direction. In this way, when the internal volume of the battery is constant, other components with larger external dimensions in the battery can be arranged in a larger area, which provides convenience for the arrangement of other components in the battery. At the same time, it is beneficial to reduce the volume of the battery, improve the space utilization inside the battery, and make the battery more compact.

[0041] In some embodiments, the protrusion is located at one end of the first shell wall along its length. This maximizes the area of ​​the first shell wall located at the other end along its length, away from the protrusion. This facilitates placement of other battery components with larger outer dimensions in this area, facilitating the placement of other battery components. This also helps reduce the battery's volume, improves internal space utilization, and makes the battery more compact.

[0042] In some embodiments, the protrusion is located at the center of the first shell wall along its length. This helps to make the battery cell structure symmetrical about the first center plane, facilitating adjustment of the placement of multiple battery cells in the battery, thereby improving the adaptability of the battery cells.

[0043] In some embodiments, the distance between the center of the first shell wall along its length and the center of the protrusion along the length 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%. This facilitates forming a large flat area along the length of the first shell wall, making it easier to arrange other components with larger outer dimensions in the battery in this area, thereby facilitating the arrangement of other components in the battery.

[0044] In some embodiments, the ratio of the first spacing to the length of the first shell wall is in a range of 40% to 47.5%. This further facilitates forming a relatively large flat area on both sides or one side of the protrusion along the length of the first shell wall, facilitating the placement of other battery components with larger outer dimensions in this area.

[0045] In some embodiments, the center position of the first shell wall along its width coincides with the center position of the protrusion along the width of the first shell wall. This further facilitates forming a large flat area along the width of the first shell wall, making it easier to arrange other components of the battery with larger outer dimensions in this area.

[0046] In some embodiments, the distance between the center of the first shell wall along its width and the center of the protrusion along the width 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%. This helps to leave a certain amount of redundancy in the width of the protrusion, facilitating sealing between the first shell wall and other parts.

[0047] In some embodiments, the length of the battery cell is not less than 350 mm, which is conducive to the electrochemical reaction between the electrode assembly and the electrolyte in the battery cell to store or release sufficient electrical energy, and is conducive to the total electrical energy in the battery meeting the demand;

[0048] And / or, the width of the battery cell is in the range of 5 mm to 50 mm, so that the size of the battery cell is convenient for transportation and better adapted to the size of storage boxes of different sizes;

[0049] And / or, the height of the battery cell ranges from 80 mm to 200 mm, so that the size of the battery cell is convenient for transportation and better adapts to the sizes of storage boxes of different sizes.

[0050] In some embodiments, the length direction of the protrusion is the same as the length direction of the first shell wall, and the ratio of the length dimension of the protrusion to the length dimension of the first shell wall is in a range of 2.5% to 97.5%. This is conducive to ensuring that the space within the protrusion meets the requirement of accommodating a portion of the electrode assembly;

[0051] And / or, the width direction of the protrusion is the same as the width direction of the first shell wall, and the ratio of the width dimension of the protrusion to the width dimension of the first shell wall is in a range of 25% to 100%, so that the space within the protrusion can meet the requirement of accommodating a part of the electrode assembly;

[0052] And / or, the height of the protrusion does not exceed 45 mm; this is conducive to ensuring that the space within the protrusion meets the requirement of accommodating a part of the electrode assembly.

[0053] In some embodiments, the length direction of the protrusion is the same as the length direction of the first shell wall, and the ratio of the length of the protrusion to the length of the first shell wall is in a range of 5% to 40%. This is more conducive to ensuring that the space within the protrusion meets the requirement of accommodating a portion of the electrode assembly.

[0054] And / or, the width direction of the protrusion is the same as the width direction of the first shell wall, and the ratio of the width of the protrusion to the width of the first shell wall is in a range of 60% to 90%, which is more conducive to ensuring that the space within the protrusion meets the requirement of accommodating a portion of the electrode assembly;

[0055] And / or, the height of the protrusion ranges from 2 mm to 10 mm, which further helps to ensure that the space within the protrusion meets the requirement of accommodating a part of the electrode assembly.

[0056] In some embodiments, the battery cell includes an explosion-proof valve, which is located on the protrusion. This is beneficial to improving the space utilization rate of the space inside the protrusion, making the space inside the battery cell more compact, thereby helping to reduce the total volume and outer contour dimensions of the battery cell; alternatively, 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; this is beneficial to reducing the volume of the protrusion; the advantage of having a larger layout area on the first shell wall can be utilized. On the one hand, it is beneficial to arrange an explosion-proof valve with a 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 airflow after the explosion-proof valve is opened adapt to the arrangement of each battery cell in the battery, thereby improving the safety of battery use.

[0057] In some embodiments, the battery cell includes an explosion-proof valve, which is located on the outer surface of the battery cell away from the first shell wall. This helps to keep the high-temperature airflow away from other components in the battery that are electrically connected to the protrusion, thereby reducing the impact of the high-temperature airflow on other battery cells and other components, reducing the probability of thermal runaway chain reaction in the battery, and improving the safety of the battery.

[0058] Alternatively, the explosion-proof valve is located on the wall of the outer surface of the battery cell adjacent to the first shell wall. In this way, the spray direction of the high-temperature airflow ejected from the explosion-proof valve is away from other components in the battery that are electrically connected to the protrusion, thereby reducing the impact of the high-temperature airflow on other battery cells and other components, reducing the probability of a chain reaction due to thermal runaway in the battery, and improving the safety of the battery.

[0059] In some embodiments, a battery cell includes multiple protrusions, and the multiple protrusions are located in the same receiving portion. This helps reduce the number of bosses, thereby reducing the number of manufacturing steps for the bosses, lowering production costs, and reducing the difficulty of fitting the bosses into the receiving portion during battery assembly, thereby improving manufacturing efficiency.

[0060] In some embodiments, the protrusions of multiple battery cells are located in the same receiving portion. This helps further reduce the number of bosses, lowering production costs, reducing the difficulty of matching the bosses with the receiving portion during battery assembly, and improving manufacturing efficiency. It also facilitates the placement of components such as sampling members and current collectors in the same receiving portion to electrically connect the battery cells and obtain various types of information from each battery cell.

[0061] In some embodiments, a battery cell includes multiple protrusions, the first box wall includes multiple receiving portions, and each protrusion in a single battery cell is located in a different receiving portion. In this way, the battery cells in the same group are electrically connected through the same receiving portion.

[0062] In some embodiments, multiple battery cells are arranged along a first direction, and one battery cell includes multiple protrusions, with at least some of the protrusions 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 that are close to each other along the first direction are located in the same receiving portion. This reduces the probability of short circuits caused by electrical connection between components such as terminals located on the protrusions due to accidental contact, thereby improving battery safety.

[0063] In some embodiments, the battery assembly further includes a sampling member, at least a portion of which is accommodated in the accommodating portion. This facilitates the shape of the accommodating cavity to better adapt to the shape of the battery cell housing. Given a given volume of the accommodating cavity, the volume of the housing can be increased, thereby increasing the energy density of the battery.

[0064] And / or, the battery assembly further includes a battery management system, and at least a portion of the battery management system is accommodated in the accommodating portion. This facilitates the shape of the accommodating portion to better adapt to the outer contour of the battery management system, thereby reducing the layout requirements of the battery management system, and facilitating the reduction of the overall size and volume of the accommodating box, thereby improving the space utilization within the accommodating box.

[0065] And / or, the battery assembly further includes a relay, and at least a portion of the relay is accommodated in the accommodating portion. This facilitates the shape of the accommodating portion to better adapt to the outer contour of the relay, thereby reducing the requirements for the arrangement of the relay; and facilitates reducing the overall size and volume of the accommodating box, thereby improving the space utilization within the accommodating box.

[0066] And / or, the battery assembly further includes a high-voltage power distribution unit, and at least a portion of the high-voltage power distribution unit is accommodated in the accommodating portion. This facilitates the shape of the accommodating portion to better adapt to the outer contour of the high-voltage power distribution unit, thereby reducing the requirements for the arrangement of the high-voltage power distribution unit; and facilitates reducing the overall size and volume of the accommodating box, thereby improving the space utilization rate within the accommodating box.

[0067] And / or, the battery assembly also includes high and low voltage wiring harnesses, and at least part of the high and low voltage wiring harnesses are accommodated in the accommodating portion. This helps to make the shape of the accommodating portion better adapt to the routing arrangement of the high and low voltage wiring harnesses, reduce the risk of the high and low voltage wiring harnesses being damaged by bending or squeezing, and help to reduce the overall size and volume of the accommodating box, thereby improving the space utilization rate within the accommodating box.

[0068] In some embodiments, the accommodating portion includes a first accommodating sub-portion and a second accommodating sub-portion, a portion of the protruding portion is accommodated in the space of the first accommodating sub-portion, and another portion of the protruding portion is accommodated in the space of the second accommodating sub-portion. In this way, the shape of the first accommodating sub-portion and the shape of the second accommodating sub-portion can be adapted to each other according to the actual outer contour shape of the protruding portion. This is conducive to reducing the outer contour size and total volume of the accommodating portion, so that the structure of the battery is more compact, the overall volume of the battery is reduced, and the energy density of the battery is improved.

[0069] In some embodiments, the outer surface of the first wall is raised to form a boss, and the boss is located on the side of the receiving portion facing away from the receiving cavity. This helps ensure that the thickness of the area with the boss is consistent with that of the rest of the first wall, which helps to reduce the overall size of the first wall, thereby reducing the three-dimensional dimensions of the receiving box and the overall volume of the battery, thereby improving the battery's energy density and space utilization.

[0070] In some embodiments, the length direction of the boss is the same as the length direction of the accommodating cavity, and the two have the same size along the length direction. This helps to maximize the size of the accommodating portion along the length direction of the battery, thereby facilitating the size and volume of the accommodating portion to accommodate various protrusions of different sizes and shapes.

[0071] 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. This is beneficial for increasing the size of the accommodating portion along the width direction of the battery as much as possible, thereby facilitating the size and volume of the accommodating portion to adapt to various sizes and shapes of protruding parts.

[0072] In some embodiments, the width of the boss does not exceed 500 mm. This, on the one hand, helps to provide a larger flat area on the surface of the first box wall so as to adapt to other components in the electrical device and reduce the adverse effects of the boss on the arrangement of other components in the electrical device; on the other hand, it reduces the adverse effects of the boss's large width on its structural strength and reduces the probability of damage to components in the accommodating portion due to deformation of the boss.

[0073] And / or, the height of the boss does not exceed 300 mm, so that it is compatible with other components in the electrical device and reduces the adverse effects of the boss on the layout of other components in the electrical device; at the same time, it reduces the probability of the boss being deformed and bent due to shear stress perpendicular to the height direction, thereby damaging the protruding part in the accommodating portion.

[0074] In some embodiments, the width of the boss is in the range of 50 mm to 300 mm, so that the space in the receiving portion can meet the arrangement requirements of the protruding portion;

[0075] And / or, the height of the boss is in the range of 5 mm to 100 mm, so that the space in the accommodating portion can meet the arrangement requirements of the protruding portion.

[0076] In some embodiments, the battery assembly further includes a battery cell, the battery cell including a housing having a first wall, the first wall including a protrusion, at least a portion of the protrusion being located within the receiving portion, and the height of the protrusion not exceeding 77% of the height of the boss. This arrangement, on the one hand, facilitates spacing between the protrusion and the receiving portion along the height of the battery, thereby reducing the likelihood of damage from direct contact between the two and facilitating the arrangement of other components of the battery assembly within the receiving portion; on the other hand, the thickness of the boss allows for better protection of the protrusion.

[0077] In some embodiments, the height of the protrusion accounts for 36% to 53% of the height of the boss. This further ensures that the space in the accommodating portion is large enough to accommodate other components of the battery assembly, and further helps ensure that the boss has sufficient strength to protect the protrusion.

[0078] In some embodiments, the height of the protruding portion does not exceed 94% of the height of the boss, thereby reducing the probability of the protruding portion and the boss abutting in the vertical direction and reducing the probability of damage caused by the abutment.

[0079] In some embodiments, the height of the protruding portion accounts for 74% to 86% of the height of the boss, which further helps reduce the probability of the protruding portion and the boss abutting in the vertical direction and helps improve the space utilization of the accommodating portion by the protruding portion.

[0080] In some embodiments, part or all of the boss is detachable. Thus, by removing part or all of the boss, the battery components in the battery can be inspected and repaired through the formed channel without completely disassembling the box, thereby simplifying the operation steps.

[0081] In some embodiments, the first box wall includes a box wall body and a mounting plate. The box wall body is provided with a through hole extending therethrough, the through hole communicating with the accommodating cavity. The edge of the through hole is provided with a mounting step extending away from the accommodating cavity. The mounting plate is detachably mounted on the mounting step to cover the through hole. The mounting step and the mounting plate together form the boss. The inner wall of the through hole and the surface of the mounting plate facing the accommodating cavity enclose the accommodating portion. In this way, after the boss is removed, the battery assembly located in the through hole and the accommodating cavity can be inspected through the opening of the through hole.

[0082] In some embodiments, the battery includes a first adhesive layer adhered between the inner wall of the housing cavity and the battery assembly. The first adhesive layer adheres the inner wall of the housing cavity to the battery assembly, maintaining a fixed relative position between the battery assembly and the housing. Furthermore, forming the first adhesive layer by applying adhesive improves operational efficiency.

[0083] In some embodiments, the battery includes a first adhesive layer, the accommodating portion is located on the top side of the accommodating box in the height direction, the top wall of the battery cell in the height direction of the accommodating cavity is the first shell wall, and the first adhesive layer is adhered between the top inner wall of the accommodating cavity in the height direction and the first shell wall. In this way, the first adhesive layer can play a role in separation and sealing, preventing the accommodating portion and objects in the accommodating cavity from entering each other. At the same time, the advantage of the larger area of ​​the first shell wall can be utilized to apply as much adhesive as possible to form the first adhesive layer, thereby improving the adhesion and fixing effect;

[0084] And / or, the first adhesive layer is adhered between the bottom inner wall of the accommodating cavity along the height direction of the accommodating cavity and the bottom wall of the battery cell along the height direction of the accommodating cavity. This is beneficial for allowing unsolidified adhesive to avoid the poles, sampling components and busbar components during the adhesive coating process, thereby reducing the adverse effects of the adhesive on the normal operation of various components in the battery. At the same time, the gravity of the battery cell can be used to squeeze the adhesive so that the adhesive spreads more evenly.

[0085] In some embodiments, the battery includes a temperature control assembly interposed between the inner wall of the housing chamber and the battery assembly. This absorbs heat generated by the battery assembly during operation, lowering its operating temperature and improving battery safety. Furthermore, the temperature control assembly can radiate some of the heat directly to the outside world through the housing chamber walls, increasing the heat dissipation area and enhancing temperature control effectiveness.

[0086] In some embodiments, the temperature control assembly is located between the inner wall of the accommodating cavity and the first shell wall. This can better utilize the larger area of ​​the first shell wall to increase the contact area between the temperature control assembly and the battery cells, more effectively transferring heat generated during battery operation to the shell wall and radiating it to the outside world, thereby improving the temperature control effect.

[0087] In some embodiments, the temperature control component 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, so that the temperature control component will not be squeezed by the gravity of the battery assembly and affect the realization of the temperature control function;

[0088] And / or, the temperature control component 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, thereby reducing the probability of interference between the arrangement of the temperature control component and the protruding part.

[0089] In some embodiments, the battery includes a second adhesive layer adhered between the inner wall of the housing cavity and the outer surface of the temperature control assembly. This ensures that the relative position between the temperature control assembly and the housing box is fixed, reducing the probability of friction damage caused by relative movement between the two. At the same time, it facilitates the temperature control assembly to transfer heat directly to the housing box and radiate it to the outside world.

[0090] And / or, the battery includes a third adhesive layer, which is 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, reducing the probability of friction damage caused by relative movement between the two, and allowing heat to be better transferred between the temperature control assembly and the battery assembly, thereby improving the temperature control effect.

[0091] The disclosed embodiments further provide an electrical device, comprising any of the batteries described in the aforementioned embodiments, the battery serving as a power source for the electrical device. Thus, by providing a fit between the receiving portion and the protruding portion, the overall volume of the electrical device can be reduced, making the structure of the electrical device more compact.

[0092] The disclosed embodiments further provide an electrical device, comprising a vehicle comprising a seat and a battery according to any of the aforementioned embodiments, wherein the boss is located on the side of the storage box facing the seat. This facilitates increasing the volume of the battery within the vehicle, thereby increasing the battery capacity and the vehicle's range. Furthermore, the flat wall of the storage box is oriented toward the ground, making the bottom surface of the vehicle smoother, reducing the vehicle's drag coefficient and increasing the vehicle's ground clearance. This prevents the boss from increasing wind resistance or colliding with foreign objects on the road during driving, potentially damaging the battery.

[0093] In some embodiments, the vehicle includes a body member with an open bottom side. The battery is located in the open portion of the body member to form a passenger space with the body member, and the seat is located in the passenger space. This facilitates increasing the volume of the battery within the vehicle's limited three-dimensional dimensions and improves space utilization within the passenger space.

[0094] In some embodiments, the vehicle includes a chassis, the body is mounted on the chassis, the chassis includes the battery, and the first box wall forms the floor of the passenger space. Thus, the battery improves the overall structural strength of the chassis, and the first box wall serves as the floor of the passenger space, thereby improving the utilization of the vehicle interior space and enhancing the structural strength of the entire passenger space structure, thereby improving vehicle safety.

[0095] In some embodiments, the projection of the boss partially or entirely lies within the projection of the seat, as projected perpendicular to the vertical direction. This allows the boss to utilize the space beneath the seat, reducing the likelihood of passengers colliding with the boss while seated. This reduces the impact of the boss on the passenger's normal mobility space, improves the user experience, and increases space utilization within the vehicle.

[0096] In some embodiments, the number of the seats is multiple and they are spaced apart to form at least one row, and the seats in the same row are spaced apart to form a first gap along the width direction of the vehicle, and the boss includes a first boss, and part or all of the first boss is located in the first gap.

[0097] In this way, the boss can utilize the space in the first gap, which increases the battery volume while reducing the chance of passengers coming into contact with the boss during riding, reduces the interference of the boss on the normal activities of the passengers, and improves the space utilization rate in the vehicle.

[0098] In some embodiments, the plurality of seats are arranged in at least two rows spaced apart along the length of the vehicle, and the first boss extends along the length of the vehicle to below another adjacent row of seats. Thus, on the one hand, the first boss extends along the length of the vehicle. Given a constant projection area of ​​the first boss perpendicular to the vertical direction, this helps reduce the size of the first boss along the width of the vehicle, thereby reducing interference with multiple passengers within the vehicle. This improves the user experience, reduces the likelihood of interference with passenger seating and activities, and helps improve battery utilization within the vehicle's interior space, thereby increasing battery capacity. Furthermore, the first boss can utilize more of the space within the first gap, further improving space utilization within the vehicle.

[0099] In some embodiments, the boss includes a second boss, with two second bosses extending along the length of the vehicle and located on one side of the seat along the width of the vehicle. This can reduce interference with the leg and foot movements of the occupant by the second bosses, thereby improving the occupant's user experience.

[0100] In some embodiments, the number of the second bosses is two, and the two second bosses are respectively located at one end of the battery along the width direction of the vehicle, and the seat is located between the two second bosses. This is beneficial to increase the space for the occupants' legs and feet to move, further reduce the interference of the second bosses on the occupants' legs and feet movements, and effectively utilize the space along the width edge of the vehicle.

[0101] In some embodiments, the second boss is spaced apart from the seat along the width direction of the vehicle, which is beneficial to increasing the space for the legs and feet of the occupant and improving the user's riding experience;

[0102] And / or, part of the second boss is located below the seat, which is beneficial to reducing the size of the battery and the vehicle along the width direction, making the structure of the battery and the vehicle more compact.

[0103] In some embodiments, the bosses include one or more third bosses extending along the width of the vehicle, with at least a portion of the third bosses located below seats in the same row. This allows the third bosses to fully utilize the space below the seats along the width of the vehicle while also minimizing their encroachment on the space between adjacent rows of seats, reducing interference with passenger movement and enhancing the passenger experience.

[0104] In some embodiments, the seat includes a seat bottom, wherein at least a portion of the seat bottom is spaced apart from the battery in a height direction of the vehicle to form a second gap, and the boss is at least partially located in the second gap and is vertically spaced apart from the seat bottom. This reduces the likelihood of the boss being damaged by pressure from a passenger due to direct contact between the boss and the seat bottom.

[0105] In some embodiments, the seat includes legs, and the seat and the battery are vertically spaced apart to form a second gap, with the legs connected between the seat and the battery. This facilitates spacing between the seat and the boss, resulting in a regular seat shape and ease of placement. This also facilitates heat release during battery operation, facilitates inspection, disassembly, and maintenance through the second gap, and allows passengers to easily insert their feet into the second gap, allowing them to relax and improve comfort.

[0106] In some embodiments, the plurality of legs are spaced apart along the width of the vehicle, and the boss is partially or entirely located between two adjacent legs along the width of the vehicle. This facilitates the placement of the boss and utilizes the space between the legs, thereby improving the battery's utilization of the vehicle's interior space and increasing battery capacity.

[0107] In some embodiments, the seat includes a cushion pad, and the boss is embedded in the cushion pad to support the seat along the height direction of the vehicle. This helps to simplify the seat structure, improve the utilization of the seat interior space, and reduce production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0108] FIG1 is a schematic diagram of a vehicle according to an embodiment of the present disclosure;

[0109] FIG2 is a schematic diagram of a battery in the first embodiment of the present disclosure;

[0110] FIG3 is a schematic cross-sectional view of the embodiment in FIG2 ;

[0111] FIG4 is an enlarged schematic diagram of position A in FIG3 ;

[0112] FIG5 is a partially cutaway enlarged schematic diagram of a battery in a second embodiment of the present disclosure, wherein the cutaway enlarged position is the same as position A in FIG3 ;

[0113] FIG6 is a schematic diagram of a battery in a third embodiment of the present disclosure;

[0114] FIG7 is a schematic cross-sectional view of the embodiment of FIG6 at the BB position;

[0115] FIG8 is an enlarged schematic diagram of position C in FIG7 ;

[0116] FIG9 is a partially cutaway enlarged schematic diagram of a battery in a fourth embodiment of the present disclosure, wherein the cutaway enlarged position is the same as position C in FIG6 ;

[0117] FIG10 is an exploded schematic diagram of the embodiment in FIG5 ;

[0118] FIG11 is a schematic diagram of a battery cell in a fifth embodiment of the present disclosure;

[0119] FIG12 is an exploded schematic diagram of the embodiment in FIG11 ;

[0120] FIG13 is a partial cross-sectional schematic diagram of the embodiment in FIG11 ;

[0121] FIG14 is a schematic diagram of a battery cell in a sixth embodiment of the present disclosure;

[0122] FIG15 is an exploded schematic diagram of the embodiment in FIG14 ;

[0123] FIG16 is a partial cross-sectional schematic diagram of the embodiment in FIG14 ;

[0124] FIG17 is a schematic diagram of a battery cell in a seventh embodiment of the present disclosure;

[0125] FIG18 is a schematic diagram of a battery cell in an eighth embodiment of the present disclosure;

[0126] FIG19 is a schematic diagram of a battery cell in a ninth embodiment of the present disclosure;

[0127] FIG20 is a schematic diagram of the positions of the first center plane, the second center plane, the third center plane, and the fourth center plane in one embodiment of the present disclosure;

[0128] FIG21 is a schematic diagram showing the relationship between the protrusion and the total height of the battery cell in one embodiment of the present disclosure;

[0129] FIG22 is a schematic diagram of a battery cell in the tenth embodiment of the present disclosure;

[0130] FIG23 is a schematic diagram of a battery cell in the eleventh embodiment of the present disclosure;

[0131] FIG24 is a schematic diagram of a battery cell in the twelfth embodiment of the present disclosure;

[0132] FIG25 is a schematic diagram of a battery cell in the thirteenth embodiment of the present disclosure;

[0133] FIG26 is a schematic diagram of a battery in a fourteenth embodiment of the present disclosure;

[0134] FIG27 is a schematic cross-sectional view of the embodiment in FIG26 ;

[0135] FIG28 is an exploded view of the embodiment in FIG26 ;

[0136] FIG29 is a schematic diagram of a battery in a fifteenth embodiment of the present disclosure;

[0137] FIG30 is a schematic cross-sectional view of the embodiment in FIG29 at DD;

[0138] FIG31 is an enlarged schematic diagram of position E in FIG30 ;

[0139] FIG32 is a partially cutaway enlarged schematic diagram of a battery in the sixteenth embodiment of the present disclosure, the cutaway enlarged position being the same as position E in FIG30 ;

[0140] FIG33 is an exploded view of the embodiment in FIG29 ;

[0141] FIG34 is a schematic diagram of a battery in a seventeenth embodiment of the present disclosure;

[0142] FIG35 is a schematic cross-sectional view of the embodiment in FIG34 ;

[0143] FIG36 is an exploded schematic diagram of the embodiment in FIG34 ;

[0144] FIG37 is a schematic diagram of a battery in an eighteenth embodiment of the present disclosure;

[0145] FIG38 is an exploded view of the embodiment in FIG37 ;

[0146] FIG39 is a schematic diagram of a battery in a nineteenth embodiment of the present disclosure;

[0147] FIG40 is an exploded view of the embodiment in FIG39 ;

[0148] FIG41 is a schematic diagram of a battery in the twentieth embodiment of the present disclosure;

[0149] FIG42 is a schematic cross-sectional view of the embodiment in FIG41 ;

[0150] FIG43 is an exploded view of the embodiment in FIG41 ;

[0151] FIG44 is a schematic diagram of a battery in the twenty-first embodiment of the present disclosure;

[0152] FIG45 is a cross-sectional view of the embodiment in FIG44 at position FF;

[0153] FIG46 is a partial enlarged schematic diagram of position G in FIG45 ;

[0154] FIG47 is an exploded view of the embodiment in FIG44 ;

[0155] FIG48 is a schematic diagram of a battery in the twenty-second embodiment of the present disclosure;

[0156] FIG49 is a schematic cross-sectional view of the embodiment in FIG48;

[0157] FIG50 is an exploded view of the embodiment in FIG48;

[0158] FIG51 is a schematic diagram of a battery in the twenty-third embodiment of the present disclosure;

[0159] FIG52 is a schematic cross-sectional view of the embodiment in FIG51 at position HH;

[0160] FIG53 is a partial enlarged schematic diagram of position I in FIG51;

[0161] FIG54 is an exploded view of the embodiment in FIG51 ;

[0162] FIG55 is an exploded view of a battery in the twenty-fourth embodiment of the present disclosure;

[0163] FIG56 is an exploded view of a battery in the twenty-fifth embodiment of the present disclosure;

[0164] FIG57 is a schematic diagram of a battery in the twenty-sixth embodiment of the present disclosure;

[0165] FIG58 is a schematic cross-sectional view of the embodiment in FIG57 at position JJ;

[0166] FIG59 is a schematic diagram of the arrangement of batteries and seats in the twenty-seventh embodiment of the present disclosure from a first viewing angle;

[0167] FIG60 is a schematic diagram of the arrangement of the embodiment in FIG59 at a second viewing angle;

[0168] FIG61 is a schematic diagram of the arrangement of the embodiment in FIG59 at a third viewing angle;

[0169] FIG62 is a schematic diagram of the arrangement of batteries and seats in the twenty-eighth embodiment of the present disclosure from a first viewing angle;

[0170] FIG63 is a schematic diagram of the embodiment in FIG62 from another perspective;

[0171] FIG64 is a schematic diagram of the arrangement of batteries and seats in the twenty-ninth embodiment of the present disclosure;

[0172] FIG65 is a schematic diagram of the arrangement of batteries and seats in the 30th embodiment of the present disclosure from a fourth viewing angle;

[0173] FIG66 is a schematic diagram of the arrangement of the embodiment in FIG65 at a fifth viewing angle;

[0174] FIG67 is a schematic diagram of the arrangement of the embodiment in FIG65 at a sixth viewing angle;

[0175] FIG68 is a schematic diagram of the arrangement of batteries and seats in the thirty-first embodiment of the present disclosure at a seventh viewing angle;

[0176] FIG69 is a schematic diagram of the arrangement of the embodiment in FIG68 at an eighth viewing angle;

[0177] FIG70 is a schematic diagram of the arrangement of the embodiment in FIG68 at a ninth viewing angle;

[0178] Figure 71 shows the arrangement relationship between the body parts, seats and batteries in one embodiment of the present disclosure.

[0179] Explanation of reference numerals 100, vehicle; 100a, passenger space; 10, battery; 11, storage box; 111a, storage cavity; 111b, storage portion; 111c, first storage sub-portion; 111d, second storage sub-portion; 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, protrusion; 121, battery cell; 1211, shell; 1211a, cover plate; 1211b, shell body; 1212, first shell wall; 1212a, avoidance groove; 1212b, first center plane; 1212c , second center plane; 1213, pole; 1214, protrusion; 1214a, third center plane; 1214b, fourth center plane; 1215, electrode assembly; 1216, main body; 1217, pole ear; 1218, explosion-proof valve; 1219, adapter; 122, busbar; 123, sampling component; 124, battery management system; 125, relay; 126, high-voltage distribution unit; 127, high and low voltage wiring 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; 211, cushion; 22, seat back; 23, support leg; 30, controller; 40, motor; 50, body part; 60, chassis. DETAILED DESCRIPTION

[0180] It should be noted that, unless there is a conflict, the embodiments and technical features in the embodiments of the present disclosure can be combined with each other, and the detailed description in the specific implementation methods should be understood as an explanation of the purpose of the present disclosure and should not be regarded as an improper limitation on the present disclosure.

[0181] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which the present disclosure belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure; the terms "including" and "having" and any variations thereof in the specification of the present disclosure and the above-mentioned drawings are intended to cover non-exclusive inclusions.

[0182] Currently, new energy batteries are increasingly being used in daily life and industry. They are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but are also widely used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in aerospace and other fields.

[0183] FIG1 is a schematic structural diagram of a vehicle 100 provided in an embodiment of the present disclosure. The vehicle 100 may be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. As shown in FIG17 , a battery 10 is provided inside the vehicle 100. The battery 10 may be provided at the bottom, head or tail of the vehicle 100. The battery 10 may be used to power the vehicle 100. For example, the battery 10 may serve as an operating power source for the vehicle 100. The vehicle 100 may further include a controller 30 and a motor 40. The controller 30 is used to control the battery 10 to power the motor 40, for example, for starting, navigating and operating power requirements of the vehicle 100 during driving.

[0184] In some embodiments of the present disclosure, the battery 10 can serve not only as an operating power source for the vehicle 100 , but also as a driving power source for the vehicle 100 , replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 100 .

[0185] In the embodiments of the present disclosure, the battery may be a battery cell. A battery cell refers to a basic unit that can realize the mutual conversion of chemical energy and electrical energy, and can be used to make a battery module or battery pack, thereby being used to supply power to an electrical device. The battery cell may be a secondary battery, which refers to a battery cell that can be recharged to activate the active material after the battery cell is discharged and continue to be used. The battery cell may 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-metal hydride battery, a nickel-cadmium battery, a lead-acid battery, etc., and the embodiments of the present disclosure are not limited to this.

[0186] A battery cell typically includes an electrode assembly. This assembly includes a positive electrode, a negative electrode, and a separator. During the charge and discharge process of a battery cell, active ions (such as lithium ions) are inserted and removed between the positive and negative electrodes. The separator, placed between the positive and negative electrodes, prevents short circuits between the positive and negative electrodes while allowing the active ions to pass through.

[0187] In some embodiments, the battery cell further includes an electrolyte, which acts as a conductor of ions between the positive and negative electrodes. The present disclosure does not specifically limit the type of electrolyte, and the electrolyte may be selected based on needs. The electrolyte may be liquid, gel, or solid.

[0188] In some embodiments, a battery cell may include a housing. The housing is used to encapsulate components such as the electrode assembly and the electrolyte. The housing may be a steel shell, an aluminum shell, a plastic shell (such as polypropylene), a composite metal shell (such as a copper-aluminum composite shell), or an aluminum-plastic film.

[0189] As an example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell or a battery cell of other shapes. The prismatic battery cell includes a square-shell battery cell, a blade-shaped battery cell, a polygonal battery, such as a hexagonal battery, etc. There is no special limitation in the present disclosure.

[0190] In the embodiments of the present disclosure, the battery may also be a single physical module (e.g., a battery module or battery) including 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 hybrid via a busbar.

[0191] In the description of the embodiments of the present disclosure, technical terms such as "first," "second," and "third" are used solely to distinguish different objects and should not be understood to indicate or imply relative importance or to implicitly specify the quantity, specific order, or primary and secondary relationship of the technical features indicated. In the description of the embodiments of the present disclosure, "plurality" means more than two, unless otherwise specifically defined.

[0192] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present disclosure. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0193] In the description of the embodiments of the present disclosure, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0194] In the description of the embodiments of the present disclosure, for ease of explanation, as indicated by the arrows in Figures 2, 3, 6, 59, 60, and 61, the direction of arrow X is the "battery height direction" and the "vehicle height direction", the direction of x1 is the "top", the direction of x2 is the "bottom", the direction of arrow Y is the "battery length direction" and the "vehicle length direction", and the direction of arrow Z is the "battery width direction" and the "vehicle width direction". As indicated by the arrows in Figures 11, 17, 18, 19, and 20, the direction of arrow a is the "battery cell length direction" and the "first housing wall length direction", the direction of arrow b is the "battery cell width direction" and the "first housing wall width direction", and the direction of arrow c is the "battery cell height direction".

[0195] In the description of the embodiments of the present disclosure, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and can refer to internal connectivity between two components or interaction between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present disclosure based on specific circumstances.

[0196] In the description of the embodiments of the present disclosure, unless otherwise clearly specified and limited, the technical term "contact" should be understood in a broad sense, and can be direct contact, contact through an intermediate medium layer, contact with essentially no interaction force between the two contacting parties, or contact with interaction force between the two contacting parties.

[0197] The following describes the embodiments of the present disclosure in detail.

[0198] The battery includes different components such as a container box, battery cells, a busbar, a sampling component, and a battery management system. Different types of components are placed in the container box, which provides installation locations for different types of components and protects and seals each component, thereby facilitating the battery's charging and discharging functions under different working environments.

[0199] The sizes, shapes, and quantities of various components within the container often vary, yet the space within the container is relatively regular for ease of manufacturing. Consequently, the various components cannot be arranged in a regular pattern within the container, resulting in wasted container volume and hindering the compactness of the battery's internal structure and improving its energy density.

[0200] The embodiment of the present disclosure aims to provide a battery, in which a accommodating portion is provided in a accommodating box, and the accommodating portion is connected to the accommodating cavity, so that some components in the accommodating box can be placed in the accommodating portion, so that the spatial shape in the accommodating box can better adapt to the arrangement of various types of components in the accommodating box, thereby facilitating the reduction of the three-dimensional size of the accommodating box and improving space utilization.

[0201] Specifically, an embodiment of the present disclosure provides a battery 10 . Referring to FIG. 2 to FIG. 9 , the battery 10 includes a container 11 and a battery assembly 12 .

[0202] The storage box 11 is provided with a storage cavity 111a, and the storage box 11 includes a first box wall 111;

[0203] The battery assembly 12 is accommodated in the accommodation cavity 111 a , and the battery assembly 12 includes a protruding portion 12 a ;

[0204] The first box wall 111 is provided with a receiving portion 111 b , in which at least a portion of the protruding portion 12 a is received.

[0205] The containing box 11, i.e., the box body forming the outer contour of the battery 10, is used to accommodate other components of the battery 10 except the containing box 11, thereby providing installation and fixing space for other components. At the same time, it plays a role of sealing and protection, reducing the adverse effects of collisions with external objects and entry of foreign matter on the normal operation of the battery 10 during transportation and use of the battery 10.

[0206] The box wall refers to the structure extending from the walls of the container box 11 that enclose the accommodating cavity 111a and extend away from the accommodating cavity 111a to the outer surface of the container box 11. In other words, of the two opposing surfaces of the box wall, one forms the inner wall of the accommodating cavity 111a, and the other forms the outer surface of the accommodating cavity 111a.

[0207] The first box wall 111 is a box wall of the receiving box 11 .

[0208] The battery assembly 12 is a variety of components in the battery 10 used to realize the charging and discharging functions of the battery 10.

[0209] The battery assembly 12 is located in the housing box 11 so that the housing box 11 can protect and seal the battery assembly 12 , allowing the battery assembly 12 to perform charge and discharge functions normally.

[0210] The protruding portion 12a refers to a portion of the outer contour surface formed by the battery assembly 12 that protrudes from other adjacent portions thereof. The protruding portion 12a may be one or more components of the battery assembly 12, or may be a partial structure of a component of the battery assembly 12.

[0211] The accommodating portion 111b, that is, the space formed on the surface of the first box wall 111 facing the accommodating cavity 111a, is connected to the space of the accommodating cavity 111a on at least one side facing the accommodating cavity 111a, so that part or all of the protruding portion 12a can extend into the space of the accommodating cavity 111b through the open position of the accommodating portion 111b.

[0212] The specific structural form of the accommodation portion 111b is not limited, for example, it can be an accommodation groove.

[0213] The battery 10 in the embodiment of the present disclosure, by providing a receiving portion 111b on the first box wall 111, is, on the one hand, conducive to making the spatial shape within the receiving box 11 better adaptable to the outer contour shape formed by the battery assembly 12, which is conducive to reducing the requirements for the layout of each component in the battery assembly 12; on the other hand, it is conducive to reducing the overall size and volume of the receiving box 11, improving the space utilization rate within the receiving box 11, reducing the overall volume of the battery 10, and improving the energy density of the battery 10.

[0214] In some embodiments, referring to FIG. 2 to FIG. 9 , along the thickness direction of the first box wall 111 , a portion of the projection of the battery assembly 12 is located outside the projection of the accommodating portion 111 b .

[0215] The thickness direction of the first box wall 111 is the direction from the first box wall 111 away from the accommodating cavity 111 a to the outer surface of the accommodating box 11 .

[0216] A portion of the projection of the battery assembly 12 is located outside the projection of the accommodating portion 111 b , that is, a portion of the battery assembly 12 is located in the accommodating cavity 111 a , and another portion is located in the accommodating portion 111 b .

[0217] In this way, the battery assembly 12 can more fully utilize the space in the accommodating cavity 111 a, thereby improving the space utilization of the battery 10 and facilitating increasing the capacity of the battery 10 .

[0218] It is understandable that the specific number of the first box walls 111 provided in the receiving box 11 is not limited, and can be one or more.

[0219] The number of the accommodating portions 111 b on the first box wall 111 is not limited, and may be one or more.

[0220] In some embodiments, referring to FIG. 2 to FIG. 9 , the battery assembly 12 further includes a plurality of battery cells 121 . The battery cells 121 include a housing 1211 having a first housing wall 1212 . The protruding portion 12 a is disposed on the first housing wall 1212 .

[0221] The housing 1211 is used to enclose a space for accommodating components related to the electrochemical reaction in the battery cell 121 .

[0222] The shell wall refers to the structure between the various wall surfaces that enclose the space inside the shell 1211 and extend from the outer surface of the shell 1211 in the direction away from the enclosed space.

[0223] The protruding portion 12a is provided on the first shell wall 1212, which means that the protruding portion 12a can be a part of the outer surface of the first shell wall 1212 protruding from the other parts 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 mentioned later; it can be other components of the protruding portion battery assembly 12 other than the battery cell 121, such as the busbar 122 and the sampling component 123 mentioned later, part or all of these components are located in the formation of the protruding portion 12a and are provided on the first shell wall 1212; it can also be a combination of the above two situations, for example, the protruding portion 12a includes the protrusion 1214 mentioned above, the pole 1213 set on the protrusion 1214 mentioned later, and the busbar 122 electrically connected to the pole 1213, etc.

[0224] In this way, a portion of the first shell wall 1212 can enter the accommodating portion 111b, which is beneficial to increasing the volume of the battery cell 121, and is beneficial to making the space inside the accommodating box 11 adapt to battery cells 121 with different outer contour shapes, and is beneficial to arranging battery cells 121 with different outer contour shapes more compactly in the accommodating box 11, which is beneficial to improving the energy density of the battery 10.

[0225] In some embodiments, referring to Figures 7, 8, 9, 10, 31, 33, 46, 47, 53 and 54, the battery assembly 12 also includes a bus 122, and the battery cell 121 also includes a pole 1213, the pole 1213 is arranged on the first shell wall 1212, the bus 122 electrically connects the poles 1213 of the two battery cells 121, the protruding portion 12a includes the bus 122, and at least a portion of the bus 122 is accommodated in the accommodating portion 111b.

[0226] The busbar 122 is used to electrically connect the plurality of battery cells 121 so as to realize series or parallel connection between the battery cells 121 .

[0227] The pole 1213 is provided on the housing 1211 and is used to electrically connect to the components that realize electrochemical reactions in the battery cell 121 so as to output or input electric energy into or into the battery cell 121 through the pole 1213 .

[0228] At least a portion of the current busbar 122 is accommodated in the accommodation portion 111 b , that is, a portion or the entirety of the current busbar 122 is located in the accommodation portion 111 b .

[0229] In this way, the spatial shape inside the accommodating box 11 is helped to better adapt to the arrangement relationship between the manifold 122 and the battery cell 121, so that the shape of the accommodating cavity 111a can adapt to the shape of the battery cell 121, which is helped to reduce the gap between the inner wall of the accommodating cavity 111a and the battery cell 121, thereby improving the space utilization rate of the battery 10.

[0230] It should be noted that the specific structure of the busbar 122 and the manner of realizing series and parallel connection between the battery cells 121 have been applied in the relevant technology and will not be described in detail here.

[0231] It is understandable that, referring to FIG9 , 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 FIG8 , the pole 1213 protrudes from the outer surface of the first shell wall 1212 .

[0232] It is understandable that the size of the housing 1211 has a direct impact on the components that implement the electrochemical reaction within the battery cell 121 , thereby affecting the energy density of the battery cell 121 .

[0233] In some embodiments, referring to FIG. 7 , FIG. 8 , FIG. 31 , FIG. 33 , FIG. 53 , and FIG. 54 , at least a portion of the pole 1213 is received in the receiving portion 111 b .

[0234] That is, the protruding portion 12a includes at least a portion of the terminal 1213, and at least a portion of each of the terminal 1213 and the current bus 122 is located within the accommodating portion 111b. This allows the current bus 122, which is connected to the terminal 1213, to be more rationally arranged within the accommodating portion 111b, thereby improving the space utilization within the accommodating cavity 111a and, in turn, increasing the capacity of the battery 10.

[0235] In some embodiments, the pole 1213 and the busbar 122 are both located in the accommodating portion 111 b , while part or all of the housing 1211 is located in the accommodating cavity 111 a .

[0236] In some embodiments, referring to FIG. 4 , FIG. 5 , FIG. 31 and FIG. 32 , the poles 1213 of at least two battery cells 121 are located in the same receiving portion 111 b .

[0237] In this way, it is beneficial to electrically connect the poles 1213 of different battery cells 121 in one accommodating portion 111 b through the busbar 122 , which helps to make the structure of the battery 10 more compact.

[0238] The busbar 122 is conductive to achieve electrical connection with the pole 1213. During use or transportation of the battery 10, the battery assembly 12 may move relative to the container 11, causing the busbar 122 to contact the inner wall of the container 111b, which may damage the busbar 122.

[0239] In some embodiments, referring to FIG. 46 , the distance between the inner wall of the accommodating portion 111 b and the current collector along a first direction is no less than 1% of the dimension of the accommodating portion 111 b along the first direction, where the first direction is perpendicular to the thickness of the first box wall. That is, L10 ≥ 0.01·L11.

[0240] This helps reduce the probability of the current collector 122 contacting the inner wall of the receiving portion 111 b , allowing the battery assembly 12 to function normally.

[0241] The first direction may 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.

[0242] In some embodiments, the ratio of the distance between the inner wall of the receiving portion and the current collector along the first direction to the size of the receiving portion along the first direction is in a range of 2% to 10%. That is, 0.1·L11≥L10≥0.02·L11.

[0243] This further helps reduce the probability of the current collector 122 contacting the inner wall of the accommodating portion 111 b.

[0244] In some embodiments, referring to FIG. 9 , the battery 10 includes an insulating member 17 , which is disposed on the inner wall of the receiving portion 111 b .

[0245] In this way, the insulating properties of the insulating member 17 can be utilized to reduce the risk of contact between the battery assembly 12 and the inner wall of the accommodating portion 111b, thereby reducing the risk of charge being transferred between the battery assembly 12 and the accommodating box 11 and other problems such as short circuits occurring in the battery 10 during use.

[0246] The specific material of the insulating member 17 is not limited, such as rubber.

[0247] In some embodiments, referring to FIG. 9 , the battery assembly 12 includes a battery cell 121 , each of which includes a terminal 1213 , and the insulating member 17 is disposed opposite to the terminal 1213 .

[0248] In this way, the probability of the pole 1213 contacting the container 11 due to relative movement between the battery assembly 12 and the container 111 b can be reduced, thereby reducing the risk of the battery cell 121 short-circuiting due to the contact between the pole 1213 and the container 11.

[0249] In some embodiments, referring to Figures 7, 8, 31, 33, 46, 53, and 54, first wall 1212 includes a protrusion 1214, protruding portion 12a includes protrusion 1214, and at least a portion of protrusion 1214 is accommodated in accommodation portion 111b. In other words, part or all of protrusion 1214, i.e., a portion of first wall 1212, is located in accommodation portion 111b.

[0250] Providing the protrusion 1214 is beneficial for increasing the space inside the battery cell 121 , increasing the volume inside the battery cell 121 for accommodating components for electrochemical reactions, and increasing the energy density of the battery cell 121 .

[0251] In this way, by positioning the protrusion 1214 in the accommodating portion 111b, the distance between the other parts of the first shell wall 1212 and the inner wall of the accommodating cavity 111a is reduced, which helps to reduce the volume of the accommodating cavity 111a, thereby helping to reduce the three-dimensional dimensions of the accommodating box 11, reduce the overall volume of the battery 10, and facilitate improving the energy density and space utilization of the battery 10.

[0252] In some embodiments, the protrusion 1214 forms a protruding portion 12 a alone, that is, the protruding portion 12 a protrudes from the main body of the first shell wall.

[0253] In some embodiments, referring to FIG11 to FIG16 and FIG31 , a post 1213 is provided on the protrusion 1214 . In other words, the post 1213 is passed through the protrusion 1214 .

[0254] This is beneficial to improving the space utilization within the protrusion 1214, reducing the redundant volume within the shell 1211, making the space within the battery cell 121 more compact, thereby helping to reduce the total volume and outer contour dimensions of the battery cell 121, and further helping to increase the number of battery cells 121 that can be accommodated in the battery 10, thereby improving the energy density and space utilization of the battery 10.

[0255] In some embodiments, referring to FIG. 14 to FIG. 16 , there are two poles 1213 with opposite polarities, and the two poles 1213 are disposed on the same protrusion 1214 .

[0256] One pole 1213 serves as the positive electrode of the battery cell 121 , and one pole 1213 serves as the negative electrode of the battery cell 121 .

[0257] In this way, it is advantageous to only need to manufacture one protrusion 1214 to provide a mounting position for the two poles 1213 , which is advantageous to reduce the manufacturing steps of the first shell wall 1212 and lower the production cost.

[0258] In some embodiments, referring to FIG. 11 to FIG. 13 , there are two poles 1213 with opposite polarities, and the two poles 1213 are respectively disposed on the two protrusions 1214 .

[0259] In this way, on the one hand, it is helpful to reduce the volume of a single protrusion 1214, making the structure more compact, which is helpful to reduce the volume of the battery 10; on the other hand, it is helpful to space the two poles 1213, reduce the risk of short circuit between the two poles 1213, and improve the safety of the battery cell 121.

[0260] It is understandable that the protrusion 1214 protrudes from the surface of the first shell wall 1212 . Therefore, the arrangement of the protrusion 1214 will affect the arrangement of other components in the battery 10 except the battery cell 121 .

[0261] In some embodiments, referring to FIG. 17 , two poles 1213 are spaced apart along the length direction of the first shell wall 1212 .

[0262] The length direction of the first casing wall 1212 refers to the direction in which the largest dimension of the three-dimensional dimensions of the outer contour of the first casing wall 1212 extends when the outer contour of the first casing wall 1212 is a rectangular parallelepiped.

[0263] In this way, the distance between the two protrusions 1214 is increased as much as possible, which is conducive to forming a larger flat area in the portion of the first shell wall 1212 between the two protrusions 1214. Further, when the internal volume of the battery 10 is constant, other components with larger outer contour dimensions in the battery 10 are conveniently arranged in this area, providing convenience for the arrangement of other components in the battery 10. At the same time, it is conducive to reducing the volume of the battery 10, improving the space utilization inside the battery 10, and making the volume of the battery 10 more compact.

[0264] In some embodiments, referring to FIG. 18 , two poles 1213 are spaced apart along the width direction of the first shell wall 1212 .

[0265] The width direction of the first shell wall 1212 refers to a direction perpendicular to the length direction in the three-dimensional dimension of the outer contour of the first shell wall 1212 when the outer contour of the first shell wall 1212 is a rectangular parallelepiped.

[0266] It is understandable that the dimension of the first shell wall 1212 along its width direction is smaller than its dimension along its length direction. The battery 10 has multiple battery cells 121, and the arrangement of the multiple battery cells 121 along the width direction is conducive to reducing the maximum dimension of the outer contour formed by the multiple battery cells 121.

[0267] In this way, the two poles 1213 are arranged along the width direction of the first shell wall 1212, which is beneficial to shortening the distance between the poles 1213 of different polarities between two adjacent battery cells 121, thereby facilitating the reduction of the size of the busbar 122 and further facilitating the reduction of the size of the battery 10.

[0268] In some embodiments, referring to Figures 11 to 16, the battery cell 121 also includes an electrode assembly 1215, which is accommodated in the shell 1211. A portion of the first shell wall 1212 is recessed to form an avoidance groove 1212a. The avoidance groove 1212a is located on the side of the protrusion 1214 close to the electrode assembly 1215, and a portion of the electrode assembly 1215 is located in the avoidance groove 1212a.

[0269] The shell 1211 provides an installation space for the electrode assembly 1215 and plays a protective role. At the same time, the shell 1211 is used for the movement of electrolyte to generate an electrochemical reaction between the electrolyte and the electrode assembly 1215.

[0270] An escape area is provided on the first shell wall 1212 . The escape area is recessed on one side toward the electrode assembly 1215 to form an escape groove 1212 a , and protrudes on the side away from the electrode assembly 1215 to form a protrusion 1214 . The protrusion 1214 is correspondingly provided with the escape groove 1212 a .

[0271] A portion of the electrode assembly 1215 is located in the avoidance groove 1212a, so that 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 while allowing as much of the electrode assembly 1215 as possible to extend into the avoidance groove 1212a, which is beneficial to reducing the redundant volume in the battery cell 121, making the space in the battery cell 121 more compact, thereby helping to reduce the total volume and outer contour dimensions of the battery cell 121, and further helping to increase the number of battery cells 121 that can be accommodated in the battery 10, thereby improving the energy density and space utilization of the battery 10.

[0272] It is understandable that the battery cell 121 is provided with at least a partial installation cavity for placing the electrode assembly 1215 , and the installation cavity is communicated with the avoidance groove 1212 a .

[0273] In some embodiments, referring to FIG. 11 to FIG. 16 , the electrode assembly 1215 includes a main body 1216 and a tab 1217 . The tab 1217 is disposed on a side edge of the main body 1216 and is electrically connected to the main body 1216 . At least a portion of the tab 1217 is located in the avoidance groove 1212 a .

[0274] The main body 1216, i.e., the bare cell, is formed by stacking or winding a plurality of electrode sheets. The tabs 1217 form the positive or negative electrode in the electrode assembly 1215.

[0275] By partially or completely positioning the tab 1217 in the avoidance groove 1212 a , it is beneficial to improve the space utilization rate of the space in the receiving box 11 .

[0276] It can be understood that the tab 1217 protrudes from one side surface of the main body 1216 .

[0277] In some embodiments, referring to Figures 29 to 31, at least part of the tab 1217 is located in the accommodating portion 111b. This is beneficial to improving the space utilization rate of the space inside the accommodating box 11 and making the shape of the portion of the battery cell 121 outside the accommodating portion 111b more regular.

[0278] In some embodiments with a pole 1213 , referring to FIG. 31 , the electrode assembly 1215 further includes a transition piece 1219 , through which the tab 1217 is electrically connected to the pole 1213 , and at least a portion of the transition piece 1219 is located in the accommodation portion 111 b .

[0279] The adapter 1219 is used to electrically connect the pole 1213 and the tab 1217 to meet the requirements of electrical connection between poles 1213 and tabs 1217 of different sizes.

[0280] In this way, part or all of the adapter piece 1219 is located in the receiving portion 111b, which can improve the space utilization rate of the receiving box 11 and help make the shape of the part of the battery cell 121 outside the receiving portion 111b more regular.

[0281] In some embodiments, a portion of the body 1216 is located in the avoidance groove 1212a.

[0282] In this way, when the total volume and shape of the battery cell 121 are constant, it is convenient to adapt to the shapes of the tabs 1217 and the main body 1216 of different shapes, thereby improving the space utilization rate in the avoidance groove 1212a.

[0283] In some embodiments, referring to FIG. 12 and FIG. 15 , the housing 1211 includes a cover plate 1211 a and a housing body 1211 b . The cover plate 1211 a covers the opening of the housing body 1211 b , and the protrusion 1214 is provided on the cover plate 1211 a .

[0284] The cover plate 1211a covers the opening of the shell body 1211b and is sealed to the shell body 1211b to encapsulate the electrode assembly 1215 and the electrolyte in the installation cavity to prevent the electrolyte from overflowing or prevent foreign matter from entering the installation cavity and contaminating the electrolyte, so that the electrochemical reaction of the battery cell 121 during the charging and discharging process proceeds normally.

[0285] The specific method of sealing the cover plate 1211a and the shell body 1211b is not limited, for example, welding.

[0286] In this way, by setting the protrusion 1214 on the cover plate 1211a, a part of the electrode assembly 1215 can directly enter or escape from the space of the protrusion 1214 during the installation and removal of the cover plate 1211a, thereby improving the installation and removal efficiency of the battery cell 121.

[0287] 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.

[0288] In some embodiments, the protrusion 1214 is disposed on the shell body 1211b.

[0289] In this way, during the assembly of the battery cell 121, a portion of the electrode assembly 1215 can be placed into the space of the protrusion 1214 first, and the protrusion 1214 can be used to stop the electrode assembly 1215, thereby reducing the probability of the electrode assembly 1215 moving and failing to function during the process of disassembling and assembling the cover plate 1211a.

[0290] In some embodiments, referring to Figures 119 to 13 , there are two protrusions 1214 on the first shell wall 1212. This allows each protrusion 1214 to be electrically connected to a pole 1213 and a pole piece of the same polarity, thereby reducing the probability of short circuits.

[0291] In some embodiments, referring to FIG. 17 , two protrusions 1214 are respectively located at one of the two opposite ends of the first shell wall 1212 .

[0292] In this way, it is beneficial to form a larger flat area in the portion of the first shell wall 1212 between the two protrusions 1214, and then when the internal volume of the battery 10 is certain, it is convenient to arrange other components with larger outer contour dimensions in the battery 10 in this area, which provides convenience for the arrangement of other components in the battery 10. At the same time, it is beneficial 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.

[0293] In some embodiments, referring to FIG. 18 and FIG. 19 , the distance between the protrusion 1214 and one end of the first shell wall 1212 in the longitudinal direction is greater than the distance between the protrusion 1214 and the other end of the first shell wall 1212 in the longitudinal direction.

[0294] That is, the first shell wall 1212 is divided into two areas along its length by the protrusion 1214, one of which is larger than the other. This allows for the placement of larger components within the battery 10 within the larger area, facilitating the placement of other components within the battery 10. This also helps reduce the volume of the battery 10, improving internal space utilization, and making the battery 10 more compact.

[0295] In some embodiments, referring to FIG. 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 .

[0296] In this way, the area of ​​the first shell wall 1212 located at the other end away from the protrusion 1214 along its length direction can be maximized, thereby facilitating the arrangement of other components with larger outer dimensions in the battery 10 in this area, providing convenience for the arrangement of other components in the battery 10, and at the same time, helping 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.

[0297] In some embodiments, referring to FIG. 14 and FIG. 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 .

[0298] That is, the first center plane 1212 b of the first shell wall 1212 along the length direction thereof coincides with the third center plane 1214 a of the protrusion 1214 along the length direction of the battery cell 121 .

[0299] The first center plane 1212 b refers to a reference plane that is perpendicular to the length direction of the first shell wall 1212 and is located at a half-size position of the first shell wall 1212 along the length direction.

[0300] The third center plane 1214a refers to a reference plane that is perpendicular to the length direction of the protrusion 1214 and is located at a half-size position of the protrusion 1214 along its length direction.

[0301] This helps to make the structure of the battery cells 121 symmetrical about the first center plane 1212 b, and facilitates adjustment of the placement directions of the multiple battery cells 121 when they are arranged in the battery 10 , thereby improving the adaptability of the battery cells 121 .

[0302] It should be noted that due to numerous factors in the manufacturing, assembly, and measurement processes, the first center plane 1212b along the length of the first shell wall 1212 and the third center plane 1214a of the protrusion 1214 along the length of the battery cell 121 may not coincide with the designed dimensions after the battery cell 121 is manufactured. Therefore, when measuring the coincidence of the first and third center planes 1212b, 1214a, a certain predetermined tolerance is considered. Specifically, if the distance between the first and third center planes 1212b, 1214a along the length of the first shell wall 1212 is within a predetermined tolerance, the two are considered to be coincident. The specific value of the predetermined tolerance depends on the design requirements.

[0303] In some embodiments, referring to FIG. 20 , the spacing between the center position of the first shell wall 1212 along its length direction and the center position of the protrusion 1214 along the length direction of the first shell wall 1212 is a first spacing, and the ratio of the first spacing to the length dimension of the first shell wall 1212 is greater than 0 and does not exceed 47.5%.

[0304] The length of the first shell wall 1212 is the dimension value of L1 in FIG20 , and the first spacing is the dimension value of L3 in FIG20 . In other words, 0<L3 / L1≤47.5%.

[0305] In this way, the first shell wall 1212 is conducive to forming a relatively large flat area along the length direction of the first shell wall 1212, making it easier for other components with larger outer dimensions in the battery 10 to be arranged in this area, thereby providing convenience for the arrangement of other components in the battery 10.

[0306] The specific value of the ratio of the first spacing to the length of the first shell wall 1212 is not limited, for example, 0.5%, 6%, 10%, 15%, 20%, 25%, 30%, 47.5%, etc.

[0307] The specific method for measuring the length of the first shell wall 1212 is not limited. For example, the dimension between the end faces of the battery cell 121 at both ends along the length direction can be measured using a vernier caliper or a ruler.

[0308] The specific method of measuring the length of the protrusion 1214 is not limited. For example, the dimension between the end surfaces of the protrusion 1214 along the length direction can be measured using a vernier caliper or a ruler.

[0309] The specific method of measuring the first spacing is not limited. For example, the dimensions between the two ends of the first shell wall 1212 along the length direction and the dimensions between the two ends of the protrusion 1214 along the length direction are measured respectively using a vernier caliper or a ruler, and the positions of the first center plane 1212b and the second center plane 1212c are calculated. Marks are made on the first center plane 1212b and the second center plane 1212c respectively, and the first shell wall 1212 is placed on a projector. The projected images of the two marks are aligned with the scale of the projector to obtain the size of the first spacing.

[0310] In some embodiments, the ratio of the first spacing to the length of the first shell wall 1212 is in a range of 40% to 47.5%. This further facilitates forming a relatively large flat area on both sides or one side of the protrusion 1214 along the length of the first shell wall 1212, facilitating the placement of other components of the battery 10 with larger outer dimensions in this area.

[0311] The specific value of the ratio of the first spacing to the length of the first shell wall 1212 is not limited, for example, 40%, 42.5%, 45%, 47.5%, etc.

[0312] In some embodiments, the center position of the first housing wall 1212 along its width direction coincides with the center position of the protrusion 1214 along the width direction of the first housing wall 1212. In other words, the second center plane 1212c of the first housing wall 1212 along its width direction coincides with the fourth center plane 1214b of the protrusion 1214 along the width direction of the first housing wall 1212.

[0313] 20 , the second center plane 1212c is a reference plane perpendicular to the width of the first housing wall 1212 and located at half the width of the first housing wall 1212. The fourth center plane 1214b is a reference plane perpendicular to the width of the first housing wall 1212 and located at half the width of the protrusion 1214.

[0314] This further facilitates forming a relatively large flat area in the width direction of the first shell wall 1212 , making it easier for other components of the battery 10 with relatively large outer dimensions to be arranged in this area.

[0315] It should be noted that due to numerous factors in the manufacturing, assembly, and measurement processes, the second center plane 1212c and the fourth center plane 1214b may not coincide with the designed dimensions after the battery cell 121 is manufactured. Therefore, when measuring the coincidence of the second center plane 1212c and the fourth center plane 1214b, the two are considered to coincide within a predetermined tolerance range. Specifically, if the spacing between the second center plane 1212c and the fourth center plane 1214b along the width of the first shell wall 1212 is within a predetermined tolerance range, the two are considered to coincide. The specific value of the predetermined tolerance range is determined based on design requirements.

[0316] In some embodiments, referring to FIG. 20 , the spacing between the center position of the first shell wall 1212 along its width direction and the center position of the protrusion 1214 along the width direction of the first shell wall 1212 is a second spacing, and the ratio of the second spacing to the width dimension of the first shell wall 1212 is greater than 0 and does not exceed 25%.

[0317] The width of the first shell wall 1212 is L2 in FIG20 , and the second spacing is L4 in FIG20 . In other words, 0<L4 / L2≤25%.

[0318] In this way, a certain redundancy is left in the width direction of the protrusion 1214, which facilitates the sealing between the first shell wall 1212 and other parts.

[0319] The specific value of the ratio of the second spacing to the width of the first shell wall 1212 is not limited, for example, 1%, 5%, 10%, 15%, 20%, 25%, etc.

[0320] There is no limitation on the specific method for measuring the width of the battery cell 121 . For example, the dimension between the end surfaces of the first shell wall 1212 along the width direction can be measured using a vernier caliper or a ruler.

[0321] The specific method of measuring the width of the protrusion 1214 is not limited. For example, the dimension between the end surfaces of the protrusion 1214 along the width direction can be measured using a vernier caliper or a ruler.

[0322] There is no limit to the specific method of measuring the second spacing. For example, the dimensions between the two ends of the first shell wall 1212 along the width direction and the dimensions between the two ends of the protrusion 1214 along the width direction are measured respectively by a vernier caliper or a ruler, and the positions of the third center plane 1214a and the fourth center plane 1214b are calculated. Marks are made on the third center plane 1214a and the fourth center plane 1214b respectively, and the battery cell 121 is placed on a projector. The projection images of the two marks are aligned with the scale of the projector to obtain the size of the second spacing.

[0323] In some embodiments, the length of the battery cell 121 is not less than 350 mm (millimeter), which is conducive to the electrochemical reaction between the electrode assembly 1215 and the electrolyte in the battery cell 121 to store or release sufficient electrical energy, and is conducive to the total electrical energy in the battery 10 meeting the demand.

[0324] The length of the battery cell 121 may be any length, for example, 400 mm, 500 mm, 600 mm, 700 mm, 800 mm, 900 mm, 1000 mm, 1200 mm, 1500 mm, etc.

[0325] In some embodiments, the width of the battery cell 121 ranges from 5 mm to 50 mm. This makes it easier to carry the battery cell 121 and better adapts to the sizes of the receiving boxes 11 of different sizes.

[0326] The specific value of the width of the battery cell 121 is not limited, for example, 5 mm, 20 mm, 30 mm, 35 mm, 40 mm, 50 mm, etc.

[0327] In some embodiments, the height of the battery cell 121 ranges from 80 mm to 200 mm, so that the size of the battery cell 121 is convenient for transportation and better adapted to the size of the receiving box 11 of different sizes.

[0328] The specific value of the height of the battery cell 121 is not limited, for example, 80 mm, 100 mm, 120 mm, 150 mm, 180 mm, 200 mm, etc.

[0329] In some embodiments, the length of the protrusion 1214 is the same as the length 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%. In other words, referring to FIG. 20 , 2.5% ≤ L5 / L1 < 97.5%.

[0330] In this way, the space within the protrusion 1214 can be used to accommodate a portion of the electrode assembly 1215 .

[0331] In some embodiments, the width of the protrusion 1214 is the same as the width 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 is in a range of 25% to 100%. In other words, referring to FIG. 20 , 25% ≤ L6 / L2 < 100%.

[0332] In this way, the space within the protrusion 1214 can be used to accommodate a portion of the electrode assembly 1215 .

[0333] In some embodiments, the height of the protrusion 1214 does not exceed 45 mm, that is, referring to FIG. 21 , L7 ≤ 45 mm. This helps ensure that the space within the protrusion 1214 is sufficient to accommodate a portion of the electrode assembly 1215 .

[0334] 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%.

[0335] In this way, it is more conducive to ensuring that the space within the protrusion 1214 meets the requirement of accommodating a portion of the electrode assembly 1215.

[0336] The specific value of the ratio of the length of the protrusion 1214 along the length direction of the first shell wall 1212 to the length of the first shell wall 1212 is not limited, for example, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40%, etc.

[0337] 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%.

[0338] In this way, it is more conducive to ensuring that the space within the protrusion 1214 meets the requirement of accommodating a portion of the electrode assembly 1215.

[0339] 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.

[0340] In some embodiments, the height of the protrusion 1214 ranges from 2 mm to 10 mm. In other words, referring to FIG. 21 , 2 mm ≤ L7 ≤ 10 mm.

[0341] The height of the protrusion 1214 refers to the dimension of the protrusion 1214 along the height direction of the battery cell 121 .

[0342] This further facilitates ensuring that the space within the protrusion 1214 satisfies the requirement of accommodating a portion of the electrode assembly 1215 .

[0343] The specific value of the height of the protrusion 1214 is not limited, for example, 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc.

[0344] In some embodiments, the battery cell 121 includes an explosion-proof valve 1218. The explosion-proof valve 1218 is used to trigger the pressure inside the battery cell 121 to open after thermal runaway occurs inside the battery cell 121, so that the gas and / or liquid in the battery cell 121 can be discharged from the battery cell 121 under pressure, thereby reducing the probability of explosion of the battery cell 121.

[0345] In some embodiments, referring to FIG22 , the explosion-proof valve 1218 is located on the protrusion 1214 . This helps improve the space utilization rate of the space within the protrusion 1214 , making the space within the battery cell 121 more compact, thereby helping to reduce the total volume and outer dimensions of the battery cell 121 .

[0346] In some embodiments, referring to FIG. 23 , the explosion-proof valve 1218 and the protrusion 1214 are located on the first shell wall 1212, with the explosion-proof valve 1218 spaced apart from the protrusion 1214. This arrangement helps reduce the volume of the protrusion 1214 and takes advantage of the larger layout area of ​​the first shell wall 1212. This, on the one hand, facilitates the placement of the explosion-proof valve 1218 with a larger opening flow rate, thereby further reducing the probability of explosion of the battery cells 121. On the other hand, it helps ensure that the direction of the high-temperature airflow after the explosion-proof valve 1218 is opened is consistent with the arrangement of the battery cells 121 within the battery 10, thereby improving the safety of the battery 10.

[0347] In some embodiments, referring to FIG. 24 , the explosion-proof valve 1218 is located on the outer surface of the battery cell 121, facing away from the first shell wall 1212. In other words, the high-temperature airflow ejected from the explosion-proof valve 1218 is directed away from the protrusion 1214. This helps direct the high-temperature airflow away from other components in the battery 10 that are electrically connected to the protrusion 1214, thereby reducing the impact of the high-temperature airflow on other battery cells 121 and other components, lowering the probability of a chain reaction caused by thermal runaway in the battery 10, and improving the safety of the battery 10.

[0348] In some embodiments, referring to FIG. 25 , the explosion-proof valve 1218 is located on the outer surface of the battery cell 121, adjacent to the first shell wall 1212. This allows the high-temperature airflow ejected from the explosion-proof valve 1218 to be directed away from other components of the battery 10 that are electrically connected to the protrusion 1214, thereby reducing the impact of the high-temperature airflow on other battery cells 121 and other components, lowering the probability of a chain reaction due to thermal runaway in the battery 10, and improving the safety of the battery 10.

[0349] The specific arrangement relationship between the protrusion 1214 of the battery cell 121 and the receiving portion 111 b is not limited.

[0350] In some embodiments, referring to FIG. 2 to FIG. 5 , FIG. 37 and FIG. 38 , one battery cell 121 includes a plurality of protrusions 1214 , and the plurality of protrusions 1214 are located in the same receiving portion 111 b .

[0351] This helps reduce the number of bosses 1111, thereby reducing the manufacturing steps of the protrusion 1214, reducing production costs, reducing the difficulty of assembling the protrusion 1214 and the accommodating portion 111b with each other during the assembly of the battery 10, and improving the efficiency of the manufacturing operation.

[0352] In some embodiments, referring to FIG. 26 to FIG. 28 , the protrusions 1214 of a plurality of battery cells 121 are located in the same receiving portion 111 b .

[0353] In this way, it is beneficial to further reduce the number of bosses 1111, reduce production costs, reduce the difficulty of assembling the bosses 1111 and the receiving portion 111b together during the assembly of the battery 10, and improve the efficiency of the manufacturing operation; at the same time, it is beneficial to arrange components such as the sampling member 123 and the busbar 122 in the same receiving portion 111b to electrically connect each battery cell 121 and obtain various types of information of each battery cell 121.

[0354] In some embodiments, referring to Figures 28 to 30, 33 to 36, 39 and 40, the battery 10 includes a plurality of battery cells 121, and the plurality of battery cells 121 are divided into a plurality of groups, each group including 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.

[0355] In this way, the battery cells 121 in the same group are electrically connected through the same accommodation portion 111 b.

[0356] It is understandable that the battery cells 121 in each group may be spaced apart from each other, or may be fitted together to improve space utilization.

[0357] In some embodiments, referring to FIG. 41 to FIG. 54 , a battery cell 121 includes a plurality of protrusions 1214 , the first box wall 111 includes a plurality of accommodating portions 111 b , and each protrusion 1214 in a single battery cell 121 is located in a different accommodating portion 111 b .

[0358] That is, different protrusions 1214 on a single battery cell 121 are separated from each other by different receiving portions 111 b.

[0359] In this way, the probability of short circuit caused by electrical connection between components such as the pole 1213 provided on the protrusion 1214 due to reasons such as wrong contact is reduced, thereby improving the safety of the battery 10.

[0360] In some embodiments, referring to Figures 48 to 54, multiple battery cells 121 are arranged along a first direction, one battery cell 121 includes multiple protrusions 1214 and at least some of the protrusions 1214 are located at one end of the battery cell 121 along the first direction, and in two battery cells 121 adjacent to each other along the first direction, the protrusions 1214 on the two battery cells 121 that are located close to each other at one end along the first direction are located in the same accommodating portion 111b.

[0361] The specific direction of the first direction is not limited, and may be the length direction of the battery 10 , the width direction of the battery 10 , or the like.

[0362] This helps to reduce the distance between the protrusions 1214 of adjacent battery cells 121 , reduces the difficulty of achieving electrical connection between components such as the poles 1213 provided on the protrusions 1214 , and facilitates electrical connection between adjacent battery cells 121 .

[0363] In some embodiments, referring to Figures 7, 8, 9, 31, 33, 46, 47, 53, and 54, the battery assembly 12 further includes a sampling member 123, at least a portion of which is accommodated in the accommodating portion 111b. In other words, the portion of the protrusion 12a located in the accommodating portion 111b comprises a portion of the sampling member 123.

[0364] The sampling component 123 is used to obtain parameter information such as voltage and temperature of each component in the battery 10, such as the battery cell 121, and transmit the obtained parameter information to the battery management system 124 (BMS) so that the battery management system 124 can reasonably implement different control strategies to ensure that the battery 10 is charged and discharged safely and efficiently.

[0365] The protruding portion 12 a includes at least a portion of the sampling member 123 , that is, a portion or the entirety of the sampling member 123 is located in the receiving portion 111 b .

[0366] In this way, the shape of the accommodating cavity 111 a is more adapted to the shape of the shell 1211 of the battery cell 121 . Under the premise that the volume of the accommodating cavity 111 a is constant, the volume of the shell 1211 is increased, thereby increasing the energy density of the battery 10 .

[0367] It should be noted that the specific structure of the sampling component 123 and the principle of sampling different parameter information have been applied in related technologies and will not be described in detail here.

[0368] In some embodiments, referring to Figures 56 to 58 , the battery assembly 12 further includes a battery management system 124 , at least a portion of which is accommodated in the receiving portion 111 b . In other words, the portion of the protrusion 12a located in the receiving portion 111 b comprises a portion of the battery management system 124 .

[0369] The battery management system 124 is used to manage and control each electrical device in each battery 10, monitor the operating status of the battery 10, and adopt appropriate control strategies according to its operating status to prevent the battery 10 from overcharging and over-discharging, thereby extending the service life of the battery 10.

[0370] This helps to make the shape of the accommodating portion 111b better adapt to the outer contour of the battery management system 124, reducing the layout requirements of the battery management system 124; it helps to reduce the overall size and volume of the accommodating box 11 and improve the space utilization inside the accommodating box 11.

[0371] In some embodiments, referring to Figures 56 to 58 , the battery assembly 12 further includes a relay 125 , at least a portion of which is accommodated in the accommodating portion 111 b . In other words, the portion of the protruding portion 12a located in the accommodating portion 111 b includes a portion of the relay 125 .

[0372] When the battery 10 in the electrical device needs to be charged or discharged, the relay 125 responds to the instructions of the power system to open or close the connection between the battery 10 and other electrical components in the electrical device to achieve the transmission or interruption of electric energy.

[0373] This helps to make the shape of the accommodating portion 111b better adapt to the outer contour of the relay 125, reducing the layout requirements of the relay 125; it helps to reduce the overall size and volume of the accommodating box 11 and improve the space utilization inside the accommodating box 11.

[0374] In some embodiments, referring to Figures 56 to 58 , the battery assembly further includes a high-voltage distribution unit 126 , at least a portion of which is accommodated in the accommodating portion 111 b . In other words, the portion of the protruding portion 12a located in the accommodating portion 111 b includes a portion of the high-voltage distribution unit 126 .

[0375] The high-voltage power distribution unit 126 is used to monitor the high-voltage connection status and insulation status of the battery 10 in real time, so as to manage the high-voltage power safety in the battery 10 .

[0376] In this way, the shape of the accommodating portion 111b can better adapt to the outer contour of the high-voltage distribution unit 126, reducing the layout requirements of the high-voltage distribution unit 126; it is beneficial to reduce the overall size and volume of the accommodating box 11 and improve the space utilization inside the accommodating box 11.

[0377] In some embodiments, referring to FIG56 , the battery assembly further includes a high- and low-voltage wiring harness 127 , at least a portion of which is accommodated in the accommodating portion 111 b . In other words, the portion of the protruding portion 12a located in the accommodating portion 111 b includes a portion of the high- and low-voltage wiring harness 127 .

[0378] The high and low voltage wiring 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 electrical energy and control signals.

[0379] In this way, the shape of the accommodating portion 111b can better adapt to the routing arrangement of the high and low voltage wiring harnesses 127, reduce the risk of the high and low voltage wiring harnesses 127 being damaged by bending or squeezing, and help reduce the overall size and volume of the accommodating box 11, and improve the space utilization inside the accommodating box 11.

[0380] In some embodiments, referring to Figures 8, 9 and 58, the accommodating portion 111b includes a first accommodating sub-portion 111c and a second accommodating sub-portion 111d, a portion of the protruding portion 12a is accommodated in the space of the first accommodating sub-portion 111c, and another portion of the protruding portion 12a is accommodated in the space of the second accommodating sub-portion 111d.

[0381] That is, different parts of the protruding portion 12a are respectively located in different receiving portions 111b.

[0382] In this way, the shape of the first accommodating sub-portion 111c and the shape of the second accommodating sub-portion 111d can be adapted to the actual outer contour shape of the protruding portion 12a, which is conducive to reducing the outer contour size and total volume of the accommodating 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.

[0383] It is understandable that the first accommodating sub-portion 111c and the second accommodating sub-portion 111d can be connected to each other or isolated from each other, depending on the requirements of the arrangement of various components in the battery assembly.

[0384] In some embodiments, referring to Figures 2 to 4 and 26 to 53, the outer surface protrusion 1214 of the first box wall 111 forms a boss 1111, which is located on the side of the accommodating portion 111b away from the accommodating cavity 111a. In other words, the boss 1111 is correspondingly disposed with the accommodating portion 111b.

[0385] In this way, it is beneficial to make the area of ​​the first box wall 111 with the protrusion 1214 consistent with the thickness of the other areas, which is beneficial to the overall size of the first box wall 111, and further beneficial to reducing the three-dimensional size of the storage box 11, reducing the overall volume of the battery 10, and facilitating the improvement of the energy density and space utilization of the battery 10.

[0386] The specific method of forming the accommodating portion 111 b and the boss 1111 on the first box wall 111 is not limited. For example, the first box wall 111 is made of metal, and the accommodating portion 111 b and the boss 1111 are formed at one time by a stamping process.

[0387] In some embodiments, referring to Figures 26 to 33 , the length of the boss 1111 is the same as the length of the accommodating cavity 111a, and the two have the same lengthwise dimensions. The lengthwise direction of the accommodating cavity 111a is the lengthwise direction of the battery 10.

[0388] In this way, the size of the accommodating portion 111 b along the length direction of the battery 10 can be increased as much as possible, thereby facilitating the size and volume of the accommodating portion 111 b to adapt to various protrusions 12 a of different sizes and shapes.

[0389] In some embodiments, referring to Figures 34 to 36 , the length of the boss 1111 is the same as the width of the accommodating cavity 111a. The width of the accommodating cavity 111a is the width of the battery 10.

[0390] In this way, the size of the receiving portion 111 b along the width direction of the battery 10 can be increased as much as possible, thereby facilitating the size and volume of the receiving portion 111 b to adapt to various protrusions 12 a of different sizes and shapes.

[0391] In some embodiments, referring to FIG. 29 , the width of the boss 1111 does not exceed 500 mm, that is, L8 ≤ 500 mm.

[0392] 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 so as to adapt to other components in the electrical device and reduce 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 caused by its large width and resulting in reduced structural strength, and reduces the probability of damage to components in the accommodating portion 111b due to deformation of the boss 1111.

[0393] In some embodiments, referring to FIG29 , the width of the boss 1111 ranges from 50 mm to 300 mm, that is, 50 mm ≤ L8 ≤ 300 mm. This allows the space within the receiving portion 111 b to accommodate the protruding portion 12 a.

[0394] The specific value of the width of the boss 1111 is not limited. For example, the width of the boss 1111 can be 50 mm, 80 mm, 100 mm, 200 mm, 300 mm, etc.

[0395] In some embodiments, referring to FIG. 31 , the height of the boss 1111 does not exceed 300 mm, that is, L9 ≤ 300 mm.

[0396] In this way, it is compatible with 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 that the boss 1111 will be deformed and bent by shear stress perpendicular to the height direction, thereby damaging the protruding portion 12a in the accommodating portion 111b.

[0397] In some embodiments, referring to FIG. 31 , the height of the boss 1111 ranges from 5 mm to 100 mm, ie, 5 mm ≤ L9 ≤ 100 mm.

[0398] In this way, the space within the accommodation portion 111 b can meet the arrangement requirements of the protruding portion 12 a.

[0399] The specific value of the height dimension of the boss 1111 is not limited. For example, the width dimension of the boss 1111 can be 5mm, 10mm, 20mm, 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, etc.

[0400] In the embodiment where the protrusion 1214 is provided and at least a portion of the protrusion 1214 is located in the receiving portion 111b, referring to Figures 21 and 31, the height of the protrusion 1214 does not exceed 77% of the height of the boss 1111. In other words, L7 / L9≤77%.

[0401] In this way, on the one hand, it is beneficial to space the protrusion 1214 and the accommodating portion 111b along the height direction of the battery 10 to reduce the probability of damage caused by direct contact between the two, and it is also convenient to arrange other components of the battery assembly 12 in the accommodating portion 111b; on the other hand, the thickness of the boss 1111 can better protect the protrusion 1214.

[0402] In some embodiments, the height of the protrusion 1214 accounts for 36% to 53% of the height of the boss 1111. In other words, 36%≤L7 / L9≤53%.

[0403] In this way, the space size in the accommodating portion 111b further meets the requirements for arranging other components of the battery assembly 12; and it is further beneficial for the boss 1111 to have sufficient strength to protect the protrusion 1214.

[0404] In some embodiments, referring to Figure 31 , the height of the protruding portion 12a does not exceed 94% of the height of the boss 1111. In other words, L7 / L9≤94%.

[0405] This helps to reduce the probability of the protruding portion 12a and the boss 1111 abutting against each other in the vertical direction, thereby reducing the probability of damage caused by the abutment between the two.

[0406] In some embodiments, referring to FIG. 31 , the height of the protruding portion 12 a accounts for 74% to 86% of the height of the boss 1111 .

[0407] In this way, the probability of the protruding portion 12a and the boss 1111 abutting against each other in the vertical direction is further reduced, and the space utilization rate of the protruding portion 12a to the accommodating portion 111b is improved.

[0408] 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.

[0409] It is understandable that after disassembly, a passage connecting the accommodating cavity 111 a and the outside can be formed on the boss 1111 or the first box wall 111 .

[0410] In this way, by removing part or all of the boss 1111, it is convenient to inspect and repair the battery assembly 12 in the battery 10 through the formed channel without completely disassembling the box, thereby simplifying the operation steps.

[0411] There is no limitation on the specific method of making part or all of the boss 1111 detachable.

[0412] 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, which is connected to the accommodating cavity 111a. The edge of the through hole 1112a is ringed 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 together form a boss 1111. The inner wall of the through hole 1112a and the surface of the mounting plate 1113 facing the accommodating cavity 111a are surrounded to form a accommodating portion 111b.

[0413] That is, the mounting plate 1113 forms a detachable portion of the boss 1111. Thus, after the boss 1111 is disassembled, the battery assembly 12 located in the through hole 1112a and the accommodating cavity 111a can be inspected through the opening of the through hole 1112a.

[0414] The mounting plate 1113 is in a plate shape and cooperates with the mounting step 1112b, making it easy to install.

[0415] The specific manner of achieving the 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 by screws and threaded holes.

[0416] In some embodiments, referring to Figures 31 to 33, the first box wall 111 includes a sealing ring 1114, which is clamped between the mounting step 1112b and the mounting plate 1113. The sealing ring 1114 can produce elastic deformation so that it can be sealed with the mounting step 1112b and the mounting plate 1113 respectively, thereby reducing the probability of external foreign matter entering the interior of the battery 10 through the seam between the mounting step 1112b and the mounting plate 1113 during use of the battery 10.

[0417] In other embodiments, referring to Figure 32, 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, and the through hole 1112a is connected to the accommodating cavity 111a. The mounting plate 1113 is detachably covered on the box wall body 1112 to cover the through hole 1112a. The inner wall of the through hole 1112a and the surface of the mounting plate 1113 facing the accommodating cavity 111a are surrounded to form an accommodating portion 111b.

[0418] That is, the boss 1111 is formed only by the mounting plate 1113 .

[0419] In this way, the structures of the boss 1111 and the box wall body 1112 are simplified, which helps to reduce production costs.

[0420] In some embodiments, referring to FIG. 32 , the first box wall 111 includes a sealing ring 1114, which is sandwiched between the box wall body 1112 and the mounting plate 1113. The sealing ring 1114 can produce elastic deformation so that it can be sealed with the box wall body 1112 and the mounting plate 1113, respectively, thereby reducing the chance of foreign matter from the outside entering the interior of the battery 10 through the joint between the box wall body 1112 and the mounting plate 1113 during use.

[0421] It is understandable that the battery assembly 12 needs to be fixed within the battery 10 .

[0422] In some embodiments, referring to FIG. 55 , the battery 10 includes a first adhesive layer 13 , which is adhered between the inner wall of the accommodating cavity 111 a and the battery assembly 12 .

[0423] In this way, the inner wall of the accommodating cavity 111a and the battery assembly 12 are bonded together by the adhesion force of the first adhesive layer 13, so that the relative position between the battery assembly 12 and the box body can be kept fixed; at the same time, the first adhesive layer 13 is formed by coating the adhesive, which is conducive to improving the working efficiency.

[0424] In some embodiments in which a first adhesive layer is provided, referring to FIG. 55 , the accommodating portion 111b is located on the top side of the accommodating box 11 along the height direction, the top wall of the battery cell 121 along the height direction of the accommodating cavity 111a is the first shell wall 1212, and the first adhesive layer 13 is adhered between the top inner wall of the accommodating cavity 111a along the height direction of the accommodating cavity 111a and the first shell wall 1212.

[0425] The height direction of the container 11 , that is, the height direction of the battery 10 , is also the direction of gravity.

[0426] In this way, the first adhesive layer 13 can play a role of separation and sealing, preventing objects in the accommodating portion 111b and the accommodating cavity 111a from entering each other; at the same time, the advantage of the larger area of ​​the first shell wall 1212 can be utilized to apply as much adhesive as possible to form the first adhesive layer 13, so as to improve the adhesion and fixation effect.

[0427] In some embodiments having a first adhesive layer, referring to FIG. 55 , the first adhesive layer 13 is adhered between the bottom inner wall of the accommodating cavity 111a along the height direction of the accommodating cavity 111a and the bottom wall of the battery cell 121 along the height direction of the accommodating cavity 111a.

[0428] In this way, during the adhesive coating process, unsolidified adhesive is prevented from contacting the pole 1213, the sampling member 123 and the busbar 122, thereby reducing the adverse effects of the adhesive on the normal operation of the components in the battery 10; at the same time, the gravity of the battery cell 121 can be utilized to squeeze the adhesive, so that the adhesive spreads more evenly.

[0429] In some embodiments, referring to Figures 8, 9, 31, 32, 47, and 54, the battery 10 includes a temperature control assembly 14, which is sandwiched between the inner wall of the accommodating cavity 111a and the battery assembly 12.

[0430] The temperature control component 14 is provided with a flow channel and a temperature control medium inside. The temperature control medium can flow in the flow channel to transfer heat from one area of ​​the temperature control component 14 to another area, thereby achieving the purpose of adjusting the temperature of the object in contact with the temperature control component 14.

[0431] In this way, the temperature control component 14 absorbs the heat of the battery assembly 12 during operation, thereby reducing the operating temperature of the battery assembly 12 and improving the safety of the battery 10. At the same time, the temperature control component 14 can radiate part of the heat directly to the outside through the wall of the container 11, thereby increasing the heat dissipation area and improving the temperature control effect.

[0432] The specific type of the temperature control medium is not limited, such as water.

[0433] It should be noted that the specific structure and heat exchange principle of the temperature control component 14 have been applied in related technologies and will not be described in detail here.

[0434] In some embodiments, the temperature control assembly 14 is located between the inner wall of the accommodating cavity 111a and the first shell wall 1212. This can better utilize the larger area of ​​the first shell wall 1212 to increase the contact area between the temperature control assembly 14 and the battery cells 121, more effectively transfer the heat generated by the battery 10 during operation to the shell wall and radiate it to the outside world, thereby improving the temperature control effect.

[0435] In some embodiments, referring to Figures 8, 9, 31, 32, 47, and 54, the temperature control component 14 is located between the top 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.

[0436] In this way, the temperature control assembly 14 will not be squeezed by the gravity of the battery assembly 12 and thus affect the realization of its temperature control function.

[0437] In some embodiments where the protrusion 12a is located on the top of the battery assembly 12, the temperature control assembly 14 is located between the bottom inner wall of the accommodating cavity 111a along the height direction of the accommodating cavity 111a and the bottom surface of the battery assembly 12 along the height direction of the accommodating cavity 111a.

[0438] In this way, the probability of interference between the arrangement of the temperature control component 14 and the protruding portion 12a is reduced.

[0439] It is understandable that the position of the temperature control component 14 in the battery 10 needs to be fixed so that the temperature control effect of the temperature control component 14 can be fully exerted.

[0440] In some embodiments, referring to FIG. 8 , FIG. 9 , FIG. 31 and FIG. 32 , the battery 10 includes a second adhesive layer 15 , which is adhered between the inner wall of the accommodating cavity 111 a and the outer surface of the temperature control assembly 14 .

[0441] In this way, the relative position between the temperature control component 14 and the containing box 11 is fixed, reducing the probability of friction damage caused by relative movement between the two; at the same time, it is convenient for the temperature control component 14 to transfer heat directly to the containing box 11 and radiate it to the outside.

[0442] In some embodiments, referring to FIG. 8 , FIG. 9 , FIG. 31 and FIG. 32 , the battery 10 includes a third adhesive layer 16 , which is adhered between the inner wall of the accommodating cavity 111 a and the outer surface of the battery assembly 12 .

[0443] In this way, the relative position between the temperature control component 14 and the battery component 12 is fixed, reducing the probability of friction damage caused by relative movement between the two, and allowing heat to be better transferred between the temperature control component 14 and the battery component 12, thereby improving the temperature control effect.

[0444] Referring to Figures 31 to 33, in an embodiment in which the temperature control component 14 is located between the top 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 inner wall of the accommodating cavity 111a along the height direction of the accommodating cavity 111a and the top surface of the temperature control component 14.

[0445] 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 .

[0446] An embodiment of the present disclosure further provides an electrical device, which includes any one of the batteries 10 in the aforementioned embodiments, and the battery 10 serves as a power source for the electrical device.

[0447] In this way, by providing the cooperation between the accommodating portion 111 b and the protruding portion 12 a , the overall volume of the electrical device can be reduced, making the structure of the electrical device more compact.

[0448] In some embodiments, referring to FIG. 59 and FIG. 60 , the electrical device is a vehicle 100 , which includes a seat 20 and any battery 10 in the aforementioned embodiments, and the boss 1111 is located on a side of the receiving box 11 facing the seat 20 .

[0449] The battery 10 serves as a power source for the vehicle 100 and is used to provide electricity for normal operation of the vehicle 100 , such as driving and powering equipment.

[0450] The seat 20 is used for passengers of the vehicle 100 to sit and place items.

[0451] In this way, it is beneficial to increase the volume of the battery 10 in the vehicle 100, and then it is beneficial to increase the capacity of the battery 10, which is beneficial to improving the cruising range of the vehicle 100; at the same time, it is beneficial to make the flat box wall of the storage box 11 face the ground side, which is beneficial to make the bottom surface of the vehicle 100 smoother, reduce the drag coefficient of the vehicle 100 and increase the ground clearance of the vehicle 100, and avoid the situation in which the boss 1111 increases the wind resistance of the vehicle 100 and collides with foreign objects on the road during driving, thereby avoiding the situation in which the battery 10 is damaged.

[0452] The drag coefficient is a parameter used to describe the air resistance experienced by an object in air. Its value reflects the degree to which the object's shape affects air flow. A higher drag coefficient indicates greater air resistance encountered by the object during travel. Therefore, the drag coefficient directly impacts the energy consumption of vehicle 100.

[0453] Ground clearance refers to the distance between the ground and the rigid objects at the bottom of the vehicle body when the vehicle 100 is driving. Its size is directly related to the passability of the vehicle 100.

[0454] In some embodiments, referring to FIG. 59 , a vehicle 100 includes a body member 50 , the bottom side of which is open, a battery 10 is disposed at the open position of the body member 50 to form a passenger space 100 a together with the body member 50 , and a seat 20 is located in the passenger space 100 a .

[0455] The body 50, also known as the body in white, is the welded, but unpainted, body of the vehicle. The painted body in white, along with the interior and exterior trim, electrical and electronic systems, chassis 60, and powertrain, complete the vehicle.

[0456] In other words, the body member 50 and the battery 10 together form the vehicle compartment 100, and the protrusion 1214 is located within the passenger space 100a. This helps increase the volume of the battery 10 within the limited three-dimensional dimensions of the vehicle 100, and also helps the protrusion 1214 utilize the space within the passenger space 100a, thereby improving the space utilization rate within the passenger space 100a.

[0457] In some embodiments, referring to FIG. 59 , a vehicle 100 includes a chassis 60 , a body member 50 is disposed on the chassis 60 , the chassis 60 includes a battery 10 , and a first box wall 111 forms a floor of the passenger space 100 a .

[0458] In other words, the battery 10 serves as part of the chassis 60. Thus, the battery 10 helps improve the overall structural strength of the chassis 60, and the first box wall 111 serves as the floor of the passenger space 100a, which helps improve the utilization rate of the vehicle interior space. At the same time, it helps improve the structural strength of the entire passenger space 100a, thereby improving the safety of the vehicle 100.

[0459] It is understandable that parts such as felt can be laid on the surface of the first box wall 111 to improve the passenger's riding experience and visual experience.

[0460] It is understandable that the boss 1111 and the seat 20 cooperate with each other to improve the utilization of the space in the vehicle 100.

[0461] In some embodiments, referring to FIG. 59 to FIG. 65 , in a projection perpendicular to the vertical direction, a portion or all of the projection of the boss 1111 is located within the projection range of the seat 20 .

[0462] It is understood that when an occupant is seated in seat 20, due to the occupant's sitting posture, the space below the contact surface between the occupant and seat 20, including the seat 20 itself and the space below the seat 20, is not accessible or difficult to access by the occupant's limbs. At least a portion of the boss 1111 is located within the space below the contact surface between the occupant and seat 20.

[0463] In this way, the boss 1111 utilizes the space under the seat 20, reducing the probability of the passenger colliding with the boss 1111 during riding, thereby reducing the encroachment of the boss 1111 on the passenger's normal activity space, improving the user experience, and improving the space utilization rate in the vehicle 100.

[0464] In some embodiments, referring to Figures 59 to 71, the boss 1111 is located below the seat 20, that is, along the height direction of the vehicle 100, the top of the boss 1111 is lower than the vehicle 100.

[0465] In some embodiments, referring to Figures 60 to 62 and 65, there are multiple seats 20, and the seats 20 are spaced apart to form at least one row of seats 20, and a first gap 20a is formed between the seats 20 in the same row along the width direction of the vehicle 100. The boss 1111 includes a first boss 1111a, and part or all of the first boss 1111a is located in the first gap 20a.

[0466] The longitudinal direction of the vehicle 100 refers to the direction of the maximum dimension among the three-dimensional dimensions of the vehicle 100. Generally, the longitudinal direction of the vehicle 100 is also the forward or backward direction of the vehicle 100 when traveling in a straight line.

[0467] The width direction of the vehicle 100 refers to the direction of the dimension perpendicular to the length direction and the gravity direction of the vehicle 100. The gravity direction is the vertical direction.

[0468] It is understandable that when an occupant sits on the seat 20 , it is difficult for the occupant's legs to enter the first gap 20 a due to the occupant's sitting posture.

[0469] In this way, the boss 1111 can utilize the space in the first gap 20a, which increases the volume of the battery 10 while reducing the probability of the passenger colliding with the boss 1111 during riding, reduces the interference of the boss 1111 on the normal activities of the passenger, and improves the space utilization rate in the vehicle 100.

[0470] The number of seats 20 in each row is not limited, for example, one, two, three, etc. It is understandable that other equipment in the vehicle 100, such as armrests, a vehicle refrigerator, a storage box, etc., can also be arranged in the first gap 20a to improve the space utilization in the vehicle and enhance the user experience.

[0471] It can be understood that the projection of a partial area of ​​the boss 1111 is located within the projection range of the seat 20, and the partial area is located in the first gap 20a.

[0472] In some embodiments, referring to Figures 60 to 62, the plurality of seats 20 are divided into at least two rows spaced apart along the length direction of the vehicle 100, and the first boss 1111a extends along the length direction of the vehicle 100 to below another adjacent row of seats 20.

[0473] In this way, on the one hand, the first boss 1111a extends along the length direction of the vehicle 100. When the projection area of ​​the first boss 1111a perpendicular to the vertical direction is constant, it is beneficial to reduce the size of the first boss 1111a along the width direction of the vehicle 100, thereby helping to reduce the interference of the first boss 1111a on multiple passengers in the vehicle, improving the user experience, reducing the probability of interference with passengers' riding and activities, and helping to improve the space utilization rate of the battery 10 in the interior space of the vehicle 100 and increase the capacity of the battery 10. On the other hand, it enables the first boss 1111a to make better use of the space in the first gap 20a, further improving the space utilization rate in the vehicle 100.

[0474] It can be understood that, for seats 20 in a row adjacent to the first gap 20 a along the length direction of the vehicle 100 , the probability of an occupant sitting on the portion corresponding to the first gap 20 a along the length direction of the vehicle 100 is low.

[0475] In some embodiments, referring to Figures 66 to 71, the boss 1111 includes a second boss 1111b, which extends along the length direction of the vehicle 100 and is located on one side of the seat 20 along the width direction of the vehicle 100, and the seat 20 is located between the two second bosses 1111b.

[0476] This reduces interference of the second protrusion 1111b with the occupant's leg and foot movements, improving the occupant's experience. In some embodiments, referring to Figures 66 to 71 , there are two second protrusions 1111b, each located at one end of the battery 10 along the width of the vehicle 100, with the seat 20 positioned between the two second protrusions 1111b. In other words, the seat 20 is located within the area between the two second protrusions 1111b.

[0477] This is beneficial for increasing the space for the occupant's legs and feet to move, further reducing the interference of the second boss 1111b on the occupant's legs and feet to move, and effectively utilizing the space along the width edge of the vehicle 100.

[0478] In some embodiments, referring to FIG. 66 to FIG. 71 , the second boss 1111 b extends lengthwise to both ends of the battery 10 along the lengthwise direction of the vehicle 100 , so as to further improve the space utilization of the battery 10 in the interior space of the vehicle 100 and increase the capacity of the battery 10 .

[0479] In some embodiments, the second boss 1111 b is spaced apart from the seat 20 along the width direction of the vehicle 100 .

[0480] This helps to increase the space for passengers' legs and feet to move, and improve the user's riding experience.

[0481] In some embodiments, a portion of the second boss 1111b is located below the seat 20. This helps reduce the width dimensions of the battery 10 and the vehicle 100, making the battery 10 and the vehicle 100 more compact.

[0482] In some embodiments, referring to Figures 63 to 65 , the bosses 1111 include one or more third bosses 1111c. The third bosses 1111c extend along the width of the vehicle 100, with at least a portion of the third bosses 1111c located below seats 20 in the same row. In this way, the third bosses 1111c can fully utilize the space below the seats 20 along the width of the vehicle 100. Furthermore, the third bosses 1111c can minimize encroachment on the space between adjacent rows of seats 20, reducing interference with passenger movement and enhancing the passenger experience.

[0483] In some embodiments, referring to FIG. 63 , a portion of the third boss 1111 c is located below the seat 21 , and another portion is located in the first gap 20 a .

[0484] In this way, the third boss 1111 c can better utilize the space under the seat 20 and the space in the first gap 20 a , which is beneficial to improving the space utilization of the battery 10 in the vehicle 100 and increasing the capacity of the battery 10 .

[0485] It can be understood that there are multiple first gaps 20a between multiple seats 20 in the same row, and the third boss 1111c extends along the width direction of the vehicle 100 and passes through all the first gaps 20a and is located under each seat 20 in the same row to improve space utilization.

[0486] In some embodiments, referring to Figures 63 to 65 , there are multiple seats 20, which are arranged in at least two rows spaced apart along the length of the vehicle 100. One or more rows of seats 20 are provided and extend along the width of the vehicle 100. The width of each seat 20 is no less than the width of the top surface of the battery 10. The third boss 1111c extends along the width and is located below the row of seats 20. In other words, the row of seats 20 can fully utilize the interior space along the width of the vehicle 100, thereby simultaneously accommodating more passengers.

[0487] In this way, the third boss 1111c can increase its size along the width direction of the vehicle 100 as much as possible, thereby better utilizing the space under the seat 20, which is beneficial to improving the space utilization of the battery 10 in the interior space of the vehicle 100 and increasing the capacity of the battery 10.

[0488] It can be understood that the boss 1111 is adapted to the specific structure of the seat 20 .

[0489] In some embodiments, referring to Figures 60, 61, 63, 65 and 70, the seat 20 includes a seat 21, and at least a portion of the seat 21 is spaced from the battery 10 along the height direction of the vehicle 100 to form a second gap 20b, and at least a portion of the boss 1111 is located in the second gap 20b and is spaced apart from the seat 21 along the vertical direction.

[0490] The seat 21 is used for passengers to sit on and bear the weight of the passengers.

[0491] In this way, the probability of the boss 1111 being damaged by the pressure of the passenger sitting on the seat due to direct contact between the boss 1111 and the seat seat 21 can be reduced.

[0492] The specific method of forming the second gap 20b is not limited.

[0493] For example, referring to Figures 60, 61, 63, 65 and 70, the seat 20 includes a support leg 23, the seat 21 and the battery 10 are spaced apart in the vertical direction to form a second gap 20b, and the support leg 23 is connected between the seat 21 and the battery 10.

[0494] In this way, it is easy to achieve the spacing setting between the seat 21 and the boss 1111, so that the shape of the seat 21 is regular and 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 inspect, disassemble and maintain through the second gap 20b. It is also convenient for the passengers to extend their feet into the second gap 20b, which makes it easier for the passengers to sit in a relaxed posture and improves riding comfort.

[0495] It is understandable that the connection position of the support leg 23 and the battery 10 is not limited. Referring to FIG. 63 , it can be located on the boss 1111 ; referring to FIG. 60 , it can also be located in other areas of the first box wall 111 except the boss 1111 .

[0496] The support leg 23 and the battery 10 are detachably connected.

[0497] It is understandable that the number of the legs 23 is not limited and can be one or more.

[0498] In some embodiments, referring to FIG. 60 , there are multiple supporting legs 23 , which are spaced apart along the width direction of the vehicle 100 , and part or all of the boss 1111 is located between two adjacent supporting legs 23 along the width direction of the vehicle 100 .

[0499] In this way, the arrangement of the boss 1111 facilitates the use of the space between the two legs 23 , thereby improving the space utilization of the battery 10 in the interior space of the vehicle 100 and increasing the capacity of the battery 10 .

[0500] It is understandable that the seat 21 includes a cushion 211 , which is made of elastically deformable materials such as sponge to improve the riding experience of the occupant.

[0501] It is understandable that the shape of the cushion pad 211 needs to be constrained to support the seat 21 .

[0502] In some embodiments having a cushion pad 211 , referring to FIG. 59 , a boss 1111 is embedded in the cushion pad 211 to support the seat 21 along the height direction of the vehicle 100 .

[0503] In other words, the boss 1111 forms at least a portion of a structure that supports the cushion 211. This helps simplify the structure of the seat 20, improves the utilization of the interior space of the seat 20, and reduces production costs.

[0504] It is understandable that the seat 21 includes a frame, which is inserted into the cushion 211 and fits with the cushion 211 to constrain the shape of the cushion 211.

[0505] In some embodiments, the frame is connected to the boss 1111 to form a force transmission path among the cushion 211 , the frame, and the boss 1111 , thereby transferring the weight of the occupant to the battery 10 .

[0506] The various embodiments / implementations provided in the present disclosure can be combined with each other without causing any contradiction.

[0507] The foregoing description is merely a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present disclosure shall be included within the scope of protection of the present disclosure. Industrial Applicability

[0508] The embodiments of the present disclosure provide a battery and an electrical device that are beneficial to improving space utilization.

Claims

1. A battery, wherein: include: A containing box is provided with a containing cavity, and the containing box comprises a first box wall; A battery assembly is accommodated in the accommodation cavity, and the battery assembly includes a protruding portion; The first box wall is provided with a receiving portion, and at least a part of the protruding portion is received in the receiving portion.

2. The battery according to claim 1, wherein Along the thickness direction of the first box wall, a portion of the projection of the battery assembly is located outside the projection of the accommodation portion.

3. The battery according to claim 1, wherein The battery assembly further includes a plurality of battery cells. The battery cells include a shell having a first shell wall. The protruding portion is disposed on the first shell wall.

4. The battery according to claim 3, wherein The battery assembly further includes a busbar, and the battery cell further includes a pole, which is arranged on the first shell wall. The busbar electrically connects the poles of two battery cells, and the protruding portion includes the busbar, and at least a portion of the busbar is accommodated in the accommodation portion.

5. The battery according to claim 4, wherein The pole is at least partially accommodated in the accommodation portion.

6. The battery according to claim 4 or 5, wherein: The poles of at least two battery cells are located in the same receiving portion.

7. The battery according to claim 4, wherein A distance between an inner wall of the accommodation portion and the current collector along a first direction is not less than 1% of a dimension of the accommodation portion along the first direction, and the first direction is perpendicular to a thickness direction of the first box wall.

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

9. The battery according to any one of claims 1 to 8, wherein: The battery includes an insulating member, and the insulating member is arranged on the inner wall of the accommodation portion.

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

11. The battery according to any one of claims 3 to 10, wherein: The first shell wall includes a protrusion, the protruding portion includes the protrusion, and at least a portion of the protrusion is accommodated in the accommodation portion.

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

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

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

15. The battery according to claim 13 or 14, wherein The two poles are arranged at intervals along the length direction of the first shell wall.

16. The battery according to claim 13 or 14, wherein The two poles are arranged at intervals along the width direction of the first shell wall.

17. The battery according to any one of claims 11 to 16, wherein: The battery cell further includes an electrode assembly, which is accommodated in the shell. A portion of the first shell wall is recessed to form a avoidance groove, which is located on a side of the protrusion close to the electrode assembly, and a portion of the electrode assembly is located in the avoidance groove.

18. The battery according to claim 17, wherein The electrode assembly includes a main body and a pole ear. The pole ear is arranged on a side edge of the main body and is electrically connected to the main body. At least a portion of the pole ear is located in the avoidance groove.

19. The battery according to claim 18, wherein At least a portion of the pole tab is located in the receiving portion.

20. The battery according to claim 18, wherein The battery cell further includes a pole, which is disposed on the first shell wall, and the electrode assembly further includes a transfer plate, through which the pole lug is electrically connected to the pole, and at least a portion of the pole lug is located in the accommodation portion; And / or, at least a portion of the adapter plate is located in the receiving portion.

21. The battery according to claim 18, wherein A portion of the main body is located in the avoidance groove.

22. The battery according to any one of claims 11 to 21, wherein The shell comprises a cover plate and a shell body, the cover plate is arranged to cover the opening of the shell body, and the protrusion is arranged on the cover plate; And / or, the protrusion is arranged on the shell.

23. The battery according to any one of claims 11 to 21, wherein: The number of the protrusions on the first shell wall is two, and the two protrusions are respectively located at two opposite ends of the first shell wall.

24. The battery according to any one of claims 11 to 23, 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 according to claim 24, wherein: The protrusion is located at one end of the first shell wall along the length direction of the first shell wall.

26. A battery according to any one of claims 11 to 23, wherein: The protrusion is located at a central position of the first shell wall along the length direction of the first shell wall.

27. A battery according to any one of claims 11 to 23, wherein: The distance between the center position of the first shell wall along its length direction and the center position 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%.

28. The battery according to claim 27, wherein The ratio of the first spacing to the length of the first shell wall ranges from 40% to 47.5%.

29. A battery according to any one of claims 11 to 28, wherein The center position of the first shell wall along the width direction thereof coincides with the center position of the protrusion along the width direction of the first shell wall.

30. A battery according to any one of claims 11 to 28, wherein The distance between the center position of the first shell wall along its width direction and the center position of the protrusion along the width direction of the first shell wall is a second distance, and the ratio of the second distance to the width dimension of the first shell wall is greater than 0 and does not exceed 25%.

31. A battery according to any one of claims 11 to 30, wherein: The length of the battery cell is not less than 350 mm; And / or, the width of the battery cell ranges from 5 mm to 50 mm; And / or, the height dimension of the battery cell ranges from 80 mm to 200 mm.

32. A battery according to any one of claims 11 to 31, wherein The length direction of the protrusion is the same as the length direction of the first shell wall, and the ratio of the length dimension of the protrusion to the length dimension of the first shell wall is in a range of 2.5% to 97.5%; And / or, the width direction of the protrusion is the same as the width direction of the first shell wall, and the ratio of the width dimension of the protrusion to the width dimension of the first shell wall is in a range of 25% to 100%; And / or, the height dimension of the protrusion does not exceed 45 mm.

33. A battery according to any one of claims 11 to 31, wherein The length direction of the protrusion is the same as the length direction of the first shell wall, and the ratio of the length dimension of the protrusion to the length dimension of the first shell wall is in a range of 5% to 40%; And / or, the width direction of the protrusion is the same as the width direction of the first shell wall, and the ratio of the width dimension of the protrusion to the width dimension of the first shell wall is in a range of 60% to 90%; And / or, the height dimension of the protrusion ranges from 2 mm to 10 mm.

34. A battery according to any one of claims 11 to 33, wherein: The battery cell includes 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. A battery according to any one of claims 11 to 33, wherein The battery cell comprises an explosion-proof valve, and the explosion-proof valve is located on a wall surface of the outer surface of the battery cell away from the first shell wall; Alternatively, the explosion-proof valve is located on a wall surface of the outer surface of the battery cell adjacent to the first shell wall.

36. A battery according to any one of claims 11 to 35, wherein: One battery cell includes a plurality of protrusions, and the plurality of protrusions are located in the same receiving portion.

37. A battery according to any one of claims 11 to 36, wherein The protrusions of a plurality of the battery cells are located in the same receiving portion.

38. A battery according to any one of claims 11 to 35, wherein: One of the battery cells includes a plurality of protrusions, the first box wall includes a plurality of accommodating portions, and each of the protrusions in a single battery cell is located in a different accommodating portion.

39. A battery according to any one of claims 11 to 35, wherein: A plurality of the battery cells are arranged along a first direction, one of the battery cells comprises a plurality of the protrusions and at least some of the protrusions are located at one end of the battery cell along the first direction, and in two battery cells adjacent to each other along the first direction, the protrusions on the two battery cells that are located close to each other at one end along the first direction are located in the same accommodating portion.

40. A battery according to any one of claims 1 to 39, wherein The battery assembly further includes a sampling member, at least a portion of which is accommodated in the accommodation portion; And / or, the battery assembly further comprises a battery management system, at least a portion of the battery management system is accommodated in the accommodation portion; And / or, the battery assembly further comprises a relay, at least a portion of the relay being accommodated in the accommodation portion; And / or, the battery assembly further comprises a high-voltage power distribution unit, at least a portion of which is accommodated in the accommodation portion; And / or, the battery assembly further includes high and low voltage wiring harnesses, at least a portion of which is accommodated in the accommodation portion.

41. A battery according to any one of claims 1 to 40, wherein The accommodation portion includes a first accommodation sub-portion and a second accommodation sub-portion, a portion of the protruding portion is accommodated in a space of the first accommodation sub-portion, and another portion of the protruding portion is accommodated in a space of the second accommodation sub-portion.

42. A battery according to any one of claims 1 to 41, wherein The outer surface of the first box wall is raised to form a boss, and the boss is located on a side of the accommodating portion away from the accommodating cavity.

43. The battery according to claim 42, wherein The length direction of the boss is the same as the length direction of the accommodating cavity, and the dimensions of the two along the length direction are the same; 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. A battery according to claim 42 or 43, wherein The width of the boss does not exceed 500 mm; And / or, the height dimension of the boss does not exceed 300 mm.

45. A battery according to claim 42 or 43, wherein The width 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. ​​A battery according to any one of claims 42 to 45, wherein The battery assembly also includes a battery cell, which includes a shell having a first shell wall. The first shell wall includes a protrusion, at least part of which is located in the accommodating portion, and the height of the protrusion does not exceed 77% of the height of the boss.

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

48. A battery according to any one of claims 42 to 47, wherein The height dimension of the protruding portion does not exceed 94% of the height dimension of the boss.

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

50. A battery according to any one of claims 42 to 49, wherein Part or all of the boss is detachable.

51. The battery according to claim 50, wherein The first box wall includes a box wall body and a mounting plate. The box wall body is provided with a through hole extending therethrough, the through hole being connected to the accommodating cavity, the edge of the through hole is provided with a mounting step extending away from the accommodating cavity, the mounting plate is detachably covered on the mounting step to cover the through hole, the mounting step and the mounting plate together form the boss, and the inner wall of the through hole and the surface of the mounting plate facing the accommodating cavity are arranged to form the accommodating portion.

52. A battery according to any one of claims 1 to 51, wherein The battery includes a first adhesive layer adhered between an inner wall of the accommodation cavity and the battery assembly.

53. A battery according to any one of claims 3 to 52, wherein: The battery comprises a first adhesive layer, the receiving portion is located at the top side of the receiving box in the height direction, the top wall of the battery cell in the height direction of the receiving cavity is the first shell wall, and the first adhesive layer is adhered between the top inner wall of the receiving cavity in the height direction of the receiving cavity and the first shell wall; And / or, the first adhesive layer is adhered between the bottom inner wall of the accommodating cavity along the height direction of the accommodating cavity and the bottom wall of the battery cell along the height direction of the accommodating cavity.

54. A battery according to any one of claims 1 to 53, wherein The battery includes a temperature control component, and the temperature control component is sandwiched between the inner wall of the accommodating cavity and the battery component.

55. The battery according to claim 54, wherein The temperature control component 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 component 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; And / or, the temperature control component 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.

57. A battery according to any one of claims 54 to 56, wherein The battery includes 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 component; And / or, the battery comprises a third adhesive layer, wherein the third adhesive layer is adhered between an inner wall of the accommodating cavity and an outer surface of the battery assembly.

58. An electrical device, wherein: The electrical device comprises the battery described in any one of claims 1 to 57, and the battery serves as a power source for the electrical device.

59. The electrical device according to claim 58, wherein: The electrical device is a vehicle, which includes a seat and the battery according to any one of claims 42 to 57, and the boss is located on a side of the housing box facing the seat.

60. The electrical device according to claim 59, wherein: The vehicle includes a body member, the bottom side of the body member is open, the battery is arranged at the open position of the body member to enclose together with the body member to form a passenger space, and the seat is located in the passenger space.

61. The electrical device according to claim 60, wherein: The vehicle comprises a chassis, the vehicle body is arranged on the chassis, the chassis comprises the battery, and the first box wall forms a floor of the passenger space.

62. The electrical device according to any one of claims 59 to 61, wherein: In a projection perpendicular to the vertical direction, a partial or complete projection of the boss is located within the projection range of the seat.

63. The electrical device according to any one of claims 59 to 62, wherein: The number of the seats is plural and they are spaced to form at least one row, and the seats in the same row are spaced to form a first gap along the width direction of the vehicle, and the bosses include a first boss, and part or all of the first boss is located in the first gap.

64. The electrical device according to claim 63, wherein: The plurality of seats are divided into at least two rows spaced apart along the length direction of the vehicle, and the first boss extends along the length direction of the vehicle to below another adjacent row of seats.

65. The electrical device according to any one of claims 59 to 64, wherein: The boss includes a second boss extending along the length direction of the vehicle and located at one side of the seat along the width direction of the vehicle.

66. The electrical device according to claim 65, wherein: The number of the second bosses is two, the two second bosses are respectively located at one end of the battery along the width direction of the vehicle, and the seat is located between the two second bosses.

67. The electrical device according to claim 65, wherein: The second boss and the seat are spaced apart in the width direction of the vehicle; And / or, part of the second boss is located below the seat.

68. The electrical device according to any one of claims 59 to 67, wherein: The bosses include one or more third bosses extending in a width direction of the vehicle, and at least a portion of the third bosses is located below the seats in the same row.

69. The electrical device according to any one of claims 59 to 68, wherein: The seat comprises a seat, at least a portion of the seat is spaced 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 from the seat along a vertical direction.

70. The electrical device according to claim 69, wherein: The chair comprises a support leg, the seat and the battery are spaced apart in a vertical direction to form the second gap, and the support leg is connected between the seat and the battery.

71. The electrical device according to claim 70, wherein: There are a plurality of the supporting legs, and the plurality of the supporting legs are arranged at intervals along the width direction of the vehicle. Part or all of the boss is located between two adjacent supporting legs along the width direction of the vehicle.

72. The electrical device according to any one of claims 69 to 71, wherein: The seat includes a cushion pad, and the boss is embedded in the cushion pad to support the seat in a height direction of the vehicle.

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