Blade battery module stacking equipment

Abstract

The utility model relates to the technical field of battery module tooling, in particular to blade battery module stacking equipment, which comprises a variable pitch mechanism, a transfer mechanism, a pressure maintaining mechanism and a conveying mechanism, the variable pitch mechanism is arranged on a rack, the variable pitch mechanism comprises a first clamping part, and the first clamping part is used for clamping a battery cell to move in the direction perpendicular to the battery cell; adjusting a gap between adjacent battery cells; the transferring mechanism is arranged on the rack, comprises a second clamping part and is used for clamping and stacking the battery cells on the module tray after the gaps are adjusted; the pressure maintaining mechanism is used for carrying out pressure maintaining on the battery cells stacked on the module tray; and the conveying mechanism is used for conveying and bearing the module tray after the battery cell is subjected to pressure maintaining. The equipment can accurately control the gaps of the battery cells and complete the stacking of the battery modules with the gap value being less than 1mm.

Description

Technical Field

[0001] The utility model relates to the technical field of battery module tooling, in particular to blade battery module stacking equipment. Background Art

[0002] With the development of society, the demand for electric vehicles is also increasing, and people are paying more and more attention to lithium-ion batteries in electric vehicles. As a hot product in the market, the blade battery series battery pack has received more and more attention. The market pursues high-energy density battery packs. One of the routes is to load more battery cells in the same battery pack volume to increase energy density. This requires that the gap between battery cells becomes smaller and controllable under the premise of meeting the thermal cycle. The current module battery pack production line requires such an automatic stacking equipment that can meet the requirements of automatic production.

[0003] At present, the product structure of blade battery modules has designed the gap between cells to be 0.4mm-0.8mm, and some types of products have eliminated the insulating material between cells. There is a gap between cells, so there is no grouping force. This requires the equipment to be able to stably control the gap between cells. However, the current industry cell stacking equipment cannot control the cell gap to be stable at a gap value less than or equal to 1mm. Utility Model Content

[0004] The utility model provides a blade battery module stacking device, which is used to solve the problem in the prior art that the battery cell stacking device cannot stably control the battery cell gap value.

[0005] The utility model provides a blade battery module stacking device, comprising:

[0006] The pitch-changing mechanism is arranged on the frame and comprises a first clamping portion, which is used to adjust the gap between adjacent battery cells by clamping the battery cells and moving in a direction perpendicular to the battery cells;

[0007] The transfer mechanism is arranged on the frame and includes a second clamping portion for clamping the battery cells after the gap is adjusted and stacked on the module tray;

[0008] A pressure-maintaining mechanism, used to maintain the pressure of the cells stacked on the module tray;

[0009] The conveying mechanism is used to convey the module tray after the battery cells are pressurized.

[0010] In some specific embodiments, the pressure maintaining mechanism includes:

[0011] A first pressure-maintaining component is disposed on the frame and is used to maintain pressure on the cells stacked on the module tray;

[0012] The second pressure-maintaining component is arranged on the module tray and is used for performing a second pressure-maintaining on the battery cells on the module tray after the first pressure-maintaining.

[0013] In some specific embodiments, the variable distance mechanism also includes a positioning platform and a positioning part, and the positioning part can move along the height direction of the positioning platform to above the positioning platform to calibrate the position of the battery cell on the positioning platform, or move along the height direction of the positioning platform to below the positioning platform to separate from the battery cell.

[0014] In some specific embodiments, the pitch-changing mechanism further includes a third pressure-maintaining component, which can move along the height direction of the positioning platform body and be pressed on the upper top surface of the battery cell after the pitch is changed.

[0015] In some specific embodiments, the third pressure-maintaining assembly includes a first pressing plate and a second pressing plate, wherein the first pressing plate can be moved along the height direction of the positioning platform body and pressed on the upper top surface of one of the battery cells after the pitch is changed, and the second pressing plate can be moved along the height direction of the positioning platform body and pressed on the upper top surface of the other battery cells after the pitch is changed;

[0016] And / or, the third pressure-maintaining assembly can move along the length direction of the positioning platform to above the battery cell after the distance is changed.

[0017] In some specific embodiments, each first pressure-maintaining assembly is respectively movable along the height direction of the module tray body, and is sequentially pressed on the upper top surface of the corresponding battery cell transferred to the module tray;

[0018] And / or, the second pressure-maintaining assembly can move along the width direction of the module tray and be pressed on two opposite sides of all the battery cells on the module tray.

[0019] In some specific embodiments, the first pressure maintaining component includes:

[0020] A first pressure-maintaining portion, the lower end surface of which can be pressed against the upper top surface of the battery cell;

[0021] A first guide portion is arranged along the height direction of the module tray body and is slidably connected to the first pressure-maintaining portion;

[0022] The first linear driver is connected to the first pressure-maintaining portion and is used for driving the first pressure-maintaining portion to move along the first guide portion.

[0023] And / or, the second pressure maintaining component includes:

[0024] The second pressure-maintaining parts are symmetrically arranged on two opposite sides of the module tray, and the inner side surfaces of the two second pressure-maintaining parts can be pressed on two opposite sides of the battery cell respectively;

[0025] The second guide portion is arranged along the width direction of the module tray body and is slidably connected with the second pressure-maintaining portion;

[0026] The locking unit is used to limit the second pressure-maintaining part after the second pressure-maintaining part is pressed on the opposite sides of the battery core.

[0027] In some specific embodiments, the locking unit includes:

[0028] A column is mounted on the module tray, and the second pressure-maintaining portion can slide along the column;

[0029] A limiting column is installed at the lower end of the second pressure-maintaining part and can be inserted into the limiting groove on the module tray to limit the second pressure-maintaining part;

[0030] The return spring is sleeved on the column, with the upper end abutting against the module tray and the lower end abutting against the second pressure-maintaining part. The return spring has the elastic force to make the limiting column snap downward into the limiting groove.

[0031] In some specific embodiments, an unlocking drive unit is also included, which can drive the second pressure maintaining component to move along the height direction of the module tray body so that the locking unit releases the limit on the second pressure maintaining part; the unlocking drive unit can also be connected to the second pressure maintaining part to drive the second pressure maintaining part to move along the second guide part.

[0032] In some specific embodiments, a lifting and positioning mechanism is further included, and the lifting and positioning mechanism is arranged below the conveying mechanism, and the lifting and positioning mechanism includes:

[0033] A fixed plate, on which a guide sleeve is vertically arranged;

[0034] A sliding plate is arranged above the fixed plate and is slidably connected to the fixed plate, and a wedge-shaped guide block is arranged at the upper end of the sliding plate;

[0035] The lifting plate is arranged parallel to the sliding plate. A positioning pin matching the positioning pin hole on the module tray is arranged at the upper end of the lifting plate. A guide column and a guide wheel are installed at the lower end of the lifting plate. The outer wall of the guide column is slidably connected with the inner wall of the guide sleeve. The guide wheel is in rolling contact with the inclined surface of the wedge-shaped guide block.

[0036] The second linear drive is installed on the fixed plate. The second linear drive can drive the sliding plate to slide horizontally, so that the guide wheel rolls on the inclined surface of the wedge-shaped guide block, so that the lifting plate can be lifted and lowered.

[0037] The beneficial effects of the utility model are as follows:

[0038] The blade battery module stacking device of the utility model enables the first clamping part to drive the corresponding battery cells to move in a direction perpendicular to the battery cells. Since the first clamping part can flexibly adjust the gap value between adjacent battery cells, the gap value between adjacent battery cells can be better controlled within 1 mm, thereby ensuring the stability and safety of the blade battery module stacking device. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0040] Figure 1 This is a schematic diagram of the overall structure of the blade battery module stacking device of the present invention;

[0041] Figure 2 It is a structural schematic diagram of the pitch-changing mechanism of the utility model;

[0042] Figure 3 It is a structural schematic diagram of the transfer mechanism of the utility model;

[0043] Figure 4 is a schematic structural diagram of the second clamping portion;

[0044] Figure 5 is a structural schematic diagram of a first pressure-maintaining component;

[0045] Figure 6 It is a structural schematic diagram of the module tray;

[0046] Figure 7 is a schematic diagram of the structure of the unlocking drive unit;

[0047] Figure 8 It is a structural schematic diagram of the jacking and positioning mechanism;

[0048] Reference numerals:

[0049] 100-variable distance mechanism, 110-first clamping part, 120-positioning platform, 130-positioning part, 140-third pressure-maintaining component, 141-first pressure plate, 142-second pressure plate, 150-transmission rod, 160-screw, 200-transfer mechanism, 210-second clamping part, 300-first pressure-maintaining component, 310-first pressure-maintaining part, 320-first guide part, 321-guide ring, 322-guide shaft, 330-first linear drive, 400-second pressure-maintaining component, 410-second pressure-maintaining part, 420-second guide part, 430-locking unit, 431 -column, 432-limiting column, 433-reset spring, 440-unlocking drive unit, 441-moving seat, 442-fixed seat, 443-locking pin, 444-fourth linear drive, 445-third linear drive, 500-lifting positioning mechanism, 510-fixed plate, 520-sliding plate, 530-lifting plate, 540-guide sleeve, 550-guide column, 560-guide wheel, 570-wedge guide block, 581-locating pin, 582-locating pin hole, 590-second linear drive, 600-module tray, 700-rack, 800-battery cell. DETAILED DESCRIPTION

[0050] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0051] This embodiment provides a blade battery module stacking device, such as Figure 1As shown, the apparatus comprises a distance-changing mechanism 100, a transfer mechanism 200, a first pressure-maintaining assembly 300, a second pressure-maintaining assembly 400 and a conveying mechanism, wherein the distance-changing mechanism 100, the transfer mechanism 200, the first pressure-maintaining assembly 300 and the conveying mechanism are all arranged on a frame 700, and the second pressure-maintaining assembly 400 is arranged on a module tray 600. After the distance-changing mechanism 100 changes the distance, the battery cells 800 form a group of battery cells 800 with a certain gap. The transfer mechanism 200 sequentially transfers the group of battery cells 800 that have completed the distance change to the module tray 600. Each time a group of battery cells 800 is transferred, the corresponding first pressure-maintaining component 300 will maintain pressure on the group of battery cells 800 once, until all the group of battery cells 800 constituting the battery module are transferred to the module tray 600 and all are maintained pressure once, and then the second pressure-maintaining component 400 performs secondary pressure maintenance on all battery cells 800, and after the secondary pressure maintenance is completed, the primary pressure maintenance of the first pressure-maintaining component 300 is released. At this time, the relative positions of all battery cells 800 on the module tray 600 and the module tray 600 are limited, and no partial displacement of the battery cells 800 will occur. Finally, the module tray 600 carrying the battery cells 800 is transferred to the next station by the conveying mechanism.

[0052] Specifically, the distance-changing mechanism 100 includes at least one first clamping portion 110, each of which can clamp a battery cell 800, and each of which can move in a direction perpendicular to the battery cell 800 to adjust the gap between two adjacent battery cells 800. The transfer mechanism 200 includes a second clamping portion 210, which is used to clamp the battery cell 800 after the distance change and transfer it to the module tray 600. There is at least one first pressure-maintaining component 300, and each first pressure-maintaining component 300 can respectively perform a pressure-maintaining operation on the corresponding battery cell 800 transferred to the module tray 600. The second pressure-maintaining component 400 is arranged on the module tray 600, and can perform a second pressure-maintaining operation on all battery cells 800 on the module tray 600 after the first pressure-maintaining operation. The conveying mechanism is used to convey the module tray 600.

[0053] It can be understood that by making each first clamping part 110 drive the corresponding battery cell 800 to move in a direction perpendicular to the battery cell 800, the gap between two adjacent battery cells 800 is accurately controlled to meet the battery module stacking requirements of leaving a gap between the battery cells 800 and the gap value being less than 1mm, thereby completing the distance change of the same group of battery cells 800. The first pressure-maintaining component 300 can timely maintain pressure on a group of battery cells 800 that have just been transferred to the module tray 600, which can prevent the battery cells 800 of other groups that have been transferred to the stacking tray from shifting during the stacking process. The second pressure-maintaining component 400 simultaneously performs a second pressure maintenance on all battery cells 800 on the module tray 600 after the first pressure maintenance, effectively preventing the battery cells 800 from shifting during the movement of the stacking tray.

[0054] In this embodiment, Figure 2 As shown, each battery cell 800 is respectively clamped by two mutually symmetrical first clamping parts 110, and the lower ends of the two symmetrical first clamping parts 110 are commonly connected with a transmission rod 150, and each transmission rod 150 is threadedly connected to a screw 160, and the screw 160 is arranged in a direction perpendicular to the battery cell 800. Each screw 160 is respectively connected to a servo motor, and the servo motor is used to drive the corresponding screw 160 to rotate, thereby driving each transmission rod 150 to move in a direction perpendicular to the battery cell 800, that is, driving each battery cell 800 to move in a direction perpendicular to the battery cell 800, so that the gap between the battery cells 800 can be accurately adjusted to the target value.

[0055] In this embodiment, the clamping position of the second clamping portion 210 can be flexibly set. For example, in this embodiment, there are four cells 800 that complete the pitch change at the same time. Figure 4 As shown, the second clamping portion 210 is provided with four clamping positions, which can clamp four variable pitch battery cells 800 at a time.

[0056] In this embodiment, the conveying mechanism may adopt rack and pinion conveying or belt conveying to convey the module tray 600 .

[0057] In some specific embodiments, Figure 2 As shown, the variable pitch mechanism 100 also includes a positioning platform 120 and a positioning portion 130. The positioning portion 130 can move along the height direction of the positioning platform 120 to above the positioning platform 120 to calibrate the position of the battery cell 800 on the positioning platform 120, or move along the height direction of the positioning platform 120 to below the positioning platform 120 to separate from the battery cell 800.

[0058] Specifically, in this embodiment, the positioning part 130 is arranged on the positioning frame, the position of the positioning part 130 is pre-adjusted by the XY manual slide, and the positioning frame is driven by the servo motor to move along the height direction of the positioning platform 120. The upper end of the positioning part 130 has a slot that is consistent with the thickness of the battery cell 800, and the position of the slot is the standard preset position of the battery cell 800. The upper end of the slot expands outwards to both sides, which can guide the battery cell 800 to fall into the slot, thereby ensuring that the initial position of the chip of the positioning platform 120 to be changed is the standard preset position, avoiding deviation of the battery cell 800.

[0059] In some specific embodiments, Figure 2 As shown, the pitch-changing mechanism 100 further includes a third pressure-maintaining component 140 , which can move along the height direction of the positioning platform 120 and be pressed on the upper top surface of the battery cell 800 after the pitch is changed.

[0060] It can be understood that when the battery cell 800 completes the distance change, the third pressure maintaining component 140 is pressed on the upper top surface of the battery cell 800 after the distance change to limit the battery cell 800. At this time, the first clamping part 110 can release the battery cell 800, thereby ensuring that the battery cell 800 will not shift during the process of being clamped by the second clamping part 210.

[0061] In some specific embodiments, the third pressure maintaining assembly 140 includes a first pressure plate 141 and a second pressure plate 142. The first pressure plate 141 can move along the height direction of the positioning platform 120 and be pressed on the upper top surface of one of the battery cells 800. The second pressure plate 142 can move along the height direction of the positioning platform 120 and be pressed on the upper top surface of other battery cells 800 after the distance is changed.

[0062] It should be noted that one battery cell 800 can be used as a reference battery cell 800, and the other battery cells 800 are all close to the reference battery cell 800 to complete the distance change of the battery cell 800, thereby saving a set of first clamping parts 110. In this embodiment, a battery cell 800 at the end is used as the reference battery cell 800, and the first pressing plate 141 moves along the body height direction of the positioning platform 120 and is pressed on the upper top surface of the reference battery cell 800. The other battery cells 800 are clamped by the first clamping part 110 and approach the reference battery cell 800. After the other battery cells 800 complete the distance change, the second pressing plate 142 moves along the body height direction of the positioning platform 120 and is pressed on the upper top surface of the other battery cells 800 after the distance change. Among them, the first pressing plate 141 and the second pressing plate 142 are driven by corresponding electric push rods respectively.

[0063] In other embodiments, the third pressure-maintaining component 140 can also move along the length direction of the positioning platform 120 to the top of the battery cell 800 after the distance change. In this way, the third pressure-maintaining component 140 does not occupy the space above the battery cell 800. When the battery cell 800 is placed on the positioning platform 120, the third pressure-maintaining component 140 is located at one end of the battery cell 800 and does not affect the operation of the manipulator. When the distance change of the battery cell 800 is completed, the third pressure-maintaining component 140 moves to the top of the battery cell 800 after the distance change to perform the pressure-maintaining action.

[0064] In some specific embodiments, Figure 1 , Figure 2 , Figure 5 As shown, each first pressure-maintaining assembly 300 can move along the height direction of the module tray 600, and is sequentially pressed on the upper top surface of the corresponding battery cell 800 transferred to the module tray 600, and the corresponding battery cell 800 transferred to the module tray 600 is pressure-maintained. Figure 1 , Figure 6As shown, the second pressure-maintaining component 400 can move along the width direction of the module tray 600, and is pressed on the opposite sides of all the battery cells 800 on the module tray 600. The corresponding battery cells 800 transferred to the module tray 600 are subjected to secondary pressure maintenance. After the second pressure-maintaining component 400 completes the secondary pressure maintenance of the battery cells 800, the first pressure-maintaining component 300 releases the primary pressure maintenance of the battery cells 800, and at this time, the battery cells 800 are firmly limited on the module tray 600 by the first pressure-maintaining component 300.

[0065] In some specific embodiments, Figure 5 As shown, the first pressure-maintaining assembly 300 includes a first pressure-maintaining part 310, a first guide part 320 and a first linear driver 330. The lower end surface of the first pressure-maintaining part 310 can be pressed against the upper top surface of the battery cell 800. The first guide part 320 is arranged along the height direction of the module tray 600 and is slidably connected with the first pressure-maintaining part 310. The first linear driver 330 is connected with the first pressure-maintaining part 310 and is used to drive the first pressure-maintaining part 310 to move along the first guide part 320. The axis of the first linear driver 330 is arranged along the height direction of the module tray 600. The first linear driver 330 can be an electric push rod, a cylinder, a hydraulic cylinder or a servo electric cylinder.

[0066] Specifically, the first pressure-maintaining part 310 is plate-shaped, and the first guide part 320 includes a guide ring 321 and a guide shaft 322 arranged along the height direction of the module tray 600. The inner wall of the guide ring 321 is in sliding contact with the outer wall of the guide shaft 322. Driven by the first linear drive 330, the guide shaft 322 slides along the inner wall of the guide ring 321, so that the lower end surface of the first pressure-maintaining part 310 is pressed against the upper top surface of the battery cell 800.

[0067] The second pressure-maintaining assembly 400 includes a second pressure-maintaining portion 410, a second guide portion 420 and a locking unit 430. There are two second pressure-maintaining portions 410, which are symmetrically arranged on opposite sides of the module tray 600. The inner sides of the two second pressure-maintaining portions 410 can be pressed on opposite sides of the battery cell 800. The second guide portion 420 is arranged along the width direction of the module tray 600 and is slidably connected to the second pressure-maintaining portion 410. The locking unit 430 is used to limit the second pressure-maintaining portion 410 after the second pressure-maintaining portion 410 is pressed on opposite sides of the battery cell 800.

[0068] Specifically, the second guide portion 420 is a guide rail arranged along the width direction of the module tray 600, and is respectively arranged at the opposite ends of the module tray 600. The two ends of the second pressure maintaining portion 410 are respectively slidably matched with the second guide portion 420. The second pressure maintaining portion 410 can move along the second guide portion 420 so that the inner side surfaces of the second guide portion 420 are respectively pressed on the opposite sides of the battery cell 800.

[0069] It is understandable that by providing the locking unit 430 , after the second pressure-maintaining portion 410 is pressed on opposite sides of the battery cell 800 , the second pressure-maintaining portion 410 can be automatically limited to prevent the battery cell 800 on the module tray 600 from shifting.

[0070] In some specific embodiments, Figure 6 As shown, the locking unit 430 includes a column 431, a limiting column 432 and a return spring 433. The column 431 is installed on the module tray 600, and the second pressure-maintaining part 410 can slide along the column 431. The limiting column 432 is installed at the lower end of the second pressure-maintaining part 410, and can be inserted into the limiting groove on the module tray 600 to limit the second pressure-maintaining part 410. The return spring 433 is sleeved on the column 431, with the upper end abutting against the module tray 600 and the lower end abutting against the second pressure-maintaining part 410. The return spring 433 has an elastic force that causes the limiting column 432 to be inserted downward into the limiting groove.

[0071] Specifically, a through hole is formed on the second pressure-maintaining part 410, and the second pressure-maintaining part 410 is movably sleeved on the pillar 431, and the second pressure-maintaining part 410 can slide up and down along the pillar 431. After the second pressure-maintaining part 410 is pressed against the opposite sides of the battery cell 800, the second pressure-maintaining part 410 can be driven to slide downward under the elastic force of the return spring 433, and the limiting pillar 432 is inserted into the limiting groove, so that the second pressure-maintaining part 410 is pressed against the opposite sides of the battery cell 800. Of course, the position and number of the limiting grooves can be flexibly set according to the width of the battery cell 800.

[0072] It can be understood that, by providing the locking unit 430 , the second pressure-maintaining portion 410 can be automatically locked after the second pressure-maintaining portion 410 is pressed against two opposite sides of the battery cell 800 .

[0073] In some specific embodiments, Figure 7 As shown, it also includes an unlocking drive unit 440, which can drive the second pressure-maintaining component 400 to move along the height direction of the module tray 600 so that the locking unit 430 releases the limit on the second pressure-maintaining part 410; the unlocking drive unit 440 can also be connected to the second pressure-maintaining part 410 to drive the second pressure-maintaining part 410 to move along the second guide part 420.

[0074] Specifically, the unlocking drive unit 440 includes a moving seat 441, a fixed seat 442 and a locking pin 443, and the locking pin 443 cooperates with the locking pin 443 hole on the second pressure-maintaining part 410. The moving seat 441 is slidably mounted on the fixed seat 442, and a fourth linear driver 444 is provided on the fixed seat 442. Driven by the fourth linear driver 444, the moving seat 441 can move along the width direction of the module tray 600. A third linear driver 445 is installed on the moving seat 441. Driven by the third linear driver 445, the locking pin 443 moves up and is inserted into the locking pin 443 hole on the second pressure-maintaining part 410, and the second pressure-maintaining part 410 continues to be lifted up. The second pressure-maintaining part 410 overcomes the elastic force of the reset spring 433 and slides up along the column 431. At this time, the limiting column 432 is disengaged from the limiting groove, and the battery cell 800 is released from the pressure-maintaining. In this embodiment, the fourth linear drive 444 and the third linear drive 445 can be electric push rods, air cylinders, hydraulic cylinders, or servo electric cylinders.

[0075] In some specific embodiments, Figure 8 As shown, it also includes a lifting and positioning mechanism 500, which is arranged below the conveying mechanism. The lifting and positioning mechanism 500 can lift the module tray 600 to separate the module tray 600 from the conveying mechanism, and accurately position the module tray 600.

[0076] It is understandable that in the process of transferring the battery cells 800 to the module tray 600, the stability of the module tray 600 needs to be maintained. The module tray 600 can be lifted by the lifting and positioning mechanism 500 to separate the module tray 600 from the conveying mechanism to prevent the module tray 600 from shifting on the conveying mechanism.

[0077] In some specific embodiments, Figure 8 As shown, the lifting and positioning mechanism 500 includes a fixed plate 510, a sliding plate 520, a lifting plate 530 and a second linear drive 590. A guide sleeve 540 is vertically arranged on the fixed plate 510. The sliding plate 520 is arranged above the fixed plate 510 and is slidably connected to the fixed plate 510. A wedge-shaped guide block 570 is arranged on the sliding plate 520. The lifting plate 530 is arranged above the sliding plate 520. A positioning pin 581 is arranged on the upper end of the lifting plate 530. The positioning pin 581 matches the positioning pin hole 582 on the back of the module tray 600. A guide column 550 and a guide wheel 560 are installed on the lower end of the lifting plate 530. The outer wall of the guide column 550 is slidably connected to the inner wall of the guide sleeve 540, and the guide wheel 560 is in rolling contact with the inclined surface of the wedge-shaped guide block 570. The second linear driver 590 is installed on the fixed plate 510 . The second linear driver 590 can drive the sliding plate 520 to slide horizontally, so that the guide wheel 560 rolls on the inclined surface of the wedge-shaped guide block 570 , so that the lifting plate 530 can be lifted and lowered.

[0078] It is understandable that when the second linear drive 590 drives the sliding plate 520 to slide horizontally, the guide wheel 560 rolls on the inclined surface of the wedge-shaped guide block 570, thereby driving the guide column 550 to slide up and down along the inner wall of the guide sleeve 540, so that the lifting plate 530 is lifted up and down. When the lifting plate 530 rises, it will lift the module tray 600, so that the module tray 600 is separated from the conveying mechanism. When the lifting plate 530 falls, the module tray 600 will fall onto the conveying mechanism again. By setting a positioning pin 581 at the upper end of the lifting plate 530, when the lifting plate 530 lifts the module tray 600, the positioning pin 581 and the positioning pin hole 582 on the back of the module tray 600 are engaged with each other, so as to achieve precise positioning of the module tray 600.

[0079] The workflow of this embodiment is as follows:

[0080] After the battery cells 800 are changed in pitch on the positioning platform 120, a group of battery cells 800 with a certain gap is formed; the second clamping part 210 sequentially transfers the group of battery cells 800 that have completed the change in pitch to the module tray 600; each time a group of battery cells 800 is transferred, the corresponding first pressure-maintaining part 310 presses the upper top surface of the group of battery cells 800 until all the battery cells 800 constituting the battery module are transferred to the module tray 600, the second pressure-maintaining part 410 presses the opposite ends of all the battery cells 800, and then the first pressure-maintaining part 310 moves up and separates from the battery cells 800. At this time, the relative positions of all battery cells 800 on the module tray 600 and the module tray 600 are limited, and no local battery cells 800 will be displaced. Finally, the module tray 600 carrying the battery cells 800 is transferred to the next station by the conveying mechanism.

[0081] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0082] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0083] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0084] In the present utility model, the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the described specific features, structures, materials or characteristics may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0085] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A blade battery module stacking device, characterized in that: include: The pitch-changing mechanism is arranged on the frame and comprises a first clamping portion, which is used to adjust the gap between adjacent battery cells by clamping the battery cells and moving in a direction perpendicular to the battery cells; A transfer mechanism, arranged on the frame, comprises a second clamping portion, used for clamping the battery cells after gap adjustment and stacking them on a module tray; A pressure-maintaining mechanism, used to maintain the pressure of the cells stacked on the module tray; The conveying mechanism is used to convey the module tray after carrying the battery cells for pressure maintenance.

2. The blade battery module stacking device according to claim 1, characterized in that: The pressure maintaining mechanism comprises: A first pressure-maintaining component, disposed on the frame, for maintaining pressure on the cells stacked on the module tray; The second pressure-maintaining component is arranged on the module tray and is used for performing a second pressure-maintaining on the battery cells on the module tray after the first pressure-maintaining.

3. The blade battery module stacking device according to claim 2, characterized in that: The variable pitch mechanism also includes a positioning platform and a positioning part, wherein the positioning part can move along the height direction of the positioning platform to above the positioning platform to calibrate the position of the battery cell on the positioning platform, or move along the height direction of the positioning platform to below the positioning platform to separate from the battery cell.

4. The blade battery module stacking device according to claim 3, characterized in that: The pitch-changing mechanism further comprises a third pressure-maintaining component, which can move along the height direction of the positioning platform body and be pressed on the upper top surface of the battery cell after the pitch is changed.

5. The blade battery module stacking device according to claim 4, characterized in that: The third pressure-maintaining assembly includes a first pressing plate and a second pressing plate, wherein the first pressing plate can move along the height direction of the positioning platform body and be pressed on the upper top surface of one of the battery cells, and the second pressing plate can move along the height direction of the positioning platform body and be pressed on the upper top surfaces of other battery cells after the distance is changed; And / or, the third pressure-maintaining assembly can move along the length direction of the positioning platform to above the battery cell after the distance is changed.

6. The blade battery module stacking device according to any one of claims 2 to 5, characterized in that: Each of the first pressure-maintaining components is respectively movable along the height direction of the module tray, and is sequentially pressed on the upper top surface of the corresponding battery cell transferred to the module tray; And / or, the second pressure-maintaining assembly can move along the width direction of the module tray body and be pressed on two opposite sides of all the battery cells on the module tray.

7. The blade battery module stacking device according to claim 6, characterized in that: The first pressure maintaining component comprises: A first pressure-maintaining portion, wherein the lower end surface of the first pressure-maintaining portion can be pressed against the upper top surface of the battery cell; A first guide portion, arranged along the height direction of the module tray body and slidably connected to the first pressure-maintaining portion; a first linear driver, connected to the first pressure-maintaining portion, and configured to drive the first pressure-maintaining portion to move along the first guide portion; And / or, the second pressure maintaining component includes: Second pressure-maintaining parts are symmetrically arranged on two opposite sides of the module tray, and the inner side surfaces of the two second pressure-maintaining parts can be pressed on two opposite sides of the battery cell respectively; A second guide portion is arranged along the width direction of the module tray body and is slidably connected to the second pressure-maintaining portion; The locking unit is used to limit the second pressure-maintaining part after the second pressure-maintaining part is pressed on the opposite sides of the battery core.

8. The blade battery module stacking device according to claim 7, characterized in that: The locking unit comprises: A column mounted on the module tray, and the second pressure-maintaining portion can slide along the column; A limiting column, installed at the lower end of the second pressure-maintaining part, capable of being inserted into a limiting groove on the module tray to limit the second pressure-maintaining part; A return spring is sleeved on the column, with an upper end abutting against the module tray and a lower end abutting against the second pressure-maintaining portion. The return spring has an elastic force that causes the limiting column to be clamped downward into the limiting groove.

9. The blade battery module stacking device according to claim 8, characterized in that: It also includes an unlocking drive unit, which can drive the second pressure-maintaining component to move along the height direction of the module tray body so that the locking unit releases the limit on the second pressure-maintaining part; the unlocking drive unit can also be connected to the second pressure-maintaining part to drive the second pressure-maintaining part to move along the second guide part.

10. The blade battery module stacking device according to claim 9, characterized in that: It also includes a lifting and positioning mechanism, which is arranged below the conveying mechanism and includes: A fixed plate, on which a guide sleeve is vertically arranged; A sliding plate is arranged parallel to and above the fixed plate and is slidably connected to the fixed plate, and a wedge-shaped guide block is arranged on the upper end of the sliding plate; A lifting plate is arranged parallel to the sliding plate, a positioning pin matching the positioning pin hole on the module tray is arranged at the upper end of the lifting plate, a guide column and a guide wheel are installed at the lower end of the lifting plate, the outer wall of the guide column is slidably connected with the inner wall of the guide sleeve, and the guide wheel is in rolling contact with the inclined surface of the wedge-shaped guide block; The second linear drive is installed on the fixed plate. The second linear drive can drive the sliding plate to slide horizontally, so that the guide wheel rolls on the inclined surface of the wedge-shaped guide block, so that the lifting plate can be lifted and lowered.

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