Battery module end plate and battery module

Abstract

The utility model provides a battery module end plate and a battery module, the battery module end plate comprises an end plate main body, the end plate main body comprises a first end plate and a second end plate, the first end plate and the second end plate are oppositely arranged along a first direction, the first end plate and the second end plate are respectively provided with a first surface and a second surface which are oppositely arranged along a second direction perpendicular to the first direction, at least part of the first surface is a mounting surface, and the mounting surface is arranged in a plane shape; part of the output pole base is at least erected on the mounting surface of the first end plate and / or the second end plate in the first direction, and the other part of the output pole base extends in the second direction and is mechanically connected with the first end plate and / or the second end plate. And the probability of cracking of the end plate main body and the output electrode base caused by extrusion of the battery cell module is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of batteries, and particularly to a battery module end plate and a battery module. Background Art

[0002] In a battery module, due to repeated charging and discharging, the battery cells will expand. The expansion of the battery cells will cause many problems, thus affecting the cycle life of the battery cells. Therefore, an end plate is usually provided to limit the expansion and deformation of the battery cells. In the related art, to cooperate with some protruding structures on the surface of the battery cells, the end plate is provided with avoidance grooves / notches, and an output pole assembly is designed at the avoidance grooves / notches. The output pole assembly is used to fix the output bus bar of the battery module. However, the avoidance grooves / notches will damage the integrity of the end plate, increase the pressure on the end plate and the battery cells per unit area during the expansion process of the battery cells, increase the high stress risk area, and increase the risk of end plate cracking and deformation of the output pole assembly due to extrusion. Summary of the Utility Model

[0003] Embodiments of the present application provide a battery module end plate and a battery module to solve or at least partially solve the deficiencies existing in the above background art.

[0004] In a first aspect, embodiments of the present application provide a battery module end plate, including:

[0005] An end plate body, including a first end plate and a second end plate. The first end plate and the second end plate are arranged opposite to each other along a first direction. The first end plate and the second end plate both have a first surface and a second surface arranged opposite to each other along a second direction. At least a part of the first surface is an installation surface, and the installation surface is arranged in a planar shape. The first direction and the second direction are perpendicularly arranged; and

[0006] An output pole base, at least a part of the output pole base is arranged on the installation surfaces of the first end plate and / or the second end plate along the first direction, and the other part extends along the second direction and is mechanically connected to the first end plate and / or the second end plate.

[0007] In an optional embodiment of the present application, the heights of the first end plate and the second end plate along the second direction are equal.

[0008] In an optional embodiment of the present application, the output pole base includes a first output pole part and a second output pole part vertically connected to one end of the first output pole part. The first output pole part is arranged on the installation surfaces of the first end plate and the second end plate along the first direction, and the second output pole part extends along the second direction and is mechanically connected to the second end plate. Among them, the second output pole part is located on the side of the second end plate away from the first end plate.

[0009] In an alternative embodiment of the present application, the output pole base includes a first limiting portion and a second limiting portion. The first limiting portion is provided on opposite sides of the first output pole portion and extends away from the end plate body along a second direction.

[0010] The second limiting portion is provided on opposite sides of the second output pole portion and extends away from the end plate body along a first direction.

[0011] In an alternative embodiment of the present application, the output pole base includes a first output pole portion and a second output pole portion perpendicularly connected to one end of the first output pole portion. The first output pole portion is arranged on the mounting surface of the first end plate along a first direction, and the second output pole portion extends along a second direction and is mechanically connected to the second end plate. Among them, the second output pole portion is located on the side of the second end plate close to the first end plate.

[0012] In an alternative embodiment of the present application, the output pole base includes a first limiting portion. The first limiting portion is provided on opposite sides of the first output pole portion and extends away from the end plate body along a second direction.

[0013] In an alternative embodiment of the present application, at least one assembly hole and a fastener corresponding to the assembly hole one by one are provided on the second output pole portion. The fastener passes through the assembly hole along a first direction.

[0014] The second end plate is provided with at least one communication hole. The communication hole corresponds to the fastener one by one along a first direction. The fastener passes through the assembly hole and the communication hole along a first direction to fix the second output pole portion on the second end plate.

[0015] In an alternative embodiment of the present application, the assembly hole includes two opposite first hole walls and two second hole walls. One end of one second hole wall is respectively connected to one end of the two opposite first hole walls, and the other end of the other second hole wall is respectively connected to the other end of the two opposite first hole walls. The two ends of the second hole wall are smoothly connected to the first hole wall.

[0016] In an alternative embodiment of the present application, the number of assembly holes is at least two. At least two assembly holes extend along a second direction and / or a third direction. The third direction intersects with the second direction and the first direction respectively.

[0017] In an alternative embodiment of the present application, a metal insert is embedded in the first output pole portion along a second direction, and a part of the metal insert protrudes from the first output pole portion.

[0018] In an alternative embodiment of the present application, the part of the metal insert protruding from the first output pole portion has a preset height along a second direction. The preset height is 0.3 mm - 0.5 mm.

[0019] In an optional embodiment of the present application, the battery module end plate further includes two columns, one column is connected to one end of the first end plate and the second end plate, and the other column is connected to the other end of the first end plate and the second end plate;

[0020] The height of the column along the second direction is equal to the height of the first end plate and the second end plate along the second direction.

[0021] In a second aspect, an embodiment of the present application provides a battery module, including:

[0022] A battery cell module;

[0023] The battery module end plates as provided in any of the above embodiments, and two battery module end plates are respectively fixed on opposite sides of the battery cell module.

[0024] The battery module end plate provided by the embodiment of the present application has at least the following beneficial effects: The battery module end plate includes an end plate main body and an output pole base arranged on the end plate main body. The end plate main body includes a first end plate, a second end plate and two columns. Both the first end plate and the second end plate have a first surface and a second surface that are oppositely arranged along the second direction. The first surface is a plane, that is, the end plate main body is not provided with an avoidance groove / notch, so that the forces received by the side of the end plate main body facing the battery cell module are the same, reducing the probability of cracking of the end plate main body caused by being squeezed by the battery cell module. Part of the output pole base is arranged on the first surface of the first end plate and / or the second end plate, and the other part is mechanically connected to the first end plate and / or the second end plate, that is, the output pole base will not be squeezed by the battery cell module, reducing the probability of rupture of the output pole base caused by being squeezed, and further reducing the probability of affecting the output busbar due to the rupture of the output pole base, thereby causing a short circuit of the battery module. Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions in this embodiment, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 It is a schematic structural diagram of the battery module end plate provided by an embodiment of the present application.

[0027] Figure 2 It is a top view schematic diagram of the battery module end plate provided by an embodiment of the present application.

[0028] Figure 3A 、 3B It is a schematic structural diagram of the output pole base provided by an embodiment of the present application.

[0029] Figure 4 Explosion schematic diagram of the end plate of the battery module provided by an embodiment of the present application.

[0030] Figure 5 Structural schematic diagram of the end plate of the battery module provided by another embodiment of the present application.

[0031] Figure 6 Explosion schematic diagram of the end plate of the battery module provided by another embodiment of the present application.

[0032] Reference numerals: 100, 200 - end plates of the battery module; 10 - end plate body; 101 - first end plate; 102 - second end plate; 1021 - communication hole; 103 - column; 104 - first resistance plate; 105 - second resistance plate; 106 - cavity; 107 - first surface; 107A - mounting surface; 20 - output pole base; 201 - first output pole part; 2011 - metal insert; 202 - second output pole part; 2021 - assembly hole; 20211 - first hole wall; 20212 - second hole wall; 2022 - fastener; 203 - first limiting part; 204 - second limiting part. Detailed implementation manners

[0033] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0034] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless otherwise specifically defined.

[0035] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a connection that allows mutual communication; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0036] In the present application, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over", and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath", and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0037] Embodiments of the present application provide a battery module end plate and a battery module. The following will be described in detail respectively. It should be noted that the description order of the following embodiments does not limit the preferred order of the embodiments.

[0038] Please refer to Figure 1 、 Figure 2 and Figure 4 , embodiments of the present application provide a battery module end plate 100, including:

[0039] An end plate main body 10 and an output pole base 20 provided on the end plate main body 10. The two end plate main bodies 10 can be respectively provided on opposite sides of the battery cell module. The end plate main body 10 includes a first end plate 101 and a second end plate 102. The first end plate 101 and the second end plate 102 are oppositely arranged along the first direction X.

[0040] In the related art, usually an avoidance groove / notch is formed on the end plate to adapt to some protruding structures on the surface of the battery cell, but the avoidance groove / notch causes the end plate to crack at the avoidance groove / notch under the expansion effect of the battery cell module.

[0041] Please refer to Figure 1 、 Figure 2 and Figure 4, in the embodiments of the present application, both the first end plate 101 and the second end plate 102 have a first surface 107 and a second surface that are oppositely arranged along a second direction Y perpendicular to the first direction X. At least a part of the first surface 107 is an installation surface 107A, and the installation surface 107A is arranged in a planar shape.

[0042] Among them, a part of the output pole base 20 can overlap on the installation surface 107A, that is, no avoidance groove / notch is provided on the first end plate 101 and the second end plate 102. The forces received by the side of the end plate body 10 facing the battery cell module are the same, reducing the stress risk area and reducing the probability of the end plate body 10 cracking due to being squeezed by the battery cell module.

[0043] In the related art, the output pole assembly is usually arranged in the avoidance groove / notch of the end plate. When the end plate cracks due to being squeezed by the battery cell module, the output pole assembly located at the avoidance groove / notch is also easily squeezed and broken. However, in the embodiments of the present application, no avoidance groove / notch is provided. On the premise that the installation surface 107A is a plane, a part of the output pole base 20 of the embodiments of the present application overlaps on the installation surface 107A of the first end plate 101 and / or the second end plate 102, and the other part is mechanically connected to the first end plate 101 and / or the second end plate 102. The end plate body 10 will not break, and it will not affect the integrity of the output pole base 20 either. At the same time, since a part of the output pole base 20 overlaps on the first end plate 101 and / or the second end plate 102 and will not be in direct contact with the battery cell module, the output pole base 20 will not be squeezed by the battery cell module, reducing the probability of the output pole base 20 being squeezed and broken, and further reducing the probability of affecting the output busbar due to the breakage of the output pole base, thereby causing a short circuit in the battery module.

[0044] In some embodiments of the present application, the entire first surface 107 is a plane; specifically, the first surface 107 and the second surface are relatively parallel, and both the first surface 107 and the second surface are planes.

[0045] Please refer to Figure 2 , in some embodiments of the present application, the battery module end plate 100 further includes two columns 103. One column 103 is connected to one end of the first end plate 101 and the second end plate 102, and the other column 103 is connected to the other end of the first end plate 101 and the second end plate 102. The two columns 103 are oppositely arranged along a third direction Z and are respectively arranged at the opposite ends of the first end plate 101 and the second end plate 102. A plurality of first resistance plates 104 are provided between the first end plate 101 and the second end plate 102. The plurality of first resistance plates 104 are arranged along the third direction Z and are perpendicularly connected to the first end plate 101 and the second end plate 102.

[0046] Further, a second resistance plate 105 is also provided between two adjacent first resistance plates 104. The second resistance plate 105 is perpendicularly connected to the first resistance plate 104 and is arranged parallel to the first end plate 101 and the second end plate 102.

[0047] In one embodiment, multiple first resistance plates 104 and second resistance plates 105 are arranged in a grid pattern between the first end plate 101 and the second end plate 102, for example, but not limited thereto. The second resistance plate 105 and the first resistance plate 104 can also be inclined relative to the first end plate 101 and the second end plate 102. The second resistance plate 105 and the first resistance plate 104 are used to strengthen the structure of the end plate body 10 to resist the expansion of the battery cell module.

[0048] Further, after multiple first resistance plates 104 and second resistance plates 105 are connected between the first end plate 101 and the second end plate 102, a cavity 106 is formed inside, for example, which has the effects of reducing the overall weight and saving manufacturing costs.

[0049] Specifically, the column 103 is provided with a through hole along the second direction Y for connecting to a battery housing (not shown in the figure).

[0050] In any embodiment of the present application, the heights of the first end plate 101 and the second end plate 102 along the second direction Y are equal, and the heights of the first end plate 101 and the second end plate 102 along the second direction Y are equal to the height of the column 103 along the second direction Y. The first surfaces 107 of the first end plate 101 and the second end plate 102 are flush, that is, the first end plate 101 and the second end plate 102 are not provided with relief grooves / notches. In this way, the forces received by the side of the end plate body 10 facing the battery cell module are the same, reducing the probability of cracking of the end plate body 10 caused by being squeezed by the battery cell module. In the embodiment of the present application, the first direction X is perpendicularly arranged to the second direction Y.

[0051] Please refer to Figure 3A 、 Figure 3B and Figure 4 , in the embodiment of the present application, the output pole base 20 is used to place the output busbar. In one embodiment, the output busbar is, for example, a copper busbar, an aluminum busbar, or a copper-aluminum busbar, etc., but not limited thereto. Part of the output pole base 20 is at least arranged on the first surface 107 of the first end plate 101 and / or the second end plate 102 along the first direction X, and the other part extends along the second direction Y and is mechanically connected to the first end plate 101 and / or the second end plate 102.

[0052] In one embodiment of the present application, the output pole base 20 includes a first output pole portion 201 and a second output pole portion 202 vertically connected to one end of the first output pole portion 201, the first output pole portion 201 is arranged along a first direction X on the mounting surface 107A of the first end plate 101 and the second end plate 102, the second output pole portion 202 extends along a second direction Y and is mechanically connected to the second end plate 102, wherein the second output pole portion 202 is located on the side of the second end plate 102 away from the first end plate 101.

[0053] Specifically, the output pole base 20 is, for example, L-shaped, and the output pole base 20 is, for example, a high-voltage output pole base. One end of the first output pole portion 201 and the second output pole portion 202 are vertically connected.

[0054] In some embodiments, the first end plate 101 is disposed close to the battery cell module, and the second end plate 102 is disposed away from the battery cell module.

[0055] In some embodiments, one end of the first output pole portion 201 away from the second output pole portion 202 is, for example, flush with the first end plate 101 in the second direction Y, to ensure that the first output pole portion 201 does not protrude beyond the first output pole portion 201 and thus affect the battery cell module, thereby preventing the first output pole portion 201 from affecting the function and assembly effect of the end plate body 10 and the battery cell module.

[0056] In this embodiment, the second output pole portion 202 is located on a side of the second end plate 102 away from the first end plate 101 .

[0057] See also Figure 3A , Figure 3B and Figure 4 In one embodiment of the present application, the output pole base 20 further includes a first limiting portion 203 and a second limiting portion 204, wherein the first limiting portion 203 is disposed on opposite sides of the first output pole portion 201 and extends along the second direction Y toward a side away from the end plate body 10;

[0058] The second limiting portions 204 are disposed on two opposite sides of the second output pole portion 202 and extend along the first direction X away from one side of the end plate body 10 .

[0059] Specifically, the first limiting portion 203 and the second limiting portion 204 have the effect of strengthening the structure of the output pole base 20. The output busbar is placed on the first output pole portion 201, and the first limiting portion 203 and the second limiting portion 204 are used to limit the position of the output busbar to prevent the output busbar from rotating at a large angle during the locking process.

[0060] It can be understood that when it is necessary to lock the output busbar to the first output pole part 201, a torque needs to be applied to the output busbar. For example, the output busbar will rotate at a certain angle. When the rotation angle is too large, it is easy to affect the welding position of the output busbar, resulting in the destruction of the weld seam, thereby affecting the assembly effect. The first limiting part 203 and the second limiting part 204 have the function of limiting the torsion when locking the output busbar to ensure the assembly effect.

[0061] Please refer to Figure 3A 、 Figure 3B and Figure 4 In the embodiment of the present application, at least one assembly hole 2021 and a fastener 2022 corresponding to the assembly hole 2021 one by one are provided on the second output pole part 202. The fastener 2022 passes through the assembly hole 2021 along the first direction X to fix the second output pole part 202 to the second end plate 102. Specifically, the fastener 2022 can be a bolt, for example.

[0062] Moreover, the second end plate 102 is provided with at least one communication hole 1021. The communication hole 1021 corresponds to the fastener 2022 one by one along the first direction X. The fastener 2022 passes through the assembly hole 2021 and the communication hole 1021 along the first direction X to fix the connected second output pole part 202 to the second end plate 102.

[0063] Specifically, the communication hole 1021 is adapted to and corresponds to the fastener 2022 one by one, so that the fastener 2022 passes through the assembly hole 2021 and the communication hole 1021, and the second output pole part 202 can be fixed to the second end plate 102.

[0064] In the embodiment of the present application, the assembly hole 2021 includes two opposite first hole walls 20211 and two second hole walls 20212. One end of one second hole wall 20212 is connected to one end of the two opposite first hole walls 20211, and the other is connected to the other end of the two opposite first hole walls 20211. The second hole wall 20212 is smoothly connected to both ends of the first hole wall 20211.

[0065] In one embodiment, the assembly hole 2021 is, for example, an oval hole, which relaxes the installation tolerances of the two fasteners 2022 in the third direction Z and the second direction Y, reducing the production cost and the assembly difficulty.

[0066] In the embodiment of the present application, the number of the assembly holes 2021 is at least two. At least two assembly holes 2021 extend along the second direction Y and / or the third direction Z. The third direction Z intersects the second direction Y and the first direction X respectively. In the embodiment of the present application, the third direction Z is perpendicular to the second direction Y, and the third direction Z is perpendicular to the first direction X.

[0067] In one embodiment, the number of assembly holes 2021 is, for example, two, and the number of fasteners 2022 is also two. One of the assembly holes 2021 extends along the third direction Z on the second output pole portion 202, and the other assembly hole 2021 extends along the second direction Y on the second output pole portion 202, relaxing the installation tolerances of the two fasteners 2022 in the third direction Z and the second direction Y, reducing the production cost and the assembly difficulty. Herein, the third direction Z is, for example, perpendicular to the second direction Y, and the third direction Z is, for example, perpendicular to the first direction X.

[0068] Further, multiple assembly holes 2021 may extend along the third direction Z simultaneously, may extend along the second direction Y simultaneously, or may extend towards the third direction Z and the second direction Y respectively, which is specifically subject to the actual application and is not limited in this application.

[0069] In the embodiment of this application, a metal insert 2011 is embedded along the second direction Y in the first output pole portion 201, and the metal insert 2011 protrudes partially along the second direction Y from the first output pole portion 201. The metal insert 2011 is used to lock the output busbar and lock the output busbar to the output pole base 20.

[0070] Specifically, the metal insert 2011 is, for example, brass or stainless steel, but is not limited thereto, and is specifically subject to the actual application.

[0071] Further, the portion of the metal insert 2011 protruding from the first output pole portion 201 has a preset height along the second direction Y, and the preset height is 0.3 mm - 0.5 mm, avoiding crushing the output pole base 20 during the assembly of the metal insert 2011 and the output busbar, thereby affecting the electrical conductivity.

[0072] Specifically, the first output pole portion 201 is provided with a connection hole along the second direction Y, and the metal insert 2011 is fixedly arranged in the connection hole and is used in cooperation with the metal insert 2011 to lock the output busbar.

[0073] Please refer to Figure 5 and Figure 6, in another embodiment of the present application, a battery module end plate 200 is provided, including: an end plate main body 10 and an output pole base 20. The end plate main body 10, the assembly hole 2021, the fastener 2022, and the metal insert 2011 are all the same as the structures in the above embodiments. The difference lies in that the output pole base 20 in another embodiment of the present application includes a first output pole portion 201 and a second output pole portion 202 vertically connected to one end of the first output pole portion 201. The first output pole portion 201 is laid on the first surface 107 of the first end plate 101 along the first direction X, and the second output pole portion 202 extends along the second direction Y and is mechanically connected to the second end plate 102, where the second output pole portion 202 is located on the side of the second end plate 102 close to the first end plate 101. And the output pole base 20 only includes a first limiting portion 203, and the first limiting portion 203 is provided on the opposite sides of the first output pole portion 201 and extends along the second direction Y to the side away from the end plate main body 10, and no second limiting portion 204 is provided on the opposite sides of the second output pole portion 202.

[0074] Specifically, the output pole base 20 is, for example, in an L shape, and one end of the first output pole portion 201 and the second output pole portion 202 are vertically connected. The first output pole portion 201 is laid on the first surface 107 of the first end plate 101 along the first direction X. The first surface 107 is a plane. One end of the first output pole portion 201 away from the second output pole portion 202 is, for example, flush with the first end plate 101 in the second direction Y, ensuring that the first output pole portion 201 will not protrude from the first output pole portion 201 so as not to affect the battery cell module and avoid the first output pole portion 201 affecting the functions and assembly effects of the end plate main body 10 and the battery cell module. And, the second output pole portion 202 is provided on the side of the second end plate 102 close to the first end plate 101 and is mechanically connected to the second end plate 102, reducing the volume of the battery module end plate 100.

[0075] In any embodiment of the present application, after the output busbar is locked to the output pole base 20, a protective cover needs to be provided. The protective cover is assembled with the limiting portion 203 to protect the output busbar and prevent the output busbar from being exposed.

[0076] In a second aspect, the present embodiment provides a battery module, including:

[0077] A battery cell module;

[0078] The battery module end plate 100 / 200 provided in any of the above embodiments, and two battery module end plates 100 are fixed on opposite sides of the battery cell module.

[0079] In summary, a battery module end plate and a battery module provided in this embodiment at least have the following working processes or principles: The battery module end plate includes an end plate main body 10 and an output pole base 20 provided on the end plate main body 10. The end plate main body 10 includes a first end plate 101, a second end plate 102, and two columns 103. The first end plate 101 and the second end plate 102 are oppositely arranged along the first direction X. One column 103 is connected to one end of the first end plate 101 and the second end plate 102, and the other column 103 is connected to the other end of the first end plate 101 and the second end plate 102. Both the first end plate 101 and the second end plate 102 have a first surface 107 and a second surface that are oppositely arranged along the second direction Y perpendicular to the first direction X. The first surface 107 is a plane. The heights of the first end plate 101 and the second end plate 102 along the second direction Y are equal, and the first end plate 101 and the second end plate 102 are equal to the height of the column 103 along the second direction Y. The end plate main body 10 is not provided with an avoidance groove / notch, so that the forces received by the side of the end plate main body 10 facing the battery cell module are the same, reducing the probability of cracking of the end plate main body 10 caused by being squeezed by the battery cell module. Part of the output pole base 20 is erected on the first surface 107 of the first end plate 101 and / or the second end plate 102, and the other part is mechanically connected to the first end plate 101 and / or the second end plate 102, that is, the output pole base 20 will not be squeezed by the battery cell module, reducing the probability of rupture of the output pole base 20 caused by being squeezed, and further reducing the probability of affecting the output bus bar due to the rupture of the output pole base, thereby causing a short circuit of the battery module.

[0080] In the above embodiments, the descriptions of each embodiment have their own emphases. For the parts not detailed in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0081] The above has introduced in detail a battery module end plate and a battery provided in this embodiment. Specific examples are used in this article to elaborate on the principle and implementation manner of this application. The description of the above embodiments is only used to help understand the method and its core idea of this application; at the same time, for those skilled in the art, according to the idea of this application, there will be changes in the specific implementation manner and application scope. In summary, the content of this specification should not be construed as a limitation to this application.

Claims

1. A battery module end plate, characterized in that: include: The end plate body comprises a first end plate and a second end plate, wherein the first end plate and the second end plate are arranged opposite to each other along a first direction, and each of the first end plate and the second end plate has a first surface and a second surface arranged opposite to each other along a second direction, at least a part of the first surface is a mounting surface, and the mounting surface is arranged in a plane shape, and the first direction and the second direction are arranged perpendicularly; and The output pole base, part of which is at least laid on the mounting surface of the first end plate and / or the second end plate along the first direction, and the other part extends along the second direction and is mechanically connected to the first end plate and / or the second end plate.

2. The battery module end plate according to claim 1, characterized in that: The first end plate and the second end plate have the same height along the second direction.

3. The battery module end plate according to claim 2, characterized in that: The output pole base includes a first output pole portion and a second output pole portion vertically connected to one end of the first output pole portion, the first output pole portion is arranged on the mounting surfaces of the first end plate and the second end plate along the first direction, the second output pole portion extends along the second direction and is mechanically connected to the second end plate, wherein the second output pole portion is located on a side of the second end plate away from the first end plate.

4. The battery module end plate according to claim 3, characterized in that: The output pole base includes a first limiting portion and a second limiting portion, wherein the first limiting portion is disposed on two opposite sides of the first output pole portion and extends along the second direction toward a side away from the end plate body; The second limiting portions are arranged at two opposite sides of the second output pole portion and extend along the first direction toward a side away from the end plate body.

5. The battery module end plate according to claim 2, characterized in that: The output pole base includes a first output pole portion and a second output pole portion vertically connected to one end of the first output pole portion, the first output pole portion is arranged on the mounting surface of the first end plate along the first direction, the second output pole portion extends along the second direction and is mechanically connected to the second end plate, wherein the second output pole portion is located on a side of the second end plate close to the first end plate.

6. The battery module end plate according to claim 5, characterized in that: The output pole base includes a first limiting portion, which is disposed on two opposite sides of the first output pole portion and extends along the second direction toward a side away from the end plate body.

7. The battery module end plate according to any one of claims 3 to 6, characterized in that: The second output pole portion is provided with at least one assembly hole and a fastener corresponding to the assembly hole one by one, and the fastener penetrates the assembly hole along the first direction; The second end plate is provided with at least one connecting hole, and the connecting hole corresponds to the fastener one by one along the first direction. The fastener penetrates the assembly hole and the connecting hole along the first direction to fix the second output pole portion on the second end plate.

8. The battery module end plate according to claim 7, characterized in that: The assembly hole includes two opposite first hole walls and two second hole walls, wherein two ends of one of the second hole walls are respectively connected to one end of the two opposite first hole walls, and two ends of the other second hole wall are respectively connected to the other end of the two opposite first hole walls, and the two ends of the second hole wall are smoothly connected to the first hole wall.

9. The battery module end plate according to claim 8, characterized in that: The number of the assembly holes is at least two, and at least two of the assembly holes extend along the second direction and / or the third direction, and the third direction intersects with the second direction and the first direction respectively.

10. The battery module end plate according to any one of claims 3 to 6, characterized in that: The first output pole portion is embedded with a metal nesting along the second direction, and the metal nesting portion protrudes from the first output pole portion.

11. The battery module end plate according to claim 10, characterized in that: The portion of the metal nesting protruding from the first output pole portion has a preset height along the second direction, and the preset height is 0.3 mm-0.5 mm.

12. The battery module end plate according to any one of claims 1 to 6, characterized in that: The battery module end plate further comprises two columns, one of which is connected to one end of the first end plate and the second end plate, and the other of which is connected to the other end of the first end plate and the second end plate; A height of the column along the second direction is equal to a height of the first end plate and the second end plate along the second direction.

13. A battery module, characterized in that: include: Battery cell module; The battery module end plate according to any one of claims 1 to 12 is fixed to opposite sides of the battery cell module.

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