Battery module mounting plate and battery module

Abstract

This invention belongs to the field of battery technology and discloses a battery module fixing end plate and a battery module. The battery module fixing end plate includes an end plate body with fixing structures at both ends and a reinforcing structure on one side. The reinforcing structure includes a plurality of reinforcing grooves along the Z direction, which are aligned in an array along the X and Y directions. At least one receiving groove is provided in the middle of one side of the end plate body along the Y direction. The groove walls at two opposite ends along the Y direction of the receiving groove have coaxial through holes for inserting reinforcing rods. The reinforcing structures are arranged adjacent to each other on both sides of the receiving groove. The battery module including the above-mentioned battery module fixing end plate can increase the support strength in the middle of the end plate body, thereby reducing the probability of deformation or even breakage of the end plate body in the middle and reducing the risk of damage to the end plate body.

Description

Technical Field

[0001] This invention relates to the field of battery technology, and in particular to a battery module fixing end plate and a battery module. Background Technology

[0002] A power battery is a power source that provides power to tools, often referring to the batteries that power electric vehicles, electric trains, electric bicycles, and golf carts. A battery module is a structure that stacks several batteries together for easy fixing and transportation. Typically, several batteries are placed on a base plate and then secured by end plates on the sides.

[0003] In current endplate structures, such as the battery endplate provided in application number CN202222180897.3, the endplate body has a honeycomb structure in the thickness direction to enhance structural strength and reduce weight; it also improves structural stability. The endplate fixing holes are located on the right and left sides of the body. However, when using similar endplates, force needs to be applied to both sides of the endplate through the fixing holes during battery module fixing. At this time, the internal battery pack presses against the endplate from the inside out, which can easily cause deformation or even breakage in the middle of the endplate, damaging the endplate and making it impossible to secure the battery. Summary of the Invention

[0004] One of the objectives of this invention is to provide a battery module fixing end plate that strengthens the support in the middle of the end plate and reduces the risk of end plate damage.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A battery module fixing end plate includes an end plate body. A reinforcing structure is provided on one side of the end plate body. The reinforcing structure includes a plurality of reinforcing grooves with a depth direction of Z. The plurality of reinforcing grooves are arranged in an array along the X and Y directions. Fixing structures are provided at both ends of the end plate body. At least one receiving groove is provided in the middle of one side of the end plate body along the Y direction. The groove wall of the receiving groove at two opposite ends along the Y direction is provided with coaxial through holes to allow the insertion of reinforcing rods. The reinforcing structure is arranged adjacent to each other on both sides of the receiving groove.

[0007] Preferably, the receiving groove is provided with a plurality of U-shaped first reinforcing ribs, which are fixed to the two side walls of the receiving groove and the end plate body to support the reinforcing rod.

[0008] Preferably, a plurality of intersecting second reinforcing ribs are provided in the reinforcing groove adjacent to the receiving groove, and the ends of the second reinforcing ribs are connected to the intersection of the groove walls of the reinforcing groove.

[0009] Preferably, the through hole on at least one side is a threaded hole, and the reinforcing rod is a long screw.

[0010] Preferably, at least two of the reinforcing grooves in the Y direction are provided with third reinforcing ribs, the reinforcing grooves with the third reinforcing ribs are symmetrical to both sides of the receiving groove, and the two third reinforcing ribs are arranged in a T-shape in the reinforcing grooves.

[0011] Preferably, at least two of the reinforcing grooves in the X direction are provided with the third reinforcing rib.

[0012] Preferably, a first notch is also provided, which is located at one end of the through hole.

[0013] Preferably, the fixing structure consists of two first fixing holes on both sides of the end plate body away from the receiving groove, the first fixing holes penetrating the end plate body vertically along the Y direction; the end plate body is provided with fracture grooves on both sides to split the first fixing holes into two segments.

[0014] Preferably, a second notch is also provided, which is located at one end of the first fixing hole.

[0015] Preferably, a plurality of second fixing holes are also provided, which are located on the side wall of the end plate body away from the receiving groove.

[0016] Preferably, the end plate body is provided with limiting components on both sides, which are used to limit the binding strap.

[0017] Preferably, the limiting component includes two limiting protrusions or limiting grooves disposed on both sides of the end plate body away from the receiving groove and spaced apart along the Y direction.

[0018] Preferably, the limiting protrusion or the limiting groove is provided with an inclined guide surface;

[0019] The opposing surfaces of the two limiting protrusions are configured to be opposite to the inclined guide surface so that a limiting space is formed between the two limiting protrusions to limit the binding strap; or, the opposing groove walls of the limiting groove along the Y direction are the inclined guide surface so that the limiting groove forms a limiting space to limit the binding strap.

[0020] Preferably, the system also includes a fixing groove group, which is disposed on either side of the end of the receiving groove and on one side of the reinforcing structure. The fixing groove group includes a first fixing groove, a second fixing groove, and / or a third fixing groove. The first fixing groove is used to fix the CCS assembly, the second fixing groove is used to fix the insulating block, and the third fixing groove is used to fix the wire harness.

[0021] Preferably, the inner wall of the second fixing groove is provided with a limiting guide groove so as to cooperate with the protrusion provided on the insulating block for insertion.

[0022] Preferably, the third fixing groove has a wire-passing hole on its groove wall, so that the external wires can pass through the wire-passing hole and be concentrated in the third fixing groove for binding.

[0023] Preferably, the end plate body is made of aluminum.

[0024] The second objective is to provide a battery module, including the battery module fixing end plate as described above.

[0025] The beneficial effects of this invention are:

[0026] By providing a receiving groove and a through hole on the end plate body, a reinforcing rod can be inserted into the receiving groove. When the oppositely positioned end plate bodies are fixed by a fixing structure, the reinforcing rod in the middle can abut against the end plate body from the middle, thereby increasing the support force on the middle of the end plate body on the opposite side of the battery. This reduces the probability of the end plate body deforming or even breaking in the middle, and lowers the risk of damage to the end plate body. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of the battery module fixing end plate of the present invention;

[0028] Figure 2 This is a front view of one side of the display receiving slot on the fixed end plate of the battery module of the present invention;

[0029] Figure 3 This is a side view of the battery module fixing end plate of the present invention, showing one side of the first fixing groove;

[0030] Figure 4 This is a side view of the battery module fixing end plate of the present invention, showing one side of the second fixing hole.

[0031] In the picture:

[0032] 1. End plate body; 2. Reinforcing groove; 3. Receiving groove; 4. Through hole; 5. First reinforcing rib; 6. Second reinforcing rib; 7. Third reinforcing rib; 8. First fixing hole; 9. Fracture groove; 10. Second fixing hole; 11. Limiting protrusion; 12. First fixing groove; 13. Second fixing groove; 14. Third fixing groove; 15. Wire passage hole; 16. Limiting guide groove; 17. First notch; 18. Second notch. Detailed Implementation

[0033] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0034] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0035] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0036] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0037] In existing technologies, battery modules are made by stacking several batteries together and then clamping them with opposing end plates. When fixing the end plates, a connecting piece is usually used to apply force from both ends of the end plate. As a result, the tension pulls the end plates from both ends toward the batteries clamped between the two end plates, while the batteries push against the end plates in the opposite direction. This can easily cause deformation or even breakage in the middle of the end plate.

[0038] Therefore, as Figure 1-4As shown, this embodiment provides a battery module fixing end plate. The battery module fixing end plate includes an end plate body 1, with fixing structures at both ends of the end plate body 1, and a reinforcing structure on one side of the end plate body 1. The reinforcing structure includes a plurality of reinforcing grooves 2 along the Z direction, and the plurality of reinforcing grooves 2 are arrayed along the X and Y directions. It should be noted here that, as... Figure 1 In the diagram, the X direction represents the length of the end plate body 1, the Y direction represents the width of the end plate body 1, and the Z direction represents the thickness of the end plate body 1. At least one receiving groove 3 is provided along the Y direction at the center of one side of the reinforcing structure of the end plate body 1. Coaxial through holes 4 are provided on the groove walls at two opposite ends of the receiving groove 3 along the Y direction to allow for the insertion of reinforcing rods. The reinforcing structure is arranged adjacent to each other on both sides of the receiving groove 3.

[0039] By providing a receiving groove 3 and a through hole 4 on the end plate body 1, a reinforcing rod can be inserted into the receiving groove 3. This increases the support force on the middle part of the end plate body 1 on the opposite side of the battery when the end plate body 1 is fixed by the fixing structure, thereby strengthening the structural strength of the middle part and reducing the probability of deformation or even breakage of the end plate body 1 in the middle part, thus reducing the risk of damage to the end plate body 1.

[0040] This embodiment will be described in detail below, such as Figure 1-4As shown, the battery module fixing end plate includes an end plate body 1. The material of the end plate body 1 can be, but is not limited to, aluminum. Aluminum reduces the production cost of the end plate and facilitates mass production. After formation, the end plate body 1 can be passivated to slow down corrosion. The end plate body 1 is generally rectangular, and a reinforcing structure is provided on one side of the end plate body 1. Specifically, it can be located on the side away from the battery when the end plate body 1 is fixing the battery. The reinforcing structure includes several reinforcing grooves 2 with a depth direction in the Z direction. The several reinforcing grooves 2 are arrayed along the X and Y directions, thus forming a horizontal array of reinforcing grooves 2 in a horizontal and vertical form on one side of the end plate body 1. The sidewalls of the reinforcing grooves 2 act as horizontal and vertical reinforcing ribs to enhance the structural strength of the end plate body 1. It can be understood that the reinforcing structure in this embodiment can also adopt a honeycomb structure; in order to make the structure more stable, the reinforcing structure is integrally formed with the end plate body 1. To reinforce the middle of the end plate body 1, at least one receiving groove 3 is provided along the Y direction in the middle of one side of the reinforcing structure of the end plate body 1. The groove walls at two opposite ends along the Y direction of the receiving groove 3 are provided with coaxial through holes 4 to allow the insertion of a reinforcing rod; thus, the middle of the end plate body 1 can be supported by inserting a reinforcing rod into the receiving groove 3. Further, at least one through hole 4 is a threaded hole, and the reinforcing rod is a long screw rod to allow for fixing the long screw rod. Further, the end plate body 1 is also provided with a first notch 17, located at the end of one end of the through hole 4. When a long screw rod is used as the reinforcing rod, the first notch 17 can accommodate the end of the long screw rod, preventing the long screw rod from protruding from the end plate body 1; in addition, the first notch 17 also provides operating space for inserting and removing the reinforcing rod. The reinforcing structure is arranged adjacent to each other on both sides of the receiving groove 3, thereby increasing the structural strength of the end plate body 1 on both sides of the receiving groove 3. In this embodiment, two receiving grooves 3 are provided, and the two receiving grooves 3 are arranged adjacent to each other. In other embodiments, the number of receiving grooves 3 can be set according to the specific length, thickness, and other parameters of the end plate body 1.

[0041] The receiving groove 3 is provided with several U-shaped first reinforcing ribs 5 spaced apart along the Y direction. The openings of the U-shaped first reinforcing ribs 5 are the same as the openings of the receiving groove 3. In addition, the U-shaped first reinforcing ribs 5 are fixed to the side walls of the receiving groove 3 and the end plate body 1. This allows the reinforcing rod to be placed in the recess of the U-shaped first reinforcing rib 5, providing stable support for the reinforcing rod. On the other hand, the first reinforcing ribs 5 also further increase the strength of the side walls of the receiving groove 3. The reinforcing groove 2 adjacent to the receiving groove 3 is provided with several intersecting second reinforcing ribs 6. The ends of the second reinforcing ribs 6 are connected to the intersection of the groove walls of the reinforcing groove 2. The above structure further strengthens the side walls of the receiving groove 3 and the end plate body 1 on both sides of the receiving groove 3. In summary, by transitioning from the combination of first reinforcing ribs 5 and reinforcing rods to the combination of receiving grooves 3 and second reinforcing ribs 6, and then to the combination of multiple receiving grooves 3 from the middle to both sides of the end plate body 1, a stepped strength structure is formed from the middle to both sides of the end plate body 1. This allows for different support strengths to be provided for stresses generated at different parts of the end plate body 1 when the oppositely positioned end plate body 1 is fixed. At the same time, the aforementioned groove structure can also reduce the weight of the end plate body 1 while providing sufficient support strength.

[0042] To facilitate hoisting, existing technology typically provides holes or slots for hoisting on the end plate body 1. In this embodiment, a reinforcing slot 2 is used. It should be noted that hoisting is basic common knowledge in this field, and its principles will not be elaborated here. In this embodiment, to enhance the strength during hoisting, at least two reinforcing slots 2 in the Y direction are provided with third reinforcing ribs 7. The reinforcing slots 2 with third reinforcing ribs 7 are symmetrical to both sides of the receiving slot 3, ensuring uniform and symmetrical force distribution on both sides during hoisting and preventing skewing. In this embodiment, the receiving slot 3 with the third reinforcing ribs 7 is generally selected from the outermost receiving slot 3. Since there are many reinforcing slots 2, multiple hoisting points can be provided. Therefore, third reinforcing ribs 7 can be provided in at least two reinforcing slots 2 in the X direction, thereby increasing the number of hoisting points in the X direction. In this embodiment, the third reinforcing rib 7 is T-shaped, and its end is connected to the slot wall of the reinforcing slot 2 to increase the structural strength of the slot wall during hoisting.

[0043] In this embodiment, the end plate body 1 has fixing structures at both ends in the X direction to fix the oppositely arranged end plate bodies 1. Specifically, the fixing structures are two first fixing holes 8 on both sides of the end plate body 1 away from the receiving groove 3. The first fixing holes 8 penetrate the end plate body 1 vertically in the Y direction, so that a connecting rod can be inserted into the first fixing holes 8. The connecting rod, together with the external connector, clamps the battery of the oppositely arranged end plate bodies 1 to form a battery module. Further, the end plate body 1 is also provided with a second notch 18, which is located at the end of one end of the first fixing hole 8. When a long screw is used as the connecting rod, the second notch 18 can accommodate the end of the long screw, preventing the long screw from protruding from the end plate body 1. In addition, the second notch 18 can also leave operating space for inserting and removing the connecting rod. Among them, a fracture groove 9 is provided on both sides of the end plate body 1 in the X direction to split the first fixing hole 8 into two segments. More specifically, the fracture groove 9 is located in the middle of the first fixing hole 8. This structure facilitates the forming of the first fixing hole 8 and avoids damage to the end plate body 1 caused by using a long through hole when creating the first fixing hole 8. To improve the compatibility of the end plate body 1 during fixing, several second fixing holes 10 are provided on the side wall of the end plate body 1 away from the receiving groove 3. Connectors can be inserted through the second fixing holes 10 to fix the opposite end plate body 1 from the side, thus enriching the fixing methods of the end plate body 1 and improving compatibility. Generally, strapping is used when fixing the opposite end plate bodies 1, typically steel strapping. To prevent the strapping from shifting during strapping, limiting components are also provided on both sides of the end plate body 1 away from the receiving groove 3 to limit the strapping. Specifically, the limiting components include two limiting protrusions 11 or limiting grooves provided on both sides of the end plate body 1 away from the receiving groove 3 and spaced apart along the Y direction. In this embodiment, limiting protrusions 11 are used. It should be noted that the number of limiting components is not specifically limited. In this embodiment, multiple sets of limiting components are provided and disposed on both sides of the fracture groove 9, so that the end plate body 1 can be bundled at both ends in the Y direction, making the bundling more secure. Furthermore, the opposing surfaces of the two limiting protrusions 11 are configured as inclined guide surfaces facing each other so that a limiting space for the bundling strap is formed between the two limiting protrusions 11. In other embodiments, the limiting components are limiting grooves, which can be disposed on both sides of the fracture groove 9. In addition, the opposing groove walls in the limiting groove along the Y direction are inclined guide surfaces so that the limiting groove forms a limiting space for the bundling strap. More specifically, in order to make the bundling strap straight, the limiting components located on both sides of the receiving groove 3 are symmetrical with respect to the receiving groove 3. Furthermore, in order to avoid the corners of the end plate body 1 from abrading the bundling strap when trapped, the ends of the end plate body 1 away from the receiving groove 3 are rounded, so that the bundling strap transitions smoothly at the corners.

[0044] The battery module fixing end plate also includes fixing slots. These fixing slots are disposed on the end plate body 1 and located on either side of the end of the receiving slot 3. The fixing slots are located on one side of the reinforcing structure. The specific number of fixing slots is not limited and can be designed according to the specific application. This embodiment provides two fixing slots, symmetrically arranged on both sides of the receiving slot 3. Each fixing slot includes a first fixing slot 12, a second fixing slot 13, and / or a third fixing slot 14. The first fixing slot 12 is used to fix the CCS assembly, the second fixing slot 13 is used to fix the insulating block, and the third fixing slot 14 is used to fix the wire harness. The specific selection of these slots can be chosen according to the initial design. In this embodiment, the fixing slots include a first fixing slot 12 for fixing the CCS assembly (which is existing technology and will not be explained further); and a third fixing slot 14 spaced apart from the first fixing slot 12 for fixing the wire harness. The wall of the third fixing slot 14 has wire-passing holes 15, allowing external wire harnesses to pass through the wire-passing holes 15 and be concentrated in the third fixing slot 14 for binding, making the wire harness neater and improving the compatibility of the end plate body 1. The fixing slot assembly also includes a second fixing slot 13, which is used to fix the insulating block, thereby isolating and insulating the battery module from external components and improving safety and compatibility. In this embodiment, the second fixing slot 13 is located between the first fixing slot 12 and the third fixing slot 14, and is formed by the walls of the first fixing slot 12 and the third fixing slot 14, thus reducing processing steps. To facilitate the fixing of the insulating block, a limiting guide groove 16 is provided on the opposite inner wall of the second fixing slot 13. In this embodiment, the outer walls of the opposite first fixing slot 12 and third fixing slot 14 have limiting guide grooves 16, which can be used to insert into the protrusions on the insulating block, thereby facilitating installation and ensuring the insulating block is firmly fixed to prevent it from detaching from the second fixing slot 13. It should be noted that the above structure is one form of fixing slot assembly. In other embodiments, the first fixing slot 12, the second fixing slot 13, and the third fixing slot 14 can also be individually slotted according to the design and are independent of each other.

[0045] This embodiment also provides a battery module, including the aforementioned battery module fixing end plate. The battery module is formed by fixing batteries, including but not limited to lithium iron phosphate, with two end plate bodies 1, so as to strengthen the support of the middle part of the end plate body 1, reduce the risk of damage to the end plate body 1, and improve the compatibility of the end plate body 1.

[0046] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. Those skilled in the art will be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A battery module fixing end plate, comprising an end plate body (1), one side of the end plate body (1) is provided with a reinforcing structure, the reinforcing structure comprises a plurality of reinforcing grooves (2) in the Z direction, and a plurality of the reinforcing grooves (2) are arranged in an array in the X direction and the Y direction; both ends of the end plate body (1) are provided with a fixing structure, characterized in that, at least one accommodating groove (3) is arranged in the middle of the side of the end plate body (1) where the reinforcing structure is located and in the Y direction, coaxial through holes (4) are arranged in the groove walls of the two opposite ends of the accommodating groove (3) in the Y direction to enable the reinforcing rods to be inserted; the reinforcing structure is arranged on both sides of the accommodating groove (3); a plurality of U-shaped first reinforcing ribs (5) are arranged in the accommodating groove (3), the first reinforcing ribs (5) are fixed to the two side walls of the accommodating groove (3) and the end plate body (1) to support the reinforcing rods; a plurality of second reinforcing ribs (6) are arranged in the reinforcing grooves (2) adjacent to the accommodating groove (3) and cross each other, the ends of the second reinforcing ribs (6) are connected to the intersection points of the groove walls of the reinforcing grooves (2); at least two of the reinforcing grooves (2) in the Y direction are provided with third reinforcing ribs (7), the reinforcing grooves (2) provided with the third reinforcing ribs (7) are symmetrically arranged on both sides of the accommodating groove (3), and the two third reinforcing ribs (7) are arranged in the reinforcing grooves (2) in a T shape.

2. The battery module fixing end plate according to claim 1, characterized by At least one of the through holes (4) is a threaded hole, and the reinforcing rod is a long screw rod.

3. The battery module fixing end plate according to claim 1, characterized by At least two of the reinforcing grooves (2) in the X direction are provided with the third reinforcing ribs (7).

4. The battery module fixing end plate according to claim 1, characterized by, A first notch (17) is further arranged at the end of one of the through holes (4).

5. The battery module fixation end plate of claim 1, wherein, The fixing structure is two first fixing holes (8) arranged on both sides of the end plate body (1) away from the accommodating groove (3), the first fixing holes (8) pass through the end plate body (1) up and down in the Y direction; fracture grooves (9) are arranged on both sides of the end plate body (1) to divide the first fixing holes (8) into two sections.

6. The battery module fixing end plate according to claim 5, characterized by A second notch (18) is further arranged at the end of one of the first fixing holes (8).

7. The battery module fixation end plate of claim 1, wherein, A plurality of second fixing holes (10) are further arranged on the side walls of the end plate body (1) away from the accommodating groove (3).

8. The battery module fixation end plate of claim 1, wherein, Limiting assemblies are further arranged on both sides of the end plate body (1), and the limiting assemblies are used for limiting the bundling belts.

9. The battery module fixation end plate of claim 8, wherein, The limiting assemblies comprise two limiting protrusions (11) or limiting grooves arranged on both sides of the end plate body (1) away from the accommodating groove (3) and spaced apart in the Y direction.

10. The battery module fixation end plate of claim 9, wherein, The limiting protrusions (11) or the limiting grooves are provided with inclined guide surfaces. The opposite faces of the two limiting protrusions (11) are provided with the inclined guide surfaces opposite to each other to form a limited space between the two limiting protrusions (11) for limiting the bundling belt; or, the opposite groove walls of the limiting groove along the Y direction are the inclined guide surfaces to form a limited space for limiting the bundling belt.

11. The battery module fixation end plate of claim 1, wherein, Further comprising a fixed groove group, which is arranged on either side of the end of the accommodating groove (3) and on one side of the reinforcing structure, and the fixed groove group comprises a first fixed groove (12), a second fixed groove (13) and / or a third fixed groove (14), the first fixed groove (12) is used for fixing the CCS assembly, the second fixed groove (13) is used for fixing the insulation block, and the third fixed groove (14) is used for fixing the wire harness.

12. The battery module fixation end plate of claim 11, wherein, The opposite inner walls of the second fixed groove (13) are provided with limiting guide grooves (16) to be able to be inserted with the protrusions arranged on the insulation block.

13. The battery module fixation end plate of claim 11, wherein, The groove wall of the third fixed groove (14) is provided with a wire passing hole (15), so that the external wire harness can pass through the wire passing hole (15) to be concentrated to the third fixed groove (14) for binding.

14. The battery module fixation end plate according to any one of claims 1 to 13, characterized in that, The material of the end plate body (1) is aluminum.

15. A battery module, characterized by The battery module fixed end plate comprises the battery module fixed end plate according to any one of claims 1-14. The battery module fixed end plate comprises the battery module fixed end plate according to any one of claims 1-14.

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