Batteries and power-consuming devices

Abstract

This application provides a battery and a power consumption device, the battery comprising a battery cell, a first housing and a second housing, the first housing comprising a first sealing surface and the second housing comprising a first surface and a second sealing surface, the first surface being used to mount the battery cell, the first housing and the second housing together forming a sealed space for housing the battery cell, the first sealing surface and the second sealing surface fitting together to seal the sealed space, the first sealing surface intersecting the first surface and the second sealing surface intersecting the first surface, thereby reducing the space occupied by the first sealing surface and the second sealing surface in a direction parallel to the first surface and intersecting the first sealing surface and the second sealing surface, thereby improving the space utilization rate of the battery in this direction parallel to the first surface and intersecting both the first and second sealing surfaces, allowing for the housing of more battery cells or reducing the volume of the battery, and further improving the volumetric energy density of the battery.

Description

Cross-Reference to Related Applications

[0001] This application claims priority to Chinese Patent Application No. 202311027215.8, entitled "Battery and Power Consumption Device", filed on August 15, 2023, the entire content of which is incorporated herein by reference. Technical Field

[0002] The present application relates to the field of battery technology, and in particular, to a battery and a power consuming device. Background Art

[0003] Batteries are widely used in fields such as electronic equipment, transportation, power tools, drones, and energy storage equipment. As application environments and conditions become increasingly complex, requirements for the energy density of batteries are becoming higher. Summary of the Invention

[0004] Embodiments of the present application provide a battery and a power consuming device for improving the energy density of the battery.

[0005] According to a first aspect, embodiments of the present application provide a battery, the battery comprising a battery cell, a first housing, and a second housing, the first housing comprising a first sealing surface, the second housing comprising a first surface and a second sealing surface, the first surface being used for carrying the battery cell, the first housing and the second housing together enclosing to form a sealed space for accommodating the battery cell, the first sealing surface and the second sealing surface being fitted to seal the sealed space, the first sealing surface intersecting the first surface, and the second sealing surface intersecting the first surface.

[0006] In the above proposed technology, both the first and second sealing surfaces intersect the first surface; that is, the first sealing surface is not parallel to the first surface, and the second sealing surface is not parallel to the first surface. Compared to the case where both the first and second sealing surfaces are parallel to the first surface for the same sealing width, the fact that both the first and second sealing surfaces intersect the first surface reduces the space occupied by the first and second sealing surfaces in the direction parallel to the first surface and intersecting the first and second sealing surfaces. This improves the space utilization rate of the battery in the direction parallel to the first surface and intersecting both the first and second sealing surfaces, allowing for the inclusion of more battery cells or a reduction in the battery volume, and further improving the volumetric energy density of the battery.

[0007] In some embodiments of the first aspect of this application, at least one of the first sealing surface and the second sealing surface is perpendicular to the first surface.

[0008] In the above-described technology, at least one of the first sealing surface and the second sealing surface is perpendicular to the first surface, and the space occupied in the direction parallel to the first surface and intersecting the first and second sealing surfaces of the one of the two sealing surfaces perpendicular to the first surface can be reduced. As a result, the one of the two sealing surfaces perpendicular to the first surface can make full use of the space in the direction perpendicular to the first surface, which is advantageous for improving the volumetric energy density of the battery.

[0009] In some embodiments of the first aspect of this application, one of the first sealing surface and the second sealing surface is perpendicular to the first surface, and the other of the first sealing surface and the second sealing surface is not perpendicular to the first surface and intersects it.

[0010] In the above proposed technology, one of the first sealing surface and the second sealing surface is perpendicular to the first surface, while the other is not perpendicular to the first surface and intersects it. This reduces the space occupied by the first and second sealing surfaces in the direction parallel to the first surface and intersecting them, thereby improving the space utilization rate of the battery in the direction parallel to the first surface and intersecting both the first and second sealing surfaces. This allows for the accommodating of more battery cells or a reduction in the battery's volume, further improving the battery's volumetric energy density. Additionally, the space perpendicular to the first surface can be fully utilized, further improving the battery's volumetric energy density.

[0011] In some embodiments of the first aspect of this application, of the first sealing surface and the second sealing surface, one perpendicular to the first surface is located on the side away from the sealed space.

[0012] In the above proposed technology, one of the first sealing surface and the second sealing surface perpendicular to each other on the first surface is located away from the other sealed space, while the other of the first sealing surface and the second sealing surface intersecting the first surface non-perpendicular to each other is installed close to the sealed space. This allows for full utilization of the internal space of the housing formed by the first and second housings, which is advantageous for reducing the external size of the battery and improving the volumetric energy density of the battery.

[0013] In some embodiments of the first aspect of this application, the second sealing surface is perpendicular to the first surface and is located on the side of the first sealing surface away from the sealed space.

[0014] In the above proposed technology, the second sealing surface is perpendicular to the first surface, and the second sealing surface is located away from the sealed space of the first sealing surface. This allows the second sealing surface to utilize the space in the direction perpendicular to the first surface, and further facilitates the assembly of the first housing and the second housing.

[0015] In some embodiments of a first aspect of the present application, the first housing includes a first end wall and a first side wall connected to each other, the first sealing surface being located on the first side wall, and the second housing includes a second end wall and a second side wall connected to each other, the second end wall having the first surface and being located opposite the first end wall in a first direction, the first direction being perpendicular to the first surface, and the second sealing surface being located on the second side wall.

[0016] In the above proposed design, the first housing includes a first end wall and a first side wall connected to each other, and the second housing includes a second end wall and a second side wall connected to each other. The first and second housings can easily surround each other to form a sealed space for housing a battery cell. The first sealing surface is located on the first side wall, and the second sealing surface is located on the second side wall. As a result, the area of ​​the first and second sealing surfaces is relatively large, allowing for a good connection and good sealing performance between them. The battery has relatively high reliability, and furthermore, the structure of the first and second housings is simple and easy to manufacture.

[0017] In some embodiments of the first aspect of this application, the first sealing surface is not perpendicular to and intersects the first surface, and the first sidewall is connected to the first endwall at an obtuse angle, or the second sealing surface is not perpendicular to and intersects the first surface, and the second sidewall is connected to the second endwall at an obtuse angle.

[0018] In the above proposed design, the first side wall is connected to the first end wall at an obtuse angle, thereby the first sealing surface intersects the first surface non-perpendicularly, facilitating the filling of sealant or installation of a gasket in the space between the first and second sealing surfaces, which is advantageous for forming a reliable sealing relationship between the first and second housings. The second side wall is connected to the second end wall at an obtuse angle, thereby the second sealing surface intersects the first surface non-perpendicularly, facilitating the filling of sealant or installation of a gasket in the space between the first and second sealing surfaces, which is advantageous for forming a reliable sealing relationship between the first and second housings.

[0019] In some embodiments of the first aspect of this application, the first sealing surface and the second sealing surface together form an adhesive-containing space for containing a sealant.

[0020] In the above proposed technology, the first sealing surface and the second sealing surface together form an adhesive containment space for accommodating sealant. By installing the sealant within the adhesive containment space, the sealing performance for the sealed space can be improved. Furthermore, by bonding the first sealing surface and the second sealing surface with sealant, the connection stability between the first housing and the second housing can be improved. When bonding the first sealing surface and the second sealing surface with sealant, it is not necessary to install other connecting members to connect the first housing and the second housing, thus reducing the steps in battery assembly and saving costs.

[0021] In some embodiments of the first aspect of this application, the projection is made along the first direction, and the projection of the adhesive containment space overlaps at least partially with the projection of the battery cell.

[0022] In the above technical solution, when projected along the first direction, the projection of the adhesive accommodating space at least partially overlaps with the projection of the battery cell. The adhesive accommodating space can occupy as little space as possible in the direction parallel to the first surface, and fully utilizes the space in the direction perpendicular to the first surface. Under the condition that the adhesive accommodating space occupies as little space as possible in the direction parallel to the first surface, it has a relatively large sealing area, and improves the sealing performance between the first sealing surface and the second sealing surface, thereby enabling the battery to have relatively high reliability.

[0023] In some embodiments of the first aspect of the present application, the battery further comprises an adhesive blocking structure, and the adhesive blocking structure is provided at a junction between the sealed space and the adhesive accommodating space.

[0024] In the above technical solution, the adhesive blocking structure is provided at the junction between the sealed space and the adhesive accommodating space. The adhesive blocking structure can restrict the sealant disposed in the adhesive accommodating space from overflowing into the sealed space or overflowing out of the sealed space, reduce waste of the sealant, further enable the battery to have relatively good sealing performance, and is beneficial to improving the sealing reliability of the battery.

[0025] In some embodiments of the first aspect of the present application, the adhesive blocking structure is provided on the second side wall.

[0026] In the above technical solution, the adhesive blocking structure is provided on the second side wall, which reduces the risk of interference between the adhesive blocking structure and the battery cell.

[0027] In some embodiments of the first aspect of the present application, the adhesive blocking structure is a first protrusion protruding from an inner surface of the second side wall, and the first housing is supported by the first protrusion.

[0028] In the above technical solution, the adhesive blocking structure is a first protrusion convexly provided on the inner surface of the second side wall, which can prevent the sealant in the adhesive accommodating space from overflowing into the sealed space, further support the first housing, and limit the first housing to move in a direction approaching the second housing, thereby enabling the sealed space to maintain a relatively large size.

[0029] In some embodiments of the first aspect of the present application, the adhesive blocking structure is a concave groove provided on the inner surface of the second side wall, and a portion of the first housing is located in the concave groove.

[0030] In the above technical solution, the adhesive blocking structure is a concave groove provided on the inner surface of the second side wall, which can prevent the sealant in the adhesive accommodating space from overflowing into the sealed space, and further reduce the weight of the second housing, and such an adhesive blocking structure does not interfere with the structure in the sealed space.

[0031] In some embodiments of the first aspect of the present application, the second side wall is bent from an end of the second end wall along the first direction to a side away from the battery cell to form a concave portion, and the first side wall is inserted into the concave portion; alternatively, the first side wall is bent from an end of the first end wall along the first direction to a side away from the battery cell to form a concave portion, and the second side wall is inserted into the concave portion, and the concave portion is used for accommodating sealant.

[0032] In the above technical solution, the second side wall is bent from the end of the second end wall along the first direction to the side away from the battery cell to form a concave portion, which can form the concave portion on the basis of not reducing the strength of the second side wall; the first side wall is inserted into the concave portion, which achieves a stopping effect on the first side wall and can improve the fitting stability between the first housing and the second housing.

[0033] In some embodiments of the first aspect of the present application, when projected along the first direction, the projection of the concave portion at least partially overlaps the projection of the battery cell.

[0034] In the above proposed technology, the projection is made along the first direction, and the projection of the recess overlaps at least partially with the projection of the battery cell, allowing the battery cell to make full use of the sealed space, thereby improving the energy density of the battery cell. The battery cell can also serve to prevent the sealant in the recess from overflowing into the sealed space.

[0035] In some embodiments of the first aspect of this application, the first sealing surface and the second sealing surface are both perpendicular to the first surface.

[0036] In the above proposed technology, both the first and second sealing surfaces are perpendicular to the first surface. Compared to the case where both the first and second sealing surfaces are parallel to the first surface, the space occupied by both the first and second sealing surfaces in the direction parallel to the first surface and intersecting the first and second sealing surfaces is minimized. As a result, the first and second sealing surfaces make full use of the space in the direction perpendicular to the first surface, thereby improving the space utilization rate of the battery in the direction parallel to the first surface and intersecting the first and second sealing surfaces, allowing for the accommodation of more battery cells or reducing the volume of the battery, and further improving the volumetric energy density of the battery.

[0037] In some embodiments of a first aspect of the present application, the first housing includes a first end wall and a first side wall connected to each other, the first sealing surface being located on the first side wall, and the second housing includes a second end wall and a second side wall connected to each other, the second end wall having the first surface and being located opposite the first end wall in a first direction, the first direction being perpendicular to the first surface, and the second sealing surface being located on the second side wall.

[0038] In the above proposed design, the first housing includes a first end wall and a first side wall connected to each other, and the second housing includes a second end wall and a second side wall connected to each other. The first and second housings can easily surround each other to form a sealed space for housing a battery cell. The first sealing surface is located on the first side wall, and the second sealing surface is located on the second side wall. As a result, the area of ​​the first and second sealing surfaces is relatively large, allowing for a good connection and good sealing performance between them. The battery has relatively high reliability, and furthermore, the structure of the first and second housings is simple and easy to manufacture.

[0039] In some embodiments of the first aspect of this application, a sealant is filled between the first sealing surface and the second sealing surface.

[0040] In the above proposed technology, sealant is filled between the first sealing surface and the second sealing surface, improving the sealing performance for the enclosed space. Furthermore, by bonding the first sealing surface and the second sealing surface with sealant, the connection stability between the first housing and the second housing can be improved. When bonding the first sealing surface and the second sealing surface with sealant, it is not necessary to install other connecting members to connect the first housing and the second housing, reducing the steps in battery assembly and saving costs.

[0041] In some embodiments of the first aspect of this application, the projection is along a second direction, the projection of the sealant at least partially overlapping with the projection of the battery cell, and the second direction is parallel to the first surface and intersects the first side wall.

[0042] In the above proposed technology, the projection is along a second direction, and the projection of the sealant at least partially overlaps with the projection of the battery cell, reducing the space occupied in other directions that intersect with the second direction of the sealant. This allows the sealant to make full use of the space in the second direction of the battery, thereby advantageous in improving the energy density of the battery.

[0043] In some embodiments of the first aspect of this application, the battery further includes an adhesive blocking structure, which is positioned in proximity to the first sealing surface and the second sealing surface of the sealed space.

[0044] In the above proposed technology, an adhesive blocking structure is installed at a position close to the first and second sealing surfaces of the sealed space. The adhesive blocking structure can limit the overflow of sealant installed in the adhesive containment space into the sealed space, thereby reducing sealant waste and allowing the battery to have relatively good sealing performance, which is advantageous in improving the sealing reliability of the battery.

[0045] In some embodiments of the first aspect of this application, the adhesive blocking structure is installed on the first surface.

[0046] In the above proposed technology, the adhesive blocking structure is installed on the first surface, facilitating the installation of the adhesive blocking structure.

[0047] In some embodiments of the first aspect of this application, the adhesive blocking structure is a second projection protruding from the first surface, and a portion of the first housing is located between the second side wall and the second projection.

[0048] In the above proposed technology, the adhesive blocking structure is a second projection that protrudes from the first surface, a portion of the first housing is located between the second side wall and the second projection, the second projection can prevent the sealant between the first sealing surface and the second sealing surface from overflowing into the sealed space, and the second projection can further restrict the first housing to deform along a direction away from the second side wall, thereby maintaining a relatively large size in the sealed space and reducing the risk of interference with the structure in the sealed space as the first housing deforms along a direction away from the second side wall.

[0049] In some embodiments of the first aspect of the application, the first housing includes a first end wall and a first side wall connected to each other, the first sealing surface being mounted on the first side wall, the second housing includes a second end wall, the first end wall and the second end wall are positioned opposite each other in a first direction, the first direction being perpendicular to the first surface, a housing groove being provided in the second end wall, the second sealing surface being mounted on the groove wall of the housing groove, the first side wall being inserted into the housing groove and the housing groove being filled with sealant.

[0050] In the above proposed technology, the first side wall is inserted into the housing groove and can act as a stopper against the first side wall, and can further restrict the first side wall from deforming in the direction of deformation of the sealed space or away from the sealed space, and the housing groove is filled with sealant to improve sealing performance, and the sealant can further connect the first housing and the second housing within the housing groove, eliminating the need to install other connecting members to connect the first housing and the second housing, thereby reducing the steps in battery assembly and saving costs.

[0051] In some embodiments of the first aspect of this application, the projection is made along the first direction, and the projection of the housing groove overlaps at least partially with the projection of the battery cell.

[0052] In the above proposed technology, the projection is made along the first direction, and the projection of the housing groove at least partially overlaps with the projection of the battery cell, allowing the battery cell to make full use of the sealed space, thereby improving the energy density of the battery cell. The battery cell can also serve to prevent the sealant in the housing groove from overflowing into the sealed space.

[0053] According to a second aspect, embodiments of the present application provide a power-consuming device, which includes a battery according to any of the above embodiments.

[0054] In the above proposed technology, the power consumption device employs a battery with a relatively high energy density, as described above, and therefore has a relatively long operating range, meeting a greater power consumption demand. [Brief explanation of the drawing]

[0055] To more clearly illustrate the technical concept of the embodiments of this application, the following is a brief introduction to the drawings that may be used in the embodiments. It should be understood that the following drawings only show a few embodiments of this application and should not be considered limiting to the scope. Those skilled in the art can also obtain other relevant drawings based on these drawings without expending any creative effort. [Figure 1] This is a schematic diagram of a vehicle according to some embodiments of this application. [Figure 2] This is an exploded view of a battery according to some embodiments of this application. [Figure 3] This is a schematic diagram showing the first and second housings after they have been fitted together according to some embodiments of this application. [Figure 4] Figure 3 is a schematic diagram showing that sealant is filled between the first sealing surface and the second sealing surface. [Figure 5] This is a schematic diagram showing the first and second housings after they have been fitted together according to some other embodiments of the present application. [Figure 6] Figure 5 is a schematic diagram showing that sealant is filled between the first sealing surface and the second sealing surface. [Figure 7] This is a schematic diagram showing the first and second housings after they have been fitted together according to some further embodiments of the present application. [Figure 8] Figure 7 is a schematic diagram showing that sealant is filled between the first sealing surface and the second sealing surface. [Figure 9] This is a cross-sectional view of a battery according to several embodiments of this application. [Figure 10] This is a cross-sectional view of a battery according to some other embodiments of the present application. [Figure 11]This is a schematic diagram showing the first and second housings after they have been fitted together, according to some other embodiments of this application. [Figure 12] This is a cross-sectional view of a battery according to some further embodiments of the present application. [Figure 13] Figure 11 shows an enlarged view of D1. [Figure 14] This is a cross-sectional view of a battery according to some further embodiments of the present application. [Figure 15] Figure 14 shows an enlarged view of D2. [Figure 16] This is a schematic diagram showing the first and second housings after they have been fitted together according to some further embodiments of the present application. [Figure 17] Figure 16 is a schematic diagram showing that sealant is filled between the first sealing surface and the second sealing surface. [Figure 18] This is a schematic diagram showing the first and second housings after they have been fitted together, according to several other embodiments. [Figure 19] Figure 18 is a schematic diagram showing that sealant is filled between the first sealing surface and the second sealing surface. [Figure 20] This is a schematic diagram showing the first and second housings after they have been fitted together, according to several other embodiments. [Figure 21] Figure 20 is a schematic diagram showing that sealant is filled between the first sealing surface and the second sealing surface. [Figure 22] This is a cross-sectional view of a battery according to some further embodiments of the present application. [Figure 23] The following are schematic diagrams showing the first and second housings after they have been fitted together, according to several further embodiments. [Figure 24] This is a schematic diagram showing the first and second housings after they have been fitted together, according to several other embodiments. [Modes for carrying out the invention]

[0056] To clarify the purpose, technical proposal, and advantages of the embodiments of this application, the following clearly and completely describes the technical proposal of the embodiments of this application, linking it with the drawings of the embodiments. Clearly, the embodiments described are some, but not all, embodiments of this application. Generally, the assemblies of the embodiments of this application described and shown in the drawings herein can be arranged and designed in a variety of different configurations.

[0057] Therefore, the detailed descriptions of the embodiments of this application provided below in the drawings are not intended to limit the scope of protection of this application, but merely to represent selected embodiments of this application. All other embodiments derived from the embodiments of this application without the creative effort of a person skilled in the art are all within the scope of protection of this application.

[0058] As to explain, the embodiments and features in this application can be combined with each other, provided they do not conflict.

[0059] It should be noted that similar symbols and letters represent similar terms in subsequent drawings; therefore, once a term is defined in one drawing, it does not need to be further defined or interpreted in subsequent drawings.

[0060] In describing the embodiments of this application, the indicated orientations or positional relationships are those shown based on the drawings, or those commonly placed when using the product of this application, or those generally understood by those skilled in the art. They are merely for the convenience and simplification of the description in this application and do not indicate or imply that the mentioned devices or elements have a specific orientation or must be configured and operated in a specific orientation. Therefore, they should not be considered as limitations on this application. Furthermore, terms such as "first," "second," and "third" are merely used to distinguish between descriptions and should not be understood as indicating or implying relative importance.

[0061] Currently, given the development of the market, the applications of power batteries are expanding more and more. Power batteries are used in energy storage and power systems such as hydroelectric, thermal, wind, and solar power plants, as well as in electric transportation such as electric bicycles, electric motorcycles, and electric vehicles, and in multiple fields such as military equipment and aerospace. As the application fields of power batteries continue to expand, the market demand for them will also continue to increase.

[0062] The batteries referred to in the embodiments of this application refer to a single physical module containing one or more battery cells to provide higher voltage and capacity. For example, the batteries referred to in this application may include a battery module or a battery pack. The batteries generally include a housing for packaging one or more battery cells. The housing can reduce the risk of liquids or other foreign matter affecting the charging or discharging of the battery cells.

[0063] As used in this application, "multiple" refers to two or more (including two).

[0064] In the embodiments of this application, the battery cell may be a secondary battery, and a secondary battery refers to a battery cell that can be used continuously by activating the active material through a charging method after the battery cell has been discharged.

[0065] The battery cell may be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited thereto.

[0066] The battery cell may include an electrode assembly. The electrode assembly may include a positive electrode, a negative electrode, and a separator. During the charging and discharging process of the battery cell, active ions (e.g., lithium ions) intercept and deintercept between the positive and negative electrodes. The separator is placed between the positive and negative electrodes and can reduce the risk of short circuits between the positive and negative electrodes while allowing active ions to pass through.

[0067] In some embodiments, the battery cell may further contain an electrolyte that conducts ions between the positive and negative electrodes. The electrolyte may be liquid, gel-like, or solid. Here, the liquid electrolyte may contain an electrolyte salt and a solvent. The solid electrolyte may contain a polymer solid electrolyte, an inorganic solid electrolyte, or a composite solid electrolyte.

[0068] In some embodiments, the electrode assembly may be a wound structure. The positive and negative plates are wound into a wound structure.

[0069] In some embodiments, the shape of the electrode assembly may be cylindrical.

[0070] In some embodiments, the electrode assembly is provided with tabs that allow current to be drawn from the electrode assembly. The tabs include a positive tab and a negative tab.

[0071] In some embodiments, the battery cell may include a housing. The housing is used to package components such as electrode assemblies and electrolytes. The housing may be a steel case, an aluminum case, a plastic case (e.g., polypropylene), a composite metal case (e.g., a copper-aluminum composite housing), or an aluminum-plastic film.

[0072] For example, the battery cell may be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of any other shape.

[0073] The batteries referred to in the embodiments of this application refer to a single physical module comprising one or more battery cells to provide higher voltage and capacity.

[0074] In some embodiments, the battery may be a battery module, and if there are multiple battery cells, the multiple battery cells are arranged and fixed together to form a single battery module.

[0075] In some embodiments, the battery may be a battery pack, which includes a housing and battery cells, the battery cells or battery modules being housed within the housing. The housing may include a first housing and a second housing, the first housing being connected to the second housing to enclose them together and form a sealed space. The second housing has a first surface, which is used for mounting the battery cells, the battery cells being placed within the sealed space to reduce the risk of liquid or other foreign matter affecting the charging or discharging of the battery cells.

[0076] In some embodiments, the housing can be part of the vehicle's chassis structure. For example, part of the housing can be at least part of the vehicle's floor, or part of the housing can be at least part of the vehicle's cross members and side members.

[0077] In some embodiments, the battery may be an energy storage device. The energy storage device may include an energy storage container, an energy storage electrical cabinet, and the like.

[0078] The battery housing includes a first housing and a second housing, which are engaged with each other to form a sealed space for housing battery cells, and the space between the first housing and the second housing is sealed by a seal connection. In related technologies, flange structures (generally protruding in a direction parallel to the surface on which the battery cells are mounted) are installed on the edges of both the first and second housings, forming one sealing surface, and the flange structure of the first housing forms one sealing surface, and both sealing surfaces are parallel to the surface on which the battery cells are mounted, and the sealing interface formed by the sealing surface of the flange structure of the first housing and the sealing surface of the flange structure of the second housing is also parallel to the surface on which the battery cells are mounted, but the protruding flange structures occupy space in the direction parallel to the first surface, causing a low space utilization rate of the battery and affecting the volumetric energy density of the battery.

[0079] Based on the above considerations, in order to improve the problem that sealing is achieved by forming a flange structure on the edges of the first housing and the second housing, and that the flange structure occupies extra space, resulting in low space utilization of the battery and affecting the energy density of the battery, an embodiment of the present application provides a battery, the battery comprising a battery cell, a first housing and a second housing, the first housing comprising a first sealing surface, the second housing comprising a first surface and a second sealing surface, the first surface being used for mounting the battery cell, the first housing and the second housing together enclosing and forming a sealed space for housing the battery cell, the first sealing surface and the second sealing surface fitting together to seal the sealed space, the first sealing surface intersecting the first surface and the second sealing surface intersecting the first surface.

[0080] Both the first and second sealing surfaces intersect the first surface; that is, the first sealing surface is not parallel to the first surface, and the second sealing surface is not parallel to the first surface. Compared to the case where both the first and second sealing surfaces are parallel to the first surface for the same sealing width, the fact that both the first and second sealing surfaces intersect the first surface reduces the space occupied by the first and second sealing surfaces in the direction parallel to the first surface and intersecting the first and second sealing surfaces. This improves the space utilization rate of the battery in the direction parallel to the first surface and intersecting both the first and second sealing surfaces, allowing for the inclusion of more battery cells or a reduction in the battery's volumetric energy density.

[0081] The batteries disclosed in the embodiments of this application can be used in battery cabinets, container-type energy storage devices, and the like, but are not limited to these. The energy storage device may include multiple batteries disclosed in this application.

[0082] The batteries disclosed in the embodiments of this application can be used in power-consuming devices such as vehicles, ships, or aircraft, but are not limited to these applications. A power supply system comprising such a power-consuming device comprising the batteries disclosed in this application can be used.

[0083] Embodiments of this application provide a power consumption device that uses a battery as a power source, and the power consumption device may be, but is not limited to, a mobile phone, tablet PC, laptop computer, electric toy, power tool, electric bicycle, electric motorcycle, electric car, steamship, large truck, large bus, or spacecraft. Here, electric toys may include stationary or mobile electric toys, such as game consoles, electric car toys, electric steamship toys and electric airplane toys, and spacecraft may include airplanes, rockets, space shuttles and spacecraft.

[0084] The following embodiments will be described using a vehicle as an example of one embodiment of this application, for the sake of clarity.

[0085] Referring to Figure 1, which is a schematic diagram of a vehicle 1000 according to several embodiments of the present application, the vehicle 1000 may be a fuel oil vehicle, a gas vehicle, or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, or a range extender vehicle. The type of vehicle 1000 may be a sedan, an off-road vehicle, a heavy truck, or a heavy bus. A battery 100 is installed inside the vehicle 1000, and the battery 100 may be installed at the bottom, front, or rear of the vehicle 1000. The battery 100 may be used to power the vehicle 1000, for example, as an operating power source for the vehicle 1000, and may be used in the circuit system of the vehicle 1000, for example, to start the vehicle 1000, navigation, and to meet the operating power consumption requirements during operation.

[0086] The vehicle 1000 may further include a controller 200 and a motor 300, the controller 200 being used to control the battery 100 to supply power to the motor 300, for example, to meet the power consumption requirements for starting the vehicle 1000, navigation, and driving.

[0087] In some embodiments of this application, the battery 100 can serve as an operating power source for the vehicle 1000, and can also serve as a driving power source for the vehicle 1000, providing driving power to the vehicle 1000 in place of or in place of fuel oil or natural gas.

[0088] As shown in Figures 2, 3, and 4, some embodiments of the present application provide a battery 100, the battery 100 comprising a battery cell 10, a first housing 20, and a second housing 30, the first housing 20 comprising a first sealing surface 21, and the second housing 30 comprising a first surface 31 and a second sealing surface 32, the first surface 31 being used to mount the battery cell 10, the first housing 20 and the second housing 30 together enclosing and forming a sealed space A for housing the battery cell 10, the first sealing surface 21 and the second sealing surface 32 fitting together to seal the sealed space A, the first sealing surface 21 intersecting the first surface 31, and the second sealing surface 32 intersecting the first surface 31.

[0089] The first housing 20 and the second housing 30 together form the housing of the battery 100. The battery cells 10 are housed in a sealed space A defined by the first housing 20 and the second housing 30. The battery 100 may contain one or more battery cells 10. In embodiments in which the battery 100 contains multiple battery cells 10, the connections between the multiple battery cells 10 may be in series, parallel, or series-parallel, where series-parallel connection refers to the presence of series or parallel connections on the brackets of the multiple battery cells 10.

[0090] The second housing 30 has a first surface 31 for mounting the battery cell 10, and the use of the first surface 31 for mounting the battery cell 10 may be understood as the surface on which the second housing 30 rests the battery cell 10, or the surface on which the second housing 30 receives the main gravitational force of the battery cell 10. The second housing 30 may be considered as the main part on which the battery cell 10 is mounted. For example, the second housing 30 can be the lower housing of the battery 100, and the surface of the bottom wall of the lower housing facing the battery cell 10 may be the first surface 31. The first housing 20 may be considered as the upper housing of the battery 100. The first housing 20 and the second housing 30 are placed on top of each other in a first direction X to define a sealed space A.

[0091] In some embodiments, the materials of the first housing 20 and the second housing 30 may be aluminum, aluminum alloy, stainless steel, or plastic, respectively. The materials of the first housing 20 and the second housing 30 may be the same or different.

[0092] In some embodiments, the second housing 30, as a component for mounting the main battery cell 10, can be manufactured from a material with relatively high structural strength, such as an aluminum alloy, steel, or other material with relatively high structural strength, while the first housing 20 can be manufactured from a material with relatively low density, such as plastic, so that the mass of the first housing 20 does not affect the mass energy density of the battery 100 as much as possible, and is also advantageous in reducing the weight of the battery 100.

[0093] The first housing 20 and the second housing 30 are used to provide a sealed space A for the battery cell 10. In some embodiments, the first housing 20 and the second housing 30 are placed over each other to define a sealed space A for housing the battery cell 10. Of course, the connection point between the first housing 20 and the second housing 30 can be sealed via a sealing member (not shown), which may be a sealing ring, gasket, sealant 40, etc.

[0094] The first housing 20 and the second housing 30 may have various shapes, such as a rectangular parallelepiped or a cylindrical shape. The first housing 20 may be a hollow structure in which a housing cavity for housing the battery cell 10 is formed at an opening on one side, and the second housing 30 may be a hollow structure in which a housing cavity for housing the battery cell 10 is formed at an opening on one side, and the opening side of the first housing 20 is placed over the opening side of the second housing 30 to form a housing having a sealed space A. Of course, the first housing 20 may be a hollow structure in which a housing cavity for housing the battery cell 10 is formed at an opening on one side, and the second housing 30 may be a plate-like structure, and the second housing 30 is placed over the opening side of the first housing 20 to form a housing having a sealed space A. Of course, the second housing 30 may be a hollow structure in which a housing cavity for accommodating the battery cell 10 is formed in the opening on one side, and the first housing 20 is a plate-like structure, and the first housing 20 is placed over the opening side of the second housing 30 to form a housing having a sealed space A.

[0095] The first sealing surface 21 is the surface of the first housing 20 for sealing connection with the second housing 30. The second sealing surface 32 is the surface of the second housing 30 for forming a sealing interface that seals the sealed space A together with the first sealing surface 21 of the first housing 20. The first sealing surface 21 and the second sealing surface 32 fit together to achieve a seal to the sealed space A, thereby reducing the risk of interference from the external environment to the battery cells 10 in the sealed space A, allowing the battery 100 to operate normally and improving the reliability of the battery 100.

[0096] There are various methods for forming a seal connection between the first seal surface 21 and the second seal surface 32. For example, the first housing 20 and the second housing 30 can be welded together to the first seal surface 21 and the second seal surface 32, thereby achieving a seal connection. Alternatively, a gasket can be sandwiched between the first seal surface 21 and the second seal surface 32, and the first housing 20 and the second housing 30 can be locked together via a connecting member, thereby stably sandwiching the gasket between the first seal surface 21 and the second seal surface 32 and achieving a seal. Furthermore, a sealant 40 can be filled between the first seal surface 21 and the second seal surface 32, and the sealant 40 can be used to bond the first seal surface 21 and the second seal surface 32, thereby achieving a seal.

[0097] "The first sealing surface 21 intersects the first surface 31" does not only mean that the first sealing surface 21 directly intersects the first surface 31, but also that the extended surface of the first sealing surface 21 intersects the extended surface of the first surface 31, or that the plane on which the first sealing surface 21 is located intersects the plane on which the first surface 31 is located. The first sealing surface 21 intersects the first surface 31, in other words, the first sealing surface 21 is not parallel to the first surface 31. The first sealing surface 21 and the first surface 31 may intersect perpendicularly or not perpendicularly. The first sealing surface 21 intersecting the first surface 31 not perpendicularly means that the first sealing surface 21 and the first surface 31 may intersect at an obtuse angle or an acute angle.

[0098] "The second sealing surface 32 intersects the first surface 31" does not only mean that the second sealing surface 32 directly intersects the first surface 31, but also that the extended surface of the second sealing surface 32 intersects the extended surface of the first surface 31, or that the plane on which the second sealing surface 32 is located intersects the plane on which the first surface 31 is located. The second sealing surface 32 intersects the first surface 31, in other words, the second sealing surface 32 is not parallel to the first surface 31. The second sealing surface 32 and the first surface 31 may intersect perpendicularly or not perpendicularly. The second sealing surface 32 intersecting the first surface 31 not perpendicularly means that the second sealing surface 32 and the first surface 31 may intersect at an obtuse angle or an acute angle.

[0099] The first sealing surface 21 and the second sealing surface both intersect the first surface 31. That is, the first sealing surface 21 is not parallel to the first surface 31, and the second sealing surface 32 is not parallel to the first surface 31. Compared to the case where the first sealing surface 21 and the second sealing surface 32 are parallel to the first surface 31 for the same sealing width, the fact that both the first sealing surface 21 and the second sealing surface 32 intersect the first surface 31 reduces the space occupied in the direction parallel to the first surface 31 and intersecting the first sealing surface 21 and the second sealing surface 32. This improves the space utilization rate of the battery 100 in the direction parallel to the first surface 31 and intersecting the first sealing surface 21 and the second sealing surface, allowing for the accommodation of more battery cells 10 or reducing the volume of the battery 100, and further improving the volumetric energy density of the battery 100.

[0100] In some embodiments, at least one of the first sealing surface 21 and the second sealing surface 32 is perpendicular to the first surface 31.

[0101] As shown in Figures 3 to 6, either the first sealing surface 21 or the second sealing surface 32 may intersect the first surface 31 perpendicularly, while the other intersects the first surface 31 not perpendicularly. The first sealing surface 21 may intersect the first surface 31 perpendicularly, while the second sealing surface 32 may intersect the first sealing surface 21 not perpendicularly. The first sealing surface 21 may intersect the first surface 31 not perpendicularly, while the second sealing surface 32 may intersect the first surface 31 perpendicularly.

[0102] The first sealing surface 21 and the second sealing surface 32 may both intersect perpendicularly with the first surface 31.

[0103] At least one of the first sealing surface 21 and the second sealing surface 32 is perpendicular to the first surface 31, and the space occupied in the direction parallel to the first surface 31 and intersecting the first sealing surface 21 and the second sealing surface 32 can be reduced, thereby allowing the one of the first sealing surface 21 and the second sealing surface 32 perpendicular to the first surface 31 to make full use of the space in the direction perpendicular to the first surface 31, which is advantageous for improving the volumetric energy density of the battery 100.

[0104] As shown in Figures 3 to 6, in some embodiments, one of the first sealing surface 21 and the second sealing surface 32 is perpendicular to the first surface 31, and the other of the first sealing surface 21 and the second sealing surface 32 is not perpendicular to the first surface 31 and intersects it.

[0105] In some embodiments, the first sealing surface 21 intersects the first surface 31 perpendicularly, and the second sealing surface 32 may be non-perpendicular to and intersect the first surface 31.

[0106] In some other embodiments, the second sealing surface 32 may intersect the first surface 31 perpendicularly, and the first sealing surface 21 may intersect the first surface 31 non-perpendicularly.

[0107] One of the first sealing surface 21 and the second sealing surface 32 is perpendicular to the first surface 31, and the other is not perpendicular to the first surface 31 and intersects it, thereby reducing the space occupied by the first sealing surface 21 and the second sealing surface 32 in the direction parallel to the first surface 31 and intersecting the first sealing surface 21 and the second sealing surface 32, thereby improving the space utilization rate of the battery 100 in the direction parallel to the first surface 31 and intersecting both the first sealing surface 21 and the second sealing surface, allowing for the accommodation of more battery cells 10 or reducing the volume of the battery 100, further improving the volumetric energy density of the battery 100, further allowing for sufficient use of space in the direction perpendicular to the first surface 31, and further improving the volumetric energy density of the battery 100.

[0108] In an embodiment in which one of the first sealing surface 21 and the second sealing surface 32 intersects the first surface 31 perpendicularly and the other intersects the first surface 31 not perpendicularly, as shown in Figures 3 to 6, one of the first sealing surface 21 and the second sealing surface 32 that is perpendicular to each other with respect to the first surface 31 is located on the side away from the other sealed space A.

[0109] When the first sealing surface 21 intersects the first surface 31 perpendicularly and the second sealing surface 32 intersects the first surface 31 not perpendicularly, the first sealing surface 21 may be further away from the sealed space A than the second sealing surface 32, and the first sealing surface 21 may be located outside the second sealing surface 32.

[0110] When the second sealing surface 32 intersects the first surface 31 perpendicularly and the first sealing surface 21 intersects the first surface 31 not perpendicularly, the second sealing surface 32 is further away from the sealed space A than the first sealing surface 21, and the second sealing surface 32 may be located outside the first sealing surface 21.

[0111] One of the first sealing surface 21 and the second sealing surface 32, perpendicular to each other with respect to the first surface 31, is located on the side away from the other sealed space A, while the other of the first sealing surface 21 and the second sealing surface 32, which intersects the first surface 31 non-perpendicularly, is positioned closer to the sealed space A. This allows for full utilization of the internal space of the housing formed by the first housing 20 and the second housing 30, which is advantageous for reducing the external size of the battery 100 and improving the volumetric energy density of the battery 100.

[0112] In some embodiments, the second sealing surface 32 is perpendicular to the first surface 31 and is located on the side of the first sealing surface 21 away from the sealed space A.

[0113] The second sealing surface 32 intersects the first surface 31 perpendicularly, and the second sealing surface 32 is not perpendicular to the first surface 31.

[0114] The second sealing surface 32 is perpendicular to the first surface 31 and is located away from the sealed space A of the first sealing surface 21, thereby allowing the second sealing surface 32 to utilize the space in the direction perpendicular to the first surface 31, and further facilitating the assembly of the first housing 20 and the second housing 30.

[0115] The installation positions of the first sealing surface 21 and the second sealing surface differ depending on the structure of the first housing 20 and the second housing 30.

[0116] As shown in Figures 3 to 6, in some embodiments, the first housing 20 includes a first end wall 22 and a first side wall 23 connected to each other, with a first sealing surface 21 located on the first side wall 23; the second housing 30 includes a second end wall 33 and a second side wall 34 connected to each other, with the second end wall 33 having a first surface 31 and being located opposite the first end wall 22 along a first direction X, where the first direction X is perpendicular to the first surface 31; and the second sealing surface 32 located on the second side wall 34.

[0117] The first side wall 23 is connected to the end of the first end wall 22 along the second direction Y, and the first side wall 23 extends in a direction approaching the second housing 30 from the first end wall 22.

[0118] The second direction Y is parallel to the first surface 31, the first direction X is perpendicular to the second direction Y, and both the first sealing surface 21 and the second sealing surface 32 can intersect with the second direction Y. In some embodiments, the second direction Y may be the width direction of the battery 100, and the first sealing surface 21 and the second sealing surface 32 may both intersect the first surface 31, the first sealing surface 21 and the second sealing surface 32 may both intersect the second direction Y, and the first sealing surface 21 and the second sealing surface 32 may both intersect the width direction of the battery 100. Compared to the case where the first sealing surface 21 and the second sealing surface 32 are parallel to the first surface 31 (the first sealing surface 21 and the second sealing surface 32 are parallel to the second direction Y) for a similar sealing width, the intersecting of the first sealing surface 21 and the second sealing surface 32 in the second direction Y can reduce the space occupied by the first sealing surface 21 and the second sealing surface 32, thereby improving the space utilization rate of the battery 100 in the second direction Y, allowing for the accommodation of more battery cells 10 or reducing the volume of the battery 100, and further improving the volumetric energy density of the battery 100. The width of the battery 100 is relatively small, which is advantageous for reducing the width of the battery 100 in power-consuming equipment that uses this battery 100 for power supply. For example, if the power-consuming equipment is a large truck, and the large truck is powered by the battery 100 according to the embodiment of this application, the width of the battery 100 in the large truck can be relatively small. Generally, the width of the battery 100 basically coincides with the width of the large truck, meaning that the large truck may have a relatively small width.

[0119] The first housing 20 and the second housing 30 may be considered to overlap each other in the height direction of the battery 100, defining a sealed space A. The height direction of the battery 100 basically coincides with the first direction X. In some embodiments, the height direction of the battery 100 can basically coincide with the height direction of a large truck.

[0120] The first end wall 22 and the first side wall 23 may be integrally molded. The first end wall 22 and the first side wall 23 may be installed separately, and may be further connected to form the first housing 20. The connection method between the first end wall 22 and the first side wall 23 includes, but is not limited to, welding, adhesive, and screw connections.

[0121] The first sealing surface 21 may be at least a portion of the surface of the first side wall 23 facing the sealed space A in the second direction Y, or at least a portion of the surface moving away from the sealed space A.

[0122] The second side wall 34 is connected to the end of the second end wall 33 along the second direction Y, corresponding to the first side wall 23, and the second side wall 34 extends from the second end wall 33 toward the first housing 20.

[0123] The second end wall 33 and the second side wall 34 may be integrally molded. The second end wall 33 and the second side wall 34 may be installed separately, and may be further connected to form the second housing 30. The method of connecting the second end wall 33 and the second side wall 34 includes, but is not limited to, welding, adhesive, and screw connections.

[0124] The surface of the second end wall 33 facing the first end wall 22 in the first direction X is the first surface 31. The second sealing surface 32 may be at least a portion of the surface of the second side wall 34 facing the sealed space A in the second direction Y, or at least a portion of the surface moving away from the sealed space A.

[0125] The first housing 20 includes a first end wall 22 and a first side wall 23 connected to each other, and the second housing 30 includes a second end wall 33 and a second side wall 34 connected to each other. The first housing 20 and the second housing 30 can easily surround each other to form a sealed space A for housing the battery cell 10. The first sealing surface 21 is located on the first side wall 23, and the second sealing surface 32 is located on the second side wall 34. As a result, the area of ​​the first sealing surface 21 and the second sealing surface 32 is relatively large, allowing for a good connection and good sealing performance between them. The battery 100 has relatively high reliability. Furthermore, the structure of the first housing 20 and the second housing 30 is simple and easy to manufacture.

[0126] As shown in Figures 3 to 6, in some embodiments, the first housing 20 includes two first side walls 23, each connected to the ends of a first end wall 22 along the second direction Y. The second housing 30 includes two second side walls 34, each connected to the ends of a second end wall 33 along the second direction Y. A first sealing surface 21 is provided on each first side wall 23, and a second sealing surface 32 is provided on each second side wall 34. The first side walls 23 are installed in a one-to-one correspondence with the second side walls 34, and the first sealing surface 21 is installed in a one-to-one correspondence with the second sealing surface 32. The first sealing surface 21 of each first side wall 23 engages with the corresponding second sealing surface 32 of the second side wall 34 to seal the sealed space A in the second direction Y.

[0127] As shown in Figures 3 to 6, in some embodiments, the first sealing surface 21 is not perpendicular to and intersects the first surface 31, and the first side wall 23 is connected to the first end wall 22 at an obtuse angle, or, as shown in Figures 7 and 8, the second sealing surface 32 is not perpendicular to and intersects the first surface 31, and the second side wall 34 is connected to the second end wall 33 at an obtuse angle.

[0128] As shown in Figures 3 to 6, the first side wall 23 is connected to the first end wall 22 at an obtuse angle, and the first sealing surface 21 intersects the first surface 31 at an acute angle. In embodiments in which the first housing 20 includes two first side walls 23, both first side walls 23 are connected to the first end wall 22 at an obtuse angle, and the two first side walls 23 are arranged in a figure-eight shape.

[0129] As shown in Figures 7 and 8, the second side wall 34 is connected to the second end wall 33 at an obtuse angle, and the second sealing surface 32 intersects the first surface 31 at an obtuse angle. In embodiments in which the second housing 30 includes two second side walls 34, both second side walls 34 are connected to the second end wall 33 at an obtuse angle, and the two second side walls 34 are arranged in an inverted V-shape.

[0130] The first side wall 23 is connected to the first end wall 22 at an obtuse angle, thereby the first sealing surface 21 intersects the first surface 31 non-perpendicularly, facilitating the filling of the space between the first sealing surface 21 and the second sealing surface 32 with sealant 40 or the installation of a gasket, which is advantageous in forming a reliable sealing relationship between the first housing 20 and the second housing 30. The second side wall 34 is connected to the second end wall 33 at an obtuse angle, thereby the second sealing surface 32 intersects the first surface 31 non-perpendicularly, facilitating the filling of the space between the first sealing surface 21 and the second sealing surface 32 with sealant 40 or the installation of a gasket, which is advantageous in forming a reliable sealing relationship between the first housing 20 and the second housing 30.

[0131] As shown in Figures 3 to 6, in an embodiment where the first end wall 22 and the first side wall 23 are arranged at an obtuse angle, the second end wall 33 and the second side wall 34 can be arranged perpendicularly. The second side wall 34 is located on the outside of the first side wall 23, that is, the second side wall 34 is located on the side of the first side wall 23 that is away from the sealed space A. At least a portion of the surface of the first side wall 23 facing the second side wall 34 forms the first sealing surface 21. The surface of the first side wall 23 facing the second side wall 34 is also a surface that is away from the sealed space A of the first side wall 23. At least a portion of the surface of the second side wall 34 facing the first side wall 23 forms the second sealing surface 32. The surface of the second side wall 34 facing the first side wall 23 is also a surface that faces the sealed space A of the second side wall 34.

[0132] As shown in Figures 3 to 8, in some embodiments, the first sealing surface 21 and the second sealing surface 32 together form an adhesive containment space B for containing the sealant 40.

[0133] In an embodiment in which the first side wall 23 and the first end wall 22 are arranged at an obtuse angle, and the second side wall 34 and the second end wall 33 are arranged perpendicularly, the cross-section of the adhesive containment space B formed by the first sealing surface 21 and the second sealing surface 32 may be triangular in structure, thereby forming a relatively large opening at the end of the adhesive containment space B away from the second end wall 33, allowing the adhesive to enter the adhesive containment space B Sealant 40 To facilitate filling.

[0134] The adhesive containment space B can be filled with sealant 40. The sealant 40 may be a sealing material having a certain degree of adhesion, and can further perform functions such as leak prevention, waterproofing, vibration damping, and heat insulation within the adhesive containment space B. The sealant 40 is a silicone sealant. to, Urethane sealant to, Polysulfide sealant to, Acrylic sealant to, Anaerobic sea lantern to, Butyl sealant to, Chloroprene celine to, PVC sealant to, Asphalt sealant Tona Anything is fine.

[0135] The first sealing surface 21 and the second sealing surface 32 together form an adhesive containment space B for containing the sealant 40. By installing the sealant 40 in the adhesive containment space B, the sealing performance against the sealed space A can be improved. Furthermore, by bonding the first sealing surface 21 and the second sealing surface 32 with the sealant 40, the connection stability between the first housing 20 and the second housing 30 can be improved. When bonding the first sealing surface 21 and the second sealing surface 32 with the sealant 40, it is not necessary to install other connecting members to connect the first housing 20 and the second housing 30, thereby reducing the assembly steps of the battery 100 and saving costs.

[0136] In some other embodiments, the space formed between the first sealing surface 21 and the second sealing surface 32 may be used to accommodate additional sealing members (not shown), such as gaskets or sealing rings. The sealing members are sandwiched between the first sealing surface 21 and the second sealing surface 32. The sealing members and the first sealing surface 21 may be in contact or bonded, and the sealing members and the second sealing surface 32 may be in contact or bonded.

[0137] As shown in Figures 9 to 10, in some embodiments, the projection is made along the first direction X, and the projection of the adhesive containment space B overlaps at least partially with the projection of the battery cell 10.

[0138] In embodiments where the first side wall 23 and the first end wall 22 are positioned at an obtuse angle, and the second side wall 34 and the second end wall 33 are perpendicular, at least a portion of the adhesive containment space B can extend away from the first surface 31 of the battery cell 10 and project along the first direction X, and the projection of the portion of the adhesive containment space B extending away from the first surface 31 of the battery cell 10 at least partially overlaps with the projection of the battery cell 10.

[0139] The adhesive containment space B may extend in part toward the side away from the first surface 31 of the battery cell 10, or the entire adhesive containment space B may be located toward the side away from the first surface 31 of the battery cell 10.

[0140] By projecting along the first direction X, the projection of the adhesive containment space B at least partially overlaps with the projection of the battery cell 10, the adhesive containment space B can occupy as little space as possible in the direction parallel to the first surface 31, and the space perpendicular to the first surface 31 can be fully utilized, and under the condition that the adhesive containment space B occupies as little space as possible in the direction parallel to the first surface 31, the battery 100 has a relatively large sealing area and improves the sealing performance between the first sealing surface 21 and the second sealing surface 32, thereby having relatively high reliability.

[0141] As shown in Figures 3 to 6, in some embodiments, the battery 100 further includes an adhesive blocking structure 50, which is installed at the junction of the sealed space A and the adhesive containment space B.

[0142] The adhesive blocking structure 50 is used to block the sealant 40 from filling the adhesive containment space B, thereby reducing the risk of the sealant 40 in the adhesive containment space B overflowing into the sealed space A.

[0143] The adhesive blocking structure 50 may be understood as being installed at the joint between the sealed space A and the adhesive containment space B, or at the boundary between the sealed space A and the adhesive containment space B.

[0144] An adhesive blocking structure 50 is installed at the joint between the sealed space A and the adhesive containment space B. The adhesive blocking structure 50 can limit the sealant 40 installed in the adhesive containment space B from overflowing into the sealed space A, thereby reducing the waste of sealant 40 and allowing the battery 100 to have relatively good sealing performance, which is advantageous in improving the sealing reliability of the battery 100.

[0145] As shown in Figures 3 to 6, in embodiments where the first end wall 22 and the first side wall 23 are arranged at an obtuse angle, and the second end wall 33 and the second side wall 34 are perpendicular, the adhesive blocking structure 50 is installed on the second side wall 34.

[0146] The adhesive blocking structure 50 is installed on the second side wall 34 and can support the first housing 20 along the direction of gravity, and can restrict the first housing 20 to move along the direction approaching the second end wall 33, thereby forming a sealed space A of a certain size between the first housing 20 and the second housing 30.

[0147] The adhesive blocking structure 50 can support the first housing 20 by supporting the end of the first side wall 23 that is separated from the first end wall 22.

[0148] As shown in Figures 3 and 4, the adhesive blocking structure 50 is a first projection 51 that protrudes from the inner surface of the second side wall 34, and the first housing 20 is supported by the first projection 51.

[0149] The inner surface of the second side wall 34 is the surface facing the sealed space A of the second side wall 34. The adhesive blocking structure 50 is a first projection 51 installed on the inner surface of the second side wall 34. The first projection 51 protrudes from the first inner surface along the second direction Y and extends into the sealed space A.

[0150] The first projection 51 and the second side wall 34 may be integrally molded, thereby facilitating the manufacturing and molding of the second housing 30. The first projection 51 and the second side wall 34 may be installed separately, and the first projection 51 may be connected to the second side wall 34. The method of connection between the first projection 51 and the second side wall 34 can vary, such as welding, adhesive bonding, or screw bonding.

[0151] Along a first direction X, the first projection 51 has a first contact surface 511 located on the side away from the second end wall 33. The end of the first side wall 23 away from the first end wall 22 abuts against the first contact surface 511. In embodiments in which the second housing 30 includes two second side walls 34, the first projection 51 is provided on the first inner surface of each of the two second side walls 34, and the ends of the two first side walls 23 of the first housing 20 away from the first end wall 22 abut against the first contact surfaces 511 of the two first projections 51. The first contact surfaces 511 of the two first projections 51 may be located in the same plane, so that the ends of the two first side walls 23 of the first housing 20 away from the first end wall 22 may be of equal height in the first direction X.

[0152] The first projection 51 can prevent the sealant 40 in the adhesive containment space B from entering the sealed space A, and can also restrict the first housing 20 to move toward the second end wall 33, thereby maintaining the sealed space A at a size that accommodates a certain number of battery cells 10.

[0153] Therefore, the adhesive blocking structure 50 is a first projection 51 that protrudes from the inner surface of the second side wall 34, which can prevent the sealant 40 in the adhesive containment space B from overflowing into the sealed space A, and can also support the first housing 20, thereby restricting the first housing 20 to move toward the second housing 30, and thus the sealed space A maintains a relatively large size.

[0154] In some embodiments, along a first direction X, the distance between the first contact surface 511 and the end of the second side wall 34 away from the second end wall 33 is smaller than the distance between the first contact surface 511 and the first surface 31, so that the first housing 20 can get closer to the end of the second side wall 34 away from the second end wall 33, thereby facilitating the assembly of the first housing 20 and the second housing 30. The size of the second side wall 34 of the second housing 30 along the first direction X is relatively high, and the second housing 30 may be a high box-wall structure, or it may be called a high vertical wall structure. The size of the first side wall 23 of the first housing 20 may be set relatively small, facilitating the assembly of the first housing 20 and the second housing 30.

[0155] As shown in Figures 3 and 4, in some embodiments, the end of the first projection 51 facing the second end wall 33 can form a gap between it and the second end wall 33, reducing the occupancy of the first projection 51 in the sealed space A and reducing the risk of interference between the first projection 51 and the internal structure of the sealed space A.

[0156] As shown in Figure 11, in some other embodiments, the end of the first projection 51 facing the second end wall 33 can extend to the second end wall 33, and the second end wall 33 can provide support for the first projection 51, so that the first end wall 22 and the first projection 51 together can support the first housing 20, reducing the risk of the first projection 51 detaching from the second side wall 34 as it bears the weight of the first housing 20.

[0157] As shown in Figures 5 and 6, in some other embodiments, the adhesive blocking structure 50 is a groove 52 installed on the inner surface of the second side wall 34, and a portion of the first housing 20 is located within the groove 52.

[0158] The adhesive-blocking structure 50 may be a groove 52 installed on the first inner surface, at least a part of the first housing 20 is inserted into the groove 52, and the groove wall surface of the groove 52 supports the first housing 20.

[0159] In an embodiment in which the first housing 20 includes a first end wall 22 and a first side wall 23, the first side wall 23 may be inserted into a groove 52, and the groove wall surface of the groove 52 abuts against the end of the first side wall 23 that is away from the first end wall 22.

[0160] In some embodiments, along a first direction X, the groove 52 can extend to the end face of the second side wall 34 away from the second end wall 33, thus forming an L-shaped groove 52 in the second side wall 34, and both the groove side wall and groove bottom surface of the groove 52 can abut against the end of the first side wall 23 away from the first end wall 22. One sealing surface 21 The surface facing the first side wall 23 can abut against the first side wall 23 and can also form a second sealing surface 32. Here, the groove side surface of the groove 52 may be a groove wall surface parallel to the first direction X of the groove 52, and the groove bottom surface of the groove 52 may be a groove wall surface intersecting the first direction X of the groove 52.

[0161] In an embodiment in which the second housing 30 includes two second side walls 34, grooves 52 are provided on the first inner surfaces of both second side walls 34, and the ends of the two first side walls 23 of the first housing 20 that are away from the first end wall 22 each abut against the groove walls of the two grooves 52. The bottom surfaces of the two grooves 52 may be located in the same plane, and thereafter the ends of the two first side walls 23 of the first housing 20 that are away from the first end wall 22 may be of equal height in the first direction X.

[0162] The groove 52 can prevent the sealant 40 in the adhesive containment space B from entering the sealed space A, and the bottom surface of the groove 52 can further restrict the first housing 20 to move toward the second end wall 33, thereby maintaining the sealed space A at a size that accommodates a certain number of battery cells 10.

[0163] The adhesive blocking structure 50 is a groove 52 installed on the inner surface of the second side wall 34, which can prevent the sealant 40 in the adhesive containment space B from overflowing into the sealed space A, and can also reduce the weight of the second housing 30, and such an adhesive blocking structure 50 does not interfere with the structure in the sealed space A.

[0164] In some embodiments, along a first direction X, the distance between the groove bottom surface of the groove 52 and the end of the second side wall 34 away from the second end wall 33 is smaller than the distance between the groove bottom surface of the groove 52 and the first surface 31, so that the first housing 20 can get closer to the opening side of the second housing 30, thereby facilitating the assembly of the first housing 20 and the second housing 30. The size of the second side wall 34 of the second housing 30 along the first direction X is relatively high, and the second housing 30 may be a high box-wall structure, and the second housing 30 may also be called a high vertical wall housing, and the size of the first side wall 23 of the first housing 20 may be set relatively small, facilitating the assembly of the first housing 20 and the second housing 30.

[0165] The adhesive blocking structure 50 is installed on the second side wall 34 to reduce the risk of interference between the adhesive blocking structure 50 and the battery cell 10.

[0166] As shown in Figures 12 to 15, in some embodiments, the second side wall 34 is bent from the end of the second end wall 33 toward the side away from the battery cell 10 along the first direction X to form a recess C, and the first side wall 23 is inserted into the recess C, or the first side wall 23 is bent from the end of the first end wall 22 toward the side away from the battery cell 10 along the first direction X to form a recess C, and the second side wall 34 is inserted into the recess C, and the recess C is used to accommodate the sealant 40.

[0167] As shown in Figures 12 and 13, the second side wall 34 is bent from one end of the second end wall 33 to form a recess C with an opening that faces the first end wall 22 along the first direction X. After bending, a portion of the inner surface of the second side wall 34 forms the wall surface of the recess C, and a portion of the inner surface of the second side wall 34 forms the second sealing surface 32. In such embodiments, the inner surface of the second side wall 34 refers to the surface of the second side wall 34 facing the battery cell 10 in the second direction Y before bending. After the second side wall 34 is bent to form the recess C, the surface of the recess C that moves away from the sealed space A of the bottom wall in the first direction X may protrude more than the surface of the second end wall 33 that moves away from the sealed space A. The impact on the strength of the second housing 30 by bending to form the recess C is relatively small.

[0168] The first side wall 23 is inserted into the recess C, and at least a portion of the surface of the first side wall 23 that is away from the sealed space A in the second direction Y forms the first sealing surface 21. The first sealing surface 21 and the second sealing surface 32 may be bonded together, and the sealant 40 is housed in the recess C and located on the side of the first side wall 23 facing the sealed space A, and the sealant 40 can connect the surface of the first side wall 23 facing the sealed space A to the wall surface of the recess C opposite to the surface of the first side wall 23 facing the sealed space A, thereby the first sealing surface 21, the second sealing surface 32 and the sealant 40 together seal the sealed space A.

[0169] Of course, in some other embodiments, a space for accommodating the sealant 40 can be formed between the first sealing surface 21 and the second sealing surface 32, and the sealant 40 can be accommodated in the recess C and all of it is located between the first sealing surface 21 and the second sealing surface 32, and the sealant 40 can be accommodated in the recess C and part of it is located between the first sealing surface 21 and the second sealing surface 32, and the sealant 40 can connect the first sealing surface 21 and the second sealing surface 32, and another part of it is located on the side of the first side wall 23 facing the sealed space A, and the sealant 40 can connect the surface of the first side wall 23 facing the sealed space A and the wall surface of the recess C opposite to the surface of the first side wall 23 facing the sealed space A, thereby improving sealing performance and further improving stability in the recess C of the first side wall 23. Here, a space for containing the sealant 40 can be formed between the first sealing surface 21 and the second sealing surface 32, and in an embodiment in which the sealant 40 is contained in the recess C and all of it is located between the first sealing surface 21 and the second sealing surface 32, the surface of the first side wall 23 facing the sealed space A and The wall surface of the recess C opposite the surface of the first side wall 23 facing the sealed space A is, They may be bonded together, or gaps may be left between them.

[0170] In an embodiment in which the second housing 30 includes two second side walls 34, both second side walls 34 can be bent to form recesses C, and the recesses C of the two second side walls 34 are located at both ends along the second direction Y of the second end wall 33. The two first side walls 23 can each be inserted correspondingly into the recesses C formed by bending the two second side walls 34.

[0171] As shown in Figures 14 and 15, the first side wall 23 is bent from one end of the first end wall 22 to form a recess C with an opening that extends toward the second end wall 33 along the first direction X. After bending, a portion of the inner surface of the first side wall 23 can form the wall surface of the recess C, and a portion of the inner surface of the first side wall 23 can form the first sealing surface 21. In such an embodiment, the inner surface of the first side wall 23 refers to the surface of the first side wall 23 facing the battery cell 10 in the second direction Y before bending. After the first side wall 23 is bent to form the recess C, the surface of the recess C that moves away from the sealed space A of the bottom wall in the first direction X may protrude more than the surface of the first end wall 22 that moves away from the sealed space A.

[0172] By bending it to form the recess C, the impact on the strength of the first housing 20 is relatively small.

[0173] The second side wall 34 is inserted into the recess C, and at least a portion of the surface of the second side wall 34 that is away from the sealed space A in the second direction Y forms a second sealing surface 32. The first sealing surface 21 and the second sealing surface 32 may be bonded together, and the sealant 40 is housed in the recess C and located on the side of the second side wall 34 facing the sealed space A, and the sealant 40 can connect the surface of the second side wall 34 facing the sealed space A to the wall surface of the recess C opposite to the surface of the second side wall 34 facing the sealed space A, thereby the first sealing surface 21, the second sealing surface 32 and the sealant 40 together seal the sealed space A.

[0174] Of course, in some other embodiments, a space for accommodating the sealant 40 can be formed between the first sealing surface 21 and the second sealing surface 32, and the sealant 40 can be accommodated in the recess C and all of it is located between the first sealing surface 21 and the second sealing surface 32, and the sealant 40 can be accommodated in the recess C and part of it is located between the first sealing surface 21 and the second sealing surface 32, and the sealant 40 can connect the first sealing surface 21 and the second sealing surface 32, and another part is located on the side of the second side wall 34 facing the sealed space A, and the sealant 40 can connect the surface of the second side wall 34 facing the sealed space A and the wall surface of the recess C opposite to the surface of the second side wall 34 facing the sealed space A, thereby improving the sealing performance, and furthermore the two side wall 34 The stability in the recess C can be improved. Here, a space for containing sealant 40 can be formed between the first sealing surface 21 and the second sealing surface 32, and in an embodiment in which the sealant 40 is contained in the recess C and all of it is located between the first sealing surface 21 and the second sealing surface 32, the surface of the second side wall 34 facing the sealed space A and The wall surface of the recess C opposite the surface of the second side wall 34 facing the sealed space A is, They may be bonded together, or gaps may be left between them.

[0175] In an embodiment in which the first housing 20 includes two first side walls 23, both first side walls 23 can be bent to form recesses C, and the recesses C of the two first side walls 23 are located at both ends of the first end wall 22 along the second direction Y. The two second side walls 34 can each be inserted correspondingly into the recesses C formed by bending the two first side walls 23.

[0176] The second side wall 34 can be bent from the end of the second end wall 33 toward the side away from the battery cell 10 along the first direction X to form a recess, and the recess can be formed on a foundation that does not reduce the strength of the second side wall 34, and the first side wall 23 can be inserted into the recess and act as a stopper for the first side wall 23, thereby improving the stability of the fit between the first housing 20 and the second housing 30.

[0177] In some embodiments, the projection is made along a first direction X, and the projection of the recess C overlaps at least partially with the projection of the battery cell 10.

[0178] Along the second direction Y, at least a portion of the battery cell 10 extends into the opening of the recess C. In embodiments in which the recess C is installed at both ends of the second end wall 33, facing each other along the second direction Y, the battery cell 10 extends along the second direction Y into the opening of the recess C and projects along the first direction X, with a portion of the projection of the battery cell 10 located within the recess C.

[0179] Projected along the first direction X, the projection of the recess C at least partially overlaps with the projection of the battery cell 10, allowing the battery cell 10 to make full use of the sealed space A, thereby improving the energy density of the battery cell 10. The battery cell 10 can also act to prevent the sealant 40 in the recess C from overflowing into the sealed space A.

[0180] As shown in Figures 16 to 24, in some embodiments, the first sealing surface 21 and the second sealing surface 32 are both perpendicular to the first surface 31.

[0181] The first sealing surface 21 and the second sealing surface 32 are arranged opposite and parallel to each other in a direction parallel to the first surface 31.

[0182] The first sealing surface 21 and the second sealing surface 32 are both perpendicular to the first surface 31. Compared to the case where the first sealing surface 21 and the second sealing surface 32 are parallel to the first surface 31, the space occupied by the first sealing surface 21 and the second sealing surface 32 in the direction parallel to the first surface 31 and intersecting the first sealing surface 21 and the second sealing surface 32 is minimized. As a result, the first sealing surface 21 and the second sealing surface 32 make full use of the space in the direction perpendicular to the first surface 31. This improves the space utilization rate of the battery 100 in the direction parallel to the first surface 31 and intersecting the first sealing surface 21 and the second sealing surface, allowing for the accommodation of more battery cells 10 or reducing the volume of the battery 100, and further improving the volumetric energy density of the battery 100.

[0183] As shown in Figures 16 to 22, in an embodiment in which both the first sealing surface 21 and the second sealing surface 32 are perpendicular to the first surface 31, the first housing 20 includes a first end wall 22 and a first side wall 23 connected to each other, with the first sealing surface 21 located on the first side wall 23; the second housing 30 includes a second end wall 33 and a second side wall 34 connected to each other, with the second end wall 33 having the first surface 31 and being located opposite the first end wall 22 along a first direction X, where the first direction X is perpendicular to the first surface 31; and the second sealing surface 32 located on the second side wall 34.

[0184] The first side wall 23 is connected to the end of the first end wall 22 along the second direction Y, and the first side wall 23 extends from the first end wall 22 in a direction approaching the second housing 30 along the first direction X.

[0185] The second direction Y is parallel to the first surface 31, and the first direction X is perpendicular to the second direction Y. The second direction Y may be the width direction of the battery 100, and both the first sealing surface 21 and the second sealing surface 32 are perpendicular to the first surface 31, and both the first sealing surface 21 and the second sealing surface 32 are perpendicular to the second direction Y, and it may also be said that both the first sealing surface 21 and the second sealing surface 32 are perpendicular to the width direction of the battery 100, and in the case of a similar sealing width, compared to the case where the first sealing surface 21 and the second sealing surface 32 are parallel to the first surface 31 (both the first sealing surface 21 and the second sealing surface 32 are parallel to the second direction Y), the first sealing surface 21 and the second sealing surface 32 are perpendicular to the first surface 31, thereby reducing the space occupied by the first sealing surface 21 and the second sealing surface 32 in the second direction Y, thereby improving the space utilization rate of the battery 100 in the second direction Y, allowing for the accommodation of more battery cells 10 or reducing the volume of the battery 100, and further improving the volumetric energy density of the battery 100. The width of the battery 100 is relatively small, which is advantageous for reducing the width of the battery 100 in power-consuming equipment that uses this battery 100 for power supply. For example, the power-consuming equipment may be a large truck, which is powered by the battery 100 according to the embodiment of this application, and the width of the battery 100 in the large truck can be manufactured to be relatively small. Generally, the width of the battery 100 basically coincides with the width of the large truck, meaning that the large truck may have a relatively small width.

[0186] The first end wall 22 and the first side wall 23 are positioned perpendicularly to each other, so that the first sealing surface 21 is perpendicular to the first surface 31. The second end wall 33 and the second side wall 34 are positioned perpendicularly to each other, so that the second sealing surface 32 is perpendicular to the first surface 31. The first side wall 23 and the second side wall 34 are positioned opposite and parallel to each other along the second direction Y.

[0187] At least a portion of the surface of the first side wall 23 facing or moving away from the sealed space A along the second direction Y forms the first sealing surface 21. At least a portion of the surface of the second side wall 34 facing or moving away from the sealed space A along the second direction Y forms the second sealing surface 32.

[0188] The first housing 20 may include two first side walls 23, each connected to the ends of a first end wall 22 along the second direction Y, and both first side walls 23 are perpendicular to the first end wall 22. The second housing 30 may include two second side walls 34, each connected to the ends of a second end wall 33 along the second direction Y, and both second side walls 34 are perpendicular to the second end wall 33.

[0189] In some embodiments, in a second direction Y, the second side wall 34 is located on the side of the first side wall 23 away from the sealed space A, with at least a portion of the surface of the first side wall 23 away from the sealed space A forming a first sealing surface 21, and at least a portion of the surface of the second side wall 34 approaching the sealed space A forming a second sealing surface 32.

[0190] The first housing 20 includes a first end wall 22 and a first side wall 23 connected to each other, and the second housing 30 includes a second end wall 33 and a second side wall 34 connected to each other. The first housing 20 and the second housing 30 can easily surround each other to form a sealed space A for housing the battery cell 10. The first sealing surface 21 is located on the first side wall 23, and the second sealing surface 32 is located on the second side wall 34. As a result, the area of ​​the first sealing surface 21 and the second sealing surface 32 is relatively large, allowing for a good connection and good sealing performance between them. The battery 100 has relatively high reliability. Furthermore, the structure of the first housing 20 and the second housing 30 is simple and easy to manufacture.

[0191] As shown in Figures 16 to 17, in some embodiments, sealant 40 is filled between the first sealing surface 21 and the second sealing surface 32.

[0192] The first sealing surface 21 and the second sealing surface 32 are positioned opposite each other and spaced apart in the second direction Y, and an adhesive containment space B is formed between the first sealing surface 21 and the second sealing surface 32. In an embodiment in which the first side wall 23 and the first end wall 22 are positioned perpendicularly, and the second side wall 34 and the second end wall 33 are positioned perpendicularly, the adhesive containment space B between the first sealing surface 21 and the second sealing surface 32 may be a constant pitch space, or it may be a variable pitch space in which the pitch gradually increases or decreases along the third direction Z.

[0193] The sealant 40 is filled between the first sealing surface 21 and the second sealing surface 32, improving the sealing performance for the sealed space A. Furthermore, by bonding the first sealing surface 21 and the second sealing surface 32 with the sealant 40, the connection stability between the first housing 20 and the second housing 30 can be improved. When bonding the first sealing surface 21 and the second sealing surface 32 with the sealant 40, it is not necessary to install other connecting members to connect the first housing 20 and the second housing 30, reducing the assembly steps of the battery 100 and saving costs.

[0194] In embodiments where both the first sealing surface 21 and the second sealing surface 32 are perpendicular to the first surface 31, the space formed between the first sealing surface 21 and the second sealing surface 32 may be used to accommodate a sealing member such as a gasket or a sealing ring. The sealing member is sandwiched between the first sealing surface 21 and the second sealing surface 32. The sealing member and the first sealing surface 21 may be in contact or bonded, and the sealing member and the second sealing surface 32 may be in contact or bonded.

[0195] In some embodiments, the projection is along a second direction Y, and the projection of the sealant 40 at least partially overlaps with the projection of the battery cell 10, and the second direction Y is parallel to the first surface 31 and intersects the first side wall 23.

[0196] In embodiments where both the first sealing surface 21 and the second sealing surface are perpendicular to the first surface 31, at least a portion of the sealant 40 between the first sealing surface 21 and the second sealing surface 32 can extend along the second direction Y of the battery cell 10 and project along the second direction Y, and the projection of the portion of the sealant 40 extending to one side in the second direction Y of the battery cell 10 at least partially overlaps with the projection of the battery cell 10.

[0197] The sealant 40 may be partially extended to one side in the second direction Y of the battery cell 10, or the entire sealant 40 may be located on one side in the second direction Y of the battery cell 10.

[0198] Projected along the second direction Y, the projection of the sealant 40 at least partially overlaps with the projection of the battery cell 10, reducing the space occupied by the sealant 40 in other directions intersecting the second direction Y. The sealant 40 can make full use of the space of the battery 100 in the second direction Y, thereby advantageous in improving the energy density of the battery 100. The other directions intersecting the second direction Y may be any direction intersecting the second direction Y, for example, a first direction X perpendicular to the second direction Y, and a third direction Z perpendicular to both the first direction X and the second direction Y.

[0199] In embodiments in which both the first sealing surface 21 and the second sealing surface 32 are perpendicular to the first surface 31, as shown in Figures 16 to 20, the battery 100 further includes an adhesive blocking structure 50, which is installed in a position close to the first sealing surface 21 and the second sealing surface 32 of the sealed space A.

[0200] The adhesive blocking structure 50 is used to block the sealant 40 from filling the adhesive containment space B defined by the first sealing surface 21 and the second sealing surface 32, thereby reducing the risk of the sealant 40 in the adhesive containment space B overflowing into the sealed space A.

[0201] The adhesive blocking structure 50 may be understood as being installed at a position close to the first sealing surface 21 and the second sealing surface 32 of the sealed space A, and may also be understood as being installed at the joint between the sealed space A and the adhesive-containing space B, or at the boundary between the sealed space A and the adhesive-containing space B.

[0202] The adhesive blocking structure 50 is installed at a position close to the first sealing surface 21 and the second sealing surface 32 of the sealed space A. The adhesive blocking structure 50 can limit the sealant 40 installed in the adhesive containment space B from overflowing into the sealed space A, thereby reducing the waste of sealant 40 and allowing the battery 100 to have relatively good sealing performance, which is advantageous in improving the sealing reliability of the battery 100.

[0203] As shown in Figures 16 to 20, in some embodiments, the adhesive blocking structure 50 may be installed on the first surface 31. The adhesive blocking structure 50 is installed on the first surface 31 to facilitate its installation.

[0204] The adhesive-blocking structure 50 installed on the first surface 31 may take various forms, as shown in Figures 16 and 17, where the adhesive-blocking structure 50 is a second projection 53 protruding from the first surface 31, and a part of the first housing 20 is located between the second side wall 34 and the second projection 53.

[0205] The adhesive-blocking structure 50 may be a second projection 53 that protrudes beyond the first surface 31, and along the first direction X, at least a portion of the first housing 20 is located between the second side wall 34 and the second projection 53.

[0206] In an embodiment in which the first housing 20 includes a first end wall 22 and a first side wall 23, the end of the first side wall 23 away from the first end wall 22 is located between the second side wall 34 and the second projection 53. The second projection 53 is located on the side of the first side wall 23 away from the second side wall 34, and two 5 protrusions 3This can limit the sealant 40 between the first sealing surface 21 and the second sealing surface 32 from overflowing into the sealed space A, and further restrict the first side wall 23 to deform in a direction away from the first side wall 23, thereby limiting the initial installation size so that the sealed space A remains essentially unchanged, reducing the risk of the battery cell 10 being pushed out as the first side wall 23 deforms along the direction away from the second side wall 34, and further reducing the risk of seal failure of the sealant 40 between the first sealing surface 21 and the second sealing surface 32 as the first side wall 23 deforms along the direction away from the second side wall 34, causing the adhesive containment space B between the first sealing surface 21 and the second sealing surface 32 to gradually increase.

[0207] In an embodiment in which the first housing 20 includes two first side walls 23 and the second housing 30 includes two second housings 30, two first protrusions 51 may be provided on the first surface 31, the two first protrusions 51 each being provided close to two second side walls 34, and the two first side walls 23 each being inserted between the two first protrusions 51 and the two first side walls 23.

[0208] As shown in Figures 18 to 21, in some embodiments, the first housing 20 includes a first end wall 22 and a first side wall 23 connected to each other, with a first sealing surface 21 installed on the first side wall 23; the second housing 30 includes a second end wall 33, with a housing groove 54 installed in the second end wall 33, with a second sealing surface 32 installed on the groove wall of the housing groove 54; and the first side wall 23 is inserted into the housing groove 54, with sealant 40 filled into the housing groove 54.

[0209] A accommodating groove 54 is formed on the first surface 31 of the second end wall 33, and the accommodating groove 54 can be recessed in a direction away from the first end wall 22 from the first surface 31, and the accommodating groove 54 extends to the second side wall 34, and at least a portion of the surface of the second side wall 34 facing the sealed space A may be used as a second sealing surface 32 and as one of the groove wall surfaces of the accommodating groove 54, and the groove wall surface positioned opposite the second side wall 34 of the accommodating groove 54 may form an adhesive blocking structure 50, and the accommodating groove 54 may be used as an adhesive blocking space.

[0210] A portion of the first housing 20 is inserted into the housing groove 54. In embodiments in which the first housing 20 includes a first end wall 22 and a first side wall 23, the end of the first side wall 23 away from the first end wall 22 is inserted into the housing groove 54. At least a portion of the sealant 40 between the first sealing surface 21 and the second sealing surface 32 is located within the housing groove 54.

[0211] In some embodiments, as shown in Figures 18 and 19, the thickness of the second end wall 33 at the corresponding position of the accommodating groove 54 is smaller than the thickness of the second end wall 33 at other positions. Such accommodating grooves 54 may be formed by thinning a portion of the second end wall 33, or by integral molding methods such as casting or injection molding.

[0212] In some other embodiments, as shown in Figures 19 and 20, the accommodating groove 54 is recessed away from the first surface 31 and away from the first end wall 22, and the surface of the second end wall 33 away from the first surface 31 protrudes away from the first end wall 22 at the corresponding position of the accommodating groove 54, thereby making it possible to achieve that the thickness of the second end wall 33 at the corresponding position of the accommodating groove 54 matches the thickness of the second end wall 33 at other positions, thereby giving the second end wall 33 relatively good structural strength. Such accommodating grooves 54 may be formed by methods such as pressure molding and bending.

[0213] The first side wall 23 is inserted into the housing groove 54 and can act as a stopper for the first side wall 23, and can further restrict the first side wall 23 from deforming in a direction toward the sealed space A or away from the sealed space A, and the housing groove 54 is filled with sealant 40 to improve sealing performance, and the sealant 40 can further connect the first housing 20 and the second housing 30 within the housing groove 54, eliminating the need to install other connecting members to connect the first housing 20 and the second housing 30, thereby reducing the assembly steps of the battery 100 and saving costs.

[0214] In embodiments in which the adhesive blocking structure 50 is installed on the first surface 31, the second side wall 34 of the second housing 30 may be installed in a low side wall structure, that is, the size of the second side wall 34 of the second housing 30 in the first direction X is relatively small, and the space occupied by the second side wall 34 in the first direction X can be reduced.

[0215] As shown in Figure 22, in some embodiments, the projection is along the first direction X, and the projection of the housing groove 54 at least partially overlaps with the projection of the battery cell 10.

[0216] Along the second direction Y, at least a portion of the battery cell 10 extends into the groove opening of the housing groove 54. In embodiments in which two housing grooves 54 are installed at opposite ends of the second end wall 33, positioned opposite each other along the second direction Y, the battery cell 10 extends into the groove opening of the housing groove 54 along the second direction Y, projects along the first direction X, and a portion of the projection of the battery cell 10 is located within the housing groove 54.

[0217] Projected along the first direction X, the projection of the housing groove 54 at least partially overlaps with the projection of the battery cell 10, allowing the battery cell 10 to fully utilize the sealed space A, thereby improving the energy density of the battery cell 10. The battery cell 10 can also have the sealant 40 in the housing groove 54 overflow into the sealed space A.

[0218] As shown in Figure 2, in some embodiments, the first housing 20 further includes two third side walls 24, each connected to the ends of the first end wall 22 along the third direction Z, and the two first side walls 23 and the two third side walls 24 together form the box side walls of the first housing 20, so that the first housing 20 is a hollow structure in which a housing cavity for housing the battery cell 10 is formed at an opening on one side.

[0219] In some embodiments, the second housing 30 further includes two fourth side walls 35, each connected to the ends of the second end wall 33 along the third direction Z, and the two fourth side walls 35 and the two second side walls 34 together form the box side walls of the second housing 30, so that the second housing 30 is a hollow structure in which a housing cavity for housing a battery cell 10 is formed at an opening on one side.

[0220] The third direction Z, the second direction Y, and the first direction X are perpendicular to each other in pairs. The third direction Z may also be the longitudinal direction of the battery 100, and if the battery 100 is used in a large truck, the third direction Z may essentially coincide with the longitudinal direction of the large truck.

[0221] The third side wall 24 is installed in a one-to-one correspondence with the second side wall 34, and the third side wall 24 is located inside the fourth side wall 35.

[0222] A third sealing surface (not shown) is provided on the third side wall 24, and a fourth sealing surface (not shown) is provided on the fourth side wall 35. The third sealing surface and the fourth sealing surface fit together to seal the sealed space A. The third sealing surface may intersect with the first surface 31, and the fourth sealing surface may intersect with the first surface 31, thereby reducing the space occupied by the third sealing surface and the fourth sealing surface in the third direction Z. A sealing space for containing sealant 40 can also be formed between the third sealing surface and the fourth sealing surface, and the third sealing surface and the fourth sealing surface can be bonded with the sealant 40, thereby realizing the connection between the first housing 20 and the second housing 30. This eliminates the need to install other connecting members for connecting the first housing 20 and the second housing 30 at the corresponding positions of the third sealing surface and the fourth sealing surface, which is advantageous in simplifying the assembly steps of the battery 100 and saving costs.

[0223] Of course, the third sealing surface and the fourth sealing surface may be parallel to the first surface 31.

[0224] As shown in Figure 23, the first housing 20 may be a plate-like structure, and the second housing 30 is a hollow structure with one side open to form a housing cavity for accommodating the battery cell 10. The two end faces of the first housing 20 facing the two second side walls 34 along the second direction Y each form a first sealing surface 21. Between the first sealing surface 21 and the second sealing surface 32, an adhesive housing space B for installing sealant 40 can be formed. The surface of the first housing 20 away from the first surface 31 can be located on the same plane as the end face of the second side wall 34 away from the second end wall 33.

[0225] As shown in Figure 24, the second housing 30 may be a plate-like structure, and the first housing 20 is a hollow structure with one side open to form a housing cavity for accommodating the battery cell 10. The two end faces of the second housing 30 that face the two first side walls 23 along the second direction Y each form a second sealing surface 32. The space between the first sealing surface 21 and the second sealing surface 32 can form an adhesive housing space B for installing sealant 40. The surface of the second housing 30 that is away from the first surface 31 can be located on the same plane as the end face of the first side wall 23 that is away from the first end wall 22.

[0226] Embodiments of this application further provide a power-consuming device, the power-consuming device comprising a battery 100 according to any of the above embodiments.

[0227] The power consumption device employs the battery 100 provided above, which has a relatively high energy density, and therefore has a relatively long range and can meet more power consumption demands.

[0228] Embodiments of this application provide a battery 100 comprising a battery cell 10, a first housing 20, and a second housing 30. The battery cell 10 is housed in a sealed space A defined by the first housing 20 and the second housing 30. The first housing 20 includes a first end wall 22 and a first side wall 23, with the first side wall 23 connected to both ends of the first end wall 22 along a second direction Y, and the two first side walls 23 are both positioned at an obtuse angle to the first end wall 22, and the two first side walls 23 are arranged in a figure-eight shape. The second housing 30 includes a second end wall 33 and a second side wall 34, with the second end wall 33 and the first end wall 22 positioned opposite each other along a first direction X, and the second side walls 34 connected to both ends of the second end wall 33 along a second direction Y, and the two second side walls 34 are both positioned perpendicular to the second end wall 33. The dimensions of the two second side walls 34 along the first direction X are greater than the dimensions of the first side wall 23 along the first direction X, and the second housing 30 has a high side wall structure. The first side wall 23 is located on the side of the second side wall 34 that approaches the sealed space A, a portion of the surface of the first side wall 23 away from the sealed space A forms the first sealing surface 21, and a portion of the surface of the second side wall 34 approaching the sealed space A forms the second sealing surface 32, forming a containment space between the first sealing surface 21 and the second sealing surface 32 in which the sealant 40 is contained. The surface of the second end wall 33 facing the sealed space A is the first surface 31, on which the battery cell 10 is mounted. A first projection 51 is provided on the first inner surface of each of the two second side walls 34, and the ends of the two first side walls 23 of the first housing 20 that are away from the first end wall 22 are supported by the first contact surfaces 511 of the two first projections 51 that are away from the second end wall 33. Alternatively, a groove 52 is provided on the first inner surface of each of the two second side walls 34, and the groove 52 extends to the ends of the second side walls 34 that are away from the second end wall 33. The ends of the two first side walls 23 of the first housing 20 that are away from the first end wall 22 are inserted into the two grooves 52 and abut against the groove walls of the grooves 52.

[0229] Embodiments of this application provide a battery 100 comprising a battery cell 10, a first housing 20, and a second housing 30. The battery cell 10 is housed in a sealed space A defined by the first housing 20 and the second housing 30. The first housing 20 includes a first end wall 22 and a first side wall 23, with the first side wall 23 connected to both ends of the first end wall 22 along a second direction Y, and both first side walls 23 positioned perpendicular to the first end wall 22. The second housing 30 includes a second end wall 33 and a second side wall 34, with the second end wall 33 and the first end wall 22 positioned opposite each other along a first direction X, with the second side walls 34 connected to both ends of the second end wall 33 along a second direction Y, and both second side walls 34 positioned perpendicular to the second end wall 33. The dimensions of the two second side walls 34 along the first direction X are smaller than the dimensions of the first side wall 23 along the first direction X, and the second housing 30 has a low side wall structure. The first side wall 23 is located on the side of the second side wall 34 that approaches the sealed space A, and a portion of the surface of the first side wall 23 away from the sealed space A forms a first sealing surface 21, and a portion of the surface of the second side wall 34 approaching the sealed space A forms a second sealing surface 32, forming a containment space between the first sealing surface 21 and the second sealing surface 32 in which the sealant 40 is contained. The surface of the second end wall 33 facing the sealed space A is the first surface 31, on which the battery cell 10 is placed. Two second protrusions 53 are provided on the first surface 31, and the two second protrusions 53 are spaced apart along the second direction Y, and the second protrusions 53 are adhesive blocking structures 50. The ends of the two first side walls 23 of the first housing 20 that are separated from the first end wall 22 are each inserted between two second protrusions 53 and two second side walls 34.

[0230] The foregoing are merely preferred embodiments of this application and are not intended to limit it, and to those skilled in the art, this application is subject to various modifications and changes. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application. [Explanation of Symbols]

[0231] 1000-Vehicle, 100-Battery, 10-Battery cell, 20-First housing, 21-First sealing surface, 22-First end wall, 23-First side wall, 24-Third side wall, 30-Second housing, 31-First surface, 32-Second sealing surface, 33-Second end wall, 34-Second side wall, 35-Fourth side wall, 40-Sealant, 50-Adhesive blocking structure, 51-First projection, 511-First contact surface, 52-Recessed groove, 53-Second projection, 54-Housing groove, 200-Controller, 300-Motor, X-First direction, Y-Second direction, Z-Third direction, A-Sealed space, B-Adhesive housing space, C-Recess.

Claims

1. It is a battery, Battery cell and A first housing including the first sealing surface, A second housing comprising a first surface and a second sealing surface, wherein the first surface is used for mounting the battery cell, The first housing and the second housing together enclose a sealed space for housing the battery cell, and the first sealing surface and the second sealing surface are fitted together to seal the sealed space. A battery in which the first sealing surface intersects the first surface, and the second sealing surface intersects the first surface.

2. The battery according to claim 1, wherein at least one of the first sealing surface and the second sealing surface is perpendicular to the first surface.

3. The battery according to claim 1 or 2, wherein one of the first sealing surface and the second sealing surface is perpendicular to the first surface, and the other of the first sealing surface and the second sealing surface is not perpendicular to the first surface and intersects it.

4. The battery according to claim 3, wherein one of the first sealing surface and the second sealing surface, perpendicular to each other on the first surface, is located on the side of the other that is away from the sealed space.

5. The battery according to claim 4, wherein the second sealing surface is perpendicular to the first surface, and the second sealing surface is located on the side of the first sealing surface away from the sealed space.

6. The first housing includes a first end wall and a first side wall connected to each other, and the first sealing surface is installed on the first side wall. The battery according to any one of claims 3 to 5, wherein the second housing includes a second end wall and a second side wall connected to each other, the second end wall having the first surface and being positioned opposite the first end wall in a first direction, the first direction being perpendicular to the first surface, and the second sealing surface being positioned on the second side wall.

7. The battery according to claim 6, wherein the first sealing surface is not perpendicular to and intersects the first surface, and the first side wall is connected to the first end wall at an obtuse angle, or the second sealing surface is not perpendicular to and intersects the first surface, and the second side wall is connected to the second end wall at an obtuse angle.

8. The battery according to claim 7, wherein the first sealing surface and the second sealing surface together form an adhesive storage space for accommodating sealant.

9. The battery according to claim 8, wherein the projection is made along the first direction, and the projection of the adhesive containment space at least partially overlaps with the projection of the battery cell.

10. The battery according to claim 8, further comprising an adhesive blocking structure, the adhesive blocking structure being installed at the joint between the sealed space and the adhesive containment space.

11. The battery according to claim 10, wherein the adhesive blocking structure is installed on the second side wall.

12. The battery according to claim 11, wherein the adhesive-blocking structure is a first projection that protrudes from the inner surface of the second side wall, and the first housing is supported by the first projection.

13. The battery according to claim 11, wherein the adhesive blocking structure is a groove installed on the inner surface of the second side wall, and a part of the first housing is located within the groove.

14. The second side wall is bent from the end of the second end wall toward the battery cell toward the first direction to form a recess, and the first side wall is inserted into the recess, or the first side wall is bent from the end of the first end wall toward the battery cell toward the first direction to form a recess, and the second side wall is inserted into the recess, The battery according to claim 6, wherein the recess is used to accommodate a sealant.

15. The battery according to claim 14, wherein the projection is made along the first direction, and the projection of the recess at least partially overlaps with the projection of the battery cell.

16. The battery according to claim 1 or 2, wherein both the first sealing surface and the second sealing surface are perpendicular to the first surface.

17. The first housing includes a first end wall and a first side wall connected to each other, and the first sealing surface is installed on the first side wall. The battery according to claim 16, wherein the second housing includes a second end wall and a second side wall connected to each other, the second end wall having the first surface and being positioned opposite the first end wall in a first direction, the first direction being perpendicular to the first surface, and the second sealing surface being positioned on the second side wall.

18. The battery according to claim 17, wherein a sealant is filled between the first sealing surface and the second sealing surface.

19. The battery according to claim 18, wherein the projection of the sealant is along a second direction, the projection of the sealant at least partially overlaps with the projection of the battery cell, and the second direction is parallel to the first surface and intersects the first side wall.

20. The battery according to claim 18, further comprising an adhesive blocking structure, wherein the adhesive blocking structure is positioned in proximity to the first sealing surface and the second sealing surface of the sealed space.

21. The battery according to claim 20, wherein the adhesive blocking structure is installed on the first surface.

22. The battery according to claim 20, wherein the adhesive-blocking structure is a second projection that protrudes from the first surface, and a part of the first housing is located between the second side wall and the second projection.

23. The first housing includes a first end wall and a first side wall connected to each other, the first sealing surface is installed on the first side wall, the second housing includes a second end wall, the first end wall and the second end wall are arranged opposite each other in a first direction, the first direction is perpendicular to the first surface, The battery according to claim 1 or 2, wherein a housing groove is provided in the second end wall, the second sealing surface is placed on the groove wall of the housing groove, and the first side wall is inserted into the housing groove and the housing groove is filled with sealant.

24. The battery according to claim 23, wherein the projection of the housing groove is projected along the first direction, and the projection of the housing groove at least partially overlaps with the projection of the battery cell.

25. A power-consuming device comprising a battery according to any one of claims 1 to 24.

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