Multi-directional quasi-zero stiffness synchronous vibration reduction and energy collection bracket for power batteries

Abstract

The present invention relates to a multi-directional quasi-zero stiffness synchronous vibration reduction and energy collection bracket for power batteries, comprising: a bracket body, a horizontal quasi-zero stiffness structure and a vertical quasi-zero stiffness structure, a three-directional vibration absorption structure installed on the power battery, and an energy recovery structure connected to the three-directional vibration absorption structure; the horizontal quasi-zero stiffness structure is regularly arranged along the circumference of the bracket body to provide vibration reduction support for the power battery in the horizontal direction; the vertical quasi-zero stiffness structure provides vibration reduction support for the power battery in the vertical direction; the three-directional vibration absorption structure is installed on the upper side of the power battery in the vertical direction to absorb the vibration energy of the power battery; the energy recovery structure is used to convert the vibration energy absorbed by the three-directional vibration absorption structure into electrical energy and output it. This solution can not only suppress the low-frequency vibration of the power battery in three directions but also achieve a large load-bearing effect; it can also reduce the restrictive relationship between vibration reduction and energy collection, and achieve efficient low-frequency vibration energy conversion.

Description

Technical Field

[0001] The present invention relates to the field of electromagnetic vibration control and synchronous power generation, and in particular to a multi-directional quasi-zero stiffness synchronous vibration reduction and energy collection bracket for a power battery. Background Art

[0002] As one of the three core components of new energy vehicles, power batteries currently primarily utilize lithium-ion batteries. Safety and range are two major industry pain points. While the location of power batteries varies by vehicle (including the center chassis, under the trunk, and under the rear seats), during the operation of new energy vehicles, continuous vibrations from the road surface, wind resistance, and the motor are inevitably transmitted to the power battery pack through the mechanical structure, subjecting the battery to vibrations in three directions: left-right, front-back, and vertical. For lithium-ion batteries, the resulting compression and collisions from these three directions pose three major hazards: first, vibration can cause mechanical damage to internal battery components, leading to cracks or even detachment; second, vibration can alter the distance between the electrolyte and electrodes, reducing battery life; and third, vibration-induced internal short circuits can directly trigger thermal runaway, leading to fires. Therefore, vibration is a core factor exacerbating these two major pain points for power batteries, necessitating an urgent need to reduce the three-dimensional vibration to which power batteries are subjected during vehicle operation.

[0003] Currently, two main approaches are used to reduce vibration in power batteries: one is to fill the gap between the battery pack and the chassis with damping materials such as rubber gaskets, and the other is to add vibration isolation brackets between the battery pack and the chassis. These vibration reduction methods are effective in protecting the structural integrity of the battery pack, maintaining battery performance stability, and extending battery life. However, they still have the following significant shortcomings: 1) The vibration reduction frequency band is often fixed and effective for high-frequency vibrations, while the vibration reduction effect in the low-frequency range (below 10Hz) is poor; 2) The vibration reduction mechanism in all cases converts vibration energy into heat and dissipates it, which increases the threat of thermal runaway in the power battery and results in significant energy waste. If the vibration energy exerted on the power battery could be collected and converted into electrical energy, it would not only suppress the vibration of the power battery, but also charge the power battery and improve its battery life. Therefore, there is a pressing need for simultaneous vibration reduction and energy harvesting in power batteries.

[0004] The simultaneous vibration reduction and energy harvesting of power batteries mainly face the following challenges: 1) Power batteries are subject to vibration in three directions: left-right, front-back, and vertical. Existing structures often only target vibration in a single direction; 2) Existing vibration reduction structures are mostly based on linear vibration mechanisms and have difficulty suppressing low-frequency vibrations; 3) The power battery pack itself is heavy and the installation space is compact, and the load-bearing capacity of existing vibration reduction structures is limited; 4) Vibration reduction and energy harvesting in existing structures restrict each other, resulting in low efficiency in vibration energy harvesting. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a multi-directional quasi-zero stiffness synchronous vibration reduction and energy collection bracket for a power battery.

[0006] To achieve the above-mentioned object, the present invention provides a multi-directional quasi-zero stiffness synchronous vibration reduction and energy collection bracket for a power battery, comprising: a bracket body, a horizontal quasi-zero stiffness structure and a vertical quasi-zero stiffness structure provided on the bracket body for connecting to the power battery, a three-directional vibration absorption structure for installation on the power battery, and an energy recovery structure connected to the three-directional vibration absorption structure;

[0007] The horizontal quasi-zero stiffness structure is regularly arranged along the circumference of the bracket body to provide vibration reduction support for the power battery in the horizontal direction;

[0008] The vertical quasi-zero stiffness structure provides vibration reduction support for the power battery in the vertical direction;

[0009] The three-way vibration absorbing structure is installed on the upper side of the power battery in the vertical direction to absorb the vibration energy of the power battery;

[0010] The energy recovery structure is used to convert the vibration energy absorbed by the three-way vibration absorbing structure into electrical energy and output it.

[0011] According to one aspect of the present invention, the horizontal quasi-zero stiffness structure comprises: four groups of horizontal quasi-zero stiffness modules;

[0012] The static stiffness of each group of horizontal quasi-zero stiffness modules in the horizontal direction is 0;

[0013] Along the circumference of the bracket body, the four groups of horizontal quasi-zero stiffness modules are regularly arranged at intervals;

[0014] The horizontal quasi-zero stiffness module includes: a first horizontal magnet assembly, a second horizontal magnet assembly, an upper spring and a lower spring;

[0015] The first horizontal magnet assembly and the second horizontal magnet assembly are spaced apart; wherein the first horizontal magnet assembly is used to connect with the side wall of the power battery, and the second horizontal magnet assembly is connected with the side wall of the bracket body;

[0016] The first horizontal magnet assembly and the second horizontal magnet assembly are respectively rectangular Halbach arrays;

[0017] The opposite ends of the upper spring are respectively connected to the upper side of the edge of the power battery and the upper side of the bracket body;

[0018] The opposite ends of the lower spring are respectively connected to the lower side of the edge of the power battery and the lower side of the bracket body;

[0019] In the horizontal direction, the magnetic force between the first horizontal magnet assembly and the second horizontal magnet assembly is a repulsive force.

[0020] According to one aspect of the present invention, the vertical quasi-zero stiffness structure comprises: a vertical quasi-zero stiffness module;

[0021] The vertical quasi-zero stiffness module has a static stiffness of 0 in the vertical direction;

[0022] The vertical quasi-zero stiffness module includes: a first annular Halbach magnet assembly, a second annular Halbach magnet assembly and a first linear spring;

[0023] The first annular Halbach magnet assembly is connected to the power battery;

[0024] The second annular Halbach magnet assembly is connected to the bottom surface of the bracket body;

[0025] The upper and lower ends of the first linear spring are respectively connected to the lower side of the power battery and the bottom surface of the bracket body;

[0026] The first annular Halbach magnet assembly and the second annular Halbach magnet assembly are coaxially arranged.

[0027] According to one aspect of the present invention, the first annular Halbach magnet assembly includes: a plurality of first magnetic rings;

[0028] The plurality of first magnetic rings are coaxially arranged in the same plane, and adjacent first magnetic rings are spaced apart from each other;

[0029] The second annular Halbach magnet assembly includes: a plurality of second magnetic rings;

[0030] A plurality of the second magnetic rings are coaxially arranged in the same plane, and adjacent second magnetic rings are spaced apart from each other.

[0031] According to one aspect of the present invention, the first magnetic ring and the second magnetic ring are staggered;

[0032] The interval between adjacent first magnetic rings is greater than the radial width of the second magnetic ring;

[0033] The interval between adjacent second magnetic rings is greater than the radial width of the first magnetic ring.

[0034] According to one aspect of the present invention, the first magnetic ring has at least one first ring body;

[0035] If the first magnetic ring has a plurality of first ring bodies, the plurality of first ring bodies are coaxially connected and nested with each other;

[0036] The second magnetic ring has at least one second ring body;

[0037] If the second magnetic ring has a plurality of second ring bodies, the plurality of second ring bodies are nested with each other and coaxially connected.

[0038] According to one aspect of the present invention, the upper end of the first linear spring is nested with the inner side / outer side of the first magnetic ring and the upper end surface of the first linear spring is fixedly connected to the lower side of the power battery, and the lower end of the first linear spring is nested with the outer side / inner side of the second magnetic ring and the lower end surface of the first linear spring is fixedly connected to the bottom surface of the bracket body.

[0039] According to one aspect of the present invention, the first horizontal magnet assembly includes: an odd number of first rectangular magnets, and the plurality of first rectangular magnets are arranged in a sequentially connected arrangement along the side wall of the power battery;

[0040] In the first horizontal magnet assembly, magnetization directions of adjacent first rectangular magnets are opposite, and the magnetization direction of the first rectangular magnet in the middle position is arranged in a direction toward the second horizontal magnet assembly;

[0041] The second horizontal magnet assembly includes: an odd number of second rectangular magnets, and the plurality of second rectangular magnets are arranged in a sequentially connected manner along the side wall of the bracket body;

[0042] In the second horizontal magnet assembly, the magnetization directions of adjacent second rectangular magnets are opposite, and the magnetization direction of the second rectangular magnet in the middle position is arranged in a direction toward the first horizontal magnet assembly;

[0043] An odd number of the first magnetic rings is provided in the first annular Halbach magnet assembly, an odd number of the second magnetic rings is provided in the second annular Halbach magnet assembly, and the number of the first magnetic rings is the same as the number of the second magnetic rings;

[0044] The first magnetic ring is a three-layer stacked structure;

[0045] Along the radial direction of the first annular Halbach magnet assembly, the innermost first magnetic ring has a first ring body, wherein the magnetization direction of each layer in the first ring body changes counterclockwise by 90 degrees from top to bottom, and the magnetization direction of the middle layer is radially inward;

[0046] Along the radial direction of the first annular Halbach magnet assembly, the first magnetic ring at the remaining position has two first ring bodies, wherein the magnetization direction of each layer in the first ring body on the inner side of the first magnetic ring changes clockwise by 90° from top to bottom, and the magnetization direction of the middle layer is radially outward; the magnetization direction of each layer in the first ring body on the outer side of the first magnetic ring changes counterclockwise by 90° from top to bottom, and the magnetization direction of the middle layer is radially inward;

[0047] The second magnetic ring has a five-layer stacked structure;

[0048] Along the radial direction of the second annular Halbach magnet assembly, the outermost second magnetic ring has a second ring body, wherein the magnetization direction of each layer in the second ring body changes clockwise by 90 degrees from top to bottom, and the magnetization direction of the middle layer is radially outward;

[0049] Along the radial direction of the second annular Halbach magnet assembly, the second magnetic ring at the remaining position has two second ring bodies, wherein the magnetization direction of each layer in the second ring body on the inner side of the second magnetic ring changes clockwise by 90° from top to bottom, and the magnetization direction of the middle layer is radially outward, and the magnetization direction of each layer in the second ring body on the outer side of the second magnetic ring changes counterclockwise by 90° from top to bottom, and the magnetization direction of the middle layer is radially inward.

[0050] According to one aspect of the present invention, the three-way vibration absorbing structure is arranged in a spatially orthogonal symmetric layout, and comprises: a vibration absorbing structure shell, a vibrator disposed in the vibration absorbing structure shell, and a third linear spring for connecting the vibration absorbing structure shell and the vibrator;

[0051] The vibration absorbing structure shell is a hollow shell with a regular structure;

[0052] In the vertical direction, a third magnetic ring is connected to the inner walls of the upper and lower ends of the vibration absorbing structure shell;

[0053] The third magnetic ring has at least one third ring body, wherein if there are multiple third ring bodies, the multiple third ring bodies are coaxially stacked;

[0054] A hollow annular connecting piece is provided in the middle of the inner side wall of the vibration absorbing structure shell in the vertical direction;

[0055] A fourth magnetic ring is provided in the annular connecting member;

[0056] The vibrator has a regular structure and includes: a hollow vibrator shell, a fifth magnetic ring and a sixth magnetic ring coaxially arranged in the vibrator shell;

[0057] In the vertical direction, the fifth magnetic ring is symmetrically arranged on two opposite sides of the sixth magnetic ring;

[0058] The fifth magnetic ring has at least one fifth ring body, wherein if there are multiple fifth ring bodies, the multiple fifth ring bodies are coaxially stacked;

[0059] The axial thickness of the sixth magnetic ring is consistent with the axial thickness of the fourth magnetic ring;

[0060] Along the radial direction of the vibrator housing, one end of the third linear spring is connected to the vibrator housing, and the other end of the third linear spring is connected to the annular connecting member;

[0061] Along the circumference of the vibrator housing, four third linear springs are arranged at equal angles;

[0062] Along the vertical direction, the third linear spring, the third magnetic ring, and the fifth magnetic ring form a cubic nonlinear stiffness;

[0063] Along the horizontal direction, the third linear spring, the fourth magnetic ring, and the sixth magnetic ring form quasi-zero stiffness.

[0064] According to one aspect of the present invention, the energy recovery structure includes: a coil and an electric energy conversion interface circuit connected to the coil;

[0065] The coil is wound on the vibration absorbing structure shell;

[0066] The power conversion interface circuit is installed on the bracket body;

[0067] The electric energy conversion interface circuit adopts a bridge rectifier circuit.

[0068] According to one embodiment of the present invention, a multi-directional, quasi-zero-stiffness, synchronous vibration reduction and energy harvesting bracket for a power battery achieves effective vibration reduction in the fore-aft, lateral, and vertical directions. This bracket can handle low-frequency vibrations while maintaining high load capacity in various directions. Furthermore, this solution efficiently converts vibration energy experienced by the power battery into electrical energy, significantly reducing the constraints between vibration reduction and energy harvesting.

[0069] According to a solution of the present invention, this solution adopts two groups of horizontal quasi-zero stiffness modules (a combination structure of linear spring + magnetic spring) in the horizontal direction and arranges them orthogonally symmetrically. It generates negative stiffness based on the first horizontal magnet assembly and the second horizontal magnet assembly, while the upper spring and the lower spring can generate positive stiffness, so that the quasi-zero stiffness effect is fully realized in the horizontal direction; in the vertical direction, the first annular Halbach magnet assembly, the second annular Halbach magnet assembly and the first linear spring combination are used to realize the effect of spiral spring + coaxial nested Halbach magnetic spring, fully realizing the quasi-zero stiffness effect in the vertical direction.

[0070] According to one solution of the present invention, the vibrator in the three-way vibration absorption structure of this solution integrates a ring-shaped Halbach array to enhance the internal magnetic field strength, thereby conveniently and efficiently converting vibration energy into electrical energy.

[0071] According to one solution of the present invention, this solution can fully utilize the cubic nonlinear stiffness formed by the magnetic force and spring force in the vertical direction to achieve strong nonlinearity in different directions. The linear terms are eliminated through the optimization and matching design of structural parameters, so that the vibration of the power battery is transmitted to the Halbach array in the three-dimensional vibration absorption structure as much as possible, thereby enhancing the relative movement between the Halbach array and the coil. Finally, the interface circuit is used to convert as much collected energy as possible into electrical energy for storage.

[0072] According to a solution of the present invention, the horizontal quasi-zero stiffness structure and the vertical quasi-zero stiffness structure of this solution constitute a three-directional quasi-zero stiffness unit with a spatially orthogonal symmetrical layout, and combined with a three-directional vibration absorption structure with a spatially orthogonal symmetrical layout, the vibration coupling in the x, y and z directions is fully reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0073] Figure 1 This is a structural diagram of a multi-directional quasi-zero stiffness synchronous vibration reduction and energy collection bracket for a power battery according to one embodiment of the present invention;

[0074] Figure 2 This is a cross-sectional view of a multi-directional quasi-zero stiffness synchronous vibration reduction and energy collection bracket for a power battery according to one embodiment of the present invention;

[0075] Figure 3 FIG1 is a magnetization direction arrangement diagram of a first horizontal magnet assembly and a second horizontal magnet assembly according to an embodiment of the present invention;

[0076] Figure 4 This is a structural diagram of a vertical quasi-zero stiffness module according to an embodiment of the present invention;

[0077] Figure 5 FIG1 is a magnetization direction arrangement diagram of a first annular Halbach magnet assembly and a second annular Halbach magnet assembly according to an embodiment of the present invention;

[0078] Figure 6 is a cross-sectional view of a three-way vibration absorbing structure according to an embodiment of the present invention;

[0079] Figure 7 This is a diagram showing the arrangement of magnetization directions in a three-way vibration absorption structure according to an embodiment of the present invention.

[0080] In the figure, 1- bracket body, 2- horizontal quasi-zero stiffness structure, 3- vertical quasi-zero stiffness structure, 4- three-way vibration absorption structure, 5- energy recovery structure, 21- horizontal quasi-zero stiffness module, 211- first horizontal magnet assembly, 212- second horizontal magnet assembly, 213- upper spring, 214- lower spring, 31- vertical quasi-zero stiffness module, 311- first annular Halbach magnet assembly, 312- second annular Halbach magnet assembly, 313- first linear Linear spring, 311a-first magnetic ring, 312a-second magnetic ring, 311a1-first ring body, 312a1-second ring body, 41-vibration absorption structure shell, 42-oscillator, 43-third linear spring, 411-third magnetic ring, 411a-third ring body, 412-annular connector, 412a-fourth magnetic ring, 421-oscillator shell, 422-fifth magnetic ring, 423-sixth magnetic ring, 422a-fifth ring body, 51-coil, 52-electric energy conversion interface circuit. DETAILED DESCRIPTION

[0081] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be derived from these drawings without inventive effort.

[0082] When describing the embodiments of the present invention, the orientation or positional relationship expressed by the terms "longitudinal", "transverse", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or positional relationship shown in the relevant drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms should not be understood as limiting the present invention.

[0083] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiments cannot be described one by one here, but the embodiments of the present invention are not limited to the following embodiments.

[0084] like Figure 1As shown, according to one embodiment of the present invention, a multi-directional quasi-zero stiffness synchronous vibration reduction and energy collection bracket for a power battery of the present invention includes: a bracket body 1, a horizontal quasi-zero stiffness structure 2 and a vertical quasi-zero stiffness structure 3 provided on the bracket body 1 for connecting to the power battery, a three-directional vibration absorption structure 4 for installation on the power battery, and an energy recovery structure 5 connected to the three-directional vibration absorption structure 4; in this embodiment, the bracket body 1 can be configured as a frame structure or as a hollow shell structure. For the power battery, the bracket body 1 preferably adopts a hollow shell structure to achieve the covering of the power battery, thereby achieving the vibration reduction effect of the power battery inside the bracket body 1.

[0085] In this embodiment, the horizontal quasi-zero stiffness structure 2 is regularly arranged along the circumference of the bracket body 1 to provide vibration reduction support for the power battery in the horizontal direction; the vertical quasi-zero stiffness structure 3 provides vibration reduction support for the power battery in the vertical direction; and the three-way vibration absorption structure 4 is installed on the upper side of the power battery in the vertical direction to absorb the vibration energy of the power battery.

[0086] In this embodiment, the energy recovery structure 5 is used to convert the vibration energy absorbed by the three-way vibration absorbing structure 4 into electrical energy and output it.

[0087] Through the above-mentioned arrangement, the present solution effectively suppresses the vibration of the power battery in three directions by arranging a horizontal quasi-zero stiffness structure 2 and a vertical quasi-zero stiffness structure 3 around the power battery, which can not only handle low-frequency vibrations but also achieve a large load-bearing capacity; in addition, by further arranging a three-directional vibration absorbing structure 4 and installing it on the power battery, the three-directional vibration absorbing structure 4 can adaptively absorb vibrations along with the power battery, so as to further fully suppress the parts that are not completely eliminated by the horizontal quasi-zero stiffness structure 2 and the vertical quasi-zero stiffness structure 3, thereby fully improving the ability of the present solution to suppress vibrations in a wide frequency range.

[0088] In addition, by providing an energy recovery structure 5 and installing the energy recovery structure 5 on the three-way vibration absorption structure 4, the three-way vibration absorption structure 4 can further convert the absorbed vibration energy into electrical energy in the energy recovery structure 5 during the process of adaptive vibration absorption following the power battery, so that the vibration energy is converted with high efficiency, which greatly reduces the constraint relationship between vibration reduction and energy collection.

[0089] Combine Figure 1 and Figure 2As shown, according to one embodiment of the present invention, the horizontal quasi-zero stiffness structure 2 includes: four groups of horizontal quasi-zero stiffness modules 21; wherein, along the circumference of the bracket body 1, the four groups of horizontal quasi-zero stiffness modules 21 are regularly arranged at intervals; specifically, the power battery can be set as a rectangular body, thereby, along the length direction of the power battery, two groups of horizontal quasi-zero stiffness modules 21 are symmetrically arranged, and along the width direction of the power battery, two groups of horizontal quasi-zero stiffness modules 21 are symmetrically arranged, thereby achieving regular arrangement of the horizontal quasi-zero stiffness modules 21, thereby achieving stable and reliable support for the power battery.

[0090] In this embodiment, the static stiffness of each horizontal quasi-zero stiffness module 21 in the horizontal direction is zero. Thus, the horizontal quasi-zero stiffness module 21 includes: a first horizontal magnet assembly 211, a second horizontal magnet assembly 212, an upper spring 213, and a lower spring 214. The first horizontal magnet assembly 211 and the second horizontal magnet assembly 212 are parallel and spaced apart. Thus, the first horizontal magnet assembly 211 is used to connect to the side wall of the power battery, and the second horizontal magnet assembly 212 is connected to the side wall of the bracket body 1. In this embodiment, the first horizontal magnet assembly 211 and the second horizontal magnet assembly 212 are each a block-shaped Halbach array.

[0091] In this embodiment, the horizontal magnetic force between the first horizontal magnet assembly 211 and the second horizontal magnet assembly 212 behaves as a repulsive force, thereby fully avoiding collision between the power battery and the bracket body 1, which is more beneficial to ensuring the safety and reliability of the power battery.

[0092] In this embodiment, the upper spring 213 is a compression spring, and its opposite ends are connected to the upper edge of the power battery and the upper side of the bracket body 1, respectively. Furthermore, to ensure accurate and reliable installation, the upper spring 213 is connected to the middle position of the upper edge of the power battery. As a result, the four upper springs 213 on the upper side of the power battery can be symmetrically distributed, thereby providing a more balanced support force on the power battery. To match the installation method of the upper spring 213, the opposite ends of the lower spring 214 are connected to the lower edge of the power battery and the lower side of the bracket body 1, respectively. To ensure accurate and reliable installation, the lower spring 214 is connected to the middle position of the lower edge of the power battery. As a result, the four lower springs 214 on the lower side of the power battery can be symmetrically distributed, thereby providing a more balanced support force on the power battery.

[0093] In this embodiment, the upper spring 213 and the lower spring 214 are coaxially arranged and arranged close to the edge of the power battery. Therefore, based on the interaction between the upper spring 213 and the lower spring 214, it can effectively ensure the balanced support of the power battery and effectively suppress the vibration and tilt of the power battery, especially for eliminating the collision between the edge of the power battery and the side wall of the bracket body 1.

[0094] like Figure 3 As shown, according to one embodiment of the present invention, in a stationary state and along the vertical direction, the vertical center positions of the first horizontal magnet assembly 211 and the second horizontal magnet assembly 212 coincide with the vertical center plane of the power battery, thereby fully ensuring the support balance performance of this solution. In this embodiment, the height of the second horizontal magnet assembly 212 in the vertical direction is consistent with the thickness of the power battery in the vertical direction, and the height of the first horizontal magnet assembly 211 in the vertical direction is less than the height of the second horizontal magnet assembly 212 in the vertical direction. Thus, the operating range of the power battery can be fully covered in the vertical direction, thereby enabling the power battery to have sufficient support in the vertical direction, which is more beneficial to ensuring the support reliability of the present invention.

[0095] In this embodiment, the first horizontal magnet assembly 211 includes: an odd number of first rectangular magnets, and the plurality of first rectangular magnets are arranged in a sequentially connected arrangement along the side wall of the power battery; for example, there are five first rectangular magnets, and thus, they can be arranged in a sequentially connected arrangement along the extension direction of the side wall of the power battery, thereby ensuring the compactness of the overall structure of the first horizontal magnet assembly 211. Of course, in other settings, the first rectangular magnets can also be set to other numbers, to be determined according to the parameters of the power battery to which they are connected. Furthermore, in the first horizontal magnet assembly 211, the magnetization directions of adjacent first rectangular magnets are opposite, and the magnetization direction of the first rectangular magnet in the middle position is set in the direction toward the second horizontal magnet assembly 212;

[0096] In this embodiment, the second horizontal magnet assembly 212 includes: an odd number of second rectangular magnets, and the plurality of second rectangular magnets are arranged in a sequentially connected arrangement along the side wall of the bracket body 1; for example, there are five second rectangular magnets, which can be arranged in a sequentially connected arrangement along the extension direction of the side wall of the bracket body 1, thereby ensuring the compactness of the overall structure of the second horizontal magnet assembly 212. Of course, in other settings, the second rectangular magnets can also be set to other numbers, to be determined according to the parameters of the power battery to which they are connected. Furthermore, in the second horizontal magnet assembly 212, the magnetization directions of adjacent second rectangular magnets are opposite, and the magnetization direction of the second rectangular magnet in the middle position is set in the direction toward the first horizontal magnet assembly 211.

[0097] Through the above-mentioned setting, the magnetization directions in the first horizontal magnet assembly 211 and the second horizontal magnet assembly 212 are arranged symmetrically. Therefore, while ensuring the repulsive force between the first horizontal magnet assembly 211 and the second horizontal magnet assembly 212, the centering restriction of the first horizontal magnet assembly 211 and the second horizontal magnet assembly 212 in the horizontal direction can be effectively guaranteed, so as to effectively ensure the support stability of the horizontal quasi-zero stiffness module 21.

[0098] Combine Figure 1 、 Figure 2 and Figure 4 As shown, according to one embodiment of the present invention, the vertical quasi-zero stiffness structure 3 includes: a vertical quasi-zero stiffness module 31; wherein the static stiffness of the vertical quasi-zero stiffness module 31 in the vertical direction is 0. In this embodiment, the vertical quasi-zero stiffness module 31 includes: a first annular Halbach magnet assembly 311, a second annular Halbach magnet assembly 312, and a first linear spring 313; in this embodiment, the first annular Halbach magnet assembly 311 is connected to the power battery; the second annular Halbach magnet assembly 312 is connected to the bottom surface of the bracket body 1; and the upper and lower ends of the first linear spring 313 are respectively connected to the first annular Halbach magnet assembly 311 and the second annular Halbach magnet assembly 312. In this embodiment, the first annular Halbach magnet assembly 311 and the second annular Halbach magnet assembly 312 are coaxially arranged.

[0099] In this embodiment, to ensure connection reliability, the upper and lower ends of the first linear spring 313 can also be connected to the underside of the power battery and the bottom surface of the bracket body 1, respectively. In this embodiment, the vertical quasi-zero stiffness module 31 is the primary support for the power battery in this solution. In particular, the stiffness of the first linear spring 313 must meet the requirement of effectively supporting the weight of the power battery.

[0100] Combine Figure 1 、 Figure 2 and Figure 4 As shown, according to one embodiment of the present invention, the first annular Halbach magnet assembly 311 includes: a plurality of first magnetic rings 311a; wherein, the plurality of first magnetic rings 311a are coaxially arranged in the same plane, and adjacent first magnetic rings 311a are spaced apart; further, the second annular Halbach magnet assembly 312 includes: a plurality of second magnetic rings 312a; wherein, the plurality of second magnetic rings 312a are coaxially arranged in the same plane, and adjacent second magnetic rings 312a are spaced apart.

[0101] Combine Figure 1 、 Figure 2 and Figure 4As shown, according to one embodiment of the present invention, the first magnetic ring 311a and the second magnetic ring 312a are staggered; wherein, the interval between adjacent first magnetic rings 311a is greater than the radial width of the second magnetic ring 312a; the interval between adjacent second magnetic rings 312a is greater than the radial width of the first magnetic ring 311a.

[0102] Through the above-mentioned setting, the coplanar overlap of the first annular Halbach magnet assembly 311 and the second annular Halbach magnet assembly 312 can be achieved during the vibration reduction process, so that the vertical quasi-zero stiffness module 31 of this solution has sufficient vibration stroke, effectively ensuring the support capacity of this solution in the vertical direction while also fully saving the internal installation space, making the overall structure more compact.

[0103] Combine Figure 1 、 Figure 2 and Figure 4 As shown, according to one embodiment of the present invention, the first magnetic ring 311a has at least one first ring body 311a1; wherein, if the first magnetic ring 311a has multiple first ring bodies 311a1, the multiple first ring bodies 311a1 are coaxially connected and nested with each other; in this embodiment, the multiple first ring bodies 311a1 are fixedly connected to each other. Furthermore, the second magnetic ring 312a has at least one second ring body 312a1; wherein, if the second magnetic ring 312a has multiple second ring bodies 312a1, the multiple second ring bodies 312a1 are coaxially connected and nested with each other; in this embodiment, the multiple second ring bodies 312a1 are fixedly connected to each other.

[0104] Through the above-mentioned settings, this solution specifically optimizes the structure of the first magnetic ring 311a and the second magnetic ring 312a, so that this solution can fully meet the support performance in the vertical direction, so that it can match the first linear spring 313 to fully achieve quasi-zero stiffness in the vertical direction, wherein, based on the first annular Halbach magnet assembly 311 and the second annular Halbach magnet assembly 312 constituting negative stiffness, and the first linear spring 313 constituting positive stiffness, and then by adjusting the combination of the first annular Halbach magnet assembly 311, the second annular Halbach magnet assembly 312 and the first linear spring 313, precise adjustment to zero stiffness can be achieved more flexibly.

[0105] Combine Figure 1 、 Figure 2 and Figure 4As shown, according to one embodiment of the present invention, the upper end of the first linear spring 313 is nested with the inner / outer side of the first magnetic ring 311a, and the upper end surface of the first linear spring 313 is fixedly connected to the lower side of the power battery. The lower end of the first linear spring 313 is nested with the outer / inner side of the second magnetic ring 312a, and the lower end surface of the first linear spring 313 is fixedly connected to the bottom surface of the bracket body 1. In this embodiment, the upper end of the first linear spring 313 is nested with the outer side of the first magnetic ring 311a in the middle of the first annular Halbach magnet assembly 311, and the lower end of the first linear spring 313 is nested with the inner side of the second magnetic ring 312a in the middle of the second annular Halbach magnet assembly 312.

[0106] Through the above arrangement, the gap between the first magnetic ring 311a and the second magnetic ring 312a is fully utilized, making the installation of the first linear spring 313 more flexible. In particular, the first linear spring 313 of different sizes can be installed in the same manner for the first magnetic ring 311a and the second magnetic ring 312a of the corresponding size. As a result, the installation options (such as size, elasticity, number of settings, etc.) of the first linear spring 313 in this solution are more flexible, thereby effectively ensuring the overall support of the vertical quasi-zero stiffness module 31. In addition, the precise positioning of the installation position of the first linear spring 313 can be accurately achieved, so that it has reliable and stable support capabilities.

[0107] Combine Figure 1 、 Figure 2 、 Figure 4 and Figure 5 As shown, according to one embodiment of the present invention, an odd number of first magnetic rings 311a are provided in the first annular Halbach magnet assembly 311, an odd number of second magnetic rings 312a are provided in the second annular Halbach magnet assembly 312, and the number of first magnetic rings 311a and second magnetic rings 312a is consistent; for example, three first magnetic rings 311a are provided in the first annular Halbach magnet assembly 311, and three second magnetic rings 312a are provided in the second annular Halbach magnet assembly 312.

[0108] Furthermore, to achieve quasi-zero-stiffness support in the vertical direction, the first magnetic ring 311a is further optimized. In the vertical direction (i.e., the axial direction of the first annular Halbach magnet assembly 311), the first magnetic ring 311a is configured as a three-layer stacked structure. In other words, in the vertical direction, the first magnetic ring 311a comprises three stacked layers of magnetic ring structures. To ensure reliable stacking, the magnetic ring structures between adjacent layers are fixed (e.g., bonded). Furthermore, along the radial direction of the first annular Halbach magnet assembly 311, the innermost first magnetic ring 311a comprises a first ring body 311a1. The magnetization directions of the layers within the first ring body 311a1 vary counterclockwise by 90° from top to bottom, with the magnetization direction of the middle layer pointing radially inward.

[0109] In this embodiment, along the radial direction of the first annular Halbach magnet assembly 311, the first magnetic ring 311a at the remaining positions (i.e., except the innermost position) has two first ring bodies 311a1, wherein the magnetization direction of each layer in the first ring body 311a1 on the inner side of the first magnetic ring 311a changes clockwise by 90° from top to bottom, and the magnetization direction of the middle layer is radially outward, and the magnetization direction of each layer in the first ring body 311a1 on the outer side of the first magnetic ring 311a changes counterclockwise by 90° from top to bottom, and the magnetization direction of the middle layer is radially inward.

[0110] In this embodiment, in the first annular Halbach magnet assembly 311 , the magnetization directions of the first magnetic ring 311 a at a non-central position are consistent, so as to fully ensure the support reliability of this solution.

[0111] Furthermore, to achieve quasi-zero-stiffness support in the vertical direction, the second magnetic ring 312a is further optimized. In the vertical direction (i.e., the axial direction of the second annular Halbach magnet assembly 312), the second magnetic ring 312a comprises a five-layer stacked structure. Specifically, in the vertical direction, the second magnetic ring 312a comprises five layers of stacked magnetic ring structures. To ensure reliable stacking, the magnetic ring structures between adjacent layers are fixed (e.g., bonded). Furthermore, in the radial direction of the second annular Halbach magnet assembly 312, the outermost second magnetic ring 312a comprises a second ring body 312a1. The magnetization directions of the layers within the second ring body 312a1 vary clockwise by 90° from top to bottom, with the magnetization direction of the middle layer facing radially outward.

[0112] In this embodiment, along the radial direction of the second annular Halbach magnet assembly 312, the second magnetic ring 312a at the remaining positions (not the outermost positions) has two second ring bodies 312a1, wherein the magnetization direction of each layer in the second ring body 312a1 on the inner side of the second magnetic ring 312a changes clockwise by 90° from top to bottom, and the magnetization direction of the middle layer is radially outward, and the magnetization direction of each layer in the second ring body 312a1 on the outer side of the second magnetic ring 312a changes counterclockwise by 90° from top to bottom, and the magnetization direction of the middle layer is radially inward.

[0113] In this embodiment, in the first annular Halbach magnet assembly 311 , the magnetization directions of the first magnetic ring 311 a at a non-central position are consistent, so as to fully ensure the support reliability of this solution.

[0114] Through the above arrangement, the present solution utilizes the first annular Halbach magnet assembly 311 and the second annular Halbach magnet assembly 312 in the manner described above, making it easier for the negative stiffness design of the magnet assembly to match the positive stiffness of the first linear spring 313, thereby providing the present solution with improved support performance for the vertical quasi-zero stiffness module 31. Furthermore, the magnetic repulsion between the first annular Halbach magnet assembly 311 and the second annular Halbach magnet assembly 312 can more effectively prevent collisions, making the present solution even more beneficial in terms of performance.

[0115] Combine Figure 1 and Figure 6 As shown, according to one embodiment of the present invention, the three-way vibration absorbing structure 4 is a spatially orthogonally symmetrical layout, which includes: a vibration absorbing structure shell 41, a vibrator 42 arranged in the vibration absorbing structure shell 41, and a third linear spring 43 for connecting the vibration absorbing structure shell 41 and the vibrator 42; in this embodiment, the vibration absorbing structure shell 41 is a hollow shell with a regular structure.

[0116] In this embodiment, a third magnetic ring 411 is connected to the inner walls of the upper and lower ends of the vibration absorbing structure shell 41 in the vertical direction; the third magnetic ring 411 has at least one third ring body 411a, wherein, if multiple third ring bodies 411a are provided, the multiple third ring bodies 411a are coaxially stacked; see Figure 7 In this embodiment, the magnetization direction of the third ring body 411a is set in a vertical direction toward the vibrator 42; specifically, the magnetization direction of the third ring body 411a in the third magnetic ring 411 set at the upper end of the vibration absorbing structure shell 41 is set vertically downward, while the magnetization direction of the third ring body 411a in the third magnetic ring 411 set at the lower end of the vibration absorbing structure shell 41 is set vertically upward.

[0117] Furthermore, in the vertical direction, a hollow annular connector 412 is provided in the middle of the inner side wall of the vibration absorbing structure housing 41; and a fourth magnetic ring 412a is provided in the annular connector 412; wherein, see Figure 7 The fourth magnetic ring 412a is stacked with three layers of magnetic rings, and from top to bottom, the magnetization direction of each layer of magnetic rings in the fourth magnetic ring 412a changes clockwise by 90°. Specifically, the magnetization direction of the uppermost magnetic ring in the fourth magnetic ring 412a is set in a radially outward direction, the magnetization direction of the magnetic ring in the middle layer is set in a vertically downward direction, and the magnetization direction of the magnetic ring in the bottom layer is set in a radially inward direction.

[0118] In this embodiment, the vibrator 42 has a regular structure and includes: a hollow vibrator housing 421, a fifth magnetic ring 422 and a sixth magnetic ring 423 coaxially arranged in the vibrator housing 421; wherein, in the vertical direction, the fifth magnetic ring 422 is symmetrically arranged on opposite sides of the sixth magnetic ring 423; the fifth magnetic ring 422 has at least one fifth ring body 422a, wherein, if multiple fifth ring bodies 422a are provided, the multiple fifth ring bodies 422a are coaxially stacked; see Figure 7 In this embodiment, the magnetization direction of the fifth magnetic ring 422 is set in a vertical direction toward the third magnetic ring 411; specifically, the magnetization direction of the fifth ring body 422a in the fifth magnetic ring 422 set at the upper end of the vibrator 42 is set vertically upward, and the magnetization direction of the fifth ring body 422a in the fifth magnetic ring 422 set at the lower end of the vibrator 42 is set vertically downward.

[0119] In this embodiment, the axial thickness of the sixth magnetic ring 423 is consistent with the axial thickness of the fourth magnetic ring 412a; Figure 7 The sixth magnetic ring 423 is arranged by stacking three layers of magnetic rings, and from top to bottom, the magnetization direction of each layer of magnetic rings in the sixth magnetic ring 423 changes counterclockwise by 90°. Specifically, the magnetization direction of the uppermost magnetic ring in the sixth magnetic ring 423 is set in the radial inward direction, the magnetization direction of the magnetic ring in the middle layer is set in the vertical downward direction, and the magnetization direction of the magnetic ring in the bottom layer is set in the radial outward direction.

[0120] In this embodiment, along the radial direction of the vibrator housing 421, one end of the third linear spring 43 is connected to the vibrator housing 421, and the other end of the third linear spring 43 is connected to the annular connector 412; along the circumference of the vibrator housing 421, four third linear springs 43 are arranged at equal angles.

[0121] In this embodiment, along the vertical direction, the third linear spring 43, the third magnetic ring 411, and the fifth magnetic ring 422 form a cubic nonlinear stiffness; along the horizontal direction, the third linear spring 43, the fourth magnetic ring 412a, and the sixth magnetic ring 423 form a quasi-zero stiffness.

[0122] Through the above arrangement, the three-way vibration absorbing structure 4 of this solution adopts a spatial orthogonal symmetrical layout to achieve sufficient induction in different directions, thereby being able to fully absorb the vibration of the power battery, thereby effectively improving the vibration absorbing capacity of this solution.

[0123] Combine Figure 1 and Figure 6 As shown, according to one embodiment of the present invention, the energy recovery structure 5 includes a coil 51 and an electric energy conversion interface circuit 52 connected to the coil 51. The coil 51 is wound around the vibration absorbing structure housing 41, and the electric energy conversion interface circuit 52 is mounted on the bracket body 1. In this embodiment, the leads of the coil 51 pass through the bracket body 1 to connect to the electric energy conversion interface circuit 52. In this embodiment, the electric energy conversion interface circuit 52 uses a bridge rectifier circuit.

[0124] Through the above configuration, this solution's multi-directional, quasi-zero-stiffness, simultaneous vibration reduction and energy harvesting bracket for the power battery achieves full vibration reduction in the fore-aft, lateral, and vertical directions. It can handle low-frequency vibrations while maintaining high load capacity in various directions. Furthermore, this solution efficiently converts vibration energy from the power battery into electrical energy, significantly reducing the constraints between vibration reduction and energy harvesting.

[0125] Through the above-mentioned settings, this solution adopts two sets of horizontal quasi-zero stiffness modules 21 (a combination structure of linear spring + magnetic spring) in the horizontal direction and is arranged orthogonally symmetrically. It generates negative stiffness based on the first horizontal magnet assembly 211 and the second horizontal magnet assembly 212, while the upper spring 213 and the lower spring 214 can generate positive stiffness, so that the quasi-zero stiffness effect is fully achieved in the horizontal direction; in the vertical direction, the first annular Halbach magnet assembly 311, the second annular Halbach magnet assembly 312 and the first linear spring 313 are combined to achieve the effect of spiral spring + coaxial nested Halbach magnetic spring, fully achieving the quasi-zero stiffness effect in the vertical direction.

[0126] Through the above arrangement, the vibrator 42 in the three-way vibration absorbing structure 4 of this solution is integrated with a ring-shaped Halbach array to enhance the internal magnetic field strength, thereby conveniently and efficiently converting the vibration energy into electrical energy.

[0127] Through the above-mentioned setting, this solution can fully utilize the cubic nonlinear stiffness formed by the magnetic force and spring force in the vertical direction to achieve strong nonlinearity in different directions. The linear terms are eliminated through the optimization and matching design of the structural parameters, so that the vibration of the power battery can be transmitted to the Halbach array in the three-dimensional vibration absorption structure 4 as much as possible, and the relative movement between the Halbach array and the coil is enhanced for collection. Finally, the interface circuit is used to convert as much collected energy as possible into electrical energy for storage.

[0128] Through the above settings, the horizontal quasi-zero stiffness structure 2 and the vertical quasi-zero stiffness structure 3 of this scheme constitute a three-directional quasi-zero stiffness unit with a spatially orthogonal symmetrical layout, and combined with the three-directional vibration absorption structure 4 with a spatially orthogonal symmetrical layout, the vibration coupling in the x, y and z directions is fully reduced.

[0129] The above contents are merely examples of specific solutions of the present invention. For devices and structures not described in detail, it should be understood that they can be implemented by adopting general devices and methods available in the art.

[0130] The above description is merely one embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. The multi-directional quasi-zero stiffness synchronous vibration reduction and energy collection bracket for power batteries is characterized by: include: A bracket body (1), a horizontal quasi-zero stiffness structure (2) and a vertical quasi-zero stiffness structure (3) provided on the bracket body (1) for connecting to a power battery, a three-dimensional vibration absorbing structure (4) for mounting on the power battery, and an energy recovery structure (5) connected to the three-dimensional vibration absorbing structure (4); The horizontal quasi-zero stiffness structure (2) is regularly arranged along the circumference of the bracket body (1) to provide vibration-reducing support for the power battery in the horizontal direction; The vertical quasi-zero stiffness structure (3) provides vibration reduction support for the power battery in the vertical direction; The three-way vibration absorbing structure (4) is installed on the upper side of the power battery in a vertical direction, and is used to absorb the vibration energy of the power battery; The energy recovery structure (5) is used to convert the vibration energy absorbed by the three-way vibration absorbing structure (4) into electrical energy and output it; The horizontal quasi-zero stiffness structure (2) comprises: four groups of horizontal quasi-zero stiffness modules (21); The static stiffness of each group of horizontal quasi-zero stiffness modules (21) in the horizontal direction is 0; Along the circumference of the support body (1), the four groups of horizontal quasi-zero stiffness modules (21) are regularly arranged at intervals; The horizontal quasi-zero stiffness module (21) comprises: a first horizontal magnet assembly (211), a second horizontal magnet assembly (212), an upper spring (213) and a lower spring (214); The first horizontal magnet assembly (211) and the second horizontal magnet assembly (212) are spaced apart; wherein the first horizontal magnet assembly (211) is used to connect to the side wall of the power battery, and the second horizontal magnet assembly (212) is connected to the side wall of the bracket body (1); The first horizontal magnet assembly (211) and the second horizontal magnet assembly (212) are respectively rectangular Halbach arrays; The opposite ends of the upper spring (213) are respectively connected to the upper side of the edge of the power battery and the upper side of the bracket body (1); The opposite ends of the lower spring (214) are respectively connected to the lower side of the edge of the power battery and the lower side of the bracket body (1); Along the horizontal direction, the magnetic force between the first horizontal magnet assembly (211) and the second horizontal magnet assembly (212) is a repulsive force; The vertical quasi-zero stiffness structure (3) comprises: a vertical quasi-zero stiffness module (31); The vertical quasi-zero stiffness module (31) has a static stiffness of 0 in the vertical direction; The vertical quasi-zero stiffness module (31) comprises: a first annular Halbach magnet assembly (311), a second annular Halbach magnet assembly (312), and a first linear spring (313); The first annular Halbach magnet assembly (311) is connected to the power battery; The second annular Halbach magnet assembly (312) is connected to the bottom surface of the bracket body (1); The upper and lower ends of the first linear spring (313) are respectively connected to the lower side of the power battery and the bottom surface of the bracket body (1); The first annular Halbach magnet assembly (311) and the second annular Halbach magnet assembly (312) are coaxially arranged.

2. The multi-directional quasi-zero stiffness synchronous vibration reduction and energy collection bracket for power batteries according to claim 1, characterized in that: The first annular Halbach magnet assembly (311) comprises: a plurality of first magnetic rings (311a); A plurality of the first magnetic rings (311a) are coaxially arranged in the same plane, and adjacent first magnetic rings (311a) are spaced apart; The second annular Halbach magnet assembly (312) comprises: a plurality of second magnetic rings (312a); A plurality of second magnetic rings (312a) are coaxially arranged in the same plane, and adjacent second magnetic rings (312a) are spaced apart.

3. The multi-directional quasi-zero stiffness synchronous vibration reduction and energy collection bracket for power batteries according to claim 2, characterized in that: The first magnetic ring (311a) and the second magnetic ring (312a) are arranged in a staggered manner; The interval between adjacent first magnetic rings (311a) is greater than the radial width of the second magnetic ring (312a); The interval between adjacent second magnetic rings (312a) is greater than the radial width of the first magnetic ring (311a).

4. The multi-directional quasi-zero stiffness synchronous vibration reduction and energy collection bracket for power batteries according to claim 3, characterized in that: The first magnetic ring (311a) has at least one first ring body (311a1); If the first magnetic ring (311a) has a plurality of first ring bodies (311a1), the plurality of first ring bodies (311a1) are coaxially connected and nested with each other; The second magnetic ring (312a) has at least one second ring body (312a1); If the second magnetic ring (312a) has a plurality of second ring bodies (312a1), the plurality of second ring bodies (312a1) are coaxially connected and nested with each other.

5. The multi-directional quasi-zero stiffness synchronous vibration reduction and energy collection bracket for power batteries according to claim 4, characterized in that: The upper end of the first linear spring (313) is nested with the inner side / outer side of the first magnetic ring (311a), and the upper end surface of the first linear spring (313) is fixedly connected to the lower side of the power battery; the lower end of the first linear spring (313) is nested with the outer side / inner side of the second magnetic ring (312a), and the lower end surface of the first linear spring (313) is fixedly connected to the bottom surface of the bracket body (1).

6. The power battery multi-directional quasi-zero stiffness synchronous vibration reduction and energy collection bracket according to claim 5, characterized in that: The first horizontal magnet assembly (211) comprises: an odd number of first rectangular magnets, wherein the plurality of first rectangular magnets are arranged and connected in sequence along the side wall of the power battery; In the first horizontal magnet assembly (211), the magnetization directions of adjacent first rectangular magnets are opposite, and the magnetization direction of the first rectangular magnet in the middle position is arranged in a direction toward the second horizontal magnet assembly (212); The second horizontal magnet assembly (212) comprises: an odd number of second rectangular magnets, wherein the plurality of second rectangular magnets are arranged and connected in sequence along the side wall of the bracket body (1); In the second horizontal magnet assembly (212), the magnetization directions of adjacent second rectangular magnets are opposite, and the magnetization direction of the second rectangular magnet in the middle position is arranged in a direction toward the first horizontal magnet assembly (211); An odd number of the first magnetic rings (311a) is provided in the first annular Halbach magnet assembly (311), an odd number of the second magnetic rings (312a) is provided in the second annular Halbach magnet assembly (312), and the number of the first magnetic rings (311a) and the number of the second magnetic rings (312a) are the same; The first magnetic ring (311a) is a three-layer stacked structure; Along the radial direction of the first annular Halbach magnet assembly (311), the innermost first magnetic ring (311a) has a first ring body (311a1), wherein the magnetization direction of each layer in the first ring body (311a1) changes counterclockwise by 90 degrees from top to bottom, and the magnetization direction of the middle layer is radially inward; Along the radial direction of the first annular Halbach magnet assembly (311), the first magnetic ring (311a) at the remaining position has two first ring bodies (311a1), wherein the magnetization direction of each layer in the first ring body (311a1) inside the first magnetic ring (311a) changes clockwise by 90 degrees from top to bottom, and the magnetization direction of the middle layer is radially outward, and the magnetization direction of each layer in the first ring body (311a1) outside the first magnetic ring (311a) changes counterclockwise by 90 degrees from top to bottom, and the magnetization direction of the middle layer is radially inward; The second magnetic ring (312a) is a five-layer stacked structure; Along the radial direction of the second annular Halbach magnet assembly (312), the outermost second magnetic ring (312a) has a second ring body (312a1), wherein the magnetization direction of each layer in the second ring body (312a1) changes clockwise by 90 degrees from top to bottom, and the magnetization direction of the middle layer is radially outward; Along the radial direction of the second annular Halbach magnet assembly (312), the second magnetic ring (312a) at the remaining position has two second ring bodies (312a1), wherein the magnetization direction of each layer in the second ring body (312a1) inside the second magnetic ring (312a) changes clockwise by 90 degrees from top to bottom, and the magnetization direction of the middle layer is radially outward, and the magnetization direction of each layer in the second ring body (312a1) outside the second magnetic ring (312a) changes counterclockwise by 90 degrees from top to bottom, and the magnetization direction of the middle layer is radially inward.

7. The multi-directional quasi-zero stiffness synchronous vibration reduction and energy collection bracket for power batteries according to claim 6, characterized in that: The three-way vibration absorbing structure (4) is arranged in a spatially orthogonal symmetric layout, and comprises: a vibration absorbing structure shell (41), a vibrator (42) arranged in the vibration absorbing structure shell (41), and a third linear spring (43) for connecting the vibration absorbing structure shell (41) and the vibrator (42); The vibration absorbing structural shell (41) is a hollow shell with a regular structure; In the vertical direction, a third magnetic ring (411) is connected to the inner walls of the upper and lower ends of the vibration absorbing structure housing (41); The third magnetic ring (411) has at least one third ring body (411a), wherein if a plurality of third ring bodies (411a) are provided, the plurality of third ring bodies (411a) are coaxially stacked. A hollow annular connecting piece (412) is provided in the middle of the inner side wall of the vibration absorbing structural shell (41) in the vertical direction; A fourth magnetic ring (412a) is provided in the annular connecting member (412); The vibrator (42) has a regular structure, comprising: a hollow vibrator shell (421), a fifth magnetic ring (422) and a sixth magnetic ring (423) coaxially arranged in the vibrator shell (421); Along the vertical direction, the fifth magnetic ring (422) is symmetrically arranged on two opposite sides of the sixth magnetic ring (423); The fifth magnetic ring (422) has at least one fifth ring body (422a), wherein if a plurality of the fifth ring bodies (422a) are provided, the plurality of the fifth ring bodies (422a) are coaxially stacked; The axial thickness of the sixth magnetic ring (423) is consistent with the axial thickness of the fourth magnetic ring (412a); Along the radial direction of the vibrator housing (421), one end of the third linear spring (43) is connected to the vibrator housing (421), and the other end of the third linear spring (43) is connected to the annular connecting member (412); Along the circumference of the vibrator housing (421), four third linear springs (43) are arranged at equal intervals of angle; Along the vertical direction, the third linear spring (43), the third magnetic ring (411), and the fifth magnetic ring (422) form a cubic nonlinear stiffness; Along the horizontal direction, the third linear spring (43), the fourth magnetic ring (412a) and the sixth magnetic ring (423) form a quasi-zero stiffness.

8. The multi-directional quasi-zero stiffness synchronous vibration reduction and energy collection bracket for power batteries according to claim 7, characterized in that: The energy recovery structure (5) comprises: a coil (51) and an electric energy conversion interface circuit (52) connected to the coil (51); The coil (51) is wound on the vibration absorbing structure housing (41); The electric energy conversion interface circuit (52) is mounted on the bracket body (1); The electric energy conversion interface circuit (52) adopts a bridge rectifier circuit.

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