Battery grouping device and method

Abstract

The invention discloses a battery grouping device which comprises a fixing assembly, a tidying assembly and an auxiliary mounting assembly, each fixing assembly comprises a bottom plate and a battery cell limiting assembly and a liquid cooling plate limiting assembly which are connected to the bottom plate, a battery cell positioning groove is formed in the battery cell limiting assembly, and the liquid cooling plate fixing assemblies are located on the two sides of the battery cell limiting assembly; the arranging assembly comprises a first driving assembly, a plurality of base plates and an extrusion insulating plate, the base plates are detachably connected, the first driving assembly is connected to the bottom plate, and the movable end of the first driving assembly is sequentially connected with the base plates and the extrusion insulating plate; the auxiliary mounting assembly comprises an auxiliary mounting frame assembly, a second driving assembly and a pressure head, the auxiliary mounting frame assembly is erected above the liquid cooling plate limiting assembly, the second driving assembly is slidably connected with the auxiliary mounting frame assembly, and the movable end of the second driving assembly is connected with the pressure head. The invention also discloses a battery grouping method. The battery pack has the beneficial effects that the battery cell position is accurate, and the heat dissipation effect is better.

Description

Technical Field

[0001] The present invention relates to the technical field of batteries, and particularly to a battery grouping device. Background Art

[0002] With the extensive use of internal combustion engine vehicles, the problems of air pollution and shortage of oil resources have become increasingly serious. As an important means of energy conservation and emission reduction, new energy vehicles have received extensive attention and promotion. At present, lithium-ion batteries are generally selected as power batteries for new energy vehicles. With the increasing application of lithium batteries in life and production, the types of lithium battery cells and the grouping methods are also different.

[0003] Before being grouped, a battery pack is composed of multiple cells, and the cells include square cells and cylindrical cells.

[0004] However, when the cylindrical cells were formed before, they were paired with an integral liquid cooling plate. For example, in CN106207042A, a battery module, the battery module includes: a plurality of cylindrical cells arranged in parallel, a plurality of heat pipes inserted between the cylindrical cells, a liquid cooling plate, and a fixing bracket for accommodating and fixing the cylindrical cells and the heat pipes. The cooling ends of the plurality of heat pipes are respectively connected to the liquid cooling plate; the liquid cooling plate covers the top surface of the fixing bracket to form a closed space for accommodating the cylindrical cells and the heat pipes; wherein, a heat-conducting adhesive is filled in the space of the fixing bracket for accommodating the heat pipes, and the heat pipes are tubular structures. Due to the fixed size of the integral liquid cooling plate, the resulting products are prone to problems such as large size errors, displacement of the cell positions, poor contact with the liquid cooling plate, and poor heat exchange effect.

[0005] The information disclosed in this background art section is only intended to enhance the overall understanding of the present invention and should not be regarded as an admission or any form of implication that this information constitutes prior art known to those of ordinary skill in the art. Summary of the Invention

[0006] The technical problem to be solved by the present invention is: how to solve the problems of poor contact between the existing integral liquid cooling plate and the cells and poor heat exchange effect.

[0007] The present invention solves the above technical problems by the following technical means:

[0008] A battery grouping device includes a fixing component, a regularizing component, and an auxiliary installation component;

[0009] The fixing component includes a bottom plate, a cell limiting component and a liquid cooling plate limiting component connected to the bottom plate. The cell limiting component is provided with a cell positioning groove, and the liquid cooling plate fixing component is located on both sides of the cell limiting component;

[0010] The regularizing component includes a first driving component, a plurality of detachably connected backing plates and an extrusion insulating plate. The first driving component is connected to the bottom plate, and the movable end of the first driving component is sequentially connected to the backing plate and the extrusion insulating plate;

[0011] The auxiliary installation component includes an auxiliary installation frame component, a second driving component and a pressing head. The auxiliary installation frame component is erected above the liquid cooling plate limiting component. The second driving component is slidably connected to the auxiliary installation frame component, and the movable end of the second driving component is connected to the pressing head.

[0012] The present invention makes the process of forming a cylindrical battery cell and a single-row corrugated liquid cooling plate and its pipe joint simpler and easier to operate. The battery cell limiting component and the liquid cooling plate limiting component respectively limit the cylindrical battery cell and the liquid cooling plate, which also effectively controls the dimensional error of the assembled battery and accurately positions the battery cell. The second driving component and the pressing head can enable the pipe joint to cooperate smoothly with the liquid cooling plate, and the sealing effect of the pipe joint is better, and the operation of the staff is also more labor-saving. A set of devices simultaneously completes the positioning and extrusion between the liquid cooling plate and the cylindrical battery cell. During the extrusion process, the assembly of the single-row corrugated liquid cooling plate and its pipe joint can be realized, avoiding multiple operations in the forming process, and sequentially extruding the liquid cooling plate and the cylindrical battery, making the connection between the two reliable and the heat dissipation effect better.

[0013] Preferably, the battery cell limiting component includes an insulating plate, an end plate and an end support frame; the insulating plate is connected to the bottom plate, and a plurality of arc-shaped plates are connected to the upper surface of the insulating plate. The arc-shaped plates in each row form a wave shape, and the arc-shaped plates in adjacent rows can form a space adapted to the arrangement of the cylindrical battery cells; the end support frame is connected to the bottom plate and is located at the end of the insulating plate, and the end plate is connected to the end support frame and is connected to the top surface of the insulating plate.

[0014] The arc-shaped plates form a limiting groove for the cylindrical battery cell, which can better limit the cylindrical battery cell. At the same time, the top surface of the arc-shaped plate forms a supporting surface for the liquid cooling plate, so that the final cylindrical battery is in good contact with the liquid cooling plate, with high overall space utilization rate and large battery density.

[0015] Preferably, the liquid cooling plate limiting component includes a limiting strip and a stop baffle; the limiting strip is connected to the bottom plate, and the limiting strips on both sides of the insulating plate are arranged in parallel. A plurality of first limiting grooves are opened in parallel along the length direction of the limiting strip, and the bottom of the stop baffle is inserted into the first limiting groove.

[0016] The number of the first limiting grooves on the limiting strip is the same as the number of the liquid cooling plates, and their positions correspond to each other. After the stop baffle is inserted into the first limiting groove, it can position the liquid cooling plate in the X and Y directions, providing a positioning basis for subsequent extrusion of the pipe joint.

[0017] Preferably, the first driving assembly includes a first support frame, a first lead screw nut, a first lead screw, a lead screw connection block, a second support frame, and a first guiding assembly; the first support frame is connected to the bottom plate, the first lead screw nut is embedded in the first support frame, the first lead screw is connected to the first lead screw nut, the end of the first lead screw is rotatably connected to the lead screw connection block, the lead screw connection block is connected to the second support frame, the first guiding assembly is connected to the bottom plate, and the bottom of the second support frame is connected to the first guiding assembly.

[0018] Preferably, the first guiding assembly includes a first slider and a guide rail. The two guide rails are symmetrically arranged along the vertical plane of the first support frame. The guide rails are fixedly connected to the bottom plate. Two first sliders are arranged on each side of the guide rail. The second support frame is in a rectangular frame structure, and the two first sliders are respectively connected to both sides of one end of the second support frame.

[0019] Extrusion is achieved through the lead screw nut combination. The driving force is uniform and reliable, and self-locking can be achieved; the first guiding assembly can ensure the stability of the driving force direction and support the second support frame.

[0020] Preferably, the auxiliary installation assembly further includes a pin. The auxiliary installation frame assembly includes an installation frame body and a track installation plate. The two installation frame bodies are symmetrically connected to the bottom plate at intervals. The two ends of the track installation plate are connected to the installation frame body. A vertically penetrating pin hole is formed in the track installation plate along the length direction, and the pin is movably connected to the pin hole.

[0021] Preferably, the second driving assembly includes a linear rail assembly, a slider connection plate, a lead screw connection plate, a second lead screw, and a second lead screw nut; the linear rail assembly is connected to the bottom of the track installation plate, the top surface of the slider connection plate is connected to the linear rail assembly, the lead screw connection plate is connected to the bottom of the slider connection plate, the second lead screw nut is connected to the lead screw connection plate, the second lead screw is connected to the second lead screw nut, the end of the second lead screw is rotatably connected to a press head connection block, and the press head connection block is connected to the press head.

[0022] Preferably, the second driving assembly further includes a second guiding assembly; the second guiding assembly includes a plurality of guiding rods and a plurality of linear bearings. The plurality of linear bearings are axially embedded in the lead screw connection plate, one end of the guiding rod is fixedly connected to the press head, and the other end is slidably connected to the linear bearing.

[0023] Preferably, one side of the extrusion insulating plate close to the liquid cooling plate is wavy, and the liquid cooling plate is wavy.

[0024] The battery grouping method, using the above battery grouping device, includes the following steps: Place the first liquid cooling plate on the battery cell limiting component and position it through the liquid cooling plate limiting component. Position the first row of cylindrical battery cells in the battery cell positioning grooves. Place the second liquid cooling plate on the other side of the first row of cylindrical battery cells, and connect the pipe joints between the first liquid cooling plate and the second liquid cooling plate. The movable end of the first driving component is sequentially connected to a plurality of backing plates and an extrusion insulating plate, and the first driving component is driven to make the extrusion insulating plate extrude the first liquid cooling plate, the first row of cylindrical battery cells, and the second liquid cooling plate; After the second driving component is positioned on the auxiliary mounting frame component, the second driving component drives the pressing head to connect the first liquid cooling plate, the second liquid cooling plate and the pipe joint;

[0025] Repeat the above actions until all the cylindrical battery cells, liquid cooling plates and their pipe joints are connected into a group.

[0026] The advantages of the present invention are as follows:

[0027] The present invention makes the process of grouping cylindrical battery cells and single-row corrugated liquid cooling plates and their pipe joints simpler and easier to operate. The battery cell limiting component and the liquid cooling plate limiting component respectively limit the cylindrical battery cells and the liquid cooling plates, which also effectively controls the dimensional error of the grouped battery and accurately positions the battery cells. The second driving component and the pressing head can make the pipe joints cooperate smoothly with the liquid cooling plates, the sealing effect of the pipe joints is better, and the operation of the employees is more labor-saving.

[0028] The device of the present invention simultaneously completes the positioning and extrusion between the liquid cooling plate and the cylindrical battery cells. During the extrusion process, the assembly of the single-row corrugated liquid cooling plate and its pipe joints can be realized, avoiding multiple operations in the grouping process, and sequentially extruding the liquid cooling plate and the cylindrical battery, making their connection reliable and the heat dissipation effect better.

[0029] The arc-shaped plate of the present invention forms a limiting groove for the cylindrical battery cells, which can better limit the cylindrical battery cells. At the same time, the top surface of the arc-shaped plate forms a supporting surface for the liquid cooling plate, making the final contact between the cylindrical battery and the liquid cooling plate good, with high overall space utilization rate and large battery density.

[0030] The number of the first limiting grooves on the limiting strip of the present invention is the same as the number of the liquid cooling plates, and their positions correspond. After the stop plate is inserted into the first limiting groove, it can position the liquid cooling plate in the X and Y directions, providing a positioning basis for subsequent extrusion of the pipe joints.

[0031] The present invention realizes extrusion through the screw-nut combination, with uniform and reliable driving force and the ability to realize self-locking; The first guiding component and the second guiding component can ensure the stable direction of the driving force and the supporting effect.

[0032] In the present invention, the liquid cooling plate is wavy, which can increase the contact area with the cylindrical battery cells and improve the heat dissipation effect; the extrusion insulating plate is wavy, which can fit better with the liquid cooling plate and improve the extrusion effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic structural diagram of the battery grouping device according to an embodiment of the present invention;

[0034] Figure 2 is an exploded schematic diagram of the battery grouping device according to an embodiment of the present invention;

[0035] Figure 3 is a schematic structural diagram of the fixing component according to an embodiment of the present invention;

[0036] Figure 4 is a schematic structural diagram of the fixing component according to an embodiment of the present invention;

[0037] Figure 5 is Figure 4 schematic diagram at position A in

[0038] Figure 6 is a schematic diagram when the cylindrical battery cells and the liquid cooling plate are grouped according to an embodiment of the present invention;

[0039] Figure 7 is a schematic connection structure diagram of the regularizing component and the fixing component according to an embodiment of the present invention;

[0040] Figure 8 is a schematic connection structure diagram of the regularizing component and the fixing component according to an embodiment of the present invention;

[0041] Figure 9 is a schematic structural diagram of the auxiliary installation component according to an embodiment of the present invention;

[0042] Figure 10 is a schematic structural diagram of the auxiliary installation component according to an embodiment of the present invention;

[0043] Figure 11 is a partial enlarged schematic diagram of the auxiliary installation component according to an embodiment of the present invention;

[0044] Figure 12 is a schematic connection diagram of the liquid cooling plate and the pipe joint according to an embodiment of the present invention;

[0045] Figure 13 is a schematic structural diagram of the extrusion insulating plate according to an embodiment of the present invention;

[0046] Figure 14 is a schematic diagram of the battery grouping method according to an embodiment of the present invention;

[0047] Figure 15 is a schematic diagram of the battery grouping method according to an embodiment of the present invention;

[0048] Reference Numerals in the Figures

[0049] 1. Fixing Assembly; 11. Base Plate; 12. Insulating Plate; 121. Arc Plate; 13. End Plate; 14. Limiting Strip; 141. First Limiting Groove; 15. Stop Plate; 16. End Support Frame

[0050] 2. Regularizing Assembly; 21. First Support Frame; 22. First Lead Screw Nut; 23. First Lead Screw; 24. Lead Screw Connecting Block; 25. Second Support Frame; 26. First Guide Assembly; 261. First Slide Block; 262. Guide Rail; 27. Padding Plate; 28. Extrusion Insulating Plate

[0051] 3. Auxiliary Installation Assembly; 31. Auxiliary Installation Frame Assembly; 311. Installation Frame Body; 312. Track Installation Plate; 313. Pin Hole; 32. Linear Rail Assembly; 321. Linear Rail Body; 322. Second Slide Block; 33. Pin; 34. Slide Block Connecting Plate; 35. Lead Screw Connecting Plate; 36. Second Lead Screw; 37. Second Lead Screw Nut; 38. Pressing Head; 381. Pressing Head Connecting Block; 39. Second Guide Assembly; 391. Guide Rod; 392. Linear Bearing

[0052] 4. Cylindrical Battery Cell; 5. Liquid Cooling Plate; 6. Pipe Joint; 7. Valve Detailed Embodiment

[0053] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0054] Embodiment 1

[0055] As shown in Figure 1 , Figure 2 , Figure 6 , the battery grouping device includes a fixing assembly 1, a regularizing assembly 2, and an auxiliary installation assembly 3. Among them, the fixing assembly 1 is used to carry and position the cylindrical battery cell 4 and to limit the liquid cooling plate 5. The regularizing assembly 2 is connected to one end of the fixing assembly 1, and its end is movable, and is used to press the liquid cooling plate 5 and the cylindrical battery cell 4 so that the two are closely attached. The auxiliary installation assembly 3 is used for the connection between the liquid cooling plate 5 and the pipe joint 6. The auxiliary installation assembly 3 is connected to both sides of the fixing assembly 1, located on both sides of the cylindrical battery cell 4 grouping area, and above the limiting strip 14 of the fixing assembly 1. The liquid cooling plates 5 and the cylindrical battery cells 4 are arranged at intervals. Both ends of multiple liquid cooling plates 5 can be connected through the pipe joint 6, and an inlet and outlet are provided for the circulation of the coolant to achieve the cooling of the cylindrical battery cells 4.

[0056] Specifically, as Figure 3 , Figure 4 , Figure 5 shown, the fixing component 1 includes a bottom plate 11, a battery cell limiting component and a liquid cooling plate limiting component connected to the bottom plate 11. The battery cell limiting component includes an insulating plate 12, an end plate 13, and an end support frame 16. The liquid cooling plate limiting component includes a limiting strip 14 and a stop plate 15. The bottom plate 11 is a rectangular plate. The insulating plate 12 is connected to the bottom plate 11. A plurality of arc-shaped plates 121 are connected to the upper surface of the insulating plate 12. Each row of arc-shaped plates 121 can form a wavy shape. The adjacent rows of arc-shaped plates 121 can form a space adapted to the arrangement of the cylindrical battery cells 4. The top surface of the arc-shaped plate 121 is used to place the liquid cooling plate 5. An end support frame 16 is vertically arranged at one end of the insulating plate 12. The end support frame 16 is fixedly connected to the bottom plate 11 and abuts against the end of the insulating plate 12. An end plate 13 is connected to the corner where the end support frame 16 is connected to the insulating plate 12. The end plate 13 is in the structure of a vertically placed concave plate. The end plate 13 is connected to the end support frame 16 by bolts. There is a groove on one side of the end plate 13 adapted to the arrangement of the liquid cooling plate 5, that is, one side of the end plate 13 can be aligned with the wavy liquid cooling plate 5. Limiting strips 14 are arranged on both sides of the insulating plate 12. The limiting strips 14 are connected to the bottom plate 11 by bolts. The two side limiting strips 14 are arranged in parallel. The length of the limiting strip 14 is adapted to the insulating plate 12. There is a first limiting groove 141 horizontally penetrating through the limiting strip 14. The first limiting groove 141 is horizontally arranged. A plurality of first limiting grooves 141 are uniformly arranged along the length direction of the limiting strip 14. There is a stop plate 15 on the limiting strip 14 that can limit the liquid cooling plate 5, support the liquid cooling plate 5, and is used to install the pipe joint 6. The bottom of the stop plate 15 is inserted into the first limiting groove 141. The end of the stop plate 15 can abut against the end of the liquid cooling plate 5. The side of the stop plate 15 can abut against the end of the pipe joint 6.

[0057] The above-mentioned arc-shaped plates 121 form a limiting groove for the cylindrical battery cells 4, which can better limit the cylindrical battery cells 4. At the same time, the top surface of the arc-shaped plates 121 forms a supporting surface for the liquid cooling plate 5, so that the final cylindrical battery 4 is in good contact with the liquid cooling plate 5, with high overall space utilization rate and large battery density.

[0058] As Figure 6As shown, the cylindrical battery cells 4 are arranged in rows within the arrangement space formed by the arc-shaped plate 121. A liquid cooling plate 5 is connected between adjacent rows of cylindrical battery cells 4. The liquid cooling plate 5 is wavy and can be adapted to the cylindrical surface of the cylindrical battery cell 4. The part of the cylindrical battery cell 4 in contact with the liquid cooling plate 5 is bonded together by applying glue. The liquid cooling plate 5 at the topmost end is adapted to and tightly connected to the end plate 13. The left end of the topmost liquid cooling plate 5 is limited by a stop plate 15. The number of the first limiting grooves 141 on the limiting strip 14 is the same as the number of the liquid cooling plates 5, and their positions correspond. After the stop plate 15 is inserted into the first limiting groove 141, it can position the liquid cooling plate 5 in the X and Y directions, providing a positioning basis for subsequent extrusion of the pipe joint. From Figure 6 It can be seen that the rear end face and the left end face of the topmost liquid cooling plate 5 are both limited by the stop plate 15. Adjacent liquid cooling plates 5 are connected by a pipe joint 6. A valve 7 is provided at a certain section of the pipe joint 6 to enable the coolant to enter and exit.

[0059] As Figure 7 、 Figure 8 shown, the regularizing assembly 2 includes a first driving assembly, a plurality of detachably connected backing plates 27 and an extrusion insulating plate 28. The first driving assembly includes a first support frame 21, a first screw nut 22, a first screw 23, a screw connecting block 24, a second support frame 25, and a first guiding assembly 26. The first support frame 21 is fixedly connected to the bottom plate 11 and can be fixed by bolts. The first screw nut 22 is embedded in the first support frame 21. The first screw 23 is connected to the first screw nut 22. One end of the first screw 23 is connected to a handle, and the other end is connected to the screw connecting block 24 through a bearing. The screw connecting block 24 is fixedly connected to the second support frame 25. The bottom of the second support frame 25 is connected to the first guiding assembly 26, and the first guiding assemblies 26 on both sides are connected to the bottom plate 11. A plurality of backing plates 27 are arranged side by side on one side of the second support frame 25. The ends of the backing plates 27 are arranged with the extrusion insulating plate 28. The end of the extrusion insulating plate 28 is corrugated and can be adapted to the shape of the liquid cooling plate 5, so that the liquid cooling plate 5 is bonded to the cylindrical battery cell 4.

[0060] Extrusion is achieved through a screw nut combination. The driving force is uniform and reliable, and self-locking can be achieved.

[0061] It should be noted that: since the wave crests of adjacent liquid cooling plates 5 are not aligned, as Figure 13 shown, in order to align with the grooves of each liquid cooling plate 5, two extrusion insulating plates 28 can be prepared and used alternately to ensure that the extrusion insulating plate 28 can fit with the liquid cooling plate 5. Also considering that glue needs to be applied between the liquid cooling plate 5 and the cylindrical battery cell 4, and the gluing area cannot be in contact with the extrusion insulating plate 28, therefore, it is preferably to apply glue in the grooves of the liquid cooling plate 5 (as Figure 13As shown by the thick solid line (only four locations are marked as examples in the figure), no glue is applied to the raised parts. Correspondingly, the peak height h1 of the extruded insulating plate 28 can be slightly smaller than the peak height h of the liquid cooling plate 5.

[0062] Among them, the first guiding component 26 includes a first slider 261 and a guide rail 262. The two guide rails 262 are symmetrically arranged along the vertical plane of the first support frame 21. The guide rails 262 are fixedly connected to the bottom plate 11. Two first sliders 261 are arranged on each side of the guide rail 262. The second support frame 25 is in a rectangular frame structure. The two first sliders 261 are respectively connected to both sides of one end of the second support frame 25. The first guiding component 26 can achieve the purpose of guiding and ensure the stability of sliding.

[0063] In this embodiment, after manually rotating the handle, the first lead screw 23 rotates. Since the position of the first lead screw nut 22 is fixedly set, the first lead screw 23 can move along the horizontal axis. The first lead screw 23 is connected to the lead screw connecting block 24 through a bearing. Therefore, the first lead screw 23 can drive the second support frame 25 to move horizontally, thereby driving the backing plate 27 and the extruded insulating plate 28 to move, so as to extrude and bond the liquid cooling plate 5 and the cylindrical battery cell 4.

[0064] In this embodiment, since the stroke of the first lead screw 23 is limited, the number of backing plates 27 is not limited, and the number to be selected and used is determined according to needs.

[0065] Considering the alignment between the backing plates 27 and the alignment between the backing plates 27 and the extruded insulating plate 28 to ensure that the extruded insulating plate 28 can extrude the liquid cooling plate 5, guide posts can be provided on one side of the backing plate 27 and guide holes on the other side. After the guide posts of one backing plate 27 are inserted into the guide holes of the adjacent backing plate 27, better stability and alignment effects can be achieved.

[0066] As Figure 9 、 Figure 10 、 Figure 11 shown, the auxiliary installation component 3 straddles above the limiting strip 14. The auxiliary installation component 3 includes an auxiliary installation frame component 31, a second driving component, a plug pin 33, and a pressing head 38. The second driving component includes a linear rail component 32, a slider connecting plate 34, a lead screw connecting plate 35, a second lead screw 36, a second lead screw nut 37, and a second guiding component 39.

[0067] Among them, the auxiliary mounting frame assembly 31 includes a mounting frame body 311 and a rail mounting plate 312. There are two mounting frame bodies 311, and the two mounting frame bodies 311 are symmetrically connected to the bottom plate 11 at intervals and are located at both ends of the limiting strip 14. Both ends of the rail mounting plate 312 are connected to the mounting frame body 311 by bolts. The rail mounting plate 312 is horizontally arranged, and a vertically penetrating pin hole 313 is formed in the rail mounting plate 312 along the length direction. The pin 33 can be inserted into the slider connecting plate 34 through the pin hole 313 and connected to the limiting hole on the slider connecting plate 34, forcing the slider connecting plate 34 to be fixed.

[0068] The linear guide rail assembly 32 includes a linear guide rail body 321 and a second slider 322. The linear guide rail body 321 is fixedly connected to the bottom surface of the rail mounting plate 312, and the second slider 322 is slidably connected to the linear guide rail body 321. In this embodiment, two second sliders 322 are provided, and the slider connecting plate 34 is simultaneously connected to the two second sliders 322 by bolts. The lead screw connecting plate 35 is in a vertical state, and the top of the lead screw connecting plate 35 is connected to the slider connecting plate 34. The second lead screw nut 37 is embedded in the lead screw connecting plate 35, and the second lead screw 36 is connected to the second lead screw nut 37. The end of the second lead screw 36 is connected to a bearing, and the bearing is installed on the pressure head connecting block 381. The pressure head connecting block 381 is connected to the pressure head 38, and the pressure head 38 is arranged parallel to the lead screw connecting plate 35.

[0069] The second guiding component 39 includes a plurality of guiding rods 391 and linear bearings 392. Three linear bearings 392 are axially embedded in the lead screw connecting plate 35. One end of the guiding rod 391 is fixedly connected to the pressure head 38, and the other end is movably connected to the linear bearing 392. When the pressure head 38 moves along the horizontal axis, the guiding rod 391 can slide in the linear bearing 392, and the second guiding component 39 plays a role of support and guidance.

[0070] In this embodiment, the second slider 322 can be moved manually or by other means so that it can slide horizontally along the linear guide rail body 321. When it slides to the position where the pressure head 38 contacts the end of the pipe joint 6 and stops, at this time, the pin 33 is inserted into the pin hole 313 at the top of the rail mounting plate 312 and inserted into the limiting hole of the slider connecting plate 34, thereby fixing the second slider 322. At this time, the second lead screw 36 is rotated. Since the second lead screw nut 37 does not move, the second lead screw 36 can move horizontally. Due to the existence of the bearing of the second lead screw 36, the threaded movement of the second lead screw 36 is converted into the linear movement of the pressure head 38, and the pressure head 38 can squeeze the pipe joint 6 into the connecting pipe of the liquid cooling plate 5, realizing the connection between the pipe joint 6 and the liquid cooling plate 5.

[0071] Such as Figure 12As shown in the figure, two connectors 51 are connected to both side faces at the end of the liquid cooling plate 5. After the pipe connector 6 is connected to the connector 51, a passage is formed. Valves 7 are connected to two of the pipe connectors 6 to realize the inflow and outflow of the coolant. A sealing ring or the like is provided between the pipe connector 6 and the connector 51 to achieve a sealed connection.

[0072] In this embodiment, the process of changing the grouping method of the cylindrical battery cells 4, the single-row corrugated liquid cooling plate 5 and its pipe connectors 6 becomes simpler and easier to operate. The bottom plate 11 and the stop plate 15 limit the cylindrical battery cells 4 and the liquid cooling plate 5 respectively, and also effectively control the dimensional error of the grouped battery and accurately position the battery cells. Only need to gently tighten the second lead screw 36 to make the pipe connector 6 cooperate smoothly with the liquid cooling plate 5. The pipe connector 6 has a better sealing effect and the operation of the staff is more labor-saving. Moreover, a set of devices simultaneously completes the positioning and extrusion between the liquid cooling plate 5 and the cylindrical battery cells 4, and the assembly of the single-row corrugated liquid cooling plate 5 and its pipe connectors 6, avoiding multiple operations in the grouping process.

[0073] Embodiment 2:

[0074] As Figure 13 、 Figure 14 shown, the present embodiment discloses a grouping method, including the following steps:

[0075] First, push the first lead screw 23 to the frontmost end, place the first liquid cooling plate 5 at the end at the rearmost end of the insulating plate 12, close to the end plate 13, and make it in contact with the end plate 13, so that the first liquid cooling plate 5 is embedded in the groove of the end plate 13. Glue is applied in advance to the contact surface between the liquid cooling plate 5 and the cylindrical battery cells 4;

[0076] Secondly, place the cylindrical battery cells 4 into a row of spaces at the rearmost end of the insulating plate 12, arranging them in the first row. The cylindrical battery cells 4 in the first row are close to the first liquid cooling plate 5 and are in contact with it, so that the cylindrical battery cells 4 are embedded in the grooves of the first liquid cooling plate 5. Again, place the second liquid cooling plate 5 and position it close to the cylindrical battery cells 4 in the first row and in contact with them, so that the cylindrical battery cells 4 in the first row are embedded in the grooves on one side of the second liquid cooling plate 5. Glue is applied to both sides of all the liquid cooling plates 5. Two parallel pipe connectors 6 are placed between the first liquid cooling plate 5 and the second liquid cooling plate 5. The two ends of the pipe connectors 6 are already roughly connected to the first and second liquid cooling plates 5 (at this time, they are not tightly connected and subsequent extrusion is required). Connect an appropriate amount of cushion plates 27 to the front end of the second support frame 25. The extrusion insulating plate 28 is located at the forefront and is in contact with the second liquid cooling plate 5, so that the second liquid cooling plate 5 is embedded in the grooves of the extrusion insulating plate 28. Rotate the first lead screw 23 to sequentially push the second support frame 25, the cushion plate 27, and the extrusion insulating plate 28. The extrusion insulating plate 28 advances to tightly press against the second liquid cooling plate 5. The second liquid cooling plate 5 advances to clamp the middle row of cylindrical battery cells 4 between the two liquid cooling plates 5, so that the cylindrical battery cells 4 are in close contact with the two liquid cooling plates 5 and are tightly adhered to the glue on the sides of the two liquid cooling plates 5, achieving a tight bonding between the liquid cooling plates 5 and the cylindrical battery cells 4.

[0077] Push the second slider 322 to a suitable position and insert the pin 33 to fix the relative positions between the slider connecting plate 34 and the track mounting plate 312. Place the stop plate 15 into a suitable limit groove on the limit strip 14 and push the two stop plates 15 to the position for fixing the first liquid cooling plate 5. Tighten the second lead screw 36. Tighten the two second lead screws 36 simultaneously. The second lead screw 36 advances to push the pressing head 38 forward. The pressing head 38 advances to tightly press against the second liquid cooling plate 5. The second liquid cooling plate 5 advances to tightly press the pipe connector 6. The stop plate 15 supports the first liquid cooling plate 5, so that the two ends of the pipe connector 6 are squeezed into the two liquid cooling plates 5 and are closely fitted.

[0078] Repeat the above actions until all the cylindrical battery cells 4, the liquid cooling plates 5, and their pipe connectors 6 are connected into a group. During the grouping process, the number of cushion plates 27 gradually decreases.

[0079] This embodiment provides a method for grouping the cylindrical battery cells 4, multiple liquid cooling plates 5, and pipe connectors 6. In this embodiment, the cylindrical battery cells 4 and the liquid cooling plates 5 are gradually positioned and extruded with high positioning accuracy. The cylindrical battery cells 4 are closely attached to the liquid cooling plates 5, effectively controlling the dimensional error of the grouped battery, accurately positioning the battery cells, and having good heat dissipation effect, improving the grouping accuracy.

[0080] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A battery packing device, characterized in that: Including fixing components, regular components, and auxiliary installation components; The fixing assembly includes a bottom plate and a battery cell limiting assembly and a liquid cooling plate limiting assembly connected to the bottom plate. The battery cell limiting assembly is provided with a battery cell positioning groove, and the liquid cooling plate fixing assembly is located on both sides of the battery cell limiting assembly; The tidying assembly includes a first driving assembly, a plurality of detachably connected pads and an extruded insulating plate, the first driving assembly is connected to the bottom plate, and the movable end of the first driving assembly is connected to the pad and the extruded insulating plate in sequence; The auxiliary mounting assembly includes an auxiliary mounting frame assembly, a second driving assembly, and a pressure head. The auxiliary mounting frame assembly is mounted above the liquid cooling plate limiting assembly. The second driving assembly can be slidably connected to the auxiliary mounting frame assembly. The movable end of the second driving assembly is connected to the pressure head.

2. The battery assembly device according to claim 1, characterized in that: The battery cell limiting assembly includes an insulating plate, an end plate, and an end support frame; the insulating plate is connected to the bottom plate, and a plurality of arc plates are connected to the upper surface of the insulating plate, each row of arc plates forms a wave shape, and adjacent rows of arc plates can form a space adapted to the arrangement of cylindrical battery cells; the end support frame is connected to the bottom plate and is located at the end of the insulating plate, and the end plate is connected to the end support frame and connected to the top surface of the insulating plate.

3. The battery grouping device according to claim 1, characterized in that: The liquid cooling plate limiting assembly includes a limiting bar and a stop plate; the limiting bar is connected to the bottom plate, the limiting bars on both sides of the insulating plate are arranged in parallel, a plurality of first limiting grooves are opened in parallel along the length direction of the limiting bar, and the bottom of the stop plate is inserted into the first limiting groove.

4. The battery grouping device according to claim 1, characterized in that: The first driving assembly includes a first support frame, a first screw nut, a first screw, a screw connecting block, a second support frame, and a first guide assembly; the first support frame is connected to a base plate, the first screw nut is embedded in the first support frame, the first screw is connected to the first screw nut, the end of the first screw can be rotatably connected to the screw connecting block, the screw connecting block is connected to the second support frame, the first guide assembly is connected to the base plate, and the bottom of the second support frame is connected to the first guide assembly.

5. The battery grouping device according to claim 4, characterized in that: The first guide assembly includes a first slider and a guide rail. The two guide rails are symmetrically arranged along the vertical plane of the first support frame. The guide rails are fixedly connected to the base plate. Two first sliders are configured on each side of the guide rail. The second support frame is a rectangular frame structure. The two first sliders are respectively connected to both sides of one end of the second support frame.

6. The battery grouping device according to claim 1, characterized in that: The auxiliary mounting assembly also includes a latch, and the auxiliary mounting frame assembly includes a mounting frame body and a track mounting plate. The two mounting frame bodies are symmetrically connected to the base plate, and both ends of the track mounting plate are connected to the mounting frame body. The track mounting plate is provided with a latch hole that passes vertically along the length direction, and the latch is movably connected to the latch hole.

7. The battery assembly device according to claim 6, characterized in that: The second driving assembly includes a linear rail assembly, a slider connecting plate, a screw connecting plate, a second screw, and a second screw nut; the linear rail assembly is connected to the bottom of the track mounting plate, the top surface of the slider connecting plate is connected to the linear rail assembly, the screw connecting plate is connected to the bottom of the slider connecting plate, the second screw nut is connected to the screw connecting plate, the second screw is connected to the second screw nut, the end of the second screw is rotatably connected to the pressure head connecting block, and the pressure head connecting block is connected to the pressure head.

8. The battery assembly device according to claim 7, characterized in that: The second driving assembly also includes a second guide assembly; the second guide assembly includes multiple guide rods and multiple linear bearings, multiple linear bearings are axially embedded in the screw connecting plate, one end of the guide rod is fixedly connected to the pressure head, and the other end is slidably connected to the linear bearing.

9. The battery assembly device according to claim 1, characterized in that: The side of the extruded insulating plate close to the liquid cooling plate is wavy, and the liquid cooling plate is wavy.

10. A battery grouping method, characterized in that: A battery grouping device according to any one of claims 1 to 9, comprising the following steps: placing a first liquid cooling plate on a battery cell limiting assembly and positioning it through the liquid cooling plate limiting assembly, positioning a first row of cylindrical batteries in a battery cell positioning groove, placing a second liquid cooling plate on the other side of the first row of cylindrical batteries, and connecting a pipe joint between the first liquid cooling plate and the second liquid cooling plate, the movable end of a first driving assembly is sequentially connected to a plurality of pads and an extruded insulating plate, driving the first driving assembly so that the extruded insulating plate extrudes the first liquid cooling plate, the first row of cylindrical batteries, and the second liquid cooling plate; after the second driving assembly is positioned on the auxiliary mounting frame assembly, the second driving assembly drives the pressure head to connect the first liquid cooling plate and the second liquid cooling plate to the pipe joint; Repeat the above steps until all cylindrical cells, liquid cooling plates and their pipe joints are connected into a group.

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