End plate reinforcing structure and battery module

Abstract

The utility model relates to an end plate reinforcing structure and a battery module, in the end plate reinforcing structure, an end plate is fixedly arranged on a first mounting part, and the first surface of the end plate is attached to each column of battery cell group; the supporting plate is fixedly arranged on the second mounting part and comprises a first panel and a second panel, the first panel is attached to the second mounting part, and the second panel is attached to the second face of the end plate, so that the end plate structure is reinforced, and the deformation risk of the end plate is reduced. The end plate is arranged on the first mounting part of the bottom plate, so that a channel can be provided for wiring of each column of battery cell groups, and each column of battery cell groups can be restrained; the supporting plate is arranged on the second mounting part, so that the strength of the end plate of the battery module is enhanced, the reliability of a mechanical structure of the battery module is improved, excessive assembly is reduced, the mounting space of a low-voltage output pole is prevented from being occupied, the pulling deformation of a bus column to a battery cell pole is avoided, meanwhile, the supporting plate and the end plate are convenient to disassemble, and the later maintainability is high.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to an end plate reinforcement structure and a battery module. Background Art

[0002] With the development of battery technology, the application fields of batteries are becoming more and more extensive. Batteries are divided into single-cell batteries and multi-cell batteries. In the manufacture of multi-cell batteries, multiple cells need to be connected in series and / or in parallel to form a battery module, and then put into use; battery modules can be divided into single-row battery modules, double-row battery modules or multi-row battery modules according to the arrangement of the cells. For double-row or multi-row battery modules, the middle upper end of the end plate of the battery module expands and deforms greatly, and the end plate bolts are easily broken.

[0003] At present, in the end plate structure of the existing double-row or multi-row battery module, the end plate is usually reinforced by increasing the bolt strength or adding bolts, but the deformation in the middle of the end plate is still large, and the bolts are easily deformed by force, causing the bolts to break, resulting in severe pulling of the battery cell pole bus, and the battery cell pole is subjected to excessive force and fails; in addition, if there are too many bolts, it is easy to cause over-fitting of the battery module and squeeze the installation space of the low-voltage output pole. Utility Model Content

[0004] Based on this, it is necessary to provide a method to enhance the strength of the end plate of the battery module, improve the reliability of the mechanical structure of the battery module, reduce over-assembly, avoid occupying the installation space of the low-voltage output pole, avoid the busbar from pulling and deforming the battery cell pole, and provide an end plate reinforcement structure and battery module with strong maintainability in the later stage, in order to address the problems existing in the end plate structure of the above-mentioned existing battery modules.

[0005] In a first aspect, the present application provides an end plate reinforcement structure, which is applied to a battery module. The battery module includes a bottom plate, and the bottom plate includes a first support area and a second support area. The first support area is used to support a plurality of columns of battery cell groups; the second support area is provided with a first mounting portion and a second mounting portion; the end plate reinforcement structure includes:

[0006] An end plate, the end plate is fixedly arranged on the first mounting portion, and a first surface of the end plate is attached to each column of battery cell groups;

[0007] The support plate is fixedly arranged on the second mounting portion, and the support plate comprises a first panel and a second panel, the first panel is attached to the second mounting portion, and the second panel is attached to the second surface of the end plate.

[0008] In one of the embodiments, the end plate reinforcement structure further includes a rib group, the rib group includes a first rib and a second rib, the first rib is arranged on the first panel, and the second rib is arranged on the second panel; the first rib is connected to the corresponding second rib.

[0009] In one embodiment, the end plate reinforcement structure further includes a first locking member; the first panel is provided with a first through hole, and the second mounting portion is provided with a second through hole;

[0010] The first locking member passes through the first through hole and the second through hole to lock the support plate on the second mounting portion.

[0011] In one embodiment, the first panel is provided with at least two first ribs parallel to each other, and the first through hole is provided between adjacent first ribs.

[0012] In one embodiment, the first through hole is an annular hole structure.

[0013] In one embodiment, the end plate reinforcement structure further includes a plurality of second locking members; the end plate is provided with a plurality of third through holes, and the first mounting portion is provided with a plurality of fourth through holes; each of the fourth through holes corresponds to each of the third through holes one by one;

[0014] Each second locking member passes through the corresponding third through hole and the corresponding fourth through hole to lock the end plate on the first mounting portion.

[0015] In one embodiment, the second mounting portion is adjacent to a center position of the first mounting portion.

[0016] In one embodiment, the first panel is perpendicular to the second panel.

[0017] In a second aspect, the present application provides a battery module, comprising a bottom plate, a plurality of rows of battery cell groups, and an end plate reinforcement structure as described above;

[0018] The bottom plate includes a first supporting area and a second supporting area, the first supporting area is used to support each column of battery cell groups; the second supporting area is provided with a first mounting portion and a second mounting portion;

[0019] The first mounting portion is used to fix the end plate, and the second mounting portion is used to fix the support plate.

[0020] In one embodiment, the battery module further includes a first side plate and a second side plate; a first step is provided at the first side end of the end plate, and a second step is provided at the second side end of the end plate; the first side plate is installed on the first step, and the second side plate is installed on the second step.

[0021] One of the above technical solutions has the following advantages and beneficial effects:

[0022] The above-mentioned end plate reinforcement structure is applied to a battery module, which includes a bottom plate, and the bottom plate includes a first supporting area and a second supporting area, the first supporting area is used to support several columns of battery cell groups; the second supporting area is provided with a first mounting portion and a second mounting portion; the end plate reinforcement structure includes an end plate and a support plate; the end plate is fixedly arranged at the first mounting portion, and the first surface of the end plate is attached to each column of battery cell groups; the support plate is fixedly arranged at the second mounting portion, and the support plate includes a first panel and a second panel, the first panel is attached to the second mounting portion, and the second panel is attached to the second surface of the end plate, thereby strengthening the end plate structure and reducing the risk of deformation of the end plate. The present application provides a channel for the routing of each column of battery cell groups and heat dissipation for each column of battery cell groups by setting the end plate on the first mounting portion of the base plate, thereby constraining each column of battery cell groups together and effectively controlling the thermal expansion of the battery cells; by setting the support plate on the second mounting portion of the base plate, and making the first panel of the support plate adhere to the second mounting portion, and the second panel adhere to the second surface of the end plate, the strength of the end plate of the battery module is enhanced, the reliability of the mechanical structure of the battery module is improved, over-assembly is reduced, and the installation space of the low-voltage output pole is avoided, and the bus column is avoided from pulling and deforming the battery cell pole. At the same time, the support plate and the end plate are easy to disassemble, and the subsequent maintainability is strong. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a partial structural schematic diagram of the end plate reinforcement structure from a first perspective in an embodiment of the present application;

[0024] Figure 2 This is a schematic diagram of a first exploded partial structure of the end plate reinforcement structure in an embodiment of the present application;

[0025] Figure 3 This is a schematic diagram of a second exploded structure of the end plate reinforcement structure in an embodiment of the present application;

[0026] Figure 4 This is a schematic cross-sectional structure diagram of the end plate reinforcement structure in the embodiment of the present application;

[0027] Figure 5 This is a schematic diagram of the structure of the battery module from a first perspective in an embodiment of the present application.

[0028] Reference numerals:

[0029] 10. Bottom plate; 110. First supporting area; 120. Second supporting area; 122. First mounting portion; 124. Fourth through hole; 126. Second mounting portion; 128. Second through hole; 20. Cell group; 30. End plate; 310. Third through hole; 40. Support plate; 410. First panel; 412. First rib; 414. First through hole; 420. Second panel; 422. Second rib; 50. First locking member; 60. Second locking member; 70. First side plate; 80. Second side plate. DETAILED DESCRIPTION

[0030] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0031] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover inclusions that are not listed. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0032] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0033] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to specific circumstances.

[0034] In addition, the term "plurality" shall mean two or more.

[0035] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0036] In one embodiment, Figure 1 and Figure 2As shown, an end plate reinforcement structure is provided, which is applied to a battery module. The battery module includes a base plate 10, and the base plate 10 includes a first support area 110 and a second support area 120. The first support area 110 is used to support a plurality of columns of battery cell groups 20; the second support area 120 is provided with a first mounting portion 122 and a second mounting portion 126; the end plate 30 reinforcement structure includes an end plate 30 and a support plate 40; the end plate 30 is fixedly arranged at the first mounting portion 122, and the first surface of the end plate 30 is affixed to each column of battery cell groups 20; the support plate 40 is fixedly arranged at the second mounting portion 126, and the support plate 40 includes a first panel 410 and a second panel 420, the first panel 410 is affixed to the second mounting portion 126, and the second panel 420 is affixed to the second surface of the end plate 30.

[0037] Among them, the battery module can be, but is not limited to, a battery module of a double-column battery cell group 20 or a battery module of a multi-column battery cell group 20. The battery cell group 20 can be composed of a plurality of battery cells connected in series and / or in parallel. Exemplarily, the battery cell can be a lithium battery cell. The battery module includes a base plate 10, which can be used to support each column of the battery cell group 20, and the base plate 10 can also be used to support the installation end plate 30. The base plate 10 can be divided into a first support area 110 and a second support area 120, the first support area 110 can be used to support each column of the battery cell group 20, and the second support area 120 can be used to support the installation end plate 30 and the support plate 40. In one example, the height of the second support area 120 is greater than the height of the first support, and the number of the second support area 120 is 2, and the two second support areas 120 are located between the first support areas 110.

[0038] The second support area 120 is provided with a first mounting portion 122 and a second mounting portion 126, wherein the first mounting portion 122 is adjacent to the first support area 110, and the second mounting portion 126 is away from the second support area 120. The first mounting portion 122 can be used to mount the end plate 30, and the second mounting portion 126 can be used to mount the support plate 40. In one example, there are two second support areas 120, and correspondingly, there are two end plates 30 and two support plates 40, respectively, wherein one end plate 30 is mounted on the first mounting portion 122 of one of the first support areas 110, and one support plate 40 is mounted on the second mounting portion 126 of the corresponding first support area 110; another end plate 30 is mounted on the first mounting portion 122 of another first support area 110, and another support plate 40 is mounted on the second mounting portion 126 of the corresponding first support area 110.

[0039] The end plate 30 can be detachably mounted on the first mounting portion 122 of the bottom plate 10. The end plate 30 includes a first surface and a second surface. The first surface of the end plate 30 is opposite to the second surface. By attaching the first surface of the end plate 30 to each column of the battery cell group 20, the battery cell group 20 in each column can be restrained, and the thermal expansion of the battery cell can be effectively controlled. Furthermore, a plurality of channels are provided in the end plate 30, so as to provide channels for the routing of each column of the battery cell group 20 and to dissipate heat for each column of the battery cell group 20.

[0040] The support plate 40 can be detachably mounted on the second mounting portion 126 of the bottom plate 10, and the support plate 40 can be used to strengthen the structure of the end plate 30. The support plate 40 includes a first panel 410 and a second panel 420, and the first panel 410 and the second surface are an integrally formed structure. The first surface of the first panel 410 of the support plate 40 is attached to the second mounting portion 126 of the bottom plate 10, and the first surface of the second panel 420 of the support plate 40 is attached to the second surface of the end plate 30, thereby enhancing the strength of the battery module end plate 30 to resist deformation of the end plate 30.

[0041] In the above-mentioned embodiment, by dividing the bottom plate 10 into a first support area 110 and a second support area 120, the first support area 110 is used to support a plurality of columns of battery cell groups 20; the second support area 120 is provided with a first mounting portion 122 and a second mounting portion 126; the end plate 30 reinforcement structure includes an end plate 30 and a support plate 40; the end plate 30 is fixedly arranged at the first mounting portion 122, and the first surface of the end plate 30 is adhered to each column of battery cell groups 20; the support plate 40 is fixedly arranged at the second mounting portion 126, and the support plate 40 includes a first panel 410 and a second panel 420, the first panel 410 is adhered to the second mounting portion 126, and the second panel 420 is adhered to the second surface of the end plate 30, thereby achieving reinforcement of the structure of the end plate 30 and reducing the risk of deformation of the end plate 30. The present application sets the end plate 30 on the first mounting portion 122 of the base plate 10, thereby providing a channel for the routing of each column of battery cell groups 20 and dissipating heat for each column of battery cell groups 20, constraining each column of battery cell groups 20 together, and effectively controlling the thermal expansion of the battery cells; by setting the support plate 40 on the second mounting portion 126 of the base plate 10, and making the first panel 410 of the support plate 40 affixed to the second mounting portion 126, and the second panel 420 affixed to the second surface of the end plate 30, the strength of the battery module end plate 30 is enhanced, the reliability of the battery module mechanical structure is improved, over-assembly is reduced, the installation space of the low-voltage output pole is avoided, and the bus column is avoided from pulling and deforming the battery cell pole. At the same time, the support plate 40 and the end plate 30 are easy to disassemble, and the later maintainability is strong.

[0042] In one embodiment, Figure 1 and Figure 2As shown, the end plate reinforcement structure also includes a rib group, which includes a first rib 412 and a second rib 422 . The first rib 412 is arranged on the first panel 410 , and the second rib 422 is arranged on the second panel 420 ; the first rib 412 is connected to the corresponding second rib 422 .

[0043] The first convex rib 412 may be a long strip convex rib, and the first convex rib 412 and the first panel 410 are an integrally formed structure. The second convex rib 422 may be a long strip convex rib, and the second convex rib 422 and the second panel 420 are an integrally formed structure.

[0044] For example, the first panel 410 may be provided with a first rib 412, and the second panel 420 may be provided with a second rib 422. Based on the connection between the first rib 412 and the second rib 422, the supporting effect of the first panel 410 on the second panel 420 in the support plate 40 is strengthened. By fitting the first panel 410 of the support plate 40 on the second mounting portion 126, and the second panel 420 of the support plate 40 is fitted on the second surface of the end plate 30, the strength of the battery module end plate 30 is enhanced, the reliability of the mechanical structure of the battery module is improved, over-assembly is reduced, the installation space of the low-voltage output pole is avoided to be occupied, and the busbar is avoided to pull and deform the battery cell pole.

[0045] For another example, the first panel 410 may be provided with a plurality of first convex ribs 412, and the second panel 420 may be provided with a plurality of second convex ribs 422. The first convex ribs 412 are arranged at intervals on the first panel 410, and the first convex ribs 412 and the first panel 410 are integrally formed; the second convex ribs 422 are arranged at intervals on the second panel 420, and the second convex ribs 422 and the second panel are integrally formed. The first convex ribs 412 are connected to the second convex ribs 422 in a one-to-one correspondence, thereby further strengthening the supporting effect of the first panel 410 on the second panel 420 in the support plate 40. By fitting the first panel 410 of the support plate 40 on the second mounting portion 126, the second panel 420 of the support plate 40 is fitted on the second surface of the end plate 30, thereby further enhancing the strength of the battery module end plate 30, and improving the reliability of the battery module mechanical structure.

[0046] In one embodiment, Figure 1 and Figure 2 As shown, the first panel 410 is provided with at least two first convex ribs 412 parallel to each other, and the first through hole 414 is provided between adjacent first convex ribs 412 .

[0047] The first panel 410 includes a first surface and a second surface, and the first surface of the first panel 410 is opposite to the second surface. The first surface of the first panel 410 is fitted and arranged on the second mounting portion 126, and the second surface of the first panel 410 is provided with two first convex ribs 412. The second panel 420 includes a first surface and a second surface, and the first surface of the second panel 420 is opposite to the second surface. The first surface of the second panel 420 is fitted and arranged on the second surface of the end plate 30, and the second surface of the second panel 420 is provided with two second convex ribs 422.

[0048] For example, one of the first ribs 412 is disposed adjacent to the first side of the first surface of the first panel 410 , and the other first rib 412 is disposed adjacent to the second side of the first surface of the first panel 410 . The first side of the first surface is opposite to the second side. The first through hole 414 is located between the two first ribs 412 .

[0049] One of the second convex ribs 422 is disposed adjacent to the first side of the first surface of the second panel 420, and the other second convex rib 422 is disposed adjacent to the second side of the first surface of the second panel 420, and the first side of the second surface is opposite to the second side. One of the first convex ribs 412 is connected to the corresponding second convex rib 422, and the other first convex rib 412 is connected to the corresponding second convex rib 422, thereby strengthening the supporting effect of the first panel 410 on the second panel 420 in the support plate 40, and by fitting the first panel 410 of the support plate 40 to the second mounting portion 126, the second panel 420 of the support plate 40 is fitted to the second surface of the end plate 30, thereby strengthening the strength of the battery module end plate 30, improving the reliability of the battery module mechanical structure, reducing over-assembly, avoiding squeezing the installation space of the low-voltage output pole, and avoiding the busbar from pulling and deforming the battery cell pole.

[0050] In one embodiment, Figure 3 and Figure 4 As shown, the end plate 30 reinforcement structure also includes a first locking member 50; the first panel 410 is provided with a first through hole 414, and the second mounting portion 126 is provided with a second through hole 128; the first locking member 50 passes through the first through hole 414 and the second through hole 128 to lock the support plate 40 in the second mounting portion 126.

[0051] The first locking member 50 may be a first bolt. The size of the first through hole 414 is greater than or equal to the size of the second through hole 128. For example, the second through hole 128 is provided with an internal thread, the first bolt is passed through the first through hole 414 and the second through hole 128, and the external thread of the first bolt cooperates with the internal thread of the second through hole 128 to achieve locking of the support plate 40 to the second mounting portion 126. For another example, the first locking member 50 may be composed of a first bolt and a first nut, after the first bolt is passed through the first through hole 414 and the second through hole 128, the first bolt is locked by the first nut, thereby achieving locking of the support plate 40 to the second mounting portion 126.

[0052] Exemplarily, the first through hole 414 is an annular hole structure. For example, the first through hole 414 can be a runway-type hole structure. The size of the first through hole 414 is larger than the size of the second through hole 128. Then, the first locking member 50 is passed through the first through hole 414 and the second through hole 128. When the support plate 40 is locked in the second mounting portion 126, it is convenient to adjust the installation and positioning of the support plate 40. At the same time, the support plate 40 is easy to disassemble and assemble, which facilitates the replacement and maintenance of the support plate 40, and has strong maintainability in the later stage.

[0053] In one embodiment, Figure 4 As shown, the end plate 30 reinforcement structure also includes a plurality of second locking members 60; the end plate 30 is provided with a plurality of third through holes 310, and the first mounting portion 122 is provided with a plurality of fourth through holes 124; each fourth through hole 124 corresponds one by one to each third through hole 310; each second locking member 60 passes through the corresponding third through hole 310 and the corresponding fourth through hole 124 to lock the end plate 30 on the first mounting portion 122.

[0054] The number of the second locking members 60, the third through holes 310 and the fourth through holes 124 is the same. For example, the number of the second locking members 60 is 2, the number of the third through holes 310 and the number of the fourth through holes 124 are both 2, one of the third through holes 310 is disposed adjacent to the first side of the end plate 30, the other third through hole 310 is disposed adjacent to the second side of the end plate 30, one of the fourth through holes 124 corresponds to one of the third through holes 310, and the other fourth through hole 124 corresponds to the other third through hole 310. For another example, the number of the second locking members 60 is 3, the number of the third through holes 310 and the number of the fourth through holes 124 are both 3, the first third through hole 310 is arranged adjacent to the first side of the end plate 30, the second third through hole 310 is arranged adjacent to the second side of the end plate 30, and the third third through hole 310 is arranged in the middle of the end plate 30; then the first fourth through hole 124 corresponds to the first third through hole 310, the second fourth through hole 124 corresponds to the second third through hole 310, and the third fourth through hole 124 corresponds to the third third through hole 310.

[0055] In one example, the second locking member 60 may be a second bolt. The size of the third through hole 310 is greater than or equal to the size of the fourth through hole 124. The fourth through hole 124 is provided with an internal thread, and the second bolt is passed through the corresponding third through hole 310 and the corresponding fourth through hole 124, and the external thread of the second bolt cooperates with the internal thread of the corresponding fourth through hole 124 to achieve locking of the end plate 30 on the first mounting portion 122. For another example, the second locking member 60 may be composed of a second bolt and a second nut, and after the second bolt is passed through the corresponding third through hole 310 and the fourth through hole 124, the corresponding second bolt is locked by the second nut, thereby achieving locking of the end plate 30 on the first mounting portion 122.

[0056] Exemplarily, the third through hole 310 can be a runway-shaped hole structure, and then the second locking member 60 is passed through the corresponding third through hole 310 and the fourth through hole 124. When the end plate 30 is locked in the first mounting portion 122, it is convenient to adjust the installation and positioning of the end plate 30, and it is also convenient to disassemble and assemble the end plate 30, and it is convenient to replace and repair the end plate 30, and the later maintainability is strong.

[0057] In one embodiment, Figure 2 As shown, the second mounting portion 126 is adjacent to the center of the first mounting portion 122 .

[0058] The first mounting portion 122 is in a strip shape, and the second mounting portion 126 is disposed adjacent to the center of the first mounting portion 122. For example, the second mounting portion 126 is located at the center of the first mounting portion 122, and after the end plate 30 is mounted on the first mounting portion 122 and the support plate 40 is mounted on the second mounting portion 126, the mounting position of the support plate 40 is adjacent to the middle position of the end plate 30, thereby reducing the deformation of the middle part of the end plate 30, enhancing the strength of the battery module end plate 30, improving the reliability of the mechanical structure of the battery module, reducing over-assembly, avoiding occupying the installation space of the low-voltage output pole, and avoiding the busbar from pulling and deforming the battery cell pole.

[0059] In one embodiment, Figure 4 As shown, the first panel 410 is perpendicular to the second panel 420 .

[0060] The end plate 30 is installed on the first mounting portion 122, and the end plate 30 is perpendicular to the second support area 120; the first panel 410 of the support plate 40 is attached to the second mounting portion 126, and the second panel 420 of the support plate 40 is attached to the second surface of the end plate 30, and the first panel 410 of the support plate 40 is perpendicular to the second panel 420 of the support plate 40, that is, the support plate 40 is an L-shaped structure as a whole, which can strengthen the structure of the end plate 30 and reduce the risk of deformation of the end plate 30.

[0061] In one embodiment, Figure 5As shown, a battery module is also provided, including a base plate 10, a plurality of columns of battery cell groups 20 and an end plate 30 reinforcement structure as described above; the base plate 10 includes a first support area 110 and a second support area 120, the first support area 110 is used to support each column of battery cell groups 20; the second support area 120 is provided with a first mounting portion 122 and a second mounting portion 126; the first mounting portion 122 is used to fix the end plate 30, and the second mounting portion 126 is used to fix the support plate 40.

[0062] Among them, the specific description of the reinforcement structure of the bottom plate 10, the battery cell group 20, and the end plate 30 can refer to the specific description of the reinforcement structure of the bottom plate 10, the battery cell group 20, and the end plate 30 in the above embodiment, which will not be repeated here.

[0063] Specifically, the bottom plate 10 is divided into a first support area 110 and a second support area 120, the first support area 110 is used to support a plurality of columns of battery cell groups 20; the second support area 120 is provided with a first mounting portion 122 and a second mounting portion 126; the end plate 30 reinforcement structure includes an end plate 30 and a support plate 40; the end plate 30 is fixedly arranged at the first mounting portion 122, and the first surface of the end plate 30 is adhered to each column of battery cell groups 20; the support plate 40 is fixedly arranged at the second mounting portion 126, and the support plate 40 includes a first panel 410 and a second panel 420, the first panel 410 is adhered to the second mounting portion 126, and the second panel 420 is adhered to the second surface of the end plate 30, thereby achieving reinforcement of the structure of the end plate 30 and reducing the risk of deformation of the end plate 30. The present application sets the end plate 30 on the first mounting portion 122 of the base plate 10, thereby providing a channel for the routing of each column of battery cell groups 20 and dissipating heat for each column of battery cell groups 20, constraining each column of battery cell groups 20 together, and effectively controlling the thermal expansion of the battery cells; by setting the support plate 40 on the second mounting portion 126 of the base plate 10, and making the first panel 410 of the support plate 40 affixed to the second mounting portion 126, and the second panel 420 affixed to the second surface of the end plate 30, the strength of the battery module end plate 30 is enhanced, the reliability of the battery module mechanical structure is improved, over-assembly is reduced, the installation space of the low-voltage output pole is avoided, and the bus column is avoided from pulling and deforming the battery cell pole. At the same time, the support plate 40 and the end plate 30 are easy to disassemble, and the later maintainability is strong.

[0064] In one embodiment, Figure 3 and Figure 5 As shown, the battery module also includes a first side plate 70 and a second side plate 80; the first side end of the end plate 30 is provided with a first step, and the second side end of the end plate 30 is provided with a second step; the first side plate 70 is installed on the first step, and the second side plate 80 is installed on the second step.

[0065] The first side plate 70 and the second side plate 80 may be used to constrain and limit the sides of the battery cell group 20 .

[0066] A first step is provided at the first side end of the end plate 30, and the first step forms a snap-in position. A second step is provided at the second side end of the end plate 30, and the second step forms a snap-in position. The end of the first side plate 70 is snap-connected to the first step, and the end of the second side plate 80 is snap-connected to the second step, thereby enclosing a space for installing and constraining each column of battery cell groups 20, among the first side plate 70, the second side plate 80, the bottom plate 10 and the end plate 30.

[0067] It should be noted that the battery module may also include components such as a heat insulation plate, and a specific battery module may include more components than those described in the above embodiments, or combine certain components, or have a different arrangement of components.

[0068] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0069] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the attached claims.

Claims

1. An end plate reinforcement structure, characterized in that: Applied to a battery module, the battery module includes a bottom plate, the bottom plate includes a first support area and a second support area, the first support area is used to support a plurality of columns of battery cell groups; the second support area is provided with a first mounting portion and a second mounting portion; the end plate reinforcement structure includes: An end plate, the end plate is fixedly mounted on the first mounting portion, and a first surface of the end plate is attached to each column of the battery cell groups; A support plate, wherein the support plate is fixedly disposed on the second mounting portion, and the support plate comprises a first panel and a second panel, wherein the first panel is attached to the second mounting portion, and the second panel is attached to the second surface of the end plate.

2. The end plate reinforcement structure according to claim 1, characterized in that: It also includes a convex rib group, which includes a first convex rib and a second convex rib. The first convex rib is arranged on the first panel, and the second convex rib is arranged on the second panel. The first convex rib is connected to the corresponding second convex rib.

3. The end plate reinforcement structure according to claim 2, characterized in that: It also includes a first locking member; the first panel is provided with a first through hole, and the second mounting portion is provided with a second through hole; The first locking member passes through the first through hole and the second through hole to lock the support plate on the second mounting portion.

4. The end plate reinforcement structure according to claim 3, characterized in that: The first panel is provided with at least two first convex ribs parallel to each other, and the first through hole is provided between adjacent first convex ribs.

5. The end plate reinforcement structure according to claim 3, characterized in that: The first through hole is an annular hole structure.

6. The end plate reinforcement structure according to claim 1, characterized in that: It also includes a plurality of second locking members; the end plate is provided with a plurality of third through holes, and the first mounting portion is provided with a plurality of fourth through holes; each of the fourth through holes corresponds to each of the third through holes one by one; Each of the second locking members passes through the corresponding third through hole and the corresponding fourth through hole to lock the end plate on the first mounting portion.

7. The end plate reinforcement structure according to any one of claims 1 to 6, characterized in that: The second mounting portion is adjacent to a center position of the first mounting portion.

8. The end plate reinforcement structure according to claim 7, characterized in that: The first panel is perpendicular to the second panel.

9. A battery module, characterized in that: It comprises a bottom plate, a plurality of battery cell groups and an end plate reinforcement structure as claimed in any one of claims 1 to 8; The bottom plate includes a first supporting area and a second supporting area, the first supporting area is used to support the battery cell groups in each column; the second supporting area is provided with a first mounting portion and a second mounting portion; The first mounting portion is used to fix the end plate, and the second mounting portion is used to fix the support plate.

10. A battery module according to claim 9, characterized in that: It also includes a first side plate and a second side plate; the first side end of the end plate is provided with a first step, and the second side end of the end plate is provided with a second step; the first side plate is installed on the first step, and the second side plate is installed on the second step.

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