Limiting equipment for hoisting into box and battery cell assembling box system

Abstract

The utility model belongs to the field of manufacturing of batteries, and particularly relates to hoisting box-entering limiting equipment and a battery cell assembling box system. In order to improve the bonding strength between a battery cell group and a battery box, the utility model provides a limiting device for hoisting into a box. The hoisting in-box limiting equipment comprises a working table, a limiting structure used for limiting the hoisting equipment is further installed on the working table, the limiting structure comprises a limiting piece, and the limiting piece is provided with a limiting station used for being located over the hoisting equipment to limit the hoisting equipment and an avoiding station used for being located on the side of the hoisting equipment to avoid the hoisting equipment. The limiting piece is provided with a stopping face used for being in stopping fit with the hoisting equipment in the vertical direction when the limiting piece is located at the limiting station. The utility model further provides a battery cell assembling box system comprising the hoisting box-entering limiting equipment. After the hoisting equipment is limited, the pressure applied by the battery cell group to the glue is relatively large, and the glue can fully flow, so that the bonding strength between the battery cell group and the battery box is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the manufacturing field of battery, especially, relate to a lifting into the case limiting equipment and electric core assembly box system. BACKGROUND

[0002] The traditional battery pack (Pack) is mainly composed of "cell (Cell) - module (Module) - battery pack (Pack) " three-level structure, in order to reduce cost, the current new battery pack adopts CTP technology, CTP (Cell To Pack) technology is also called module-free technology.

[0003] For example, the Chinese utility model patent with the authorization announcement number CN215496972U and the authorization announcement date of 2022.01.11 discloses a kind of CTP battery, the CTP battery includes a row of cells and the end plate located at the both sides of the row of cells, end plate and cell are fixed together by strapping, at this time, recess groove extending left and right is equipped on the board surface of end plate away from cell, part of strapping is located in the recess groove, to limit the up and down position of strapping by recess groove.

[0004] In prior art, cell and end plate can also be bonded together by glue to form cell group (equivalent to the above-mentioned CTP battery), at this time, the board surface of end plate is plane.

[0005] When lifting the above-mentioned CTP battery into battery box, lifting equipment needs to be used, lifting equipment includes clamping plate for clamping CTP battery, after lifting clamping plate and CTP battery into battery box simultaneously, make clamping plate open to separate from CTP battery, then, make clamping plate exit battery box.

[0006] The following content is only used to make the person skilled in the art easy to understand the scheme, and does not represent that the following content is prior art:

[0007] When using the above-mentioned lifting equipment, since clamping plate needs to be opened in battery box, space for opening clamping plate needs to be reserved in battery box, which leads to larger volume of battery box, thereby leading to lower volumetric energy density of battery pack (including battery box and CTP battery).

[0008] In order to solve the above-mentioned problem, new lifting equipment includes lifting installation base body, lifting installation base body is provided with hoisting structure for cooperating with lifting appliance, clamping mechanism for clamping cell group and pushing mechanism for pushing down and pressing cell group clamped by clamping mechanism, pushing mechanism includes straight driving mechanism with output end moving along up and down direction, output end is provided with pushing surface for pushing cell group and extending into clamping space of clamping mechanism.

[0009] When the new hoisting device is used to hoist the battery cell group, the clamping mechanism is not opened, and the pushing mechanism pushes the battery cell group into the battery box, so that the volume of the battery box can be reduced, and the volume energy density of the battery pack can be improved.

[0010] However, during the manufacturing process of the battery pack, the staff will apply glue to the bottom of the battery box, and during the process of pushing the battery cell group downward by the pushing mechanism to make the battery cell group contact with the glue, when the pressure between the battery cell group and the glue rises to a certain degree, even if the output end of the direct drive mechanism continues to extend, the output end cannot move downward any more, and the hoisting installation base body will move upward under the action of the counterforce, so that the pressure applied by the battery cell group to the glue is small, the glue cannot flow sufficiently, and the bonding strength between the battery cell group and the battery box is poor. The utility model discloses a hoisting into box limiting equipment and a battery cell group packaging system.

[0011] The utility model discloses a hoisting into box limiting equipment and a battery cell group packaging system.

[0012] The utility model discloses a hoisting into box limiting equipment and a battery cell group packaging system.

[0013] To achieve the above object, the technical scheme of the hoisting into box limiting equipment provided by the utility model is as follows:

[0014] The utility model discloses a hoisting into box limiting equipment, which comprises a workbench surface for placing a battery box, and a limiting structure for limiting a hoisting device is also installed on the workbench surface, the limiting structure comprises a limiting piece, the limiting piece has a limiting station for being located above the hoisting device to limit the hoisting device and an avoiding station for being located on the side of the hoisting device to avoid the hoisting device, and the limiting piece has a stop surface for stopping cooperation with the hoisting device in the up-down direction when the limiting piece is in the limiting station.

[0015] Further, the limiting structure further comprises a hinged piece, one end of the hinged piece is connected with the workbench surface in a hinged mode, the limiting piece is arranged at the other end of the hinged piece, and the hinged axis of the hinged piece and the workbench surface is located in a horizontal plane, and the hinged piece can rotate around the hinged axis to switch the station of the limiting piece.

[0016] Further, the hinged piece is a hinged rod.

[0017] Further, the limiting structure further comprises a support and a direct drive mechanism, the support is installed on the workbench surface, the direct drive mechanism is installed on the support, and the limiting piece is installed on the output end of the direct drive mechanism to switch the station of the limiting piece by the direct drive mechanism.

[0018] Further, the limiting structure further comprises a rotating driving mechanism and a transmission member, one end of the transmission member is installed on the output end of the rotating driving mechanism, and the limiting member is installed on the other end of the transmission member, so as to switch the working position of the limiting member through the rotating driving mechanism.

[0019] Further, the limiting member is a limiting plate, and the lower plate surface of the limiting plate constitutes the stop surface.

[0020] Further, the limiting member has four groups, and the four groups of limiting members are respectively used for limiting cooperation with four corners of the hoisting equipment.

[0021] The hoisting and box limiting equipment has the following beneficial effects: the hoisting and box limiting equipment is an exploratory invention. When the hoisting and box limiting equipment is used, the following steps can be performed:

[0022] Step S1, the limiting member is switched to the avoiding working position;

[0023] Step S2, after the hoisting equipment is positioned, the limiting member is switched to the limiting working position;

[0024] Step S3, the hoisting equipment pushes the battery cell group downward, after the battery cell group contacts with the glue, the battery cell group exerts a reaction force on the hoisting equipment, under the action of the reaction force, the hoisting equipment moves upward, at this time, since the limiting member is in the limiting working position, the hoisting equipment is in stop cooperation with the stop surface in the up-down direction, so that the limiting of the hoisting equipment is realized. After the hoisting equipment is limited, since the hoisting equipment cannot continue to move upward, the pressure exerted by the battery cell group on the glue is large, the glue can fully flow, and the adhesion strength between the battery cell group and the battery box is improved.

[0025] In order to achieve the above purpose, the technical scheme of the battery cell assembling box system provided by the utility model is:

[0026] The electric core assembling box system comprises a hoisting device and a hoisting-into-box limiting device, the hoisting device comprises a hoisting mounting 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 the electric core group clamped by the clamping mechanism downwards are arranged on the hoisting mounting base body, the pushing mechanism comprises a direct-acting driving mechanism with an output end moving in the up-down direction, a pushing surface for pushing the electric core group into the clamping space of the clamping mechanism is arranged on the output end; the hoisting-into-box limiting device comprises a workbench surface for placing a battery box, a limiting structure for limiting the hoisting device is further arranged on the workbench surface, the limiting structure comprises a limiting piece, the limiting piece has a limiting station for being located above the hoisting device to limit the hoisting device and an avoiding station for being located on the side of the hoisting device to avoid the hoisting device, the limiting piece has a stop surface for stopping cooperation with the hoisting device in the up-down direction when the limiting piece is in the limiting station; a stop part for stopping cooperation with the limiting piece in the up-down direction is further arranged on the hoisting mounting base body.

[0027] Further, the limiting structure further comprises a hinged piece, one end of the hinged piece is connected with the workbench surface in a hinged manner, the limiting piece is arranged at the other end of the hinged piece, and the hinged axis of the hinged piece and the workbench surface is located in a horizontal plane, the hinged piece can rotate around the hinged axis to switch the station of the limiting piece.

[0028] Further, the hinged piece is a hinged rod.

[0029] Further, the limiting structure further comprises a support and a direct-acting driving mechanism, the support is arranged on the workbench surface, the direct-acting driving mechanism is arranged on the support, and the limiting piece is arranged on the output end of the direct-acting driving mechanism to switch the station of the limiting piece by the direct-acting driving mechanism.

[0030] Further, the limiting structure further comprises a rotary driving mechanism and a transmission piece, one end of the transmission piece is arranged on the output end of the rotary driving mechanism, and the limiting piece is arranged on the other end of the transmission piece to switch the station of the limiting piece by the rotary driving mechanism.

[0031] Further, the limiting piece is a limiting plate, and the lower plate surface of the limiting plate constitutes the stop surface.

[0032] Further, the limiting piece has four groups, and the four groups of limiting pieces are respectively used for limiting cooperation with four corners of the hoisting device.

[0033] Further, the upper surface of the hoisting mounting base body comprises a stop plane, and the stop plane constitutes the stop part.

[0034] The electric core assembling box system has the following beneficial effects: the electric core assembling box system is an exploratory invention. When the electric core assembling box system is used, the following steps can be performed:

[0035] Step S1, switching the limiting member to the avoidance position;

[0036] Step S2: After the hoisting equipment is in place, the limiter is switched to the limit position;

[0037] Step S3: The lifting device pushes the battery cell group downward. After the battery cell group contacts the glue, the battery cell group will exert a reaction force on the lifting device. Under the action of the reaction force, the lifting device moves upward. At this time, because the limiter is in the limit position, the lifting device will cooperate with the stop surface in the vertical direction to limit the lifting device. After the lifting device is limited, since the lifting device can no longer move upward, the battery cell group exerts a greater pressure on the glue, allowing the glue to flow fully, thereby improving the bonding strength between the battery cell group and the battery box.

[0038] During the entire process of packing the battery cells into the box, the clamping mechanism does not need to be opened, which can reduce the volume of the battery box and increase the volume energy density of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A schematic diagram of the structure of a battery pack produced by the battery cell assembly box system of the present invention;

[0040] Figure 2 for Figure 1 Schematic diagram of the structure before the battery cell assembly box;

[0041] Figure 3 This is a structural diagram of the lifting equipment, shaping equipment and lifting fixture used in conjunction with the battery cell assembly box system of the present invention;

[0042] Figure 4 for Figure 3 Schematic diagram of the structure of the shaping device when it does not clamp the battery cell group;

[0043] Figure 5 for Figure 3 Schematic diagram of the structure after the shaping equipment clamps the battery cell group;

[0044] Figure 6 for Figure 3 A structural diagram showing a perspective of the lifting equipment used to transport the battery pack;

[0045] Figure 7 for Figure 3 A structural diagram from another perspective of the lifting equipment transporting the battery cell group;

[0046] Figure 8 for Figure 3 A partial perspective diagram of the lifting equipment pushing the battery cell pack into the battery box.

[0047] Description of reference numerals:

[0048] 1, battery box; 2, battery cell group; 21, battery cell; 22, end plate; 221, end plate guide groove; 222, non-guided groove part; 3, shaping device; 31, support table; 32, first clamping plate; 321, first moving seat; 33, second clamping plate; 331, second moving seat; 332, insertion groove; 333, protruding part; 34, first fixed seat; 35, first lead screw; 36, second fixed seat; 37, second lead screw; 4, hoisting device; 41, pushing mechanism; 42, balancing piece; 43, full-load lifting ring; 44, empty-load lifting ring; 45, hoisting mounting frame; 46, third clamping mechanism; 461, third clamping plate; 47, fourth clamping mechanism; 471, fourth clamping plate; 48, avoiding groove; 49, guide plate; 5, lifting appliance; 6, articulated rod; 61, limiting piece; 7, support plate; 8, workbench. DETAILED DESCRIPTION

[0049] To solve the problems in the background art, the core inventive concept of the utility model is to use the limiting piece to limit the upward movement of the hoisting device, so that the battery cell group can exert sufficient pressure on the glue and make the glue flow fully, thereby improving the bonding strength between the battery cell group and the battery box.

[0050] The utility model will be further described in detail in combination with the embodiments.

[0051] The specific embodiments of the hoisting and boxing limiting device provided by the utility model are as follows:

[0052] On the basis of referring to Figures 1-7 , as shown in Figure 8 , the hoisting and boxing limiting device comprises a workbench 8 for placing the battery box 1, and a limiting structure for limiting the hoisting device 4 is also installed on the workbench 8, the limiting structure comprises a limiting piece 61, the limiting piece 61 has a limiting station for being located directly above the hoisting device 4 to limit the hoisting device 4 and an avoiding station for being located on the side of the hoisting device 4 to avoid the hoisting device 4, and the limiting piece 61 has a stop surface for stopping the hoisting device 4 in the up-down direction when the limiting piece 61 is in the limiting station.

[0053] When using the hoisting and boxing limiting device in the utility model, the following steps can be followed:

[0054] Step S1, switch the limiting piece 61 to the avoiding station;

[0055] Step S2, after the hoisting device 4 is in place, switch the limiting piece 61 to the limiting station;

[0056] Step S3, the hoisting device 4 pushes the battery cell group 2 downward, after the battery cell group 2 contacts with the glue, the battery cell group 2 will exert a reaction force on the hoisting device 4, under the action of the reaction force, the hoisting device 4 moves upward, at this time, since the limiting piece 61 is in the limiting position, the hoisting device 4 will be stopped in the upward and downward direction with the stop surface, so as to realize the limiting of the hoisting device 4. After the hoisting device 4 is limited, since the hoisting device 4 cannot continue to move upward, the pressure exerted by the battery cell group 2 on the glue is large, the glue can flow fully, thereby improving the bonding strength between the battery cell group 2 and the battery box 1.

[0057] In order to facilitate the understanding of those skilled in the art, the following gives several specific limiting structures:

[0058] In the first specific embodiment, the limiting structure further comprises a hinged piece, one end of the hinged piece is hingedly connected with the workbench surface 8, the limiting piece 61 is arranged at the other end of the hinged piece, and the hinged axis of the hinged piece and the workbench surface 8 is located in the horizontal plane, the hinged piece can rotate around the hinged axis to switch the position of the limiting piece 61. Preferably, the hinged piece is a hinged rod 6, which is simple in structure. Of course, the hinged piece can also be a hinged plate or the like structure.

[0059] In the first specific embodiment, the staff needs to manually rotate the hinged piece, thereby switching the position of the limiting piece 61.

[0060] In the second specific embodiment, the limiting structure further comprises a support and a direct-acting driving mechanism, the support is installed on the workbench surface 8, the direct-acting driving mechanism is installed on the support, and the limiting piece 61 is installed on the output end of the direct-acting driving mechanism, so as to switch the position of the limiting piece 61 by the direct-acting driving mechanism. The direct-acting driving mechanism can be a direct-acting hydraulic cylinder, a direct-acting pneumatic cylinder, a direct-acting electric cylinder or an electric telescopic rod, etc. At this time, the direct-acting driving mechanism can be used to drive the limiting piece 61 to switch the position.

[0061] In the third specific embodiment, the limiting structure further comprises a rotary driving mechanism and a transmission piece, one end of the transmission piece is installed on the output end of the rotary driving mechanism, and the limiting piece 61 is installed on the other end of the transmission piece, so as to switch the position of the limiting piece 61 by the rotary driving mechanism, the transmission piece can be a transmission rod or a transmission plate or the like structure, and the rotary driving mechanism can be a rotary pneumatic cylinder, a rotary electric cylinder or a stepping motor or the like rotary driving mechanism. At this time, the rotary driving mechanism can be used to drive the limiting piece 61 to switch the position.

[0062] In the second and third specific embodiments, the worker can remotely control the corresponding driving mechanism to act through a remote controller, so as to switch the working position of the limiting piece 61; or, a position sensor for detecting the position of the hoisting device 4 is arranged on the workbench 8, after the position sensor detects that the hoisting device 4 is in place, the position sensor sends a signal to the controller, and the controller controls the limiting piece 61 to switch to the limiting position, and after waiting for a set time (that is, after waiting for the hoisting device 4 to completely push out the battery cell group 2), the controller controls the limiting piece 61 to switch to the avoiding position.

[0063] In the various specific embodiments described above, preferably, the limiting piece 61 is a limiting plate, and the lower plate surface of the limiting plate constitutes the stop surface, which is simple in structure. Of course, the limiting piece 61 can also be a limiting column or a limiting block or the like structure.

[0064] In the utility model, the specific shape of the limiting piece 61 is not limited, as long as the limiting piece 61 has a stop surface for stopping cooperation with the hoisting device 4 in the up-down direction.

[0065] In the various specific embodiments described above, preferably, the limiting piece 61 has four groups, and the four groups of limiting pieces 61 are respectively used for limiting cooperation with the four corners of the hoisting device 4, so as to better limit the position of the hoisting device 4. Figure 8 In the various specific embodiments described above, preferably, the limiting piece 61 has four groups, and the four groups of limiting pieces 61 are respectively used for limiting cooperation with the four corners of the hoisting device 4, so as to better limit the position of the hoisting device 4.

[0066] In other specific embodiments, the limiting piece 61 can have one, two or more numbers. When the number of limiting pieces 61 is one, the limiting piece 61 can be a U-shaped limiting piece, at this time, the stop surface can stop cooperation with both sides of the hoisting device 4, so as to avoid the hoisting device 4 from tilting.

[0067] The specific embodiments of the battery cell assembling box system provided by the utility model are as follows:

[0068] As shown in Figures 1-8 , the battery cell assembling box system comprises a hoisting device 4 and a hoisting-into-box limiting device, and the specific structure of the hoisting-into-box limiting device is the same as that of any one of the specific structures of the hoisting-into-box limiting device in the specific embodiments of the utility model, and details are not repeated here.

[0069] The battery cell assembling box system (including the hoisting device 4 and the hoisting-into-box limiting device) is described in detail below by taking the case that the battery cell assembling box system is used in a battery pack manufacturing system (including a hoisting device 4, a shaping device 3 and a hoisting-into-box limiting device).

[0070] On the basis of referring to Figures 1-2 , as shown in Figures 3-8As shown, the hoisting device 4 comprises a hoisting installation base body, a hoisted structure for cooperating with the lifting appliance 5, a clamping mechanism for clamping the battery cell group 2, and a pushing mechanism 41 for pushing downward the battery cell group 2 clamped by the clamping mechanism, the pushing mechanism 41 comprising a direct-acting driving mechanism with an output end moving in the up-down direction, and a pushing surface on the output end extending into the clamping space of the clamping mechanism and used for pushing the battery cell group 2, and a stop portion on the hoisting installation base body for cooperating with the limiting piece 61 in the up-down direction.

[0071] Preferably, in a specific embodiment, the upper surface of the hoisting installation base body comprises a stop plane, which constitutes the stop portion, and the structure is simple.

[0072] In other specific embodiments, the stop portion can also be a stop cylinder, a stop block or the like structure installed on the hoisting installation base body.

[0073] In the utility model, the specific structure of the stop portion is not limited, as long as the stop portion can cooperate with the stop surface of the limiting piece 61 in the up-down direction to limit the upward movement of the hoisting installation base body (i.e. the hoisting device 4).

[0074] The direct-acting driving mechanism can be a linear motor, a hydraulic cylinder, an electric cylinder, a screw lifter or the like mechanism, the output end directly pushes on the battery cell group 2, and 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 battery cell group 2, and the pushing surface is the lower surface of the push plate.

[0075] In a specific embodiment, as shown, Figures 6-8 The hoisting installation base body is a hoisting installation rack 45, but in other specific embodiments, the hoisting installation base body can also be a hoisting installation plate, and compared with the hoisting installation plate, the hoisting installation rack 45 is lighter in weight, which can reduce the total weight of the hoisting device 4, thereby facilitating the hoisting of the hoisting device 4.

[0076] In a specific embodiment, the pushing mechanism 41 comprises a fixed seat installed on the hoisting installation base body and a lead screw extending in the up-down direction, a push plate is arranged below the fixed seat, a rotary power source is installed on the upper surface of the push plate, and 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.

[0077] In other specific embodiments, the pushing mechanism 41 comprises a push plate and a direct-acting power source, the output end of the direct-acting power source is in transmission connection with the push plate to drive the push plate to move up and down, and the direct-acting power source can be an electric push rod, an air cylinder, an electric cylinder or the like direct-acting power source.

[0078] When the battery cell group 2 is hoisted into the battery box, the lifting tool 5 is connected with the hoisted structure, the hoisting device 4 and the battery cell group 2 are hoisted simultaneously through the lifting tool 5, at this time, the clamping mechanism clamps the battery cell group 2, and the friction between the 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 clamping mechanism keeps 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 suffered by the battery cell group 2 and push the battery cell group 2 into the battery box 1.

[0079] In summary, the battery cell group 2 can be pushed into the battery box by the pushing mechanism 41 in the technical solution while the clamping mechanism still clamps the battery cell group 2, and the space required when the clamping mechanism is opened is not reserved in the box body, so that the volume of the battery box 1 can be reduced and the volume energy density of the battery pack can be improved on the premise that the volume of the battery cell group 2 is unchanged when the hoisting device 4 in the technical solution is used to manufacture the battery pack.

[0080] In the actual manufacturing process of the battery pack, it is necessary to decide whether to only shape the length direction of the battery cell group 2, only shape the width direction of the battery cell group 2, or shape the length direction and the width direction of the battery cell group 2 at the same time according to the actual working condition.

[0081] Referring to Figures 1-3 and 6-8, the hoisting device 4 is used in the battery pack manufacturing system, and the length direction and the width direction of the battery cell group 2 need to be shaped, and the hoisting device 4 is introduced in combination with the shaping device 3.

[0082] The shaping device 3 includes a support table 31 for supporting the battery cell group 2, a first clamping mechanism for clamping each row of battery cells 21 at the same time, and a second clamping mechanism for clamping each column of battery cells 21 at the same time; the lifting installation base is provided with a third clamping mechanism 46 for clamping each row of battery cells 21 at the same time and a fourth clamping mechanism 47 for clamping each column of battery cells 21 at the same time, and the third clamping mechanism 46 and the fourth clamping mechanism 47 jointly constitute the clamping mechanism.

[0083] 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 a set position, thereby directly shaping the battery cell group 2 to a specified size.

[0084] In the hoisting device 4, force sensors for monitoring the clamping forces of the third clamping mechanism 46 and the fourth clamping mechanism 47 on the battery cell group 2 can also be arranged, and the clamping of the battery cell group 2 by each clamping mechanism is determined by the clamping force; of course, each clamping mechanism can also be directly controlled to clamp the battery cell group 2, so that the maximum static friction force corresponding to the clamping force applied by each clamping mechanism is much greater than the weight of the battery cell group 2, so that the corresponding force sensor does not need to be arranged.

[0085] Preferably, the third clamping mechanism 46 and the fourth clamping mechanism 47 are used to clamp the battery cell group 2 still clamped by the shaping device 3. Each clamping mechanism (including four different clamping mechanisms) is used to clamp a different area 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.

[0086] Among them, the specific structure of each clamping mechanism is as follows:

[0087] 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.

[0088] As shown in Figures 3-8 The first direct drive mechanism includes a first fixed seat 34 fixed on the support table 31, a first lead screw 35 threadedly connected with the first fixed seat 34, and a first moving seat 321 guided and installed on the support table 31. By rotating the first lead screw 35, one first clamping plate 32 installed on the first moving seat 321 can be driven to move; 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, both first clamping plates 32 can be provided with a direct drive mechanism, 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, which will not be repeated here.

[0089] 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 used to clamp the end plates 22 at both ends of each column of battery cells 21. One of the second clamping plates 33 is provided with a second direct drive mechanism for driving the corresponding second clamping plate 33 to approach or move away from the battery cell group 2.

[0090] As shown in Figures 3-8As shown, the second direct drive mechanism includes 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 a second fixed seat 36, and another second clamping plate 33 is mounted on the second fixed seat 36. Of course, in other specific embodiments, the two second clamping plates 33 can also be configured with direct drive mechanisms, which will not be described here.

[0091] The first clamping mechanism and the second clamping mechanism are used to perform whole-row shaping and whole-column shaping on the battery cell group 2, 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, so as 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), and then the shaping device 3 can release the battery cell group 2.

[0092] As shown in Figures 6-8 The third clamping mechanism 46 includes two third clamping plates 461 for simultaneously clamping each row of battery cells 21, one of which is provided with a third direct drive mechanism for driving the corresponding third clamping plate 461 to approach or move away from the battery cell group 2. 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 to clamp the upper half and the lower half of the battery cell group 2, which is simple in structure.

[0093] At the same time, the fourth clamping mechanism 47 includes two fourth clamping plates 471 for simultaneously clamping each column of battery cells 21, and the two fourth clamping plates 471 are respectively used to clamp the end plates 22 at both ends of each column of battery cells 21, one of which is provided with a fourth direct drive mechanism for driving the corresponding fourth clamping plate 471 to approach or move 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.

[0094] The third direct driving mechanism and the fourth direct driving mechanism each comprise a fixed seat mounted on the hoisting installation base body, a screw rod threadedly matched with the fixed seat, and a movable seat movably matched with the hoisting installation base body along the extension direction of the corresponding screw rod, one third clamping plate 461 and one fourth clamping plate 471 are mounted on the corresponding movable seat, a rotary power source is fixedly mounted on each movable seat, the output end of the rotary power source is in transmission connection with the screw rod, and the other third clamping plate 461 and the other fourth clamping plate 471 are fixedly mounted 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 screw rod.

[0095] Of course, in other specific embodiments, referring to Figures 6-8 the two third clamping plates 461 can be each provided with the third direct driving mechanism, or the two fourth clamping plates 471 can be each provided with the fourth direct driving mechanism.

[0096] In the process of pushing the battery cell group 2 into the battery box 1 by using the hoisting device 4, the contact area between the battery cell group 1 and the clamping mechanism gradually decreases, when the contact area between the battery cell group 2 and the clamping mechanism is small, the battery cell group 2 is prone to swing in the process of moving downward, so that the battery cell group 2 cannot fall in the predetermined position, thereby causing the distance between the battery cell group 2 and the side wall of the battery box 1 to change, which is not conducive to the subsequent installation of other structures into the battery box 1.

[0097] In order to overcome the above problems, the battery cell group 2 and the hoisting device 4 are improved as follows in the utility model:

[0098] As shown in Figures 1-2 the battery cell group 2 comprises two end plates 22 and battery cells 21 clamped between the two end plates 22, the end plate 22 is provided with an end plate guide structure extending in the up-down direction on the plate surface away from the battery cell 21, the end plate guide structure is used for guiding and moving cooperation with the clamping guide structure in the clamping mechanism of the hoisting device 4 in the up-down direction, and the end plate guide structure extends to the upper end of the end plate 22.

[0099] Correspondingly, the hoisting device is also improved as follows: the clamping mechanism comprises a clamping guide structure, and the clamping guide structure is used for guiding and moving cooperation with the end plate guide structure extending to the upper end of the end plate 22 on the end plate 22 of the battery cell group 2 in the up-down direction.

[0100] In one specific embodiment, the end plate guide structure comprises an end plate guide groove 221 provided on the end plate 22, at this time, the corresponding clamping guide structure is a clamping guide protrusion, and the structure is simple.

[0101] In another specific embodiment, the end plate guide structure comprises an end plate guide protrusion provided on the end plate 22, at this time, the corresponding clamping guide structure is a clamping guide groove, and the structure is simple.

[0102] In yet another specific embodiment, the end plate guide structure comprises both the end plate guide groove 221 provided on the end plate 22 and the end plate guide protrusion, and the corresponding clamping guide structure comprises both the clamping guide protrusion and the clamping guide groove, so that the guiding effect is better.

[0103] In the utility model, the specific structure of the end plate guide structure and the clamping guide structure is not limited, as long as the end plate guide structure and the clamping guide structure can guide and move in the up-down direction after the clamping mechanism clamps the end plate 22.

[0104] In the process of hoisting the battery cell group 2 into the battery box 1, the battery cell group 2 clamped by the clamping mechanism is pushed into the battery box 1 by the pushing mechanism 41, and in the process of movement of the battery cell group 2, the end plate guide structure and the clamping guide structure guide and move in the up-down direction, and at the same time, since the end plate guide structure extends to the upper end of the end plate 22, the end plate guide structure and the clamping guide structure still guide and cooperate in the last period of downward movement of the battery cell group 2, so as to ensure that the battery cell group 22 falls in the predetermined position.

[0105] Preferably, the lower end of each fourth clamping plate 471 is provided with a guide plate 49 for insertion into the body of the battery box 1, the guide plate 49 is used for guiding and moving in the up-down direction with the end plate guide groove 221 on the end plate 22, and the guide plate 49 constitutes the clamping guide structure. At the same time, the guide plate 49 is used for insertion into the battery box 1 and guiding and moving with the inner wall of the battery box 1.

[0106] In one specific embodiment, if the arrangement direction of the two end plates 22 in the battery cell group 2 is defined as the front-rear direction, the thickness of the guide plate 49 in the front-rear direction is smaller than the thickness of the fourth clamping plate 471 in the front-rear direction, the fourth clamping plate 471 is thicker and has high structural strength, so as to ensure that the fourth clamping plate 471 will not be broken during the transfer of the battery cell group 2, and safety is ensured; the guide plate 49 inserted into the battery box 1 is thinner, which can further reduce the volume of the battery box 1 and improve the volume energy density of the battery pack.

[0107] Of course, in other specific embodiments, the thickness of the guide plate 49 can be the same as the thickness of the fourth clamping plate 471.

[0108] Preferably, the guide plates 49 are used to fit within the end plate guide grooves 221 on the end plate 22 when clamping the end plate 22, so that when all the clamping plates jointly clamp the battery cell group 2, the distance between the planes on which the opposite surfaces of the guide plates 49 located on the two fourth clamping plates 471 are equal to the distance between the two second clamping plates 33. That is, the thickness of the guide plates 49 is equal to the groove depth of the end plate guide grooves 221, and the guide plates 49 are completely embedded in the end plate guide grooves 221 of the end plate 22. In this case, the portion of the end plate 22 other than the end plate guide grooves 221 is defined as the non-guide groove portion 222, and the second clamping plates 33 are used to clamp the non-guide groove portion 222 of the end plate 22.

[0109] When the length of the battery cell group 2 is determined, the length dimension of the battery box 1 depends on the following conditions: (1) a set reserved gap needs to be reserved between the end plate 22 and the inner wall of the battery box 1; (2) a set reserved gap of at least the same as that in condition (1) needs to be reserved between the guide plate 49 and the inner wall of the battery box 1.

[0110] On the premise that the guide plate 49 is completely embedded in the end plate guide groove 221 of the end plate 22, when condition (1) is met, condition (2) is automatically met, 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 volume 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.

[0111] At this time, preferably, each second splint 33 is provided with a slot 332 for inserting the guide plate 49 on the plate surface opposite to the other second splint 33, and in the arrangement direction of the two second splints 33, the thickness of the slot 332 is greater than the thickness of the guide plate 49.

[0112] When lifting the battery cell group 2, first insert the guide plate 49 into the slot 332 (at this time, the fourth clamping plate 471 has not yet clamped the battery cell group 2), then clamp the battery cell group 2 with the fourth clamping plate 471 (at this time, the guide plate 49 leaves the slot 332 and moves into the end plate guide groove 221 of the end plate 22), and finally release the battery cell group 2 with the shaping device 3. During the process of inserting the guide plate 49 into the slot 332, the lifting device 4 slowly descends. The slot 332 and the guide plate 49 can be used to guide the lifting device 4, facilitating the downward movement of the lifting device 4 in the vertical direction, avoiding collision between the lifting device 4 and the battery cell group 2, and facilitating the lifting of the battery cell group 2.

[0113] However, in other specific embodiments, reference Figures 1-8 As shown, the slot 332 may not be provided, and the depth of the end plate guide groove 221 on the end plate 22 may be greater than the thickness of the guide plate 49, so that the guide plate 49 can be directly inserted into the end plate guide groove 221 during hoisting; or, the total depth of the slot 332 and the end plate guide groove 221 may be greater than the thickness of the guide plate 49.

[0114] In order to better perform the alignment shaping, as a specific embodiment, as shown in Figures 1-8 the upper end of each second clamping plate 33 is provided with a protruding part 333 for clamping the corresponding end plate 22 and protruding upward, and the fourth clamping plate 471 is provided with a corresponding avoiding slot 48, and the protruding part 333 can press the upper half of the battery cell group 2, so as to better shape the battery cell group 2. However, in other specific embodiments, the protruding part 333 can not be provided, 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 be performed.

[0115] When the pushing mechanism 41 pushes the battery cell group 2 downward, the battery box 1 and the fourth clamping plate 471 are in upward and downward direction stop cooperation (equivalent to the battery box 1 supporting the fourth clamping plate 471), so as to prevent the lifting device 4 from shaking, and at the same time, the support plate 7 is arranged between the third clamping plate 461 and the battery box 1, so that the battery box 1 indirectly supports the third clamping plate 461 in upward and downward direction stop cooperation (equivalent to the battery box 1 indirectly supporting the third clamping plate 461) through the support plate 7, so as to increase the area of the lifting assembly supported, reduce the pressure intensity of the fourth clamping plate 471, and avoid the deformation of the fourth clamping plate 471.

[0116] Since the center of gravity of the lifting device 4 when not clamping the battery cell group 2 and the center of gravity of the lifting device 4 after clamping the battery cell group 2 are not on the same vertical line, in order to facilitate repeated lifting of the lifting device 4, with reference to Figures 6-8 the hoisting structure includes at least three balancing parts 42 mounted on the lifting mounting base, each balancing part 42 is provided with a loaded lifting point for cooperating with the lifting appliance 5 after the lifting device 4 clamps the battery cell group 2, so as to keep the battery cell group 2 and the lifting device 4 in a horizontal state when the lifting appliance 5 lifts the lifting device 4 clamping the battery cell group 2, and each balancing part 42 is also provided with an unloaded lifting point for cooperating with the lifting appliance 5 when the lifting device 4 does not clamp the battery cell group 2, so as to keep the lifting device 4 in a horizontal state when the lifting appliance 5 lifts the lifting device 4 without clamping the battery cell group 2. By arranging 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 lifting device 4 clamping the battery cell group 2 and the lifting device 4 without clamping the battery cell group 2, facilitating repeated lifting of the lifting device 4. In Figure 6 the number of balancing parts 42 is four, but in other specific embodiments, the number of balancing parts 42 can also be three, five or more.

[0117] In the specific embodiment shown in Figures 6-8 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 point can also be composed of a lifting hole, a lifting hook or the like structure.

[0118] In other specific embodiments, with reference toFigures 6-8 The hoisting structure can also only include a set of hoisting points, which are composed of structures such as lifting rings, lifting holes, lifting hooks, etc. provided 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 the 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 position below 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 position below the first lifting device, and the hoisting device 4 can be lifted by using the first lifting device.

[0119] It needs to be specially pointed out that 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 on the cell group 2 cannot act on the vertical line where the gravity center of the cell group 2 is located, the cell group 2 will be subjected to a deviation and have a tendency to swing. By guiding the cell group 2 through the clamping guide structure, the cell group 2 can be prevented from swinging to ensure that the cell group 2 falls in the predetermined position.

[0120] It needs to be pointed out that in other specific embodiments, when the cell group only needs to be shaped in one direction, the shaping device 3 only includes the first clamping mechanism or the second clamping mechanism, and the hoisting device only includes the corresponding third clamping mechanism 46 or the fourth clamping mechanism 47.

[0121] In other specific embodiments, when the cell group 2 is shaped by using the shaping device 3, it is necessary to use glue to shape the cell group 2, then the shaping device 3 is loosened, and finally the hoisting device 4 hoists the cell group 2. At this time, the heights of the first clamping plate 32, the second clamping plate 33, the third clamping plate 461 and the fourth clamping plate 471 can all be greater than the height of the cell group 2.

[0122] Finally, it needs to be pointed out that the above is only a preferred embodiment of the present application and is not used to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments without creative labor, or equivalently replace some of the technical features, so as to combine the specific embodiments given in the Figures 1-8 of course, those skilled in the art can also combine the specific embodiments not given in the drawings of the remaining specification. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A lift into case limiting device, characterized by, The workbench surface includes a battery box placing workbench surface, and a limiting structure for limiting the hoisting equipment is also installed on the workbench surface, the limiting structure includes a limiting piece, the limiting piece has a limiting station for being located directly above the hoisting equipment to limit the hoisting equipment and an avoiding station for being located aside the hoisting equipment to avoid the hoisting equipment, and the limiting piece has a stop surface for stopping cooperation with the hoisting equipment in the up-down direction when the limiting piece is in the limiting station.

2. The lift-to-box limiting device of claim 1, wherein, The limiting structure further includes a hinged piece, one end of the hinged piece is hingedly connected with the workbench surface, the limiting piece is arranged at the other end of the hinged piece, and the hinged axis of the hinged piece and the workbench surface is located in the horizontal plane, and the hinged piece can rotate around the hinged axis to switch the station of the limiting piece.

3. The lift-to-box limiting device of claim 2, wherein, The hinged piece is a hinged rod.

4. The lift-to-box limiting device of claim 1, wherein, The limiting structure further includes a support and a direct-acting driving mechanism, the support is installed on the workbench surface, the direct-acting driving mechanism is installed on the support, and the limiting piece is installed on the output end of the direct-acting driving mechanism to switch the station of the limiting piece through the direct-acting driving mechanism.

5. The lift-to-box limiting device of claim 1, wherein, The limiting structure further includes a rotary driving mechanism and a transmission piece, one end of the transmission piece is installed on the output end of the rotary driving mechanism, and the limiting piece is installed on the other end of the transmission piece to switch the station of the limiting piece through the rotary driving mechanism.

6. The lift into case limiting device of any one of claims 1-5, wherein, The limiting piece is a limiting plate, and the lower plate surface of the limiting plate constitutes the stop surface.

7. The lift into case limiting device of any one of claims 1-5, wherein, The limiting piece has four groups, and the four groups of limiting pieces are respectively used for limiting cooperation with four corners of the hoisting equipment.

8. An electrode assembly case system characterized by comprising: The hoisting equipment includes a hoisting installation base body, a hoisted structure for cooperating with a hoist is arranged on the hoisting installation base body, a clamping mechanism for clamping a battery cell group and a pushing mechanism for pushing downward the battery cell group clamped by the clamping mechanism are arranged on the hoisting installation base body, the pushing mechanism includes a direct-acting driving mechanism with an output end moving in the up-down direction, a pushing surface for pushing the battery cell group is arranged on the output end and extends into the clamping space of the clamping mechanism, and a stop portion for stopping cooperation with the limiting piece in the up-down direction is further arranged on the hoisting installation base body.

9. The battery cell assembly box system of claim 8, wherein, The upper surface of the hoisting installation base body includes a stop plane, and the stop plane constitutes the stop portion.

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