Composite energy storage power supply end plate assembly

Abstract

The utility model discloses a composite energy storage power supply end plate assembly which comprises an end plate main body, the end plate main body is provided with a fixed surface and an assembling surface which are opposite to each other, the assembling surface of the end plate main body is provided with a plurality of groups of vertical reinforcing ribs and a plurality of groups of transverse reinforcing ribs, and the transverse reinforcing ribs and the vertical reinforcing ribs are distributed in a staggered manner to form a plurality of grid-shaped reinforcing ribs. Reinforcing end plates are arranged at the positions, corresponding to the grid-shaped reinforcing ribs, of the assembling face of the end plate body in a buckled mode, a plurality of sets of X-shaped reinforcing ribs are arranged on the faces, close to the end plate body, of the reinforcing end plates, and each set of X-shaped reinforcing ribs comprises four reinforcing ribs. The four reinforcing ribs of each set of X-shaped reinforcing ribs are arranged in the four adjacent square reinforcing ribs in an inclined pulling mode respectively, and therefore a reinforcing rib system shaped like a Chinese character'mi 'is formed on the assembling face of the end plate body. According to the composite energy storage power supply end plate assembly, the problem that an existing plastic end plate is insufficient in strength is solved, and the extrusion strength requirement of a battery module on the end plate can be met.

Description

TECHNICAL FIELD

[0001] The utility model relates to energy storage plastic part technical field, concretely relates to a composite energy storage power supply end plate assembly. BACKGROUND

[0002] The energy storage device generally includes a plurality of battery modules, a heat dissipation member and a box body, the box body includes a receiving cavity, and the plurality of battery modules and the heat dissipation member are located in the receiving cavity of the box body. The battery module is the core component of the energy storage device, usually includes a shell main body, an end plate and a plurality of battery monomers, the shell main body and the end plate are assembled together, and the plurality of battery monomers are combined together. The material of the traditional battery module end plate is usually aluminum alloy or plastic, the end plate main body has opposite fixing surfaces and assembly surfaces, the fixing surfaces are fixed together with the battery monomers, the assembly surface of the end plate main body is usually only provided with a single direction (horizontal or vertical) or at most two directions of reinforcing ribs, and there are defects of low strength and weak anti-deformation ability. In the use process of the battery module, the battery monomers are heated to apply expansion force to the end plate, which easily leads to the expansion deformation of the end plate with the cyclic charging and discharging module. Moreover, the plastic end plate is prone to burst, which makes the overall structural stability of the battery module poor, thereby affecting the normal use of the battery module. SUMMARY

[0003] The utility model aims at providing a composite energy storage power supply end plate assembly, improve the problem that the strength of the plastic end plate is insufficient at present, can satisfy the extrusion strength requirement of the battery module to the end plate.

[0004] In order to achieve the above purpose, the solution of the utility model is as follows:

[0005] A composite energy storage power supply end plate assembly, including end plate main body, the end plate main body has opposite fixing surfaces and assembly surfaces, a plurality of vertical reinforcing ribs and a plurality of horizontal reinforcing ribs are arranged on the assembly surface of the end plate main body, and the horizontal reinforcing ribs and the vertical reinforcing ribs are staggered to form a plurality of square grid reinforcing ribs, a reinforcing end plate is arranged on the position corresponding to the plurality of square grid reinforcing ribs on the assembly surface of the end plate main body, the end plate main body and the reinforcing end plate are locked together by a plurality of fasteners, one side of the reinforcing end plate close to the end plate main body is provided with a plurality of "X" shaped reinforcing ribs, each "X" shaped reinforcing rib includes four reinforcing ribs, and the four reinforcing ribs of each "X" shaped reinforcing rib are arranged in the adjacent four square grid reinforcing ribs, so as to form a "rice" shaped reinforcing rib system on the assembly surface of the end plate main body.

[0006] Through holes are arranged on both sides of the end plate main body along the length direction, and a stepped surface is arranged on the upper end of the end plate main body, wherein the upper end of the through hole is located on the corresponding position of the stepped surface.

[0007] The connecting position of the vertical reinforcing rib and the horizontal reinforcing rib is provided with a reinforcing column.

[0008] The end of the adjacent reinforcing rib is connected with an arc-shaped boss, and the arc-shaped boss is arranged on the side of the reinforcing end plate close to the end plate body.

[0009] The reinforcing column in the reinforcing rib system of the "rice" shape is concave downward to form a groove for embedding the corresponding arc-shaped boss, and a "cross" shaped displacement slot is arranged on the bottom surface of the groove for the L-shaped end of the "X" shaped reinforcing rib.

[0010] The side of the reinforcing end plate away from the end plate body is provided with a plurality of conical counterbores corresponding to the reinforcing columns in the reinforcing rib system of the "rice" shape, and the fasteners are flat cup screws arranged in the conical counterbores.

[0011] The side of the reinforcing end plate close to the end plate body is also provided with a plurality of reinforcing ribs corresponding to the reinforcing columns between the adjacent reinforcing rib systems of the "rice" shape, and the reinforcing ribs extend into the corresponding reinforcing columns.

[0012] The reinforcing end plate is provided with a strip-shaped slot on the two side edges along the length direction for the horizontal reinforcing rib to pass through, and the reinforcing end plate is provided with a strip-shaped slot on the two ends along the width direction for the vertical reinforcing rib to pass through.

[0013] The reinforcing end plate is provided with a guide column on the two ends along the width direction, and the assembly surface of the end plate body is provided with a guide hole for the guide column to extend into, and the inner wall of the outer side of the guide hole gradually inclines outward from the assembly surface to the fixed surface.

[0014] The reinforcing end plate is arranged on the end plate body to form a reinforcing rib system with a "rice" shape on the assembly surface of the end plate body, thereby improving the anti-deformation ability of the end plate. If the "rice" shape reinforcing rib is directly arranged on the end plate body, the connecting position between the reinforcing ribs is relatively weak, which weakens the anti-deformation ability of the end plate. Therefore, the end plate is ingeniously divided into two components, the end plate body and the reinforcing end plate, the force on the fixed surface of the end plate body is dispersed and transmitted to the reinforcing end plate through the "rice" shape reinforcing rib, avoiding single stress on the connecting position, and improving the strength of the end plate as a whole.

[0015] Further, the reinforcing end plate is provided with a plurality of conical counterbores on the side away from the end plate body, which correspond to the reinforcing columns in the reinforcing rib system in the "m" shape, and a flat cup screw is arranged in the conical counterbores, so that when the battery monomer is heated to apply an expansion force to the end plate body, the flat cup screw is further connected to enable the reinforcing end plate to resist the expansion force together with the end plate body, thereby improving the bending stiffness of the end plate assembly.

[0016] Further, the reinforcing end plate is provided with a plurality of conical counterbores on the side away from the end plate body, which correspond to the reinforcing columns in the reinforcing rib system in the "m" shape, and a flat cup screw is arranged in the conical counterbores, so that when the battery monomer is heated to apply an expansion force to the end plate body, the flat cup screw is further connected to enable the reinforcing end plate to resist the expansion force together with the end plate body, thereby improving the bending stiffness of the end plate assembly. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a structure schematic view of the composite energy storage power supply end plate assembly of the utility model;

[0018] Figure 2 It is an exploded structure schematic view of the composite energy storage power supply end plate assembly of the utility model;

[0019] Figure 3 It is another exploded structure schematic view of the composite energy storage power supply end plate assembly of the utility model;

[0020] Figure 4 It is a cross-sectional structure schematic view of the composite energy storage power supply end plate assembly of the utility model.

[0021] In the drawing:

[0022] End plate body 1; vertical reinforcing rib 11;

[0023] Horizontal reinforcing rib 12; through hole 13;

[0024] Guide hole 14; reinforcing column 2 or 2';

[0025] Groove 21; clearance groove 211;

[0026] Reinforcing end plate 3; conical counterbore 31;

[0027] Flat cup screw 32; reinforcing rib 41;

[0028] L-shaped end 411; arc-shaped boss 42;

[0029] Reinforcing protrusions 5; strip-shaped groove 6;

[0030] Guide column 7. DETAILED DESCRIPTION

[0031] In order to further explain the technical scheme of the utility model, the utility model will be described in detail through specific embodiments below.

[0032] A composite energy storage power supply end plate assembly, as Figures 1-4 shown, includes an end plate main body 1 made of plastic. The end plate main body 1 is rectangular, and the end plate main body 1 has opposite fixing surfaces and assembly surfaces. On the assembly surface of the end plate main body 1, multiple groups of vertical reinforcing ribs 11 and multiple groups of horizontal reinforcing ribs 12 are provided, and the horizontal reinforcing ribs 11 and the vertical reinforcing ribs 12 are staggered to form multiple square grid-shaped reinforcing ribs. Reinforcing columns are respectively provided at the joints of the vertical reinforcing ribs 12 and the horizontal reinforcing ribs 11, and blind holes are opened in each of the reinforcing columns.

[0033] A reinforcing end plate 3 made of plastic is buckled at the positions of the assembly surface of the end plate main body 1 corresponding to the multiple square grid-shaped reinforcing ribs. On the side of the reinforcing end plate 3 close to the end plate main body 1, multiple groups of "X"-shaped reinforcing rib strips are provided, and each group of "X"-shaped reinforcing rib strips is provided corresponding to four adjacent square grid-shaped reinforcing ribs.

[0034] Each group of "X"-shaped reinforcing rib strips includes four reinforcing rib strips 41. The four reinforcing rib strips 41 of each group of "X"-shaped reinforcing rib strips are respectively obliquely arranged in four adjacent square grid-shaped reinforcing ribs. When the reinforcing end plate 3 is buckled on the assembly surface of the end plate main body 1, a reinforcing rib system with a "rice" shape is formed on the assembly surface of the end plate main body 1. A reinforcing column 2 is provided at the center of each group of "rice"-shaped reinforcing rib systems, and a reinforcing column 2' is also provided between adjacent "rice"-shaped reinforcing rib systems.

[0035] In each group of "X"-shaped reinforcing rib strips, arc-shaped bosses 42 are respectively connected between the adjacent ends of the adjacent reinforcing rib strips 41. The height of the arc-shaped bosses 42 is less than the height of the reinforcing rib strips 41. Each arc-shaped boss 42 is arranged on the side of the reinforcing end plate 3 close to the end plate main body 1. L-shaped notches are also provided at the adjacent ends of the adjacent reinforcing rib strips 41, thereby forming L-shaped ends 411.

[0036] The reinforcing column 2 located in the "rice"-shaped reinforcing rib system is recessed downward to form a groove 21 for the corresponding arc-shaped boss 42 to be embedded. A cross-shaped relief groove 211 for the L-shaped end 411 of the corresponding "X"-shaped reinforcing rib strip is also opened on the bottom surface of each groove 21. When the reinforcing end plate 3 is buckled on the assembly surface of the end plate main body 1, the arc-shaped boss 42 is exactly embedded in the groove 21, and the L-shaped ends 411 of each reinforcing rib strip 41 exactly pass through the relief groove 211, so as to ensure that the surface of the reinforcing end plate 3 can be flush with the surface of the end plate main body 1.

[0037] A plurality of conical counterbores 31 are arranged on the side of the reinforcing end plate 3 away from the end plate body 1, and the plurality of conical counterbores 31 are arranged corresponding to the reinforcing columns 2 in the "rice" shaped reinforcing rib system, and a flat cup screw 32 is arranged in each of the plurality of conical counterbores 31, the flat cup screw 32 has a flat head and a threaded segment integrally connected, the threaded segment of the flat cup screw 32 is passed through the conical counterbores 31 and locked with the corresponding reinforcing columns 2, so that the reinforcing end plate 3 and the end plate body 1 are firmly connected together, and the surface of the reinforcing end plate 3 is ensured to be flat. The flat cup screw 32 is a fastener known in the art.

[0038] A plurality of reinforcing protrusions 5 are arranged on the side of the reinforcing end plate 3 close to the end plate body 1, and the plurality of reinforcing protrusions 5 are arranged corresponding to the reinforcing columns 2' (i.e. complete reinforcing columns) between adjacent "rice" shaped reinforcing rib systems, and the plurality of reinforcing protrusions 5 extend into the corresponding reinforcing columns 2'.

[0039] A plurality of strip-shaped grooves 6 are arranged on the two side edges of the reinforcing end plate 3 along the length direction, and the strip-shaped grooves 6 are arranged corresponding to the transverse reinforcing ribs 12, and a plurality of strip-shaped grooves 6 are arranged on the two ends of the reinforcing end plate 3 along the width direction, and the strip-shaped grooves 6 are arranged corresponding to the vertical reinforcing ribs 11, so that the reinforcing end plate 3 can be embedded into the assembly surface.

[0040] After the above structure is adopted, the composite energy storage power supply end plate assembly of the utility model has the reinforcing end plate 3 buckled on the end plate body 1, and a "rice" shaped reinforcing rib system is formed on the assembly surface of the end plate body 1, so that the anti-deformation ability of the end plate is improved

[0041] If only a "rice" shaped reinforcing rib system is arranged on the assembly surface of the end plate body 1, the anti-deformation ability of the end plate can be improved, but when the end plate is impacted by external load from the side of the assembly surface, the reinforcing ribs in the "rice" shaped reinforcing rib system are easily damaged;

[0042] If a "rice" shaped reinforcing rib system is arranged on the assembly surface of the end plate body 1, the reinforcing rib system also forms reinforcing columns, and a panel is arranged on the reinforcing rib system, and the panel and the reinforcing rib system are locked on the reinforcing columns through bolts, so that the end plate can protect the reinforcing ribs from direct impact when the end plate is impacted by external load from the side of the assembly surface, but the panel and the reinforcing rib are not laterally constrained, and the panel and the reinforcing rib are easily relatively slidable, that is, the connection between the panel and the reinforcing rib system is not firm, and stress concentration phenomenon is easily generated at the connection position between the panel and the reinforcing rib system, and the connection position is easily damaged;

[0043] If the reinforcing rib system in the shape of "rice" is arranged on the assembling surface of the end plate body 1, and the panel is covered on the reinforcing rib system, the panel is fixedly connected with the reinforcing rib system, so the connection between the panel and the reinforcing rib system is reliable, but the production and processing difficulty is relatively large, which is not conducive to production.

[0044] Therefore, the end plate is ingeniously split into the end plate body 1 and the reinforcing end plate 3, when the fixed surface of the end plate body 1 is subjected to the extrusion force, the end plate body 1 is dispersed and transmitted to the reinforcing end plate 3 through the "rice" shaped reinforcing rib, and the end plate body 1 and the reinforcing end plate 3 are jointly stressed, so that the stress performance of the end plate is improved as a whole.

[0045] Further, the end plate body 1 is provided with the through hole 13 on both sides along the length direction, the upper end of the end plate body 1 is provided with the stepped surface, the upper end of the through hole 13 is located on the corresponding position of the stepped surface, the locking bolt is passed through the through hole 13 and connected with the bottom of the battery box body, so that the end plate body 1 is fixed in the battery box body, and the fixing mode of the end plate body 1 and the battery box body is a known mode in the art, so the schematic diagram is not given.

[0046] Further, the reinforcing end plate 3 is provided with the plurality of conical counterbores 31 on the side away from the end plate body 1, the plurality of conical counterbores 31 are arranged in the reinforcing column 2 in the reinforcing rib system in the shape of "rice", the flat cup screw 32 is arranged in the plurality of conical counterbores 31, the reinforcing end plate 3 and the end plate body 1 are firmly connected through the flat cup screw 32, so that when the battery monomer is heated to apply the expansion force to the end plate body 1, the end plate body 1 is extruded, the reinforcing end plate 3 can jointly resist the expansion force with the end plate body 1 through the connection of the flat cup screw 32, and the bending stiffness of the end plate assembly is improved.

[0047] Further, the reinforcing end plate 3 is provided with the guide column 7 on both ends along the width direction, the assembling surface of the end plate body 1 is provided with the guide hole 14 for the guide column 7 to extend into, the inner wall of the side close to the outside of the guide hole 14 is gradually inclined outward from the assembling surface to the fixed surface, and the guide matching between the guide column 7 and the guide hole 14 facilitates the buckling of the reinforcing end plate 3 and the end plate body 1.

[0048] The above embodiments and drawings are not limited to the product form and style of the utility model, and any ordinary skilled person in the art can make appropriate changes or modifications, which should be regarded as not departing from the patent category of the utility model.

Claims

1. A composite energy storage power supply end plate assembly comprising an end plate body having opposite fixed and mounting faces, characterized by: The assembling surface of the end plate body is provided with a plurality of vertical reinforcing ribs and a plurality of horizontal reinforcing ribs, the horizontal reinforcing ribs and the vertical reinforcing ribs are staggered to form a plurality of square reinforcing ribs, the assembling surface of the end plate body is provided with reinforcing end plates corresponding to the positions of the square reinforcing ribs, the end plate body and the reinforcing end plates are locked together by a plurality of fasteners, one side of the reinforcing end plate close to the end plate body is provided with a plurality of "X" shaped reinforcing ribs, each "X" shaped reinforcing rib includes four reinforcing ribs, and the four reinforcing ribs of each "X" shaped reinforcing rib are arranged in four adjacent square reinforcing ribs respectively, so as to form a "rice" shaped reinforcing rib system on the assembling surface of the end plate body.

2. The end plate assembly of claim 1, wherein: The end plate body is provided with through holes on both sides along the length direction, and the upper end of the end plate body is provided with a stepped surface, and the upper end of the through hole is located on the corresponding position of the stepped surface.

3. The end plate assembly of claim 1, wherein: The connecting position of the vertical reinforcing rib and the horizontal reinforcing rib is provided with a reinforcing column.

4. The end plate assembly of claim 3, wherein: In each "X" shaped reinforcing rib, the end portions of the adjacent reinforcing ribs close to each other are connected with arc-shaped bosses respectively, the arc-shaped bosses are arranged on the side of the reinforcing end plate close to the end plate body, and L-shaped notches are arranged on the end portions of the adjacent reinforcing ribs close to each other, so as to form L-shaped end portions.

5. The end plate assembly of claim 4, wherein: The reinforcing column in the "rice" shaped reinforcing rib system is recessed downward to form a groove for embedding the corresponding arc-shaped boss, and a "cross" shaped displacement slot is arranged on the bottom surface of the groove for the L-shaped end portion of the corresponding "X" shaped reinforcing rib.

6. The end plate assembly of claim 3, wherein: The side of the reinforcing end plate away from the end plate body is provided with a plurality of conical counterbores, the plurality of conical counterbores are arranged corresponding to the reinforcing columns in the "rice" shaped reinforcing rib system, each fastener is a flat cup screw, and each flat cup screw is arranged in each conical counterbores.

7. The end plate assembly of claim 3, wherein: The side of the reinforcing end plate close to the end plate body is also provided with a plurality of reinforcing ribs, the plurality of reinforcing ribs are arranged corresponding to the reinforcing columns between the adjacent "rice" shaped reinforcing rib systems, and the plurality of reinforcing ribs extend into the corresponding reinforcing columns.

8. The end plate assembly of claim 1, wherein: The reinforcing end plate is provided with a strip-shaped slot on both sides along the length direction for the horizontal reinforcing rib to pass through, and the reinforcing end plate is provided with a strip-shaped slot on both ends along the width direction for the vertical reinforcing rib to pass through.

9. The end plate assembly of claim 1, wherein: The reinforcing end plate is provided with a guide column on both ends along the width direction, the assembling surface of the end plate body is provided with a guide hole for the guide column to extend into, and the inner wall of the side of the guide hole away from the assembling surface gradually inclines outward.

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