Battery pack manufacturing system and hoisting equipment

Abstract

The utility model belongs to the field of battery manufacturing, and particularly relates to a battery pack manufacturing system and hoisting equipment. In order to improve the volume energy density of a battery pack, the utility model provides the hoisting equipment which comprises a hoisting installation base body, and the hoisting installation base body is provided with a hoisted structure used for being matched with a hoisting tool, a clamping mechanism used for clamping a battery cell group and a pushing mechanism used for downwards pushing the battery cell group clamped by the clamping mechanism. The pushing mechanism comprises a direct-acting driving mechanism of which the output end translates along the vertical direction, and a pushing surface for pushing the battery cell group is arranged at the output end. The utility model further provides a battery pack manufacturing system comprising the hoisting equipment. The pushing mechanism is used for pushing the battery cell group into the battery box body, and the hoisting equipment does not need to reduce the clamping force for clamping the battery cell group in the battery box body, so that a corresponding space does not need to be reserved in the battery box body, the volume of the battery box body is reduced, and the volume energy density of a battery pack is increased.

Description

Technical Field

[0001] The utility model belongs to the field of battery manufacturing, and in particular relates to a battery pack manufacturing system and hoisting equipment. Background Art

[0002] Traditional battery packs are mainly composed of a three-level structure of "cell-module-pack". In order to reduce costs, the current new battery packs use CTP technology. CTP (Cell To Pack) technology is also called module-free technology. There are currently two different technical routes.

[0003] Technical route 1: Integrate small modules into large modules. This technical route is represented by CATL's high-nickel ternary lithium battery.

[0004] Technical route two: Completely eliminate the module and directly integrate the battery cell (Cell) into the battery pack (Pack). Representatives of this technical route are BYD's blade battery and Zhongxin Aviation's CIR (Cell In Room, Room refers to the battery box) battery pack.

[0005] When making CTP battery packs, the battery cell group needs to be shaped. For example, the Chinese utility model patent with authorization announcement number CN219696501U and authorization announcement date 2023.09.15 discloses a five-sided pressing external stacking tool for CTP battery packs. The stacking tool includes a front pressing device, a rear fixing device cooperating with the front pressing device, a left pressing device and a right pressing device. The front pressing device and the rear fixing device can be used to achieve the shaping of the entire column of the battery cell group, and the left pressing device and the right pressing device can be used to achieve the shaping of the entire row of the battery cell group. After the battery cell group is shaped and the glue is completely solidified, the battery cell group can be hoisted into the battery box as a whole.

[0006] However, the stacking tool does not disclose how to hoist the entire battery cell group into the battery box.

[0007] The utility model discloses a kind of battery pack manufacturing devices suitable for square shell electric core CTP grouping process, which is disclosed in Chinese utility model patent with authorization announcement No.CN218677234U and authorization announcement date of 2023.03.21, the manufacturing device includes work station assembly for placing electric core, extrusion device for extruding each column electric core along the arrangement direction of each column electric core and clamping and hoisting assembly for simultaneously clamping each column electric core and for simultaneously lifting each column electric core, clamping and hoisting assembly includes two hanging plates located on both sides of each column electric core, connecting rod connecting two hanging plates, limiting nut and fixed bolt for fixing the distance between two hanging plates connected on connecting rod, transverse plate located above two hanging plates and four lifting eyes for fixedly connecting transverse plate and two hanging plates, each hanging plate is equipped with slide rod that can slide along vertical direction, and the lower end of slide rod is equipped with fixed rod.

[0008] When hoisting electric core, the entire electric core group (lock module pull rod) is clamped by clamping and hoisting assembly, after the electric core group is put into box, the module pull rod is loosened (not completely loosened), and then the clamping and hoisting assembly is lifted out. When lifting out the clamping and hoisting assembly, the module pull rod needs to be loosened to separate the clamping and hoisting assembly from the electric core, which results in that the battery box and the electric core group must reserve space for the movement of the fixed rod, resulting in that the volumetric energy density of the battery pack is relatively low. Utility model content

[0009] The utility model discloses a kind of hoisting equipment, to solve the volumetric energy density of battery pack made by using existing manufacturing device is relatively low technical problem.

[0010] The utility model also provides a kind of battery pack manufacturing system, to solve the volumetric energy density of battery pack made by using existing manufacturing device is relatively low technical problem.

[0011] To achieve the above-mentioned purpose, the technical scheme of the hoisting equipment provided by the utility model is:

[0012] A hoisting equipment includes a hoisting installation base body, a hoisted structure for cooperating with a lifting appliance, a clamping mechanism for clamping an electric core group, and a pushing mechanism for pushing down the electric core group clamped by the clamping mechanism. The pushing mechanism includes a direct drive mechanism with an output end moving horizontally in the up-down direction. The output end is provided with a pushing surface extending into the clamping space of the clamping mechanism and used for pushing the electric core group.

[0013] Further, the clamping mechanism comprises a fourth clamping mechanism for simultaneously clamping each column of the battery cells, the fourth clamping mechanism comprising two fourth clamping plates for simultaneously clamping each column of the battery cells, at least one fourth clamping plate being provided with a fourth direct-acting driving mechanism for driving the fourth clamping plate to approach or move away from the battery cell group, and the two fourth clamping plates being respectively used for clamping end plates at two ends of each column of the battery cells, each fourth clamping plate being provided at a lower end thereof with a guide plate for being inserted into the battery box and for guiding the end plate, the thickness of the guide plate being less than the thickness of the fourth clamping plate in the arrangement direction of the two fourth clamping plates.

[0014] Further, the clamping mechanism further comprises a third clamping mechanism for simultaneously clamping each column of the battery cells, the third clamping mechanism comprising two third clamping plates for simultaneously clamping each column of the battery cells, at least one third clamping plate being provided with a third direct-acting driving mechanism for driving the third clamping plate to approach or move away from the battery cell group, and the lowermost end of the third clamping plate being higher than the lowermost end of the fourth clamping plate.

[0015] Further, the hoisting structure comprises at least three balancing members mounted on the hoisting installation base body, each balancing member being provided with a loaded lifting point for cooperating with the lifting device after the battery cell group is clamped by the lifting device and an unloaded lifting point for cooperating with the lifting device when the battery cell group is not clamped by the lifting device.

[0016] The hoisting device of the utility model has the advantages that: the utility model is an exploratory invention. When the hoisting device in the technical scheme is applied to a battery pack manufacturing system, the clamping mechanism can clamp the battery cell group after shaping, and the friction between the corresponding clamping mechanism and the battery cell group can ensure that the battery cell group will not be separated from the hoisting device under the action of gravity. When the hoisting device moves to the position directly above the battery box, the clamping mechanism keeps clamping the battery cell group, and the jacking mechanism jacks up the battery cell group downward to overcome the friction on the battery cell group and push the battery cell group into the battery box. In summary, the jacking mechanism in the technical scheme can push the battery cell group into the battery box while the clamping mechanism still clamps the battery cell group, and the space required when the clamping mechanism is opened in the battery box does not need to be reserved. Therefore, under the premise that the volume of the battery cell group does not change, compared with the manufacturing device in the background art, the hoisting device in the technical scheme can reduce the volume of the battery box and improve the volume energy density of the battery pack.

[0017] To achieve the above-mentioned purpose, the technical scheme of the battery pack manufacturing system provided by the utility model is:

[0018] The battery pack manufacturing system comprises a shaping device and a hoisting device for hoisting the shaped battery cell group, the hoisting device comprises a hoisting mounting base, a hoisted structure for cooperating with a lifting appliance, a clamping mechanism for clamping the battery cell group and a pushing mechanism for pushing the battery cell group clamped by the clamping mechanism downward, the pushing mechanism comprises a direct-acting driving mechanism with an output end moving up and down, and a pushing surface on the output end for pushing the battery cell group into the clamping space of the clamping mechanism.

[0019] Further, the shaping device comprises a support table for supporting the battery cell group and a second clamping mechanism for clamping each column of battery cells simultaneously, and the hoisting device comprises a fourth clamping mechanism for clamping each column of battery cells simultaneously; the second clamping mechanism comprises two second clamping plates for clamping each column of battery cells simultaneously, and the two second clamping plates are respectively used for clamping the end plates at both ends of each column of battery cells, and at least one second clamping plate is provided with a second direct-acting driving mechanism for driving the second clamping plate to approach or move away from the battery cell group; the fourth clamping mechanism comprises two fourth clamping plates for clamping each column of battery cells simultaneously, and the two fourth clamping plates are respectively used for clamping the end plates at both ends of each column of battery cells, and at least one fourth clamping plate is provided with a fourth direct-acting driving mechanism for driving the fourth clamping plate to approach or move away from the battery cell group.

[0020] Further, the lower end of each fourth clamping plate is provided with a guide plate for being inserted into the battery box and for guiding the end plate, and the opposite surfaces of the two second clamping plates are respectively provided with an insertion slot for the guide plate.

[0021] Further, the two guide plates are used for being embedded into the groove part on the end plate when clamping the end plate, so that the distance between the opposite surfaces of the two guide plates is equal to the distance between the two second clamping plates when all the clamping plates clamp the battery cell group.

[0022] Further, the upper end of each second clamping plate is provided with a protruding part for clamping the corresponding end plate and protruding upward, and the corresponding avoiding slot is provided on each fourth clamping plate.

[0023] Further, the shaping device further comprises a first clamping mechanism for clamping each row of battery cells simultaneously, and the hoisting device further comprises a third clamping mechanism for clamping each row of battery cells simultaneously; the first clamping mechanism comprises two first clamping plates for clamping each row of battery cells simultaneously, and at least one first clamping plate is provided with a first direct-acting driving mechanism for driving the first clamping plate to approach or move away from the battery cell group; the third clamping mechanism comprises two third clamping plates for clamping each row of battery cells simultaneously, and at least one third clamping plate is provided with a third direct-acting driving mechanism for driving the third clamping plate to approach or move away from the battery cell group.

[0024] Further, the hoisted structure comprises at least three balancing members mounted on the hoisting installation base body, each balancing member is provided with a loaded lifting point for cooperating with the lifting appliance after the hoisting device clamps the battery cell group and an unloaded lifting point for cooperating with the lifting appliance when the hoisting device does not clamp the battery cell group.

[0025] The battery pack manufacturing system has the advantages that: the battery pack manufacturing system is an exploratory invention. The battery cell group can be shaped by the shaping device, and after shaping, the battery cell group can be clamped by the clamping mechanism, and the friction between the corresponding clamping mechanism and the battery cell group is used to ensure that the battery cell group will not be separated from the hoisting device under the action of gravity; when the hoisting device moves directly above the battery box, the clamping mechanism keeps the state of clamping the battery cell group, and the jacking mechanism pushes the battery cell group downward to overcome the friction force of the battery cell group and push the battery cell group into the battery box. In summary, the jacking mechanism in the technical solution can push the battery cell group into the battery box while the clamping mechanism is still clamping the battery cell group, and there is no need to reserve space in the box for the clamping mechanism to open, so that the volume of the battery box can be reduced and the volumetric energy density of the battery pack can be improved when the hoisting device in the technical solution is used to manufacture the battery pack under the premise that the volume of the battery cell group remains unchanged. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 A structure schematic view of a battery pack manufactured by a specific embodiment of the battery pack manufacturing system of the utility model;

[0027] Figure 2 For Figure 1 A structure schematic view of a battery cell before being assembled into a box;

[0028] Figure 3 A structure schematic view of a specific embodiment of the battery pack manufacturing system of the utility model;

[0029] Figure 4 For Figure 3 A structure schematic view of the shaping device in the utility model not clamping the battery cell group;

[0030] Figure 5 For Figure 3 A structure schematic view of the shaping device in the utility model clamping the battery cell group;

[0031] Figure 6 For Figure 3 A structure schematic view of the hoisting device in the utility model transporting the battery cell group from one perspective;

[0032] Figure 7 For Figure 3 A structure schematic view of the hoisting device in the utility model transporting the battery cell group from another perspective;

[0033] Figure 8for Figure 3 A partial perspective diagram of the lifting equipment pushing the battery cell group into the battery box;

[0034] Figure 9 for Figures 6-8 Schematic diagram of the lifting mechanism.

[0035] Description of reference numerals:

[0036] 1. Battery case; 2. Cell group; 21. Cell; 22. End plate; 221. Groove portion; 222. Non-groove portion; 3. Shaping equipment; 31. Support table; 32. First clamping plate; 321. First movable seat; 33. Second clamping plate; 331. Second movable seat; 332. Slot; 333. Protrusion; 34. First fixed seat; 35. First screw rod; 36. Second fixed seat; 37. Second screw rod; 4. Hoisting equipment; 41. Push mechanism; 42. Balance member; 43. Load lifting ring; 44. No-load lifting ring; 45. Hoisting mounting frame; 46. Third clamping mechanism; 461. Third clamping plate; 47. Fourth clamping mechanism; 471. Fourth clamping plate; 48. Avoidance groove; 49. Guide plate; 5. Lifting fixture; 6. Limit rod; 61. Stopper; 7. Support plate. DETAILED DESCRIPTION

[0037] To solve the problems in the background technology, the core inventive concept of the present utility model is as follows: the lifting equipment is used to clamp the battery cell group so that the friction between the lifting equipment and the battery cell group is greater than the gravity of the battery cell group, ensuring that the battery cell group will not fall during transportation; after the transportation is completed, the lifting equipment's pushing mechanism is used to push the battery cell group downward, thereby overcoming the friction between the lifting equipment and the battery cell group, causing the battery cell group to separate from the lifting equipment and enter the battery box. Since the lifting equipment does not need to reduce the clamping force of the battery cell group in the battery box, no corresponding space needs to be reserved in the battery box, thereby increasing the volume energy density of the battery pack.

[0038] The present invention is further described in detail below with reference to the embodiments.

[0039] Specific embodiment 1 of the hoisting equipment provided by the utility model:

[0040] Reference Figures 1-2 As shown, the battery cell group 2 includes multiple battery cells 21 and two end plates 22. All battery cells 21 form , and two end plates 22 are respectively arranged at both ends of each column of battery cells 21.

[0041] During the actual manufacturing process of the battery pack, it is necessary to decide whether to reshape the cell group 2 only in the length direction, only in the width direction, or both in the length and width directions according to actual working conditions.

[0042] Referring to Figures 1-3 and 6-9, the lifting device 4 is used in the battery pack manufacturing system, and the length direction and the width direction of the cell group 2 need to be shaped, and the lifting device 4 is introduced as follows:

[0043] The lifting device 4 comprises a lifting installation base body, a hoist 5 is arranged on the lifting installation base body, a third clamping mechanism 46 for clamping each row of cells 21 at the same time and a fourth clamping mechanism 47 for clamping each column of cells 21 at the same time are arranged on the lifting installation base body, and the third clamping mechanism 46 and the fourth clamping mechanism 47 are used to clamp the cell group 2 which is still clamped by the shaping device 3; the lifting device 4 further comprises a pushing mechanism 41 for pushing the cell group 2 clamped by the lifting device 4 downward, and the pushing mechanism 41 comprises a direct-acting driving mechanism with an output end moving up and down, and a pushing surface on the output end is arranged to extend into the clamping space of the clamping mechanism and is used to push the cell group 2. The direct-acting driving mechanism can be a linear motor, a hydraulic cylinder, an electric cylinder, a screw lift or the like, the output end directly pushes on the cell group 2, the pushing surface is the end surface of the output end, or a push plate is fixedly connected to the output end, the push plate pushes on the cell group 2, and the pushing surface is the lower surface of the push plate.

[0044] In the lifting device 4, a force sensor for monitoring the clamping force of the third clamping mechanism 46 and the fourth clamping mechanism 47 on the cell group 2 can also be arranged, and the clamping force is used to determine whether each clamping mechanism clamps the cell group 2; of course, each clamping mechanism can also be directly controlled to clamp the cell group 2, so that the maximum static friction force corresponding to the clamping force applied by each clamping mechanism is much larger than the weight of the cell group 2, so that the corresponding force sensor does not need to be arranged.

[0045] In one specific embodiment, as shown in Figures 6-9 , the lifting installation base body is a lifting installation frame 45, but in other specific embodiments, the lifting installation base body can also be a lifting installation plate. Compared with the lifting installation plate, the weight of the lifting installation frame 45 is lighter, which can reduce the total weight of the lifting device 4, thereby facilitating the lifting of the lifting device 4.

[0046] As shown in Figures 6-9As shown, the fourth clamping mechanism 47 includes two fourth clamping plates 471 for clamping each column of the battery cells 21 simultaneously, and the two fourth clamping plates 471 are respectively used for clamping the end plates 22 at both ends of each column of the battery cells 21, wherein one of the fourth clamping plates 471 is provided with a fourth direct drive mechanism for driving the corresponding fourth clamping plate 471 to move close to or away from the battery cell group 2. Meanwhile, the third clamping mechanism 46 includes two third clamping plates 461 for clamping each row of the battery cells 21 simultaneously, wherein one of the third clamping plates 461 is provided with a third direct drive mechanism for driving the corresponding third clamping plate 461 to move close to or away from the battery cell group 2, which is simple in structure and can be applied to battery cell groups 2 of various length and width specifications. Among them, the lowermost end of the third clamping plate 461 is higher than the lowermost end of the fourth clamping plate 471, so as to increase the height of the part of the third clamping plate 461 clamping the battery cell group 2, thereby better clamping the battery cell group 2.

[0047] The third direct drive mechanism and the fourth direct drive mechanism each include a fixed seat mounted on the hoisting installation base, a lead screw threadedly cooperating with the fixed seat, and a movable seat movably cooperating with the hoisting installation base in the extension direction of the corresponding lead screw. One third clamping plate 461 and one fourth clamping plate 471 are mounted on the corresponding movable seat, and a rotary power source is fixedly installed on each movable seat. The output end of the rotary power source is in transmission connection with the lead screw. The other third clamping plate 461 and the other fourth clamping plate 471 are fixedly installed on the hoisting installation frame 45, and the third clamping plate 461 and the fourth clamping plate 471 can be controlled to clamp the battery cell group 2 by controlling the rotation of the lead screw.

[0048] The pushing mechanism 41 includes a fixed seat mounted on the hoisting installation base and a lead screw extending in the up-down direction. A push plate is arranged below the fixed seat, and a rotary power source is installed on the upper surface of the push plate. The output end of the rotary power source is in transmission connection with the lead screw, so as to drive the push plate to move up and down by rotating the lead screw.

[0049] Of course, in other specific embodiments, reference Figures 6-9As shown, the two third clamping plates 461 can be provided with third straight driving mechanisms, or the two fourth clamping plates 471 can be provided with fourth straight driving mechanisms, or at least one straight driving mechanism is an electric push rod, a pneumatic cylinder, a hydraulic cylinder, an electric cylinder or the like, and the corresponding clamping plate is installed on the output end of the straight driving mechanism, or the pushing mechanism 41 comprises a pushing plate and a straight driving source, the output end of the straight driving source is in transmission connection with the pushing plate to drive the pushing plate to move up and down, and the straight driving source can be an electric push rod, a pneumatic cylinder, an electric cylinder or the like, or one third clamping plate 461 is provided with a rotary driving source, the output end of the rotary driving source is in transmission connection with the corresponding third clamping plate 461 to drive the third clamping plate 461 to rotate around one end other than the lower end, when clamping the battery cell group 2, first drive the third clamping plate 461 to rotate outward away from the rotary shaft, and move the hoisting device 4 downward to make the battery cell group 2 located between the two third clamping plates 461, then drive the corresponding third clamping plate 461 to rotate until the two third clamping plates 461 are parallel to each other, at this time, the distance between the two third clamping plates 461 is constant, so that the battery cell group 2 with a set width can be clamped, at this time, the hoisting device 4 can only be suitable for a specific width specification of the battery cell group 2, similarly, each third clamping plate 461 can also be provided with a rotary driving source, or one or two fourth clamping plates 471 are provided with a rotary driving source, and the rotary driving source can be a rotary motor, a rotary pneumatic cylinder, a rotary hydraulic cylinder or the like, which will not be described here.

[0050] When the hoisting device 4 in the technical solution is applied to the battery pack manufacturing system, after the shaping is completed, the third clamping mechanism 46 and the fourth clamping mechanism 47 can be used to clamp the battery cell group 2 still clamped by the shaping device, to avoid the rebound of the battery cell group 2 (when the battery cells in the battery cell group 2 are bonded together by double-sided adhesive tape, the rebound amount of the battery cell group 2 is larger), then the shaping device can release the battery cell group 2. When hoisting, the lifting appliance 5 is connected with the hoisted structure, the hoisting device 4 and the battery cell group 2 are simultaneously hoisted by the lifting appliance 5, at this time, the third clamping mechanism 46 and the fourth clamping mechanism 47 clamp the battery cell group 2, and the friction force between the corresponding clamping mechanism and the battery cell group 2 is used to ensure that the battery cell group 2 will not be separated from the hoisting device 4 under the action of gravity; when the hoisting device 4 moves to the top of the battery box 1, the third clamping mechanism 46 and the fourth clamping mechanism 47 keep the state of clamping the battery cell group 2, and the pushing mechanism 41 pushes the battery cell group 2 downward to overcome the friction force on the battery cell group 2 and push the battery cell group 2 into the battery box 1.

[0051] To sum up, the lifting equipment 4 in the present technical solution can clamp the rows and columns of the shaped battery cell group 2 to prevent the battery cell group 2 from rebounding, thereby adapting to the production of the battery pack; at the same time, the pushing mechanism 41 in the present technical solution can push the battery cell group 2 into the battery box when the third clamping mechanism 46 and the fourth clamping mechanism 47 are still clamping the battery cell group 2, and there is no need to reserve the space required when the third clamping mechanism 46 and the fourth clamping mechanism 47 are opened in the box. Therefore, under the premise that the volume of the battery cell group 2 remains unchanged, when the battery pack is produced using the lifting equipment 4 in the present technical solution, compared with the production device in the background technology, the volume of the battery box 1 can be reduced and the volume energy density of the battery pack can be improved.

[0052] In order to further improve the volume energy density of the battery pack, as a specific implementation method, refer to Figures 6-9 As shown, the lower end of each fourth clamping plate 471 is provided with a guide plate 49 for inserting into the battery case 1 and cooperating with the inner wall of the battery case 1 to guide movement. In the arrangement direction of the two fourth clamping plates 471, the thickness of the guide plate 49 is less than the thickness of the fourth clamping plate 471. Compared with the technical solution of directly inserting the lower end of the fourth clamping plate 471 into the battery case 1, the thickness of the guide plate 49 is less than the thickness of the fourth clamping plate 471, thereby reducing the size of the battery case 1 in the length direction of the battery cell group 2, reducing the volume of the battery case 1, and improving the volume energy density of the battery pack. Of course, in other specific embodiments, refer to Figures 6-9 As shown, the lower end of the fourth clamping plate 471 can also be directly inserted into the battery box 1.

[0053] Reference Figure 8 As shown, a limit rod 6 is hinged on the trolley for placing the battery box 1. Before the pushing mechanism 41 pushes the battery cell group 2 downward, the limit rod 6 cooperates with the hoisting component stop to prevent the hoisting component from swinging horizontally; when the pushing mechanism 41 pushes the battery cell group 2 downward, the battery box 1 and the fourth clamping plate 471 cooperate with each other in the up and down directions (equivalent to the battery box 1 supporting the fourth clamping plate 471) to prevent the hoisting equipment 4 from shaking. At the same time, a support plate 7 is also provided between the third clamping plate 461 and the battery box 1, so that the battery box 1 indirectly cooperates with the third clamping plate 461 in the up and down directions through the support plate 7 (equivalent to the battery box 1 indirectly supporting the third clamping plate 461) to increase the supported area of ​​the hoisting component, reduce the pressure on the fourth clamping plate 471, and avoid deformation of the fourth clamping plate 471.

[0054] In the process of making the battery pack, the workers will glue the bottom of the battery box, and the pushing mechanism 41 pushes the battery cell group 2 downward to make the battery cell group 2 contact with the glue. However, when the pressure between the battery cell group 2 and the glue rises to a certain degree, even if the output end of the direct-acting driving mechanism continues to extend, the output end cannot move downward any more, and the hoisting and installing base body will move upward instead, thereby causing the battery cell group 2 to exert a smaller pressure on the glue, which is not conducive to the sufficient mixing of the battery cell group 2 and the glue.

[0055] In order to overcome the above problems, a stopper 61 is further installed on the limiting rod 6. The stopper 61 can be a rod, a plate or the like. When the limiting rod 6 rotates to the vertical state, the stopper 61 is located above the hoisting and installing base body. When the hoisting and installing base body moves downward to a certain degree, the stopper 61 stops cooperating with the hoisting and installing base body, thereby avoiding the upward movement of the hoisting and installing base body. Thereafter, in the process of the output end of the direct-acting driving mechanism continuing to extend, the output end will move downward, thereby making the battery cell group 2 exert a greater pressure on the glue, making the battery cell group 2 and the glue mix sufficiently, and improving the structural strength of the battery pack.

[0056] Since the center of gravity of the hoisting device 4 when not clamping the battery cell group 2 and the center of gravity of the hoisting device 4 after clamping the battery cell group 2 are not on the same vertical line, in order to facilitate repeated hoisting of the hoisting device 4, referring to Figures 6-9 The hoisted structure includes at least three balancing members 42 installed on the hoisting and installing base body. Each balancing member 42 is provided with a loaded lifting point for cooperating with the lifting appliance 5 after the hoisting device 4 clamps the battery cell group 2, so as to make the battery cell group 2 and the hoisting device 4 both keep a horizontal state when the hoisting appliance 5 lifts the hoisting device 4 clamping the battery cell group 2. Each balancing member 42 is also provided with an unloaded lifting point for cooperating with the lifting appliance 5 when the hoisting device 4 does not clamp the battery cell group 2, so as to make the hoisting device 4 keep a horizontal state when the hoisting appliance 5 lifts the hoisting device 4 not clamping the battery cell group 2. By setting two sets of lifting points, without replacing the lifting appliance 5, by replacing different lifting points, the same set of lifting appliance 5 can lift the hoisting device 4 clamping the battery cell group 2 and the hoisting device 4 not clamping the battery cell group 2, facilitating repeated hoisting of the hoisting device 4. In Figure 9 The number of balancing members 42 is four in the specific embodiment shown in

[0057] In the specific embodiment shown in Figures 6-9 The loaded lifting point is composed of a loaded lifting ring 43, and the unloaded lifting point is composed of an unloaded lifting ring 44. Of course, in other specific embodiments, the lifting points can be composed of lifting holes, lifting hooks or the like.

[0058] In other specific embodiments, referring to Figures 6-9As shown, the hoisted structure can also only include a set of lifting points, which are composed of lifting rings, lifting holes, lifting hooks and other structures arranged on the hoisting installation base body, and there are two sets of lifting devices (hereinafter referred to as first lifting device and second lifting device) in the factory building. The battery box 1 and the shaping device 3 are located on different trolleys. After shaping is completed, first, the first lifting device is used to hoist the hoisting device 4 to the shaping device 3, and the hoisting device 4 clamps the cell group 2; second, the first lifting device is removed, and the trolley on which the shaping device 3 is located is pushed to push the hoisting device 4 to the second lifting device; then, the second lifting device is used to transfer the cell group 2 and push the cell group 2 into the battery box 1; finally, the second lifting device is removed, and the trolley on which the battery box 1 is located is pushed to push the hoisting device 4 to the first lifting device, and the hoisting device 4 can be lifted by using the first lifting device.

[0059] The specific embodiment 2 of the hoisting device provided by the utility model:

[0060] The main difference between this embodiment and the specific embodiment 1 is that in the specific embodiment 1, the hoisting device simultaneously includes the third clamping mechanism and the fourth clamping mechanism, while in this embodiment, the cell group only needs to be shaped in one direction, so the hoisting device only includes the third clamping mechanism or the fourth clamping mechanism.

[0061] The specific embodiment 3 of the hoisting device provided by the utility model:

[0062] The main difference between this embodiment and the specific embodiment 1 is that in the specific embodiment 1, the hoisting device clamps the cell group which is still clamped by the shaping device, therefore, the area of the clamping plate of the hoisting device for clamping the cell group is smaller, and the area of the clamping surface of the second clamping plate for clamping the cell is equal to the area of the clamping surface of the fourth clamping plate for clamping the cell; while in this embodiment, referring to the Chinese utility model patent with the authorization announcement number CN219696501U, the cell group is bonded by using glue, after the glue is completely solidified, the clamping mechanism of the shaping mechanism is opened, and the cell group is hoisted by using the hoisting device, at this time, the clamping plate of the hoisting device can clamp the entire side surface of the cell group.

[0063] The specific embodiment 1 of the battery pack manufacturing system provided by the utility model:

[0064] Referring to Figures 1-2 As shown, the cell group 2 includes a plurality of cells 21 and two end plates 22, all the cells 21 form , and the two end plates 22 are arranged at both ends of each row of cells 21.

[0065] As Figures 3-9As shown in the figure, the battery pack manufacturing system comprises a shaping device 3 and a hoisting device 4 for cooperating with the lifting appliance 5 to hoist the shaped battery cell group 2; the shaping device 3 is adapted to the hoisting device 4, the specific structure of the hoisting device 4 is the same as that in any one of the specific embodiments 1-2 of the hoisting device 4 of the utility model, only the part of the cooperation between the hoisting device 4 and the shaping device 3 will be described below, and the specific structure of the hoisting device 4 will not be described again.

[0066] As shown in the figure, Figures 3-9 The shaping device 3 comprises a support table 31 for supporting the battery cell group 2, a first clamping mechanism for clamping each row of battery cells 21 simultaneously and a second clamping mechanism for clamping each column of battery cells 21 simultaneously, and the hoisting device 4 comprises a third clamping mechanism 46 and a fourth clamping mechanism 47; each clamping mechanism (including four different clamping mechanisms) is used for clamping different areas on the outer circumferential surface of the battery cell group 2, and each clamping mechanism does not interfere with each other in the vertical direction. Among them, the clamping force of the shaping device 3 on the battery cell group 2 can be detected by a force sensor to ensure that the battery cell group 2 is shaped to a specified size; or the first clamping mechanism and the second clamping mechanism of the shaping device 3 are directly moved to the set position, thereby directly shaping the battery cell group 2 to a specified size.

[0067] The first clamping mechanism and the second clamping mechanism are used for performing row shaping and column shaping on the battery cell group 2, after the shaping is completed, the third clamping mechanism 46 and the fourth clamping mechanism 47 are used for clamping the battery cell group 2 still clamped by the shaping device 3, so as to avoid the volume of the battery cell group 2 from increasing due to the rebound of the battery cell group 2, and ensure that the battery cell group 2 can be placed in the battery box. When hoisting, the lifting appliance 5 is connected with the hoisted structure, the hoisting device 4 and the battery cell group 2 are simultaneously hoisted through the lifting appliance 5, at this time, the third clamping mechanism 46 and the fourth clamping mechanism 47 clamp the battery cell group 2, and the friction force between the corresponding clamping mechanism and the battery cell group 2 is used to ensure that the battery cell group 2 will not be separated from the hoisting device 4 under the action of gravity; when the hoisting device 4 moves to the top of the battery box body 1, the third clamping mechanism 46 and the fourth clamping mechanism 47 keep the state of clamping the battery cell group 2, and the pushing mechanism 41 pushes the battery cell group 2 downward, so as to overcome the friction force suffered by the battery cell group 2 and push the battery cell group 2 into the battery box body 1. In summary, the shaping device 3 in the technical solution can perform column shaping and row shaping on the battery cell group 2, the hoisting device 4 can clamp each row and each column of the battery cell group 2 after shaping, and the rebound of the battery cell group 2 is avoided, so as to adapt to the production of the battery pack; at the same time, the pushing mechanism 41 in the technical solution can push the battery cell group 2 into the battery box while the third clamping mechanism 46 and the fourth clamping mechanism 47 still clamp the battery cell group 2, and the space required when the third clamping mechanism 46 and the fourth clamping mechanism 47 are opened in the box body is not needed, so that the volume of the battery box body 1 can be reduced and the volume energy density of the battery pack can be improved when the battery pack production system in the technical solution is used to produce the battery pack, on the premise that the volume of the battery cell group 2 is unchanged.

[0068] Referring to Figures 3-9 and the third clamping mechanism 46 and the fourth clamping mechanism 47 in the specific embodiment of the hoisting device 4 of the utility model, in order to simplify the structure, the second clamping mechanism includes two second clamping plates 33 for simultaneously clamping each column of battery cells 21, and the two second clamping plates 33 are respectively used for clamping the end plates 22 at both ends of each column of battery cells 21, wherein one of the two second clamping plates 33 is provided with a second direct-acting driving mechanism for driving the corresponding second clamping plate 33 to approach or move away from the battery cell group 2; the specific structure of the fourth clamping mechanism 47 will not be described here, and the spacing between the two fourth clamping plates 471 is smaller than the spacing between the two second clamping plates 33 when all the clamping plates jointly clamp the battery cell group 2.

[0069] As Figures 3-9As shown, the second direct drive mechanism comprises a second fixed seat 36 fixed on the support table 31, a second screw rod 37 threadedly matched with the second fixed seat 36, and a second moving seat 331 guidedly mounted on the support table 31, and one second clamping plate 33 mounted on the second moving seat 331 can be driven to move by rotating the second screw rod 37; the support table 31 is further provided with the second fixed seat 36, and another second clamping plate 33 is mounted on the second fixed seat 36. Of course, in other specific embodiments, both of the second clamping plates 33 can be configured with the direct drive mechanism.

[0070] Correspondingly, referring to Figures 1-7 As shown, each end plate 22 has a groove extending in the vertical direction on the plate surface away from the battery cell 21, and the upper end of the groove extends to the upper edge of the end plate 22. The part of the end plate 22 corresponding to the groove constitutes a groove part 221, and the remaining part constitutes a non-groove part 222. The second clamping plate 33 is used to clamp the non-groove part 222 of the end plate 22, and the fourth clamping plate 471 is used to clamp the groove part 221 of the end plate 22, and the fourth clamping plate 471 is matched with the shape of the groove part 221. After the battery cell group 2 is transferred above the battery box 1, in the process of pushing the battery cell group 2 downward by the pushing mechanism 41, the fourth clamping plate 471 and the groove on the end plate 22 slide in the vertical direction in a guided manner, so as to ensure that the battery cell group 2 always moves in the vertical direction, avoiding the swing of the battery cell group 2.

[0071] Specifically, when the same set of battery pack production system is used to produce battery packs of multiple specifications, and the force applied by the pushing mechanism 41 to the battery cell group 2 cannot act on the vertical line where the gravity center of the battery cell group 2 is located, the battery cell group 2 will be deviated and have a tendency to swing. By guiding the battery cell group 2 through the fourth clamping plate 471, the swing of the battery cell group 2 is avoided.

[0072] However, in other specific embodiments, the end plate 22 can also be a flat plate, at this time, the distance between the second clamping plates 33 is the same as the distance between the fourth clamping plates 471. When producing a single specification of battery pack, the force applied by the pushing mechanism 41 to the battery cell group 2 can be directly applied to the vertical line where the gravity center of the battery cell group 2 is located, so as to ensure that the battery cell group 2 always moves in the vertical direction; when producing battery packs of different specifications, different hoisting equipment 4 can be used.

[0073] As Figures 3-9As shown, as a specific embodiment, the fourth clamping plate 471 is provided with a guide plate 49 at the lower end, and the thickness of the guide plate 49 is smaller than that of the fourth clamping plate 471, thereby further improving the volumetric energy density of the battery pack, which will not be described here. Further, the two guide plates 49 are used to be embedded in the groove part 221 on the end plate 22 when clamping the end plate 22, so that when all the clamping plates jointly clamp the cell group 2, the distance between the two guide plates 49 on the two fourth clamping plates 471 respectively located on the plane of the opposite plate surface is equal to the distance between the two second clamping plates 33, that is, the thickness of the guide plate 49 is equal to the groove depth of the groove part 221, and the guide plate 49 is completely embedded in the groove part 221 of the end plate 22. When the length of the cell group 2 is determined, the size of the battery box 1 in the length direction depends on the following conditions: (1) a certain reserved gap needs to be reserved between the end plate 22 and the inner wall of the battery box 1; (2) at least a certain reserved gap needs to be reserved between the guide plate 49 and the inner wall of the battery box 1, which is the same as condition (1). When the guide plate 49 is completely embedded in the groove part 221 of the end plate 22, condition (2) is automatically satisfied when condition (1) is satisfied, so the length of the battery box 1 is the shortest, that is, the volume of the battery box 1 is the smallest, and the volumetric energy density of the battery pack is the largest; at the same time, the thickness of the guide plate 49 is the thickest, which can effectively increase the structural strength of the guide plate 49.

[0074] As shown, Figures 1-9 In order to facilitate lifting the cell group 2, as a specific embodiment, the opposite plate surface of each second clamping plate 33 is provided with a insertion slot 332 for inserting the guide plate 49, and the thickness of the insertion slot 332 is greater than that of the guide plate 49 in the arrangement direction of the two second clamping plates 33.

[0075] When lifting the cell group 2, first, the guide plate 49 is inserted into the insertion slot 332 (at this time, the fourth clamping plate 471 has not clamped the cell group 2), then the fourth clamping plate 471 clamps the cell group 2 (at this time, the guide plate 49 is out of the insertion slot 332 and moves to the groove of the end plate 22), and finally the shaping device 3 releases the cell group 2. During the process of inserting the guide plate 49 into the insertion slot 332, the lifting device 4 slowly descends, and the insertion slot 332 and the guide plate 49 can guide the lifting device 4, facilitate the lifting device 4 to move downward in the vertical direction, avoid the collision between the lifting device 4 and the cell group 2, and facilitate lifting the cell group 2.

[0076] But in other specific embodiments, referring to Figures 1-9As shown, the slot 332 can also not be arranged, and when the hoisting device 4 hoists the battery cell group 2, the third clamping plate 461 and the fourth clamping plate 471 can be first opened to a larger angle, and after the lower end of the third clamping plate 461 and the fourth clamping plate 471 is lowered to the upper end of the battery cell group 2, the hoisting device 4 is stopped from being lowered, and the corresponding clamping mechanism is adjusted to make the third clamping plate 461 and the fourth clamping plate 471 gap-fit with the battery cell group 2, so that the battery cell group 2 guides the hoisting device 4; or, the groove depth of the recessed groove portion 221 on the end plate 22 is greater than the thickness of the guide plate 49, and the guide plate 49 can be directly inserted into the recessed groove portion 221 during hoisting; or, the total groove depth of the slot 332 and the recessed groove portion 221 is greater than the thickness of the guide plate 49.

[0077] In order to better arrange and shape, as a specific embodiment, as shown in the drawings, Figures 1-9 As shown, the upper end of each second clamping plate 33 is provided with a protruding portion 333 for clamping the corresponding end plate 22 and protruding upward, and each fourth clamping plate 471 is provided with a corresponding avoiding groove 48, and the protruding portion 333 can press the upper half of the battery cell group 2, so that the battery cell group 2 is better shaped. However, in other specific embodiments, the protruding portion 333 can also not be arranged, at this time, the second clamping plate 33 can only clamp the lower half of the battery cell group 2, and the shaping effect is poor, but the shaping can also be performed.

[0078] In order to simplify the structure, the first clamping mechanism includes two first clamping plates 32 for simultaneously clamping each row of battery cells 21, and at least one first clamping plate 32 is provided with a first direct drive mechanism for driving the corresponding first clamping plate 32 to approach or move away from the battery cell group 2; the structure of the third clamping mechanism 46 will not be described here; the spacing between the two first clamping plates 32 is equal to the spacing between the two third clamping plates 461, and the first clamping plate 32 and the third clamping plate 461 are respectively used for clamping the upper half and the lower half of the battery cell group 2, and the structure is simple.

[0079] In the present embodiment, the first direct drive mechanism includes a first fixed seat 34 fixed on the support table 31, a first screw rod 35 threadedly matched with the first fixed seat 34, and a first moving seat 321 guided and installed on the support table 31, and one first clamping plate 32 installed on the first moving seat 321 can be driven to move by rotating the first screw rod 35; the support table 31 is also provided with a first fixed seat 34, and another first clamping plate 32 is installed on the first fixed seat 34. Of course, in other specific embodiments, the two first clamping plates 32 can also be provided with direct drive mechanisms, and the specific structure of the direct drive mechanism can refer to the direct drive mechanism in the specific embodiment of the hoisting device 4 of the utility model, and will not be described here.

[0080] In the present embodiment, the hoisting device 4 can also have a full-load lifting point and an empty-load lifting point at the same time, which will not be described here.

[0081] The specific embodiment 2 of the battery pack manufacturing system provided by the utility model is as follows:

[0082] The main difference between the embodiment and the specific embodiment 1 is that, in the specific embodiment 1, the hoisting device clamps the battery cell group still clamped by the shaping device, so the area of the clamping plate of the hoisting device clamping the battery cell group is small, while in the embodiment, the battery cell group is bonded by glue, the clamping mechanism of the shaping mechanism is opened after the glue is completely solidified, and the hoisting device hoists the battery cell group, at this time, the clamping plate of the hoisting device can clamp the entire side surface of the battery cell group. The shaping mechanism can be the five-surface pressing CTP battery pack external stacking tool in the Chinese utility model patent with the authorized announcement number CN219696501U.

[0083] Finally, it should be noted that the above is only the preferred embodiment of the utility model, and is not used to limit the utility model, although the utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, the technical solutions recorded in the foregoing embodiments can still be modified without creative labor, or some technical features can be replaced equivalently. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model should be included in the protection scope of the utility model.

Claims

1. A hoisting apparatus, characterized in that, The lifting installation base body is provided with a hoist-lift structure for cooperating with a lifting appliance, a clamping mechanism for clamping the battery cell group, and a pushing mechanism for pushing down the battery cell group clamped by the clamping mechanism. The pushing mechanism comprises a direct-acting driving mechanism with an output end moving in the up-down direction. The output end is provided with a pushing surface extending into the clamping space of the clamping mechanism and used for pushing the battery cell group.

2. The hoisting apparatus of claim 1, wherein, The clamping mechanism comprises a fourth clamping mechanism for simultaneously clamping each column of battery cells. The fourth clamping mechanism comprises two fourth clamping plates for simultaneously clamping each column of battery cells. At least one fourth clamping plate is provided with a fourth direct-acting driving mechanism for driving the fourth clamping plate to approach or move away from the battery cell group. The two fourth clamping plates are respectively used for clamping the end plates at both ends of each column of battery cells. The lower end of each fourth clamping plate is provided with a guide plate for inserting into the battery box and guiding the end plate. In the arrangement direction of the two fourth clamping plates, the thickness of the guide plate is less than the thickness of the fourth clamping plate.

3. The hoisting apparatus of claim 2, wherein, The clamping mechanism further comprises a third clamping mechanism for simultaneously clamping each column of battery cells. The third clamping mechanism comprises two third clamping plates for simultaneously clamping each column of battery cells. At least one third clamping plate is provided with a third direct-acting driving mechanism for driving the third clamping plate to approach or move away from the battery cell group. The lowermost end of the third clamping plate is higher than the lowermost end of the fourth clamping plate.

4. Hoisting arrangement according to any of claims 1-3, characterized in that, The hoist-lift structure comprises at least three balancing members mounted on the lifting installation base body. Each balancing member is provided with a loaded lifting point for cooperating with the lifting appliance after the lifting device clamps the battery cell group and an unloaded lifting point for cooperating with the lifting appliance when the lifting device does not clamp the battery cell group.

5. A battery pack manufacturing system comprising a shaping device and a hoisting device for hoisting a shaped cell group, characterized by, The lifting device is the lifting device of claim 1.

6. The battery pack manufacturing system of claim 5, wherein, The shaping device comprises a support table for supporting the battery cell group and a second clamping mechanism for simultaneously clamping each column of battery cells. The lifting device comprises a fourth clamping mechanism for simultaneously clamping each column of battery cells. The second clamping mechanism comprises two second clamping plates for simultaneously clamping each column of battery cells. The two second clamping plates are respectively used for clamping the end plates at both ends of each column of battery cells. At least one second clamping plate is provided with a second direct-acting driving mechanism for driving the second clamping plate to approach or move away from the battery cell group. The fourth clamping mechanism comprises two fourth clamping plates for simultaneously clamping each column of battery cells. The two fourth clamping plates are respectively used for clamping the end plates at both ends of each column of battery cells. At least one fourth clamping plate is provided with a fourth direct-acting driving mechanism for driving the fourth clamping plate to approach or move away from the battery cell group.

7. The battery pack manufacturing system of claim 6, wherein, The lower end of each fourth clamping plate is provided with a guide plate for inserting into the battery box and guiding the end plate. The opposite surfaces of the two second clamping plates are each provided with a slot for inserting the guide plate.

8. The battery pack manufacturing system of claim 7, wherein, When clamping the end plate, the two guide plates are used to embed in the groove part on the end plate, so that the distance between the opposite surfaces of the two guide plates is equal to the distance between the two second clamping plates when all the clamping plates simultaneously clamp the battery cell group.

9. The battery pack manufacturing system of any one of claims 6-8, wherein, The upper end of each second clamping plate is provided with a protruding part for clamping the corresponding end plate and protruding upward. Each fourth clamping plate is provided with a corresponding avoiding slot.

10. The battery pack manufacturing system of any one of claims 5-8, wherein, The shaping device further comprises a first clamping mechanism for simultaneously clamping the rows of battery cells, and the hoisting device further comprises a third clamping mechanism for simultaneously clamping the rows of battery cells; the first clamping mechanism comprises two first clamping plates for simultaneously clamping the rows of battery cells, and at least one of the first clamping plates is provided with a first direct-acting driving mechanism for driving the first clamping plate to approach or move away from the group of battery cells; the third clamping mechanism comprises two third clamping plates for simultaneously clamping the rows of battery cells, and at least one of the third clamping plates is provided with a third direct-acting driving mechanism for driving the third clamping plate to approach or move away from the group of battery cells.

11. The battery pack manufacturing system of any one of claims 5-8, wherein, The hoisted structure comprises at least three balancing members mounted on the hoisting installation base body, each balancing member is provided with a loaded lifting point for cooperating with the lifting appliance after the hoisting device clamps the group of battery cells and an unloaded lifting point for cooperating with the lifting appliance when the hoisting device does not clamp the group of battery cells.

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