End plate and battery pack

Abstract

The utility model particularly discloses an end plate and a battery pack, and relates to the technical field of battery packs, the end plate comprises a plate body and a plurality of screw rods, the plate body is made of PC-540 and is provided with a plurality of mounting holes, the plurality of mounting holes are arranged at intervals along the length direction of the plate body, and each mounting hole extends along the vertical direction; according to the end plate provided by the embodiment of the utility model, the cost of raw materials is low, the processing cost is low, the short circuit risk is avoided, and the market competitiveness of the battery pack is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery pack technology, and in particular to an end plate and a battery pack. Background Technology

[0002] As a core component of energy storage devices, battery packs play a crucial role in modern technology. Their design, manufacturing, and application involve multiple fields, and with continuous technological advancements, through optimized structure, improved performance, and enhanced safety, battery packs will play an even greater role in the future energy and transportation sectors.

[0003] Battery packs typically use sheet metal end plates as the cell fixing structure. During battery pack assembly, the cells are arranged sequentially, and sheet metal end plates are placed on both sides. Insulating sheets are placed between the cells and the sheet metal end plates for isolation. Then, plastic-coated steel strips are used for heat fusion bonding, and screws are used to lock the sheet metal end plates to the chassis. It is evident that using sheet metal end plates has many drawbacks: high raw material costs, high processing costs, and the risk of short circuits, reducing the battery pack's market competitiveness. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes an end plate that has low raw material costs, low processing costs, and no short-circuit risk, thereby improving the market competitiveness of the battery pack.

[0005] This utility model also proposes a battery pack, which includes the aforementioned end plate.

[0006] According to an embodiment of the present invention, the end plate includes a plate body and multiple screws. The plate body is made of PC-540 and has multiple mounting holes. The multiple mounting holes are arranged at intervals along the length direction of the plate body, and each mounting hole extends in the vertical direction. The multiple screws are installed in the multiple mounting holes one by one.

[0007] The end plate according to the embodiments of this utility model has at least the following beneficial effects: Since the plate body is made of PC-540, its raw material costs are low, processing costs are low, and there is no risk of short circuits. Simultaneously, because the plate body has multiple mounting holes, and multiple screws are installed one-to-one in these holes, the screws improve the overall strength of the end plate, ensuring its performance and enhancing its overall market competitiveness.

[0008] According to one embodiment of the present invention, the plate body is recessed at the upper end face of the mounting hole to form an accommodating space, the accommodating space being used to accommodate the head of the screw.

[0009] According to one embodiment of the present invention, the outer peripheral wall of the plate is provided with a steel strip mounting groove arranged along its circumference, and the upper and lower groove walls of the steel strip mounting groove are both provided with a first chamfer.

[0010] According to one embodiment of the present invention, two steel strip mounting grooves are provided, and the two steel strip mounting grooves are spaced apart in the vertical direction.

[0011] According to one embodiment of the present invention, the outer peripheral wall of the plate is provided with multiple reinforcing ribs to form a reinforcing rib portion, and the reinforcing rib portion is recessed inward to form a limiting groove.

[0012] According to one embodiment of the present invention, the reinforcing rib is recessed inward by a distance of 5 mm.

[0013] According to one embodiment of the present invention, a portion of the lower end face of the plate is recessed to form an avoidance space and a guide plate, and a second chamfer is provided on the outer periphery of the guide plate.

[0014] According to one embodiment of the present invention, a portion of the upper end face of the plate body is recessed to form two support grooves, and the upper end face of each of the two support grooves is embedded with a first knurled nut. The first knurled nuts on the two support grooves are respectively used to fix the main positive aluminum busbar and the main negative aluminum busbar.

[0015] According to one embodiment of the present invention, multiple second knurled nuts are embedded in the upper end face of the plate, and the multiple second knurled nuts are used to fix the battery cell pressure strip.

[0016] The battery pack according to an embodiment of the present invention includes an end plate according to an embodiment of the present invention.

[0017] The battery pack according to the embodiments of the present utility model has at least the following beneficial effects: due to the improved overall market competitiveness of the end plate, the market competitiveness of the battery pack is also improved.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0020] Figure 1 This is a schematic diagram of an end plate according to an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of an end plate according to an embodiment of the present utility model;

[0022] Figure 3This is a schematic diagram of the installation of the end plate according to one embodiment of the present utility model;

[0023] Figure 4 This is a schematic diagram of the installation of the end plate according to one embodiment of the present utility model;

[0024] Figure 5 This is a schematic diagram of the installation of the end plate according to one embodiment of the present invention.

[0025] Figure label:

[0026] End plate 1000; plate body 100; mounting hole 110; accommodating space 120; steel strip mounting groove 130; upper groove wall 131; lower groove wall 132; reinforcing rib 140; limiting groove 150; clearance space 160; guide plate 170; support groove 180; first knurled nut 181; second knurled nut 190; screw 200;

[0027] 2000 steel strip;

[0028] Main positive aluminum busbar 3000;

[0029] Main negative aluminum busbar 4000;

[0030] Battery cell pressure bar 5000;

[0031] 6000 battery cells;

[0032] Extrusion fixture 7000. Detailed Implementation

[0033] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0034] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, inside, outside, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, 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 this utility model.

[0035] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0036] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0037] As a core component of energy storage devices, battery packs play a crucial role in modern technology. Their design, manufacturing, and application involve multiple fields, and with continuous technological advancements, through optimized structure, improved performance, and enhanced safety, battery packs will play an even greater role in the future energy and transportation sectors.

[0038] Battery packs typically use sheet metal end plates as the cell fixing structure. During battery pack assembly, the cells are arranged sequentially, and sheet metal end plates are placed on both sides. Insulating sheets are placed between the cells and the sheet metal end plates for isolation. Then, plastic-coated steel strips are used for heat fusion bonding, and screws are used to lock the sheet metal end plates to the chassis. It is evident that using sheet metal end plates has many drawbacks: high raw material costs, high processing costs, and the risk of short circuits, reducing the battery pack's market competitiveness.

[0039] Therefore, this utility model proposes an end plate 1000, as detailed in the accompanying drawings. Figures 1 to 5 As shown.

[0040] Reference Figure 1 and Figure 3 As shown, an end plate 1000 according to one embodiment of the present invention includes a plate body 100 and multiple screws 200. The plate body 100 is made of PC-540. It should be noted that PC-540 is a mixture of polycarbonate and acrylonitrile-butadiene-styrene copolymer, a thermoplastic plastic formed by combining polycarbonate and acrylonitrile-butadiene-styrene copolymer (ABS). It combines the moldability of ABS with the mechanical properties, impact strength, temperature resistance, and UV resistance of PC, and can be widely used in automotive interior parts, business machines, communication equipment, home appliances, and lighting equipment. It is understood that because the plate body 100 is made of PC-540, its raw material costs are low, processing costs are low, and there is no risk of short circuits. In one embodiment, the PC-540 used contains 70% ABS and 30% PC.

[0041] Reference Figure 1 and Figure 2As shown, the plate 100 is generally square in shape. Furthermore, the plate 100 has multiple mounting holes 110. It should be noted that the multiple mounting holes 110 are spaced apart along the length of the plate 100, and each mounting hole 110 extends vertically. In one embodiment, the multiple mounting holes 110 are evenly spaced along the length of the plate 100. That is, in this case, the distance between each mounting hole 110 is equal along the length of the plate 100. It can be understood that, through the above arrangement, the distribution of the multiple mounting holes 110 is more reasonable.

[0042] Reference Figure 1 and Figure 2 As shown, in one embodiment, the cross-section of the mounting hole 110 is circular, that is, the mounting hole 110 is a circular hole. It should be noted that the diameter of the mounting hole 110 is not specifically limited here, and can be set according to actual conditions. It should also be noted that the shape of the mounting hole 110 can be other than that of a square hole, etc., and can be set according to actual conditions, without specific limitations here.

[0043] Reference Figure 3 and Figure 4 As shown, multiple screws 200 are installed one-to-one in multiple mounting holes 110. It should be noted that the screws 200 pass through the mounting holes 110 and are threadedly connected to the nuts to achieve installation. It can be understood that through this arrangement, multiple screws 200 pass through the mounting holes 110, improving the overall strength of the end plate 1000, ensuring the performance of the end plate 1000, and enhancing the overall market competitiveness of the end plate 1000.

[0044] In one embodiment, there are three screws 200 and three mounting holes 110, with the three screws 200 being installed in the three mounting holes 110 one-to-one. In another embodiment, there are four screws 200 and four mounting holes 110, with the four screws 200 being installed in the four mounting holes 110 one-to-one. In yet another embodiment, there are five screws 200 and five mounting holes 110, with the five screws 200 being installed in the five mounting holes 110 one-to-one. It is understood that the number of screws 200 and the number of mounting holes 110 can be selected according to actual conditions and are not specifically limited here.

[0045] Reference Figure 1 and Figure 3As shown, in one embodiment of the present invention, the end plate 1000 has a recessed upper surface at the mounting hole 110 to form an accommodating space 120. It should be noted that the accommodating space 120 is used to accommodate the head of the screw 200. It is understood that, through the above arrangement, the head of the screw 200 will not protrude beyond the plate 100, making the overall structure of the end plate 1000 more reasonable. It should be noted that the size of the accommodating space 120 is not specifically limited here; it can be set according to actual conditions, as long as it can completely accommodate the head of the screw 200. It is understood that the number of accommodating spaces 120 is equal to the number of mounting holes 110, and the upper surface of each mounting hole 110 is recessed to form an accommodating space 120.

[0046] Continue to refer to Figure 1 and Figure 3 As shown, in one embodiment of the present invention, an end plate 1000 has a steel strip mounting groove 130 on its outer peripheral wall, which is arranged circumferentially along the plate body 100. It is understood that the steel strip mounting groove 130 is used to mount a steel strip 2000. Furthermore, the upper side wall of the steel strip mounting groove 130 is an upper groove wall 131, and the lower side wall is a lower groove wall 132. It should be noted that both the upper groove wall 131 and the lower groove wall 132 of the steel strip mounting groove 130 are provided with a first chamfer. It is understood that, through the above arrangement, when the steel strip 2000 is installed in the steel strip mounting groove 130, the first chamfer acts as a guide, thereby achieving rapid assembly of the steel strip 2000.

[0047] Continue to refer to Figure 1 and Figure 3 As shown, in one embodiment, two steel strip mounting slots 130 are provided, and the two steel strip mounting slots 130 are spaced apart in the vertical direction. It can be understood that, through the above arrangement, when assembling the battery pack, the end plate 1000 can install two steel strips 2000, providing a better fixing effect for the battery cells 6000. It should be noted that the distance between the two steel strip mounting slots 130 is not specifically limited here. It should also be noted that the number of steel strip mounting slots 130 can also be three, four, five, etc., and can be set according to needs.

[0048] Reference Figure 1 and Figure 5 As shown, in one embodiment of the present invention, the end plate 1000 has multiple reinforcing ribs forming a reinforcing rib portion 140 on its outer peripheral wall. Furthermore, the reinforcing rib portion 140 is recessed inward to form a limiting groove 150. That is, the reinforcing rib portion 140 is actually located at the bottom of the limiting groove 150. It can be understood that, through the above arrangement, in the subsequent cell extrusion process, the limiting groove 150 serves to limit and fix the extrusion fixture 7000.

[0049] In one embodiment, the reinforcing rib 140 is recessed inward by a distance of 5 mm. It is understood that, through the above arrangement, the depth of the forming limiting groove 150 is reasonable, which is beneficial for the subsequent cell extrusion process. In another embodiment, the reinforcing rib 140 is recessed inward by a distance of 4 mm; in yet another embodiment, the reinforcing rib 140 is recessed inward by a distance of 6 mm.

[0050] Reference Figure 2 and Figure 3 As shown, in one embodiment of the present invention, the end plate 1000 has a recessed lower end face forming a clearance space 160 and a guide plate 170. The guide plate 170 has a second chamfer along its outer periphery. It is understood that the clearance space 160 is used to avoid the base reinforcing ribs during battery pack assembly, reducing the product height and maximizing the utilization of the internal space. Simultaneously, the second chamfer provides a guiding function, facilitating the installation of the end plate 1000.

[0051] Reference Figure 1 and Figure 3 As shown, in one embodiment of the present invention, the end plate 1000 has two support grooves 180 recessed on its upper end surface. A first knurled nut 181 is embedded in the upper end surface of each of the two support grooves 180. The first knurled nuts 181 on the two support grooves 180 are used to fix the main positive aluminum busbar 3000 and the main negative aluminum busbar 4000, respectively. It can be understood that through the above arrangement, the overall structure of the end plate 1000 is more reasonable, and the main positive aluminum busbar 3000 and the main negative aluminum busbar 4000 can be installed smoothly.

[0052] Reference Figure 1 , Figure 3 and Figure 4 As shown, in one embodiment of this utility model, the end plate 1000 has multiple second knurled nuts 190 embedded in its upper surface. These second knurled nuts 190 are used to fix the cell clamping strip 5000. It can be understood that, through the above arrangement, the end plate 1000 can better play its role in battery pack assembly, fixing the cell 6000 together with the cell clamping strip 5000.

[0053] This utility model proposes a battery pack, which includes an end plate 1000 according to an embodiment of this utility model.

[0054] The battery pack of this utility model improves the overall market competitiveness of the end plate 1000, thus also improving the market competitiveness of the battery pack.

[0055] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, and not to limit it. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present utility model.

Claims

1. An end plate, characterized in that, include: The board body is made of PC-540 and has multiple mounting holes. The mounting holes are arranged at intervals along the length of the board body, and each mounting hole extends in the vertical direction. Multiple screws, each screw being installed in one of the multiple mounting holes; The upper surface of the plate is recessed to form two support grooves. The upper surface of each of the two support grooves is embedded with a first knurled nut. The first knurled nuts on the two support grooves are used to fix the main positive aluminum busbar and the main negative aluminum busbar, respectively.

2. The end plate according to claim 1, characterized in that, The plate body is recessed at the upper end face of the mounting hole to form an accommodating space, which is used to accommodate the head of the screw.

3. The end plate according to claim 1, characterized in that, The outer peripheral wall of the plate is provided with a steel strip mounting groove arranged along its circumference, and the upper and lower groove walls of the steel strip mounting groove are both provided with a first chamfer.

4. The end plate according to claim 3, characterized in that, The steel strip mounting groove is provided in two places, and the two steel strip mounting grooves are spaced apart in the vertical direction.

5. The end plate according to claim 1, characterized in that, The outer peripheral wall of the plate is provided with multiple reinforcing ribs to form a reinforcing rib section, and the reinforcing rib section is recessed inward to form a limiting groove.

6. The end plate according to claim 5, characterized in that, The reinforcing rib is recessed inward by a distance of 5mm.

7. The end plate according to claim 1, characterized in that, The lower end face of the plate is recessed to form a clearance space and a guide plate, and the outer periphery of the guide plate is provided with a second chamfer.

8. The end plate according to claim 1, characterized in that, Multiple second knurled nuts are embedded in the upper end face of the plate, and these multiple second knurled nuts are used to fix the battery cell pressure bar.

9. A battery pack, characterized in that, Includes the end plate as described in any one of claims 1 to 8.

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