Battery and electric device

Abstract

A battery (10) and an electric device. The battery (10) comprises: a case (11) defining an energy compartment (115); a plurality of battery cells mounted in the energy compartment (115); an energy-absorbing structure (13) connected to the case (11) and located at the front end of the energy compartment (115); and an elastic energy-storage structure (12) connected to the front end of the energy-absorbing structure (13).

Description

Battery and electric device TECHNICAL FIELD

[0001] The present application relates to the technical field of battery, in particular to a battery and an electric device. BACKGROUND

[0002] In the related art, when the electric device collides at high speed, the box of the battery is easily deformed to extrude the internal battery monomer, which can cause deformation and damage of multiple battery monomers in the battery, thereby reducing the use reliability of the battery and the reliability of the electric device.

[0003] SUMMARY

[0004] The present application provides a battery and an electric device to more effectively absorb and disperse collision energy, reduce the deformation degree of the box during collision, thereby reducing the stress on the battery and reducing the risk of deformation and extrusion of the box on the battery, thereby improving the use reliability of the battery and the reliability of the electric device.

[0005] In a first aspect, the embodiments of the present application provide a battery, comprising:

[0006] a box, the box defining an energy cabin;

[0007] a plurality of battery monomers, the plurality of battery monomers being installed in the energy cabin;

[0008] an energy absorption structure, the energy absorption structure being connected to the box and located at the front end of the energy cabin;

[0009] a resilient energy storage structure, the resilient energy storage structure being connected to the front end of the energy absorption structure.

[0010] In the above technical solution, the resilient energy storage structure and the energy absorption structure are longitudinally distributed and connected. When the resilient energy storage structure is connected to the front end of the energy absorption structure, the resilient energy storage structure and the energy absorption structure form a continuous and cooperative system. When a collision occurs, the resilient energy storage structure first buffers, and then the energy absorption structure absorbs collision energy, which more effectively absorbs and disperses collision energy, reduces the deformation degree of the box during collision, thereby reducing the stress on the battery and reducing the risk of deformation and extrusion of the box on the battery, thereby improving the use reliability of the battery and the reliability of the electric device.

[0011] In some embodiments, the resilient energy storage structure is connected to the front end of the box, and the energy absorption structure is located between the resilient energy storage structure and the box.

[0012] In some embodiments, the box comprises a front beam and left and right side beams spaced apart in the lateral direction, the front beam being connected between the left and right side beams, the energy tank being located behind the front beam, the rear end of the energy-absorbing structure being connected to the front end of the front beam, and the elastic energy storage structure being connected to the front beam.

[0013] In some embodiments, the elastic energy storage structure is connected to the two ends of the front beam in the lateral direction respectively, and the elastic energy storage structure and the front beam form an energy-absorbing channel therebetween, and the energy-absorbing structure is arranged in the energy-absorbing channel.

[0014] In some embodiments, the box further comprises an inner longitudinal beam, the front end of the inner longitudinal beam being connected to the rear end of the front beam and located between the left and right side beams, and at least part of the horizontal projection of the inner longitudinal beam is located directly behind the horizontal projection of the energy-absorbing structure.

[0015] In some embodiments, the inner longitudinal beam is provided in a plurality, and the plurality of inner longitudinal beams are distributed between the left and right side beams and spaced apart in the lateral direction.

[0016] In some embodiments, the elastic energy storage structure comprises a steel plate spring.

[0017] In some embodiments, at least part of the energy-absorbing structure is connected to the middle of the elastic energy storage structure in the lateral direction.

[0018] In some embodiments, the energy-absorbing structure is provided in a plurality, and the plurality of energy-absorbing structures are distributed and spaced apart in the lateral direction.

[0019] In some embodiments, the width of the energy-absorbing structure in the lateral direction gradually increases from front to back.

[0020] In some embodiments, the energy-absorbing structure has a plurality of cavities, a partition rib is arranged between two adjacent cavities, and the cavities extend through the energy-absorbing structure in the longitudinal direction.

[0021] In a second aspect, the embodiments of the present application provide a power-using device, comprising:

[0022] The battery of any one of the above.

[0023] In the technical scheme, the elastic energy storage structure and the energy absorption structure can form a continuous and cooperative system when the elastic energy storage structure is connected with the front end of the energy absorption structure. When a collision occurs, the elastic energy storage structure first buffers, and then the energy absorption structure absorbs the collision energy, so that the collision energy is more effectively absorbed and dispersed, the deformation degree of the box body during the collision is reduced, the stress on the battery is reduced, the risk of the box body deforming and extruding the battery is reduced, the use reliability of the battery is improved, and the reliability of the electric device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0025] FIG. 1 is a structural schematic diagram of a vehicle according to some embodiments of the present application;

[0026] FIG. 2 is a bottom view of a partial structure of a battery according to some embodiments of the present application;

[0027] FIG. 3 is a bottom view of a partial structure of a battery according to some embodiments of the present application;

[0028] FIG. 4 is an assembly schematic diagram of an elastic energy storage structure, an energy absorption structure, and an inner longitudinal beam according to some embodiments of the present application;

[0029] FIG. 5 is an assembly schematic diagram of an elastic energy storage structure, an energy absorption structure, and an inner longitudinal beam according to some embodiments of the present application;

[0030] FIG. 6 is an assembly schematic diagram of an elastic energy storage structure, an energy absorption structure, and an inner longitudinal beam according to some embodiments of the present application;

[0031] FIG. 7 is a structural schematic diagram of an energy absorption structure according to some embodiments of the present application;

[0032] FIG. 8 is a structural schematic diagram of an energy absorption structure according to some embodiments of the present application;

[0033] FIG. 9 is a structural schematic diagram of an energy absorption structure according to some embodiments of the present application;

[0034] FIG. 10 is a structural schematic diagram of an energy absorption structure according to some embodiments of the present application;

[0035] Fig. 11 is a structural schematic diagram of the energy absorption structure according to some embodiments of the present application. Vehicle 1; battery 10, motor 20, controller 30; box body 11, front cross beam 111, inner longitudinal beam 112, left side beam 113, right side beam 114, energy cabin 115; elastic energy storage structure 12; energy absorption structure 13, cavity 131, partition rib 132; energy absorption channel 14. DETAILED DESCRIPTION

[0036] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0037] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used in the present application are only for the purpose of describing the specific embodiments of the present application, and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and claims of the present application and the above description of drawings are intended to cover non-exclusive inclusion. The terms "first", "second" and the like in the specification and claims of the present application and the above description of drawings are used to distinguish different objects, and are not intended to describe a particular order or primary and secondary relationship.

[0038] In the present application, the phrase "embodiment" means that the specific features, structures or characteristics described in conjunction with the embodiment can be included in at least one embodiment of the present application. The appearance of this phrase at various places in the specification does not necessarily mean the same embodiment, nor is it an independent or alternative embodiment to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in the present application can be combined with other embodiments.

[0039] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection", "attach" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] The term "and / or" in the present application is only used to describe the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent three cases of A alone, A and B together, and B alone. In addition, the character " / " in the present application generally represents an "or" relationship between the front and rear associated objects.

[0041] The "multiple" appearing in the present application refers to two or more (including two), and similarly, "multiple groups" refers to two or more groups (including two groups), and "multiple pieces" refers to two or more pieces (including two pieces).

[0042] In the present application, the battery can be a battery pack, and a plurality of battery monomers are arranged in the battery.

[0043] The battery monomer mentioned in the embodiments of the present application can include a lithium ion secondary battery, a lithium ion primary battery, a lithium-sulfur battery, a sodium lithium ion battery, a sodium ion battery or a magnesium ion battery, etc. The embodiments of the present application are not limited thereto. The battery monomer can be in the shape of a cylinder, a flat body, a cuboid or other shapes, etc. The embodiments of the present application are not limited thereto. The battery monomer is generally divided into three types according to the packaging method: cylindrical battery monomer, square battery monomer and soft package battery monomer, and the embodiments of the present application are not limited thereto.

[0044] The battery mentioned in the embodiments of the present application refers to a single physical module including one or more battery monomers to provide higher voltage and capacity. For example, the battery mentioned in the present application can include a battery module or a battery pack, etc. The battery generally includes a box for packaging one or more battery monomers or a plurality of battery modules. The box can avoid the influence of liquid or other foreign matters on the charging or discharging of the battery monomer.

[0045] A single battery cell includes a casing, electrode assembly, and electrolyte. The casing houses the electrode assembly and electrolyte. The electrode assembly consists of a positive electrode, a negative electrode, and a separator. The battery cell primarily functions by the movement of metal ions between the positive and negative electrode plates. The positive electrode includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector, while the uncoated positive current collector protrudes beyond the coated one, serving as the positive electrode tab. Taking a lithium-ion battery as an example, the positive current collector can be made of aluminum, and the positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode includes a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative current collector, and the negative current collector without the negative active material layer protrudes from the one with the negative active material layer. The negative current collector without the negative active material layer serves as the negative electrode tab. The material of the negative current collector can be copper, and the negative active material can be carbon or silicon, etc. To ensure that a large current can be passed without melting, there are multiple positive electrode tabs stacked together, and there are multiple negative electrode tabs stacked together.

[0046] The separator can be made of PP (polypropylene) or PE (polyethylene), etc. Furthermore, the electrode assembly can be a wound structure or a stacked structure; the embodiments of this application are not limited to these.

[0047] In recent years, new energy vehicles have experienced rapid development. In the field of electric vehicles, the power battery, as the power source, plays an irreplaceable and crucial role. A battery consists of a casing and multiple individual battery cells housed within it. As a core component of new energy vehicles, the battery faces high requirements in terms of both safety and cycle life.

[0048] When an electrical device experiences a high-speed collision, the battery casing is prone to deformation, which can compress the internal battery cells. This can cause deformation and damage to multiple battery cells, reducing the reliability of the battery and consequently the reliability of the electrical device.

[0049] Based on the above considerations, in order to solve the problem of deformation and damage to individual battery cells caused by collisions with electrical devices, the inventors, after in-depth research, designed a battery comprising: a housing, an energy-absorbing structure, an elastic energy storage structure, and multiple individual battery cells. The housing defines an energy chamber; multiple individual battery cells are installed in the energy chamber; the energy-absorbing structure is connected to the housing and located at the front end of the energy chamber; the elastic energy storage structure is connected to the front end of the energy-absorbing structure.

[0050] In this type of battery structure, the elastic energy storage structure and the energy absorption structure are integrated into a combined energy absorption structure. This structure allows the elastic energy storage structure and the energy absorption structure to form a continuous and collaborative system. When a collision occurs, this system can more effectively utilize their respective advantages to jointly cope with the impact of the collision. Furthermore, through the interaction between the energy storage structure and the energy absorption structure, the collision energy is absorbed and dispersed more effectively, reducing the degree of deformation of the casing during the collision. This reduces the stress on the battery and lowers the risk of the casing deforming and squeezing the battery, thereby improving the reliability of the battery and, consequently, the reliability of the electrical device.

[0051] This application provides an electrical device that uses a battery as a power source. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0052] For ease of explanation, the following embodiments will be described using a vehicle 1 as an example of an electrical device according to an embodiment of this application.

[0053] Figure 1 shows a schematic diagram of a vehicle 1 according to one embodiment of this application. Vehicle 1 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A motor 20, a controller 30, and a battery 10 can be installed inside vehicle 1. The controller 30 controls the battery 10 to supply power to the motor 20. For example, the battery 10 can be installed at the bottom, front, or rear of vehicle 1. The battery 10 can be used to power vehicle 1. For example, the battery 10 can serve as the operating power source for vehicle 1, for example, to meet the electrical system requirements of vehicle 1, such as for starting, navigation, and operation. In another embodiment of this application, the battery 10 can not only serve as the operating power source for vehicle 1 but also as the driving power source for vehicle 1, replacing or partially replacing gasoline or natural gas to provide driving power for vehicle 1.

[0054] Unless otherwise specified, as shown in Figure 2, which is a bottom view of part of the battery structure, the longitudinal direction is the length direction of the vehicle, i.e., the front-to-back direction in the figure; the lateral direction in this application is the width direction of the vehicle, i.e., the left-to-right direction in the figure; the vertical direction in this application is the height direction of the vehicle, i.e., the up-down direction (not shown in Figure 2), and the vertical direction is perpendicular to both the longitudinal and lateral directions.

[0055] This application provides a battery 10.

[0056] The battery 10 according to an embodiment of the present application is described below with reference to Figures 2-11.

[0057] According to some embodiments of this application, as shown in FIG2, the battery 10 includes: a housing 11, an energy-absorbing structure 13, an elastic energy storage structure 12, and a plurality of battery cells.

[0058] The housing 11 defines an energy chamber 115; multiple battery cells are installed in the energy chamber 115; an energy-absorbing structure 13 is connected to the housing 11 and is located at the front end of the energy chamber 115; and an elastic energy storage structure 12 is connected to the front end of the energy-absorbing structure 13.

[0059] The elastic energy storage structure 12 may include, but is not limited to, leaf springs, helical springs and air springs, etc., without limitation.

[0060] For example, in some embodiments, as shown in Figures 2-3, the elastic energy storage structure 12 is a leaf spring.

[0061] The connection between the elastic energy storage structure 12 and the housing 11 can be, but is not limited to, bolt connection, riveting or welding, etc., and is not restricted here.

[0062] For example, in some embodiments, as shown in Figures 4-6, the connection between the elastic energy storage structure 12 and the housing 11 is a bolt connection.

[0063] The energy-absorbing structure 13 may include, but is not limited to, energy-absorbing boxes, buffer frames, and airbags, etc., without limitation.

[0064] For example, in some embodiments, the energy-absorbing structure 13 is an energy-absorbing box.

[0065] The connection between the energy-absorbing structure 13 and the housing 11 can be, but is not limited to, bolt connection, riveting or welding, etc., and is not restricted here.

[0066] For example, in some embodiments, the connection between the energy-absorbing structure 13 and the housing 11 is a bolted connection.

[0067] The connection method between the front end of the elastic energy storage structure 12 and the energy absorption structure 13 may include, but is not limited to, bolt connection, riveting or welding, etc., and is not limited here.

[0068] For example, in some embodiments, the connection between the front end of the elastic energy storage structure 12 and the energy absorption structure 13 is welding.

[0069] In actual implementation, taking vehicle 1 as an example of the electrical device, when vehicle 1 is in a high-speed collision condition, the box 11 collapses after being subjected to a huge impact force from the front. When the collision energy is transferred to the elastic energy storage structure 12, the elastic energy storage structure 12 absorbs part of the collision energy by compressing and deforming backward. The collision energy that is not absorbed by the elastic energy storage structure 12 continues to be transferred to the energy absorption structure 13. The energy absorption structure 13 absorbs part of the collision energy by crushing and deforming. The remaining collision energy is then transferred to the multiple battery cells installed in the energy compartment 115.

[0070] The battery 10 provided in this application embodiment, through the design of the elastic energy storage structure 12 and the energy absorption structure 13 being distributed and connected longitudinally, when the front end of the elastic energy storage structure 12 and the energy absorption structure 13 are connected, the elastic energy storage structure 12 and the energy absorption structure 13 can form a continuous and cooperative system. When a collision occurs, the elastic energy storage structure 12 first buffers the impact, and then the energy absorption structure 13 absorbs the impact energy, more effectively absorbing and dispersing the impact energy, reducing the degree of deformation of the housing 11 during the collision, thereby reducing the force on the battery 10, reducing the risk of the housing 11 deforming and squeezing the battery 10, thereby improving the reliability of the battery 10 and thus improving the reliability of the electrical device.

[0071] According to some embodiments of this application, as shown in Figures 2-6, the elastic energy storage structure 12 is connected to the front end of the box 11, and the energy absorption structure 13 is located between the elastic energy storage structure 12 and the box 11.

[0072] It is understandable that the elastic energy storage structure 12 is directly connected to the front end of the box 11. Compared with other structures fixed to the vehicle 1, the box 11 can directly support and protect the elastic energy storage structure 12, and the fixing points of the energy absorption structure 13 and the elastic energy storage structure 12 are concentrated in the box 11, which is convenient for operation.

[0073] The battery 10 provided in this embodiment utilizes the assembly design between the aforementioned elastic energy storage structure 12, energy absorption structure 13, and housing 11. Since the energy absorption structure 13 is located between the elastic energy storage structure 12 and the housing 11, when an impact occurs, the impact energy is first dispersed to a larger area by the elastic energy storage structure 12, and then further dispersed and absorbed by the energy absorption structure 13. This multi-stage dispersion and absorption mechanism can significantly reduce the concentrated impact on individual battery cells, lowering the risk of damage to the battery 10. Furthermore, by integrating the elastic energy storage structure 12 and energy absorption structure 13 at the front end of the housing 11, the spatial layout of the battery 10 can be optimized, allowing the battery 10 to maintain sufficient strength and safety while possessing a more compact structure and higher energy density.

[0074] According to some embodiments of this application, as shown in Figures 2-3, the housing 11 includes a front crossbeam 111 and a left beam 113 and a right beam 114 arranged laterally. The front crossbeam 111 is connected between the left beam 113 and the right beam 114. The energy chamber 115 is located behind the front crossbeam 111. The rear end of the energy absorption structure 13 is connected to the front end of the front crossbeam 111. The elastic energy storage structure 12 is connected to the front crossbeam 111.

[0075] The energy-absorbing structure is at least partially connected to the middle region of the front crossbeam 111 along the transverse direction. The middle region is the area covered by a certain distance on both sides of the midline of the front crossbeam 111 along the transverse direction. For example, in some embodiments, the middle region is the area covered by 0.5m on both sides of the midline of the front crossbeam 111 along the transverse direction.

[0076] In actual operation, as shown in Figures 2 and 3, taking vehicle 1 as an example, when vehicle 1 is in a high-speed collision, the housing 11 collapses after being subjected to a huge impact force from the front. When the collision energy is transferred to the elastic energy storage structure 12, the elastic energy storage structure 12 absorbs part of the collision energy by compressing and deforming backward. The collision energy that is not absorbed by the elastic energy storage structure 12 continues to be transferred backward. Part of the collision energy is transferred to the energy absorption structure 13. The energy absorption structure 13 absorbs part of the collision energy by crushing and deforming. The remaining collision energy is then transferred longitudinally to the front crossbeam 111, and another part of the collision energy is directly transferred to the front crossbeam 111. The collision energy transferred to the front crossbeam 111 through the above two methods is finally distributed laterally to the left beam 113 and the right beam 114, thereby preventing the collision energy from directly hitting the multiple battery cells installed in the energy compartment 115.

[0077] The battery 10 provided in this application embodiment, through the structural design of the elastic energy storage structure 12 connected to the front crossbeam 111, realizes the general transmission path of collision energy from the elastic energy storage structure 12 to the left beam 113 and the right beam 114. The multi-level dispersion and absorption mechanism can significantly reduce the concentrated effect of impact on the battery cells, reduce the risk of damage to the battery 10, and effectively slow down the displacement and deformation of the battery 10, protect the integrity and safety of the battery 10, and maintain the integrity of the overall structure of the electrical device, reduce the deformation and damage of the electrical device, thereby improving the reliability of the electrical device.

[0078] According to some embodiments of this application, as shown in Figures 4-6, the two ends of the elastic energy storage structure 12 are respectively connected to the two ends of the front crossbeam 111 along the lateral direction, and an energy absorption channel 14 is formed between the elastic energy storage structure 12 and the front crossbeam 111, and the energy absorption structure 13 is arranged in the energy absorption channel 14.

[0079] In this embodiment, as shown in Figures 4-6, the elastic energy storage structure 12 and the front crossbeam 111 can be enclosed to form an energy absorption channel 14. The energy absorption channel 14 can be opened vertically, and the energy absorption structure 13 can be entirely housed in the energy absorption channel 14 or partially housed in the energy absorption channel 14.

[0080] The battery 10 provided in this application embodiment, through the arrangement of the energy absorption channel 14, enables the elastic energy storage structure 12, the energy absorption structure 13, and the front crossbeam 111 to form a stable structural system. This not only improves the overall rigidity of the housing 11, but also maintains good stability when subjected to external forces, reducing the possibility of deformation and failure of the housing 11. In the event of a collision or impact, the energy absorption structure 13 can stably and fully undergo crushing deformation, effectively absorbing and dispersing energy, reducing the impact force transmitted to the battery cells, protecting the battery cells from damage as much as possible, and improving the safety performance of the entire electrical device.

[0081] According to some embodiments of this application, as shown in Figures 2-3, the box body 11 further includes an inner longitudinal beam 112. The front end of the inner longitudinal beam 112 is connected to the rear end of the front crossbeam 111, and the inner longitudinal beam 112 is located between the left beam 113 and the right beam 114. At least a portion of the orthographic projection of the inner longitudinal beam 112 on the horizontal plane is located directly behind the orthographic projection of the energy-absorbing structure 13 on the horizontal plane.

[0082] It is understandable that the centerline of the inner longitudinal beam 112 can be aligned with the centerline of the energy-absorbing structure 13 as much as possible. When a collision occurs, after the energy-absorbing structure 13 is fully crushed, the collision energy can be transferred more longitudinally to the inner longitudinal beam 112 that is directly opposite to it, so as to further absorb and disperse the collision energy.

[0083] In actual operation, as shown in Figures 2-3, during the impact of the electrical device, the battery 10 can have the following four force transmission paths: First, the elastic energy storage structure 12 can first absorb part of the impact energy, and the remaining impact energy can be transmitted longitudinally to the front crossbeam 111, and finally distributed laterally to the left beam 113 and right beam 114 connected to the front crossbeam 111; Second, the elastic energy storage structure 12 can first absorb part of the impact energy, then the energy absorption structure 13 can absorb another part of the impact energy, and then the remaining impact energy can be transmitted longitudinally to the front crossbeam 111, and finally distributed laterally to the left beam 113 and right beam 114 connected to the front crossbeam 111; The energy is distributed laterally to the left beam 113 and right beam 114 connected to the front crossbeam 111; thirdly, the elastic energy storage structure 12 can first absorb part of the collision energy, and the remaining collision energy can be transferred longitudinally to the front crossbeam 111, and finally continue to be transferred longitudinally to the front inner longitudinal beam 112 connected to the front crossbeam 111; fourthly, the elastic energy storage structure 12 can first absorb part of the collision energy, then the energy absorption structure 13 can absorb part of the collision energy again, and then the remaining collision energy can be transferred longitudinally to the front crossbeam 111, and finally continue to be transferred longitudinally to the inner longitudinal beam 112 connected to the front crossbeam 111.

[0084] The battery 10 provided in this application embodiment, through the positional design of the inner longitudinal beam 112 and the energy-absorbing structure 13, provides good support for the energy-absorbing structure 13 with the inner longitudinal beam 112 at the rear. The collision energy can be transmitted more evenly according to the predetermined design, avoiding local stress concentration, improving the collision resistance performance of the battery 10, and realizing the dispersion of the collision force to the side beams and inner longitudinal beam 112 of the battery 10 after lateral and longitudinal transmission, increasing the diversity of force transmission paths, mitigating the negative impact of high-speed collision energy on the safety of the battery 10 as much as possible, thereby reducing the probability of the battery 10 catching fire and exploding, and thus optimizing the collision safety performance of the entire electrical device.

[0085] According to some embodiments of this application, as shown in FIG3, the inner longitudinal beams 112 are configured as multiple beams, and the multiple inner longitudinal beams 112 are distributed laterally between the left beam 113 and the right beam 114.

[0086] In this context, "multiple" refers to two or more beams. For example, in some embodiments, as shown in Figure 3, the inner longitudinal beams 112 are configured as three beams, which are distributed laterally between the left beam 113 and the right beam 114.

[0087] The battery 10 provided in this application embodiment, through the arrangement of the above-mentioned multiple inner longitudinal beams 112, based on the fact that the inner longitudinal beams 112 participate in the main force transmission path, the multiple inner longitudinal beams 112 can provide more support and protection, more effectively transmit and disperse collision force, and minimize the deformation and damage of the housing 11, thereby protecting the integrity and safety of the battery 10.

[0088] According to some embodiments of this application, as shown in Figures 2-11, the elastic energy storage structure 12 includes a leaf spring.

[0089] Understandably, based on the shape characteristics of the leaf spring itself, an independent leaf spring can be directly fixedly connected to the front crossbeam 111. Specifically, the cross-sectional shape of the leaf spring is approximately arched, i.e., arc-shaped. When arranged, the center of curvature is located on the side close to the front crossbeam 111, i.e., the arch foot faces the front crossbeam 111. After the leaf spring and the front crossbeam 111 are fixedly connected, the above-mentioned energy absorption channel 14 can be formed. The cross-sectional shape of the energy absorption channel 14 is approximately semi-elliptical.

[0090] The battery 10 provided in this application embodiment, through the design of the above-mentioned leaf spring as the main elastic element of the elastic energy storage structure 12, can effectively absorb the energy generated by the collision when the electrical device is involved in a collision. The elastic characteristics of the leaf spring enable it to deform rapidly and store energy, thereby reducing the impact of the collision on the energy chamber 115. At the same time, the leaf spring can withstand large loads and impacts, and can better cope with complex road conditions. Whether on bumpy roads or at high speeds, the leaf spring can provide stable support for the electrical device, maintaining the stability and operability of the electrical device. In addition, the leaf spring has good durability and fatigue resistance, and can withstand long-term use and repeated load impacts, thereby extending the service life of the electrical device.

[0091] According to some embodiments of this application, as shown in Figures 4 and 6, at least a portion of the energy-absorbing structure 13 is connected to the middle of the elastic energy storage structure 12 in the transverse direction.

[0092] In this embodiment, as shown in Figures 4 and 6, the energy-absorbing structure 13 is located between the elastic energy storage structure 12 and the front crossbeam 111. The centerline of the energy-absorbing structure 13 and the centerline of the elastic energy storage structure 12 both extend longitudinally, and the centerline of the energy-absorbing structure 13 is aligned with the centerline of the elastic energy storage structure 12.

[0093] The battery 10 provided in this application embodiment, through the structural design of at least part of the energy-absorbing structure 13 being connected to the middle of the elastic energy storage structure 12 in the transverse direction, can more effectively transfer the impact energy from the impact point to other parts of the energy-absorbing structure 13, thereby achieving uniform energy distribution. This helps to reduce the concentrated effect of the impact on the local area of ​​the energy-absorbing structure 13, thereby improving the stability of the crushing deformation of the energy-absorbing structure 13, and thus minimizing the impact force transmitted to the battery 10 behind it.

[0094] According to some embodiments of this application, as shown in FIG5, multiple energy-absorbing structures 13 are provided, and the multiple energy-absorbing structures 13 are distributed at intervals along the lateral direction.

[0095] In this context, "multiple" means two or more. For example, in some embodiments, as shown in FIG5, three energy-absorbing structures 13 are provided, and the three energy-absorbing structures 13 are distributed laterally spaced apart.

[0096] As shown in Figure 5, multiple energy-absorbing structures 13 extend longitudinally, and the spacing between any two adjacent energy-absorbing structures 13 can be equal. Furthermore, at least some of the multiple energy-absorbing structures 13 are connected to the middle of the elastic energy storage structure 12.

[0097] The battery 10 provided in this application embodiment can more evenly distribute and absorb the energy generated by the collision through the arrangement of the above-mentioned multiple energy-absorbing structures 13. When a collision occurs, each energy-absorbing structure 13 can work in parallel to jointly bear and disperse the impact energy, thereby reducing the energy transferred to the battery 10 more efficiently, optimizing the protection effect of the battery 10 during the collision, and at the same time, in the case of bias collision, only a portion of the multiple energy-absorbing structures 13 can be sacrificed, thereby reducing maintenance costs.

[0098] According to some embodiments of this application, the width of the energy-absorbing structure 13 gradually increases from front to back along the lateral direction.

[0099] Understandably, the gradually increasing width design allows the energy-absorbing structure 13 to more effectively disperse and absorb energy when subjected to impact. Due to the greater width at the rear, more material can be provided to participate in the energy absorption process, thereby increasing the total energy absorption. As the width increases, the stress distribution also becomes more uniform. When an impact occurs, the stress is no longer concentrated in a narrow area of ​​the energy-absorbing structure 13, but is dispersed over a wider area. Furthermore, the gradually increasing width of the energy-absorbing structure 13 can produce progressive deformation and energy absorption, thereby improving the impact response and allowing the impact energy to be absorbed over a longer period of time, reducing the instantaneous impact and vibration on the battery 10 behind it.

[0100] The battery 10 provided in this application embodiment improves energy absorption efficiency through the structural design of the energy-absorbing structure 13, which has a width that gradually increases from front to back. The wider rear energy-absorbing structure 13 can also provide a larger support area. When combined with the elastic energy storage structure 12, it can prevent the elastic energy storage structure 12 from tilting or becoming unstable after being subjected to force, thereby improving the impact resistance of the overall structure. Furthermore, since the width of the energy-absorbing structure 13 gradually increases, it can adapt to impact conditions of different intensities, directions, and angles. When subjected to different impacts, the energy-absorbing structure 13 can effectively absorb energy and reduce damage to the battery 10 behind it.

[0101] According to some embodiments of this application, as shown in Figures 7-11, the energy-absorbing structure 13 has a plurality of cavities 131, a partition rib 132 is provided between two adjacent cavities 131, and the cavity 131 extends longitudinally through the energy-absorbing structure 13.

[0102] The cavity 131 can be formed by stamping or other processing methods, and the energy-absorbing structure 13 can be made of aluminum alloy or other highly ductile materials.

[0103] The shape of cavity 131 may include, but is not limited to, square, triangle, circle, rhombus or polygon, etc., without limitation.

[0104] In this embodiment, as shown in Figures 7-8, the cavity 131 can be square in shape, and the multiple cavities 131 can all have the same size, or at least two of the multiple cavities 131 have different sizes. The partition rib 132 can include a horizontal partition rib 132 and a vertical partition rib 132 that intersects it perpendicularly.

[0105] In other embodiments, as shown in FIG9, the shapes of the plurality of cavities 131 may include rhombuses, triangles, quadrilaterals and pentagons, and the partition ribs 132 may be arranged diagonally.

[0106] In some other embodiments, as shown in FIG10, the shape of the plurality of cavities 131 may include hexagonal and trapezoidal, and the partition ribs 132 may include transverse partition ribs 132 and oblique partition ribs 132 intersecting therewith.

[0107] In some other embodiments, as shown in FIG11, the multiple cavities 131 may be circular in shape, and the multiple cavities 131 may have the same size, or at least two of the multiple cavities 131 may have different sizes.

[0108] The battery 10 provided in this application embodiment, through the above-mentioned cavity 131 and partition rib 132, can effectively absorb collision energy by wrinkling and deforming the energy-absorbing structure 13 according to the predetermined design during a collision, thereby minimizing the damage of the impact force to the battery 10. While improving the passive safety of the electrical device, it also significantly reduces the maintenance cost caused by the impact.

[0109] According to some embodiments of this application, this application also provides an electrical device including a battery 10 of any of the above schemes, and the battery 10 is used to provide electrical energy to the electrical device.

[0110] The electrical device can be any of the aforementioned devices or systems that use battery 10.

[0111] The electrical device provided in this application embodiment, through the aforementioned battery 10 configuration, allows the elastic energy storage structure 12 and the energy absorption structure 13 to form a continuous, collaborative system when connected at the front end. In the event of a collision, the elastic energy storage structure 12 first provides buffering, and then the energy absorption structure 13 absorbs the collision energy, more effectively absorbing and dispersing the collision energy, reducing the degree of deformation of the housing 11 during the collision, thereby reducing the force on the battery 10, lowering the risk of the housing 11 deforming and squeezing the battery 10, thus improving the reliability of the battery 10 and consequently improving the reliability of the electrical device.

[0112] According to some embodiments of this application, this application provides a battery 10, which includes: a housing 11, an energy-absorbing structure 13, an elastic energy storage structure 12, and a plurality of battery cells. The housing 11 defines an energy chamber 115; the plurality of battery cells are installed in the energy chamber 115; the energy-absorbing structure 13 is connected to the housing 11 and located at the front end of the energy chamber 115; the elastic energy storage structure 12 is connected to the front end of the energy-absorbing structure 13. The elastic energy storage structure 12 is connected to the front end of the housing 11, and the energy-absorbing structure 13 is located between the elastic energy storage structure 12 and the housing 11. The housing 11 includes a front crossbeam 111 and a left beam 113 and a right beam 114 arranged laterally. The front crossbeam 111 is connected between the left beam 113 and the right beam 114. The energy chamber 115 is located behind the front crossbeam 111. The rear end of the energy-absorbing structure 13 is connected to the front end of the front crossbeam 111, and the elastic energy storage structure 12 is connected to the front crossbeam 111. The elastic energy storage structure 12 is connected to both ends of the front crossbeam 111 along the transverse direction, forming an energy absorption channel 14 between the elastic energy storage structure 12 and the front crossbeam 111. An energy absorption structure 13 is arranged within the energy absorption channel 14. The housing 11 also includes an inner longitudinal beam 112, the front end of which is connected to the rear end of the front crossbeam 111 and located between the left beam 113 and the right beam 114. At least a portion of the orthographic projection of the inner longitudinal beam 112 in the horizontal plane is located directly behind the orthographic projection of the energy absorption structure 13 in the horizontal plane. Multiple inner longitudinal beams 112 are provided, spaced apart along the transverse direction between the left beam 113 and the right beam 114. The elastic energy storage structure 12 includes a leaf spring. At least a portion of the energy absorption structure 13 is connected to the middle of the elastic energy storage structure 12 along the transverse direction. Multiple energy absorption structures 13 are provided, spaced apart along the transverse direction. The width of the energy-absorbing structure 13 gradually increases from front to back along the transverse direction. The energy-absorbing structure 13 has multiple cavities 131, and a partition rib 132 is provided between two adjacent cavities 131. The cavities 131 extend longitudinally through the energy-absorbing structure 13.

[0113] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0114] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A battery, characterized by, The application relates to a battery, comprising: a box body defining an energy cabin; a plurality of battery monomers installed in the energy cabin; an energy absorption structure connected to the box body and located at the front end of the energy cabin; a resilient energy storage structure connected to the front end of the energy absorption structure.

2. The battery of claim 1, wherein, The resilient energy storage structure is connected to the front end of the box body, and the energy absorption structure is located between the resilient energy storage structure and the box body.

3. The battery of claim 2, wherein, The box body comprises a front cross beam and left and right side beams which are arranged in a transverse direction, the front cross beam is connected between the left and right side beams, the energy cabin is located behind the front cross beam, the rear end of the energy absorption structure is connected to the front end of the front cross beam, and the resilient energy storage structure is connected to the front cross beam.

4. The battery of claim 3, wherein, The two ends of the resilient energy storage structure in the transverse direction are connected to the two ends of the front cross beam in the transverse direction, an energy absorption channel is formed between the resilient energy storage structure and the front cross beam, and the energy absorption structure is arranged in the energy absorption channel.

5. The battery according to claim 3 or 4, characterized in that, The box body further comprises an inner longitudinal beam, the front end of the inner longitudinal beam is connected to the rear end of the front cross beam and located between the left and right side beams, and at least part of the horizontal projection of the inner longitudinal beam is located behind the horizontal projection of the energy absorption structure.

6. The battery of claim 5, wherein, A plurality of inner longitudinal beams are arranged, and the plurality of inner longitudinal beams are distributed between the left and right side beams in a transverse direction.

7. The battery of any one of claims 1-6, wherein, The resilient energy storage structure comprises a steel plate spring.

8. The battery of any one of claims 1-7, wherein, At least part of the energy absorption structure is connected to the middle part of the resilient energy storage structure in the transverse direction.

9. The battery of any one of claims 1-8, wherein, A plurality of energy absorption structures are arranged, and the plurality of energy absorption structures are distributed in a transverse direction.

10. The battery of any one of claims 1-9, wherein, The width of the energy absorption structure in the transverse direction gradually increases from front to back.

11. The battery of any one of claims 1-10, wherein, The energy absorption structure has a plurality of cavities, a partition rib is arranged between two adjacent cavities, and the cavities extend through the energy absorption structure in a longitudinal direction.

12. An electrical device, characterized by The application relates to a battery, comprising: The battery is any one of claims 1-11.

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