New cylindrical battery cell module and battery cell module stacking method

Abstract

The present application relates to the technical field of batteries. Disclosed are a new cylindrical battery cell module and a battery cell module stacking method. The new cylindrical battery cell module comprises an outer case, battery cell assemblies and a liquid cooling mechanism, wherein a plurality of battery cell assemblies are arranged inside the outer case, adjacent battery cell assemblies being connected to each other via structural adhesive; the liquid cooling mechanism is arranged in each battery cell assembly or between every two adjacent battery cell assemblies; and a plurality of lifting holes are provided on the outer wall of the outer case. In the present application, the battery cell module comprises a plurality of stacked battery cell assemblies, which are connected to each other via structural adhesive, thereby improving the strength of the battery cell module, while also avoiding common technical defects in the foam adhesive process such as adhesive leakage, adhesive overflow, and low pass rates in foam quality.

Description

A new cylindrical battery cell module and a battery cell module stacking method

[0001] The present application claims priority to the patent application with the application date of September 6, 2024, the application number of 202411250882.7, and the invention name of "A new cylindrical battery cell module". TECHNICAL FIELD

[0002] The present application relates to the technical field of batteries, in particular to a new cylindrical battery cell module and a battery cell module stacking method. BACKGROUND

[0003] Lithium ion batteries have the advantages of light weight, large energy storage, large power, no pollution, long service life, small self-discharge coefficient, wide temperature adaptation range, etc., so they are gradually favored by people and gradually replace other traditional batteries in the field of energy storage and power batteries. Cylindrical lithium batteries have the characteristics of high production efficiency, low production cost, and good product consistency, so they occupy a large market share in the market.

[0004] On the vehicle-mounted PACK, in order to facilitate manufacturing, the technology of modularization of the module is often used. However, based on the characteristics of cylindrical lithium batteries, the structure of the module is relatively complex, the assembly process is complex, the assembly efficiency is low, and the quality effect is not good. In the prior art, the adhesive process of filling foam glue inside the module is often used, which not only has high equipment investment cost, but also has the problems of unsatisfactory bonding strength, poor module structure strength, inability to set reliable hanging points, easy glue leakage / overflow, low quality rate of foaming, and difficulty in achieving structural design. SUMMARY

[0005] The purpose of the present application is to provide a new cylindrical battery cell module and a battery cell module stacking method to solve the above technical problems.

[0006] The technical solution adopted by the present application is as follows:

[0007] A new cylindrical battery cell module, comprising an outer shell, a battery cell assembly and a liquid cooling mechanism, the inside of the outer shell is provided with a plurality of battery cell assemblies, two adjacent battery cell assemblies are connected by structural glue, and each battery cell assembly or two adjacent battery cell assemblies are provided with a liquid cooling mechanism, and the outer wall of the outer shell is provided with a plurality of lifting holes.

[0008] In some embodiments, the outer shell comprises an integrated cover plate and a side plate, one side plate is arranged on both sides of the integrated cover plate, and a cavity for mounting the battery cell assembly is formed between the integrated cover plate and the side plate.

[0009] In some embodiments, the side plate is provided with a weight-reducing hole, the lifting hole and the mounting hole, and the side plate is further provided with a flange wall at both ends and the bottom.

[0010] In some embodiments, two of the plurality of cell assemblies are first cell assemblies, and the rest of the plurality of cell assemblies are second cell assemblies, the plurality of second cell assemblies are arranged between the two first cell assemblies, the first cell assembly comprises an outer support, a first rib and a first insert, one side of the outer support is provided with a plurality of first mounting slots arranged along the length direction of the outer support, both ends of the first mounting slot are provided with the first rib, both ends of the outer support are provided with the first insert, and the first insert is connected with the outer shell.

[0011] In some embodiments, the new cylindrical cell module further comprises a first connecting hole, and the other side of the outer support is provided with a plurality of first connecting holes.

[0012] In some embodiments, the second cell assembly comprises a first inner support, a second inner support and a second rib, the first inner support, the second inner support and the outer support are connected by structural glue, both sides of the first inner support and both sides of the second inner support are provided with a plurality of second mounting slots, both ends of each second mounting slot are provided with the second rib, and installation cavities are formed between the first mounting slot and the second mounting slot and between two opposite second mounting slots.

[0013] In some embodiments, the new cylindrical cell module further comprises a cell, and each installation cavity is provided with the cell.

[0014] In some embodiments, the new cylindrical cell module further comprises a second insert, and both ends of the first inner support or the second inner support are provided with the second insert, and the second insert is connected with the outer shell.

[0015] In some embodiments, the liquid cooling mechanism comprises a liquid cooling belt, a water inlet pipe and a water outlet pipe, the liquid cooling belt is installed in the cell assembly, the water inlet pipe and the water outlet pipe are installed on the side plate, the water inlet pipe is connected with the water inlet of the liquid cooling belt, and the water outlet pipe is connected with the water outlet of the liquid cooling belt.

[0016] In some embodiments, a first pressure relief hole is formed in the first inner support and / or the second inner support.

[0017] In some embodiments, the integrated cover plate and the side plate are made of metal material.

[0018] In some embodiments, the outer support, the first inner support and the second inner support are made of plastic.

[0019] A cell module stacking method for forming the novel cylindrical cell module as described above, comprising: S1: placing an outer support; S2: inserting a cell into each of the first installation slots of the outer support from top to bottom, and bonding the bottom of the cell to the inner wall of the corresponding first installation slot to form a first stacked structure, wherein the bottom of the cell is glued before being inserted into the first installation slot; S3: gluing the top of each of the cells in the first stacked structure; S4: stacking a first inner support above the first stacked structure, and making the second installation slots at the bottom of the first inner support correspondingly inserted into each of the cells in the first stacked structure from top to bottom, and bonding the top of the cell to the inner wall of the corresponding second installation slot; S5: inserting a cell into each of the second installation slots at the top of the first inner support from top to bottom, and bonding the bottom of the cell to the inner wall of the corresponding second installation slot to form a second stacked structure, wherein the bottom of the cell is glued before being inserted into the second installation slot; S6: gluing the top of each of the cells in the second stacked structure; S7: stacking a second inner support above the second stacked structure, and making the second installation slots at the bottom of the second inner support correspondingly inserted into each of the cells in the second stacked structure from top to bottom, and bonding the top of the cell to the inner wall of the corresponding second installation slot; S8: inserting a cell into each of the second installation slots at the top of the second inner support from top to bottom, and bonding the cell to the inner wall of the corresponding second installation slot to form a third stacked structure, wherein the bottom of the cell is glued before being inserted into the second installation slot; S9: gluing the top of each of the cells in the third stacked structure; and S10: repeating the above steps S4 to S8 for a predetermined number of times.

[0020] The above technical solution has the following advantages or beneficial effects:

[0021] In the present application, the cell module comprises a plurality of stacked cell assemblies, and the cell assemblies are connected by structural glue, which can improve the strength of the cell module, and also avoids the technical defects of foaming glue process such as glue leakage, glue overflow, and low yield of foaming quality; through the setting of the lifting hole, flexible lifting in the manufacturing process is facilitated; through the setting of the first pressure relief hole, the safety of the product can be improved. The present application can realize the structural expansion of different power modules by increasing or reducing the number of layers; the present application adopts a simple and mature part structure design and manufacturing process, and can realize automatic manufacturing. BRIEF DESCRIPTION OF DRAWINGS

[0022] FIG. 1 is a structural schematic diagram of a novel cylindrical cell module in an embodiment of the present application;

[0023] Figure 2 is a structural schematic diagram of a new cylindrical battery cell module in one embodiment of the present application;

[0024] Figure 3 is an exploded schematic diagram of a new cylindrical battery cell module in one embodiment of the present application;

[0025] Figure 4 is a structural schematic diagram of a side plate in the present application;

[0026] Figure 5 is an exploded schematic diagram of a new cylindrical battery cell module in one embodiment of the present application;

[0027] Figure 6 is a structural schematic diagram of an outer support in the present application;

[0028] Figure 7 is a structural schematic diagram of a first inner support in the present application;

[0029] Figure 8 is a structural schematic diagram of a second inner support in the present application;

[0030] Figure 9 is a structural schematic diagram of a new cylindrical battery cell module in another embodiment of the present application.

[0031] In the figure: 1, outer shell; 102, integrated cover plate; 103, side plate; 104, weight-reducing hole; 105, hoisting hole; 106, mounting hole; 107, flange wall; 2, battery cell assembly; 201, outer support; 202, first rib; 203, first insert; 204, first mounting groove; 205, first connecting hole; 206, first inner support; 207, second inner support; 208, second rib; 209, second mounting groove; 210, second insert; 211, battery cell; 212, first pressure relief hole; 213, second pressure relief hole; 3, liquid cooling mechanism; 301, liquid cooling belt; 302, water inlet pipe; 303, water outlet pipe. DETAILED DESCRIPTION

[0032] The technical solutions of the present application will be described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0033] In the description of the present application, it should be explained that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like appear, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, if the terms "first", "second", "third" appear, they are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0034] In the description of the present application, it should be explained that, unless otherwise explicitly specified and limited, if the terms "mounting", "connecting", "connecting" appear, they should be understood in a broad sense, for example, they can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or indirectly connected through an intermediate medium; can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] Fig. 1 is a structural schematic diagram of a new cylindrical battery cell module in one embodiment of the present application; Fig. 2 is a structural schematic diagram of a new cylindrical battery cell module in one embodiment of the present application; Fig. 3 is an exploded schematic diagram of a new cylindrical battery cell module in one embodiment of the present application; Fig. 4 is a structural schematic diagram of a side plate in the present application; Fig. 5 is an exploded schematic diagram of a new cylindrical battery cell module in one embodiment of the present application; Fig. 6 is a structural schematic diagram of an outer support in the present application; Fig. 7 is a structural schematic diagram of a first inner support in the present application; Fig. 8 is a structural schematic diagram of a second inner support in the present application, please see Figs. 1 to 8, the present application provides a new cylindrical battery cell module, which comprises an outer shell 1, a battery cell assembly 2 and a liquid cooling mechanism 3, a plurality of battery cell assemblies 2 are arranged in the inner part of the outer shell 1, two adjacent battery cell assemblies 2 are connected by structural glue, and one liquid cooling mechanism 3 is arranged in each battery cell assembly 2 or between two adjacent battery cell assemblies 2. A plurality of lifting holes 105 are arranged on the outer wall of the outer shell 1. In the present embodiment, the liquid cooling mechanism 3 arranged is used for heat dissipation inside the battery cell module, and the outer shell 1 is used for protecting the battery cell module and limiting the battery cell module in a cavity. A plurality of battery cell assemblies 2 are arranged, and the plurality of battery cell assemblies 2 are stacked and arranged, two adjacent battery cell assemblies 2 are connected by structural glue, instead of the traditional "foaming glue pouring and sealing in the module box" process, which not only can effectively improve the strength of the module, but also can avoid the technical defects such as glue leakage, glue overflow and low foaming quality rate of the foaming glue process. The arrangement of the lifting hole 105 facilitates flexible lifting in the manufacturing process.

[0036] In one embodiment, the outer shell 1 comprises an integrated cover plate 102, and a side plate 103 arranged on both sides of the integrated cover plate 102, and a cavity for mounting the battery cell assembly 2 is formed between the integrated cover plate 102 and the side plate 103. In this embodiment, the integrated cover plate 102 can be provided with busbars, FPC (Flexible Printed Circuit Board) and other structures, the side plate 103 is provided with weight reduction holes 104, lifting holes 105 and mounting holes 106, and the two ends and the bottom of the side plate 103 are further provided with flange walls 107, which are used to increase the rigidity of the side plate 103. The weight reduction holes 104 are used to reduce the weight of the side plate 103, and the mounting holes 106 are used to mount bolts so that the side plate 103 can be connected with the battery cell assembly 2. As shown in FIG. 1 and FIG. 4, the lifting hole 105 and the mounting hole 106 are located between two adjacent weight reduction holes 104, and the lifting hole 105 is located on the upper side of the mounting hole 106. The two sides of the integrated cover plate 102 are open, and the two ends of the integrated cover plate 102 are bent to form a bending part, which can be connected with the battery cell assembly 2 on both sides through bolts.

[0037] In one embodiment, two of the plurality of battery cell assemblies 2 are first battery cell assemblies, and the remaining plurality of battery cell assemblies are second battery cell assemblies, the plurality of second battery cell assemblies are arranged between the two first battery cell assemblies, and the first battery cell assembly comprises an outer support 201, a first rib 202 and a first insert 203. A plurality of first mounting grooves 204 are arranged on one side of the outer support 201 along the length direction of the outer support 201, and the two ends of the first mounting groove 204 are provided with the first rib 202. The two ends of the outer support 201 are provided with the first insert 203, and the outer support 201 is connected with the outer shell 1 through the first insert 203. A plurality of first connecting holes 205 are arranged on the other side of the outer support 201, and bolts can be mounted through the first connecting holes 205. The bolts can be used to connect the adjacent two battery cell modules, or the bolts can be arranged in the first connecting holes 205 to connect and fix the beams of the battery cell module battery box. This not only reduces the manufacturing and assembly process difficulty of parts and improves the quality of the product, but also expands the battery capacity scheme of the module, improves the manufacturing efficiency and cost control, and the first connecting hole 205 can be a bolt hole. The first mounting groove 204 is semi-circular, and the two sides of the two ends of the first mounting groove 204 are provided with the first rib 202 for positioning the battery cell 211 to prevent the battery cell 211 from being separated from the first mounting groove 204. The two ends of the outer support 201 are connected with the two side plates 103 in the outer shell 1 through the first insert 203, and the first insert 203 can be a bolt or a connecting rod with external threads.

[0038] In one embodiment, the second cell assembly 2 comprises a first inner support 206, a second inner support 207 and a second rib 208, the first inner support 206, the second inner support 207 and the outer support 201 are connected by structural glue, the two sides of the first inner support 206 and the two sides of the second inner support 207 are provided with a plurality of second installation grooves 209, the two ends of each second installation groove 209 are respectively provided with a second rib 208, and the first installation groove 204 and the second installation groove 209 and the two second installation grooves 209 opposite to each other form an installation cavity. Among them, the first inner support 206 and the second inner support 207 are connected by glue, the first inner support 206 and the outer support 201 and the second inner support 207 and the outer support 201 are connected by glue, the two sides of the two ends of the second installation groove 209 are provided with a second rib 208, which is used for positioning the cell 211. The second installation groove 209 on the first inner support 206 and the second inner support 207 on the two sides is opposite to the first installation groove 204 on the outer support 201 to form an installation cavity, and the two second installation grooves 209 opposite to each other on the first inner support 206 and the second inner support 207 form an installation cavity, the installation cavity is provided for installing the cell 211, the cell 211 is provided in a cylindrical shape, and the cell 211 is connected with the inner wall of the first installation groove 204 and the second installation groove 209 by glue.

[0039] It should be noted that the plurality of second installation grooves 209 provided on the two sides of the first inner support 206 are arranged along the length direction of the first inner support 206, and the plurality of second installation grooves 209 provided on the two sides of the second inner support 207 are arranged along the length direction of the second inner support 207.

[0040] In one embodiment, the new cylindrical cell module further comprises a second insert 210, the two ends of the first inner support 206 or the second inner support 207 are provided with the second insert 210, and the second insert 210 is connected with the outer shell 1. The second insert 210 can be a bolt or a connecting rod with external threads. In this embodiment, the second insert 210 is provided at the two ends of the second inner support 207, which is used for connecting the second inner support 207 with the two side plates 103 of the outer shell 1, and the first inner support 206 and the second inner support 207 are connected by glue.

[0041] In one embodiment, the liquid cooling mechanism 3 comprises a liquid cooling belt 301, an inlet pipe 302 and an outlet pipe 303, the liquid cooling belt 301 is installed in the battery cell assembly 2, the inlet pipe 302 and the outlet pipe 303 are both installed on the side plate 103, the inlet pipe 302 is connected with the water inlet of the liquid cooling belt 301, and the outlet pipe 303 is connected with the water outlet of the liquid cooling belt 301. As shown in FIGS. 2-5, the liquid cooling belt 301 is provided with a water inlet and a water outlet, which are preferably arranged at one end of the liquid cooling belt 301. In other embodiments, as shown in FIG. 9, the water inlet and the water outlet are arranged at both ends of the liquid cooling belt, respectively, and both the water inlet and the water outlet extend out of the battery cell module and communicate with the corresponding inlet pipe 302 and outlet pipe 303. Among them, one end of the liquid cooling belt passes through the weight-reducing hole on the side plate and extends out of the battery cell module, which is used to connect with the corresponding inlet pipe 302 and outlet pipe 303, the inlet pipe 302 and the outlet pipe 303 are both provided with a plurality of adjacent inlet pipes 302 are connected with each other, adjacent outlet pipes 303 are connected with each other, each inlet pipe 302 is in communication with the water inlet of one liquid cooling belt, and each outlet pipe 303 is in communication with the water outlet of one liquid cooling belt. The weight-reducing hole in this embodiment not only has the effect of reducing weight, but also has the effect of avoiding, which is convenient for the water inlet and the water outlet at the end of the liquid cooling belt to extend out.

[0042] When a plurality of battery cell modules are assembled with each other, the inlet pipes 302 on the adjacent two battery cell modules can be in communication with each other, and the outlet pipes 303 on the adjacent two battery cell modules can be in communication with each other.

[0043] In one embodiment, the first inner support 206 and / or the second inner support 207 is provided with a first pressure relief hole 212. Among them, the first pressure relief hole 212 is preferably arranged on the second inner support 207, of course, the first pressure relief hole 212 can also be arranged on the first inner support 206, as shown in FIGS. 1-8, the second pressure relief hole 213 can also be arranged on the outer support 201. Through the arrangement of the first pressure relief hole 212 and the second pressure relief hole 213, the pressure is released when the battery cell 211 explodes, which improves the safety in use. The shape of the first pressure relief hole 212 and the second pressure relief hole 213 can be set as needed.

[0044] In this embodiment, the integrated cover plate 102 and the side plate 103 can be made of metal material, such as aluminum alloy material or other metal material.

[0045] The structure of the liquid cooling belt 301 in this embodiment can be seen from FIG. 5, which is provided with an arc-shaped groove on both side surfaces for adapting to the outer wall of the battery cell 211, and the liquid cooling belt 301 directly contacts with the battery cell 211 for heat dissipation.

[0046] In use, the plurality of battery cell assemblies 2 can be first connected and fixed by structural glue, and then the integrated cover plate 102 and the side plate 103 are installed, and after installation is completed, the water inlet pipe 302 and the water outlet pipe 303 are installed. During use, cold water or other cooling liquid can be pumped into the liquid cooling belt 301 through the water inlet pipe 302, so as to cool the battery cell 211, and the cooling liquid can be continuously pumped to realize continuous cooling.

[0047] The application also provides a battery cell module stacking method, comprising: S1: placing an outer support; S2: inserting a battery cell into each of the plurality of first installation slots of the outer support from top to bottom, and bonding the bottom of the battery cell to the inner wall of the corresponding first installation slot to form a first stacking structure, wherein the bottom of the battery cell is glued before being inserted into the first installation slot; S3: gluing the top of the plurality of battery cells of the first stacking structure; S4: stacking a first inner support above the first stacking structure, and corresponding the plurality of second installation slots at the bottom of the first inner support are inserted into the plurality of battery cells in the first stacking structure from top to bottom one by one, and the top of the battery cell is bonded to the inner wall of the corresponding second installation slot; S5: inserting a battery cell into each of the plurality of second installation slots at the top of the first inner support from top to bottom, and bonding the bottom of the battery cell to the inner wall of the corresponding second installation slot to form a second stacking structure, wherein the bottom of the battery cell is glued before being inserted into the second installation slot; S6: gluing the top of the plurality of battery cells of the second stacking structure; S7: stacking a second inner support above the second stacking structure, and corresponding the plurality of second installation slots at the bottom of the second inner support are inserted into the plurality of battery cells in the second stacking structure from top to bottom one by one, and the top of the battery cell is bonded to the inner wall of the corresponding second installation slot; S8: inserting a battery cell into each of the plurality of second installation slots at the top of the second inner support from top to bottom, and bonding the battery cell to the inner wall of the corresponding second installation slot to form a third stacking structure, wherein the bottom of the battery cell is glued before being inserted into the second installation slot; S9: gluing the top of the plurality of battery cells of the third stacking structure; and S10: repeating the above steps S4 to S8 for a predetermined number of times.

[0048] In the embodiment, first, an outer support 201 is placed on the installation table, and a plurality of first installation slots 204 on the outer support 201 are upward, then a plurality of battery cells same as the number of the first installation slots 204 are taken, the bottom of each battery cell is glued, then each battery cell is clamped into a first installation slot 204 from top to bottom, and the bottom of the battery cell is bonded to the inner wall of the first installation slot 204, the top of the battery cell is glued, then a first inner support 206 is stacked on the first stacked structure, the bottom and the top of the first inner support 206 are provided with a plurality of second installation slots 209 same as the number of the first installation slots 204, after the first inner support 206 is placed on the first stacked structure, the top of the battery cell clamped into the first installation slot 204 is clamped into the corresponding second installation slot 209, and the top of the battery cell is bonded to the inner wall of the corresponding second installation slot 209; then a plurality of battery cells same as the number of the second installation slots 209 are taken, the bottom of each battery cell is glued, then the battery cells are sequentially clamped into the corresponding second installation slots 209 from top to bottom, and the bottom of each battery cell is bonded to the inner wall of the corresponding second installation slot, to form a second stacked structure; S6: the top of each battery cell in the second stacked structure is glued; then a second inner support is stacked above the second stacked structure, the plurality of second installation slots at the bottom of the second inner support are sequentially clamped on the plurality of battery cells in the second stacked structure from top to bottom, and the top of each battery cell is bonded to the inner wall of the corresponding second installation slot; then a plurality of battery cells same as the number of the second installation slots 209 are taken, the bottom of each battery cell is glued, then the battery cells are sequentially clamped into the corresponding second installation slots 209 from top to bottom, and the battery cells are bonded to the inner wall of the corresponding second installation slot, to form a third stacked structure; the top of each battery cell in the third stacked structure is glued; the above steps S4 to S8 repeated a predetermined number of times means that the subsequent stacking steps are the same as S4 to S8, and the repetition is according to actual needs.

[0049] It should be noted that the above gluing of the battery cell is structural glue.

[0050] As can be seen from the above, the battery cell module stacking method of the present application can form the above-mentioned new type of cylindrical battery cell module, the new type of cylindrical battery cell module includes a plurality of stacked battery cell assemblies, and the battery cell assemblies are connected by structural glue, which can improve the strength of the battery cell module, and also avoids the technical defects of foaming glue process such as glue leakage, glue overflow, and low foaming quality rate.

[0051] The above only describes some embodiments of the present application, and does not limit the implementation and protection scope of the present application. It should be realized by those skilled in the art that any equivalent replacement and obvious change made according to the contents of the present application should be included in the protection scope of the present application.

Claims

1. A novel cylindrical cell module characterized by, The shell body is internally provided with a plurality of the electric core assemblies, two adjacent electric core assemblies are connected by structural glue, and each of the electric core assemblies or between two adjacent electric core assemblies is provided with a liquid cooling mechanism.

2. The novel cylindrical cell module of claim 1, wherein, The shell body comprises an integrated cover plate and a side plate, and the integrated cover plate is provided with a side plate on both sides, and a cavity for installing the electric core assembly is formed between the integrated cover plate and the side plate.

3. The novel cylindrical cell module of claim 2, wherein, The side plate is provided with a weight-reducing hole, a lifting hole and a mounting hole, and the side plate is further provided with a flange wall at both ends and the bottom.

4. The novel cylindrical cell module according to any one of claims 1 to 3, wherein, Two of the plurality of electric core assemblies are first electric core assemblies, and the rest of the plurality of electric core assemblies are second electric core assemblies, the plurality of second electric core assemblies are arranged between the two first electric core assemblies, the first electric core assembly comprises an outer support, a first rib and a first insert, one side of the outer support is provided with a plurality of first mounting grooves arranged in sequence along the length direction of the outer support, both ends of the first mounting groove are provided with the first rib, both ends of the outer support are provided with the first insert, and the outer support is connected with the shell body through the first insert.

5. The novel cylindrical cell module of claim 4, wherein, The novel cylindrical electric core module further comprises a first connecting hole, and the other side of the outer support is provided with a plurality of first connecting holes.

6. The novel cylindrical cell module of claim 4, wherein, The second electric core assembly comprises a first inner support, a second inner support and a second rib, the first inner support, the second inner support and the outer support are connected by structural glue, a plurality of second mounting grooves are formed on both sides of the first inner support and both sides of the second inner support, and both ends of each second mounting groove are provided with the second rib, and installation cavities are formed between the first mounting groove and the second mounting groove and between two opposite second mounting grooves.

7. The novel cylindrical cell module of claim 6, wherein, The novel cylindrical electric core module further comprises an electric core, and the electric core is arranged in each installation cavity.

8. The novel cylindrical cell module of claim 6, wherein, The novel cylindrical electric core module further comprises a second insert, and both ends of the first inner support or the second inner support are provided with the second insert, and the first inner support or the second inner support is connected with the shell body through the second insert.

9. The novel cylindrical cell module of claim 2, wherein, The liquid cooling mechanism comprises a liquid cooling belt, a water inlet pipe and a water outlet pipe, the liquid cooling belt is installed in the electric core assembly, the water inlet pipe and the water outlet pipe are installed on the side plate, the water inlet pipe is connected with the water inlet of the liquid cooling belt, and the water outlet pipe is connected with the water outlet of the liquid cooling belt.

10. The novel cylindrical cell module of claim 6, wherein, A first pressure relief hole is formed on the first inner support and / or the second inner support.

11. The novel cylindrical cell module of claim 2 or 3, wherein, The integrated cover plate and the side plate are made of metal material.

12. The novel cylindrical cell module of claim 6, wherein, The outer support, the first inner support and the second inner support are made of plastic.

13. A cell module stacking method for forming the novel cylindrical cell module of any one of claims 1 to 12, characterized by, It comprises: S1: placing an outer support; S2: inserting an electric core into each of the plurality of first mounting grooves of the outer support from top to bottom, and bonding the bottom of the electric core with the inner wall of the corresponding first mounting groove to form a first stacking structure, wherein the bottom of the electric core is coated with glue before being inserted into the first mounting groove; S3: Glue the top of the plurality of the battery cells of the first stack structure; S4: Stack a first inner support above the first stack structure, so that the plurality of second mounting slots at the bottom of the first inner support are correspondingly and sequentially clamped on the plurality of the battery cells in the first stack structure from top to bottom, and the top of the battery cells is bonded to the inner wall of the corresponding second mounting slot; S5: Insert a battery cell into each of the plurality of the second mounting slots at the top of the first inner support from top to bottom, and bond the bottom of the battery cell to the inner wall of the corresponding second mounting slot, to form a second stack structure, wherein the bottom of the battery cell is glued before being inserted into the second mounting slot; S6: Glue the top of the plurality of the battery cells of the second stack structure; S7: Stack a second inner support above the second stack structure, so that the plurality of second mounting slots at the bottom of the second inner support are correspondingly and sequentially clamped on the plurality of the battery cells in the second stack structure from top to bottom, and the top of the battery cells is bonded to the inner wall of the corresponding second mounting slot; S8: Insert a battery cell into each of the plurality of the second mounting slots at the top of the second inner support from top to bottom, and bond the battery cell to the inner wall of the corresponding second mounting slot, to form a third stack structure, wherein the bottom of the battery cell is glued before being inserted into the second mounting slot; S9: Glue the top of the plurality of the battery cells of the third stack structure; S10: Repeat the above steps S4 to S8 for a predetermined number of times.

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