Aluminum extruded modular high-strength compact quick-release lithium battery and grouping method thereof

Abstract

The present invention discloses an aluminum extruded modular high-strength compact quick-release lithium battery and a grouping method thereof. The lithium battery comprises a bottom plate, an outer cylinder, a potting glue, a battery, an insulating plate, a BMS module, an upper cover module, a wiring harness, a sealing ring and a copper busbar. The grouping method comprises the following steps: prefabricating a BMS module, prefabricating an upper cover module, assembling a bottom plate, applying a potting glue, assembling a battery, installing an insulating plate, installing a copper busbar, installing a BMS module, installing a wiring harness, and sealing a box. The present invention has the advantages of compact structure, simple and practical, few parts, strong modularization and standardization, mass production, low cost, high structural strength, strong resistance to expansion and deformation, high dynamic reliability, good heat dissipation performance, long battery life, simple assembly process, quick disassembly, convenient recycling and maintenance, beautiful appearance, small space occupation, and easy movement.

Description

Technical Field

[0001] The present invention relates to the technical field of lithium batteries, and in particular to an aluminum extruded modular high-strength compact quick-release lithium battery and a grouping method thereof. Background Art

[0002] Lithium battery is a type of battery that uses lithium metal or lithium alloy as the negative electrode material and a non-aqueous electrolyte solution. Due to the very active chemical properties of lithium metal, the processing, storage, and use of lithium metal have very high environmental requirements. Therefore, lithium batteries have not been used for a long time. With the development of microelectronics technology at the end of the 20th century, the number of miniaturized devices has increased, which has put forward high requirements on power sources. Lithium batteries have entered the large-scale practical stage.

[0003] At present, the main design route of lithium battery products on the market is customization, which makes product design difficult, the structure complex, and cannot be mass-produced. The cost is high. In addition, most existing lithium battery products use sheet metal shells, and the internal battery cells are usually suspended in the form of brackets. The heat of the battery cells is not easy to diffuse outward, resulting in inconsistent battery cell temperatures, which reduces the consistency of battery cell life and thus affects the service life of the battery cells.

[0004] The existing battery grouping method generally adopts bundling or side panel welding technology. This process has many parts, many operating procedures, complex procedures, low space utilization, high cost, and poor maintainability. The overall strength of the module in the bundling process is weak, and the ability of the bundling belt to resist the expansion and deformation of the battery cell is weak. The dynamic safety reliability of resisting battery vibration, mechanical shock, etc. is poor.

[0005] Therefore, in order to solve the above problems, an aluminum extruded modular high-strength compact quick-release lithium battery and a grouping method thereof are provided. Summary of the invention

[0006] In view of the shortcomings of the prior art, the present invention provides an aluminum extruded modular high-strength compact quick-release lithium battery and a grouping method thereof, so as to solve the problems of the existing lithium batteries having complex structure, inability to achieve mass production, high cost, poor reliability, short service life of the battery cells, and complex processes.

[0007] To achieve the purpose of the invention, the present invention adopts the following technical solutions:

[0008] An aluminum extruded modular high-strength compact quick-release lithium battery, comprising a bottom plate, an outer cylinder, a potting compound, a battery, an insulating plate, a BMS module, an upper cover module, a wiring harness, a sealing ring and a copper busbar, wherein the upper portion of the bottom plate is connected to the lower portion of the outer cylinder, the potting compound covers the bottom plate, the battery comprises a plurality of battery cells, the battery is located in the outer cylinder and plugged onto the potting compound, insulating plates are provided between the battery cells and between the battery cells and the outer cylinder, the copper busbar is fixedly mounted on the battery, the BMS module is provided above the battery and fixedly connected to the outer cylinder, the upper cover module is connected to the outer cylinder via a sealing ring, and the battery, the BMS module and the upper cover module are connected via a wiring harness.

[0009] Preferably, the upper cover module includes an upper cover, a connector and a handle, the connector and the handle are mounted on the upper cover, the upper and lower sides of the upper cover are folded down and bent inward, the angle between the inward bend and the lower bend of the upper cover is ≤90°, the upper cover is folded down vertically, a toothed limiting block is provided at one folded end of the upper cover, a mounting hole is provided on the upper cover for mounting the connector, and the upper cover can be in the form of a sheet metal part or an injection molded part.

[0010] Preferably, the lower folds and inner bends of the upper cover plate are arranged in segments, corresponding to the limiting boss structure of the outer cylinder, and the toothed limiting block cooperates with the reinforcing boss of the outer cylinder to play a lateral limiting role.

[0011] Preferably, the outer cylinder is provided with a plurality of reinforcing bosses arranged in an alternating manner on both sides thereof, the reinforcing bosses serve to enhance the strength of the outer cylinder and resist expansion and deformation of the battery cells, the bottom and top of the outer cylinder are provided with slide grooves, the ends of the slide grooves are provided with limiting bosses, the limiting bosses are used to limit the lateral movement of the bottom plate and the upper cover plate, the outer cylinder is provided with a plurality of threaded holes for installing the BMS module and the bottom plate, which serve to limit the lateral positioning, and the outer cylinder can be formed by an extrusion molding process.

[0012] Preferably, the reinforcing bosses on the front and back sides of the outer cylinder can be plugged in and out to facilitate the placement and transportation of the lithium battery, which not only saves space but also is more stable.

[0013] Preferably, the upper and lower sides of the bottom plate are folded upward and inward, the upper fold of the bottom plate is a vertical fold, the angle between the inward bend and the upper fold of the bottom plate is ≤90°, the right end of the fold of the bottom plate is provided with a notch, and the left end of the fold of the bottom plate is provided with a countersunk screw hole. The bottom plate can be manufactured by extrusion molding or bending molding process, and the notch can cooperate with the limiting boss of the bottom slide groove of the outer cylinder for lateral limitation of the bottom plate.

[0014] Preferably, the BMS module includes an insulating pressing block, a BMS module mounting plate and a BMS integrated circuit board, the insulating pressing block is installed at the bottom of the BMS module mounting plate, the BMS integrated circuit board is installed on the top of the BMS module mounting plate, and the insulating pressing block is used to press the upper surface of the battery cell to limit the vertical direction of the battery cell.

[0015] Preferably, the bottom plate and the outer cylinder are both made of metal aluminum, which greatly increases the heat dissipation performance of the entire lithium battery, and the potting glue is made of an organic silicone thermal conductive glue material that has only adsorption force but no bonding force.

[0016] A method for grouping aluminum extruded modular high-strength compact quick-release lithium batteries, comprising the following steps:

[0017] Step 1: Prefabricate BMS modules

[0018] Install the insulating block on the back of the BMS module mounting plate, and install the BMS integrated circuit board on the corresponding hole position of the BMS module mounting plate;

[0019] Step 2: Prefabricate the upper cover module

[0020] Prefabricate the connectors, handles, sealing rings and other components on the upper cover to form an upper cover module;

[0021] Step 3: Assemble the base plate

[0022] The outer cylinder is placed upside down with the bottom facing upwards, and the bottom plate is assembled with the outer cylinder through the sliding groove at the bottom of the outer cylinder. After the bottom plate slides into place, the bottom plate and the outer cylinder are fixed with screws;

[0023] Step 4: Apply potting glue

[0024] Place the assembled outer cylinder and bottom plate facing upwards, and pour liquid potting glue into the bottom plate inside the outer cylinder;

[0025] Step 5: Assemble the battery

[0026] Keep the assembled outer cylinder and bottom plate facing upward after being filled with liquid potting glue, place the cells one by one in the outer cylinder, and use tools such as pressing plates to press each cell hard to ensure that the cell poles are on the same level;

[0027] Step 6: Install insulation board

[0028] Install insulating plates between the battery cells and between the battery cells and the outer tube. According to the size of the gap, control the thickness of the insulating plates to ensure that the insulating plates are clamped in the gap.

[0029] Step 7: Install the copper busbar

[0030] According to the design requirements, fix the copper busbar on the battery cell;

[0031] Step 8: Install the BMS module

[0032] After the copper busbar is installed, install the BMS module into the outer tube, make sure the insulating block is pressed tightly against the upper surface of the cell, and fix it to the outer tube with screws;

[0033] Step 9: Install the wiring harness

[0034] According to the design requirements, install the wiring harness at the corresponding positions of the battery cell, BMS integrated circuit board and upper cover module;

[0035] Step 10: Sealing the box

[0036] Put on the upper cover module, slide it into the slide groove at the top of the outer tube and the segmented inner bend of the upper cover, and fasten it. At this time, the toothed limit block is locked with the outer tube reinforcement boss, and the group assembly is completed.

[0037] According to the design requirements, installing battery cells, installing copper busbars and installing wiring harnesses are all existing technologies and will not be described in detail here.

[0038] The beneficial effects of the present invention are:

[0039] 1. The present invention has the advantages of compact structure, simple and practical, few parts, strong modularization and standardization, mass production and low cost;

[0040] 2. The present invention has the advantages of high structural strength, strong resistance to expansion and deformation, and high dynamic reliability;

[0041] 3. The present invention has the advantages of good heat dissipation performance, high consistency of battery internal temperature, good consistency of battery life, and long battery service life;

[0042] 4. The present invention has the advantages of simple assembly process, quick disassembly, and convenient recycling and maintenance;

[0043] 5. The present invention has the advantages of beautiful appearance, small space occupation and convenient movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 is a stereogram of the present invention;

[0045] Figure 2 is an exploded view of the present invention;

[0046] Figure 3 It is a structural schematic diagram of the bottom plate of the present invention;

[0047] Figure 4 It is a front view structural schematic diagram of the outer cylinder of the present invention;

[0048] Figure 5 It is a rear view structural schematic diagram of the outer cylinder of the present invention;

[0049] Figure 6It is a schematic diagram of the plug-in structure of two outer cylinders of the present invention;

[0050] Figure 7 It is a structural schematic diagram of the BMS module of the present invention;

[0051] Figure 8 is an exploded view of the BMS module of the present invention;

[0052] Fig. 9 It is a structural schematic diagram of the upper cover module of the present invention;

[0053] Fig.10 It is a structural schematic diagram of the upper cover plate of the present invention;

[0054] Fig.11 The present invention Fig.10 A schematic diagram of the structure enlarged at B in the middle;

[0055] In the above figures: 1. bottom plate; 2. outer tube; 3. potting glue; 4. battery; 5. insulation plate; 6. BMS module; 7. upper cover module; 8. wiring harness; 9. sealing ring; 10. copper busbar; 11. upper cover; 12. connector; 13. handle; 14. toothed limit block; 15. mounting hole; 16. limit boss; 17. reinforcement boss; 18. slide groove; 19. notch; 20. insulation pressure block; 21. BMS module mounting plate; 22. BMS integrated circuit board. DETAILED DESCRIPTION

[0056] The present invention will be further described below through specific implementation modes in conjunction with the accompanying drawings.

[0057] Example 1

[0058] like Figure 1-11 As shown, an aluminum extruded modular high-strength compact quick-release lithium battery includes a bottom plate 1, an outer tube 2, a potting compound 3, a battery 4, an insulating plate 5, a BMS module 6, an upper cover module 7, a wiring harness 8, a sealing ring 9 and a copper bus 10. The upper part of the bottom plate 1 is connected to the lower part of the outer tube 2, the potting compound 3 covers the bottom plate 1, the battery 4 includes a plurality of battery cells, the battery 4 is located in the outer tube 2 and plugged into the potting compound 3, an insulating plate 5 is provided between the battery cells and between the battery cells and the outer tube 2, the copper bus 10 is fixedly mounted on the battery 4, the BMS module 6 is provided above the battery 4 and fixedly connected to the outer tube 2, the upper cover module 7 is connected to the outer tube 2 through a sealing ring 9, and the battery 4, the BMS module 6, and the upper cover module 7 are connected through a wiring harness 8.

[0059] Furthermore, the upper cover module 7 includes an upper cover 11, a connector 12 and a handle 13, the connector 12 and the handle 13 are installed on the upper cover 11, the upper and lower sides of the upper cover 11 are folded down and bent inward, the angle between the inner bend and the lower folded part of the upper cover 11 is ≤90°, the upper cover 11 is folded down vertically, a toothed limiting block 14 is provided at one folded end of the upper cover 11, and a mounting hole 15 is provided on the upper cover 11 for installing the connector 12. The upper cover 11 can be made of sheet metal or injection molded parts. The upper cover module 7 will be provided with more components according to the specific needs of the product, such as connectors are divided into power connectors and communication connectors, etc. Such design changes are all within the protection scope of the present invention.

[0060] Furthermore, the lower fold and inner bend of the upper cover plate 11 are arranged in segments, corresponding to the limit boss 16 structure of the outer cylinder 2, to produce a pair of mechanisms for limiting the vertical displacement of the upper cover plate 11 and the outer cylinder 2. The upper cover plate 11 can shorten the sliding distance of the upper cover plate 11 to the same width as the limit boss 16 on the outer cylinder 2 through the lower fold and inner bend structure arranged in segments, which greatly shortens the assembly distance of the upper cover plate 11, greatly shortens the length of the related wiring harness 8, and greatly reduces the difficulty of assembling the upper cover plate 11. The toothed limiting block 14 cooperates with the reinforcing boss 17 of the outer cylinder 2 to play a lateral limiting role.

[0061] Furthermore, the outer cylinder 2 is provided with a plurality of staggered reinforcing bosses 17 on both sides, which play a role in enhancing the strength of the outer cylinder 2 and resisting the expansion and deformation of the battery cell. The bottom and top of the outer cylinder 2 are provided with slide grooves 18, and the ends of the slide grooves 18 are provided with limiting bosses 16. The limiting bosses 16 are used to limit the lateral movement of the bottom plate 1 and the upper cover plate 11. The outer cylinder 2 is provided with a plurality of threaded holes for installing the BMS module 6 and the bottom plate 1, which play a role in lateral limiting. The outer cylinder 2 can be formed by an extrusion molding process, and the reinforcing bosses 17 on both sides of the outer cylinder 2 can cooperate with each other for inserting, which is convenient for placing and transporting lithium batteries, not only saving space but also more stable. Different reinforcing boss 17 structures, as long as the insertion principle is used, all belong to the protection scope of this patent.

[0062] Furthermore, the upper and lower sides of the bottom plate 1 are folded upward and inwardly, the upper fold of the bottom plate 1 is a vertical fold, the angle between the inward bend and the upper fold of the bottom plate 1 is ≤90°, the right end of the upper fold of the bottom plate 1 is provided with a notch 19, and the left end of the upper fold of the bottom plate is provided with a countersunk screw hole. The bottom plate 1 can be manufactured by extrusion molding or bending molding process, and the notch 19 can cooperate with the limiting boss 16 of the bottom slide groove of the outer cylinder 2 for lateral limitation of the bottom plate 1.

[0063] Furthermore, the BMS module 6 includes an insulating block 20, a BMS module mounting plate 21 and a BMS integrated circuit board 22. The insulating block 20 is installed at the bottom of the BMS module mounting plate 21, and the BMS integrated circuit board 22 is installed on the top of the BMS module mounting plate 21. The insulating block 20 is used to press the upper surface of the battery cell and limit the vertical direction of the battery cell.

[0064] Furthermore, the bottom plate 1 and the outer cylinder 2 are both made of metal aluminum, which greatly increases the heat dissipation performance of the entire lithium battery. The potting glue 3 is made of an organic silicone thermal conductive glue material that only has adsorption force but no bonding force. The lateral constraint between the lower half of the battery cell and the battery shell is achieved through the potting glue 3. Before installation, the liquid potting glue 3 is injected into the bottom of the lithium battery shell, and then the battery cell is loaded into the shell, pressed and leveled. After the potting glue 3 is cured, it plays a lateral limiting and restraining role on the lower half of the battery cell. Different potting glue materials and filling forms all fall within the scope of protection of this patent.

[0065] Furthermore, the bottom plate 1, the outer cylinder 2 and the upper cover plate 11 constitute a lithium battery shell, and the lateral constraint between the top of the battery cell and the lithium battery shell is achieved by inserting an insulating plate 5. According to the different gaps between the top of the battery cell and the battery shell, insulating plates 5 of different thicknesses and materials are inserted to play a role of lateral limiting and fixing. Different insulating plate 5 materials and structural forms all fall within the scope of protection of this patent; the vertical constraint of the battery cell is achieved through two aspects, first, adsorption force and friction force: that is, the adsorption force generated by the cured potting glue 3 on the lower half of the battery cell, and the friction force between the insulating plate 5 and the upper half of the battery cell and the outer cylinder 2; the second is the vertical constraint limit force of the insulating block 20 on the BMS module 6 on the battery cell. Any vertical constraint form using one or more of the present invention is within the scope of protection of this patent.

[0066] A method for grouping aluminum extruded modular high-strength compact quick-release lithium batteries, comprising the following steps:

[0067] Step 1: Prefabricate BMS modules

[0068] Install the insulating block on the back of the BMS module mounting plate, and install the BMS integrated circuit board on the corresponding hole position of the BMS module mounting plate;

[0069] Step 2: Prefabricate the upper cover module

[0070] Prefabricate the connectors, handles, sealing rings and other components on the upper cover to form an upper cover module;

[0071] Step 3: Assemble the base plate

[0072] The outer cylinder is placed upside down with the bottom facing upwards, and the bottom plate is assembled with the outer cylinder through the sliding groove at the bottom of the outer cylinder. After the bottom plate slides into place, the bottom plate and the outer cylinder are fixed with screws;

[0073] Step 4: Apply potting glue

[0074] Place the assembled outer cylinder and bottom plate facing upwards, and pour liquid potting glue into the bottom plate inside the outer cylinder;

[0075] Step 5: Assemble the battery

[0076] Keep the assembled outer cylinder and bottom plate facing upward after being filled with liquid potting glue, place the cells one by one in the outer cylinder, and use tools such as pressing plates to press each cell hard to ensure that the cell poles are on the same level;

[0077] Step 6: Install insulation board

[0078] Install insulating plates between the battery cells and between the battery cells and the outer tube. According to the size of the gap, control the thickness of the insulating plates to ensure that the insulating plates are clamped in the gap.

[0079] Step 7: Install the copper busbar

[0080] According to the design requirements, fix the copper busbar on the battery cell;

[0081] Step 8: Install the BMS module

[0082] After the copper busbar is installed, install the BMS module into the outer tube, make sure the insulating block is pressed tightly against the upper surface of the cell, and fix it to the outer tube with screws;

[0083] Step 9: Install the wiring harness

[0084] According to the design requirements, install the wiring harness at the corresponding positions of the battery cell, BMS integrated circuit board and upper cover module;

[0085] Step 10: Sealing the box

[0086] Put on the upper cover module, slide it into the slide groove at the top of the outer tube and the segmented inner bend of the upper cover, and fasten it. At this time, the toothed limit block is locked with the outer tube reinforcement boss, and the group assembly is completed.

[0087] According to the design requirements, installing battery cells, installing copper busbars and installing wiring harnesses are all existing technologies and will not be described in detail here.

[0088] Example 2

[0089] This example uses 8 3.2V100Ah lithium batteries, 1 in parallel and 8 in series.

[0090] A method for grouping aluminum extruded modular high-strength compact quick-release lithium batteries, comprising the following steps:

[0091] Step 1: Prefabricate BMS modules

[0092] Install the insulating block on the back of the BMS module mounting plate, and install the BMS integrated circuit board on the corresponding hole position of the BMS module mounting plate;

[0093] Step 2: Prefabricate the upper cover module

[0094] Prefabricate the connectors, handles, sealing rings and other components on the upper cover to form an upper cover module;

[0095] Step 3: Assemble the base plate

[0096] The outer cylinder is placed upside down with the bottom facing upwards, and the bottom plate is assembled with the outer cylinder through the sliding groove at the bottom of the outer cylinder. After the bottom plate slides into place, the bottom plate and the outer cylinder are fixed with screws;

[0097] Step 4: Apply potting glue

[0098] Place the assembled outer cylinder and bottom plate facing upwards, and pour liquid potting glue into the bottom plate inside the outer cylinder;

[0099] Step 5: Assemble the battery

[0100] Keep the assembled outer cylinder and bottom plate facing upward after being filled with liquid potting glue, place 8 battery cells one by one in the outer cylinder, and use tools such as pressing plates to press each battery cell hard to ensure that the battery cell poles are on the same horizontal plane;

[0101] Step 6: Install insulation board

[0102] Install insulating plates between the battery cells and between the battery cells and the outer tube. According to the size of the gap, control the thickness of the insulating plates to ensure that the insulating plates are clamped in the gap.

[0103] Step 7: Install the copper busbar

[0104] According to the design requirements, the copper busbar is fixed on the battery cell according to the 1-in-parallel 8-in-series grouping scheme;

[0105] Step 8: Install the BMS module

[0106] After the copper busbar is installed, install the BMS module into the outer tube, make sure the insulating block is pressed tightly against the upper surface of the cell, and fix it to the outer tube with screws;

[0107] Step 9: Install the wiring harness

[0108] According to the design requirements, install the wiring harness at the corresponding positions of the battery cell, BMS integrated circuit board and upper cover module;

[0109] Step 10: Sealing the box

[0110] Put on the upper cover module, slide it into the slide groove at the top of the outer tube and the segmented inner bend of the upper cover, and fasten it. At this time, the toothed limit block is locked with the outer tube reinforcement boss, and the group assembly is completed.

[0111] According to the design requirements, installing battery cells, installing copper busbars and installing wiring harnesses are all existing technologies and will not be described in detail here.

[0112] The above description is only a specific embodiment of the present invention, but the structural features of the present invention are not limited thereto. The present invention can be used on similar products. Any changes or modifications made by any technician in the field of the present invention are covered by the patent scope of the present invention.

Claims

1. An aluminum extruded modular high-strength compact quick-release lithium battery, characterized by: It includes a bottom plate, an outer tube, a potting compound, a battery, an insulating plate, a BMS module, an upper cover module, a wiring harness, a sealing ring and a copper busbar. The upper part of the bottom plate is connected to the lower part of the outer tube. The potting compound covers the bottom plate. The battery includes a plurality of cells. The battery is located in the outer tube and plugged into the potting compound. An insulating plate is provided between the cells and between the cells and the outer tube. The copper busbar is fixedly mounted on the battery. The BMS module is provided above the battery and fixedly connected to the outer tube. The upper cover module is connected to the outer tube through a sealing ring. The battery, the BMS module and the upper cover module are connected through a wiring harness. The upper cover module comprises an upper cover, a connector and a handle, wherein the connector and the handle are mounted on the upper cover, the upper and lower sides of the upper cover are folded downward and bent inward, the angle between the inward bending part and the lower folding part of the upper cover is ≤90°, the upper cover is folded downward vertically, a toothed limiting block is provided at one end of the folded upper cover, and a mounting hole is provided on the upper cover; The upper and lower sides of the bottom plate are folded upward and inward, the upper fold of the bottom plate is vertically folded upward, the angle between the inward bend and the upper fold of the bottom plate is ≤90°, a notch is provided at the right end of the fold of the bottom plate, and a countersunk screw hole is provided at the left end of the fold of the bottom plate.

2. The aluminum extruded modular high-strength compact quick-release lithium battery according to claim 1, characterized in that: The lower folds and inward bends of the upper cover plate are arranged in segments.

3. The aluminum extruded modular high-strength compact quick-release lithium battery according to claim 1, characterized in that: The front and back sides of the outer cylinder are provided with a plurality of reinforcing bosses arranged in a staggered manner, the bottom and the top of the outer cylinder are provided with sliding grooves, the ends of the sliding grooves are provided with limiting bosses, and the outer cylinder is provided with a plurality of threaded holes.

4. The aluminum extruded modular high-strength compact quick-release lithium battery according to claim 3, characterized in that: The reinforcing bosses on the front and back sides of the outer cylinder can be matched and inserted.

5. The aluminum extruded modular high-strength compact quick-release lithium battery according to claim 1, characterized in that: The BMS module includes an insulating pressing block, a BMS module mounting plate and a BMS integrated circuit board. The insulating pressing block is mounted on the bottom of the BMS module mounting plate, and the BMS integrated circuit board is mounted on the top of the BMS module mounting plate.

6. The aluminum extruded modular high-strength compact quick-release lithium battery according to claim 1, characterized in that: The bottom plate and the outer cylinder are both made of metal aluminum, and the potting glue is made of organic silicone heat-conducting glue material.

7. A method for grouping aluminum extruded modular high-strength compact quick-release lithium batteries as claimed in claim 1, characterized in that: The steps include: Step 1: Prefabricate the BMS module, install the insulating block on the back of the BMS module mounting plate, and install the BMS integrated circuit board on the corresponding hole position of the BMS module mounting plate; Step 2: prefabricate the upper cover module, prefabricate the connector, handle, and sealing ring components on the upper cover to form the upper cover module; Step 3: Assemble the bottom plate. Place the outer cylinder upside down with the bottom facing upwards. Assemble the bottom plate with the outer cylinder through the bottom slide groove of the outer cylinder. After the bottom plate slides into place, fix the bottom plate and the outer cylinder with screws. Step 4: Apply potting glue. Place the assembled outer cylinder and bottom plate facing upwards, and pour liquid potting glue onto the bottom plate inside the outer cylinder. Step 5: Assemble the battery, keep the assembled outer cylinder and bottom plate facing upward after being filled with liquid potting glue, place the cells one by one in the outer cylinder, and use the pressing plate tool to press each cell hard to ensure that the cell poles are on the same horizontal plane; Step 6: Install the insulating plate between the battery cells and between the battery cells and the outer tube. According to the size of the gap, control the thickness of the insulating plate to ensure that the insulating plate is clamped in the gap; Step 7: Install the copper busbar. Fix the copper busbar on the battery cell according to the design requirements. Step 8. Install the BMS module. After the copper busbar is installed, install the BMS module into the outer tube, make sure the insulating block is pressed tightly against the upper surface of the battery cell, and fix it to the outer tube with screws; Step 9. Install the wiring harness. According to the design requirements, install the wiring harness at the corresponding positions of the battery cell, BMS integrated circuit board and upper cover module; Step 10, seal the box, cover the upper cover module, slide it into the slide groove at the top of the outer tube and the segmented inner bend of the upper cover, and fasten it. At this time, the toothed limit block is locked with the outer tube reinforcement boss, and the group assembly is completed.

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