Battery pack frame, battery pack and vehicle

Abstract

The application discloses a kind of frame of battery pack, battery pack and vehicle, it is related to new energy technology field.Frame includes: edge beam, elastomer and drive adjustment structure.Edge beam is connected in sequence multiple roots, and multiple edge beams are enclosed to form cell cavity, and at least one edge beam is provided with accommodating groove on the side towards cell cavity;Elastomer is arranged in accommodating groove, one end of elastomer is connected with edge beam, and the other end is used to extrude cell to adjust the expansion force of cell;Drive adjustment structure is connected with elastomer to adjust the expansion amount of elastomer.According to the frame of battery pack of the embodiment of the application, the constraint force of cell can be dynamically adjusted, the use reliability of cell is ensured, and then the use performance of battery pack is optimized.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of new energy, in particular to a frame of a battery pack, a battery pack and a vehicle. BACKGROUND

[0002] In the assembly process of the battery pack, one step is to assemble the battery pack upside down, at this time the large surface of the battery cell is in an unconstrained state inside the battery pack. The commonly used solution is to provide the necessary constraint by pouring glue or using foam material. However, both methods have a problem during the entire service life of the battery pack: the constraint force around the battery cell is not adjustable and cannot be monitored in real time. In the initial stage, the constraint force may be too small to effectively limit the battery cell; and when the battery cell expands, the constraint force becomes too large, both of which can adversely affect the cycle life of the battery cell.

[0003] Therefore, the frame of the battery pack has room for improvement. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the first aspect of the present application aims to provide a frame of a battery pack, which can dynamically adjust the constraint force on the battery cell, ensure the use reliability of the battery cell, and thus optimize the use performance of the battery pack.

[0005] The second aspect of the present application aims to provide a battery pack.

[0006] The third aspect of the present application aims to provide a vehicle.

[0007] The frame of the battery pack according to the first aspect of the present application comprises a plurality of edge beams, an elastic body and a driving adjustment structure. The plurality of edge beams are connected in sequence, and the plurality of edge beams form a battery cell cavity. At least one of the edge beams is provided with a receiving groove on the side facing the battery cell cavity. The elastic body is arranged in the receiving groove, one end of the elastic body is connected to the edge beam, and the other end is used to extrude the battery cell to adjust the expansion force of the battery cell. The driving adjustment structure is connected to the elastic body to adjust the extension amount of the elastic body.

[0008] According to the frame of the first aspect of the embodiments of the present application, the side beam is arranged as the basic structure of the frame. The side beam is sequentially connected to form the battery cell cavity, thereby providing a stable installation environment for the battery cell. The accommodation groove is arranged on the side beam to provide space for the installation of the elastic body. The elastic body is arranged to dynamically constrain and adjust the battery cell in the battery pack, and the expansion force of the battery cell is absorbed by the elastic body itself to maintain the stability and safety of the battery cell. The driving adjustment structure is arranged to dynamically adjust the expansion amount of the elastic body according to the actual state of the battery cell. The driving adjustment structure can control the constraint force of the elastic body on the battery cell, thereby avoiding the problem that the initial constraint force is too small to effectively constrain the battery cell, and preventing the case that the constraint force is too large to cause damage to the battery cell after the battery cell expands. The dynamic adjustment capability not only improves the cycle life of the battery cell, but also enhances the overall performance and reliability of the battery pack.

[0009] According to the frame of the battery pack of some embodiments of the present application, the frame further comprises a push plate connected to one end of the elastic body facing the battery cell cavity, and the elastic body is pressed on the battery cell through the push plate.

[0010] In some optional embodiments, the frame of the battery pack further comprises a guide structure connected between the push plate and the side beam.

[0011] Optionally, the guide structure comprises a linear motion bearing.

[0012] In some optional embodiments, the linear motion bearing is at least two, and the at least two linear motion bearings are arranged in a spaced manner along the height direction of the frame, and the elastic body is located between the at least two linear motion bearings.

[0013] In some optional embodiments, the elastic body has a shortest position, at which the push plate is located in the accommodation groove, and the side beam and the push plate are flush on the side facing the battery cell cavity.

[0014] According to the frame of the battery pack of some embodiments of the present application, the frame further comprises a pressure sensor for detecting the pressure generated by the elastic body on the battery cell, and the pressure sensor is electrically connected with the driving adjustment structure.

[0015] In some optional embodiments, the elastic body comprises an air spring, and the pressure sensor is arranged in the air spring or at the gas interface of the air spring.

[0016] According to the frame of the battery pack of some embodiments of the present application, the elastic body comprises an air spring, and the driving adjustment structure comprises a gas channel formed in the side beam and a control valve, the gas channel communicates with the gas interface of the air spring, and the control valve is connected with the gas channel.

[0017] In some optional embodiments, the control valve comprises a constant pressure valve; or the driving adjustment structure further comprises a controller, and the control valve comprises at least one of an inflation valve and a pressure relief valve.

[0018] In some optional embodiments, among the plurality of side beams, part of the side beams are provided with the accommodating grooves and the air passages, and part of the side beams are provided with the control valves; the driving adjustment structure further comprises: an air pipe, one end of the air pipe being connected to the air passage, and the other end of the air pipe being connected to the control valve.

[0019] According to the frame of the battery pack in some embodiments of the present application, the side beam is a shaped body, and the accommodating groove is a shaped cavity integrally formed on the side beam.

[0020] According to the battery pack in some embodiments of the second aspect of the present application, the frame is the frame of the battery pack in some embodiments of the first aspect of the present application, and the battery cell is arranged in the battery cell accommodating cavity.

[0021] According to the vehicle in some embodiments of the third aspect of the present application, the battery pack is the battery pack in some embodiments of the second aspect of the present application.

[0022] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0023] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings, wherein:

[0024] Figure 1 It is an exploded view of the battery pack in some embodiments of the present application;

[0025] Figure 2 It is an exploded view of the frame in some embodiments of the present application;

[0026] Figure 3 It is a structural schematic view of the frame in some embodiments of the present application;

[0027] Figure 4 It is a position schematic view of the push plate in some embodiments of the present application (when the elastic body is in the shortest position);

[0028] Figure 5 It is a position schematic view of the air spring in the accommodating groove in some embodiments of the present application.

[0029] LIST OF REFERENCE NUMERALS:

[0030] battery pack 1000,

[0031] The frame 100, the edge beam 10, the battery cell cavity 101, the accommodating groove 102, the elastic body 20, the air spring 22, the air interface 221, the driving adjusting structure 30, the air duct 31, the control valve 32, the air pipe 33, the push plate 40, the guide structure 50, the linear motion bearing 51, the bearing seat 511, the sliding column 512, the pressure sensor 60, the air supply unit 70,

[0032] The battery cell 200. DETAILED DESCRIPTION

[0033] Embodiments of the present application are described below in detail with reference to the accompanying drawings, wherein the same or similar numerals represent the same or similar elements or elements having the same or similar functions throughout the drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0034] In the description of the present application, it should be understood that the terms "height", "upper", "lower", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation to be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the features defined as "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0035] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and arrangements of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numerals and / or letters in different examples. Such repetition is for the purpose of simplification and clarity, and in itself does not indicate the relationship between the various embodiments and / or arrangements discussed. In addition, the present application provides examples of various specific processes and materials, but those skilled in the art can realize the applicability of other processes and / or the use of other materials.

[0037] Reference will now be made to Figures 1-5 A frame 100 of a battery pack according to an embodiment of the first aspect of the present application is described.

[0038] In combination Figure 1 And Figure 2 The frame 100 of such a battery pack comprises a plurality of side beams 10, an elastic body 20, and a driving adjustment structure 30.

[0039] The side beams 10 are connected in sequence, and the plurality of side beams 10 enclose a cell cavity 101. At least one side beam 10 is provided with a receiving groove 102 on the side facing the cell cavity 101.

[0040] The cell cavity 101 enclosed by the side beams 10 is used to accommodate and protect the cell 200. By providing the side beams 10, not only the structural strength of the battery pack 1000 is improved, but also the cell 200 can be effectively prevented from being damaged when subjected to external force impact.

[0041] The elastic body 20 is arranged in the receiving groove 102, one end of the elastic body 20 is connected to the side beam 10, and the other end is used to press the cell 200 to adjust the swelling force of the cell 200. Here, the one end of the elastic body 20 is connected to the side beam 10, which can ensure the stable connection of the elastic body 20 and the side beam 10, and will not be accidentally displaced or fall off, providing stable support for the cell 200. In addition, the elastic body 20 also plays a role in buffering and shock absorption, protecting the cell 200 from damage caused by direct impact or vibration.

[0042] The connection between the elastic body 20 and the side beam 10 can be welding, screwing, bonding or other connection methods to ensure the firmness and durability of the connection.

[0043] Optionally, the elastic body 20 can be an air bag, a spring member or other structure with elastic deformation capability. These structures can deform under the action of external force and restore to the original state through their own elastic restoring force, thereby achieving the adjustment and support of the state of the cell 200.

[0044] The driving adjustment structure 30 is connected to the elastic body 20 to adjust the extension and contraction amount of the elastic body 20.

[0045] The driving adjustment structure 30 is used to control the extension and contraction amount of the elastic body 20, thereby achieving fine adjustment of the state of the cell 200.

[0046] It is worth noting that during the charging and discharging process of the battery, the cell 200 may expand in volume due to internal chemical reactions. During this process, the available space in the cell cavity 101 will decrease accordingly, causing the cell 200 to exert pressure on the surrounding elastic body 20.

[0047] At this time, the driving adjustment structure 30 releases part of the space in the cell cavity 101 by reducing the expansion and contraction amount of the elastic body 20, thereby reserving more space for the expansion of the battery cell 200, preventing the battery cell 200 from deforming or being damaged due to excessive pressure. At the same time, the stability and safety of the battery cell 200 inside the battery pack 1000 are also ensured.

[0048] When the battery completes its charging and discharging cycle and returns to the normal state, the chemical reaction inside the battery cell 200 tends to be balanced, and its volume will also correspondingly return to the initial size. During this transition process, the available space in the cell cavity 101 will increase accordingly, and a certain gap may appear between the battery cell 200 and the edge beam that was originally tightly fitted. The existence of this gap may cause the battery cell 200 to slightly shake in the cavity, thereby affecting the electrical connection stability between the battery cell 200 and other components in the battery pack 1000.

[0049] At this time, the driving adjustment structure 30 can adjust the gap between the battery cell 200 and the edge beam by increasing the expansion and contraction amount of the elastic body 20, ensuring that the battery cell 200 remains stably positioned in the cavity.

[0050] In this way, through the coordinated action of the driving adjustment structure 30 and the elastic body 20, the battery pack 1000 can better adapt to the volume changes of the battery cell 200 during the charging and discharging process, thereby prolonging the service life of the battery and improving the reliability and performance of the battery pack 1000.

[0051] Optionally, when the elastic body 20 is an air bag, the driving adjustment structure 30 can be a gas cylinder, which pushes the expansion and contraction of the air bag through changes in gas pressure.

[0052] In some optional embodiments, when the elastic body 20 is a spring component, the driving adjustment structure 30 can include a driving motor and a ball screw. Specifically, the driving motor serves as a power source and can output corresponding torque and speed. This torque and speed is converted into linear motion through the ball screw, thereby pushing the spring component to expand and contract. The use of the ball screw can reduce friction and wear, and also helps to improve the accuracy and efficiency of transmission, so that the expansion and contraction amount of the spring component can be very precisely controlled.

[0053] Alternatively, the driving adjustment structure 30 can include an electromagnetic driver, which directly acts on the elastic body 20 using electromagnetic force to achieve rapid and precise control of the expansion and contraction amount of the elastic body 20.

[0054] Optionally, the frame 100 is provided with a receiving groove 102 on the opposite two side beams 10, and the elastic body 20 is arranged at the receiving groove 102. In this way, the expansion and contraction of the battery cell 200 can be more quickly controlled and adjusted, thereby improving the stability of the battery cell 200 and the overall performance of the battery pack 1000. At the same time, the battery cell 200 can also obtain clamping force from the elastic body 20 on both sides, so that the stress is more balanced and stable.

[0055] As shown in Figures 2-5 , the frame 100 according to the embodiment of the present application further comprises a push plate 40 connected to one end of the elastic body 20 facing the battery cell cavity 101, and the elastic body 20 is pressed on the battery cell 200 through the push plate 40.

[0056] The push plate 40 serves to increase the contact area with the surface of the battery cell 200, so as to ensure that the force of the elastic body 20 can be uniformly and stably applied to the entire surface of the battery cell 200.

[0057] Optionally, the shape and size of the push plate 40 are configured to match the shape and size of the surface of the battery cell 200 in contact. In this way, when the elastic body 20 exerts pressure on the push plate 40, the push plate 40 can tightly and uniformly adhere to the surface of the battery cell 200, thereby avoiding the problem of excessive or insufficient pressure due to uneven local pressure. Such uniform pressure distribution helps to reduce the deformation of the battery cell 200 due to thermal expansion or mechanical stress during charging and discharging, thereby protecting the structural integrity of the battery cell 200 and prolonging its service life.

[0058] The connection between the push plate 40 and the elastic body 20 includes but is not limited to welding, gluing or other fastening means. The specific connection mode can be determined according to actual needs, and the present application does not make any limitation.

[0059] In some optional embodiments, in combination with Figure 2 and Figure 3 , the frame 100 of the battery pack further comprises a guide structure 50 connected between the push plate 40 and the side beam 10.

[0060] Here, the guide structure 50 provides a reliable moving track for the push plate 40. During the expansion and contraction of the elastic body 20, the guide structure 50 can ensure that the push plate 40 moves along the predetermined track, avoiding unstable support due to deviation or shaking. Such precise position control enables the push plate 40 to always tightly adhere to the surface of the battery cell 200, providing uniform and stable support force for the battery cell 200.

[0061] Optionally, the guide structure 50 comprises a sliding block and a sliding rail. Through the cooperation of the sliding block and the sliding rail, the elastic body 20 can move smoothly along the predetermined path during the expansion and contraction, and the accurate position can be maintained.

[0062] Specifically, the slider is arranged on one of the push plate 40 and the edge beam 10, and the slide rail is arranged on the other one.

[0063] For example, the slider is arranged on the push plate 40, and the slide rail is formed on the edge beam 10. When the push plate 40 is extended or retracted under the pushing of the elastic body 20, the slider will move smoothly along the slide rail. During this process, the close fit and accurate guidance between the slider and the slide rail ensure that the push plate 40 can always move along the predetermined path without deviation or shaking, thereby providing uniform support force for the battery cell 200 and enhancing the use reliability of the battery pack 1000.

[0064] In some alternative embodiments, referring to Figure 2 and Figure 3 , the guide structure 50 includes a linear motion bearing 51.

[0065] Firstly, as a part of the guide structure 50, the linear motion bearing 51 can ensure that the elastic body 20 moves stably and accurately in a linear direction. Moreover, through the rolling contact of the bearing, the vibration generated during the guidance can be reduced or even eliminated, thereby improving the smoothness of the movement of the push plate 40.

[0066] Secondly, the linear motion bearing 51 has good wear resistance and durability, and can maintain stable performance in long-time and high-frequency linear motion. This makes the linear motion bearing 51 have a longer service life and lower maintenance cost in the guide structure 50, thereby improving the use reliability of the battery pack 1000.

[0067] In some specific embodiments, as shown in Figure 5 , the linear motion bearing 51 includes a bearing seat 511 and a sliding column 512. The bearing seat 511 includes a guide hole, and the sliding column 512 is slidably arranged in the guide hole. One end of the sliding column 512 is connected with the push plate 40.

[0068] By arranging the linear motion bearing 51, the movement accuracy of the push plate 40 can be improved, because the linear motion bearing 51 can ensure that the push plate 40 smoothly and accurately slides along the predetermined trajectory (i.e., the direction perpendicular to the side surface of the battery cell 200) during the movement, reducing unnecessary deviation and shaking. At the same time, this design also greatly enhances the stability of the movement of the push plate 40, so that the push plate 40 can maintain constant speed and force when pushing or adjusting the position of the battery cell 200, avoiding the problems of damage to the battery cell 200 or uneven support force caused by unstable movement, thereby ensuring the reliability of the battery cell 200.

[0069] In some alternative embodiments, in combination with Figure 2The linear motion bearings 51 are at least two, and the at least two linear motion bearings 51 are arranged in a height direction of the frame 100, and the elastic body 20 is located between the at least two linear motion bearings 51.

[0070] In the above technical solution, the elastic body 20 is arranged between the two linear motion bearings 51, so that the two ends of the push plate 40 can maintain consistent moving speed and distance during the movement of the push plate 40 driven by the elastic body 20, avoiding the displacement or distortion of the push plate 40 due to uneven displacement, and thus being capable of exerting uniform support force on the side surface of the battery cell 200. Such uniform support force can effectively prevent the battery cell 200 from deforming, being damaged or having performance degradation due to uneven support force. Therefore, the technical solution not only helps to maintain the stability and reliability of the movement of the push plate 40, but also helps to ensure the safety and stability of the battery cell 200 in the battery pack 1000, thereby prolonging the service life of the battery cell 200.

[0071] In some optional embodiments, referring to Figure 3 and Figure 4 , the elastic body 20 has a shortest position, at which the push plate 40 is located in the accommodating groove 102, and the side beam 10 and the push plate 40 are flush on the side facing the battery cell accommodating cavity 101.

[0072] In this way, when the battery cell 200 expands due to the charging and discharging process, the push plate 40 will timely retract and closely adhere to the side beam 10, ensuring that the side wall of the battery cell 200 always obtains a flat and continuous support surface during the expansion, thereby effectively avoiding the deformation, damage and even safety risk of the battery cell 200 due to uneven support. By configuring the side beam 10 and the push plate 40 to be flush on the side of the battery cell accommodating cavity 101, a flat support surface is constructed for the battery cell 200, which can uniformly disperse the pressure generated by the expansion of the battery cell 200, preventing the local support stress from being too large.

[0073] Secondly, such a configuration also helps to a certain extent in the installation and maintenance of the battery cell 200. Since the side beam 10 and the push plate 40 are on the same plane, the battery cell 200 can be more easily inserted or removed, thereby reducing the operation difficulty and time cost.

[0074] As shown in Figure 1 and Figure 3 , the frame 100 according to some embodiments of the application further comprises a pressure sensor 60 for detecting the pressure generated by the elastic body 20 on the battery cell 200, and the pressure sensor 60 is electrically connected with the driving and adjusting structure 30.

[0075] Specifically, the pressure sensor 60 is electrically connected with the driving adjustment structure 30. When the battery cell 200 is placed in the side beam 10 and supported by the elastic body 20, the pressure sensor 60 can monitor the pressure generated by the elastic body 20 on the battery cell 200 in real time.

[0076] Once the pressure detected by the pressure sensor 60 reaches the preset value, it transmits a signal to the pressure monitoring control unit. After receiving the signal, the control unit immediately issues an instruction to prohibit the elastic body 20 from extending to the side of the battery cell 200. In this way, it can be ensured that the battery cell 200 is properly pre-tightened after expansion, avoiding problems such as deformation, damage or performance degradation of the battery cell 200 caused by excessive pressure.

[0077] In some alternative embodiments, as shown in Figure 3 and Figure 5 The elastic body 20 includes an air spring 22, and the pressure sensor 60 is arranged in the air spring 22 or at the air interface 221 of the air spring 22.

[0078] Alternatively, the air spring 22 includes a rubber capsule structure. The air spring 22 realizes elastic expansion and contraction by inflating and deflating the rubber capsule. Because the air spring 22 has good elastic properties, it can withstand a certain load. This property enables the air spring 22 to provide stable and reliable support force for the battery cell 200.

[0079] Alternatively, the expansion and contraction state of the air spring 22 can be achieved by changing the air chamber volume in the rubber capsule. In this way, the expansion and contraction degree of the air spring 22 can be changed accordingly to adapt to the different expansion volumes of the battery cell 200 in different states.

[0080] At the same time, the air spring 22 also has a certain vibration absorption capacity. When subjected to external vibration or impact, the air spring 22 can effectively absorb and disperse these vibration energies by virtue of its internal elastic medium (such as air or nitrogen) and rubber capsule structure. This vibration absorption property not only helps to protect the battery cell 200 from external interference, but also improves the stability and durability of the battery cell 200 in the battery cell cavity 101, thereby ensuring stable operation of the battery pack 1000 under various road conditions.

[0081] In some embodiments, a linear motion bearing 51 is arranged on the air spring 22. This arrangement can improve the movement accuracy of the air spring 22 and ensure that the air spring 22 can strictly expand and contract in the preset direction.

[0082] When the pressure sensor 60 is directly installed inside the air spring 22, it can directly sense the pressure change of the medium inside the spring. When the battery cell 200 expands due to charging and discharging or temperature change, it will squeeze the air spring 22, causing the internal pressure of the air spring 22 to rise. The pressure sensor 60 can sense and capture this pressure change, and then convert it into an electrical signal for transmission. When the system receives this electrical signal, it can quickly respond and take predetermined measures, such as reducing the air chamber volume of the air spring 22 by releasing air, to flexibly adapt to the expansion state of the battery cell 200.

[0083] Alternatively, the pressure sensor 60 can be provided at the air interface 221 of the air spring 22. In this way, the pressure sensor 60 can also accurately monitor the air pressure change inside the air spring 22.

[0084] When the volume of the battery cell 200 changes, it will correspondingly affect the air chamber volume of the air spring 22, and then cause the air pressure inside the air spring 22 to change. When this change is captured by the pressure sensor 60 provided at the air interface 221, it can be converted into a corresponding electrical signal. The system can change the air chamber volume of the air spring 22 to adapt to the volume change of the battery cell 200 according to the feedback of the electrical signal.

[0085] In addition, by providing the pressure sensor 60 at the air interface 221, it is also convenient to maintain, replace or calibrate it when needed, simplifying the maintenance process.

[0086] In some optional embodiments, the elastic body 20 includes the air spring 22. In combination with Figure 1 , Figure 2 and Figure 5 , the driving adjustment structure 30 includes an air passage 31 and a control valve 32. The air passage 31 is formed in the side beam 10, and the air passage 31 communicates with the air interface 221 of the air spring 22. The control valve 32 is connected to the air passage 31.

[0087] First, the air passage 31 is formed in the side beam 10, which can ensure efficient flow of gas between the control valve 32 and the air interface 221, reducing bends and resistance. At the same time, it can improve the response speed to system instructions in order to adjust the air chamber volume in time.

[0088] Secondly, the air passage 31 needs to withstand frequent gas flow and possible vibration, so forming the air passage 31 directly in the side beam 10 can improve its durability and reliability to ensure stability during long-term use.

[0089] The control valve 32 is responsible for adjusting the opening and closing degree of the air passage 31 according to the control instruction, so as to control the amount of gas entering or exiting the air spring 22, achieving the purpose of adjusting the air pressure.

[0090] Therefore, in practical applications, the air passage 31 and the control valve 32 work together to achieve precise adjustment of the air pressure of the air spring 22. When it is necessary to adjust the air pressure of the air spring 22, the control system sends a command to the control valve 32. The control valve 32 adjusts the opening and closing degree of the air passage 31 according to the command, thereby changing the amount of gas entering or exiting the air spring 22. The air passage 31 ensures that the gas can flow efficiently between the control valve 32 and the air spring 22, achieving rapid adjustment of the air pressure.

[0091] In some alternative embodiments, control valve 32 includes a constant pressure valve.

[0092] A constant pressure valve is used to maintain a constant pressure in a system. First, the desired pressure value is set. When the pressure falls below the set value, the valve opens, allowing gas to enter and replenish the pressure. When the system pressure exceeds the set value, the valve closes, preventing further pressure increases. By maintaining a constant pressure, it helps reduce system fluctuations and instability, thereby improving the stability and reliability of the entire system.

[0093] Alternatively, the drive adjustment structure 30 may also include a controller, and the control valve 32 may include at least one of an inflation valve and a pressure relief valve.

[0094] Specifically, the controller receives feedback signals from the pressure sensor 60 and outputs corresponding control commands to the control valve 32.

[0095] When the controller receives a signal that the internal air pressure of the air spring 22 is lower than the set value, it will issue a command to open the inflation valve, allowing gas from an external air source to enter the air spring 22 to replenish the air pressure. The degree and duration of the inflation valve opening are controlled by the controller according to actual needs.

[0096] When the controller detects that the internal air pressure of the air spring 22 exceeds the set value, the controller will issue a command to open the pressure relief valve, allowing gas to be discharged from the air spring 22 to reduce the air pressure. Similarly, the degree of opening and duration of the pressure relief valve can also be controlled by the controller.

[0097] According to some embodiments of the frame 100 of the present invention, some of the side beams 10 are provided with receiving grooves 102 and air passages 31, and some of the side beams 10 are provided with control valves 32. This arrangement can optimize the spatial layout and also help to achieve precise control of gas flow.

[0098] Specifically, some of the side beams 10 are provided with receiving grooves 102. These receiving grooves 102 may have specific shapes and sizes to install and fix other components, such as air springs 22, pressure sensors 60, etc. The arrangement of the receiving grooves 102 ensures that these components can be stably and securely installed on the side beams 10, while reducing the space occupied and making the structure of the battery pack 1000 more compact.

[0099] At the same position of the containing groove 102, the edge beam 10 is configured with an air passage 31. Since the air passage 31 is used for gas flow, it allows the gas to flow freely inside the edge beam 10 or between the edge beams 10. Optionally, the air passage 31 is configured as a continuous and smooth channel to reduce the resistance of gas flow and ensure that the gas can smoothly reach the control valve 32 or other target positions.

[0100] On another part of the edge beam 10, the control valve 32 is installed. The control valve 32 is used to control the flow and / or flow rate of the gas. By adjusting the opening and closing state of the control valve 32, the time when the gas enters or leaves the air spring 22 can be accurately controlled, so as to realize the accurate adjustment of the air pressure.

[0101] Referring to Figure 2 , the driving adjustment structure 30 further comprises an air pipe 33.

[0102] Optionally, the air pipe 33 is a piece of high-strength and corrosion-resistant material to ensure good air tightness and durability during long-term use.

[0103] One end of the air pipe 33 is connected to the air passage 31. It ensures that the gas can smoothly enter the air passage 31 from the air pipe 33.

[0104] The other end is connected to the control valve 32. By adjusting the control valve 32, the flow and / or flow rate of the gas can be accurately controlled.

[0105] In some optional embodiments, the control valve 32 on the edge beam 10 independently controls the air passage 31 on a part of the edge beam 10.

[0106] This is because the gap between the edge beam 10 and the side of the battery cell 200 may differ due to assembly and material itself tolerance, and the support force required by different sides of the battery cell 200 may be different. The embodiments of the present application also adopt a more fine control strategy. Specifically, the elastomer 20 on different sides of the edge beam 10 is controlled by a separate control valve 32. In this way, even if the gap size on different sides is different, the pre-tightening force of the air spring 22 on different sides of the battery cell 200 can be ensured to be the same by respectively adjusting the inflation amount of the air spring 22 on different sides.

[0107] In some optional embodiments, the control valve 32 is an electromagnetic control valve 32.

[0108] According to some embodiments as shown in Figure 4 , the frame 100 of the battery pack further comprises a gas supply unit 70. The gas supply unit 70 is connected to the control valve 32 through the air pipe 33.

[0109] According to the frame 100 of some embodiments of the present application, the edge beam 10 is a profiled part, and the accommodating groove 102 is a profiled cavity integrally formed on the edge beam 10.

[0110] In this way, the accommodating groove 102 is part of the overall structure, rather than being formed by additional processing. On the one hand, this can simplify the manufacturing process, improve the connection strength between the accommodating groove 102 and the edge beam 10, and ensure the stability and reliability of the components during installation and fixation.

[0111] Secondly, by forming the accommodating groove 102 as a profiled cavity integrally formed on the edge beam 10, the internal space of the edge beam 10 can be fully utilized, reducing or even avoiding additional space occupation. This makes the overall structure more compact and improves space utilization, making the layout of these components more reasonable.

[0112] According to the battery pack 1000 of the second aspect of the present application, it comprises a frame 100 and a battery cell 200. The frame 100 is the frame 100 of the battery pack of the first aspect of the present application. The battery cell 200 is arranged in the battery cell accommodating cavity 101.

[0113] By using the frame 100 of the above-mentioned embodiments, the stability of the battery cell 200 in the battery pack 1000 can be improved, ensuring that the battery cell 200 is constantly and appropriately restrained throughout its life cycle, thereby effectively protecting the cycle performance of the battery cell 200.

[0114] According to the vehicle of the third aspect of the present application, it comprises the battery pack 1000 of the second aspect of the present application.

[0115] It is worth noting that the vehicle can be a fuel car, a gas car or a new energy car, and the new energy car can be a pure electric car, a hybrid car or an extended range car, etc. The vehicle is provided with the battery pack 1000, which can be arranged at the bottom, head or tail of the vehicle. The battery pack 1000 can be used for power supply of the vehicle, for example, the battery pack 1000 can be used as the operating power source of the vehicle. The vehicle can also include a control system and a motor, and the control system is used to control the battery pack 1000 to supply power to the motor, for example, to meet the power demand of the vehicle during starting, navigation and driving. In some embodiments of the present application, the battery pack 1000 can not only be used as the operating power source of the vehicle, but also be used as the driving power source of the vehicle, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle.

[0116] By using the battery pack 1000 of the above-mentioned embodiments, the reliability and stability of the vehicle can be improved.

[0117] Reference will now be made to Figure 1 - Figure 5A frame 100 of a battery pack according to an embodiment of the present application is described in detail with a specific embodiment. It is worth understanding that the following description is only exemplary and is not a specific limitation of the application.

[0118] Referring to Figure 1 and Figure 2 , the frame 100 of the battery pack comprises a plurality of side beams 10, an elastic body 20, a driving adjustment structure 30, a push plate 40, a guide structure 50, a pressure sensor 60, and a gas supply unit 70.

[0119] The side beams 10 are connected in sequence, and the plurality of side beams 10 enclose a cell accommodating cavity 101.

[0120] Some of the side beams 10 are provided with accommodating grooves 102. The side beams 10 are profiled parts, and the accommodating grooves 102 are cavities integrally formed on the side beams 10.

[0121] At least one side beam 10 is provided with an accommodating groove 102 on the side facing the cell accommodating cavity 101.

[0122] The elastic body 20 is arranged in the accommodating groove 102, one end of the elastic body 20 is connected to the side beam 10, and the other end is used to press the cell 200 to adjust the expansion force of the cell 200.

[0123] The driving adjustment structure 30 is connected to the elastic body 20 to adjust the extension amount of the elastic body 20.

[0124] Referring to Figure 3 , the push plate 40 is connected to the end of the elastic body 20 facing the cell accommodating cavity 101, and the elastic body 20 is pressed on the cell 200 through the push plate 40.

[0125] The guide structure 50 is connected between the push plate 40 and the side beam 10. The guide structure 50 comprises a linear motion bearing 51.

[0126] The linear motion bearing 51 is two, the two linear motion bearings 51 are arranged in the height direction of the frame 100, and the elastic body 20 is located between the at least two linear motion bearings 51.

[0127] Referring to Figure 4 , the elastic body 20 has a shortest position, at which the push plate 40 is located in the accommodating groove 102, and the side beams 10 and the push plate 40 are flush on the side facing the cell accommodating cavity 101.

[0128] Referring to Figure 3 , the pressure sensor 60 is used to detect the pressure generated by the elastic body 20 on the cell 200. The pressure sensor 60 is electrically connected to the driving adjustment structure 30.

[0129] Referring to Figure 5 , the elastic body 20 comprises an air spring 22.

[0130] The air spring 22 includes an air connection 221. The pressure sensor 60 is provided at the air connection 221 of the air spring 22.

[0131] Referring to Figure 2 and Figure 5 , the drive adjustment structure 30 includes an air passage 31, a control valve 32, and an air pipe 33.

[0132] The air passage 31 is formed in the side beam 10 in which the accommodation groove 102 is formed, and the air passage 31 communicates with the air connection 221 of the air spring 22.

[0133] The control valve 32 is provided in another part of the side beam 10, and the control valve 32 is connected to the air passage 31. The control valve 32 includes a constant pressure valve.

[0134] The air pipe 33 is connected at one end to the air passage 31 and at the other end to the control valve 32.

[0135] Referring to Figure 1 and Figure 4 , the air supply unit 70 is connected to the control valve 32 through the air pipe 33.

[0136] Other configurations of the frame 100 of the battery pack according to the embodiments of the present application, such as the battery pack 1000 and vehicles, and operations are known to those skilled in the art, and thus will not be described in detail.

[0137] In the description of the specification, the description referring to the terms "embodiment", "example", and the like means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. Illustrative expressions of the above terms in the specification do not necessarily refer to the same embodiment or example. Also, the specific features, structures, materials, or characteristics described can be combined in any one or more embodiments or examples in an appropriate manner.

[0138] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, alternatives, and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A battery pack frame, characterized in that, include: Side beams, wherein multiple side beams are connected in sequence, and the multiple side beams together form a cell cavity, and at least one side beam has a receiving groove on the side facing the cell cavity; An elastomer is disposed in the receiving groove, one end of the elastomer is connected to the side beam, and the other end is used to compress the battery cell to adjust the expansion force of the battery cell. A drive adjustment structure is connected to the elastic body to adjust the amount of expansion and contraction of the elastic body; The elastomer includes an air spring; The drive adjustment structure includes: An air passage is formed within the side beam, and the air passage is connected to the air inlet of the air spring; A control valve, which is connected to the air passage.

2. The battery pack frame according to claim 1, characterized in that, Also includes: A pusher plate is connected to one end of the elastomer facing the cell cavity, and the elastomer is pressed onto the cell by the pusher plate.

3. The battery pack frame according to claim 2, characterized in that, Also includes: A guide structure connecting the push plate and the side beam.

4. The battery pack frame according to claim 3, characterized in that, The guiding structure includes a linear motion bearing.

5. The battery pack frame according to claim 4, characterized in that, There are at least two linear motion bearings, which are arranged at intervals along the height direction of the frame, and the elastic body is located between the at least two linear motion bearings.

6. The battery pack frame according to claim 2, characterized in that, The elastomer has a shortest position, in which the pusher plate is located within the receiving groove, and the side beam and the pusher plate are flush with each other on the side facing the cell cavity.

7. The battery pack frame according to claim 1, characterized in that, Also includes: A pressure sensor is used to detect the pressure exerted by the elastomer on the battery cell, and the pressure sensor is electrically connected to the drive adjustment structure.

8. The battery pack frame according to claim 7, characterized in that, The pressure sensor is located inside the air spring or at the air inlet of the air spring.

9. The frame of the battery pack according to claim 1, characterized in that, The control valve includes a constant pressure valve; Alternatively, the drive adjustment structure may further include a controller, and the control valve may include at least one of an inflation valve and a pressure relief valve.

10. The frame of the battery pack according to claim 1, characterized in that, Among the multiple side beams, some of the side beams are provided with the receiving groove and the air passage, and some of the side beams are provided with the control valve; The drive adjustment structure further includes an air pipe, one end of which is connected to the airway, and the other end of which is connected to the control valve.

11. The frame of the battery pack according to any one of claims 1-8, characterized in that, The side beam is a shaped component, and the receiving groove is a cavity integrally formed on the side beam.

12. A battery pack, characterized in that, include: The frame is the frame of the battery pack according to any one of claims 1-11; A battery cell, wherein the battery cell is disposed within the battery cell cavity.

13. A vehicle, characterized in that, Includes the battery pack according to claim 12.

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