Battery components and electrical equipment

Abstract

This application provides a battery assembly and an electrical device. The battery assembly includes: a battery housing with at least one fixing point; and a flexible connector connected to the fixing point and configured to connect to a body to be connected, thereby suspending the battery housing to the body. This battery assembly aims to reduce damage.

Description

Technical Field

[0001] This application relates to the field of battery technology, and more particularly to a battery assembly and electrical device. Background Technology

[0002] With the rapid development of economy and technology, battery modules have been widely used in energy storage, mobile devices, and transportation. Among them, battery modules in new energy vehicles, as the core components of the vehicle's power system, can realize energy storage, power output, and energy management, directly affecting the vehicle's safety and range.

[0003] Battery components are often mounted on the body to be connected (such as the chassis or frame), and are subjected to dynamic external forces from multiple dimensions such as road vibration, collision, and bumps during driving. They are prone to damage during long-term use, which affects the safety of the vehicle and the performance of the battery. Summary of the Invention

[0004] This application provides battery components and electrical devices to reduce damage to battery components.

[0005] In a first aspect, embodiments of this application provide a battery assembly, including:

[0006] A battery casing, wherein the battery casing is provided with at least one fixing point;

[0007] A flexible connector is attached to the fixed point and configured to connect to the body to be connected, thereby connecting the battery housing and the body to be connected.

[0008] In one possible implementation, the battery casing is provided with at least two fixing points;

[0009] The flexible connector is connected to the at least two fixed points.

[0010] In one possible implementation, the number of flexible connectors is at least two, and the at least two flexible connectors are respectively located on opposite sides of the length direction of the battery casing;

[0011] The battery casing has at least two fixing points on each of its opposite sides along its length, and the flexible connector is inserted through each of the at least two fixing points on each side. The two ends of the flexible connector are connected to the body to be connected.

[0012] And / or,

[0013] At least two of the flexible connectors are located on opposite sides of the width direction of the battery casing;

[0014] The battery casing has at least two fixing points on each of its opposite sides along its width direction. The flexible connector is inserted through each of the at least two fixing points on each side, and the two ends of the flexible connector are connected to the body to be connected.

[0015] In one possible implementation, a plurality of fixing points located on one side of the battery casing are arranged in at least two rows along the height direction of the battery casing, and the flexible connectors are correspondingly inserted into the fixing points in the same row; and / or,

[0016] When at least two of the flexible connectors are located on opposite sides of the length direction of the battery casing, the angle between the connecting end of the flexible connector and the width direction of the battery casing is greater than or equal to 1 degree and less than or equal to 45 degrees.

[0017] When at least two of the flexible connectors are located on opposite sides of the width direction of the battery casing, the angle between the connecting end of the flexible connector and the length direction of the battery casing is greater than or equal to 1 degree and less than or equal to 45 degrees.

[0018] In one possible implementation, the number of flexible connectors is at least two, and the at least two flexible connectors are distributed circumferentially and / or on the top surface of the battery casing;

[0019] The outer peripheral surface and / or top surface of the battery casing are provided with at least two fixing points. One end of each flexible connector is connected to one of the fixing points, and the other end is connected to the body to be connected.

[0020] In one possible implementation, the angle between the flexible connector and the height direction of the battery casing is greater than or equal to 0 degrees and less than or equal to 80 degrees.

[0021] In one possible implementation, the number of flexible connectors is at least two, and the at least two flexible connectors are respectively located on the bottom surface of the battery casing;

[0022] The bottom surface of the battery casing is provided with a plurality of fixing points, and the flexible connector is inserted into at least two of the fixing points arranged along the length and / or width of the battery casing.

[0023] In one possible implementation, at least two of the flexible connectors include at least two first connectors and at least one second connector;

[0024] The at least two first connectors are arranged at intervals along the width direction of the battery casing and are connected at both ends to the body to be connected. The second connector connects two adjacent first connectors.

[0025] In one possible implementation, at least one of the first connectors passes through at least two corresponding fixing points; and / or,

[0026] The angle between the connecting end of the first connector and the length direction of the battery casing is greater than or equal to 1 degree and less than or equal to 45 degrees; and / or,

[0027] The two ends of the second connector are also connected to the body to be connected.

[0028] In one possible implementation, when the second connector is connected to the body to be connected, the angle between the connecting end of the second connector and the width direction of the battery casing is greater than or equal to 1 degree and less than or equal to 45 degrees.

[0029] In one possible implementation, at least two of the flexible connectors also extend to the side of the battery housing to wrap around the battery housing.

[0030] In one possible implementation, at least two of the flexible connectors are spaced apart along the width direction of the battery casing; and / or,

[0031] At least two of the flexible connectors are arranged at intervals along the length of the battery casing; and / or,

[0032] The angle between the outer end of the flexible connector and the height direction of the battery casing is greater than or equal to 0 degrees and less than or equal to 80 degrees.

[0033] In one possible implementation, a connecting portion is provided on the side of the body to be connected;

[0034] The battery casing has at least two fixing points on at least one of its opposite sides along its length, and the flexible connector on that side sequentially connects to the corresponding at least two fixing points along the width direction of the battery casing and connects to the connecting portion; and / or,

[0035] At least two fixing points are provided on at least one of the opposite sides of the battery casing along its width direction, and the flexible connector on that side sequentially connects the corresponding at least two fixing points along the length direction of the battery casing and connects to the connecting part.

[0036] In one possible implementation, the flexible connector includes ropes and / or chains; and / or,

[0037] The flexible connector has a length greater than or equal to 1 meter and less than or equal to 20 meters; and / or,

[0038] The yield strength of the flexible connector is greater than or equal to 10 MPa and less than or equal to 2000 MPa; and / or,

[0039] The tensile strength of the flexible connector is greater than or equal to 10 MPa and less than or equal to 2000 MPa; and / or,

[0040] The elastic modulus of the flexible connector is greater than or equal to 100,000 MPa and less than or equal to 1,000,000 MPa; and / or,

[0041] The tensile elongation at break of the flexible connector is greater than or equal to 1% and less than or equal to 80%; and / or,

[0042] The battery assembly also includes a damping structure disposed between the battery housing and the body to be connected.

[0043] Secondly, embodiments of this application provide an electrical appliance, including:

[0044] The object to be connected;

[0045] As described above, the battery assembly is connected to the body to be connected via a flexible connector.

[0046] The battery assembly and electrical device provided in this application include a battery casing and a flexible connector. The battery casing has at least one fixed point, and the flexible connector is connected to the fixed point and to the object to be connected, thereby connecting the battery casing to the object. The flexible connector absorbs the energy of external forces by utilizing its tensile deformation or its characteristic of only transmitting tensile force, preventing the direct transmission of external forces to the battery casing, achieving buffer protection, significantly reducing mechanical damage to the battery casing and its internal components caused by external forces, and extending its service life. Attached Figure Description

[0047] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0048] Figure 1 A top view of the first type of battery assembly provided in this application;

[0049] Figure 2 A side view of the first type of battery assembly provided in this application;

[0050] Figure 3 A perspective view of the first type of battery assembly provided in this application;

[0051] Figure 4 A top view of the second type of battery assembly provided in this application;

[0052] Figure 5 A side view of the second type of battery assembly provided in this application;

[0053] Figure 6 Bottom view of the second type of battery assembly provided in this application;

[0054] Figure 7 A perspective view of the second type of battery assembly provided in this application;

[0055] Figure 8 A top view of the third type of battery assembly provided in this application;

[0056] Figure 9 A side view of the third type of battery assembly provided in this application;

[0057] Figure 10 Another side view of the third type of battery assembly provided in this application;

[0058] Figure 11 A perspective view of the third type of battery assembly provided in this application;

[0059] Figure 12 A top view of the fourth type of battery assembly provided in this application;

[0060] Figure 13 A side view of the fourth type of battery assembly provided in this application;

[0061] Figure 14 Another side view of the fourth type of battery assembly provided in this application;

[0062] Figure 15 A perspective view of the fourth type of battery assembly provided in this application;

[0063] Figure 16 A top view of the fifth type of battery assembly provided in this application;

[0064] Figure 17 A side view of the fifth type of battery assembly provided in this application;

[0065] Figure 18 A perspective view of the fifth type of battery assembly provided in this application;

[0066] Figure 19 A side view of the sixth type of battery assembly provided in this application.

[0067] Explanation of reference numerals in the attached figures:

[0068] 10-Battery casing;

[0069] 11-Fixed point;

[0070] 20 - Flexible connector.

[0071] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0072] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0073] In existing technologies, battery modules are typically fixed to their corresponding connected components using rigid connections. For example, battery modules are connected to the metal frame (such as longitudinal beams or connecting plates) of the vehicle frame or floor using fastening bolts. This fixing method often transfers external forces to the battery module, causing stress and damage, thus affecting the battery module's lifespan and performance. Increasing the strength of the rigid connection can reduce damage to the battery module caused by external forces, but the effect is often unsatisfactory.

[0074] The battery assembly and electrical equipment provided in this application utilize the tensile deformation of flexible connectors or the characteristic of only transmitting tensile force to absorb the energy of external forces, blocking the direct transmission of external forces to the battery casing, thereby achieving buffer protection, significantly reducing mechanical damage to the battery casing and internal components caused by external forces, and extending service life.

[0075] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0076] See Figures 1 to 18 This application provides an electrical device, which can be, but is not limited to, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc. Electric vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc.

[0077] The aforementioned electrical equipment includes a component to be connected and a battery assembly. The battery assembly is connected to the component to be connected via a flexible connector 20 to form a flexible connection, blocking the transmission path of external forces to the battery assembly and reducing damage to the battery assembly. The component to be connected can be a vehicle frame or chassis, etc., and the battery assembly is used to store and provide electrical energy. The battery assembly is, for example, a lithium-ion battery pack, which has high specific energy of individual cells and low internal resistance, resulting in good driving range. The specific types of the component to be connected and the battery assembly in this application embodiment are not limited and can be selected as needed.

[0078] For example, an electric vehicle may have a battery pack internally located at the bottom, front, or rear of the vehicle. The battery pack can be used to power the electric vehicle; for example, it can serve as the operating power source. The electric vehicle may also include a controller and a motor. The controller controls the battery pack to supply power to the motor, for example, to meet the power requirements for starting, navigation, and driving the electric vehicle. In some embodiments of this application, the battery pack can not only serve as the operating power source but also as the driving power source, replacing or partially replacing fuel or natural gas to provide driving power to the electric vehicle.

[0079] Continue reading Figures 1 to 18 The battery assembly includes a battery housing 10 and a flexible connector 20. The battery housing 10 is provided with at least one fixed point. The flexible connector 20 is connected to the fixed point 11 and is configured to connect to the object to be connected, thereby connecting the battery housing 10 to (e.g., for hoisting) the object to be connected. By utilizing the tensile deformation or the characteristic of only transmitting tensile force of the flexible connector 20, the energy of external forces is absorbed, preventing the external force from being directly transmitted to the battery housing 10, thus achieving buffer protection, significantly reducing mechanical damage to the battery housing 10 and its internal components caused by external forces, and extending its service life.

[0080] The battery housing 10 can be the housing of a battery pack or the housing of a battery module. When the battery assembly is a battery pack, the battery housing 10 corresponds to the housing of the battery pack; when the battery assembly is a battery module, the battery housing 10 corresponds to the housing of the battery module. The battery assembly includes the battery housing 10 and individual battery cells disposed within the battery housing 10. The battery housing 10 can be rectangular, and multiple individual battery cells can be provided, connected in parallel, series, or mixed. The battery housing 10 may include a tray to support the individual battery cells. The specific structure and connection method of the battery housing 10 are not limited in this application embodiment and can be designed as needed.

[0081] The flexible connector 20 is connected to the battery housing 10 and to the object to be connected, thereby connecting the battery housing 10 to the object. For example, the battery assembly is fixed to the vehicle, and the installation position of the battery assembly is flexible, with no restrictions on the structure in which it is installed. For instance, the vehicle frame or beam provides fixed load-bearing support, and the battery housing 10 can be fixed directly below the frame or beam, to the side of the frame or beam, or above the frame or beam and on the rear of the vehicle body. The battery housing 10 is connected using the flexible connector 20, which absorbs the energy impact when the vehicle is subjected to external vibrations, shocks, or collisions, preventing the transmission of these forces to the battery housing 10, thus protecting the battery housing 10 and its internal components.

[0082] At least one flexible connector 20 can be provided as needed; that is, the number of flexible connectors 20 can be one, two, or more. When there is only one flexible connector 20, other connection structures are also provided between the battery housing 10 and the object to be connected to improve the stability of the battery assembly. When there are at least two flexible connectors 20, the battery housing 10 and the object to be connected can be connected solely through the flexible connector 20, or other connection structures can be provided.

[0083] In some possible examples, the number of flexible connectors 20 is less than or equal to 100. This simplifies the battery assembly structure and reduces entanglement between the flexible connectors 20. Furthermore, each flexible connector 20 is connected to the battery assembly and to the flexible connector 20 itself. Having less than or equal to 100 flexible connectors reduces the complexity of battery assembly installation and improves installation efficiency. The aforementioned flexible connectors 20 can be used individually or in combination. When multiple flexible connectors 20 are used in combination, a fixing structure can be added, such as using binding ropes for securing them together.

[0084] In some possible examples, the flexible connector 20 includes a rope and / or a chain; and / or, the length of the flexible connector 20 is greater than or equal to 1 meter and less than or equal to 20 meters; and / or, the yield strength of the flexible connector 20 is greater than or equal to 10 MPa and less than or equal to 2000 MPa; and / or, the tensile strength of the flexible connector 20 is greater than or equal to 10 MPa and less than or equal to 2000 MPa; and / or, the elastic modulus of the flexible connector 20 is greater than or equal to 100,000 MPa and less than or equal to 1,000,000 MPa; and / or, the tensile elongation at break of the flexible connector 20 is greater than or equal to 1% and less than or equal to 80%; and / or, the battery assembly further includes a damping structure disposed between the battery housing 10 and the body to be connected.

[0085] The flexible connector 20 can be a rope made of fiber, synthetic material, metal material, etc. (which has natural bending characteristics and weak bending resistance, can only withstand tension, not pressure or bending load), or a chain composed of multiple rigid links (which can only transmit tension when the whole is in motion, and cannot withstand pressure or bending). It forms a flexible constraint on the battery casing 10, restricting the movement of the object only through the tension in the axial direction, and cannot withstand pressure or resist bending.

[0086] The flexible connector 20 may be one or more, and these flexible connectors 20 may all be ropes or all be chains. When there are two or more flexible connectors 20, these flexible connectors 20 may also be partially ropes and partially chains.

[0087] Understandably, when there are at least two ropes, these ropes can be made of the same or different materials. When there are at least two chains, these chains can be made of the same or different materials. When both ropes and chains are connected to the same battery housing 10, that is, when ropes and chains are used together in the same structure, the ropes and chains can be made of the same or different materials.

[0088] The flexible connector 20 has a length greater than or equal to 1 meter and less than or equal to 20 meters, for example, 1 meter, 5 meters, 10 meters, 15 meters, or 20 meters, allowing for flexible adjustment of the installation height of the battery casing 10. The yield strength of the flexible connector 20 is greater than or equal to 10 MPa and less than or equal to 2000 MPa, for example, 235 MPa or 275 MPa, to improve fatigue resistance. The tensile strength of the flexible connector 20 is greater than or equal to 10 MPa and less than or equal to 2000 MPa, for example, 500 MPa, to ensure load-bearing capacity. The elastic modulus of the flexible connector 20 is greater than or equal to 10 GPa and less than or equal to 1000 GPa, for example, 200 GPa, to reduce elastic deformation. The tensile elongation at break of the flexible connector 20 is greater than or equal to 1% and less than or equal to 80%, for example, 25%, to ensure toughness.

[0089] A damping structure is disposed between the battery housing 10 and the body to be connected, for example, around the perimeter of the battery housing 10. The damping structure is also spaced apart from the flexible connector 20. One end of the damping structure is connected to the battery housing 10, and the other end is connected to the body to be connected, to limit the swaying of the battery housing 10, for example, limiting the swaying of the battery housing 10 along its length and / or width. The damping structure is rigidly connected to the body to be connected, and its installation does not interfere with the distribution path of the flexible connector 20. It can reduce the three-dimensional impact load transmission rate by 40% to 60% and maintain the geometric constraint integrity of the battery assembly. The damping structure can be a viscous damper, a tuned mass damper, a magnetorheological damper, an electrorheological damper, etc. The damping structure can also be a rubber component, a spring component, a pressure bar, etc., to limit the displacement of the battery housing 10, offering simplicity, flexibility, and convenient installation and operation.

[0090] In some possible examples, the plane perpendicular to the extension direction of the flexible connector 20 is used as the cross-section. The cross-sectional shape of the flexible connector 20 can be circular, elliptical, rectangular, etc., and the cross-sectional dimension of the flexible connector 20 is greater than 1 mm and less than or equal to 100 mm. The cross-sectional dimension can be length or width, major axis or minor axis, or diameter or equivalent diameter. When the cross-sectional shape of the flexible connector 20 is an irregular shape, the cross-sectional dimension can be the length or width of the smallest enclosing rectangle.

[0091] In some possible examples, the battery casing 10 is provided with at least two fixing points 11; the flexible connector 20 is connected to at least two fixing points 11. Using at least two fixing points 11, the distribution and angle of the flexible connector 20 can be adjusted to establish a constraint network in three-dimensional space, thereby achieving displacement restriction and energy absorption, while also providing flexible and convenient installation without the need to control the flatness of the mounting surface.

[0092] At least two fixing points 11 can be provided as needed on at least one of the side, bottom, and top surfaces of the battery housing 10. The fixing points 11 can be of any form; for example, a fixing point 11 can be a lifting lug and / or a through hole. The number of fixing points 11 can be greater than or equal to two, allowing for flexible connection of the flexible connector 20 as needed. Providing multiple fixing points 11 can reduce stress concentration at single points and extend service life. Alternatively, the number of fixing points 11 can be less than or equal to 100 to simplify the structure of the battery housing 10.

[0093] In some possible implementations, the number of flexible connectors 20 is at least two, and the at least two flexible connectors 20 are respectively located on opposite sides of the battery housing 10 along its length direction; the battery housing 10 has at least two fixing points 11 respectively on opposite sides along its length direction, and a flexible connector 20 is respectively inserted into the at least two fixing points 11 on each side, with both ends of the flexible connector 20 connected to the body to be connected. And / or, the at least two flexible connectors 20 are respectively located on opposite sides of the battery housing 10 along its width direction; the battery housing 10 has at least two fixing points 11 respectively on opposite sides along its width direction, and a flexible connector 20 is respectively inserted into the at least two fixing points 11 on each side, with both ends of the flexible connector 20 connected to the body to be connected.

[0094] See Figures 1 to 3 Flexible connectors 20 are mounted on the sides of the battery housing 10. For example, at least two flexible connectors 20 are arranged in pairs along the length direction of the battery housing 10, meaning that flexible connectors 20 are distributed on opposite sides of the battery housing 10 along its length. As another example, at least two flexible connectors 20 are arranged in pairs along the width direction of the battery housing 10, meaning that flexible connectors 20 are distributed on opposite sides of the battery housing 10 along its width. Yet another example, at least two flexible connectors 20 are arranged in pairs along both the length and width directions of the battery housing 10, meaning that flexible connectors 20 are distributed on opposite sides of the battery housing 10 along both its length and width, with the flexible connectors 20 arranged in both the length and width directions of the battery housing 10. The length direction of the battery housing 10 is as follows... Figures 1 to 18 As shown in the X direction, the width direction of the battery casing 10 is as follows: Figures 1 to 18 Y direction shown.

[0095] To connect the flexible connector 20, at least two fixing points 11 are respectively provided on opposite sides of the battery housing 10 along its length direction, and / or at least two fixing points 11 are respectively provided on opposite sides of the battery housing 10 along its width direction. A series of fixing points 11 are distributed on opposite sides of the battery housing 10 along its length direction and / or its width direction. The flexible connector 20 is inserted into at least two fixing points 11 on each side, and both ends of the flexible connector 20 are connected to the body to be connected. This can improve the uniformity of force distribution on the flexible connector 20.

[0096] For example, such as Figure 1As shown, the battery casing 10 has at least two fixing points 11 on each of its two opposite sides along its width direction, for example, four fixing points 11. One to ten flexible connectors 20 are inserted into the at least two fixing points 11 on the same side. The flexible connectors 20 pass sequentially through these fixing points 11 along the length direction of the battery casing 10, and the two ends of the flexible connectors are connection ends, which are connected to the body to be connected.

[0097] For example, the battery casing 10 has at least two fixing points 11 on each of its opposite sides along its length and width directions. Flexible connectors 20 pass through the at least two fixing points 11 on the same side. The flexible connectors 20, which are opposite each other along the length direction of the battery casing 10, pass sequentially through the corresponding fixing points 11 along the width direction of the battery casing 10; similarly, the flexible connectors 20, which are opposite each other along the width direction of the battery casing 10, pass sequentially through these fixing points 11 along the length direction of the battery casing 10. The two ends of the flexible connector are connection ends, which are connected to the body to be connected.

[0098] When at least two flexible connectors 20 are located on opposite sides of the battery housing 10 along its length, the angle between the connecting end of the flexible connector 20 and the width direction of the battery housing 10 is greater than or equal to 1 degree and less than or equal to 45 degrees. Similarly, when at least two flexible connectors 20 are located on opposite sides of the battery housing 10 along its width, the angle between the connecting end of the flexible connector 20 and the length direction of the battery housing 10 is greater than or equal to 1 degree and less than or equal to 45 degrees. Adjusting the distribution and angle of the flexible connectors 20 facilitates flexible installation and allows for the absorption of lateral energy, reducing lateral displacement of the battery housing 10.

[0099] When at least two flexible connectors 20 are located on opposite sides of the length direction of the battery housing 10, the connecting ends of the flexible connectors 20 can also be parallel to the width direction of the battery housing 10; when at least two flexible connectors 20 are located on opposite sides of the width direction of the battery housing 10, the connecting ends of the flexible connectors 20 can also be parallel to the length direction of the battery housing 10.

[0100] Among them, see Figure 19Multiple fixing points 11 located on one side of the battery casing 10 form at least two rows along the height direction of the battery casing 10, with flexible connectors correspondingly inserted within the fixing points 11 in the same row. Thus, at least two flexible connectors 20 are provided on one side of the battery casing 10, and the flexible connectors 20 on the same side form two or more rows along the height direction of the battery assembly, meaning the flexible connectors 20 on the same side have different heights to improve the stability of the battery assembly connection. For example, at least two flexible connectors 20 of different heights are distributed on one of the opposite sides along the length direction of the battery casing 10. Alternatively, at least two flexible connectors 20 of different heights are distributed on both opposite sides along the length direction of the battery casing 10.

[0101] In some possible implementations, the number of flexible connectors 20 is at least two, and the at least two flexible connectors 20 are distributed along the circumference and / or top surface of the battery housing 10; at least two fixing points 11 are provided on the outer circumferential surface and / or top surface of the battery housing 10, and one end of each flexible connector 20 is connected to a fixing point 11, and the other end is connected to the body to be connected.

[0102] See Figures 4 to 7 At least two flexible connectors 20 are suspended along the height of the battery housing 10 to block the transmission of vertical external forces and reduce damage to the battery assembly from bumps. The height direction of the battery housing 10 is the Z direction shown in the figure. The at least two flexible connectors 20 can be arranged opposite each other along the length direction of the battery housing 10, or opposite each other along the width direction of the battery housing 10, or can be arranged circumferentially around the battery housing 10, or located on the top surface of the battery housing 10, to flexibly install the battery assembly.

[0103] For example, the outer peripheral surface of the battery casing 10 includes four side surfaces connected end-to-end, each side surface having at least one fixing point 11. For instance, two fixing points 11 are provided on each of the two opposite sides along the length direction of the battery casing 10, and four fixing points 11 are provided on the two opposite sides along the width direction of the battery casing 10. Each of the at least two fixing points 11 is connected to one end of a flexible connector 20, and the other end of the flexible connector 20 is connected to the object to be connected. For example, each fixing point 11 is correspondingly connected to a flexible connector 20. One fixing point 11 can correspond to one or more flexible connectors 20, and the number of flexible connectors 20 is greater than or equal to 2 and less than or equal to 50.

[0104] As another example, the battery housing 10 has at least one fixing point 11 on each of two opposite sides along its length or width, and each fixing point 11 on each side is connected to one or more flexible connectors 20. Alternatively, the battery housing 10 has at least one fixing point 11 on each of two or three adjacent sides, and each fixing point 11 on each side is connected to one or more flexible connectors 20.

[0105] In other possible examples, the top surface (e.g., the central region) of the battery housing 10 is opposite to the component to be connected, which has a beam-like structure or other suitable load-bearing parts. The top surface of the battery housing 10 may also be provided with fixing points 11, and the flexible connector 20 may be connected accordingly. The fixing points 11 on the top surface of the battery housing 10 can be used as candidates or backups to improve the stability and reliability of the connection.

[0106] It is understandable that the top and sides of the battery housing 10 can be provided with fixing points 11 as needed, that is, the flexible connectors 20 adopt multiple multi-point distribution. For example, fixing points 11 are provided around the circumference of the battery housing 10, fixing points 11 are provided on the top surface of the battery housing 10, and the fixing points 11 on the top and sides of the battery housing 10 are all connected to the flexible connectors 20 to improve the stability of the battery housing 10.

[0107] The angle between the flexible connector 20 and the battery housing 10 in the height direction is greater than or equal to 0 degrees and less than or equal to 80 degrees. That is, the spatial angle between the flexible connector 20 and the battery housing 10 in the height direction is limited to between 0° and 80°, so as to flexibly adjust the position of the battery housing 10, adapt to complex road conditions, and improve the dynamic performance of the vehicle.

[0108] In some possible implementations, the number of flexible connections 20 is at least two, with at least two flexible connections 20 located on the bottom surface of the battery housing 10; the bottom surface of the battery housing 10 is provided with a plurality of fixing points 11, and flexible connections 20 are correspondingly inserted into at least two fixing points 11 arranged along the length and / or width direction of the battery housing 10. In this way, the flexible members can also support the battery housing 10, avoid direct contact between the battery housing 10 and adjacent structures, and reduce collisions.

[0109] See Figures 8 to 11 At least two flexible connectors 20 are mounted on the bottom of the battery housing 10. For example, at least two flexible connectors 20 are spaced apart along the length of the battery housing 10. Alternatively, at least two flexible connectors 20 are spaced apart along the width of the battery housing 10. Yet another example is that at least two flexible connectors 20 are spaced apart along both the length and width of the battery housing 10, forming an interlaced mesh structure.

[0110] To connect the flexible connector 20, the bottom surface of the battery housing 10 is provided with multiple fixing points 11. That is, the fixing points 11 and the flexible connector 20 are located at the bottom of the battery housing 10, and the flexible connector 20, used to constrain the battery housing 10, extends from these fixing points 11. For example, the multiple fixing points 11 are spaced apart along the length direction and also spaced apart along the width direction of the battery housing 10, i.e., the multiple fixing points 11 are arranged in a shaped array. At least two fixing points 11 in the same row are respectively fitted with the flexible connector 20.

[0111] For example, multiple fixing points 11 are formed in at least two rows along the length of the battery casing 10, wherein at least two fixing points 11 in each of the at least two rows are respectively fitted with flexible connectors 20. Alternatively, multiple fixing points 11 are formed in three rows along the length of the battery casing 10, with three fixing points 11 in each row, forming a 3x3 arrangement. Flexible connectors 20 are fitted through both rows of fixing points 11, and two or three fixing points 11 in each row are fitted with flexible connectors 20. Or, flexible connectors 20 are fitted through all three rows of fixing points 11, and two or three fixing points 11 in each row are fitted with flexible connectors 20.

[0112] For example, multiple fixing points 11 are arranged in at least two rows along the length of the battery casing 10 and at least two rows along the width of the battery casing 10, wherein at least two fixing points 11 in each of the at least two rows are respectively provided with flexible connectors 20. For example, multiple fixing points 11 are arranged in four rows along the length of the battery casing 10 and two rows along the width of the battery casing 10, that is, forming a 2-row, 3-column arrangement. In this arrangement, at least two rows of fixing points 11 are respectively provided with flexible connectors 20, or only two columns of fixing points 11 are respectively provided with flexible connectors 20, or at least one row of fixing points 11 is respectively provided with flexible connectors 20, or only one column of fixing points 11 is respectively provided with flexible connectors 20.

[0113] The at least two flexible connectors 20 include at least two first connectors and at least one second connector. The at least two first connectors are spaced apart along the width direction of the battery housing 10 and connected at both ends to the object to be connected. The second connector connects two adjacent first connectors. That is, at least two first connectors are arranged in the width direction of the battery housing 10, and at least one connector is arranged in the length direction of the battery assembly. For example, multiple first and second connectors are provided, forming a crisscrossing mesh structure. The number of first and second connectors is also less than or equal to 50 to simplify the battery assembly structure.

[0114] In this configuration, at least one first connector is inserted into at least two corresponding fixing points 11, and both ends of each first connector are connected to the body to be connected; and / or, the angle between the connecting end of the first connector and the length direction of the battery casing 10 is greater than or equal to 1 degree and less than or equal to 45 degrees. For example, there are four first connectors, with the first connectors on both sides inserted into two or more corresponding fixing points 11. By adjusting the distribution and angle of the flexible connectors 20, flexible installation is facilitated, and lateral energy can be absorbed, reducing the lateral displacement of the battery casing 10.

[0115] At least one second connector is provided, and each second connector can connect to an adjacent first connector. For example, each second connector is connected to all first connectors. Figure 4 As shown, there are four first connectors and six second connectors, with each second connector connecting four first connectors. The second connectors and first connectors can be connected by knotting or by a fixing device. The second connectors can be inserted into the corresponding fixing points 11 or not.

[0116] In some possible examples, both ends of the second connector are also connected to the body to be connected to increase the stability of the battery housing 10. When the second connector is connected to the body to be connected, the angle between the connecting end of the second connector and the width direction of the battery housing 10 is greater than or equal to 1 degree and less than or equal to 45 degrees to achieve flexible installation of the battery housing 10.

[0117] See some possible examples. Figures 12 to 15 At least two flexible connectors 20 also extend to the sides of the battery housing 10 to wrap around it. In this way, the flexible connectors 20 can support the battery housing 10, hold it in place, and improve its stability.

[0118] In this configuration, at least two flexible connectors 20 are spaced apart along the width direction of the battery housing 10; and / or, at least two flexible connectors 20 are spaced apart along the length direction of the battery housing 10; and / or, the angle between the outer end of the flexible connector 20 and the height direction of the battery housing 10 is greater than or equal to 0 degrees and less than or equal to 80 degrees. This allows for flexible arrangement of the flexible connectors 20 and improves the reliability of the battery assembly. The flexible connectors 20 can be U-shaped, and the number of flexible connectors 20 is greater than or equal to 2 and less than or equal to 50.

[0119] For example, at least two flexible connectors 20 are spaced apart along the width direction of the battery housing 10, located on the bottom surface of the battery housing 10, and extending to two opposite sides of the battery housing 10 along its length direction. The flexible connectors 20 are wound along the length direction of the battery housing 10. Alternatively, at least two flexible connectors 20 are spaced apart along the length direction of the battery housing 10, located on the bottom surface of the battery housing 10, and extending to two opposite sides of the battery housing 10 along its width direction. The flexible connectors 20 are wound along the width direction of the battery housing 10. Another example is that at least two flexible connectors 20 are spaced apart along the width direction of the battery housing 10 and also extend to two opposite sides of the battery housing 10 along its length direction. Furthermore, at least two flexible connectors 20 are spaced apart along the length direction of the battery housing 10 and also extend to two opposite sides of the battery housing 10 along its width direction. These flexible connectors 20 are staggered and wound together along the outer peripheral surface of the battery housing 10.

[0120] To connect the flexible connectors 20, the bottom surface and / or sides of the battery housing 10 are provided with multiple fixing points 11, for example, fixing points 11 are provided on both the bottom and sides of the battery housing 10. The angle between the connecting end of the flexible connector 20 and the height direction of the battery housing 10 is greater than or equal to 0° and less than or equal to 89°. The angle between the flexible connectors 20 spaced apart along the width direction of the battery housing 10 and the length direction of the battery housing 10 is greater than or equal to 1° and less than or equal to 45°; and / or the angle between the flexible connectors 20 spaced apart along the length direction of the battery housing 10 and the width direction of the battery housing 10 is greater than or equal to 1° and less than or equal to 45°, so as to flexibly hoist the battery housing 10.

[0121] In some possible implementations, a connecting portion is provided on the side of the body to be connected; at least two fixing points 11 are provided on at least one of the opposite sides of the battery housing 10 along its length direction, and the flexible connector 20 on that side sequentially connects the corresponding at least two fixing points 11 and the connecting portion along the width direction of the battery housing 10; and / or, at least two fixing points 11 are provided on at least one of the opposite sides of the battery housing 10 along its width direction, and the flexible connector 20 on that side sequentially connects the corresponding at least two fixing points 11 and the connecting portion along the length direction of the battery housing 10.

[0122] See Figures 16 to 18Flexible connectors 20 are installed on the side of the battery housing 10 and interspersed within the mounting portions on the side of the object to be connected, forming a serpentine winding arrangement. Each flexible connector 20 sequentially and continuously passes through or is attached to the fixing point 11 on the side of the battery assembly and the mounting portion on the side of the object to be connected, forming a meandering, serpentine path to achieve multi-point constraint on the battery housing 10. Both ends of the flexible connector 20 can be fixed to the fixing point 11 and / or the object to be connected; for example, both ends of the flexible connector 20 can be connected to the fixing point 11, or one end of the flexible connector 20 can be connected to the fixing point 11 and the other end to the object to be connected. The number of the aforementioned flexible connectors 20 is greater than or equal to 2 and less than or equal to 50.

[0123] For example, at least two flexible connectors 20 are arranged in pairs along the length direction of the battery housing 10, that is, flexible connectors 20 are distributed on opposite sides of the battery housing 10 along its length direction, and at least one flexible connector 20 is sequentially connected to the corresponding fixing point 11 and mounting portion along the width direction of the battery housing 10. For example, the flexible connectors 20 on opposite sides of the battery housing 10 along its length direction are sequentially inserted into the fixing point 11 and mounting portion on the corresponding side.

[0124] As another example, at least two flexible connectors 20 are arranged in pairs along the width direction of the battery housing 10, that is, flexible connectors 20 are distributed on opposite sides of the battery housing 10 in the width direction, and at least one flexible connector 20 is sequentially connected to the corresponding fixing point 11 and mounting part along the length direction of the battery housing 10. For example, the flexible connectors 20 on opposite sides of the battery housing 10 in the width direction are sequentially inserted or hung in the fixing point 11 and mounting part on the corresponding side.

[0125] As another example, at least two flexible connectors 20 are arranged in pairs along the length direction of the battery housing 10, and at least one flexible connector 20 is sequentially connected to the corresponding fixing point 11 and mounting portion along the width direction of the battery housing 10. Furthermore, at least two flexible connectors 20 are arranged in pairs along the width direction of the battery housing 10, and at least one flexible connector 20 is sequentially connected to the corresponding fixing point 11 and mounting portion along the length direction of the battery housing 10. For example, the flexible connectors 20 on opposite sides along the length direction of the battery housing 10 are sequentially inserted or hung in the corresponding fixing point 11 and mounting portion, and the flexible connectors 20 on opposite sides along the width direction of the battery housing 10 are sequentially inserted in the corresponding fixing point 11 and mounting portion.

[0126] To connect the flexible connector 20, at least two fixing points 11 are provided on at least one of the opposite sides of the battery housing 10 along its length direction. A mounting portion is also distributed on this side, and the mounting portion and the fixing points 11 are arranged sequentially along the width direction of the battery housing 10. Alternatively, at least two fixing points 11 are provided on at least one of the opposite sides of the battery housing 10 along its width direction, and a mounting portion is also distributed on this side. The mounting portion and the fixing points 11 are arranged sequentially along the length direction of the battery housing 10. The mounting portions and fixing points 11 on the same side of the battery housing 10 may be positioned differently along the height direction of the battery housing 10, while the fixing points 11 on the same side of the battery housing 10 may be positioned the same along the height direction of the battery housing 10.

[0127] The battery assembly provided in this application includes a battery housing 10 and a flexible connector 20. The battery housing 10 is provided with at least one fixing point 11. The flexible connector 20 is connected to the fixing point 11 and to the object to be connected, thereby connecting the battery housing 10 to the object. By utilizing the tensile deformation or the characteristic of only transmitting tensile force of the flexible connector 20, the energy of external force is absorbed, preventing the external force from being directly transmitted to the battery housing 10, thus achieving buffer protection, significantly reducing mechanical damage to the battery housing 10 and its internal components caused by external forces, and extending its service life.

[0128] The embodiments or implementation methods described in this specification are presented in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. In this specification, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with an embodiment or example that are 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 can be combined in any suitable manner in one or more embodiments or examples.

[0129] It should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection via an intermediate medium, or the internal connection or interaction between two components. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this application based on the specific circumstances. The terms "first," "second," "third," etc. (if present) are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0130] In this specification, all directional indicators (e.g., up, down, left, right, forward, backward, etc.) in the various embodiments are only used to explain the relative positional and kinematic relationships between components in a specific posture (as shown in the attached figures). If the specific posture changes, the directional indicators will also change accordingly. The meaning of "and / or" in this specification includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B.

[0131] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A battery assembly, characterized in that, include: Battery housing (10), wherein the battery housing (10) is provided with at least one fixing point (11). A flexible connector (20) is connected to the fixed point (11) and configured to connect to the body to be connected, so as to connect the battery housing (10) to the body to be connected.

2. The battery assembly according to claim 1, characterized in that, The battery casing (10) is provided with at least two fixing points (11). The flexible connector (20) is connected to the at least two fixed points (11).

3. The battery assembly according to claim 2, characterized in that, The number of the flexible connectors (20) is at least two, and the at least two flexible connectors (20) are respectively located on opposite sides of the battery casing (10) in the length direction; The battery casing (10) has at least two fixing points (11) respectively on its opposite sides along its length direction. The flexible connector (20) is inserted through the at least two fixing points (11) on each side. The two ends of the flexible connector (20) are connected to the body to be connected. And / or, At least two of the flexible connectors (20) are located on opposite sides of the battery housing (10) in the width direction; The battery casing (10) has at least two fixing points (11) on each of its two opposite sides along its width direction. The flexible connector (20) is inserted through each of the at least two fixing points (11) on each side. The two ends of the flexible connector (20) are connected to the body to be connected.

4. The battery assembly according to claim 3, characterized in that, A plurality of fixing points (11) located on one side of the battery housing (10) are arranged in at least two rows along the height direction of the battery housing (10), and the flexible connector (20) is correspondingly inserted into the fixing points (11) in the same row; and / or, When at least two of the flexible connectors (20) are located on opposite sides of the length direction of the battery housing (10), the angle between the connecting end of the flexible connector (20) and the width direction of the battery housing (10) is greater than or equal to 1 degree and less than or equal to 45 degrees. When at least two of the flexible connectors (20) are located on opposite sides of the width direction of the battery housing (10), the angle between the connecting end of the flexible connector (20) and the length direction of the battery housing (10) is greater than or equal to 1 degree and less than or equal to 45 degrees.

5. The battery assembly according to claim 2, characterized in that, The number of the flexible connectors (20) is at least two, and the at least two flexible connectors (20) are distributed circumferentially and / or on the top surface of the battery casing (10); The outer peripheral surface and / or top surface of the battery housing (10) are provided with at least two fixing points (11), one end of each flexible connector (20) is connected to one of the fixing points (11), and the other end is connected to the body to be connected.

6. The battery assembly according to claim 5, characterized in that, The angle between the flexible connector (20) and the battery casing (10) in the height direction is greater than or equal to 0 degrees and less than or equal to 80 degrees.

7. The battery assembly according to claim 2, characterized in that, The number of the flexible connectors (20) is at least two, and at least two of the flexible connectors (20) are located on the bottom surface of the battery casing (10); The bottom surface of the battery housing (10) is provided with a plurality of fixing points (11), and the flexible connector (20) is correspondingly inserted into at least two of the fixing points (11) arranged along the length direction and / or width direction of the battery housing (10).

8. The battery assembly according to claim 7, characterized in that, At least two of the flexible connectors (20) include at least two first connectors and at least one second connector; The at least two first connectors are arranged at intervals along the width direction of the battery casing (10) and their two ends are connected to the body to be connected. The second connector connects two adjacent first connectors.

9. The battery assembly according to claim 8, characterized in that, At least one of the first connectors passes through at least two corresponding fixing points (11); and / or, The angle between the connecting end of the first connector and the length direction of the battery casing (10) is greater than or equal to 1 degree and less than or equal to 45 degrees; and / or, The two ends of the second connector are also connected to the body to be connected.

10. The battery assembly according to claim 9, characterized in that, When the second connector is connected to the body to be connected, the angle between the connecting end of the second connector and the width direction of the battery casing (10) is greater than or equal to 1 degree and less than or equal to 45 degrees.

11. The battery assembly according to claim 7, characterized in that, At least two of the flexible connectors (20) also extend to the side of the battery housing (10) to wrap around the battery housing (10).

12. The battery assembly according to claim 11, characterized in that, At least two of the flexible connectors (20) are spaced apart along the width direction of the battery housing (10); and / or, At least two of the flexible connectors (20) are spaced apart along the length of the battery casing (10); and / or, The angle between the outer end of the flexible connector (20) and the height direction of the battery casing (10) is greater than or equal to 0 degrees and less than or equal to 80 degrees.

13. The battery assembly according to claim 2, characterized in that, The body to be connected is provided with a connecting part; The battery casing (10) has at least two fixing points (11) on at least one of its opposite sides along its length direction. The flexible connector (20) on that side sequentially connects the corresponding at least two fixing points (11) along the width direction of the battery casing (10) and connects to the connecting portion; and / or, The battery housing (10) has at least two fixing points (11) on at least one of its opposite sides along its width direction. The flexible connector (20) on that side sequentially connects the corresponding at least two fixing points (11) along the length direction of the battery housing (10) and connects to the connecting part.

14. The battery assembly according to any one of claims 1-13, characterized in that, The flexible connector (20) includes ropes and / or chains; and / or, The flexible connector (20) has a length greater than or equal to 1 meter and less than or equal to 20 meters; and / or, The yield strength of the flexible connector (20) is greater than or equal to 10 MPa and less than or equal to 2000 MPa; and / or, The tensile strength of the flexible connector (20) is greater than or equal to 10 MPa and less than or equal to 2000 MPa; and / or, The elastic modulus of the flexible connector (20) is greater than or equal to 100,000 MPa and less than or equal to 1,000,000 MPa; and / or, The tensile elongation at break of the flexible connector (20) is greater than or equal to 1% and less than or equal to 80%; and / or, The battery assembly also includes a damping structure disposed between the battery housing (10) and the body to be connected.

15. An electrical appliance, characterized in that, include: The object to be connected; The battery assembly as described in any one of claims 1-14 is connected to the body to be connected via a flexible connector (20).

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