Portable large-size battery module and pressurizing device thereof

Abstract

The utility model discloses a portable large-size battery module and a pressurizing device thereof, the battery module comprises a positive pole shell, a sealing ring, a positive pole piece, an electrolyte membrane, a negative pole piece and a negative pole shell which are sequentially distributed from bottom to top, the positive plate, the electrolyte membrane and the negative plate are sequentially and tightly stacked in a containing groove defined by the positive shell, the negative shell and the sealing ring, the battery module adopts a stacked electrode design and a full-circumferential sealing structure, and a battery structure formed by connecting a plurality of small batteries in series can be directly replaced; and the volume and the counterweight of the battery module of high-energy-consumption equipment such as an industrial sensor and a micro unmanned aerial vehicle are obviously simplified. The pressurizing device comprises an upper cover and a lower cover or comprises a positioning seat and a pressing block, the upper cover can be pressed downwards relative to the lower cover, and the pressing block can be pressed downwards towards the positioning seat so as to pressurize the battery module. According to the utility model, the brand-new battery module and the pressurizing device are adopted, and the blank of the demand of the market on a large-capacity, high-reliability and integrated miniature power supply is filled.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to a convenient large-size battery module and its pressurization device. Background Technology

[0002] With the rapid development of technology, specialized equipment has created an urgent need for high-capacity batteries. On the one hand, in high-energy-consuming devices such as industrial sensors and micro-drones, multiple small batteries connected in series are generally used to meet power requirements, but this approach increases the size and weight of the power module. On the other hand, in the battery pressing process, traditional tablet presses are only suitable for pressing batteries with smaller diameters. For large-sized batteries, specialized tablet pressing equipment is required, and it is difficult to ensure the uniformity and safety of the pressing process. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a convenient large-size battery module that can meet the urgent needs of special equipment for high-capacity batteries, improve the convenience of assembly, and ensure the performance of the battery module.

[0004] To solve the above problems, the technical solution adopted by this utility model is as follows: A convenient large-size battery module includes a positive electrode shell, a sealing ring, a positive electrode sheet, an electrolyte membrane, a negative electrode sheet, and a negative electrode shell arranged sequentially from bottom to top. The positive electrode shell and the negative electrode shell are both sealed and attached to the sealing ring. The positive electrode sheet, the electrolyte membrane, and the negative electrode sheet are sequentially and tightly stacked in a receiving groove formed by the positive electrode shell, the negative electrode shell, and the sealing ring.

[0005] Compared with existing technologies, the advantages of this utility model are as follows: by sequentially and tightly stacking the positive electrode sheet, electrolyte membrane, and negative electrode sheet in a receiving groove surrounded by the positive electrode shell, negative electrode shell, and sealing ring, a large-size battery module can be obtained after press fitting. The layered electrode design and full-circumferential sealing structure can directly replace the battery structure of multiple small batteries connected in series, significantly simplifying the volume and weight of battery modules for high-energy-consuming equipment such as industrial sensors and micro drones, meeting the urgent needs of special equipment for high-capacity batteries. Moreover, this battery module can be directly pressurized and assembled by stacking large-size contact areas, without being limited by traditional pressing machines and existing multi-station hydraulic equipment. This not only improves the convenience of assembly but also makes it easy to ensure the tight fit of each layer of the battery module's internal structure, ensuring the performance of the battery module.

[0006] The aforementioned portable large-size battery module also includes a spring and a gasket, wherein the spring, the gasket, the positive electrode, the electrolyte membrane, and the negative electrode are sequentially and tightly stacked in the receiving groove.

[0007] In the aforementioned convenient large-size battery module, the end face of the spring is wavy.

[0008] In the aforementioned convenient large-size battery module, the positive electrode shell has a first annular sealing groove, the negative electrode shell has a second annular sealing groove, and the sealing ring is sealed and elastically connected within the first annular sealing groove and the second annular sealing groove.

[0009] This utility model also provides a pressurizing device for pressurizing the above-mentioned convenient large-size battery module. The pressurizing device includes an upper cover and a lower cover. The upper cover and the lower cover can respectively position the upper part and the lower part of the battery module, and the upper cover can press down relative to the lower cover to pressurize the battery module.

[0010] The aforementioned pressurizing device has an upper positioning groove on the upper cover and a lower positioning groove on the lower cover. The upper positioning groove and the lower positioning groove are respectively used to position and fit the upper and lower parts of the battery module.

[0011] In the aforementioned pressurizing device, the upper cover is screwed onto the lower cover, and when the upper cover and the lower cover are screwed together and close to each other, they can pressurize the battery module.

[0012] In the aforementioned pressurizing device, a first threaded connector is provided between the upper cover and the lower cover. A nut is connected to the tail of the first threaded connector. When the nut is tightened, the upper cover and the lower cover can be pressed against each other to pressurize the battery module.

[0013] This utility model also provides another pressurizing device for pressurizing the above-mentioned convenient large-size battery module. The pressurizing device includes a positioning seat and a pressing block. The battery module is positioned between the positioning seat and the pressing block. The pressing block can press down toward the positioning seat to pressurize the battery module.

[0014] The aforementioned pressurizing device further includes a second threaded connector. The positioning seat has a positioning hole, and the pressure block has a positioning post. The positioning post is positioned and inserted into the positioning hole. The second threaded connector passes through the pressure block and is threaded to the positioning seat. When the second threaded connector is screwed into the positioning seat, it can drive the pressure block to press down toward the positioning seat to pressurize the battery module.

[0015] This utility model also provides a variety of pressurizing devices, all of which can be used in pressurizing devices. The battery module in this utility model adopts a brand-new battery module and pressurizing device, which can effectively solve the problems of poor pressure uniformity and frame deformation in traditional tablet presses. At the same time, it is not limited by the high mechanical precision requirements and slow response of existing multi-station hydraulic equipment. Improvements have been made to the battery module's own structure and the matching pressurizing device, filling the market gap for large-capacity, high-reliability, integrated micro power supplies.

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0017] Figure 1 This is an exploded view of the battery module according to Embodiment 1 of this utility model;

[0018] Figure 2 This is an exploded view of the battery module according to Embodiment 2 of this utility model;

[0019] Figure 3 This is an exploded view of the battery module and pressurization device according to Embodiment 3 of this utility model;

[0020] Figure 4 This is an exploded view of the battery module and pressurization device according to Embodiment 4 of this utility model;

[0021] Figure 5 This is one of the exploded views of the battery module and pressurizing device in Embodiment 5 of this utility model;

[0022] Figure 6 This is the second exploded view of the battery module and pressurizing device in Embodiment 5 of this utility model;

[0023] Figure 7 This is an exploded view of the pressurization device of Embodiment 5 of this utility model.

[0024] The reference numerals are as follows: 100 Battery module, 110 Positive electrode shell, 111 First annular sealing groove, 112 Sink, 120 Sealing ring, 130 Positive electrode sheet, 140 Electrolyte membrane, 150 Negative electrode sheet, 160 Negative electrode shell, 170 Spring sheet, 180 Gasket, 200 Top cover, 300 Bottom cover, 310 Lower positioning groove, 400 First threaded connector, 500 Nut, 600 Positioning seat, 610 Positioning hole, 700 Pressure block, 710 Positioning post, 800 Second threaded connector, 900 Buffer pad. Detailed Implementation

[0025] The embodiments of this utility model are described in detail below:

[0026] Example 1

[0027] Reference Figure 1Embodiment 1 of this utility model provides a convenient large-size battery module 100, which includes a positive electrode shell 110, a sealing ring 120, a positive electrode sheet 130, an electrolyte membrane 140, a negative electrode sheet 150 and a negative electrode shell 160 arranged sequentially from bottom to top. The positive electrode shell 110 and the negative electrode shell 160 are both sealed and attached to the sealing ring 120. The positive electrode sheet 130, the electrolyte membrane 140 and the negative electrode sheet 150 are sequentially and tightly stacked in a receiving groove formed by the positive electrode shell 110, the negative electrode shell 160 and the sealing ring 120.

[0028] This invention achieves a large-size battery module 100 by sequentially and tightly stacking the positive electrode 130, electrolyte membrane 140, and negative electrode 150 within a receiving groove formed by the positive electrode shell 110, negative electrode shell 160, and sealing ring 120, and then pressing them together. Employing a stacked electrode design and a fully circumferential sealed structure, it can directly replace the battery structure of multiple small batteries connected in series, significantly simplifying the volume and weight of battery modules for high-energy-consuming devices such as industrial sensors and micro-drones. This meets the urgent need for high-capacity batteries in special equipment. Furthermore, the battery module 100, through its large contact area stacking, can be directly pressurized and assembled, unrestricted by traditional pressing machines and existing multi-station hydraulic equipment. This not only improves assembly convenience but also ensures the tight fit of the internal layers of the battery module 100, guaranteeing its performance.

[0029] Furthermore, the battery module 100 also includes a spring 170 and a gasket 180, with the spring 170, gasket 180, positive electrode 130, electrolyte membrane 140, and negative electrode 150 sequentially and tightly stacked within the receiving groove. Through the structural design of the spring 170 and gasket 180, during the press-fitting of the battery module 100, the spring 170 can automatically compensate for minute gaps between components under pressure, ensuring the overall compactness of the battery module 100 and guaranteeing a tight fit between the internal layers. Furthermore, to better achieve the compensation effect of the spring 170, its end face is wavy, allowing for better deformation and the generation of a reaction force under pressure to automatically compensate for gaps.

[0030] Furthermore, in this embodiment, the positive electrode shell 110, sealing ring 120, positive electrode sheet 130, electrolyte membrane 140, negative electrode sheet 150, negative electrode shell 160, spring sheet 170, and gasket 180 are all circular, forming a circular battery. The negative electrode sheet 150 is made of lithium-plated copper sheet, the sealing ring 120 is made of rubber ring, and the gasket 180 is made of stainless steel sheet.

[0031] Furthermore, the positive electrode shell 110 has a first annular sealing groove 111, and the negative electrode shell 160 has a second annular sealing groove (not shown in the figure, but its structure can be referenced from the first annular sealing groove 111). The sealing ring 120 is sealed and elastically connected to the first annular sealing groove 111 and the second annular sealing groove. After pressing, the mechanical seal of the battery module 100 can be achieved by the physical deformation of the sealing ring 120. Both the positive electrode shell 110 and the negative electrode shell 160 have recessed grooves 112. When the negative electrode shell 160 is fastened to the positive electrode shell 110 and sealed by the sealing ring 120, the space of the recessed grooves 112 in the positive electrode shell 110 and the negative electrode shell 160 is a receiving groove for accommodating the spring sheet 170, the gasket 180, the positive electrode sheet 130, the electrolyte membrane 140, and the negative electrode sheet 150.

[0032] Example 2

[0033] Reference Figure 2 The second embodiment of this utility model provides a convenient large-size battery module 100, which differs from the battery module 100 in the first embodiment in that the positive electrode shell 110, sealing ring 120, positive electrode sheet 130, electrolyte membrane 140, negative electrode sheet 150, negative electrode shell 160 and gasket 180 are all square, forming a square battery.

[0034] Example 3

[0035] Reference Figure 3 Embodiment 3 of this utility model provides a pressurizing device for pressurizing the aforementioned portable large-size battery module 100. The pressurizing device includes an upper cover 200 and a lower cover 300. The upper cover 200 and the lower cover 300 can respectively position the upper and lower parts of the battery module 100. Specifically, the upper cover 200 has an upper positioning groove, and the lower cover 300 has a lower positioning groove 310. The upper positioning groove and the lower positioning groove 310 are respectively used to position and fit the upper and lower parts of the battery module 100. The upper cover 200 can press down relative to the lower cover 300 to pressurize the battery module 100.

[0036] Furthermore, for a circular battery, the upper cover 200 can be screwed onto the lower cover 300. When the upper cover 200 and the lower cover 300 are screwed together and close to each other, pressure can be applied to the battery module 100. During pressure application, the sealing ring 120 is first embedded into the first annular sealing groove 111 of the positive electrode shell 110. Then, the spring sheet 170, the gasket 180, the positive electrode sheet 130, the electrolyte membrane 140, and the negative electrode sheet 150 are stacked in sequence to form a complete cell assembly. After that, the cell assembly is placed into the recessed groove 112 inside the positive electrode shell 110, and then the negative electrode shell 160 is fastened. Next, the assembled structure is positioned in the lower positioning groove 310 of the lower cover 300, the upper cover 200 is fastened, and the upper positioning groove is positioned and fitted onto the upper part of the battery module 100. The upper cover 200 is manually screwed on to apply pressure to the battery module 100 until the battery module 100 is shaped. Then, the upper cover 200 is screwed off in the opposite direction and the battery module 100 is taken out.

[0037] Example 4

[0038] Reference Figure 4 Embodiment 4 of this utility model provides a pressurizing device for pressurizing the aforementioned portable large-size battery module 100. The pressurizing device includes an upper cover 200 and a lower cover 300. The upper cover 200 and the lower cover 300 can respectively position the upper and lower parts of the battery module 100. Specifically, the upper cover 200 has an upper positioning groove, and the lower cover 300 has a lower positioning groove 310. The upper positioning groove and the lower positioning groove 310 are respectively used to position and fit the upper and lower parts of the battery module 100. The upper cover 200 can press down relative to the lower cover 300 to pressurize the battery module 100.

[0039] Furthermore, for the square battery, a first threaded connector 400 is provided between the upper cover 200 and the lower cover 300. A nut 500 is connected to the tail of the first threaded connector 400. When the nut 500 is tightened, the upper cover 200 and the lower cover 300 are pressed against each other to pressurize the battery module 100. During pressurization, the sealing ring 120 is first embedded in the first annular sealing groove 111 of the positive electrode shell 110. Then, the spring sheet 170, the gasket 180, the positive electrode sheet 130, the electrolyte membrane 140, and the negative electrode sheet 150 are stacked in sequence to form a complete cell assembly. After that, the cell assembly is placed in the recessed groove 112 inside the positive electrode shell 110, and the negative electrode shell 160 is fastened. Then, the assembled structure is positioned in the lower positioning groove 310 of the lower cover 300, the upper cover 200 is fastened, and the upper positioning groove is positioned and fitted onto the upper part of the battery module 100. Next, tighten nut 500, causing the upper cover 200 and lower cover 300 to press against each other, thereby applying pressure to the battery module 100 until the battery module 100 is shaped. Then, unscrew nut 500 in the opposite direction and remove the battery module 100. Furthermore, the first threaded connector 400 is a short screw, and nut 500 is a wing nut. Furthermore, multiple first threaded connectors 400 and wing nuts are provided, for example, four distributed circumferentially. Pressure sensors can be installed at corresponding positions, and uniform pressure is ensured by ensuring consistent readings from all pressure sensors.

[0040] Example 5

[0041] Reference Figures 5 to 7 Embodiment 5 of this utility model provides a pressurizing device for pressurizing the aforementioned portable large-size battery module 100. The pressurizing device includes a positioning seat 600 and a pressing block 700. The battery module 100 is positioned between the positioning seat 600 and the pressing block 700. The pressing block 700 can press down towards the positioning seat 600 to pressurize the battery module 100. Figure 5 This is a schematic diagram of a pressurizing device used to pressurize a circular battery. Figure 6 This is a schematic diagram of a pressurizing device used to pressurize a square battery.

[0042] Furthermore, referring to Figure 7The pressurizing device also includes a second threaded connector 800. A positioning hole 610 is provided in the positioning seat 600. The pressure block 700 is provided with a positioning post 710, which is positioned and inserted into the positioning hole 610. The second threaded connector 800 passes through the pressure block 700 and is threaded to the positioning seat 600. When the second threaded connector 800 is screwed into the positioning seat 600, it can drive the pressure block 700 to press down towards the positioning seat 600 to pressurize the battery module 100. During pressurization, the sealing ring 120 is first embedded in the first annular sealing groove 111 of the positive electrode shell 110. Then, the spring sheet 170, gasket 180, positive electrode sheet 130, electrolyte membrane 140 and negative electrode sheet 150 are stacked in sequence to form a complete cell assembly. After that, the cell assembly is placed in the recessed groove 112 inside the positive electrode shell 110 and the negative electrode shell 160 is fastened. Next, the assembled structure is positioned between the positioning seat 600 and the positioning block, and the second threaded connector 800 is screwed in. When the second threaded connector 800 is screwed in, it will press down on the pressure block 700. Positioned by the positioning post 710 and the positioning block, the pressure block 700 will press down towards the positioning seat 600, thus applying pressure to the battery module 100 until the battery module 100 is shaped. Then, the second threaded connector 800 is unscrewed in the opposite direction, and the battery module 100 is removed. Furthermore, the second threaded connector 800 uses a long screw, and the opposing end faces of the positioning seat 600 and the pressure block 700 are provided with buffer pads 900 to protect the battery module 100. Furthermore, both the positioning seat 600 and the pressure block 700 have multiple sets, for example, four sets distributed circumferentially, where pressure sensors can be installed. Consistent readings from all pressure sensors ensure uniform pressure throughout the device.

[0043] This utility model provides various pressurizing devices, all of which can be used in pressurizing devices. The battery module 100 in this utility model adopts a brand-new battery module 100 and pressurizing device, which can effectively solve the problems of poor pressure uniformity, large frame deformation, and inability to adapt to three-stage processes in traditional tablet presses. At the same time, it is not limited by the high mechanical precision requirements, slow response, and lack of gradient compensation algorithm of existing multi-station hydraulic equipment. Improvements are made to the structure of the battery module 100 itself and the matching pressurizing device, filling the market gap for large-capacity, high-reliability, integrated micro power supplies. The battery module pressurized by this pressurizing device can achieve a pressure deviation of <±2% and a frame deformation of <0.03mm within a 100mm size range, and supports one-click process switching.

[0044] It should be noted that in the description of this utility model, any descriptions of orientation, such as up, down, front, back, left, right, etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying 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, be constructed or operated in a specific orientation, and should not be construed as a limitation of this utility model.

[0045] In the description of this utility model, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is mentioned, it is only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0046] 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.

[0047] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A convenient large-size battery module, characterized in that, The device comprises, from bottom to top, a positive electrode shell (110), a sealing ring (120), a positive electrode sheet (130), an electrolyte membrane (140), a negative electrode sheet (150), and a negative electrode shell (160). The positive electrode shell (110) and the negative electrode shell (160) are both sealed and attached to the sealing ring (120). The positive electrode sheet (130), the electrolyte membrane (140), and the negative electrode sheet (150) are stacked tightly in sequence within a receiving groove formed by the positive electrode shell (110), the negative electrode shell (160), and the sealing ring (120).

2. The portable large-size battery module according to claim 1, characterized in that, It also includes a spring sheet (170) and a gasket (180), wherein the spring sheet (170), the gasket (180), the positive electrode sheet (130), the electrolyte membrane (140) and the negative electrode sheet (150) are stacked tightly in sequence in the receiving groove.

3. The portable large-size battery module according to claim 2, characterized in that, The end face of the spring piece (170) is wavy.

4. The portable large-size battery module according to any one of claims 1-3, characterized in that, The positive electrode shell (110) has a first annular sealing groove (111), the negative electrode shell (160) has a second annular sealing groove, and the sealing ring (120) is sealed and elastically connected to the first annular sealing groove (111) and the second annular sealing groove.

5. A pressurizing device, characterized in that, For press-fitting a portable large-size battery module (100) as described in any one of claims 1-4, the pressurizing device includes an upper cover (200) and a lower cover (300), the upper cover (200) and the lower cover (300) being able to position the upper and lower parts of the battery module (100) respectively, and the upper cover (200) being able to press down relative to the lower cover (300) to pressurize the battery module (100).

6. The pressurizing device according to claim 5, characterized in that, The upper cover (200) has an upper positioning groove, and the lower cover (300) has a lower positioning groove (310). The upper positioning groove and the lower positioning groove (310) are respectively used to position the upper and lower parts of the battery module (100).

7. The pressurizing device according to claim 5 or 6, characterized in that, The upper cover (200) is screwed onto the lower cover (300). When the upper cover (200) and the lower cover (300) are screwed together and close to each other, they can pressurize the battery module (100).

8. The pressurizing device according to claim 5 or 6, characterized in that, A first threaded connector (400) is provided between the upper cover (200) and the lower cover (300). A nut (500) is connected to the tail of the first threaded connector (400). When the nut (500) is tightened, the upper cover (200) and the lower cover (300) can be pressed against each other to pressurize the battery module (100).

9. A pressurizing device, characterized in that, For press-fitting a portable large-size battery module (100) as described in any one of claims 1-4, the pressurizing device includes a positioning seat (600) and a pressing block (700), the battery module (100) is positioned between the positioning seat (600) and the pressing block (700), and the pressing block (700) is capable of pressing down toward the positioning seat (600) to pressurize the battery module (100).

10. The pressurizing device according to claim 9, characterized in that, The pressurizing device further includes a second threaded connector (800). The positioning seat (600) has a positioning hole (610). The pressure block (700) has a positioning post (710). The positioning post (710) is positioned and inserted into the positioning hole (610). The second threaded connector (800) passes through the pressure block (700) and is threaded to the positioning seat (600). When the second threaded connector (800) is screwed into the positioning seat (600), it can drive the pressure block (700) to press down toward the positioning seat (600) to pressurize the battery module (100).

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