Plastic battery pack

Abstract

The utility model particularly discloses a plastic battery pack, and relates to the technical field of battery packs, the plastic battery pack comprises a battery cell, a plastic base, two end plates, a plastic surface cover, a heat dissipation aluminum plate and a BMS plate, the number of the end plates is two, the two end plates are respectively located on two opposite sides of the battery cell and fix the battery cell, and the end plates are connected with the plastic base to install the battery cell; the plastic surface cover is mounted at the upper end of the plastic base and is provided with an accommodating through groove; the heat dissipation aluminum plate is arranged in the containing through groove and is integrally formed with the plastic face cover in an injection molding mode. According to the plastic battery pack disclosed by the embodiment of the utility model, heat accumulated in a product can be dissipated, the working efficiency of components, a chip and the battery core is kept, and the service life of the product is prolonged.

Description

Technical Field

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

[0002] Plastic battery packs are multifunctional and versatile products. Their design and manufacturing technologies are constantly advancing, meeting the battery encapsulation needs of various fields. Whether in everyday consumer goods or industrial equipment, plastic battery packs demonstrate their unique value and broad application prospects.

[0003] When a plastic battery pack is in operation, the components on the BMS board release a large amount of heat, causing a large amount of heat to accumulate inside the product and not dissipate. The BMS board and battery cells operate in a high-temperature environment, which affects the working efficiency of the components, chips and battery cells, accelerates their aging, reduces their lifespan, and may even cause thermal runaway, thus reducing the product's service life. 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 a plastic battery pack that can dissipate heat accumulated inside the product, maintain the working efficiency of components, chips, and cells, and extend the product's lifespan.

[0005] A plastic battery pack according to an embodiment of the present invention includes a battery cell, a plastic base, end plates, a plastic cover, a heat dissipation aluminum plate, and a BMS plate. Two end plates are provided, located on opposite sides of the battery cell and fixing the battery cell thereon. The end plates are connected to the plastic base to mount the battery cell. The plastic cover is mounted on the upper end of the plastic base and has a receiving groove. The heat dissipation aluminum plate is located in the receiving groove and is integrally injection molded with the plastic cover. The BMS plate is located above the battery cell and connected to the heat dissipation aluminum plate.

[0006] The plastic battery pack according to the present utility model embodiment has at least the following beneficial effects: Since the heat dissipation aluminum plate is disposed in the accommodating through groove and integrally injection molded with the plastic cover, and the BMS board is connected to the heat dissipation aluminum plate, when the components on the BMS board release heat, the heat will be transferred to the heat dissipation aluminum plate and then transferred to the outside through the heat dissipation aluminum plate, thereby achieving heat dissipation, maintaining the working efficiency of components, chips and cells, and extending the product service life.

[0007] According to one embodiment of the present invention, the heat dissipation aluminum plate is made of AL1060.

[0008] According to one embodiment of the present invention, a heat insulation plate is further included, which is disposed between the battery cell and the BMS board.

[0009] According to one embodiment of the present invention, the heat insulation board is made of 3240 epoxy board.

[0010] According to one embodiment of the present invention, a thermally conductive rubber pad is further included, which is disposed between the heat dissipation aluminum plate and the BMS plate, and abuts against the heat dissipation aluminum plate and the BMS plate respectively.

[0011] According to one embodiment of the present invention, the thermally conductive rubber pad is interference-fitted into the gap between the heat dissipation aluminum plate and the BMS plate.

[0012] According to one embodiment of the present invention, the thermally conductive rubber pad is SP610-726 with a thermal conductivity of 2.0 K / ℃.

[0013] According to one embodiment of the present invention, the end plate, the plastic base, and the plastic cover are all made of PC-540.

[0014] According to one embodiment of the present invention, the BMS board is threadedly connected to the heat dissipation aluminum plate.

[0015] According to one embodiment of the present invention, the end plate is threadedly connected to the plastic base.

[0016] 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

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:

[0018] Figure 1 This is an exploded view of a plastic battery pack according to an embodiment of the present invention;

[0019] Figure 2 This is a partially exploded structural diagram of a plastic battery pack according to an embodiment of the present invention.

[0020] Figure label:

[0021] 1000 plastic battery packs;

[0022] 100 cells;

[0023] Plastic base 200;

[0024] End plate 300;

[0025] Plastic cover 400; receiving channel 410;

[0026] 500mm aluminum heat sink plate;

[0027] BMS board 600;

[0028] 700mm heat insulation board;

[0029] Thermally conductive rubber pad 800. Detailed Implementation

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] Plastic battery packs are multifunctional and versatile products. Their design and manufacturing technologies are constantly advancing, meeting the battery encapsulation needs of various fields. Whether in everyday consumer goods or industrial equipment, plastic battery packs demonstrate their unique value and broad application prospects.

[0035] When a plastic battery pack is in operation, the components on the BMS board release a large amount of heat, causing a large amount of heat to accumulate inside the product and not dissipate. The BMS board and battery cells operate in a high-temperature environment, which affects the working efficiency of the components, chips and battery cells, accelerates their aging, reduces their lifespan, and may even cause thermal runaway, thus reducing the product's service life.

[0036] Therefore, this utility model proposes a plastic battery pack 1000, as detailed in the attached drawings of the specification. Figures 1 to 2 As shown.

[0037] Reference Figure 1As shown, an embodiment of the plastic battery pack 1000 of this utility model includes a battery cell 100, a plastic base 200, an end plate 300, a plastic cover 400, a heat dissipation aluminum plate 500, and a BMS plate 600. Two end plates 300 are provided. It should be noted that the two end plates 300 are located on opposite sides of the battery cell 100 and fix the battery cell 100 thereon. It should also be noted that the end plates 300 are connected to the plastic base 200 to mount the battery cell 100. In one embodiment, the end plates 300 and the plastic base 200 are threadedly connected. It is understood that using a threaded connection makes the installation of the end plates 300 and the plastic base 200 more convenient and quick.

[0038] Reference Figure 1 and Figure 2 As shown, a plastic cover 400 is mounted on the upper end of a plastic base 200 and has a receiving groove 410. A heat dissipation aluminum plate 500 is disposed in the receiving groove 410 and is integrally injection molded with the plastic cover 400. It should be noted that during the injection molding process, a pin is used to embed the heat dissipation aluminum plate 500 into the plastic cover 400, thereby achieving integral injection molding. It can be understood that during the injection molding process, the position where the heat dissipation aluminum plate 500 is embedded in the plastic cover 400 forms the receiving groove 410.

[0039] Reference Figure 1 and Figure 2 As shown, it should be noted that the BMS board 600 is located above the battery cell 100 and is connected to the heat dissipation aluminum plate 500. It is understood that since the heat dissipation aluminum plate 500 is located in the receiving slot 410 and integrally injection molded with the plastic cover 400, and the BMS board 600 is connected to the heat dissipation aluminum plate 500, when the components on the BMS board 600 release heat, the heat will be transferred to the heat dissipation aluminum plate 500, and then transferred to the outside via the heat dissipation aluminum plate 500, thus achieving heat dissipation, maintaining the working efficiency of the components, chips, and battery cell 100, and extending the product's service life.

[0040] In one embodiment, the BMS board 600 is threadedly connected to the heat dissipation aluminum plate 500. It is understood that using a threaded connection simplifies the installation of the BMS board 600. It should be noted that the BMS board 600 can also be connected to the heat dissipation aluminum plate 500 by riveting or other methods; no specific limitation is made here.

[0041] In one embodiment of this utility model, the plastic battery pack 1000 uses an aluminum heat dissipation plate 500 made of AL1060. It should be noted that AL1060 is an industrial pure aluminum material with an aluminum content as high as 99.6%, belonging to a low-strength, high-ductility alloy. Its main characteristics include good weldability, plasticity, and corrosion resistance; simultaneously, it provides good thermal conductivity for heat dissipation.

[0042] Reference Figure 1As shown, a plastic battery pack 1000 according to an embodiment of the present invention further includes a heat insulation plate 700. It should be noted that the heat insulation plate 700 is disposed between the battery cell 100 and the BMS plate 600. It is understood that through the above arrangement, the battery cell 100 and the BMS plate 600 can be separated, preventing the heat generated by the BMS plate 600 from affecting the performance of the battery cell 100, delaying the aging of the battery cell 100, promoting the full discharge of the battery cell 100, and effectively extending the product's service life.

[0043] In one embodiment, the heat insulation board 700 is made of 3240 epoxy board. It should be noted that 3240 epoxy board is made by impregnating electrical-grade non-alkaline fiberglass cloth with epoxy resin, followed by drying and hot pressing processes. It is an insulating material with excellent comprehensive performance, suitable for various industrial fields, and particularly outstanding in environments requiring high insulation, heat resistance, and moisture resistance. It is understood that using 3240 epoxy board as the heat insulation board 700 provides both heat insulation and electrical insulation, further improving the safety of the plastic battery pack 1000.

[0044] Reference Figure 1 and Figure 2 As shown, a plastic battery pack 1000 according to an embodiment of this utility model further includes a thermally conductive rubber pad 800. It should be noted that the thermally conductive rubber pad 800 is disposed between the heat dissipation aluminum plate 500 and the BMS plate 600, and abuts against both the heat dissipation aluminum plate 500 and the BMS plate 600 respectively. It can be understood that by providing the thermally conductive rubber pad 800, direct contact between the BMS plate 600 and the heat dissipation aluminum plate 500 can be avoided, preventing scratches. At the same time, the thermally conductive rubber pad 800 can fully contact both the BMS plate 600 and the heat dissipation aluminum plate 500, enabling the heat generated by the BMS plate 600 to be fully transferred to the heat dissipation aluminum plate 500.

[0045] In one embodiment, the thermally conductive rubber pad 800 is interference-fitted into the gap between the heat sink aluminum plate 500 and the BMS plate 600. It is understood that this interference fit further improves the contact effect between the thermally conductive rubber pad 800 and the BMS plate 600 and the heat sink aluminum plate 500, thereby more effectively transferring heat from the BMS plate 600 to the heat sink aluminum plate 500.

[0046] In one embodiment, the thermally conductive rubber pad 800 uses SP610-726, which has a thermal conductivity of 2.0 K / ℃. It should be noted that SP610-726 is a high thermal conductivity, high temperature resistance, and insulating silicone sheet, suitable for applications requiring both heat dissipation and insulation. Understandably, due to its excellent thermal conductivity and insulation properties, SP610-726 is a good choice for the thermally conductive rubber pad 800.

[0047] In one embodiment of this utility model, the plastic battery pack 1000, end plate 300, plastic base 200, and plastic cover 400 are all made of PC-540. It should be noted that PC-540 is a mixture of polycarbonate and acrylonitrile-butadiene-styrene copolymer. It is a thermoplastic plastic formed by combining polycarbonate and acrylonitrile-butadiene-styrene copolymer (ABS), combining the moldability of ABS with the mechanical properties, impact strength, temperature resistance, and UV resistance of PC. It can be widely used in automotive interior parts, business machines, communication equipment, home appliances, and lighting equipment. It is understood that the end plate 300, plastic base 200, and plastic cover 400 made of PC-540 are low in cost and have good insulation properties.

[0048] 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. A plastic battery pack, characterized in that, include: Battery cell: Plastic base; The end plate is provided in two pieces, which are respectively located on opposite sides of the battery cell and fix the battery cell. The end plate is connected to the plastic base to install the battery cell. A plastic cover is installed on the upper end of the plastic base and is provided with a receiving groove; A heat dissipation aluminum plate is disposed in the receiving groove and is integrally injection molded with the plastic cover; The BMS board is located above the battery cell and is connected to the heat dissipation aluminum plate.

2. The plastic battery pack according to claim 1, characterized in that, The heat dissipation aluminum plate is made of AL1060.

3. The plastic battery pack according to claim 1, characterized in that, It also includes a heat insulation plate, which is disposed between the battery cell and the BMS board.

4. The plastic battery pack according to claim 3, characterized in that, The insulation board is made of 3240 epoxy board.

5. The plastic battery pack according to claim 1, characterized in that, It also includes a thermally conductive rubber pad, which is disposed between the heat dissipation aluminum plate and the BMS plate, and abuts against the heat dissipation aluminum plate and the BMS plate respectively.

6. The plastic battery pack according to claim 5, characterized in that, The thermally conductive rubber pad is interference-fitted into the gap between the heat dissipation aluminum plate and the BMS plate.

7. The plastic battery pack according to claim 5, characterized in that, The thermally conductive rubber pad is made of SP610-726 and has a thermal conductivity of 2.0 K / ℃.

8. The plastic battery pack according to claim 1, characterized in that, The end plate, the plastic base, and the plastic cover are all made of PC-540.

9. The plastic battery pack according to claim 1, characterized in that, The BMS board is threadedly connected to the heat dissipation aluminum plate.

10. The plastic battery pack according to claim 1, characterized in that, The end plate is threadedly connected to the plastic base.

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