A large-capacity cylindrical battery grouping structure

Abstract

A large-capacity cylindrical battery grouping structure includes two current-carrying plates, a plurality of battery components, and an electrical connection component: The two current-carrying plates are connected by a bracket and a plurality of mounting grooves are provided on the surfaces thereof; The plurality of battery components are respectively arranged between the plurality of mounting grooves of the two current-carrying plates. Each battery component includes a housing, a cylindrical battery installed inside the housing, an adaptive heat dissipation module and an adaptive heating module arranged on the periphery of the cylindrical battery. The adaptive heat dissipation module and the adaptive heating module are respectively used to automatically dissipate heat and heat according to the temperature of the cylindrical battery; The electrical connection component is used to connect a plurality of cylindrical batteries so that the plurality of cylindrical batteries are connected in series and / or in parallel. The present invention can adaptively regulate the cooling and heating of each cylindrical battery, thereby ensuring the temperature consistency of the plurality of cylindrical batteries, enabling each cylindrical battery to work under the most suitable temperature conditions, improving the use performance of the cylindrical battery, and prolonging the service life.

Description

Technical Field

[0001] The present invention relates to the technical field of battery devices, and particularly relates to a large-capacity cylindrical battery grouping structure. Background Art

[0002] With the rapid development of electric vehicles and energy storage technologies, the demand for battery systems is increasing continuously. Most of the existing battery grouping structures adopt an overall cooling method, that is, heat dissipation is achieved by circulating a cooling plate or a coolant throughout the battery pack. Although this method can reduce the temperature of the battery pack to a certain extent, due to the inconsistent heat generation of battery monomers during charge and discharge, the temperature distribution inside the battery pack is uneven, and local overheating is likely to occur, thereby affecting the battery life and safety.

[0003] For large-capacity cylindrical batteries, due to their relatively large monomer volume, heat is not easily dissipated, and the temperature rises rapidly during high-rate charge and discharge. The existing cooling technologies are difficult to effectively control the temperature of each battery monomer, resulting in inconsistent operating temperatures of the monomers in the battery pack. This not only reduces the overall performance of the battery but also may cause potential safety hazards such as thermal runaway. Therefore, it is particularly urgent and important to develop a battery grouping structure that can effectively regulate the temperature of each battery monomer. Summary of the Invention

[0004] The present invention provides a large-capacity cylindrical battery grouping structure to solve the technical problems mentioned in the background art.

[0005] To achieve the above object, the technical solution of the present invention is realized as follows:

[0006] The present invention provides a large-capacity cylindrical battery grouping structure, comprising:

[0007] Two flow guide plates, which are connected by a bracket and have a plurality of installation grooves on the opposite surfaces of the two flow guide plates;

[0008] A plurality of battery assemblies, which are respectively arranged between the plurality of installation grooves of the two flow guide plates. Each battery assembly includes a housing, a cylindrical battery installed inside the housing, an adaptive heat dissipation module and an adaptive heating module arranged on the periphery of the cylindrical battery. The adaptive heat dissipation module and the adaptive heating module are respectively used to automatically dissipate heat and heat according to the temperature of the cylindrical battery;

[0009] An electrical connection component, which is used to electrically connect a plurality of cylindrical batteries so that the plurality of cylindrical batteries are connected in series and / or in parallel.

[0010] Further, the adaptive heat dissipation module includes:

[0011] The piston is slidably connected in the chute of the temperature sensing cavity at the top of the housing. The temperature sensing cavity is filled with a phase change material. When the heat conduction of the cylindrical battery causes the internal temperature of the temperature sensing cavity to rise, it will push the piston to slide away from the water inlet opened at the top of the housing, so as to gradually increase the caliber of the water inlet, thereby increasing the flow rate of the coolant flowing in through the water inlet and discharged through the water outlet opened at the bottom of the housing.

[0012] Furthermore, the adaptive heat dissipation module further includes a spiral pipe coiled around the outer wall of the cylindrical battery, and the head and tail ends of the spiral pipe are respectively communicated with the water inlet and the water outlet.

[0013] Furthermore, the adaptive heating module includes:

[0014] A first metal sheet, connected to the positive electrode of the cylindrical battery;

[0015] A second metal sheet, embedded at a set position of the piston;

[0016] A heating wire, coiled around the outer circle of the cylindrical battery. One end of the heating wire is conducted with the second metal sheet, and the other end is conducted with the negative electrode of the cylindrical battery through a heating wire connector. When the temperature of the cylindrical battery is lower than the set temperature, the phase change material inside the temperature sensing cavity contracts in volume when it gets cold and pushes the piston to slide towards the water inlet direction until the heating wire connector, the first metal sheet, and the second metal sheet are conducted. The heating wire continuously generates heat under the power supply of the cylindrical battery, so as to automatically increase the surface temperature of the cylindrical battery.

[0017] Furthermore, the shape of the heating wire is spiral.

[0018] Furthermore, the adaptive heating module further includes:

[0019] A buckle, one end is connected to the bottom of the heating wire, and the other end is communicated with the negative electrode of the cylindrical battery. The material of the buckle is the same as that of the fuse.

[0020] Furthermore, conduction water inlets and vein-shaped flow paths communicated with the conduction water inlets are opened on the inner sides of the flow guiding plates, and the vein-shaped flow paths are communicated with a plurality of water inlets or a plurality of water outlets.

[0021] Furthermore, the electrical connection component includes:

[0022] A plurality of positive electrode connection metal sheets, arranged at the positive electrode positions of a plurality of cylindrical batteries, responsible for electrically connecting the positive electrodes of adjacent cylindrical batteries;

[0023] A plurality of negative electrode connection metal sheets, arranged at the negative electrode positions of a plurality of cylindrical batteries, responsible for electrically connecting the negative electrodes of adjacent cylindrical batteries.

[0024] Furthermore, the cylindrical battery group structure further includes:

[0025] A box body, with an accommodation space formed inside, two flow guiding plates and multiple battery modules are all placed in the accommodation space of the box body;

[0026] A box cover, detachably installed on the top of the box body.

[0027] Furthermore, the cylindrical battery grouping structure further includes a main electrode installed on the outer wall of the box body;

[0028] The main electrode includes a main positive electrode and a main negative electrode. The positive and negative electrodes of multiple cylindrical batteries are respectively connected to the main positive electrode and the main negative electrode through multiple positive electrode connecting metal sheets and multiple negative electrode connecting metal sheets.

[0029] Advantages of the present invention:

[0030] 1. The adaptive heat dissipation module in the present invention cleverly utilizes the principle of thermal expansion and contraction and the pressure difference between the atmospheric pressure inside the temperature sensing cavity and the external atmospheric pressure. When the temperature of the cylindrical battery is higher than the set temperature, it will cause the piston to slide away from the water inlet direction, and adjust the temperature of the cylindrical battery through the adaptive heat dissipation module; when the temperature of the cylindrical battery is lower than the set temperature, it will cause the piston to slide towards the water inlet direction until the adaptive heating module is turned on and the cylindrical battery is heated; the power for the piston to slide comes from the thrust converted by the pressure difference between the atmospheric pressure inside the temperature sensing cavity and the external atmospheric pressure, without the need for external energy supply, which is more energy-saving and environmentally friendly.

[0031] 2. Compared with traditional batteries, the present invention adds an adaptive heat dissipation module and an adaptive heating module. Through the combination of the adaptive heat dissipation module and the adaptive heating module, the temperature of each cylindrical battery can be optimally controlled.

[0032] In addition, by adding an adaptive heat dissipation module and an adaptive heating module, each cylindrical battery is always in an ideal temperature range, avoiding the cylindrical battery from being burned due to too high temperature, even the entire device, and at the same time avoiding the cylindrical battery from not operating properly due to too low temperature. Therefore, by adding an adaptive heat dissipation module and an adaptive heating module, the service life of the cylindrical battery and the entire device is also extended, and at the same time, it is ensured that the cylindrical battery can operate normally.

[0033] 3. The adaptive heat dissipation module corresponding to each cylindrical battery in the present invention operates independently, which is convenient for replacing and repairing a single cylindrical battery when a failure occurs, reducing the maintenance cost and time. The independent design of the adaptive heat dissipation module also makes the cylindrical battery grouping structure more flexible, and can be modularly adjusted and expanded according to different application scenarios to meet diverse market demands.

[0034] 4. The present invention can regulate the temperature of each cylindrical battery, ensuring that each cylindrical battery operates within the optimal temperature range, and improving the overall performance and safety of the battery pack. This design realizes precise cooling of each battery cell by arranging independent adaptive heat dissipation modules around each cylindrical battery. The adaptive heat dissipation module can adopt various methods such as liquid cooling or phase change materials and can be flexibly configured according to actual needs.

[0035] In addition, by the combined use of the adaptive heat dissipation module and the adaptive heating module, the present invention can keep the temperatures of the cylindrical batteries consistent. This design can not only effectively prevent local overheating within the battery pack (composed of multiple cylindrical batteries), extend the lifespan of the cylindrical batteries, but also ensure the safety of the battery pack under extreme working conditions. In addition, this structure also has significant advantages in terms of assembly and maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 Schematic diagram of the connection between multiple cylindrical batteries and two flow guiding plates in the present invention;

[0037] Figure 2 is Figure 1 Schematic diagram in the top view direction;

[0038] Figure 3 Schematic diagram of the vein-like flow path on the inner side of the flow guiding plate in the present invention;

[0039] Figure 4 Exploded view of the connection between multiple cylindrical batteries and two flow guiding plates in the present invention;

[0040] Figure 5 Enlarged view of the structural schematic diagram of the battery assembly in the present invention;

[0041] Figure 6 Enlarged top view of the battery assembly in the present invention;

[0042] Figure 7 Enlarged bottom view of the battery assembly in the present invention;

[0043] Figure 8 Enlarged exploded view of the connection between the battery assembly and the heating wire in the present invention;

[0044] Figure 9 Enlarged cross-sectional view of the battery assembly in the present invention;

[0045] Figure 10 is Figure 9 Partial enlarged schematic diagram;

[0046] Figure 11 Enlarged view of the internal structure schematic diagram of the temperature sensing cavity at the top of the housing in the present invention;

[0047] Figure 12 is Figure 11 a partially enlarged schematic view;

[0048] Figure 13 is a schematic connection diagram of the lid, the box body and the main electrode in the present invention.

[0049] Description of reference numerals:

[0050] 1. Housing; 2. Water inlet; 3. Water outlet; 4. Limiting protrusion; 5. Pressure vent hole; 6. Cylindrical battery; 7. Heating wire; 8. Heating wire connector; 9. First metal sheet; 10. Second metal sheet; 11. Piston; 12. Temperature sensing chamber; 13. Spiral pipeline; 14. Deflector; 15. Conducting water port; 16. Installation groove; 17. Water passing port; 18. Vein-shaped flow path; 19. Positive electrode connecting metal sheet; 20. Negative electrode connecting metal sheet; 21. Lid; 22. Box body; 23. Main electrode; 24. Buckle. Detailed implementation manners

[0051] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. The preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many other different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0052] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0053] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be understood as a limitation of the present invention.

[0054] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined.

[0055] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this invention belongs. The terms used in the description of the present invention herein are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0056] It should also be noted that in the embodiments of the present application, the same reference numerals are used to denote the same components or the same parts. For the same parts in the embodiments of the present application, only one of the parts or components may be marked with a reference numeral in the figure. It should be understood that the reference numerals are equally applicable to other identical parts or components.

[0057] Referring to Figures 1 to 4 , the embodiments of the present application provide a large-capacity cylindrical battery grouping structure, including:

[0058] Two current collector plates 14, which are connected by a bracket and have a plurality of mounting grooves 16 formed on the opposite surfaces of the two current collector plates 14;

[0059] A plurality of battery modules, which are respectively arranged between the plurality of mounting grooves 16 of the two current collector plates 14. Each battery module includes a housing 1, a cylindrical battery 6 installed inside the housing 1, an adaptive heat dissipation module and an adaptive heating module arranged on the periphery of the cylindrical battery 6. The adaptive heat dissipation module and the adaptive heating module are respectively used to automatically dissipate heat and heat according to the temperature of the cylindrical battery 6;

[0060] Referring to Figure 5 and Figure 6 , vertical strip-shaped limiting protrusions 4 are formed on the side surface of the cylindrical battery 6. The cylindrical battery 6 is clamped between the mounting grooves 16 of the two current collector plates 14 through the limiting protrusions 4, so as to realize rapid and accurate positioning of the plurality of cylindrical batteries 6, and improve the installation efficiency of the plurality of cylindrical batteries 6 on the premise of ensuring the accurate installation of the cylindrical battery 6.

[0061] A plurality of pressure ventilation holes 5 are formed at the top of the housing 1. The outside air communicates with the temperature sensing cavity 12 at the top of the housing 1 through the plurality of pressure ventilation holes 5. The number of the pressure ventilation holes 5 is preferably two, and the diameter is 1-2 mm.

[0062] An electrical connection assembly, which is used to electrically connect the plurality of cylindrical batteries 6 so that the plurality of cylindrical batteries 6 are connected in series and / or in parallel.

[0063] Referring to Figures 10 to 12 , in some embodiments, the adaptive heat dissipation module includes:

[0064] The piston 11 is slidably connected to the chute of the temperature sensing chamber 12 at the top of the housing 1. The temperature sensing chamber 12 is filled with a phase change material. When the external temperature of the cylindrical battery 6 rises and causes the temperature of the phase change material inside the temperature sensing chamber 12 through heat conduction, as Figure 11 shown in Figure 11 , there are two areas, area A and area B, set in the figure. When the phase change material is heated and expands in volume, the atmospheric pressure inside the temperature sensing chamber 12 becomes greater than the atmospheric pressure outside. At this moment, the piston 11 will receive a thrust away from the water inlet 2. The piston 11 will slide in the direction away from the water inlet 2 opened at the top of the housing 1, that is, the piston 11 slides towards area A, so as to gradually increase the caliber of the water inlet 2, thereby increasing the flow rate of the coolant flowing in through the water inlet 2 and discharged through the water outlet 3 opened at the bottom of the housing 1.

[0065] Conversely, when the temperature of the cylindrical battery 6 decreases, the temperature inside the temperature sensing chamber 12 also continuously decreases. At this moment, the phase change material filled inside the temperature sensing chamber 12 gradually decreases in volume when cooled, making the atmospheric pressure inside the temperature sensing chamber 12 less than the atmospheric pressure outside. The piston 11 will receive a thrust towards the water inlet 2. The piston 11 will slide in the direction of the water inlet 2 opened at the top of the housing 1, that is, slide towards area B. A part of the piston 11 gradually extends into the water inlet 2, making the caliber of the water inlet 2 gradually decrease, thereby reducing the flow rate of the coolant flowing in through the water inlet 2 and discharged through the water outlet 3 opened at the bottom of the housing 1, until a part of the piston 11 completely blocks the water inlet 2. At this moment, the coolant will not be able to pass through the water inlet 2.

[0066] In the present invention, through optimized design, including parameters such as the filling amount of the phase change material, the shape of the piston 11, and the internal space size of the temperature sensing chamber 12, after optimizing these parameters, the heat dissipation effect of each cylindrical battery 6 can be adaptively adjusted by the adaptive heat dissipation module, and the temperature of each cylindrical battery 6 can be maintained within the optimal temperature range.

[0067] In addition, the adaptive heat dissipation module in the present invention cleverly utilizes the principle of thermal expansion and contraction and the pressure difference between the atmospheric pressure inside the temperature sensing chamber 12 and the atmospheric pressure outside. When the temperature of the cylindrical battery 6 is higher than the set temperature, it will cause the piston 11 to slide in the direction away from the water inlet 2, and adjust the temperature of the cylindrical battery 6 through the adaptive heat dissipation module; when the temperature of the cylindrical battery 6 is lower than the set temperature, it will cause the piston 11 to slide in the direction towards the water inlet 2 until the adaptive heating module is activated and the cylindrical battery 6 is heated; the power for the piston 11 to slide comes from the thrust converted from the pressure difference between the atmospheric pressure inside the temperature sensing chamber 12 and the atmospheric pressure outside, without the need for external energy supply, which is more energy-saving and environmentally friendly.

[0068] In the present invention, the adaptive heat dissipation module corresponding to each cylindrical battery 6 operates independently. This facilitates the replacement and repair of a single cylindrical battery 6 when a fault occurs in the cylindrical battery 6, reducing the maintenance cost and time. The independent design of the adaptive heat dissipation module also makes the grouped structure of the cylindrical batteries 6 more flexible, allowing for modular adjustment and expansion according to different application scenarios to meet diverse market demands.

[0069] Referring to Figure 9 , in some embodiments, the adaptive heat dissipation module further includes a spiral pipe 13 spirally wound around the outer wall of the cylindrical battery 6. The head and tail ends of the spiral pipe 13 are respectively connected to the water inlet 2 and the water outlet 3. By setting the spiral pipe 13 to be spiral and winding it around the outer wall of the cylindrical battery 6, the contact area between the coolant and the outer wall of the cylindrical battery 6 is increased, improving the heat dissipation effect of the coolant on the cylindrical battery 6.

[0070] Referring to Figures 10 to 12 , in some embodiments, the adaptive heating module includes:

[0071] A first metal sheet 9, connected to the positive electrode of the cylindrical battery 6;

[0072] A second metal sheet 10, embedded at a set position of the piston 11;

[0073] A heating wire 7, wound around the outer circle of the cylindrical battery 6. One end of the heating wire 7 is electrically connected to the second metal sheet 10, and the other end is electrically connected to the negative electrode of the cylindrical battery 6 through a heating wire connector 8. When the temperature of the cylindrical battery 6 is lower than the set temperature, the phase change material inside the temperature sensing cavity 12 contracts in volume when cooled and pushes the piston 11 to slide towards the water inlet 2 until the heating wire connector 8, the first metal sheet 9, and the second metal sheet 10 are electrically connected. The heating wire 7 continuously generates heat under the power supply of the cylindrical battery 6, thereby automatically increasing the surface temperature of the cylindrical battery 6.

[0074] During use, when the external temperature drops and the temperature of the cylindrical battery 6 is lower than the set temperature, at this moment, a part of the piston 11 completely blocks the water inlet 2, and the coolant will not be able to pass through the water inlet 2. At the same time, the second metal sheet 10 installed on the piston 11 will be electrically connected to the first metal sheet 9 installed on the inner wall of the temperature sensing cavity 12. At this moment, one end of the heating wire 7 is electrically connected to the positive electrode of the cylindrical battery 6 through the first metal sheet 9 and the second metal sheet 10, and the other end of the heating wire 7 is electrically connected to the negative electrode of the cylindrical battery 6 through the heating wire connector 8. The heating wire 7 is energized and heats the outer wall of the cylindrical battery 6 until the temperature of the cylindrical battery 6 is higher than the set temperature, the piston 11 will slide in the direction away from the water inlet 2 opened at the top of the housing 1, the second metal sheet 10 is disconnected from the first metal sheet 9, and the heating wire 7 is disconnected and stops heating.

[0075] Compared with traditional batteries, the present invention adds an adaptive heat dissipation module and an adaptive heating module. Through the combination of the adaptive heat dissipation module and the adaptive heating module, the temperature of each cylindrical battery 6 can be optimally controlled.

[0076] In addition, by adding the adaptive heat dissipation module and the adaptive heating module, each cylindrical battery 6 is always in an ideal temperature range, avoiding the cylindrical battery 6 from being burned due to excessive temperature, and even the entire device being burned. At the same time, it also avoids the cylindrical battery 6 from not operating properly due to too low temperature. Therefore, by adding the adaptive heat dissipation module and the adaptive heating module, the service life of the cylindrical battery 6 and the entire device is also improved, and at the same time, it ensures that the cylindrical battery 6 can operate normally.

[0077] Refer to Figure 8 In some embodiments, the heating wire 7 is in a spiral shape. In this embodiment, the heating wire 7 is set in a spiral shape and wound around the outer wall of the cylindrical battery 6, which can increase the contact area between the heating wire 7 and the outer wall of the cylindrical battery 6, thereby improving the heating effect of the heating wire 7 on the cylindrical battery 6.

[0078] Refer to Figure 7 In some embodiments, the adaptive heating module further includes:

[0079] A buckle 24, one end is connected to the bottom of the heating wire 7, and the other end is connected to the negative electrode of the cylindrical battery 6. The material of the buckle 24 is the same as that of the fuse. In this embodiment, the buckle 24 is added, and the material of the buckle 24 is the same as that of the fuse. When the current of the heating wire 7 is too large, the buckle 24 will melt, thereby protecting the cylindrical battery 6 and the entire device, and avoiding the cylindrical battery 6 and the entire device from being burned due to the excessive current of the heating wire 7.

[0080] Refer to Figure 3 In some embodiments, conduction water inlets 15 and vein-shaped flow paths 18 communicating with the conduction water inlets 15 are provided on the inner sides of the flow guiding plates 14. The vein-shaped flow paths 18 are communicated with a plurality of water inlets 2 or a plurality of water outlets 3 through water passing openings 17 provided on the housing 1.

[0081] Refer to Figure 4 In some embodiments, the electrical connection assembly includes:

[0082] A plurality of positive electrode connecting metal sheets 19 are arranged at the positive electrode positions of a plurality of cylindrical batteries 6, and are responsible for electrically connecting the positive electrodes of adjacent cylindrical batteries 6;

[0083] A plurality of negative electrode connecting metal sheets 20 are arranged at the negative electrode positions of a plurality of cylindrical batteries 6, and are responsible for electrically connecting the negative electrodes of adjacent cylindrical batteries 6.

[0084] Reference Figure 13 , in some embodiments, the cylindrical battery grouping structure further includes:

[0085] A box body 22, with an accommodation space formed inside, and two current guiding plates 14 and a plurality of battery components are all placed in the accommodation space of the box body 22;

[0086] A box cover 21, detachably installed on the top of the box body 22.

[0087] In some embodiments, the cylindrical battery grouping structure further includes a total electrode 23 installed on the outer wall of the box body 22;

[0088] The total electrode 23 includes a total positive electrode and a total negative electrode, and the positive and negative electrodes of a plurality of cylindrical batteries 6 are respectively connected to the total positive electrode and the total negative electrode through a plurality of positive electrode connecting metal sheets 19 and a plurality of negative electrode connecting metal sheets 20.

[0089] As described above, the above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Moreover, the technical solutions between various embodiments of the present invention can be combined with each other, but it must be based on the fact that those skilled in the art can implement it. When the combination of technical solutions appears to be contradictory or unable to be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A large-capacity cylindrical battery grouping structure, characterized in that, Including: Two flow guiding plates (14), which are connected by a bracket and multiple mounting grooves (16) are formed on the opposite surfaces of the two flow guiding plates (14); Multiple battery modules, which are respectively arranged between the multiple mounting grooves (16) of the two flow guiding plates (14), and each battery module includes a housing (1), a cylindrical battery (6) installed inside the housing (1), an adaptive heat dissipation module and an adaptive heating module arranged on the periphery of the cylindrical battery (6), and the adaptive heat dissipation module and the adaptive heating module are respectively used for automatically dissipating heat and heating according to the temperature of the cylindrical battery (6); the adaptive heat dissipation module corresponding to each cylindrical battery (6) operates independently; An electrical connection component, which is used for electrically connecting the multiple cylindrical batteries (6) so that the multiple cylindrical batteries (6) are connected in series and / or in parallel; The adaptive heat dissipation module includes: A piston (11), which is slidably connected in a chute of a temperature sensing cavity (12) at the top of the housing (1), a phase change material is filled in the temperature sensing cavity (12), and after the temperature inside the temperature sensing cavity (12) rises due to the heat conduction of the cylindrical battery (6), the piston (11) will be pushed to slide away from the water inlet (2) opened at the top of the housing (1), so that the caliber of the water inlet (2) gradually increases, thereby increasing the flow rate of the coolant flowing in through the water inlet (2) and discharged through the water outlet (3) opened at the bottom of the housing (1); The adaptive heat dissipation module further includes a spiral pipe (13) spirally wound around the outer wall of the cylindrical battery (6), and the head and tail ends of the spiral pipe (13) are respectively communicated with the water inlet (2) and the water outlet (3); When the temperature of the cylindrical battery (6) decreases, the temperature inside the temperature sensing cavity (12) also continuously decreases. At this moment, the volume of the phase change material filled in the temperature sensing cavity (12) gradually becomes smaller when it gets cold, so that the atmospheric pressure inside the temperature sensing cavity (12) is less than the atmospheric pressure outside, and the piston (11) will receive a thrust towards the water inlet (2), and the piston (11) will slide towards the water inlet (2) opened at the top of the housing (1), and a part of the piston (11) gradually extends into the water inlet (2), so that the caliber of the water inlet (2) gradually decreases, thereby reducing the flow rate of the coolant flowing in through the water inlet (2) and discharged through the water outlet (3) opened at the bottom of the housing (1), until a part of the piston (11) completely blocks the water inlet (2). At this moment, the coolant will not be able to pass through the water inlet (2); The adaptive heating module includes: A first metal sheet (9), which is connected to the positive electrode of the cylindrical battery (6); A second metal sheet (10), which is embedded at a set position of the piston (11); The heating wire (7) is wound around the outer circumference of the cylindrical battery (6). One end of the heating wire (7) is electrically connected to the second metal sheet (10), and the other end is electrically connected to the negative electrode of the cylindrical battery (6) through the heating wire connector (8). When the temperature of the cylindrical battery (6) is lower than the set temperature, the phase change material inside the temperature sensing cavity (12) contracts in volume when cooled and pushes the piston (11) to slide towards the water inlet (2) until the heating wire connector (8), the first metal sheet (9), and the second metal sheet (10) are electrically connected. The heating wire (7) continuously generates heat under the power supply of the cylindrical battery (6), thereby automatically increasing the surface temperature of the cylindrical battery (6).

2. The large-capacity cylindrical battery grouping structure according to claim 1, characterized in that The shape of the heating wire (7) is spiral.

3. The large-capacity cylindrical battery grouping structure according to claim 1, wherein The adaptive heating module further includes: A buckle (24), one end of which is connected to the bottom of the heating wire (7), and the other end is connected to the negative electrode of the cylindrical battery (6). The material of the buckle (24) is the same as that of the fuse.

4. The large-capacity cylindrical battery grouping structure according to claim 1, wherein, On the inner side of the flow guide plate (14), a conduction water port (15) and a vein-shaped flow path (18) communicated with the conduction water port (15) are provided. The vein-shaped flow path (18) is communicated with a plurality of water inlets (2) or a plurality of water outlets (3).

5. The large-capacity cylindrical battery grouping structure according to claim 1, characterized in that, The electrical connection component includes: A plurality of positive electrode connection metal sheets (19) are arranged at the positive electrode positions of a plurality of cylindrical batteries (6) and are responsible for electrically connecting the positive electrodes of adjacent cylindrical batteries (6). A plurality of negative electrode connection metal sheets (20) are arranged at the negative electrode positions of a plurality of cylindrical batteries (6) and are responsible for electrically connecting the negative electrodes of adjacent cylindrical batteries (6).

6. The large-capacity cylindrical battery grouping structure according to claim 5, characterized in that, It further includes: A box body (22) with an accommodation space formed inside. Two flow guide plates (14) and a plurality of battery assemblies are all placed in the accommodation space of the box body (22). A box cover (21) is detachably installed on the top of the box body (22).

7. The large-capacity cylindrical battery grouping structure according to claim 6, characterized in that, It further includes a main electrode (23) installed on the outer wall of the box body (22). The main electrode (23) includes a main positive electrode and a main negative electrode. The positive and negative electrodes of a plurality of cylindrical batteries (6) are respectively communicated with the main positive electrode and the main negative electrode through a plurality of positive electrode connection metal sheets (19) and a plurality of negative electrode connection metal sheets (20).

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