Battery and vehicle

Abstract

A battery (300) and a vehicle (200), the battery (300) being used for the vehicle (200), the battery (300) comprising: a box body (10) in which an energy bin (11) is formed, the energy bin (11) accommodating a plurality of battery cells (12); and the energy absorption structure (20) is connected with the energy bin (11), the energy absorption structure (20) is arranged on at least one side of the front portion or the rear portion of the battery single bodies (12) in the length direction of the battery (300), the length direction of the battery (300) is parallel to the driving direction of the vehicle (200), and at least part of the energy absorption structure (20) is located in the middle area of the battery (300) in the width direction of the battery (300).

Description

Batteries and vehicles Technical Field

[0001] This application relates to the field of batteries, and more particularly to a battery and a vehicle having the battery. Background Technology

[0002] In related technologies, the battery is installed in the chassis of the vehicle. When the vehicle is involved in a collision, the chassis is prone to deformation and squeezing of the battery, which can cause deformation and damage to the individual battery cells, reducing the reliability of the battery and thus reducing the reliability of the vehicle.

[0003] Summary of the Invention

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, one objective of this application is to provide a battery that reduces the risk of deformation and damage to individual battery cells in the event of a vehicle collision, thereby improving battery reliability and ultimately enhancing vehicle reliability.

[0005] In a first aspect, embodiments of this application provide a battery for use in a vehicle, comprising:

[0006] The box contains an energy chamber that holds multiple individual battery cells.

[0007] An energy-absorbing structure is connected to the energy chamber. Along the length of the battery, the energy-absorbing structure is located on at least one side in front of or behind multiple battery cells. The length of the battery is parallel to the driving direction of the vehicle. Along the width of the battery, at least a portion of the energy-absorbing structure is located in the middle region of the battery.

[0008] In the above technical solution, when a vehicle collides, the energy-absorbing structure can absorb the impact force. Compared with the existing technology, it can reduce the force on the battery cells, reduce the risk of battery cell deformation and damage, improve the reliability of battery use, and thus improve the reliability of the vehicle.

[0009] In some embodiments, the energy-absorbing structure includes a first energy-absorbing structure connected to the energy storage chamber; at least a portion of the first energy-absorbing structure is located in the middle region of the battery along the width direction of the battery.

[0010] In the above technical solution, the first energy-absorbing structure is connected to the energy chamber. When the vehicle is impacted from the front, the first energy-absorbing structure absorbs at least part of the impact force. The impact force not absorbed by the first energy-absorbing structure can be transferred to the energy chamber, the housing, and the vehicle chassis. This reduces the stress on individual battery cells, lowers the risk of squeezing individual battery cells, reduces the risk of deformation and damage to individual battery cells, and improves battery reliability, thereby improving vehicle reliability. By placing at least part of the first energy-absorbing structure in the middle area of ​​the battery, it is beneficial for the first energy-absorbing structure to absorb a greater extent of the impact force when the vehicle is involved in a frontal, rear, or offset collision.

[0011] In some embodiments, the energy chamber includes multiple side beams connected together to form the energy chamber, and a first energy-absorbing structure is fixedly connected to at least one side beam.

[0012] In the above technical solution, the energy chamber is arranged by including multiple side beams. The first energy-absorbing structure is fixedly connected to at least one side beam, so that the first energy-absorbing structure can be fixedly set in the energy chamber, thereby achieving the effect of setting the first energy-absorbing structure in the energy chamber, improving the positional stability of the first energy-absorbing structure, and facilitating the energy absorption of the first energy-absorbing structure.

[0013] In some embodiments, at least a portion of the battery cell abuts against at least one side beam.

[0014] In the above technical solution, by having at least some battery cells abut against at least one side beam, the side beam can support the battery cells, allowing them to be securely assembled within the energy compartment. Furthermore, this increases the number of battery cells, thereby improving the battery's energy density and ultimately extending the vehicle's driving range. It also facilitates the assembly of the battery within the energy compartment.

[0015] In some embodiments, the plurality of side beams includes two first side beams and two second side beams, the two first side beams being arranged opposite to each other and spaced apart along the length direction of the battery, the two second side beams being arranged opposite to each other and spaced apart along the width direction of the battery, and the first energy-absorbing structure being connected to at least one of the two first side beams.

[0016] In the above technical solution, by setting two first side beams and two second side beams, the effect of forming an energy chamber can be achieved, which also simplifies the energy chamber structure and facilitates its production and manufacturing. Furthermore, by connecting the first energy-absorbing structure to at least one of the two first side beams, after the first energy-absorbing structure is impacted, it can absorb at least part of the impact force. The impact force not absorbed by the first energy-absorbing structure can be transferred to the first side beams, and then to the two second side beams. The impact force can then be transferred along the energy chamber to the housing and other structural components of the vehicle, thus dispersing the impact force, reducing the risk of concentrated force, further reducing the stress on individual battery cells, further reducing the risk of squeezing individual battery cells, further reducing the risk of deformation and damage to individual battery cells, further improving battery reliability, and thus further improving vehicle reliability.

[0017] In some embodiments, along the length of the battery, the orthographic projection of the first energy-absorbing structure and the orthographic projection of the first side beam have an overlapping area.

[0018] In the above technical solution, the orthographic projection of the first energy-absorbing structure and the orthographic projection of the corresponding first side beam have an overlapping area along the length direction of the battery. When the first energy-absorbing structure is subjected to an impact force, it is beneficial to improve the force transmission performance between the first energy-absorbing structure and the first side beam. The first side beam can reliably support the first energy-absorbing structure, which is beneficial to improve the supporting effect of the first side beam on the first energy-absorbing structure and improve the stability of the first energy-absorbing structure when subjected to an external impact.

[0019] In some embodiments, along the length of the battery, the area of ​​the orthographic projection of the first energy-absorbing structure is S1, and the area of ​​the overlapping region between the orthographic projection of the first energy-absorbing structure and the orthographic projection of the first side beam is S2, satisfying: 10% ≤ S2 / S1 ≤ 100%.

[0020] In the above technical solution, by using 10%≤S2 / S1≤100%, the area of ​​the overlapping region between the orthographic projection of the first energy-absorbing structure and the orthographic projection of the first side beam is appropriate. When the first energy-absorbing structure is subjected to collision force, it is more conducive to improving the force transmission performance between the first energy-absorbing structure and the first side beam. The first side beam can more reliably support the first energy-absorbing structure, which is more conducive to improving the supporting role of the first side beam on the first energy-absorbing structure, and further improving the stability of the first energy-absorbing structure when subjected to external collision force.

[0021] In some embodiments, the orthographic projection of the first energy-absorbing structure lies entirely within the orthographic projection of the first side beam.

[0022] In the above technical solution, by ensuring that the orthographic projection of the first energy-absorbing structure is completely within the orthographic projection of the first side beam along the length of the battery, the first energy-absorbing structure is more likely to be subjected to impact force, which is more conducive to improving the force transmission performance between the first energy-absorbing structure and the first side beam. The first side beam can more reliably support the first energy-absorbing structure, which is more conducive to improving the supporting role of the first side beam on the first energy-absorbing structure, and further improving the stability of the first energy-absorbing structure when subjected to external impact.

[0023] In some embodiments, the energy-absorbing structure includes a plurality of first energy-absorbing structures arranged along the length direction of the battery, and adjacent first energy-absorbing structures along the length direction of the battery are connected.

[0024] In the above technical solution, multiple first energy-absorbing structures are arranged along the length of the battery and connected to each other along the length of the battery. When the energy-absorbing structure is impacted, the multiple first energy-absorbing structures can absorb the impact force, achieve a multi-level energy absorption effect, improve the energy absorption performance of the energy-absorbing structure, reduce the impact force transmitted to the energy chamber, further reduce the force on the battery cells, further reduce the risk of squeezing the battery cells, further reduce the risk of deformation and damage of the battery cells, further improve the reliability of the battery, and thus further improve the reliability of the vehicle.

[0025] In some embodiments, the energy-absorbing structure further includes a first connecting beam, and adjacent first energy-absorbing structures along the length direction of the battery are connected by the first connecting beam.

[0026] In the above technical solution, by setting a first connecting beam to connect the adjacent first energy-absorbing structures along the length direction of the battery, the connection strength of the adjacent first energy-absorbing structures can be improved, the structural strength of the energy-absorbing structure can be improved, the stability of the energy-absorbing structure when subjected to external force collision can be further improved, the energy absorption performance of the energy-absorbing structure can be further improved, and when the energy-absorbing structure is impacted, the impact force transmitted to the energy chamber can be further reduced.

[0027] In some embodiments, the dimensions of each first energy-absorbing structure decrease sequentially along the width direction of the battery in the direction away from the energy chamber.

[0028] In the above technical solution, by setting the dimensions of each first energy-absorbing structure to decrease sequentially along the width direction of the battery in the direction away from the energy chamber, the first energy-absorbing structure with the largest dimension along the width direction of the battery can be connected to the energy chamber. This is beneficial to increasing the connection area between the first energy-absorbing structure and the energy chamber. When the first energy-absorbing structure is subjected to an impact force, it is more beneficial to improve the force transmission performance between the first energy-absorbing structure and the first side beam. The energy chamber can more reliably support the first energy-absorbing structure, which is more beneficial to improving the supporting role of the energy chamber on the first energy-absorbing structure and further improving the stability of the first energy-absorbing structure when subjected to an external impact.

[0029] In some embodiments, the energy-absorbing structure includes a plurality of first energy-absorbing structures arranged along the width direction of the battery.

[0030] In the above technical solution, by including multiple first energy-absorbing structures arranged along the width direction of the battery, the energy absorption performance of the energy-absorbing structure can be improved. Furthermore, the multiple first energy-absorbing structures arranged along the width direction of the battery can be connected to the energy chamber, which helps to increase the connection area between the energy-absorbing structure and the energy chamber. When the energy-absorbing structure is subjected to an impact force, it is more conducive to improving the force transmission performance between the energy-absorbing structure and the energy chamber. The energy chamber can more reliably support the energy-absorbing structure, which is more conducive to improving the supporting role of the energy chamber on the energy-absorbing structure, and further improving the stability of the energy-absorbing structure when subjected to external impact.

[0031] In some embodiments, a plurality of first energy-absorbing structures are arranged at intervals along the width direction of the battery; or,

[0032] At least two first energy-absorbing structures are arranged in a cross pattern; or

[0033] At least two adjacent first energy-absorbing structures along the width direction of the battery are connected.

[0034] In the above technical solution, by arranging multiple first energy-absorbing structures at intervals along the width direction of the battery, the risk of interference between two adjacent first energy-absorbing structures arranged along the width direction of the battery can be reduced. When the multiple first energy-absorbing structures arranged at intervals along the width direction of the battery are connected to the energy chamber, the multiple first energy-absorbing structures will transmit the force to different positions in the energy chamber, so that the force is distributed and transmitted to the energy chamber, reducing the risk of stress concentration in the energy chamber, further reducing the risk of deformation of the energy chamber squeezing the battery cells inside the battery, and the energy chamber can more reliably support the energy-absorbing structure, which is more conducive to improving the supporting effect of the energy chamber on the energy-absorbing structure, and further improving the stability of the energy-absorbing structure when subjected to external force collision.

[0035] By arranging at least two first energy-absorbing structures in a cross pattern, the structural strength of the energy-absorbing structure can be improved, the energy-absorbing structure can be reliably connected to the energy chamber, the energy chamber can better support the energy-absorbing structure, and the stability of the energy-absorbing structure when subjected to external force collisions can be further improved.

[0036] By connecting at least two adjacent first energy-absorbing structures along the width direction of the battery, the structural strength of the energy-absorbing structure can be improved, the energy-absorbing structure can be reliably connected to the energy chamber, the energy chamber can better support the energy-absorbing structure, and the stability of the energy-absorbing structure when subjected to external force impact can be further improved.

[0037] In some embodiments, the energy-absorbing structure further includes a second energy-absorbing structure, which is located between the first energy-absorbing structure and the energy chamber along the length of the battery.

[0038] In the above technical solution, by placing the second energy-absorbing structure between the first energy-absorbing structure and the energy chamber, the energy-absorbing structure can have a multi-stage energy absorption effect. After the energy-absorbing structure is impacted, the first energy-absorbing structure can absorb at least part of the impact force, and the impact force not absorbed by the first energy-absorbing structure can be transferred to the second energy-absorbing structure. The second energy-absorbing structure further absorbs the impact force, which can further reduce the force on the battery cells, further reduce the risk of deformation and damage to the battery cells, further improve the reliability of the battery, and thus further improve the reliability of the vehicle.

[0039] In some embodiments, the second energy-absorbing structure is connected to the first energy-absorbing structure and is connected to the energy chamber.

[0040] In the above technical solution, the second energy-absorbing structure is connected to the first energy-absorbing structure and the energy chamber. After the energy-absorbing structure is impacted, the first energy-absorbing structure can absorb at least part of the impact force. The impact force not absorbed by the first energy-absorbing structure can be transferred to the second energy-absorbing structure, which further absorbs the impact force. The impact force not absorbed by the energy-absorbing structure is transferred to the energy chamber, and the impact force can be transferred along the energy chamber to the housing and other structural components of the vehicle, thereby dispersing the impact force, reducing the risk of concentrated force, further reducing the force on the battery cells, further reducing the risk of battery cell deformation and damage, further improving the reliability of battery use, and thus further improving the reliability of the vehicle.

[0041] In some embodiments, the energy chamber includes multiple side beams connected together to form the energy chamber, and the second energy-absorbing structure is fixedly connected to the side beams.

[0042] In the above technical solution, the first energy-absorbing structure is connected to the side beam of the energy compartment via the second energy-absorbing structure. After the energy-absorbing structure is impacted, the first energy-absorbing structure can absorb at least part of the impact force. The impact force not absorbed by the first energy-absorbing structure can be transferred to the second energy-absorbing structure, which further absorbs the impact force. The impact force not absorbed by the second energy-absorbing structure is transferred to the energy compartment, and the impact force can be transferred along the energy compartment to the housing and other structural components of the vehicle, thereby dispersing the impact force, reducing the risk of concentrated force, further reducing the force on the battery cells, further reducing the risk of battery cell deformation and damage, further improving the reliability of battery use, and thus further improving the reliability of the vehicle.

[0043] In some embodiments, the battery further includes a conductive beam located between the first energy-absorbing structure and the second energy-absorbing structure, and the conductive beam connects the first energy-absorbing structure and the second energy-absorbing structure.

[0044] In the above technical solution, the first energy-absorbing structure and the second energy-absorbing structure are connected by a transmission beam. After the first energy-absorbing structure is impacted, the impact force can be transmitted to the second energy-absorbing structure through the transmission beam, thereby realizing the effect of force transmission from the first energy-absorbing structure to the second energy-absorbing structure, so that the energy-absorbing structure has a multi-level energy absorption effect.

[0045] In some embodiments, the conductive beam extends along the width direction of the battery;

[0046] The transmission beam is connected to the enclosure, or the transmission beam forms part of the enclosure.

[0047] In the above technical solution, connecting the energy-absorbing structure to the enclosure via a transmission beam further enhances the reliability of the connection between the energy-absorbing structure and the energy chamber, reduces the vibration risk of the energy-absorbing structure, and allows the transmission beam to support the energy-absorbing structure, further improving its stability under external impact. Integrating the transmission beam into the enclosure simplifies the enclosure structure and facilitates lightweight design.

[0048] In some embodiments, along the length of the battery, the orthographic projections of the first energy-absorbing structure and the second energy-absorbing structure have an overlapping region.

[0049] In the above technical solution, along the length of the battery, the orthographic projection of the first energy-absorbing structure and the orthographic projection of the corresponding second energy-absorbing structure have an overlapping area. When the first energy-absorbing structure is subjected to an impact force, it is beneficial to improve the force transmission performance between the first energy-absorbing structure and the second energy-absorbing structure. The second energy-absorbing structure can reliably support the first energy-absorbing structure, which is beneficial to improve the supporting effect of the second energy-absorbing structure on the first energy-absorbing structure and improve the stability of the first energy-absorbing structure when subjected to an external impact.

[0050] In some embodiments, the area of ​​the orthographic projection of the first energy-absorbing structure is S1, and the area of ​​the overlapping region between the orthographic projection of the first energy-absorbing structure and the orthographic projection of the second energy-absorbing structure is S3, satisfying: 20% ≤ S3 / S1 ≤ 100%.

[0051] In the above technical solution, by using 20%≤S3 / S1≤100%, the area of ​​the overlapping region between the orthographic projection of the first energy-absorbing structure and the orthographic projection of the second energy-absorbing structure is appropriate. When the first energy-absorbing structure is subjected to a collision force, it is more conducive to improving the force transmission performance between the first energy-absorbing structure and the second energy-absorbing structure. The second energy-absorbing structure can more reliably support the first energy-absorbing structure, which is more conducive to improving the supporting role of the second energy-absorbing structure on the first energy-absorbing structure, and further improving the stability of the first energy-absorbing structure when subjected to an external collision.

[0052] In some embodiments, the orthographic projection of the first energy-absorbing structure lies entirely within the orthographic projection of the second energy-absorbing structure.

[0053] In the above technical solution, along the length of the battery, the orthogonal projection of the first energy-absorbing structure is completely within the orthogonal projection of the second energy-absorbing structure. When the first energy-absorbing structure is subjected to an impact force, it is more conducive to improving the force transmission performance between the first energy-absorbing structure and the second energy-absorbing structure. The second energy-absorbing structure can more reliably support the first energy-absorbing structure, which is more conducive to improving the supporting effect of the second energy-absorbing structure on the first energy-absorbing structure, and further improving the stability of the first energy-absorbing structure when subjected to an external impact.

[0054] In some embodiments, the energy-absorbing structure includes a plurality of second energy-absorbing structures arranged along the length direction of the battery, and adjacent second energy-absorbing structures along the length direction of the battery are connected.

[0055] In the above technical solution, multiple second energy-absorbing structures are arranged along the length of the battery and connected to each other along the length of the battery. When the energy-absorbing structure is impacted, the multiple second energy-absorbing structures can absorb the impact force, achieve a multi-level energy absorption effect, further improve the energy absorption performance of the energy-absorbing structure, reduce the impact force transmitted to the energy chamber, further reduce the force on the battery cells, further reduce the risk of the energy chamber deforming and squeezing the battery cells, further reduce the risk of battery cell deformation and damage, further improve the reliability of battery use, and thus further improve the reliability of the vehicle.

[0056] In some embodiments, the energy-absorbing structure further includes a second connecting beam, and adjacent second energy-absorbing structures along the length direction of the battery are connected by the second connecting beam.

[0057] In the above technical solution, by setting a second connecting beam to connect the adjacent second energy-absorbing structures along the length direction of the battery, the connection strength of the adjacent second energy-absorbing structures can be improved, the structural strength of the energy-absorbing structure can be further improved, the stability of the energy-absorbing structure when subjected to external force collision can be further improved, the energy absorption performance of the energy-absorbing structure can be further improved, and when the energy-absorbing structure is impacted, the impact force transmitted to the energy chamber can be further reduced.

[0058] In some embodiments, the dimensions of each second energy-absorbing structure decrease sequentially along the width direction of the battery in the direction away from the energy chamber.

[0059] In the above technical solution, by setting the dimensions of each second energy-absorbing structure to decrease sequentially along the width direction of the battery in the direction away from the energy chamber, the second energy-absorbing structure with the largest dimension along the width direction of the battery can be connected to the energy chamber. This is beneficial to increasing the connection area between the second energy-absorbing structure and the energy chamber. When the second energy-absorbing structure is subjected to an impact force, it is more beneficial to improve the force transmission performance between the second energy-absorbing structure and the energy chamber. The energy chamber can more reliably support the second energy-absorbing structure, which is more beneficial to improving the supporting role of the energy chamber on the second energy-absorbing structure, and further improving the stability of the second energy-absorbing structure when subjected to an external impact.

[0060] In some embodiments, the energy-absorbing structure includes a plurality of second energy-absorbing structures arranged along the width direction of the battery.

[0061] In the above technical solution, by including multiple second energy-absorbing structures arranged along the width direction of the battery, the energy absorption performance of the energy-absorbing structure can be improved. Furthermore, the multiple second energy-absorbing structures arranged along the width direction of the battery can be connected to the first side beam, which helps to increase the connection area between the energy-absorbing structure and the energy chamber. When the energy-absorbing structure is subjected to collision force, it is more conducive to improving the force transmission performance between the energy-absorbing structure and the energy chamber. The energy chamber can more reliably support the energy-absorbing structure, which is more conducive to improving the supporting role of the energy chamber on the energy-absorbing structure, and further improving the stability of the energy-absorbing structure when subjected to external collision force.

[0062] In some embodiments, a plurality of second energy-absorbing structures are arranged at intervals along the width direction of the battery; or,

[0063] At least two second energy-absorbing structures are arranged in a cross pattern; or

[0064] At least two adjacent second energy-absorbing structures along the width direction of the battery are connected.

[0065] In the above technical solution, by arranging multiple second energy-absorbing structures at intervals along the width direction of the battery, the risk of interference between two adjacent second energy-absorbing structures arranged along the width direction of the battery can be reduced. When the multiple second energy-absorbing structures arranged at intervals along the width direction of the battery are connected to the energy chamber, the multiple second energy-absorbing structures will transmit the force to different positions of the first side beam of the energy chamber, so that the force is distributed and transmitted to the energy chamber, reducing the risk of stress concentration in the energy chamber, further reducing the risk of deformation of the energy chamber squeezing the battery cells, and the energy chamber can more reliably support the energy-absorbing structure, which is more conducive to improving the supporting effect of the energy chamber on the energy-absorbing structure, and further improving the stability of the energy-absorbing structure when subjected to external force collision.

[0066] By arranging at least two second energy-absorbing structures in a cross pattern, the structural strength of the energy-absorbing structure can be improved. This allows the energy-absorbing structure to be reliably connected between the conduction beam and the energy chamber, which is more conducive to improving the supporting role of the energy chamber on the energy-absorbing structure and further enhancing the stability of the energy-absorbing structure when subjected to external force collisions.

[0067] By connecting at least two adjacent second energy-absorbing structures along the width direction of the battery, the structural strength of the energy-absorbing structure can be improved. This allows the energy-absorbing structure to be reliably connected between the conduction beam and the energy chamber, which is more conducive to improving the supporting role of the energy chamber on the energy-absorbing structure and further improving the stability of the energy-absorbing structure when subjected to external impact.

[0068] In some embodiments, the first energy-absorbing structure includes at least one of an energy-absorbing box, a buffer frame, a spring, and an airbag; and / or

[0069] The second energy-absorbing structure includes at least one of an energy-absorbing box, a buffer frame, a spring, and an airbag.

[0070] In the above technical solution, by including at least one of the first energy-absorbing structure and the second energy-absorbing structure, including at least one of the energy-absorbing box, the buffer frame, the spring and the airbag, at least one of the first energy-absorbing structure and the second energy-absorbing structure can have energy-absorbing performance, thereby enabling the energy-absorbing structure to meet the working requirements and improve the energy-absorbing effect of the energy-absorbing structure.

[0071] In some embodiments, the energy-absorbing box has a hollow cavity extending through the energy-absorbing box along the length of the battery.

[0072] In the above technical solution, the energy-absorbing box has a hollow cavity that runs through the energy-absorbing box along the length of the battery, which enables the energy-absorbing box to have energy-absorbing performance, which is beneficial to improving the energy absorption capacity of the energy-absorbing box. In addition, it can simplify the structure of the energy-absorbing box and facilitate its production and manufacturing.

[0073] In some embodiments, the buffer frame encloses to form a buffer cavity.

[0074] In the above technical solution, the buffer cavity is formed by enclosing the buffer frame, which enables the buffer frame to have energy absorption performance, which is beneficial to improving the energy absorption capacity of the buffer frame. In addition, it can simplify the structure of the buffer frame and facilitate the production and manufacturing of the buffer frame.

[0075] In some embodiments, the buffer cavity is provided with at least one of an energy-absorbing box, a spring, and an airbag.

[0076] In the above technical solution, by setting at least one of the energy-absorbing box, spring and airbag in the buffer cavity, the energy absorption performance of the energy-absorbing structure can be improved. After the energy-absorbing structure is impacted, it can absorb more collision force, which can further reduce the force on the battery cell, further reduce the risk of energy cell deformation and compression, further reduce the risk of battery cell deformation and damage, further improve the reliability of battery use, and thus further improve the reliability of the vehicle.

[0077] In some embodiments, an electrical compartment is also formed inside the housing, which is used to house electrical devices that are electrically connected to the battery cells. Along the direction of vehicle travel, the energy compartment is located in front of the electrical compartment.

[0078] In the above technical solution, the energy compartment is located in front of the electrical compartment, and the electrical components that are electrically connected to the battery cells in the energy compartment are set in the electrical compartment. When a collision occurs in front of the vehicle, the collision force is transmitted from the front of the battery to the rear. Since the collision force gradually decreases as it is transmitted to the rear, the force on the electrical components can be reduced, the risk of short circuit caused by the compression of the electrical components can be reduced, and the reliability of battery use can be further improved.

[0079] In some embodiments, a connecting longitudinal beam is provided inside the energy compartment, and the connecting longitudinal beam extends along the length direction of the battery.

[0080] In the above technical solution, by setting a connecting longitudinal beam inside the energy compartment, the battery cells can be supported after being installed in the energy compartment. This allows the battery cells to be installed more securely inside the energy compartment. Furthermore, when the connecting longitudinal beam is fixedly connected to the energy compartment, after the collision force is transmitted to the energy absorption structure, a portion of the collision force can be transmitted to the connecting longitudinal beam. The collision force is transmitted backward along the connecting longitudinal beam, which can further reduce the stress on the battery cells, further reduce the risk of the energy compartment deforming and squeezing the battery cells, further reduce the risk of battery cell deformation and damage, further improve the reliability of battery use, and thus further improve the reliability of the vehicle.

[0081] In some embodiments, the energy chamber includes multiple side beams connected together to form the energy chamber; the multiple side beams include two first side beams and two second side beams, the two first side beams are arranged opposite to each other and spaced apart along the length direction of the battery, and the two second side beams are arranged opposite to each other and spaced apart along the width direction of the battery; a connecting longitudinal beam connects the two first side beams.

[0082] In the above technical solution, the two first side beams are connected by a connecting longitudinal beam. After the collision force is transmitted to the front first side beam of the energy compartment, part of the collision force can be transmitted to the connecting longitudinal beam and then transmitted to the rear of the energy compartment along the connecting longitudinal beam. Part of the collision force is transmitted to the two second side beams along the front first side beam. The collision force on the second side beam is transmitted to the rear of the battery along the second side beam, which disperses the collision force. This can further reduce the force on the battery cells, further reduce the risk of the energy compartment deforming and squeezing the battery cells, further reduce the risk of battery cell deformation and damage, further improve the reliability of battery use, and thus further improve the reliability of the vehicle.

[0083] Secondly, embodiments of this application also provide a vehicle, including a chassis and the aforementioned battery, the battery being mounted on the chassis, an energy-absorbing structure being fixedly connected to the chassis, and at least a portion of the energy-absorbing structure being located in the middle region of the chassis.

[0084] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0085] Figure 1 is a schematic diagram of a vehicle according to an embodiment of this application;

[0086] Figure 2 is a schematic diagram of a battery mounted on a chassis according to an embodiment of this application;

[0087] Figure 3 is an enlarged view of point A in Figure 2;

[0088] Figure 4 is a bottom view of the battery according to the first embodiment of this application;

[0089] Figure 5 is a bottom view of a battery according to a second embodiment of this application;

[0090] Figure 6 is a bottom view of a battery according to a third embodiment of this application;

[0091] Figure 7 is a bottom view of a battery according to the fourth embodiment of this application;

[0092] Figure 8 is a bottom view of a battery according to the fifth embodiment of this application;

[0093] Figure 9 is a schematic diagram of the arrangement of the second energy-absorbing structure according to the first embodiment of this application;

[0094] Figure 10 is a schematic diagram of the arrangement of the second energy-absorbing structure according to the second embodiment of this application;

[0095] Figure 11 is a schematic diagram of the arrangement of the second energy-absorbing structure according to the third embodiment of this application;

[0096] Figure 12 is a schematic diagram of the arrangement of the second energy-absorbing structure according to the fourth embodiment of this application;

[0097] Figure 13 is a schematic diagram of the arrangement of the second energy-absorbing structure according to the fifth embodiment of this application;

[0098] Figure 14 is a schematic diagram of the arrangement of the second energy-absorbing structure according to the sixth embodiment of this application;

[0099] Figure 15 is a schematic diagram of the arrangement of the second energy-absorbing structure according to the seventh embodiment of this application;

[0100] Figure 16 is a schematic diagram of the arrangement of the second energy-absorbing structure according to the eighth embodiment of this application;

[0101] Figure 17 is a schematic diagram of the energy-absorbing structure arrangement according to the first embodiment of this application;

[0102] Figure 18 is a schematic diagram of the energy-absorbing structure arrangement according to the second embodiment of this application;

[0103] Figure 19 is a schematic diagram of the energy-absorbing structure arrangement according to the third embodiment of this application;

[0104] Figure 20 is a schematic diagram of the energy-absorbing structure arrangement according to the fourth embodiment of this application;

[0105] Figure 21 is a schematic diagram of the energy-absorbing structure arrangement according to the fifth embodiment of this application;

[0106] Figure 22 is a cross-sectional view of the energy-absorbing box according to the first embodiment of this application;

[0107] Figure 23 is a cross-sectional view of the energy-absorbing box according to the second embodiment of this application;

[0108] Figure 24 is a cross-sectional view of the energy-absorbing box according to the third embodiment of this application;

[0109] Figure 25 is a cross-sectional view of the energy-absorbing box according to the fourth embodiment of this application;

[0110] Figure 26 is a cross-sectional view of the energy-absorbing box according to the fifth embodiment of this application. Detailed Implementation

[0111] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0112] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0113] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0114] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0115] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, C and / or D can represent: C existing alone, C and D existing simultaneously, or D existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0116] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0117] In this application, "multiple" means two or more (including two).

[0118] In this application, the battery can be a battery pack, and the battery contains multiple individual battery cells.

[0119] In this application, the battery cell may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., and the embodiments of this application are not limited to these. The battery cell may be cylindrical, flat, cuboid, or other shapes, etc., and the embodiments of this application are not limited to these. Battery cells are generally divided into three types according to their packaging method: cylindrical battery cells, square battery cells, and pouch battery cells, and the embodiments of this application are not limited to these.

[0120] The battery pack mentioned in the embodiments of this application refers to a single physical module comprising multiple battery cells or multiple battery modules to provide higher voltage and capacity. A battery pack generally includes a housing for encapsulating multiple battery cells or multiple battery modules. The housing prevents liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0121] The battery module mentioned in the embodiments of this application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity.

[0122] 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.

[0123] 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.

[0124] In recent years, new energy vehicles have experienced rapid development. In the field of electric vehicles, batteries, as the power source, play an irreplaceable and crucial role. As a core component of new energy vehicles, batteries have high requirements for reliability.

[0125] The battery is installed in the vehicle's chassis. When the vehicle is involved in a collision, the chassis is prone to deformation and squeezing the battery, which can cause deformation and damage to the individual battery cells, reducing the battery's reliability and thus reducing the vehicle's reliability.

[0126] Based on the above considerations, and to address the issues of battery cell deformation and damage during vehicle collisions, a battery has been designed after in-depth research. The battery includes: a housing containing an energy chamber with multiple battery cells; and an energy-absorbing structure connected to the energy chamber. Along the length of the battery, the energy-absorbing structure is positioned at least on one side, in front of or behind the multiple battery cells. The length of the battery is parallel to the vehicle's direction of travel. Along the width of the battery, at least a portion of the energy-absorbing structure is located in the middle region of the battery. When a vehicle collision occurs, the energy-absorbing structure can absorb the impact force, reducing the stress on the battery cells, lowering the risk of deformation and damage, improving battery reliability, and thus enhancing vehicle reliability.

[0127] Please refer to Figure 1, which is a schematic diagram of the structure of a vehicle 200 provided in some embodiments of this application. The vehicle 200 can be a gasoline-powered vehicle or a new energy vehicle, such as a pure electric vehicle, a hybrid electric vehicle, or a range-extended electric vehicle. A battery 300 is installed on the chassis 100 of the vehicle 200. The battery 300 can be used to power the vehicle 200; for example, the battery 300 can serve as the operating power source for the vehicle 200. The vehicle 200 may also include a controller 201 and a motor 202. The controller 201 controls the battery 300 to supply power to the motor 202, for example, to meet the power requirements of the vehicle 200 during startup, navigation, and driving.

[0128] In some embodiments of this application, the battery 300 can not only serve as the operating power source for the vehicle 200, but also as the driving power source for the vehicle 200, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 200.

[0129] The battery 300 according to an embodiment of the present application is described below with reference to Figures 1-26. The battery 300 can be installed on the chassis 100 of the vehicle 200.

[0130] As shown in Figures 2 and 13, according to an embodiment of this application, the battery 300 is used in a vehicle 200. The battery 300 includes: a housing 10, an energy chamber 11 formed inside the housing 10, the energy chamber 11 accommodating a plurality of battery cells 12; and an energy-absorbing structure 20 connected to the energy chamber 11. Along the length direction of the battery 300, the energy-absorbing structure 20 is disposed on at least one side in front of or behind the plurality of battery cells 12. The length direction of the battery 300 is parallel to the driving direction of the vehicle 200. Along the width direction of the battery 300, at least a portion of the energy-absorbing structure 20 is located in the middle region of the battery 300.

[0131] The battery 300 includes a housing 10 and an energy-absorbing structure 20. An energy chamber 11 is formed within the housing 10. It should be noted that the energy chamber 11 defines an installation space within which multiple battery cells 12 are installed. The energy-absorbing structure 20 may include an energy-absorbing box 211, an energy-absorbing space, a buffer frame 212, etc. The energy-absorbing structure 20 can be welded to the energy chamber 11, bolted to the energy chamber 11, or indirectly installed to the energy chamber 11 using a universal adapter. Along the length of the battery 300, which is parallel to the driving direction of the vehicle 200 (i.e., along the front-rear direction of the vehicle 200), or as shown in Figure 2 (where the length of the battery 300 is the X direction), the energy-absorbing structure 20 is disposed on at least one side, in front of or behind the plurality of battery cells 12. It should be explained that the energy-absorbing structure 20 may be disposed in front of the plurality of battery cells 12, or behind the plurality of battery cells 12, or both in front of and behind the plurality of battery cells 12. This application uses the example of the energy-absorbing structure 20 being disposed in front of the plurality of battery cells 12 for illustration. As an example, the energy-absorbing structure 20 may be located inside the housing 10. As another example, the energy-absorbing structure 20 may also be located outside the housing 10, and in front of the energy compartment 11. As yet another example, part of the energy-absorbing structure 20 may be located inside the housing 10, and another part may be located outside the housing 10. However, this application is not limited to this, and the energy-absorbing structure 20 may be disposed on at least one side in front of or behind the plurality of battery cells 12.

[0132] Along the width direction of the battery 300, i.e., along the width direction of the vehicle 200 (the width direction of the battery 300 is the Y direction in Figure 2), at least a portion of the energy-absorbing structure 20 is located in the middle region of the battery 300. The energy-absorbing structure 20 can be partially or entirely assembled in the middle region of the battery 300. Along the width direction of the battery 300, the battery 300 has a center line extending along the length direction of the battery 300. The middle region refers to the area covered by a certain distance on both sides of the center line of the battery 300 along the width direction of the battery 300. As an example, the middle region refers to the area covered by a length of 50 cm on both sides of the center line of the battery 300 along the width direction of the battery 300.

[0133] This application uses an example of multiple battery cells 12 with an energy-absorbing structure 20 positioned in front of them for illustration. When the vehicle 200 is moving forward, stationary, or moving backward, and is impacted from the front, for example, when the vehicle 200 is traveling at high speed (e.g., speeds exceeding 100 kph), the energy-absorbing structure 20 absorbs at least a portion of the impact force. The unabsorbed impact force can be transferred to the energy storage chamber 11, the housing 10, and the vehicle 200 chassis 100. The impact force can then be transmitted along the chassis 100 to other structures of the vehicle 200. In terms of components, this disperses the collision force, reducing the risk of concentrated force. Compared with existing technologies, it can reduce the force on the battery cells 12 within the battery 300, reduce the risk of squeezing the battery cells 12, reduce the risk of deformation and damage to the battery cells 12 within the battery 300, and improve the reliability of the battery 300, thereby improving the reliability of the vehicle 200. This helps to solve the reliability problem of the battery 300 when the vehicle 200 is traveling at high speed, and can reduce the risk of deformation and damage to the battery cells 12 within the battery 300 when the vehicle 200 collides at high speed. By placing at least a portion of the energy-absorbing structure 20 in the middle region of the battery 300, when the vehicle 200 is involved in a frontal, rear, or offset collision, the energy-absorbing structure 20 can absorb the collision force to a greater extent after being impacted.

[0134] Similarly, when an energy-absorbing structure 20 is provided behind multiple battery cells 12, when the rear of the vehicle 200 is impacted, the energy-absorbing structure 20 can absorb at least part of the impact force. The impact force not absorbed by the energy-absorbing structure 20 can be transferred to the energy chamber 11, the housing 10, and the chassis 100 of the vehicle 200. The impact force can be transferred along the chassis 100 to other structural components of the vehicle 200, thus dispersing the impact force, reducing the risk of concentrated force, reducing the force on the battery cells 12 inside the battery 300, reducing the risk of squeezing the battery cells 12 inside the battery 300, reducing the risk of deformation and damage to the battery cells 12 inside the battery 300, improving the reliability of the battery 300, and thus improving the reliability of the vehicle 200.

[0135] In the above technical solution, by placing the energy-absorbing structure 20 on at least one side in front of or behind multiple battery cells 12, the energy-absorbing structure 20 can absorb the impact force when the vehicle 200 collides. Compared with the prior art, this reduces the force on the battery cells 12 inside the battery 300, reduces the risk of squeezing the battery cells 12, reduces the risk of deformation and damage to the battery cells 12 inside the battery 300, and improves the reliability of the battery 300, thereby improving the reliability of the vehicle 200. This helps to solve the reliability problem of the battery 300 when the vehicle 200 is traveling at high speed, and reduces the risk of deformation and damage to the battery cells 12 inside the battery 300 when the vehicle 200 collides at high speed. By placing at least a portion of the energy-absorbing structure 20 in the middle area of ​​the battery 300, when the vehicle 200 collides with a frontal collision, a rear collision, or an offset collision, the energy-absorbing structure 20 can absorb the impact force to a greater extent after being impacted.

[0136] According to some embodiments of this application, as shown in FIG2, the energy-absorbing structure 20 includes a first energy-absorbing structure 21, which is connected to the energy chamber 11; at least a portion of the first energy-absorbing structure 21 is located in the middle region of the battery 300 along the width direction of the battery 300.

[0137] The energy-absorbing structure 20 may include a first energy-absorbing structure 21, which may include an energy-absorbing box 211, an energy-absorbing space, etc. The first energy-absorbing structure 21 may be located outside the housing 10 or inside the housing 10. The first energy-absorbing structure 21 is connected to the energy chamber 11. The first energy-absorbing structure 21 may be welded to the energy chamber 11, installed to the energy chamber 11 by bolts, or indirectly assembled to the energy chamber 11 by other structural components. At least a portion of the first energy-absorbing structure 21 is located in the middle region of the battery 300 along its width direction.

[0138] When the vehicle 200 is impacted from the front, the first energy-absorbing structure 21 absorbs at least a portion of the impact force. The remaining impact force can be transferred to the energy chamber 11, the housing 10, and the chassis 100 of the vehicle 200. The impact force can then be transferred along the chassis 100 to other structural components of the vehicle 200, thus dispersing the impact force, reducing the risk of concentrated force, reducing the force on the individual battery cells 12 within the battery 300, reducing the risk of compression of the individual battery cells 12, reducing the risk of deformation and damage to the individual battery cells 12, and improving the reliability of the battery 300. This, in turn, improves the reliability of the vehicle 200 and helps solve the battery 300 reliability problem that exists when the vehicle 200 is traveling at high speeds. By placing at least a portion of the first energy-absorbing structure 21 in the middle region of the battery 300, when the vehicle 200 experiences a frontal, rear, or offset collision, the first energy-absorbing structure 21 can absorb the impact force to a greater extent after being impacted.

[0139] In the above technical solution, the first energy-absorbing structure 21 is connected to the energy chamber 11. When the vehicle 200 is impacted from the front, the first energy-absorbing structure 21 can absorb at least part of the impact force. The impact force not absorbed by the first energy-absorbing structure 21 can be transferred to the energy chamber 11, the housing 10, and the chassis 100 of the vehicle 200. This can reduce the force on the battery cells 12 inside the battery 300, reduce the risk of squeezing the battery cells 12 inside the battery 300, reduce the risk of deformation and damage to the battery cells 12 inside the battery 300, improve the reliability of the battery 300, and thus improve the reliability of the vehicle 200. By placing at least a portion of the first energy-absorbing structure 21 in the middle area of ​​the battery 300, when the vehicle 200 is involved in a frontal, rear, or offset collision, the first energy-absorbing structure 21 can absorb the impact force to a greater extent after being impacted.

[0140] According to some embodiments of this application, as shown in Figures 2 and 4, the energy chamber 11 includes a plurality of side beams 111, which are connected and enclosed to form the energy chamber 11, and the first energy-absorbing structure 21 is fixedly connected to at least one side beam 111.

[0141] The energy chamber 11 may include multiple side beams 111, for example, two, three, four, five, six, or other numbers of side beams 111. These side beams 111 are sequentially connected to form the energy chamber 11, and installation spaces for battery cells 12 are formed between them. This application uses an energy chamber 11 with four side beams 111 as an example for illustration. A first energy-absorbing structure 21 is fixedly connected to at least one side beam 111. The first energy-absorbing structure 21 can be welded to the side beam 111, or it can be bolted to the corresponding side beam 111. The first energy-absorbing structure 21 can be located at the front of the energy chamber 11, at the rear of the energy chamber 11, or both at the front and rear of the energy chamber 11, in which case the first energy-absorbing structure 21 is located outside the energy chamber 11. Alternatively, the first energy-absorbing structure 21 may be located inside the energy chamber 11. The first energy-absorbing structure 21 may be located in front of the multiple battery cells 12, or it may be located behind the multiple battery cells 12, or the first energy-absorbing structure 21 may be provided in front of and behind the multiple battery cells 12. This application uses the example of the first energy-absorbing structure 21 being located in front of the energy chamber 11 for illustration.

[0142] In the above technical solution, the energy chamber 11 includes multiple side beams 111 to realize the arrangement of the energy chamber 11. The first energy-absorbing structure 21 is fixedly connected to at least one side beam 111, so that the first energy-absorbing structure 21 can be fixedly set in the energy chamber 11, thereby realizing the effect of the first energy-absorbing structure 21 being set in the energy chamber 11, improving the positional stability of the first energy-absorbing structure 21, and facilitating the energy absorption of the first energy-absorbing structure 21.

[0143] According to some embodiments of this application, as shown in Figures 2 and 4, at least a portion of the battery cell 12 abuts against at least one side beam 111.

[0144] Among them, after multiple battery cells 12 are installed in the installation space of the energy chamber 11, some battery cells 12 may abut against at least one side beam 111, or all battery cells 12 may abut against at least one side beam 111. The battery cells 12 that abut against the side beam 111 may abut against at least one side beam 111.

[0145] In the above technical solution, by having at least some battery cells 12 abut against at least one side beam 111, the side beam 111 can support the battery cells 12, allowing the battery cells 12 to be securely assembled within the energy compartment 11. Furthermore, this increases the number of battery cells 12, thereby increasing the energy density of the battery 300 and consequently improving the driving range of the vehicle 200. It also facilitates the assembly of the battery 300 within the energy compartment 11.

[0146] According to some embodiments of this application, as shown in Figures 2 and 4, the plurality of side beams 111 include two first side beams 112 and two second side beams 113. The two first side beams 112 are arranged opposite to each other and spaced apart along the length direction of the battery 300, and the two second side beams 113 are arranged opposite to each other and spaced apart along the width direction of the battery 300. The first energy-absorbing structure 21 is connected to at least one of the two first side beams 112.

[0147] The multiple side beams 111 include two first side beams 112 and two second side beams 113. Both first side beams 112 extend along the width direction of the battery 300, and both second side beams 113 extend along the length direction of the battery 300. The two first side beams 112 are arranged opposite to each other and spaced apart along the length direction of the battery 300. The spacing between the two first side beams 112 can be reasonably designed according to the size of the energy chamber 11. Along the length direction of the battery 300, the orthographic projections of the two first side beams 112 can have overlapping areas. The two second side beams 113 are arranged opposite to each other and spaced apart along the width direction of the battery 300. The spacing between the two second side beams 113 can be reasonably designed according to the size of the energy chamber 11. Along the width direction of the battery 300, the orthographic projections of the two second side beams 113 can have overlapping areas. The second side beams 113 can serve as the outer frame of the housing 10. Each first side beam 112 is fixedly connected to two second side beams 113. The first side beam 112 can be welded to the second side beam 113, or it can be connected to the second side beam 113 by bolts. The first energy-absorbing structure 21 is connected to at least one of the two first side beams 112. This can be understood as the first side beam 112 located at the front being connected to the first energy-absorbing structure 21, the first side beam 112 located at the rear being connected to the first energy-absorbing structure 21, or both first side beams 112 being connected to the first energy-absorbing structure 21. The first energy-absorbing structure 21 connected to the front first side beam 112 is located in front of the front first side beam 112, and the first energy-absorbing structure 21 connected to the rear first side beam 112 is located behind the rear first side beam 112. This application uses the example of the front first side beam 112 being connected to the first energy-absorbing structure 21 for illustration. Alternatively, it can be understood that the first energy-absorbing structure 21 is connected to at least one first side beam 112.

[0148] In the above technical solution, by setting two first side beams 112 and two second side beams 113, the energy chamber 11 can be formed, and the structure of the energy chamber 11 can be simplified, making it easier to manufacture. Furthermore, by connecting the first energy-absorbing structure 21 to at least one of the two first side beams 112, the first energy-absorbing structure 21 can absorb at least part of the impact force after being impacted. The impact force not absorbed by the first energy-absorbing structure 21 can be transferred to the first side beams 112, and then to the two second side beams 113. The impact force can then be transferred along the energy chamber 11 to the housing 10 and other structural components of the vehicle 200, thus dispersing the impact force, reducing the risk of concentrated force, further reducing the force on the battery cells 12 inside the battery 300, further reducing the risk of squeezing the battery cells 12 inside the battery 300, further reducing the risk of deformation and damage to the battery cells 12 inside the battery 300, further improving the reliability of the battery 300, and thus further improving the reliability of the vehicle 200.

[0149] According to some embodiments of this application, as shown in Figures 2 and 4, along the length direction of the battery 300, the orthographic projection of the first energy-absorbing structure 21 and the orthographic projection of the first side beam 112 have an overlapping area.

[0150] Along the length of the battery 300, the orthographic projection of the first energy-absorbing structure 21 overlaps with the orthographic projection of the first side beam 112. The orthographic projection of the first energy-absorbing structure 21 connected to the front first side beam 112 along the length of the battery 300 overlaps with the orthographic projection of the front first side beam 112. The orthographic projection of the first energy-absorbing structure 21 connected to the rear first side beam 112 along the length of the battery 300 overlaps with the orthographic projection of the rear first side beam 112.

[0151] In the above technical solution, since the orthographic projection of the first energy-absorbing structure 21 and the orthographic projection of the corresponding first side beam 112 overlap along the length direction of the battery 300, when the first energy-absorbing structure 21 is subjected to an impact force, it is beneficial to improve the force transmission performance between the first energy-absorbing structure 21 and the first side beam 112. The first side beam 112 can reliably support the first energy-absorbing structure 21, which is beneficial to improve the supporting effect of the first side beam 112 on the first energy-absorbing structure 21 and improve the stability of the first energy-absorbing structure 21 when subjected to an external impact.

[0152] According to some embodiments of this application, as shown in Figures 2 and 4, along the length direction of the battery 300, the area of ​​the orthographic projection of the first energy-absorbing structure 21 is S1, and the area of ​​the overlapping region between the orthographic projection of the first energy-absorbing structure 21 and the orthographic projection of the first side beam 112 is S2, satisfying: 10% ≤ S2 / S1 ≤ 100%.

[0153] Wherein, along the length direction of the battery 300, the area of ​​the orthographic projection of the first energy-absorbing structure 21 is S1, and the area of ​​the overlapping region between the orthographic projection of the first energy-absorbing structure 21 and the orthographic projection of the first side beam 112 is S2. The unit of the area of ​​the orthographic projection of the first energy-absorbing structure 21 can be reasonably selected and designed according to the actual situation, and the unit of the area of ​​the overlapping region between the orthographic projection of the first energy-absorbing structure 21 and the orthographic projection of the first side beam 112 can be reasonably selected and designed according to the actual situation. S2 / S1 can be values ​​such as 10%, 11%, 15%, 20%, 25%, 30%, 40%, 43%, 45%, 50%, 55%, 60%, 61%, 70%, 80%, 90%, 93%, 95%, 100%, etc. When S2 / S1 is less than 10%, the area of ​​the overlapping region between the orthographic projection of the first energy-absorbing structure 21 and the orthographic projection of the first side beam 112 is small. When the first energy-absorbing structure 21 is subjected to an impact force, the force transmission performance between the first energy-absorbing structure 21 and the first side beam 112 is poor, the supporting effect of the first side beam 112 on the first energy-absorbing structure 21 is weak, and the stability of the first energy-absorbing structure 21 under external impact is poor. Therefore, by setting 10% ≤ S2 / S1 ≤ 100%, the area of ​​the overlapping region between the orthographic projection of the first energy-absorbing structure 21 and the first side beam 112 is appropriate. When the first energy-absorbing structure 21 is subjected to an impact force, it is more conducive to improving the force transmission performance between the first energy-absorbing structure 21 and the first side beam 112. The first side beam 112 can more reliably support the first energy-absorbing structure 21, further improving the supporting effect of the first side beam 112 on the first energy-absorbing structure 21 and enhancing the stability of the first energy-absorbing structure 21 under external impact.

[0154] In the above technical solution, by using 10%≤S2 / S1≤100%, the area of ​​the overlapping region between the orthographic projection of the first energy-absorbing structure 21 and the orthographic projection of the first side beam 112 is appropriate. When the first energy-absorbing structure 21 is subjected to a collision force, it is more conducive to improving the force transmission performance between the first energy-absorbing structure 21 and the first side beam 112. The first side beam 112 can more reliably support the first energy-absorbing structure 21, which is more conducive to improving the supporting role of the first side beam 112 on the first energy-absorbing structure 21, and further improving the stability of the first energy-absorbing structure 21 when subjected to an external collision.

[0155] According to some embodiments of this application, as shown in Figures 2 and 4, the orthographic projection of the first energy-absorbing structure 21 is completely located within the orthographic projection of the first side beam 112.

[0156] In this configuration, along the length of the battery 300, the orthographic projection of the first energy-absorbing structure 21 lies entirely within the orthographic projection of the first side beam 112 connected to it. Similarly, the orthographic projection of the first energy-absorbing structure 21 connected to the front first side beam 112 along the length of the battery 300 lies entirely within the orthographic projection of the front first side beam 112, and the orthographic projection of the first energy-absorbing structure 21 connected to the rear first side beam 112 along the length of the battery 300 lies entirely within the orthographic projection of the rear first side beam 112. Furthermore, along the length of the battery 300, the orthographic projection of the first energy-absorbing structure 21 lies entirely within the orthographic projection of the corresponding first side beam 112, thus ensuring that the first energy-absorbing structure 21 and the corresponding first side beam 112 are directly opposite each other along the length of the battery 300.

[0157] In the above technical solution, by ensuring that the orthographic projection of the first energy-absorbing structure 21 is completely within the orthographic projection of the first side beam 112 along the length of the battery 300, the first energy-absorbing structure 21 is more likely to be subjected to an impact force, which is more conducive to improving the force transmission performance between the first energy-absorbing structure 21 and the first side beam 112. The first side beam 112 can more reliably support the first energy-absorbing structure 21, which is more conducive to improving the supporting effect of the first side beam 112 on the first energy-absorbing structure 21, and further improving the stability of the first energy-absorbing structure 21 when subjected to an external impact.

[0158] According to some embodiments of this application, as shown in FIG17, the energy-absorbing structure 20 may include only one first energy-absorbing structure 21.

[0159] According to some embodiments of this application, the shape of the cross section of the first energy-absorbing structure 21 perpendicular to the height direction of the battery 300 can be a triangle, a rectangle, a trapezoid, or other polygons.

[0160] According to some embodiments of this application, as shown in FIG18, the energy-absorbing structure 20 includes a plurality of first energy-absorbing structures 21 arranged along the length direction of the battery 300, and adjacent first energy-absorbing structures 21 are connected along the length direction of the battery 300.

[0161] The energy-absorbing structure 20 may include a plurality of first energy-absorbing structures 21, which are arranged along the length of the battery 300. Adjacent first energy-absorbing structures 21 are connected along the length of the battery 300, as shown in Figure 18. Adjacent first energy-absorbing structures 21 may be directly connected or connected by welding or bolting. However, this application is not limited to this. Adjacent first energy-absorbing structures 21 may also be indirectly connected by beams. The first energy-absorbing structure 21 and the beam are connected by welding or bolting.

[0162] In the above technical solution, multiple first energy-absorbing structures 21 are arranged along the length direction of the battery 300 and connected to each other along the length direction of the battery 300. When the energy-absorbing structure 20 is impacted, the multiple first energy-absorbing structures 21 can absorb the impact force, achieve multi-level energy absorption effect, improve the energy absorption performance of the energy-absorbing structure 20, reduce the impact force transmitted to the energy chamber 11, further reduce the force on the battery cells 12 inside the battery 300, further reduce the risk of squeezing the battery cells 12 inside the battery 300, further reduce the risk of deformation and damage of the battery cells 12 inside the battery 300, further improve the reliability of the battery 300, and thus further improve the reliability of the vehicle 200.

[0163] According to some embodiments of this application, as shown in FIG18, the energy-absorbing structure 20 further includes a first connecting beam 30, and adjacent first energy-absorbing structures 21 along the length direction of the battery 300 are connected by the first connecting beam 30.

[0164] The energy-absorbing structure 20 may also include a first connecting beam 30. Along the length of the battery 300, adjacent first energy-absorbing structures 21 are connected by the first connecting beam 30. The first connecting beam 30 is connected between adjacent first energy-absorbing structures 21. The first energy-absorbing structure 21 and the first connecting beam 30 are connected by welding or bolting.

[0165] In the above technical solution, by setting the first connecting beam 30 to connect the adjacent first energy-absorbing structures 21 along the length direction of the battery 300, the connection strength of the adjacent first energy-absorbing structures 21 can be improved, the structural strength of the energy-absorbing structure 20 can be improved, the stability of the energy-absorbing structure 20 when subjected to external force collision can be further improved, the energy absorption performance of the energy-absorbing structure 20 can be further improved, and when the energy-absorbing structure 20 is impacted, the impact force transmitted to the energy chamber 11 can be further reduced.

[0166] According to some embodiments of this application, as shown in FIG18, along the direction away from the energy chamber 11, the dimensions of each first energy-absorbing structure 21 decrease sequentially along the width direction of the battery 300.

[0167] In this configuration, the first energy-absorbing structures 21 are parallel to the driving direction of the vehicle 200 in the direction away from the energy storage 11. When the multiple first energy-absorbing structures 21 are disposed on the front side of the energy storage 11, in other words, as the vehicle 200 moves forward, the dimensions of each first energy-absorbing structure 21 decrease sequentially along the width direction of the battery 300 in the direction away from the energy storage 11, i.e., from the rear to the front of the vehicle 200. When the multiple first energy-absorbing structures 21 are disposed on the rear side of the energy storage 11, as the vehicle 200 moves backward, the dimensions of each first energy-absorbing structure 21 decrease sequentially along the width direction of the battery 300 in the direction of the vehicle 200's driving direction, i.e., from the front to the rear of the vehicle 200.

[0168] In the above technical solution, by setting the dimensions of each first energy-absorbing structure 21 along the width direction of the battery 300 to decrease sequentially along the direction away from the energy chamber 11, the first energy-absorbing structure 21 with the largest dimension along the width direction of the battery 300 can be connected to the energy chamber 11. This is beneficial to increasing the connection area between the first energy-absorbing structure 21 and the energy chamber 11. When the first energy-absorbing structure 21 is subjected to an impact force, it is more beneficial to improve the force transmission performance between the first energy-absorbing structure 21 and the first side beam 112. The energy chamber 11 can more reliably support the first energy-absorbing structure 21, which is more beneficial to improving the supporting effect of the energy chamber 11 on the first energy-absorbing structure 21, and further improving the stability of the first energy-absorbing structure 21 when subjected to an external impact.

[0169] According to some embodiments of this application, the energy-absorbing structure 20 includes a plurality of first energy-absorbing structures 21 arranged along the width direction of the battery 300.

[0170] The energy-absorbing structure 20 includes multiple first energy-absorbing structures 21, which can be arranged sequentially along the width direction of the battery 300. Alternatively, some of the multiple first energy-absorbing structures 21 can be arranged sequentially along the width direction of the battery 300, while other parts of the multiple first energy-absorbing structures 21 can be arranged along the length direction of the battery 300. Alternatively, the multiple first energy-absorbing structures 21 can form multiple energy-absorbing groups, each energy-absorbing group including multiple first energy-absorbing structures 21, with the multiple first energy-absorbing structures 21 in each group arranged along the width direction of the battery 300, and the multiple energy-absorbing groups arranged sequentially along the length direction of the battery 300. Adjacent energy-absorbing groups can be connected by a first connecting beam 30.

[0171] As shown in Figure 19, as an example, the energy-absorbing structure 20 includes four first energy-absorbing structures 21. Three of the first energy-absorbing structures 21 are arranged sequentially along the width direction of the battery 300 to form an energy-absorbing group. The other first energy-absorbing structure 21 and the energy-absorbing group are arranged along the length direction of the battery 300 and are connected to the three first energy-absorbing structures 21 arranged along the width direction of the battery 300 through the first connecting beam 30.

[0172] As shown in Figures 20 and 21, as another example, multiple first energy-absorbing structures 21 form multiple energy-absorbing groups. Each energy-absorbing group includes multiple first energy-absorbing structures 21. The multiple first energy-absorbing structures 21 in each group are arranged along the width direction of the battery 300, and the multiple energy-absorbing groups are arranged sequentially along the length direction of the battery 300. Adjacent energy-absorbing groups can be connected by a first connecting beam 30. As shown in Figure 20, the energy-absorbing structure 20 includes five first energy-absorbing structures 21. The five first energy-absorbing structures 21 form two energy-absorbing groups. One energy-absorbing group includes three first energy-absorbing structures 21, and the other energy-absorbing group includes two first energy-absorbing structures 21. As shown in Figure 21, the energy-absorbing structure 20 includes four first energy-absorbing structures 21. The four first energy-absorbing structures 21 form two energy-absorbing groups, and each energy-absorbing group includes two first energy-absorbing structures 21.

[0173] In the above technical solution, by including multiple first energy-absorbing structures 21 arranged along the width direction of the battery 300, the energy absorption performance of the energy-absorbing structure 20 can be improved. Furthermore, the multiple first energy-absorbing structures 21 arranged along the width direction of the battery 300 can be connected to the energy chamber 11, which helps to increase the connection area between the energy-absorbing structure 20 and the energy chamber 11. When the energy-absorbing structure 20 is subjected to an impact force, it is more conducive to improving the force transmission performance between the energy-absorbing structure 20 and the energy chamber 11. The energy chamber 11 can more reliably support the energy-absorbing structure 20, which is more conducive to improving the supporting role of the energy chamber 11 on the energy-absorbing structure 20, and further improving the stability of the energy-absorbing structure 20 when subjected to an external impact.

[0174] According to some embodiments of this application, a plurality of first energy-absorbing structures 21 are arranged at intervals along the width direction of the battery 300; or, at least two first energy-absorbing structures 21 are arranged crosswise; or at least two first energy-absorbing structures 21 that are adjacent along the width direction of the battery 300 are connected.

[0175] As an example, a plurality of first energy-absorbing structures 21 are arranged at intervals along the width direction of the battery 300, wherein when the plurality of first energy-absorbing structures 21 are arranged along the width direction of the battery 300, two adjacent first energy-absorbing structures 21 arranged along the width direction of the battery 300 are spaced apart.

[0176] By arranging multiple first energy-absorbing structures 21 at intervals along the width direction of the battery 300, the risk of interference between adjacent first energy-absorbing structures 21 arranged along the width direction of the battery 300 can be reduced. When the multiple first energy-absorbing structures 21 arranged at intervals along the width direction of the battery 300 are connected to the energy chamber 11, the multiple first energy-absorbing structures 21 transmit the force to different positions of the energy chamber 11, so that the force is distributed and transmitted to the energy chamber 11, reducing the risk of stress concentration in the energy chamber 11, further reducing the risk of deformation and squeezing of the battery cells 12 inside the battery 300 by the energy chamber 11. In addition, the energy chamber 11 can more reliably support the energy-absorbing structure 20, which is more conducive to improving the supporting effect of the energy chamber 11 on the energy-absorbing structure 20, and further improving the stability of the energy-absorbing structure 20 when subjected to external force collision.

[0177] As another example, at least two first energy-absorbing structures 21 are arranged in a cross arrangement. Specifically, at least two of the multiple first energy-absorbing structures 21 are arranged in a cross arrangement. By having at least two first energy-absorbing structures 21 arranged in a cross arrangement, the structural strength of the energy-absorbing structure 20 can be improved, allowing for a reliable connection between the energy-absorbing structure 20 and the energy chamber 11. This further enhances the supporting effect of the energy chamber 11 on the energy-absorbing structure 20, thereby improving the stability of the energy-absorbing structure 20 when subjected to external impact.

[0178] As another example, at least two adjacent first energy-absorbing structures 21 along the width direction of the battery 300 are connected. When multiple first energy-absorbing structures 21 are arranged along the width direction of the battery 300, at least two adjacent first energy-absorbing structures 21 are connected. Adjacent first energy-absorbing structures 21 can be directly connected, or they can be indirectly connected via an adapter. Connecting at least two adjacent first energy-absorbing structures 21 along the width direction of the battery 300 enhances the structural strength of the energy-absorbing structure 20, ensures a reliable connection between the energy-absorbing structure 20 and the energy chamber 11, and improves the supporting effect of the energy chamber 11 on the energy-absorbing structure 20, further enhancing the stability of the energy-absorbing structure 20 under external impact.

[0179] According to some embodiments of this application, as shown in Figures 2-13, the energy-absorbing structure 20 further includes a second energy-absorbing structure 22, which is located between the first energy-absorbing structure 21 and the energy chamber 11 along the length direction of the battery 300.

[0180] The energy-absorbing structure 20 may further include a second energy-absorbing structure 22, which may include an energy-absorbing box 211, an energy-absorbing space, a buffer frame 212, etc. The second energy-absorbing structure 22 can be located inside or outside the housing 10. For example, the first energy-absorbing structure 21 may be located outside the housing 10, and the second energy-absorbing structure 22 may be located inside the housing 10. Alternatively, both the first and second energy-absorbing structures 21 and 22 may be located inside the housing 10. As another example, both the first and second energy-absorbing structures 21 and 22 may be located outside the housing 10. Along the length of the battery 300, the second energy-absorbing structure 22 is located between the first energy-absorbing structure 21 and the energy chamber 11. The second energy-absorbing structure 22 can be connected to the energy chamber 11, directly connected to the first energy-absorbing structure 21, or indirectly connected to the first energy-absorbing structure 21 via an adapter. The second energy-absorbing structure 22 can be located between the first side beam 112 of the energy chamber 11 and the first energy-absorbing structure 21.

[0181] In the above technical solution, by positioning the second energy-absorbing structure 22 between the first energy-absorbing structure 21 and the energy chamber 11, the energy-absorbing structure 20 can have a multi-level energy absorption effect. After the energy-absorbing structure 20 is impacted, the first energy-absorbing structure 21 can absorb at least part of the impact force. The impact force not absorbed by the first energy-absorbing structure 21 can be transferred to the second energy-absorbing structure 22. The second energy-absorbing structure 22 further absorbs the impact force, which can further reduce the force on the battery cell 12 inside the battery 300, further reduce the risk of deformation and damage to the battery cell 12 inside the battery 300, further improve the reliability of the battery 300, and thus further improve the reliability of the vehicle 200.

[0182] According to some embodiments of this application, as shown in Figures 2-13, the second energy-absorbing structure 22 is connected to the first energy-absorbing structure 21, and the second energy-absorbing structure 22 is connected to the energy chamber 11.

[0183] The second energy-absorbing structure 22 can be connected between the first energy-absorbing structure 21 and the energy chamber 11. Along the length of the battery 300, the second energy-absorbing structure 22 can be located between the first energy-absorbing structure 21 and the energy chamber 11. The second energy-absorbing structure 22 can be connected to at least one side beam 111 of the energy chamber 11. Further, the second energy-absorbing structure 22 can be connected between the first energy-absorbing structure 21 and the first side beam 112 of the energy chamber 11. When the second energy-absorbing structure 22 is an energy-absorbing box 211, the second energy-absorbing structure 22 can be connected to the first side beam 112 of the energy chamber 11. The second energy-absorbing structure 22 can be connected to the first side beam 112 by welding, bolting, or other means. When the second energy-absorbing structure 22 is a buffer frame 212, the second energy-absorbing structure 22 can be connected to the first side beam 112 of the energy chamber 11, the second energy-absorbing structure 22 can also be connected to the second side beam 113 of the energy chamber 11, and the second energy-absorbing structure 22 can also be connected to both the first side beam 112 and the second side beam 113 of the energy chamber 11.

[0184] In the above technical solution, the second energy-absorbing structure 22 is connected to the first energy-absorbing structure 21 and the energy chamber 11. After the energy-absorbing structure 20 is impacted, the first energy-absorbing structure 21 can absorb at least part of the impact force. The impact force not absorbed by the first energy-absorbing structure 21 can be transferred to the second energy-absorbing structure 22. The second energy-absorbing structure 22 further absorbs the impact force. The impact force not absorbed by the energy-absorbing structure 20 is transferred to the energy chamber 11. The impact force can be transferred along the energy chamber 11 to the housing 10 and other structural components of the vehicle 200, thereby dispersing the impact force, reducing the risk of concentrated force, further reducing the force on the battery cell 12, further reducing the risk of deformation and damage to the battery cell 12, further improving the reliability of the battery 300, and thus further improving the reliability of the vehicle 200.

[0185] According to some embodiments of this application, as shown in FIG2, the energy chamber 11 includes a plurality of side beams 111, which are connected and enclosed to form the energy chamber 11, and the second energy-absorbing structure 22 is fixedly connected to the side beams 111.

[0186] The energy chamber 11 may include multiple side beams 111, for example, two, three, four, five, six, or other numbers of side beams 111. These multiple side beams 111 are sequentially connected to form the energy chamber 11, and installation spaces for battery cells 12 are formed between them. This application uses an energy chamber 11 with four side beams 111 as an example for illustration. A second energy-absorbing structure 22 is fixedly connected to at least one side beam 111. A first energy-absorbing structure 21 may be welded to the side beam 111, or it may be bolted to the corresponding side beam 111. When the second energy-absorbing structure 22 is an energy-absorbing box 211, it can be connected to the first side beam 112 of the energy chamber 11. The second energy-absorbing structure 22 can be connected to the first side beam 112 of the energy chamber 11 by welding, bolting, or other methods. When the second energy-absorbing structure 22 is a buffer frame 212, the second energy-absorbing structure 22 can be connected to the first side beam 112 of the energy chamber 11, the second energy-absorbing structure 22 can also be connected to the second side beam 113 of the energy chamber 11, and the second energy-absorbing structure 22 can also be connected to the first side beam 112 and the second side beam 113 of the energy chamber 11.

[0187] In the above technical solution, the second energy-absorbing structure 22 is connected to the side beam 111 of the energy chamber 11. After the energy-absorbing structure 20 is impacted, the first energy-absorbing structure 21 can absorb at least part of the impact force. The impact force not absorbed by the first energy-absorbing structure 21 can be transferred to the second energy-absorbing structure 22. The second energy-absorbing structure 22 further absorbs the impact force. The impact force not absorbed by the second energy-absorbing structure 22 is transferred to the energy chamber 11. The impact force can be transferred along the energy chamber 11 to the box 10 and other structural components of the vehicle 200, so that the impact force is dispersed, reducing the risk of concentrated force. This can further reduce the force on the battery cell 12, further reduce the risk of deformation and damage to the battery cell 12, further improve the reliability of the battery 300, and thus further improve the reliability of the vehicle 200.

[0188] According to some embodiments of this application, as shown in FIG2, the battery 300 further includes a conductive beam 40 located between the first energy-absorbing structure 21 and the second energy-absorbing structure 22, and the conductive beam 40 connects the first energy-absorbing structure 21 and the second energy-absorbing structure 22.

[0189] The conductive beam 40 extends along the width of the battery 300. The conductive beam 40 can be located between the first energy-absorbing structure 21 and the second energy-absorbing structure 22. The conductive beam 40 is connected to the first energy-absorbing structure 21 and the second energy-absorbing structure 22. The first energy-absorbing structure 21 can be fixedly connected to the conductive beam 40 by welding, bolting or other means. The second energy-absorbing structure 22 can be fixedly connected to the conductive beam 40 by welding, bolting or other means.

[0190] In the above technical solution, the first energy-absorbing structure 21 and the second energy-absorbing structure 22 are connected by the transmission beam 40. After the first energy-absorbing structure 21 is impacted, the impact force can be transmitted to the second energy-absorbing structure 22 through the transmission beam 40, so as to realize the effect of transmitting force from the first energy-absorbing structure 21 to the second energy-absorbing structure 22, thereby giving the energy-absorbing structure 20 a multi-level energy absorption effect.

[0191] According to some embodiments of this application, as shown in FIG3, when the energy-absorbing structure 20 is located in front of the energy chamber 11, a connecting portion 213 can be provided at the rear end of the first energy-absorbing structure 21. The first energy-absorbing structure 21 is fixedly connected to the conduction beam 40 through the connecting portion 213. The connecting portion 213 and the first energy-absorbing structure 21 can be fixed by welding or bolting, and the connecting portion 213 and the conduction beam 40 can be fixed by welding or bolting. The connecting portion 213 is a plate-shaped structure, including an upper connecting plate, a middle connecting plate, and a lower connecting plate. The middle connecting plate is connected between the upper connecting plate and the lower connecting plate. The upper connecting plate overlaps with the upper surface of the conduction beam 40, the middle connecting plate overlaps with the front side of the conduction beam 40, and the lower connecting plate overlaps with the lower surface of the conduction beam 40. By providing the connecting portion 213, the contact area between the first energy-absorbing structure 21 and the conduction beam 40 can be increased, thereby increasing the stress-bearing area of ​​the first energy-absorbing structure 21.

[0192] According to some embodiments of this application, as shown in FIG2, the conductive beam 40 extends along the width direction of the battery 300; the conductive beam 40 is connected to the housing 10, or the conductive beam 40 forms part of the housing 10.

[0193] The conductive beam 40 extends along the width of the battery 300 and is connected to the housing 10. The conductive beam 40 can be connected to the outer frame of the housing 10. When the two second side beams 113 form the outer frame of the housing 10, the conductive beam 40 can be connected between the two second side beams 113. Alternatively, the conductive beam 40 can form part of the housing 10; that is, it can be understood as part of the housing 10, i.e., part of the outer frame of the housing 10.

[0194] In the above technical solution, the transmission beam 40, connected to the housing 10, further improves the reliability of the connection between the energy-absorbing structure 20 and the energy chamber 11, reduces the vibration risk of the energy-absorbing structure 20, and supports the energy-absorbing structure 20, further improving its stability when subjected to external impact. The transmission beam 40, forming part of the housing 10, simplifies the structure of the housing 10 and facilitates its lightweight design.

[0195] According to some embodiments of this application, as shown in Figures 2 and 4, along the length direction of the battery 300, the orthographic projection of the first energy-absorbing structure 21 and the orthographic projection of the second energy-absorbing structure 22 have overlapping areas.

[0196] The second energy-absorbing structure 22 is connected between the first energy-absorbing structure 21 and the corresponding side beams 111 of the energy chamber 11. Along the length of the battery 300, the orthographic projection of the first energy-absorbing structure 21 and the orthographic projection of the second energy-absorbing structure 22 overlap. The orthographic projections of the first energy-absorbing structure 21 and the second energy-absorbing structure 22 connected to the front first side beam 112 along the length of the battery 300 overlap. The orthographic projections of the first energy-absorbing structure 21 and the second energy-absorbing structure 22 connected to the rear first side beam 112 along the length of the battery 300 overlap.

[0197] In the above technical solution, along the length of the battery 300, the orthographic projection of the first energy-absorbing structure 21 and the orthographic projection of the corresponding second energy-absorbing structure 22 have an overlapping area. When the first energy-absorbing structure 21 is subjected to an impact force, it is beneficial to improve the force transmission performance between the first energy-absorbing structure 21 and the second energy-absorbing structure 22. The second energy-absorbing structure 22 can reliably support the first energy-absorbing structure 21, which is beneficial to improve the supporting effect of the second energy-absorbing structure 22 on the first energy-absorbing structure 21 and improve the stability of the first energy-absorbing structure 21 when subjected to an external impact.

[0198] According to some embodiments of this application, as shown in Figures 2 and 4, the area of ​​the orthographic projection of the first energy-absorbing structure 21 is S1, and the area of ​​the overlapping region of the orthographic projection of the first energy-absorbing structure 21 and the orthographic projection of the second energy-absorbing structure 22 is S3, satisfying: 20% ≤ S3 / S1 ≤ 100%.

[0199] Along the length of the battery 300, the area of ​​the orthographic projection of the first energy-absorbing structure 21 is S1, and the area of ​​the overlapping region between the orthographic projections of the first energy-absorbing structure 21 and the second energy-absorbing structure 22 is S3. The unit of the area of ​​the orthographic projection of the first energy-absorbing structure 21 can be reasonably selected and designed according to the actual situation, and the unit of the area of ​​the overlapping region between the orthographic projections of the first energy-absorbing structure 21 and the second energy-absorbing structure 22 can be reasonably selected and designed according to the actual situation. S3 / S1 can be values ​​such as 20%, 25%, 30%, 45%, 50%, 52%, 55%, 60%, 65%, 67%, 70%, 74%, 80%, 85%, 90%, 96%, 100%, etc. When S3 / S1 is less than 20%, the area of ​​the overlapping region between the orthographic projections of the first energy-absorbing structure 21 and the second energy-absorbing structure 22 is small. When the first energy-absorbing structure 21 is subjected to an impact force, the force transmission performance between the first energy-absorbing structure 21 and the second energy-absorbing structure 22 is poor, the support effect of the second energy-absorbing structure 22 on the first energy-absorbing structure 21 is weak, and the stability of the first energy-absorbing structure 21 is poor when subjected to an external impact. Therefore, when S3 / S1 ≥ 20%, the area of ​​the overlapping region between the orthographic projections of the first energy-absorbing structure 21 and the second energy-absorbing structure 22 is appropriate. When the first energy-absorbing structure 21 is subjected to an impact force, it is more conducive to improving the force transmission performance between the first energy-absorbing structure 21 and the second energy-absorbing structure 22. The second energy-absorbing structure 22 can more reliably support the first energy-absorbing structure 21, which is more conducive to improving the support effect of the second energy-absorbing structure 22 on the first energy-absorbing structure 21, further improving the stability of the first energy-absorbing structure 211 when subjected to an external impact.

[0200] In the above technical solution, by using 20%≤S3 / S1≤100%, the area of ​​the overlapping region between the orthographic projection of the first energy-absorbing structure 21 and the orthographic projection of the second energy-absorbing structure 22 is appropriate. When the first energy-absorbing structure 21 is subjected to a collision force, it is more conducive to improving the force transmission performance between the first energy-absorbing structure 21 and the second energy-absorbing structure 22. The second energy-absorbing structure 22 can more reliably support the first energy-absorbing structure 21, which is more conducive to improving the supporting effect of the second energy-absorbing structure 22 on the first energy-absorbing structure 21, and further improving the stability of the first energy-absorbing structure 21 when subjected to an external collision.

[0201] According to some embodiments of this application, the orthographic projection of the first energy-absorbing structure 21 is completely within the orthographic projection of the second energy-absorbing structure 22.

[0202] Along the length of the battery 300, the orthographic projection of the first energy-absorbing structure 21 and the orthographic projection of the connected second energy-absorbing structure 22 overlap. The orthographic projection of the first energy-absorbing structure 21 is completely within the orthographic projection range of the corresponding second energy-absorbing structure 22, so that the first energy-absorbing structure 21 and the connected second energy-absorbing structure 22 are arranged facing each other along the length of the battery 300.

[0203] In the above technical solution, along the length of the battery 300, the orthographic projection of the first energy-absorbing structure 21 is completely within the orthographic projection of the second energy-absorbing structure 22. When the first energy-absorbing structure 21 is subjected to an impact force, it is more conducive to improving the force transmission performance between the first energy-absorbing structure 21 and the second energy-absorbing structure 22. The second energy-absorbing structure 22 can more reliably support the first energy-absorbing structure 21, which is more conducive to improving the supporting effect of the second energy-absorbing structure 22 on the first energy-absorbing structure 21, and further improving the stability of the first energy-absorbing structure 21 when subjected to an external impact.

[0204] According to some embodiments of this application, as shown in Figures 2 and 4, along the length direction of the battery 300, the orthographic projection of the second energy-absorbing structure 22 and the orthographic projection of the first side beam 112 have an overlapping area.

[0205] Along the length of the battery 300, the orthographic projection of the second energy-absorbing structure 22 overlaps with the orthographic projection of the corresponding first side beam 112. The orthographic projection of the second energy-absorbing structure 22 connected to the front first side beam 112 along the length of the battery 300 overlaps with the orthographic projection of the front first side beam 112. The orthographic projection of the second energy-absorbing structure 22 connected to the rear first side beam 112 along the length of the battery 300 overlaps with the orthographic projection of the rear first side beam 112.

[0206] In the above technical solution, since the orthographic projection of the second energy-absorbing structure 22 and the orthographic projection of the corresponding first side beam 112 overlap along the length direction of the battery 300, when the second energy-absorbing structure 22 is subjected to an impact force, it is beneficial to improve the force transmission performance between the second energy-absorbing structure 22 and the first side beam 112. The first side beam 112 can reliably support the second energy-absorbing structure 22, which is beneficial to improve the supporting effect of the first side beam 112 on the second energy-absorbing structure 22 and improve the stability of the second energy-absorbing structure 22 when subjected to an external impact.

[0207] According to some embodiments of this application, along the length direction of the battery 300, the area of ​​the orthographic projection of the second energy-absorbing structure 22 is S4, and the area of ​​the overlapping region between the orthographic projection of the second energy-absorbing structure 22 and the orthographic projection of the first side beam 112 is S5, satisfying: 10% ≤ S5 / S4 ≤ 100%.

[0208] Wherein, along the length direction of the battery 300, the area of ​​the orthographic projection of the second energy-absorbing structure 22 is S4, and the area of ​​the overlapping region between the orthographic projection of the second energy-absorbing structure 22 and the orthographic projection of the first side beam 112 is S5. The unit of the area of ​​the orthographic projection of the second energy-absorbing structure 22 can be reasonably selected and designed according to the actual situation, and the unit of the area of ​​the overlapping region between the orthographic projection of the second energy-absorbing structure 22 and the orthographic projection of the first side beam 112 can be reasonably selected and designed according to the actual situation. S5 / S4 can be values ​​such as 10%, 11%, 15%, 20%, 25%, 30%, 40%, 43%, 45%, 50%, 55%, 60%, 61%, 70%, 80%, 90%, 93%, 95%, 100%, etc. When S5 / S4 is less than 10%, the area of ​​the overlapping region between the orthographic projection of the second energy-absorbing structure 22 and the orthographic projection of the first side beam 112 is small. When the second energy-absorbing structure 22 is subjected to impact force, the force transmission performance between the second energy-absorbing structure 22 and the first side beam 112 is poor, the supporting effect of the first side beam 112 on the second energy-absorbing structure 22 is weak, and the stability of the second energy-absorbing structure 22 under external impact is poor. Therefore, by setting 10% ≤ S5 / S4 ≤ 100%, the area of ​​the overlapping region between the orthographic projection of the second energy-absorbing structure 22 and the first side beam 112 is appropriate. When the second energy-absorbing structure 22 is subjected to impact force, it is more conducive to improving the force transmission performance between the second energy-absorbing structure 22 and the first side beam 112. The first side beam 112 can more reliably support the second energy-absorbing structure 22, further improving the supporting effect of the first side beam 112 on the second energy-absorbing structure 22, and further improving the stability of the second energy-absorbing structure 22 under external impact.

[0209] In the above technical solution, by using 10%≤S5 / S4≤100%, the area of ​​the overlapping region between the orthographic projection of the second energy-absorbing structure 22 and the orthographic projection of the first side beam 112 is appropriate. When the second energy-absorbing structure 22 is subjected to a collision force, it is more conducive to improving the force transmission performance between the second energy-absorbing structure 22 and the first side beam 112. The first side beam 112 can more reliably support the second energy-absorbing structure 22, which is more conducive to improving the supporting role of the first side beam 112 on the second energy-absorbing structure 22, and further improving the stability of the second energy-absorbing structure 22 when subjected to an external collision.

[0210] According to some embodiments of this application, the orthographic projection of the second energy-absorbing structure 22 is completely within the orthographic projection of the first side beam 112.

[0211] In this configuration, along the length of the battery 300, the orthographic projection of the second energy-absorbing structure 22 lies entirely within the orthographic projection of the first side beam 112 connected to it. Similarly, the orthographic projection of the second energy-absorbing structure 22 connected to the front first side beam 112 along the length of the battery 300 lies entirely within the orthographic projection of the front first side beam 112, and the orthographic projection of the second energy-absorbing structure 22 connected to the rear first side beam 112 along the length of the battery 300 lies entirely within the orthographic projection of the rear first side beam 112. Since the orthographic projection of the second energy-absorbing structure 22 lies entirely within the orthographic projection of the corresponding first side beam 112 along the length of the battery 300, the second energy-absorbing structure 22 and the corresponding first side beam 112 are positioned directly opposite each other along the length of the battery 300.

[0212] In the above technical solution, by ensuring that the orthographic projection of the second energy-absorbing structure 22 is completely within the orthographic projection of the corresponding first side beam 112 along the length of the battery 300, the second energy-absorbing structure 22 is more conducive to improving the force transmission performance between the second energy-absorbing structure 22 and the corresponding first side beam 112 when subjected to impact force. The first side beam 112 can more reliably support the second energy-absorbing structure 22, which is more conducive to improving the supporting role of the first side beam 112 and the second energy-absorbing structure 22, and further improving the stability of the second energy-absorbing structure 22 when subjected to external impact.

[0213] According to some embodiments of this application, as shown in Figures 11-13, the energy-absorbing structure 20 may include only one second energy-absorbing structure 22.

[0214] According to some embodiments of this application, the shape of the cross section of the second energy-absorbing structure 22 perpendicular to the height direction of the battery 300 can be triangular, rectangular (as shown in Figure 11), trapezoidal (as shown in Figures 12 and 13), or other polygonal shapes.

[0215] According to some embodiments of this application, the first energy-absorbing structure 21 and the second energy-absorbing structure 22 may be the same or different, and this application does not limit this.

[0216] According to some embodiments of this application, as shown in FIG14, the energy-absorbing structure 20 includes a plurality of second energy-absorbing structures 22 arranged along the length direction of the battery 300, and adjacent second energy-absorbing structures 22 along the length direction of the battery 300 are connected.

[0217] Among them, multiple second energy-absorbing structures 22 are arranged along the length direction of the battery 300. Along the length direction of the battery 300, adjacent second energy-absorbing structures 22 are connected. Adjacent second energy-absorbing structures 22 can be directly connected, or they can be connected by welding or bolting. However, this application is not limited to this. Adjacent second energy-absorbing structures 22 can also be indirectly connected by beams. The second energy-absorbing structure 22 and the beam are connected by welding or bolting.

[0218] In the above technical solution, multiple second energy-absorbing structures 22 are arranged along the length direction of the battery 300 and connected to each other along the length direction of the battery 300. When the energy-absorbing structure 20 is impacted, the multiple second energy-absorbing structures 22 can absorb the impact force, achieve a multi-level energy absorption effect, further improve the energy absorption performance of the energy-absorbing structure 20, reduce the impact force transmitted to the energy chamber 11, further reduce the force on the battery cell 12, further reduce the risk of deformation and compression of the battery cell 12 by the energy chamber 11, further reduce the risk of deformation and damage of the battery cell 12, further improve the reliability of the battery 300, and thus further improve the reliability of the vehicle 200.

[0219] According to some embodiments of this application, as shown in FIG14, the energy-absorbing structure 20 further includes a second connecting beam 221, and adjacent second energy-absorbing structures 22 along the length direction of the battery 300 are connected by the second connecting beam 221.

[0220] The energy-absorbing structure 20 may also include a second connecting beam 221. Along the length of the battery 300, adjacent second energy-absorbing structures 22 are connected by the second connecting beam 221. The second connecting beam 221 connects the adjacent second energy-absorbing structures 22, and the second energy-absorbing structures 22 and the second connecting beam 221 are connected by welding or bolting.

[0221] In the above technical solution, by setting a second connecting beam 221 to connect the adjacent second energy-absorbing structures 22 along the length direction of the battery 300, the connection strength of the adjacent second energy-absorbing structures 22 can be improved, the structural strength of the energy-absorbing structure 20 can be further improved, the stability of the energy-absorbing structure 20 when subjected to external force collision can be further improved, the energy absorption performance of the energy-absorbing structure 20 can be further improved, and when the energy-absorbing structure 20 is impacted, the impact force transmitted to the energy chamber 11 can be further reduced.

[0222] According to some embodiments of this application, as shown in FIG14, along the direction away from the energy chamber 11, the dimensions of each second energy-absorbing structure 22 decrease sequentially along the width direction of the battery 300.

[0223] In this configuration, the second energy-absorbing structures 22 are parallel to the driving direction of the vehicle 200 in the direction away from the energy storage 11. When multiple second energy-absorbing structures 22 are disposed on the front side of the energy storage 11, as the vehicle 200 moves forward in the direction away from the energy storage 11, the dimensions of each second energy-absorbing structure 22 along the width direction of the battery 300 decrease sequentially along the driving direction of the vehicle 200, i.e., from the rear to the front of the vehicle 200. When multiple second energy-absorbing structures 22 are disposed on the rear side of the energy storage 11, as the vehicle 200 moves backward, the dimensions of each second energy-absorbing structure 22 along the width direction of the battery 300 decrease sequentially along the driving direction of the vehicle 200, i.e., from the front to the rear of the vehicle 200.

[0224] In the above technical solution, by setting the dimensions of each second energy-absorbing structure 22 along the width direction of the battery 300 to decrease sequentially along the direction away from the energy chamber 11, the second energy-absorbing structure 22 with the largest dimension along the width direction of the battery 300 can be connected to the energy chamber 11. This is beneficial to increasing the connection area between the second energy-absorbing structure 22 and the energy chamber 11. When the second energy-absorbing structure 22 is subjected to an impact force, it is more beneficial to improve the force transmission performance between the second energy-absorbing structure 22 and the energy chamber 11. The energy chamber 11 can more reliably support the second energy-absorbing structure 22, which is more beneficial to improving the supporting effect of the energy chamber 11 on the second energy-absorbing structure 22, and further improving the stability of the second energy-absorbing structure 22 when subjected to an external impact.

[0225] According to some embodiments of this application, as shown in Figures 4, 6, 7, 8 and 9, the energy-absorbing structure 20 includes a plurality of second energy-absorbing structures 22 arranged along the width direction of the battery 300.

[0226] As shown in Figures 4, 6, 7, 8, and 9, the energy-absorbing structure 20 includes multiple second energy-absorbing structures 22, which can be arranged sequentially along the width direction of the battery 300. As shown in Figure 15, some of the multiple second energy-absorbing structures 22 can be arranged sequentially along the width direction of the battery 300, while other parts can be arranged along the length direction of the battery 300. As shown in Figure 16, multiple second energy-absorbing structures 22 can form multiple energy-absorbing groups, each group including multiple second energy-absorbing structures 22. The multiple second energy-absorbing structures 22 in each group are arranged along the width direction of the battery 300, and the multiple energy-absorbing groups are arranged sequentially along the length direction of the battery 300. Adjacent energy-absorbing groups can be connected by a second connecting beam 221. As shown in Figures 17-21, as an example, the energy-absorbing structure 20 includes multiple second energy-absorbing structures 22, which are arranged sequentially along the width direction of the battery 300.

[0227] In the above technical solution, by including multiple second energy-absorbing structures 22 arranged along the width direction of the battery 300, the energy absorption performance of the energy-absorbing structure 20 can be improved. Furthermore, the multiple second energy-absorbing structures 22 arranged along the width direction of the battery 300 can be connected to the first side beam 112, which helps to increase the connection area between the energy-absorbing structure 20 and the energy chamber 11. When the energy-absorbing structure 20 is subjected to an impact force, it is more conducive to improving the force transmission performance between the energy-absorbing structure 20 and the energy chamber 11. The energy chamber 11 can more reliably support the energy-absorbing structure 20, which is more conducive to improving the supporting role of the energy chamber 11 on the energy-absorbing structure 20, and further improving the stability of the energy-absorbing structure 20 when subjected to an external impact.

[0228] According to some embodiments of this application, a plurality of second energy-absorbing structures 22 are arranged at intervals along the width direction of the battery 300; or, at least two second energy-absorbing structures 22 are arranged crosswise; or at least two adjacent second energy-absorbing structures 22 along the width direction of the battery 300 are connected.

[0229] As an example, as shown in Figure 4, multiple second energy-absorbing structures 22 are arranged at intervals along the width direction of the battery 300. When multiple second energy-absorbing structures 22 are arranged along the width direction of the battery 300, adjacent second energy-absorbing structures 22 arranged along the width direction of the battery 300 are spaced apart.

[0230] By arranging multiple second energy-absorbing structures 22 at intervals along the width direction of the battery 300, the risk of interference between adjacent second energy-absorbing structures 22 arranged along the width direction of the battery 300 can be reduced. When the multiple second energy-absorbing structures 22 arranged at intervals along the width direction of the battery 300 are connected to the energy chamber 11, the multiple second energy-absorbing structures 22 transmit the force to different positions of the first side beam 112 of the energy chamber 11, so that the force is distributed and transmitted to the energy chamber 11, reducing the risk of stress concentration in the energy chamber 11, further reducing the risk of deformation and squeezing of the battery cell 12 by the energy chamber 11. In addition, the energy chamber 11 can more reliably support the energy-absorbing structure 20, which is more conducive to improving the supporting effect of the energy chamber 11 on the energy-absorbing structure 20, and further improving the stability of the energy-absorbing structure 20 when subjected to external force collision.

[0231] As another example, as shown in Figure 10, at least two second energy-absorbing structures 22 are arranged in a cross configuration. Specifically, at least two of the multiple second energy-absorbing structures 22 are arranged in a cross configuration. This cross configuration of at least two second energy-absorbing structures 22 enhances the structural strength of the energy-absorbing structure 20, ensuring a reliable connection between the energy-conducting beam 40 and the energy chamber 11. It also improves the supporting effect of the energy chamber 11 on the energy-absorbing structure 20, further enhancing the stability of the energy-absorbing structure 20 under external impact.

[0232] As another example, at least two adjacent second energy-absorbing structures 22 along the width direction of the battery 300 are connected. When multiple second energy-absorbing structures 22 are arranged along the width direction of the battery 300, at least two adjacent second energy-absorbing structures 22 are connected. Adjacent second energy-absorbing structures 22 can be directly connected, or they can be indirectly connected via an adapter. Connecting at least two adjacent second energy-absorbing structures 22 along the width direction of the battery 300 enhances the structural strength of the energy-absorbing structure 20, allowing it to be reliably connected between the conductive beam 40 and the energy chamber 11. This further improves the supporting effect of the energy chamber 11 on the energy-absorbing structure 20, thereby enhancing the stability of the energy-absorbing structure 20 under external impact.

[0233] According to some embodiments of this application, as shown in FIG11, a second energy-absorbing structure 22 is connected between the conduction beam 40 and the front first side beam 112. The second energy-absorbing structure 22 is a rectangular structure.

[0234] According to some embodiments of this application, as shown in Figures 12 and 13, a second energy-absorbing structure 22 is connected between the conductive crossbeam 40 and the front first side beam 112. The second energy-absorbing structure 22 is a trapezoidal structure.

[0235] According to some embodiments of this application, the first energy-absorbing structure 21 includes at least one of an energy-absorbing box 211, a buffer frame 212, a spring, and an airbag; and / or the second energy-absorbing structure 22 includes at least one of an energy-absorbing box 211, a buffer frame 212, a spring, and an airbag.

[0236] As an example, the first energy-absorbing structure 21 includes at least one of an energy-absorbing box 211, a buffer frame 212, a spring, and an airbag. That is, the first energy-absorbing structure 21 may include any one of the energy-absorbing box 211, the buffer frame 212, the spring, and the airbag; the first energy-absorbing structure 21 may also include any two of the energy-absorbing box 211, the buffer frame 212, the spring, and the airbag; the first energy-absorbing structure 21 may also include any three of the energy-absorbing box 211, the buffer frame 212, the spring, and the airbag; and the first energy-absorbing structure 21 may also include the energy-absorbing box 211, the buffer frame 212, the spring, and the airbag.

[0237] Alternatively, as another example, the second energy-absorbing structure 22 may include at least one of the following: energy-absorbing box 211, buffer frame 212, spring, and airbag. That is, the second energy-absorbing structure 22 may include any one of the following: energy-absorbing box 211, buffer frame 212, spring, and airbag; the second energy-absorbing structure 22 may also include any two of the following: energy-absorbing box 211, buffer frame 212, spring, and airbag; the second energy-absorbing structure 22 may also include any three of the following: energy-absorbing box 211, buffer frame 212, spring, and airbag; or the second energy-absorbing structure 22 may also include energy-absorbing box 211, buffer frame 212, spring, and airbag.

[0238] Alternatively, as another example, the first energy-absorbing structure 21 includes at least one of an energy-absorbing box 211, a buffer frame 212, a spring, and an airbag, and the second energy-absorbing structure 22 includes at least one of an energy-absorbing box 211, a buffer frame 212, a spring, and an airbag.

[0239] Both the first energy-absorbing structure 21 and the second energy-absorbing structure 22 can be disposed on the outside of the housing 10. Alternatively, both the first energy-absorbing structure 21 and the second energy-absorbing structure 22 can be disposed inside the housing 10. Alternatively, the first energy-absorbing structure 21 can be disposed on the outside of the housing 10, and the second energy-absorbing structure 22 can be disposed inside the housing 10.

[0240] In the above technical solution, by including at least one of the first energy-absorbing structure 21 and the second energy-absorbing structure 22, including at least one of the energy-absorbing box 211, the buffer frame 212, the spring and the airbag, at least one of the first energy-absorbing structure 21 and the second energy-absorbing structure 22 can have energy-absorbing performance, thereby enabling the energy-absorbing structure 20 to meet the working requirements and improve the energy-absorbing effect of the energy-absorbing structure 20.

[0241] According to some embodiments of this application, the energy-absorbing box 211 has a hollow cavity 2111 extending through the energy-absorbing box 211 along the length direction of the battery 300.

[0242] The energy-absorbing box 211 has a hollow cavity 2111 that extends along the length of the battery 300. There can be multiple hollow cavities 2111, which can be parallel to each other. The cross-sectional shape of the hollow cavity 2111 can be square, rectangular, circular, rhomboid, polygonal, or similar shapes. The energy-absorbing box 211 can be made of high-ductility aluminum alloy.

[0243] As shown in Figure 22, the cross-sectional shape of the hollow cavity 2111 is square. As shown in Figure 23, the cross-sectional shape of the hollow cavity 2111 is rectangular. As shown in Figure 24, the cross-sectional shape of the hollow cavity 2111 is circular. As shown in Figure 25, the cross-sectional shape of the hollow cavity 2111 is regular hexagonal. As shown in Figure 26, at least a portion of the hollow cavity 2111 has a rhomboid cross-sectional shape.

[0244] In the above technical solution, by having a hollow cavity 2111 that runs through the length of the battery 300, the energy-absorbing box 211 can have energy-absorbing performance, which is beneficial to improving the energy-absorbing capacity of the energy-absorbing box 211. In addition, it can simplify the structure of the energy-absorbing box 211 and facilitate its production and manufacturing.

[0245] According to some embodiments of this application, the buffer frame 212 encloses to form a buffer cavity 2121.

[0246] The buffer cavity 2121 is formed by being enclosed by the buffer frame 212; in other words, the buffer frame 212 defines the buffer cavity 2121. As an example, the buffer cavity 2121 may be located inside the buffer frame 212. As another example, the buffer cavity 2121 has at least one open end.

[0247] The buffer frame 212 can be a separately set frame structure. The buffer frame 212 can also have at least part of its structure formed by the housing 10. For example, as shown in Figures 4 and 5, the buffer frame 212 is composed of a first side beam 112, two second side beams 113 and a conductive crossbeam 40. The conductive crossbeam 40 can be the outer frame of the housing 10. The first side beam 112 and the conductive crossbeam 40 are arranged opposite each other and spaced apart along the length direction of the battery 300. The first side beam 112 and the conductive crossbeam 40 are both connected between the two second side beams 113, so that the first side beam 112, part of the second side beam 113 and the conductive crossbeam 40 enclose and form a buffer cavity 2121.

[0248] In the above technical solution, the buffer frame 212 encloses and forms a buffer cavity 2121, which enables the buffer frame 212 to have energy absorption performance, which is beneficial to improve the energy absorption capacity of the buffer frame 212. In addition, it can simplify the structure of the buffer frame 212 and facilitate the production and manufacturing of the buffer frame 212.

[0249] According to some embodiments of this application, as shown in FIG5, part of the structure of the buffer frame 212 is constructed as an arc-shaped structure. For example, the conduction beam 40 forms an arc-shaped structure, or the outer frame of the box 10 forms an arc-shaped structure. This application uses the example of the conduction beam 40 forming an arc-shaped structure for illustration. By forming an arc-shaped structure with the conduction beam 40, it is beneficial to increase the space of the buffer cavity 2121, improve the energy absorption performance of the buffer frame 212, and thus improve the energy absorption effect of the energy absorption structure 20.

[0250] According to some embodiments of this application, as shown in FIG4, the buffer cavity 2121 is provided with at least one of an energy-absorbing box 211, a spring, and an airbag.

[0251] The buffer cavity 2121 may contain any one of the following: an energy-absorbing box 211, a spring, and an airbag. Alternatively, it may contain any two of these components. The energy-absorbing box 211, spring, and airbag within the buffer cavity 2121 may also be connected to the buffer frame 212. Furthermore, the energy-absorbing box 211, spring, and airbag within the buffer cavity 2121 may be constructed as at least a partial second energy-absorbing structure 22. This application uses an energy-absorbing box 211 within the buffer cavity 2121 as an example. The energy-absorbing box 211 is assembled within the buffer cavity 2121, and both ends of the energy-absorbing box 211 along the length of the battery 300 are connected to the buffer frame 212. As an example, both ends of the energy-absorbing box 211 along the length of the battery 300 are connected to the conductive crossbeam 40 and the first side beam 112, respectively. The energy-absorbing box 211 can be welded to the transmission beam 40 and the first side beam 112, or the energy-absorbing box 211 can be connected to the transmission beam 40 and the first side beam 112 by bolts.

[0252] In the above technical solution, by providing at least one of the following in the buffer cavity 2121: energy-absorbing box 211, spring, and airbag, the energy absorption performance of the energy-absorbing structure 20 can be improved. After being impacted, the energy-absorbing structure 20 can absorb more impact force, which can further reduce the force on the battery cell 12, further reduce the risk of deformation and compression of the battery cell 12 by the energy chamber 11, further reduce the risk of deformation and damage of the battery cell 12, further improve the reliability of the battery 300, and thus further improve the reliability of the vehicle 200.

[0253] According to some embodiments of this application, as shown in FIG2, an electrical compartment 15 is also formed inside the housing 10. The electrical compartment 15 is used to accommodate electrical devices that are electrically connected to the battery cell 12. Along the driving direction of the vehicle 200, the energy compartment 11 is located in front of the electrical compartment 15.

[0254] As shown in Figure 2, an electrical compartment 15 is also formed inside the housing 10. That is, the housing 10 also defines the electrical compartment 15. Along the driving direction of the vehicle 200, that is, along the length direction of the vehicle 200, the energy compartment 11 is located in front of the electrical compartment 15. As an example, the housing 10 may include a third connecting beam 16, which is located behind the rear first side beam 112. The third connecting beam 16 is spaced apart from the rear first side beam 112 and extends along the width direction of the battery 300. The two ends of the third connecting beam 16 are respectively connected to two second side beams 113. The third connecting beam 16, the rear first side beam 112, and the two second side beams 113 together define the electrical compartment 15, which houses electrical devices that are electrically connected to the battery cells 12 in the energy compartment 11.

[0255] In the above technical solution, the energy compartment 11 is located in front of the electrical compartment 15, and the electrical components that are electrically connected to the battery cells 12 in the energy compartment 11 are installed in the electrical compartment 15. When a collision occurs in front of the vehicle 200, the collision force is transmitted from the front of the battery 300 to the rear. Since the collision force gradually decreases as it is transmitted to the rear, the force on the electrical components can be reduced, the risk of short circuit caused by the compression of the electrical components can be reduced, and the reliability of the battery 300 can be further improved.

[0256] According to some embodiments of this application, as shown in Figures 2 and 4, a connecting longitudinal beam 60 is provided inside the energy chamber 11, and the connecting longitudinal beam 60 extends along the length direction of the battery 300.

[0257] The energy chamber 11 is equipped with a connecting longitudinal beam 60, which extends along the length of the battery 300. The connecting longitudinal beam 60 can be fixedly connected to the energy chamber 11, welded to the energy chamber 11, or fixedly connected to the energy chamber 11 by bolts. Multiple connecting longitudinal beams 60 can be arranged at intervals along the width direction of the battery 300, meaning that adjacent connecting longitudinal beams 60 are spaced apart along the width direction of the battery 300, and the multiple connecting longitudinal beams 60 can be parallel to each other.

[0258] In the above technical solution, by setting a connecting longitudinal beam 60 in the energy compartment 11, after the battery cell 12 is installed in the energy compartment 11, the connecting longitudinal beam 60 can support the battery cell 12, so that the battery cell 12 can be more firmly installed in the energy compartment 11. Furthermore, when the connecting longitudinal beam 60 is fixedly connected to the energy compartment 11, after the collision force is transmitted to the energy absorption structure 20, a part of the collision force can be transmitted to the connecting longitudinal beam 60. The collision force is transmitted backward along the connecting longitudinal beam 60, which can further reduce the force on the battery cell 12, further reduce the risk of deformation and compression of the battery cell 12 in the energy compartment 11, further reduce the risk of deformation and damage of the battery cell 12, further improve the reliability of the battery 300, and thus further improve the reliability of the vehicle 200.

[0259] According to some embodiments of this application, as shown in Figures 2 and 4, the energy chamber 11 includes a plurality of side beams 111, which are connected and enclosed to form the energy chamber 11; the plurality of side beams 111 include two first side beams 112 and two second side beams 113, the two first side beams 112 are arranged opposite to each other and spaced apart along the length direction of the battery 300, and the two second side beams 113 are arranged opposite to each other and spaced apart along the width direction of the battery 300; a connecting longitudinal beam 60 is connected between the two first side beams 112.

[0260] The energy chamber 11 includes multiple side beams 111, which are connected and enclose each other to form the energy chamber 11. Each side beam 111 includes two first side beams 112 and two second side beams 113. The two first side beams 112 extend along the width direction of the battery 300, and the two second side beams 113 extend along the length direction of the battery 300. The two first side beams 112 are arranged opposite to each other and spaced apart along the length direction of the battery 300. The spacing between the two first side beams 112 can be reasonably designed according to the dimensions of the energy chamber 11, and their orthographic projections along the length direction of the battery 300 can overlap. Similarly, the two second side beams 113 are arranged opposite to each other and spaced apart along the width direction of the battery 300. The spacing between the two second side beams 113 can be reasonably designed according to the dimensions of the energy chamber 11, and their orthographic projections along the width direction of the battery 300 can overlap. The connecting longitudinal beam 60 extends along the length of the battery 300. Both ends of the connecting longitudinal beam 60 can be fixedly connected to the side beam 111 of the energy chamber 11. The connecting longitudinal beam 60 can be welded to the energy chamber 11, or it can be fixedly connected to the energy chamber 11 by bolts. The connecting longitudinal beam 60 is connected between the two first side beams 112.

[0261] Along the width direction of the battery 300, the orthographic projections of the first side beam 112 and the second side beam 113 may have overlapping areas, may partially overlap, or may completely overlap. Similarly, the orthographic projections of the connecting longitudinal beam 60 and the second side beam 113 may have overlapping areas, may partially overlap, or may completely overlap.

[0262] In the above technical solution, the connecting longitudinal beam 60 is connected between the two first side beams 112. After the collision force is transmitted to the front first side beam 112 of the energy compartment 11, part of the collision force can be transmitted to the connecting longitudinal beam 60 through the front first side beam 112 and then transmitted to the rear of the energy compartment 11 along the connecting longitudinal beam 60. Part of the collision force is transmitted to the two second side beams 113 along the front first side beam 112. The collision force on the second side beams 113 is transmitted to the rear of the battery 300 along the second side beams 113, so that the collision force is dispersed. This can further reduce the force on the battery cell 12, further reduce the risk of deformation and compression of the battery cell 12 by the energy compartment 11, further reduce the risk of deformation and damage of the battery cell 12, further improve the reliability of the battery 300, and thus further improve the reliability of the vehicle 200.

[0263] The vehicle 200 according to the embodiments of this application includes a chassis 100 and a battery 300 as described above. The battery 300 is mounted on the chassis 100, and the energy-absorbing structure 20 is fixedly connected to the chassis 100, with at least a portion of the energy-absorbing structure 20 located in the middle region of the chassis 100.

[0264] When the battery 300 is installed on the chassis 100, at least a portion of the energy-absorbing structure 20 is located in the central region of the chassis 100. The chassis 100 has a center line extending along its length. The central region of the chassis 100 refers to the area covered by a certain distance on both sides of the center line along the width direction of the chassis 100. As an example, the central region of the chassis 100 refers to the area covered by a length of 50cm on both sides of the center line along the width direction of the chassis 100. The energy-absorbing structure 20 can be directly fixedly connected to the chassis 100, or the energy-absorbing structure 20 can be fixedly connected to the chassis 100 through a mounting bracket 80. For example, the energy-absorbing structure 20 can be connected to the front floor 101 of the chassis 100 through the mounting bracket 80.

[0265] When the vehicle 200 is impacted from the front, for example, when the vehicle 200 is traveling forward at high speed (e.g., speed above 100 kph), the energy-absorbing structure 20 can absorb at least part of the impact force after being impacted. The impact force not absorbed by the energy-absorbing structure 20 can be transferred to the energy chamber 11, the housing 10, and the chassis 100. The impact force can be transferred along the chassis 100 to other structural components of the vehicle 200, thus dispersing the impact force and reducing the risk of concentrated force. Compared with the prior art, this can reduce the force on the battery cell 12, reduce the risk of deformation and compression of the battery cell 12 by the energy chamber 11, reduce the risk of deformation and damage of the battery cell 12, improve the reliability of the battery 300, and thus improve the reliability of the vehicle 200. This helps to solve the reliability problem of the battery 300 when the vehicle 200 is traveling at high speed, and can reduce the risk of deformation and damage of the battery cell 12 when the vehicle 200 is involved in a collision at high speed. By placing at least a portion of the energy-absorbing structure 20 in the middle region of the chassis 100, when the vehicle 200 is involved in a frontal, rear, or offset collision, the energy-absorbing structure 20 is able to absorb the impact force to a greater extent after being hit.

[0266] According to some embodiments of this application, referring to Figures 2 and 4, this application provides a battery 300, which includes a housing 10 and an energy-absorbing structure 20. An energy chamber 11 is formed inside the housing 10, and the energy chamber 11 accommodates a plurality of battery cells 12. The energy-absorbing structure 20 is connected to the energy chamber 11. Along the length direction of the battery 300, the energy-absorbing structure 20 is disposed in front of the energy chamber 11. Along the width direction of the battery 300, at least a portion of the energy-absorbing structure 20 is located in the middle region of the battery 300. The energy-absorbing structure 20 includes a first energy-absorbing structure 21 and a second energy-absorbing structure 22. The second energy-absorbing structure 22 is located between the first energy-absorbing structure 21 and the energy chamber 11, and the second energy-absorbing structure 22 is fixedly connected to the first energy-absorbing structure 21 and the front first side beam 112 of the energy chamber 11. The second energy-absorbing structure 22 is connected to the first energy-absorbing structure 21 through a conductive beam 40. The conductive beam 40 extends along the width direction of the battery 300, and its two ends are respectively connected to two second side beams 113. The energy chamber 11 is equipped with a connecting longitudinal beam 60, the two ends of which are connected to two first side beams 112 respectively. Along the length of the battery 300, the orthographic projection of the connecting longitudinal beam 60 and the orthographic projection of the energy-absorbing structure 20 have an overlapping area. An electrical compartment 15 is also formed inside the housing 10. The electrical compartment 15 is used to house electrical devices that are electrically connected to the battery cell 12. Along the length of the battery 300, the energy chamber 11 is located in front of the electrical compartment 15.

[0267] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other.

[0268] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0269] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery for use in a vehicle, wherein, include: The housing contains an energy chamber that holds multiple individual battery cells. An energy-absorbing structure is connected to the energy chamber. Along the length direction of the battery, the energy-absorbing structure is disposed on at least one side in front of or behind the plurality of battery cells. The length direction of the battery is parallel to the driving direction of the vehicle. Along the width direction of the battery, at least a portion of the energy-absorbing structure is located in the middle region of the battery.

2. The battery according to claim 1, wherein, The energy-absorbing structure includes a first energy-absorbing structure connected to the energy chamber; at least a portion of the first energy-absorbing structure is located in the middle region of the battery along its width direction.

3. The battery according to claim 2, wherein, The energy chamber includes multiple side beams, which are connected to form the energy chamber, and the first energy-absorbing structure is fixedly connected to at least one of the side beams.

4. The battery according to claim 3, wherein, At least a portion of the battery cell abuts against at least one of the side beams.

5. The battery according to claim 3 or 4, wherein, The plurality of side beams includes two first side beams and two second side beams. The two first side beams are arranged opposite to each other and spaced apart along the length direction of the battery, and the two second side beams are arranged opposite to each other and spaced apart along the width direction of the battery. The first energy-absorbing structure is connected to at least one of the two first side beams.

6. The battery according to claim 5, wherein, Along the length of the battery, the orthographic projection of the first energy-absorbing structure and the orthographic projection of the first side beam have an overlapping area.

7. The battery according to claim 6, wherein, Along the length of the battery, the area of ​​the orthographic projection of the first energy-absorbing structure is S1, and the area of ​​the overlapping region between the orthographic projection of the first energy-absorbing structure and the orthographic projection of the first side beam is S2, satisfying: 10% ≤ S2 / S1 ≤ 100%.

8. The battery according to claim 6 or 7, wherein, The orthographic projection of the first energy-absorbing structure lies entirely within the orthographic projection of the first side beam.

9. The battery according to any one of claims 2-8, wherein, The energy-absorbing structure includes a plurality of first energy-absorbing structures arranged along the length direction of the battery, and adjacent first energy-absorbing structures along the length direction of the battery are connected.

10. The battery according to claim 9, wherein, The energy-absorbing structure also includes a first connecting beam, and adjacent first energy-absorbing structures along the length direction of the battery are connected by the first connecting beam.

11. The battery according to claim 9 or 10, wherein, Along the direction away from the energy chamber, the dimensions of each of the first energy-absorbing structures decrease sequentially along the width direction of the battery.

12. The battery according to any one of claims 2-11, wherein, The energy-absorbing structure includes a plurality of first energy-absorbing structures arranged along the width direction of the battery.

13. The battery according to claim 12, wherein, Multiple first energy-absorbing structures are arranged at intervals along the width direction of the battery; or, At least two of the first energy-absorbing structures are arranged in a cross pattern; or At least two of the first energy-absorbing structures that are adjacent along the width direction of the battery are connected.

14. The battery according to any one of claims 2-13, wherein, The energy-absorbing structure further includes a second energy-absorbing structure, which is located between the first energy-absorbing structure and the energy chamber along the length of the battery.

15. The battery according to claim 14, wherein, The second energy-absorbing structure is connected to the first energy-absorbing structure, and the second energy-absorbing structure is connected to the energy chamber.

16. The battery according to claim 15, wherein, The energy chamber includes multiple side beams, which are connected to form the energy chamber, and the second energy-absorbing structure is fixedly connected to the side beams.

17. The battery according to claim 15, wherein, It also includes a conductive beam located between the first energy-absorbing structure and the second energy-absorbing structure, and the conductive beam connects the first energy-absorbing structure and the second energy-absorbing structure.

18. The battery according to claim 17, wherein, The conductive beam extends along the width direction of the battery; The conductive beam is connected to the housing, or the conductive beam forms part of the housing.

19. The battery according to any one of claims 14-18, wherein, Along the length of the battery, the orthographic projection of the first energy-absorbing structure and the orthographic projection of the second energy-absorbing structure have an overlapping area.

20. The battery according to claim 19, wherein, The area of ​​the orthographic projection of the first energy-absorbing structure is S1, and the area of ​​the overlapping region between the orthographic projection of the first energy-absorbing structure and the orthographic projection of the second energy-absorbing structure is S3, satisfying: 20% ≤ S3 / S1 ≤ 100%.

21. The battery according to claim 19 or 20, wherein, The orthographic projection of the first energy-absorbing structure lies entirely within the orthographic projection of the second energy-absorbing structure.

22. The battery according to any one of claims 14-21, wherein, The energy-absorbing structure includes a plurality of second energy-absorbing structures arranged along the length direction of the battery, and adjacent second energy-absorbing structures along the length direction of the battery are connected.

23. The battery according to claim 22, wherein, The energy-absorbing structure also includes a second connecting beam, and adjacent second energy-absorbing structures along the length direction of the battery are connected by the second connecting beam.

24. The battery according to claim 22 or 23, wherein, Along the direction away from the energy chamber, the dimensions of each of the second energy-absorbing structures decrease sequentially along the width direction of the battery.

25. The battery according to any one of claims 14-24, wherein, The energy-absorbing structure includes a plurality of second energy-absorbing structures arranged along the width direction of the battery.

26. The battery according to claim 25, wherein, Multiple second energy-absorbing structures are arranged at intervals along the width direction of the battery; or, At least two of the second energy-absorbing structures are arranged in a cross pattern; or At least two second energy-absorbing structures that are adjacent along the width direction of the battery are connected.

27. The battery according to any one of claims 14-26, wherein, The first energy-absorbing structure includes at least one of an energy-absorbing box, a buffer frame, a spring, and an airbag; and / or The second energy-absorbing structure includes at least one of an energy-absorbing box, a buffer frame, a spring, and an airbag.

28. The battery according to claim 27, wherein, The energy-absorbing box has a hollow cavity that extends through the energy-absorbing box along the length of the battery.

29. The battery according to claim 27 or 28, wherein, The buffer frame encloses and forms a buffer cavity.

30. The battery according to claim 29, wherein, The buffer cavity is provided with at least one of an energy-absorbing box, a spring, and an airbag.

31. The battery according to any one of claims 1-30, wherein, An electrical compartment is also formed inside the housing, which is used to house electrical devices that are electrically connected to the battery cell. Along the driving direction of the vehicle, the energy compartment is located in front of the electrical compartment.

32. The battery according to any one of claims 1-31, wherein, The energy chamber is equipped with a connecting longitudinal beam that extends along the length of the battery.

33. The battery according to claim 32, wherein, The energy chamber includes multiple side beams, which are connected and enclose each other to form the energy chamber. The multiple side beams include two first side beams and two second side beams. The two first side beams are arranged opposite each other and spaced apart along the length of the battery, and the two second side beams are arranged opposite each other and spaced apart along the width of the battery. The connecting longitudinal beam connects the two first side beams.

34. A vehicle, wherein, The device includes a chassis and a battery according to any one of claims 1-33, the battery being mounted on the chassis, the energy-absorbing structure being fixedly connected to the chassis, and at least a portion of the energy-absorbing structure being located in the middle region of the chassis.

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