Battery module and wind generating set

Abstract

The utility model provides a battery module and a wind generating set. The battery module comprises a box body, a mounting plate, a plurality of battery units and a top pressing plate, the mounting plate is arranged on the bottom wall of the box body, a limiting structure is formed on the mounting plate, a plurality of battery mounting positions are formed through the limiting structure, the plurality of battery units are respectively arranged in the corresponding battery mounting positions, the top pressing plate is arranged in the box body, and the top pressing plate is arranged on the bottom wall of the box body. The top pressing plate is connected with the side wall of the box body and abuts against the top of the battery unit, the limiting structure can limit the freedom degree of the battery unit in the first direction and the second direction, and the top pressing plate can limit the freedom degree of the battery unit in the third direction. According to the battery module provided by the embodiment of the invention, the plurality of battery units can be firmly fixed in multiple dimensions, and the battery units are not easy to shake or move in the use process, so that the service life of the battery module in the use process can be prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to wind power generation technical field, concretely relates to a battery module and wind generating set. BACKGROUND

[0002] The battery pack in the tower of the wind turbine is a complex assembly structure, which can combine the battery, heater, cable and temperature monitoring and other components together to meet the demand of the wind power system for power storage and management. However, the battery in the existing battery pack is prone to looseness, which will cause a series of adverse consequences, such as battery performance degradation, poor connection between batteries, even battery damage, etc., thereby affecting the service life of the battery pack. Therefore, it is particularly necessary to provide a battery pack in which the battery is not prone to looseness. SUMMARY

[0003] Therefore, the utility model discloses a battery module and wind generating set to solve the problem that the battery is prone to looseness in the prior art, which affects the service life of the battery pack.

[0004] According to the first aspect of the utility model, a battery module is provided, wherein the battery module comprises a box body, a mounting plate, a plurality of battery units and a top pressing plate, wherein the mounting plate is arranged on the bottom wall of the box body, a limiting structure is formed on the mounting plate, and a plurality of battery mounting positions are formed by the limiting structure; the plurality of battery units are arranged in the corresponding battery mounting positions respectively; the top pressing plate is arranged inside the box body, connected with the side wall of the box body, and presses against the top of the battery unit; wherein the limiting structure can limit the degrees of freedom of the battery unit in the first direction and the second direction, the top pressing plate can limit the degree of freedom of the battery unit in the third direction, and the first direction, the second direction and the third direction are perpendicular to each other.

[0005] According to the battery module provided by the embodiment of the application, the plurality of battery units can be fixed in multiple dimensions, and the fixation is firm. In the use process, the battery units are not prone to shaking or moving. Therefore, the service life of the battery unit, which is a core component, can be guaranteed, and the service life of the battery module in the use process can be improved.

[0006] In some embodiments, the limiting structure comprises a plurality of first limiting ribs arranged on the mounting plate and a plurality of second limiting ribs arranged on the mounting plate, the plurality of first limiting ribs respectively extend along the first direction, the plurality of second limiting ribs respectively extend along the second direction, and adjacent first limiting ribs and adjacent second limiting ribs constitute the battery mounting position.

[0007] In the embodiments, the first limiting protrusions extend along a first direction to limit the movement of the battery cells in one dimension, and the second limiting protrusions extend along a second direction different from the first direction, where the first direction can be perpendicular to the second direction or form a non-right angle with the second direction, so that the limiting structure can limit the movement of the battery cells in two different dimensions to prevent the battery cells from sliding or moving on the mounting plate, thereby improving the stability of the battery installation.

[0008] In some embodiments, the first limiting protrusions are formed by bending the local part of the mounting plate upward, and the second limiting protrusions are formed by cutting the local part of the mounting plate and protruding upward.

[0009] In the embodiments, the limiting protrusions are formed in a reasonable manner to form the battery installation position, effectively limit the movement of the battery cells on the mounting plate, and improve the stability and reliability of the battery installation. In addition, in this case, the limiting structure and the mounting plate are integrated, which can improve the overall strength and stability to ensure that they can effectively support and fix the battery cells.

[0010] In some embodiments, the plurality of battery cells are arranged in at least two rows, the first limiting protrusion includes a first flange, a second flange and a middle boss arranged in parallel, the first flange and the second flange are formed by bending the opposite two edges of the mounting plate upward, and the middle boss is formed by bending the local part of the mounting plate upward and located between the adjacent two rows of battery cells.

[0011] In the embodiments, the first limiting protrusion is formed by the combination of the first flange, the second flange and the middle boss, which can effectively fix the battery cells and prevent them from moving or deforming, thereby ensuring the installation stability of the battery cells in the battery module and prolonging the service life of the battery module.

[0012] In some embodiments, the battery module further includes a heater arranged in the box to perform heating when the temperature in the box is lower than a preset threshold value within a preset time period, and provide heat to raise the temperature near the battery cells to ensure that the battery cells of the battery module can still maintain the best working state in a low-temperature environment, thereby protecting the performance and endurance of the battery cells and avoiding the influence of low-temperature environment on the performance of the battery cells.

[0013] In some embodiments, the heater is arranged on the middle boss; and / or the heater is detachably connected with the middle boss.

[0014] In the embodiments, the heater can act on two adjacent rows of battery cells simultaneously, and such a layout not only improves the heating efficiency, but also reduces the number of heaters, thereby reducing the cost. In addition, the heater is installed on the middle boss, so that the space inside the module can be fully utilized, and the heater can avoid occupying too much space, so that the overall structure of the battery module is more compact.

[0015] In some embodiments, the top pressing plate is long strip-shaped and extends along the first direction, and two ends of the top pressing plate are connected with the opposite two side walls of the box body, respectively.

[0016] In the embodiments, the top pressing plate is long strip-shaped and extends along the first direction, so that the top pressing plate can cover and press the top of the plurality of battery cells while keeping the structure simple and compact. Two ends of the top pressing plate are connected with the opposite two side walls of the box body, respectively. Such a connection mode can ensure that the top pressing plate is stably fixed in the box body and effectively presses against the battery cells.

[0017] In some embodiments, the opposite two inner side walls of the box body are fixedly provided with connecting ear plates, and two ends of the top pressing plate are fixed to the connecting ear plates, respectively, so as to facilitate reliable connection of the top pressing plate with the box body.

[0018] In some embodiments, the limiting structure comprises an installation slot formed by being recessed and capable of embedding the battery cell, wherein the height of the installation slot is less than the height of the battery cell, so that when the battery cell is embedded in the installation slot, the battery cell can be taken out through the upper end of the battery cell, which is more convenient. The installation plate is detachably connected with the box body, and the installation plate is fixed to the box body through the detachable connection mode, so as to facilitate replacement of different types of installation plates to meet the installation requirements or maintenance requirements of different types of battery cells, and improve the flexibility of the entire battery module.

[0019] According to a second aspect of the present application, a wind turbine generator is provided, wherein the wind turbine generator comprises a tower drum and the battery module provided in the above embodiments, and the battery module is installed in the tower drum. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and other objects and features of the present application will become more apparent from the following description of embodiments taken in conjunction with the accompanying drawings, in which:

[0021] Figure 1 is a partial cross-sectional structure schematic view of a battery module according to an embodiment of the present application;

[0022] Figure 2 is a partial structure schematic view of a battery module according to an embodiment of the present application;

[0023] Figure 3 FIG. 2 is a structural schematic diagram of a battery module according to an embodiment of the present application after removing the upper cover of the box body;

[0024] Figure 4 FIG. 3 is a schematic diagram of the cooperation structure of the mounting plate, the top pressing plate and the battery of the battery module according to an embodiment of the present application;

[0025] Figure 5 FIG. 4 is a structural schematic diagram of the mounting plate of the battery module according to an embodiment of the present application;

[0026] Figure 6 FIG. 5 is a structural schematic diagram of the mounting plate and the battery unit of the battery module connected according to an embodiment of the present application;

[0027] Figure 7 FIG. 6 is a structural schematic diagram of the top pressing plate of the battery module according to an embodiment of the present application.

[0028] Symbol explanation

[0029] 10, box body; 11, connecting ear plate;

[0030] 20, mounting plate; 21, first limiting rib; 211, first flange; 212, second flange; 213, middle boss; 22, second limiting rib; 23, first group of limiting structures; 24, second group of limiting structures; 25, battery mounting position;

[0031] 30, battery unit;

[0032] 40, top pressing plate; 41, reinforcing plate; 50, heater. DETAILED DESCRIPTION

[0033] The following detailed description is provided to help the reader obtain a complete understanding of the methods, devices, and / or systems described herein. However, various changes, modifications, and equivalents of the methods, devices, and / or systems described herein will be clear to those skilled in the art after understanding the disclosure of the present application. For example, the order of the operations described herein is only an example, and is not limited to those set forth herein, but can be changed as will be clear after understanding the disclosure of the present application, except for the operations that must occur in a specific order. In addition, the description of features known in the art can be omitted for the sake of clarity and brevity.

[0034] The features described herein can be implemented in different forms and should not be construed as limited to the examples described herein. Rather, these examples have been provided so that this disclosure will be thorough and will fully convey the scope of the methods, devices, and / or systems described herein to enable others skilled in the art to

[0035] As used herein, the term "and / or" includes any one of the associated listed items, as well as any combination of any two or more of the associated listed items.

[0036] Although terms such as "first", "second", and "third" can be used herein to describe various components, assemblies, regions, layers or portions, these components, assemblies, regions, layers or portions should not be limited by these terms. Rather, these terms are only used to distinguish one component, assembly, region, layer or portion from another component, assembly, region, layer or portion. Thus, a first component, a first assembly, a first region, a first layer or a first portion referred to in the examples described herein can also be referred to as a second component, a second assembly, a second region, a second layer or a second portion without departing from the teachings of the examples.

[0037] In the specification, when an element such as a layer, a region, or a substrate is described as "on", "connected to", or "mounted to" another element, the element can be directly on, directly connected to, or directly mounted to the other element, or one or more other elements can be interposed therebetween. In contrast, when an element is described as being "directly on", "directly connected to", or "directly mounted to" another element, no other element is interposed therebetween.

[0038] The terms used herein are only used to describe various examples and not to limit the present application. The singular form is intended to include the plural form unless the context clearly indicates otherwise. The terms "comprise", "include" and "have" indicate the presence of the stated feature, number, operation, component, element, and / or combination thereof, but do not exclude the presence or addition of one or more other features, numbers, operations, components, elements, and / or combinations thereof. The term "plurality" represents any number of two or more.

[0039] The orientation terms such as "upper", "lower", "inner", "outer" and the like in the present application are defined based on the orientation of the battery module in the normal use state as the reference. This definition will help the reader or user to clearly understand the relative positional relationship of each component and function, and should not be understood as a limitation of the present application.

[0040] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and this application and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

[0041] Further, in the description of the examples, detailed descriptions of related parts or functions that are considered to cause obscuring interpretation of the present application will be omitted.

[0042] The embodiments of the present application will be described below with reference to the accompanying drawings. Figures 1 to 7 to introduce a battery module provided by the embodiments of the present application.

[0043] According to the embodiments of the present application, a battery module, i.e., a battery pack, is provided. As shown in Figures 1 to 4 The battery module includes a box body 10, a mounting plate 20, a plurality of battery cells 30, and a top pressing plate 40. The mounting plate 20 is arranged on the bottom wall of the box body 10, and a limiting structure is formed on the mounting plate 20. The limiting structure forms a plurality of battery mounting positions 25, and the plurality of battery cells 30 are arranged in the corresponding battery mounting positions 25, respectively. The top pressing plate 40 is arranged inside the box body 10, connected with the side wall of the box body 10, and presses against the top of the battery cell 30. The limiting structure can limit the degrees of freedom of the battery cell 30 in the first direction and the second direction, and the top pressing plate 40 can limit the degree of freedom of the battery cell 30 in the third direction. The first direction, the second direction, and the third direction are perpendicular to each other.

[0044] According to the battery module provided by the embodiments of the present application, the plurality of battery cells 30 can be fixed in multiple dimensions, firmly. In the use process, the battery cell 30 is not easy to shake or move, so that the service life of the battery cell can be guaranteed, thereby improving the service life of the battery module in the use process.

[0045] According to the present application, the inside of the box body 10 has a containing space to accommodate other components inside the battery module, including the plurality of battery cells 30, the mounting plate 20, and the top pressing plate 40. As an example, the box body 10 can have a cubic structure with a containing space, and the cubic structure is consistent with the overall shape after the plurality of battery cells 30 are arranged, which can effectively utilize the internal space and is easy to manufacture and assemble. As an example, the box body 10 has a bottom plate and a side plate connected to the circumferential edge of the bottom plate. The bottom plate serves as the bottom wall of the box body 10, and the side plate serves as the side wall of the box body 10. As an example, the box body 10 also has a top plate. Opening the top plate can expose the containing space to facilitate the assembly of other components inside the battery module.

[0046] According to the embodiments of the present application, the mounting plate 20 can be a separate component arranged on the bottom wall of the box 10, can be integrated with the bottom wall of the box 10 as an integral structure, or can be directly formed by the bottom wall of the box 10, as long as a plurality of battery mounting positions 25 can be formed at the bottom, and the present application does not make too many limitations on this.

[0047] According to the present application, a plurality of battery units 30 are respectively placed in the battery mounting positions 25 formed by the limiting components on the mounting plate 20. The limiting structure can limit the movement of each battery unit in the first direction and the second direction intersecting each other, and the top pressing plate 40 can limit the movement of the battery unit in the third direction, so that the battery unit can be fixed in three dimensions, thereby ensuring the stability in use.

[0048] In the preferred embodiments, the first direction, the second direction and the third direction are perpendicular to each other. For example, the first direction and the second direction can be the length direction and the width direction of the box 10 respectively, and the third direction can be the height direction of the box 10.

[0049] In these embodiments, through the cooperation of the mounting plate 20 and the top pressing plate 40, the battery module can ensure that the battery units 30 are fixed in three mutually perpendicular directions, which is stable and fixed, thereby ensuring the safety and stability of the entire battery module.

[0050] According to the present application, the mounting plate 20 is installed or formed with a limiting structure. As an example, the mounting plate 20 forms a plurality of battery mounting positions 25 through the limiting structure.

[0051] As shown in Figure 4 and Figure 5 The limiting structure includes a plurality of first limiting ribs 21 arranged on the mounting plate 20 and a plurality of second limiting ribs 22 arranged on the mounting plate 20, the plurality of first limiting ribs 21 respectively extend along the first direction, the plurality of second limiting ribs 22 respectively extend along the second direction, adjacent first limiting ribs 21 and adjacent second limiting ribs 22 constitute a battery mounting position 25, and a plurality of battery units 30 are respectively arranged in the corresponding battery mounting positions 25.

[0052] In these embodiments, the mounting plate 20 serves as the base of the entire limiting structure, providing a basis for the formation or installation of the limiting structure. As an example, a plurality of first limiting protrusions 21 and a plurality of second limiting protrusions 22 can be provided on the mounting plate 20. The plurality of first limiting protrusions 21 extend along a first direction, for limiting the movement of the battery unit 30 in one dimension, and the plurality of second limiting protrusions 22 extend along a second direction different from the first direction. Here, the first direction can be perpendicular to the second direction, or can form a non-right angle with the second direction, so that the limiting structure can limit the movement of the battery unit 30 in two different dimensions.

[0053] In these embodiments, the relatively close first limiting protrusions 21 and second limiting protrusions 22 on the mounting plate 20 can enclose the battery mounting position 25, and the battery can be stably placed in the battery mounting position 25, being jointly limited by the first limiting protrusions 21 and the second limiting protrusions 22, so as to prevent it from sliding or moving on the mounting plate 20, thereby improving the stability of the battery installation. In addition, such a design can also make the entire battery installation process simpler and more efficient.

[0054] In some embodiments, the first limiting protrusions 21 are formed by bending the local part of the mounting plate 20 upward, and the second limiting protrusions 22 are formed by cutting the local part of the mounting plate 20 and protruding upward.

[0055] In this embodiment, the first limiting protrusions 21 are formed by bending the local material (e.g., the edge) of the mounting plate 20 upward. As an example, a part of the material can be bent upward along a predetermined direction through a certain process (such as stamping, bending, etc.), so as to form the first limiting protrusions 21. This forming method not only maintains the integrity of the mounting plate 20, but also makes the first limiting protrusions 21 have good connection and strength with the mounting plate 20. The forming method of the second limiting protrusions 22 is different from that of the first limiting protrusions 21. As an example, the local material of the mounting plate 20 can be cut (e.g., cutting the inner region of the mounting plate 20 twice in parallel), and then the cut region is formed by stamping to protrude upward. In this way, the protruding part of the second limiting protrusions 22 can provide a more obvious limiting effect, which is helpful for better fixing the battery.

[0056] In these embodiments, although the first and second limiting ribs 21, 22 are formed differently, their layout and function on the mounting plate 20 complement each other. By rationally forming each limiting rib, a battery mounting position 25 is formed, effectively limiting the movement of the battery cell on the mounting plate 20 and improving the stability and reliability of battery installation. Furthermore, in this case, the limiting structure and mounting plate 20 are integrated, enhancing overall strength and stability, ensuring effective support and securing of the battery cell 30.

[0057] Continuing with the above example, the second limiting rib 22 arches upward from the mounting plate 20 and has a gap between it and the mounting plate 20. In this way, the overall flatness of the mounting plate 20 is avoided from being affected by the molding of the second limiting rib 22, further ensuring the stability of the installation of the battery cell 30.

[0058] It should be noted that, although the above embodiment specifically defines the formation method of the second limiting rib 22 and the first limiting rib 21, the form of the limiting structure of the present application is not limited thereto, and those skilled in the art may, based on the teachings of this application, select other variable forms to form the limiting structure, such as, but not limited to, fixing additional connecting ribs on the mounting plate.

[0059] In some embodiments, multiple battery cells 30 are arranged in at least two columns, and the limiting structure includes at least two corresponding columns, wherein the adjacent first limiting ribs 21 in the limiting structure of each column include parallel first flanges 211 and second flanges 212 and a middle boss 213, the first flanges 211 and the second flanges 212 are respectively formed by folding upwards on the opposite sides of the mounting plate 20, and the middle boss 213 is formed by partially bending upwards the mounting plate 20, and is located between two adjacent columns of battery cells 30.

[0060] like Figures 4 to 6 As shown, the limiting structures include a first set of limiting structures 23 and a second set of limiting structures 24, wherein the central bosses 213 between the first and second sets of limiting structures 23, 24 are connected together or share the same central boss 213. Multiple battery cells 30 are orderly arranged into at least two columns, with each column of battery cells 30 disposed within a set of limiting structures. As an example, each set of limiting structures is arranged in an array. This ensures a simple layout of the internal components of the battery module, facilitating subsequent replacement or maintenance. Furthermore, the aesthetics of the battery cells 30 after installation are ensured.

[0061] In the embodiments, the first flange 211 and the second flange 212 are respectively folded upward from opposite edges of the mounting plate 20, respectively extend in the first direction, and are arranged in parallel with each other in the second direction, so that a limiting barrier in the second direction can be formed, and the movement of the battery unit 30 in the second direction can be limited. It should be noted that in the present application, the folding height and angle of the first flange 211 and the second flange 212 can be adjusted according to the size and weight of the battery unit 30.

[0062] In the embodiments, the middle boss 213 is formed by bending part of the material of the mounting plate 20 upward, and is located between the adjacent two rows of battery units 30. The middle boss 213 can serve as a mounting site of the heater to be mentioned later, so as to facilitate the installation of the heater in the battery module. In addition, the adjacent limiting structures can be isolated to ensure that the batteries do not interfere with each other during installation or maintenance, and the use convenience is ensured. It should be noted that the height and width of the middle boss 213 can also be adjusted according to actual needs, and the present application does not make too many limitations thereon.

[0063] In the embodiments, the first flange 211, the second flange 212 and the middle boss 213 are combined into the first limiting rib 21, and the first limiting rib 21 can effectively fix the battery unit 30 to prevent it from moving or deforming, so as to ensure the installation stability of the battery in the battery module and prolong the service life of the battery module.

[0064] According to the present application, the battery module further comprises a heater 50, wherein the heater 50 is arranged in the box 10, and is used to perform heating when the temperature in the box 10 is below a preset threshold value within a preset time length, and provide heat to improve the temperature near the battery unit 30, so as to ensure that the battery unit 30 of the battery module can still maintain the best working state in a low-temperature environment, thereby protecting the performance and endurance of the battery unit 30 and avoiding the influence of the low-temperature environment on the battery performance.

[0065] In the embodiments, the preset threshold value can be set according to the chemical composition of the specific battery and the working environment. As an example, the preset threshold value can be set above the temperature point at which the battery performance begins to be affected by the low temperature. More specifically, the preset temperature can be set to 10-15℃. The preset time length can be set according to actual needs. As an example, the preset time length can be set to 10-20min. In actual use, when the temperature in the box 10 is maintained below 10-15℃ for 10-20min, the heater 50 is automatically started to provide heat to make the temperature near the battery unit 30 in the best working state of the battery.

[0066] In some embodiments, the type of heater 50 can vary depending on the design and requirements of the battery module. As an example, the heater 50 can include a PTC resistance heater, a thermocouple heater, or a heating sheet.

[0067] In these embodiments, the battery module contains the heater 50, so that the battery module can cope with the influence of low temperature environment on battery performance. By reasonably setting the preset threshold, selecting the appropriate heater type and heating method, and considering factors such as battery state and user settings, the battery module can still maintain the best working state in a low temperature environment.

[0068] According to the present application, the installation position of the heater 50 can be adjusted based on actual needs, so that the flexibility of the arrangement can ensure the convenience of the battery module during installation. In some embodiments, the heater 50 is arranged on the middle boss 213, so that the middle boss 213 is located between the two adjacent rows of battery cells 30, and in this case, the heater 50 can act on the two adjacent rows of battery cells 30 at the same time. This layout not only improves the heating efficiency, but also reduces the number of heater settings, thereby reducing the cost. In addition, installing the heater 50 on the middle boss 213 can make full use of the space inside the module, and can avoid the heater 50 occupying too much space, so that the overall structure of the battery module is more compact.

[0069] In some embodiments, the mounting plate 20 and the middle boss 213 are both made of metal, and heat conduction can occur between the two. Therefore, when the heater is arranged on the middle boss 213, the middle boss 213 can act as a medium for heat conduction, and can uniformly transmit the heat generated by the heater to the surrounding battery cells. This heat conduction method ensures that the temperature difference between the battery cells is minimized, thereby improving the overall performance and stability of the battery module. In addition, it should be noted that the heat generated by the heater 50 can also be dissipated by heat radiation and convection, and the present application does not limit the dissipation method of the heat generated by the heater 50.

[0070] In some embodiments, the heating part is detachably connected to the middle boss 213, so that the heater can be replaced or repaired conveniently.

[0071] According to the present application, the top pressing plate 40 is installed inside the box body 10 and connected to the side wall of the box body 10, which can press the top of all battery cells 30 to effectively fix the battery cells 30 and prevent them from shaking or moving during operation, thereby ensuring the stability and reliability of the battery module as a whole.

[0072] In some embodiments, the top pressing plate 40 is in a long strip shape and extends along the first direction, and the two ends of the top pressing plate 40 are respectively connected to the opposite two side walls of the box body 10.

[0073] In these embodiments, the top pressing plate 40 is long strip-shaped, extending along the first direction, so that the top pressing plate 40 can cover and press the top of the plurality of battery cells 30 while keeping the structure simple and compact. The two ends of the top pressing plate 40 are respectively connected with the two opposite side walls of the box body 10. This connection mode can ensure that the top pressing plate 40 can be stably fixed in the box body 10 and effectively press against the battery cells 30.

[0074] In some embodiments, the top pressing plate 40 can be formed of a metal material, which has high strength and rigidity, so as to ensure that the top pressing plate 40 is not easily deformed when pressing against the battery cells 30, thereby maintaining the reliability of the pressing.

[0075] As shown in Figure 7 The top pressing plate 40 includes a pressing plate body and a reinforcing plate 41 connected to the pressing plate body. The reinforcing plate 41 can enhance the deformation resistance of the top pressing plate 40 to avoid deformation when pressing against the battery cells 30, thereby ensuring the reliability of the pressing against the battery cells 30.

[0076] In some embodiments, the two opposite inner side walls of the box body 10 are fixedly provided with connecting lugs 11, and the two ends of the top pressing plate 40 are respectively fixed to the connecting lugs 11, thereby facilitating the reliable connection of the top pressing plate 40 with the box body 10.

[0077] In some embodiments, the top pressing plate 40 and the box body 10 are fixedly connected, and the connection mode can include, for example, bolt connection or welding. These connection modes can ensure that the connection between the top pressing plate 40 and the box body 10 is firm and reliable, and can withstand various forces and vibrations generated by the battery module during operation.

[0078] In some embodiments, the limiting structure includes an installation groove formed by concave formation and capable of embedding the battery cell 30. The height of the installation groove is less than the height of the battery cell 30, so that when the battery cell is embedded in the installation groove, it can be taken out through the upper end of the battery, which is more convenient.

[0079] In some embodiments, the mounting plate 20 is detachably connected with the box body 10. By detachably connecting the mounting plate 20 to the box body 10, different types of mounting plates can be replaced to meet the installation requirements or maintenance requirements of different types of battery cells 30, and the flexibility of the entire battery module can be improved.

[0080] For example, the bottom wall of the box body 10 and the mounting plate 20 are provided with connecting ports, and the mounting plate 20 and the box body 10 can be fixed by fasteners, thereby achieving quick assembly and disassembly of the mounting plate.

[0081] According to a second aspect of the present application, a wind turbine generator is provided, wherein the wind turbine generator comprises a tower and a battery module as provided in the above embodiments, the battery module is installed in the tower.

[0082] Although the embodiments of the present application have been described in detail above, various modifications and changes can be made to the embodiments of the present application by those skilled in the art without departing from the spirit and scope of the present application. However, it should be understood that these modifications and changes will still fall within the spirit and scope of the embodiments of the present application defined by the claims.

Claims

1. A battery module, characterized in that: The battery module includes: Box (10); A mounting plate (20) is arranged on the bottom wall of the box body (10), and a limiting structure is formed on the mounting plate (20), and a plurality of battery mounting positions (25) are formed by the limiting structure; A plurality of battery units (30) are respectively arranged in corresponding battery installation positions (25); A top pressure plate (40) is disposed inside the box (10), connected to a side wall of the box (10), and pressed against the top of the battery unit (30); The limiting structure is capable of limiting the freedom of the battery unit (30) in a first direction and a second direction, and the top pressure plate (40) is capable of limiting the freedom of the battery unit (30) in a third direction, wherein the first direction, the second direction and the third direction are perpendicular to each other.

2. The battery module according to claim 1, wherein: The limiting structure comprises a plurality of first limiting ribs (21) provided on the mounting plate (20) and a plurality of second limiting ribs (22) provided on the mounting plate (20), wherein the plurality of first limiting ribs (21) extend respectively along the first direction, and the plurality of second limiting ribs (22) extend respectively along the second direction, and adjacent first limiting ribs (21) and adjacent second limiting ribs (22) constitute the battery mounting position (25).

3. The battery module according to claim 2, characterized in that: The first limiting rib (21) is formed by bending a portion of the mounting plate (20) upward, and the second limiting rib (22) is formed by cutting a portion of the mounting plate (20) and protruding upward.

4. The battery module according to claim 3, characterized in that: The plurality of battery cells (30) are arranged in at least two rows, and the adjacent first limiting ribs (21) include a first flange (211) and a second flange (212) arranged in parallel, and a middle boss (213). The first flange (211) and the second flange (212) are respectively formed by folding upwards the two opposite sides of the mounting plate (20), and the middle boss (213) is formed by partially bending upwards the mounting plate (20) and is located between two adjacent rows of battery cells (30).

5. The battery module according to claim 4, characterized in that: The battery module further includes a heater (50) disposed in the box (10) and configured to perform heating when the temperature in the box (10) is lower than a preset threshold value within a preset time period.

6. The battery module according to claim 5, characterized in that: The heater (50) is arranged on the middle boss (213); and / or the heater (50) is detachably connected to the middle boss (213).

7. The battery module according to claim 1, characterized in that: The top pressing plate (40) is in the shape of an elongated strip and extends along the first direction. Both ends of the top pressing plate (40) are respectively connected to two opposite side walls of the box body (10).

8. The battery module according to claim 7, characterized in that: Connecting ear plates (11) are fixedly provided on two opposite inner side walls of the box body (10), and both ends of the top pressure plate (40) are respectively fixed to the connecting ear plates (11).

9. The battery module according to claim 1, wherein: The limiting structure includes an inwardly concave mounting groove capable of embedding the battery unit (30); and / or the mounting plate (20) is detachably connected to the box body (10).

10. A wind turbine generator set, characterized in that: The wind turbine generator set includes a tower and a battery module according to any one of claims 1 to 9, wherein the battery module is installed in the tower.

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