End plate and double-layer module

Abstract

The utility model relates to the technical field of power batteries, in particular to an end plate and a double-layer module, comprising a plate body which is used for being fixed at the side part of a battery cell assembly; a plurality of first extrusion grooves and a plurality of output electrode base mounting grooves are formed in the top of the plate body in the vertical direction in a penetrating mode, first reinforcing rib structures are formed on the groove walls between every two adjacent first extrusion grooves, and second reinforcing rib structures are formed on the groove walls between the output electrode base mounting grooves and the adjacent first extrusion grooves; a clamping groove is transversely formed in the side part of the plate body and corresponds to the output pole base mounting groove in a penetrating manner, and the clamping groove penetrates through the output pole base mounting groove in the corresponding position; according to the utility model, the plurality of first extrusion grooves and the plurality of output electrode base mounting grooves are formed in the plate body, so that the self weight of the plate body is conveniently reduced, the weight of the double-layer module is further favorably reduced, and meanwhile, the first extrusion grooves are also favorable for air circulation, so that the plate body is not easy to influence the heat dissipation of the battery cell assembly.

Description

Technical Field

[0001] The utility model relates to the technical field of power batteries, in particular to an end plate and a double-layer module. Background Art

[0002] The new energy vehicle industry has experienced rapid growth in recent years, but insufficient range has been a persistent bottleneck. Existing technologies typically increase range by increasing battery pack energy density or adding more modules to boost total battery energy. To maximize space utilization in electric vehicles, a double-layer module layout is often employed to maximize total battery energy within the limited chassis space.

[0003] The invention application with publication (announcement) number CN116706385A discloses a double-layer module and battery pack, which includes two battery modules stacked in the height direction and a support assembly. The battery module includes a frame and a cell assembly. The frame is provided with a receiving groove. The cell assembly includes a tray and a plurality of cell arranged on the tray. The tray is arranged in the receiving groove and is spaced apart from the bottom of the receiving groove to form a cavity. The frame is provided with a pressure relief channel. The cavity is respectively connected to the pressure relief channel and the explosion-proof valves of the plurality of cell; the support assembly is arranged between the two battery modules and fixedly connected to the two battery modules. The support assembly is provided with a connecting channel. The connecting channel connects the pressure relief channels of the two battery modules, and the pressure relief channel of the battery module located below is connected to the outside of the frame.

[0004] As in the above-mentioned technical solution, the frame is a square frame structure. Due to the influence of this shape, the frame not only affects the heat dissipation of the battery cell side, but also increases the weight of the double-layer module. Utility Model Content

[0005] In view of this, the utility model proposes an end plate and a double-layer module, which facilitates reducing the weight of the plate body by arranging a plurality of first extrusion grooves and a plurality of output pole base mounting grooves on the plate body, thereby facilitating the reduction of the weight of the double-layer module. At the same time, the first extrusion grooves are also conducive to the circulation of air, so that the plate body is not easily affected by the heat dissipation of the battery cell assembly.

[0006] The technical solution of the present utility model is achieved as follows:

[0007] On the one hand, the present invention provides an end plate, comprising a plate body, wherein the plate body is used to be fixed to the side of the battery core assembly;

[0008] The top of the plate body is vertically penetrated with a plurality of first extrusion grooves and a plurality of output pole base mounting grooves, wherein,

[0009] A first reinforcing rib structure is formed on the groove wall between two adjacent first extrusion grooves, and a second reinforcing rib structure is formed on the groove wall between the output pole base mounting groove and the adjacent first extrusion grooves;

[0010] A clamping slot is provided on the side of the plate body at a position corresponding to the output pole base mounting slot in a transverse direction, and the clamping slot passes through the output pole base mounting slot at the corresponding position.

[0011] On the basis of the above technical solution, preferably, a weight-reducing hole is provided through the side of the plate body in a transverse direction.

[0012] On the other hand, the present invention also provides a double-layer module, comprising the above-mentioned plate body, a battery core assembly and a steel strip, wherein:

[0013] A plate body is provided on each side of the battery core assembly;

[0014] The plate body is fixed on the battery core assembly by being tied with the steel belt.

[0015] On the basis of the above technical solution, preferably, the side of the plate body is provided with a limiting protrusion, wherein,

[0016] The limiting protrusion is supported on the bottom of the steel belt.

[0017] On the basis of the above technical solution, preferably, it further includes a tray, wherein,

[0018] The battery core assembly is adhered and fixed on the tray.

[0019] On the basis of the above technical solution, preferably, it further includes long bolts and spacers, wherein,

[0020] The tray, the battery core assembly, the steel strip, and the plate form a battery core module;

[0021] The battery cell modules are provided with two layers, the upper and lower layers, wherein the upper and lower layers of the battery cell modules are separated by the spacers, and the upper and lower layers of the battery cell modules are fixedly connected by the long bolts.

[0022] On the basis of the above technical solution, preferably, the bottom of the pad is in contact with the top of the lower plate, and the top is in contact with the bottom of the upper tray.

[0023] On the basis of the above technical solution, preferably, a positioning protrusion is provided at the bottom of the pad, and a positioning hole is provided vertically through the plate, wherein:

[0024] The positioning protrusion is plugged into the positioning hole up and down.

[0025] On the basis of the above technical solution, preferably, a crossbeam is further included, wherein:

[0026] The crossbeam is arranged at the bottom of the battery core module in the lower layer;

[0027] The long bolts vertically penetrate the plate body, the tray, and the pad, and are then screwed to the crossbeam.

[0028] On the basis of the above technical solution, preferably, bolt through holes are vertically provided on the plate body, the tray and the cushion block.

[0029] The end plate and double-layer module of the present invention have the following beneficial effects compared with the prior art:

[0030] (1) By providing a plurality of first extrusion grooves and a plurality of output pole base mounting grooves on the plate body, it is convenient to reduce the weight of the plate body, which is beneficial to the weight reduction of the double-layer module. At the same time, the first extrusion grooves are also beneficial to the circulation of air, so that the plate body is not easy to affect the heat dissipation of the battery cell assembly.

[0031] (2) A first reinforcing rib structure is formed on the groove wall between two adjacent first extrusion grooves, and a second reinforcing rib structure is formed on the groove wall between the output pole base mounting groove and the adjacent first extrusion groove, so that the structural strength of the body is higher and not easy to deform.

[0032] (3) By setting the positioning holes and the positioning protrusions for vertical insertion, the pad and the battery cell assembly can be quickly assembled.

[0033] (4) A plate body is provided on each side of the battery cell assembly, and the plate body is fixed to the battery cell assembly by tying with steel strips, so that the body does not wrap around the side of the battery cell assembly, which is beneficial to the heat dissipation of the side of the battery cell assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0035] Figure 1 This is a three-dimensional diagram of an end plate of the present invention;

[0036] Figure 2 This is a top view of an end plate of the present invention;

[0037] Figure 3 This is a three-dimensional diagram of a double-layer module of the present invention;

[0038] Figure 4 This is a partial cross-sectional view of a double-layer module of the present invention;

[0039] Figure 5 A three-dimensional diagram of the cushion block of the present invention;

[0040] Figure 6 A three-dimensional diagram of the tray of the present invention;

[0041] In the figure: 1. Plate; 2. Battery cell assembly; 3. Steel belt; 4. Tray; 5. Long bolt; 6. Spacer; 7. Battery cell module; 8. Crossbeam; 101. First extrusion groove; 102. Output pole base mounting groove; 103. Card slot; 104. Weight reduction hole; 105. Limiting protrusion; 106. Positioning hole; 601. Positioning protrusion. DETAILED DESCRIPTION

[0042] The following will be combined with the specific embodiments of the present invention to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0043] like Figure 1-6 As shown, an end plate of the present invention includes a plate body 1, wherein the plate body 1 is used to be fixed on the side of the battery cell assembly 2 to protect the side of the battery cell assembly 2. In order to reduce the weight of the plate body 1 and achieve the goal of lightweighting, the plate body 1 is made of aluminum material with a width of 20 mm and a wall thickness of 1.5 mm. After forming, the main shape of the plate body 1 is a rectangular plate structure.

[0044] like Figure 1 As shown, a plurality of first extrusion grooves 101 and a plurality of output pole base mounting grooves 102 are vertically provided on the top of the plate body 1, wherein a first reinforcing rib structure is formed on the groove wall between two adjacent first extrusion grooves 101, and a second reinforcing rib structure is formed on the groove wall between the output pole base mounting groove 102 and the adjacent first extrusion groove 101. This structure can further reduce the dead weight of the plate body 1 without affecting the strength of the plate body 1. Moreover, this structure is conducive to air circulation from the inside of the plate body 1, which is convenient for taking away heat, which is beneficial to the heat dissipation of the side of the battery cell assembly 2.

[0045] like Figure 1As shown, the cross-section of the output pole base mounting groove 102 is square, which is used to install the output pole base of the battery cell. Two groups of output pole base mounting grooves 102 are provided, each group includes two output pole base mounting grooves 102, and a number of first extrusion grooves 101 are provided between the two output pole base mounting grooves 102 in each group, wherein the cross-section of the first extrusion groove 101 is triangular, and two adjacent first extrusion grooves 101 are arranged in a parallelogram.

[0046] like Figure 1 As shown, in order to facilitate the fixation of the output pole base, a card slot 103 is provided on the side of the plate body 1 and at the position corresponding to the output pole base mounting slot 102 along the horizontal direction. The card slot 103 passes through the output pole base mounting slot 102 at the corresponding position. When installing the output pole base, the buckle on the side of the output pole base is inserted into the card slot 103 to fix the output pole base. The output pole base is not drawn in the figure.

[0047] like Figure 1 As shown, a weight-reducing hole 104 is provided through the side of the plate body 1 in the transverse direction to further reduce the dead weight of the plate body 1 .

[0048] The plate body 1 is applied to a double-layer module. Specifically, the double-layer module includes a plate body 1 , a battery cell assembly 2 , a steel strip 3 , a tray 4 , long bolts 5 and a spacer 6 .

[0049] Among them, Figure 3 As shown, a plate body 1 is provided on each side of the battery cell assembly 2; the plate body 1 is fixed to the battery cell assembly 2 by bundling with a steel belt 3. After the plate body 1 is fixed, the heat dissipation effect of the battery cell assembly 2 on both sides without the plate body 1 is better, while the battery cell assembly 2 is fixed on both sides with the plate body 1. A silicone thermal pad is provided between the plate body 1 and the battery cell assembly 2. When air flows through the first extrusion grooves 101 and the output pole base mounting grooves 102, it takes away the heat on the plate body 1, thereby realizing the heat dissipation of the side of the battery cell assembly 2.

[0050] To facilitate the installation of the steel belt 3, Figure 3 As shown, a limiting protrusion 105 is provided on the side of the plate body 1, wherein the limiting protrusion 105 is supported on the bottom of the steel belt 3. When the steel belt 3 needs to be installed, the limiting protrusion 105 is supported on the steel belt 3 to achieve the positioning of the steel belt 3, and then the steel belt 3 is tightened to fix the plate body 1 on the side of the battery cell assembly 2.

[0051] The battery cell assembly 2 is fixed on the tray 4 by using structural adhesive. The battery cell assembly 2 includes a plurality of battery cells arranged in a matrix.

[0052] like Figure 3As shown, the tray 4, the battery cell assembly 2, the steel strip 3, and the plate body 1 form a battery cell module 7. The battery cell module 7 is provided with two layers, wherein the upper and lower layers of the battery cell modules 7 are separated by a spacer 6 and fixedly connected by a long bolt 5.

[0053] Specifically, the bottom of the pad 6 is abutted against the top of the lower plate body 1, and the top is abutted against the bottom of the upper tray 4. A positioning protrusion 601 is provided at the bottom of the pad 6, and a positioning hole 106 is provided vertically along the upper edge of the plate body 1, wherein the positioning protrusion 601 and the positioning hole 106 are plugged into each other up and down. Through the above structure, the pad 6 and the battery cell assembly 2 can be quickly assembled.

[0054] like Figure 3 As shown, the crossbeam 8 is provided with two parallel beams at the bottom of the lower battery module 7, wherein, as shown in FIG. Figure 4 As shown, bolt through holes are vertically arranged on the plate body 1, tray 4 and pad 6. The holes are waist-shaped. The long bolts 5 vertically penetrate the waist-shaped holes on the plate body 1, tray 4 and pad 6, and are then screwed to the crossbeam 8 to complete the fastening of the upper and lower layers of the battery cell module 7.

[0055] like Figure 3 As shown, four long bolts 5 are arranged in a matrix, and correspondingly, four pads 6 are arranged in a matrix, wherein one crossbeam 8 is arranged below two of the long bolts 5 and screwed together. Similarly, another crossbeam 8 is screwed together with the other two long bolts 5 .

[0056] In addition, the structure of the plate body 1 is an axisymmetric structure, that is, symmetrical up and down, front and back, and left and right. Therefore, the plate body 1 can be used upside down or left and right, which increases the versatility of the end plate.

[0057] The method of using an end plate and a double-layer module of the utility model is as follows:

[0058] First, assemble two battery cell modules 7. Specifically, fix the battery cell assembly 2 on the tray 4 with structural adhesive, and then fix the two plates 1 on the sides of the battery cell assembly 2 with steel strips 3. After completing the assembly of the two battery cell modules 7, place a crossbeam 8 at the bottom of one of the battery cell modules 7.

[0059] Then, a pad 6 is inserted on the top of the battery cell module 7, and then another battery cell module 7 is placed on the pad 6. Then, the long bolt 5 is inserted into the bolt through hole, and the long bolt 5 is screwed to the crossbeam 8. After tightening, a double-layer module is formed.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An end plate, comprising a plate body (1), wherein the plate body (1) is used to be fixed to the side of a battery core assembly (2); Its characteristics are: The top of the plate body (1) is provided with a plurality of first extrusion grooves (101) and a plurality of output pole base mounting grooves (102) running vertically through the top of the plate body (1), wherein: A first reinforcing rib structure is formed on the groove wall between two adjacent first extrusion grooves (101), and a second reinforcing rib structure is formed on the groove wall between the output pole base mounting groove (102) and the adjacent first extrusion groove (101); A clamping slot (103) is provided on the side of the plate body (1) at a position corresponding to the output pole base mounting slot (102) in a transverse direction, and the clamping slot (103) passes through the output pole base mounting slot (102) at the corresponding position.

2. An end plate according to claim 1, characterized in that: A weight-reducing hole (104) is provided through the side of the plate body (1) in a transverse direction.

3. A double-layer module, characterized in that: The board (1) as claimed in claim 2 further comprises a battery core assembly (2) and a steel strip (3), wherein: A plate body (1) is provided on each side of the battery core assembly (2); The plate body (1) is fixed on the battery core assembly (2) by being bundled with the steel belt (3).

4. A double-layer module according to claim 3, characterized in that: The side of the plate body (1) is provided with a limiting protrusion (105), wherein: The limiting protrusion (105) is supported on the bottom of the steel belt (3).

5. The double-layer module according to claim 3, characterized in that: Also included is a tray (4), wherein The battery core assembly (2) is glued and fixed on the tray (4).

6. A double-layer module according to claim 5, characterized in that: It also includes a long bolt (5) and a spacer (6), wherein, The tray (4), the battery core assembly (2), the steel strip (3), and the plate body (1) form a battery core module (7); The battery module (7) is provided with an upper and lower layer, wherein the upper and lower layers of the battery module (7) are separated by the spacer (6), and the upper and lower layers of the battery module (7) are fixedly connected by the long bolts (5).

7. The double-layer module according to claim 6, characterized in that: The bottom of the pad (6) abuts against the top of the lower plate (1), and the top abuts against the bottom of the upper tray (4).

8. The double-layer module according to claim 6, characterized in that: The bottom of the pad (6) is provided with a positioning protrusion (601), and the plate body (1) is provided with a positioning hole (106) running vertically therethrough, wherein: The positioning protrusion (601) is plugged into the positioning hole (106) in an up-and-down manner.

9. The double-layer module according to claim 6, characterized in that: Also included is a crossbeam (8), wherein The crossbeam (8) is arranged at the bottom of the battery core module (7) in the lower layer; The long bolt (5) vertically penetrates the plate body (1), the tray (4), and the pad (6), and is then screwed to the crossbeam (8).

10. The double-layer module according to claim 6, characterized in that: Bolt through holes are vertically arranged on the plate body (1), the tray (4), and the cushion block (6).

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