Battery cell fixing device

Abstract

The utility model relates to a battery cell fixing device. The battery cell fixing device comprises a base; the fixing assembly is rotatably arranged on the base, the fixing assembly comprises a shell, a first cover body and a second cover body, the shell, the first cover body and the second cover body jointly define a containing cavity, the first cover body is rotatably connected with the shell, the second cover body is rotatably connected with the first cover body, the first cover body and the second cover body can be connected with the shell in a clamped mode, and the containing cavity is formed by the shell, the first cover body and the second cover body. The accommodating cavity is used for accommodating a battery cell, the first cover body is opposite to the large surface of the battery cell, the second cover body is opposite to the end surface of the battery cell for mounting a tab, and an avoiding groove is formed in the second cover body and is used for avoiding the tab of the battery cell; the power assembly is in transmission connection with the fixing assembly so as to drive the fixing assembly to rotate. According to the battery cell fixing device disclosed by the invention, automatic direction switching is realized, manual position changing is not needed, the battery cell is accurately positioned, the battery cell is easy to disassemble and assemble after being welded, and the production efficiency and the product quality are greatly improved.

Description

Technical Field

[0001] The present application relates to the technical field of battery cell positioning, and in particular to a battery cell fixing device. Background Art

[0002] The existing welding process is to manually place the lithium battery cell horizontally into the fixture, then cover it with a cover plate, and then tighten the screws at both ends of the cover plate, and then put the fixture vertically, and then manually press the number of pole ears on the upper end of the lithium battery cell to both sides of the fixture evenly, and then install the guide bar, and then fold the two equally divided pole ears onto the guide bar, and then install the aluminum welding sheet to the corresponding position, install the pressure plate in place, and then tighten the screws at both ends of the pressure block, and then switch the fixture to the other side, manually press the number of pole ears on the upper end of the lithium battery cell to both sides of the fixture evenly, and then install the guide bar, and then fold the two equally divided pole ears Fold it onto the guide bar, install the aluminum welding sheet, install the pressure plate, and then tighten the screws at both ends of the pressure block, then move the fixture with the lithium battery installed to the welding platform, then position and fix the fixture, and then start the laser welding machine for automatic welding, swap the welded fixture to the other side, and then position the fixture, and then start the laser welding machine for automatic welding, then take out the welded fixture and put it on the workbench, then loosen the pressure plate screws on both sides to remove the pressure plate, then loosen the fixture cover screws to remove the cover, and then take out the lithium battery (the welding of the pole ears at both ends of a lithium battery has been completed), and repeat this cycle. The main disadvantages are as follows:

[0003] 1) The labor intensity is high, and the lithium battery cell cannot be separated from the fixture during operation, which makes it too heavy to be handled;

[0004] 2) Assembly is laborious, time-consuming and inefficient, screw fixation is not conducive to disassembly and assembly, and one battery cell needs to be welded twice;

[0005] 3) Waste of manpower: welding a lithium battery tab requires 4 people (2 for clamping and 2 for welding);

[0006] 4) Low assembly accuracy often leads to lithium battery cell tab welding deviation, cold welding and welding through. In many cases, manual re-positioning is required by referring to the CCD with the hand pulse. Utility Model Content

[0007] The present application provides a battery cell fixing device to solve the problem of poor welding positioning accuracy and low efficiency between the battery cell tab and the guide bar.

[0008] The battery cell fixing device according to the present application includes:

[0009] Base;

[0010] A fixing assembly, the fixing assembly is rotatably arranged on the base, the fixing assembly comprises a shell, a first cover body and a second cover body, the shell, the first cover body and the second cover body jointly define a receiving cavity, the first cover body is rotatably connected to the shell, the second cover body is rotatably connected to the first cover body, the first cover body and the second cover body can be snap-fitted with the shell, the receiving cavity is used to accommodate a battery cell, the first cover body is opposite to a large surface of the battery cell, the second cover body is opposite to an end surface of a mounting pole ear of the battery cell, and an avoidance groove is provided on the second cover body, the avoidance groove is used to avoid the pole ear of the battery cell;

[0011] A power assembly is transmission-connected with the fixed assembly to drive the fixed assembly to rotate.

[0012] The battery cell fixing device according to the present application further includes a clutch assembly, which can connect or disconnect the power assembly and the fixing assembly in a transmission manner.

[0013] Optionally, the power assembly includes a transmission flange, the clutch assembly includes a fixed frame, a clutch flange is provided on the fixed frame, a first rotating shaft is provided on the shell, the clutch flange is sleeved outside the first rotating shaft and can move along the first rotating shaft, a mating key is provided on the first rotating shaft, a mating groove is provided on the clutch flange, the mating key is clamped in the mating groove, and the clutch flange can be connected or disengaged from the transmission flange.

[0014] Optionally, a rotatable connecting frame is provided on the fixing frame, the clutch flange is provided on the connecting frame, a rotatable handle is provided on the clutch flange, a bracket is provided on the side of the connecting frame, a snap-fitting groove is defined on the bracket, and the handle can be embedded in the snap-fitting groove.

[0015] According to the battery cell fixing device of the present application, a first rotating shaft and a second rotating shaft relative to each other are provided on the shell, a first supporting frame and a second supporting frame are provided on the base, the first rotating shaft can be rotatably clamped on the first supporting frame, the second rotating shaft can be rotatably clamped on the second supporting frame, a limiting plate is provided on the second rotating shaft, at least one limiting hole is provided on the limiting plate, and a blocking rod is provided on the second supporting frame, and the blocking rod can extend into or out of the limiting hole.

[0016] Optionally, a cylinder is provided on the second support frame, and a piston of the cylinder is connected to the blocking rod.

[0017] Optionally, a baffle is provided on the first rotating shaft, and a photoelectric sensor is provided on the first supporting frame, and a detection end of the photoelectric sensor is used to sense the baffle.

[0018] According to the battery cell fixing device of the present application, a locking piece is provided on the shell, and when the second cover is closed on the shell, the locking piece can be rotated to a position to press against the second cover or avoid the second cover.

[0019] Optionally, a first magnetic member is provided on a side of the second cover body away from the accommodating cavity, a second magnetic member is provided on a side of the first cover body away from the accommodating cavity, and the second cover body can be rotated to a position where the first magnetic member and the second magnetic member are adsorbed.

[0020] According to the battery cell fixing device of the present application, a locking assembly is provided on the shell, and the locking assembly includes a locking piece. When the first cover body is closed on the shell, the locking piece can be rotated to a position to press against the first cover body or avoid the first cover body.

[0021] Optionally, the first cover body and the shell jointly define a locking groove, and the shell is also provided with a receiving groove, the locking groove and the receiving groove are connected, the locking assembly includes a rocker arm and the locking member, the rocker arm is rotatably connected to the shell, the locking member is rotatably connected to the rocker arm, the rocker arm can be rotated into the receiving groove or the locking groove, and the rotating axis of the locking member is eccentrically arranged.

[0022] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0023] The battery cell fixing device provided in the embodiment of the present application can, when assembling the battery cell, place the battery cell into the shell, and make the first cover body engage with the shell to fix the battery cell. At this time, the second cover body is not covered, and the bus and the pole ear are installed on the side end surface of the battery cell, and the second cover body is snapped and engaged with the shell to achieve the clamping and positioning of the pole ear and the bus bar. After that, the battery cell can be welded by using welding equipment. In this process, the power component can be used to drive the fixing component to rotate to a suitable orientation to match the clamping of the battery cell, the clamping of the bus bar and the pole ear, and the orientation required for welding, thereby realizing automatic conversion of orientation without manual position change, and accurately positioning the battery cell, and easy disassembly and assembly after welding, which greatly improves production efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings herein are incorporated in and constitute a part of the specification, illustrate embodiments consistent with the present utility model, and together with the description, are used to explain the principles of the present utility model.

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0026] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0027] Figure 1 A three-dimensional diagram of a battery cell fixing device provided in an embodiment of the present application;

[0028] Figure 2 A three-dimensional diagram of a fixing assembly of a battery cell fixing device provided in an embodiment of the present application;

[0029] Figure 3 A three-dimensional diagram of a shell of a battery cell fixing device provided in an embodiment of the present application;

[0030] Figure 4 A three-dimensional diagram of a first cover of a battery cell fixing device provided in an embodiment of the present application;

[0031] Figure 5 A three-dimensional diagram of a second cover of a battery cell fixing device provided in an embodiment of the present application;

[0032] Figure 6 A three-dimensional diagram of a clutch assembly of a battery cell fixing device provided in an embodiment of the present application;

[0033] Figure 7 A three-dimensional diagram of a power assembly of a battery cell fixing device provided in an embodiment of the present application;

[0034] Figure 8 A three-dimensional diagram of a first support frame of a battery cell fixing device provided in an embodiment of the present application;

[0035] Fig. 9 A three-dimensional diagram of a second support frame of a battery cell fixing device provided in an embodiment of the present application;

[0036] Fig.10 A three-dimensional diagram of a locking assembly of a battery cell fixing device provided in an embodiment of the present application.

[0037] Description of reference numerals:

[0038] Battery cell fixing device 1,

[0039] Base 10, first support frame 11, photoelectric sensor 111, second support frame 12,

[0040] The fixing assembly 20, the housing 21, the first rotating shaft 211, the blocking piece 2111, the matching key 212, the limiting plate 214, the limiting hole 215, the locking member 216, the first cover 22, the second magnetic member 221, the handle 222, the second cover 23, the avoidance groove 231, the locking groove 26, the receiving groove 27,

[0041] Power assembly 30, transmission flange 31, first clamping groove 311, first clamping portion 312, motor 32,

[0042] Clutch assembly 40, fixing frame 41, clutch flange 42, connecting frame 43, handle 44, bracket 45, engaging groove 451, cylinder 50,

[0043] The locking assembly 60 , the locking member 61 , the rotating shaft 611 , and the swing rod 62 . DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0045] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0046] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0047] like Figure 1-Figure 5 As shown, the battery cell fixing device 1 according to the embodiment of the present application includes: a base 10 , a fixing assembly 20 and a power assembly 30 .

[0048] Specifically, the fixing component 20 is rotatably disposed on the base 10, and the fixing component 20 includes a shell 21, a first cover body 22 and a second cover body 23. The shell 21, the first cover body 22 and the second cover body 23 jointly define a accommodating cavity. The first cover body 22 is rotatably connected to the shell 21, and the second cover body 23 is rotatably connected to the first cover body 22. The first cover body 22 and the second cover body 23 can be snapped into the shell 21, and the accommodating cavity is used to accommodate the battery cell. The first cover body 22 is opposite to the large surface of the battery cell, and the second cover body 23 is opposite to the end surface of the mounting pole ear of the battery cell. The second cover body 23 is provided with an avoidance groove 231, and the avoidance groove 231 is used to avoid the pole ear of the battery cell; the power component 30 is transmission-connected to the fixing component 20 to drive the fixing component 20 to rotate.

[0049] To elaborate, when assembling the battery cell, the battery cell can be placed in the shell 21, and the first cover 22 can be snapped into the shell 21 to fix the battery cell. At this time, the second cover 23 is not covered. The bus and the pole ear are installed on the side end surface of the battery cell, and the second cover 23 is snapped into the shell 21 to achieve the clamping and positioning of the pole ear and the bus. The pole ear is inserted into the avoidance groove 231. Thereafter, the battery cell can be welded using welding equipment. In this process, the power component 30 can be used to drive the fixing component 20 to rotate to a suitable position to match the clamping of the battery cell, the clamping of the bus and the pole ear, and the position required for welding, thereby achieving automatic position conversion.

[0050] The power assembly 30 generally includes a motor 32 and a transmission structure. In some embodiments, the power assembly 30 includes a driving cylinder and a transmission structure, and the driving cylinder, the transmission structure and the fixing assembly 20 are connected in sequence.

[0051] In addition, in some embodiments, a second cover 23 is provided at one end of the shell 21. In some embodiments, a second cover 23 is provided at both ends of the shell 21 to adapt to the structure in which pole ears are provided at both ends of the battery cell.

[0052] The battery cell fixing device 1 provided in the embodiment of the present application utilizes the clamping connection between the first cover body 22 and the shell 21 as well as the clamping connection between the second cover body 23 and the shell 21 to realize quick assembly and disassembly of the battery cell, and utilizes the power component 30 to control the fixing component 20 to automatically switch to the position required for the process, without the need for manual position change, and accurately positions the battery cell, making it easy to assemble and disassemble after welding, thereby greatly improving production efficiency and product quality.

[0053] like Figure 4 As shown, in a specific embodiment, a handle 222 is provided on the first cover body 22, and the handle 222 can be used to conveniently open the first cover body 22.

[0054] like Figure 1 and Figure 6 As shown, the battery cell fixing device 1 according to the embodiment of the present application further includes a clutch assembly 40 , and the clutch assembly 40 can connect or disconnect the power assembly 30 and the fixing assembly 20 in transmission.

[0055] That is to say, in some processes, the clutch assembly 40 can be used to connect the power assembly 30 to the fixed assembly 20 in a transmission manner. In this way, the power assembly 30 can provide power for the rotation of the fixed assembly 20, thereby realizing the automatic rotation of the fixed assembly 20. At the same time, the angle of rotation of the fixed assembly 20 controlled by the power assembly 30 can be precisely controlled, thereby improving the alignment accuracy of the battery cell and the welding equipment, thereby achieving the purpose of improving product quality. When clamping the battery cell or the busbar or the tab, the clutch assembly 40 is used to disconnect the power assembly 30 from the fixed assembly 20, thereby realizing manual rotation of the fixed assembly 20 to the angle required for clamping, thereby improving the convenience of operation. In this way, the clutch assembly 40 can meet various operating procedures in the battery cell welding positioning process.

[0056] like Figure 1 , Figure 6 , Figure 7 as well as Figure 8As shown, in some embodiments, the power assembly 30 includes a transmission flange 31, the clutch assembly 40 includes a fixing frame 41, a clutch flange 42 is provided on the fixing frame 41, a first rotating shaft 211 is provided on the shell 21, the clutch flange 42 is sleeved outside the first rotating shaft 211 and can move along the first rotating shaft 211, a mating key 212 is provided on the first rotating shaft 211, a mating groove is provided on the clutch flange 42, the mating key 212 is clamped in the mating groove, and the clutch flange 42 can be connected or disengaged with the transmission flange 31.

[0057] In detail, the power assembly 30 includes a transmission flange 31, and the clutch assembly 40 includes a fixing frame 41, on which a clutch flange 42 is provided, and on the housing 21, a first rotating shaft 211 is provided, and the clutch flange 42 is sleeved outside the first rotating shaft 211 and can move along the first rotating shaft 211, so that the clutch flange 42 can be moved to be engaged with the transmission flange 31 or spaced from the transmission flange 31, and after the clutch flange 42 is engaged with the transmission flange 31, due to the engagement of the mating groove and the mating key 212 of the clutch flange 42, the rotation of the transmission flange 31 drives the clutch flange 42 to rotate, and then the rotation of the clutch flange 42 drives the first rotating shaft 211 to rotate, thereby driving the fixed assembly 20 to rotate. After the clutch flange 42 is disengaged from the transmission flange 31, the rotation of the transmission flange 31 will not drive the clutch flange 42 to rotate, and then will not drive the fixed assembly 20 to rotate, thereby disengaging the power assembly 30 from the fixed assembly 20.

[0058] like Figure 6 and Figure 7 As shown, in a specific embodiment, a plurality of first clamping grooves 311 and first clamping portions 312 are provided on the transmission flange 31, and the first clamping grooves 311 and the first clamping portions 312 are alternately arranged in sequence, and a plurality of second clamping grooves and second clamping portions are provided on the clutch flange 42, and the second clamping grooves and the second clamping portions are alternately arranged in sequence. When the clutch flange 42 and the transmission flange 31 are clamped, the first clamping portion 312 is clamped in the second clamping groove, and the second clamping portion is clamped in the first clamping groove 311.

[0059] like Figure 1 and Figure 6 As shown, in some embodiments, a rotatable connecting frame 43 is provided on the fixing frame 41, a clutch flange 42 is provided on the connecting frame 43, a rotatable handle 44 is provided on the clutch flange 42, a bracket 45 is provided on the side of the connecting frame 43, a snap-fitting groove 451 is defined on the bracket 45, and the handle 44 can be embedded in the snap-fitting groove 451.

[0060] In detail, the fixing frame 41 is provided with a rotatable connecting frame 43, and the connecting frame 43 is provided with a clutch flange 42, so that the clutch flange 42 can rotate with the rotation axis 611 line of the connecting frame 43 as the rotation axis 611 line, which can limit the clutch flange 42 so that it can move according to a predetermined moving trajectory, and the clutch flange 42 is provided with a rotatable handle 44, which is used for the user to grasp and manually operate the clutch flange 42. In order to prevent the clutch flange 42 from being disengaged from the transmission flange 31 by accident, the engaging groove 451 is used to limit the handle 44. When the handle 44 needs to be operated, since the handle 44 is rotatable, it is lifted upward to disengage the engaging groove 451, and then the handle 44 is pushed to the left or right to operate.

[0061] like Figure 1 , Figure 8 as well as Fig. 9 As shown, according to the battery cell fixing device 1 of the embodiment of the present application, a first rotating shaft 211 and a second rotating shaft relative to each other are provided on the shell 21, a first supporting frame 11 and a second supporting frame 12 are provided on the base 10, the first rotating shaft 211 is rotatably clamped on the first supporting frame 11, the second rotating shaft is rotatably clamped on the second supporting frame 12, a limiting plate 214 is provided on the second rotating shaft, at least one limiting hole 215 is provided on the limiting plate 214, and a blocking rod is provided on the second supporting frame 12, and the blocking rod can extend into or out of the limiting hole 215.

[0062] Specifically, the shell 21 is provided with a first rotating shaft 211 and a second rotating shaft relative to each other, the base 10 is provided with a first supporting frame 11 and a second supporting frame 12, the first rotating shaft 211 is rotatably clamped on the first supporting frame 11, and the second rotating shaft is rotatably clamped on the second supporting frame 12, the first supporting frame 11 and the second supporting frame 12 respectively support the first rotating shaft 211 and the second rotating shaft, thereby realizing the support of the fixing component 20, so that the shell 21 can rotate with the first supporting frame 11 and the second supporting frame 12 as the fulcrum, and the second rotating shaft is provided with a limit plate 2 14, at least one limiting hole 215 is provided on the limiting plate 214. When the second rotating shaft rotates, the limiting plate 214 will be driven to rotate. A movable blocking rod is provided on the second support frame 12. When the blocking rod extends into one of the limiting holes 215, the limiting plate 214 is limited by the blocking rod. If the second rotating shaft has a tendency to rotate, the limiting effect of the blocking rod on the limiting plate 214 will prevent the second rotating shaft from rotating. Thus, the cooperation of the blocking rod and the limiting plate 214 can limit the second rotating shaft, and further limit the rotation of the fixing assembly 20, which is convenient for users to clamp and position. When the second rotating shaft needs to move, the blocking rod is controlled to extend out of the limiting hole 215, thereby releasing the limiting effect on the limiting plate 214.

[0063] The number of the limiting holes 215 can be set as required, for example, two, three, or four. In a specific embodiment, the number of the limiting holes 215 is three.

[0064] like Fig. 9 As shown, in some embodiments, a cylinder 50 is provided on the second support frame 12, and a piston of the cylinder 50 is connected to the blocking rod.

[0065] It is understandable that, by arranging the piston of the cylinder 50 to be connected with the stop rod, the cylinder 50 can be used to automatically drive the stop rod to extend into the limiting hole 215 or extend out of the limiting hole 215, thereby realizing automation.

[0066] like Figure 1 and Figure 8 As shown, in some embodiments, a blocking piece 2111 is disposed on the first rotating shaft 211 , and a photoelectric sensor 111 is disposed on the first supporting frame 11 , and a detection end of the photoelectric sensor 111 is used to sense the blocking piece 2111 .

[0067] Specifically, a photoelectric sensor 111 is provided on the first support frame 11. When the baffle 2111 is in the first position, the detection end of the photoelectric sensor 111 can detect the baffle 2111 to determine that the shell 21 is in the set position. When the baffle 2111 is rotated to other positions, the detection end of the photoelectric sensor 111 cannot sense the baffle 2111. At this time, the system will believe that the shell 21 is not in the set position, thereby judging whether the shell 21 is returned to its position or whether it is in the initial position.

[0068] like Figure 1-Figure 3 As shown, according to the battery cell fixing device 1 of the embodiment of the present application, a locking member 216 is provided on the shell 21 , and when the second cover 23 is covered on the shell 21 , the locking member 216 can be rotated to a position to press against the second cover 23 or avoid the second cover 23 .

[0069] Specifically, a locking piece 216 is provided on the shell body 21. When the second cover body 23 is closed on the shell body 21, the locking piece 216 is rotated to press the second cover body 23, thereby realizing the positioning and limiting of the second cover body 23 and preventing the second cover body 23 from opening automatically. When the second cover body 23 needs to be opened, the locking piece 216 is rotated to a position to avoid the second cover body 23, so that the second cover body 23 can be opened. In this way, the locking piece 216 can be used to achieve quick disassembly and assembly, thereby improving the efficiency of disassembly and assembly.

[0070] like Figure 1 , Figure 2 as well as Figure 4As shown, in some embodiments, a first magnetic component is provided on the side of the second cover body 23 facing away from the accommodating cavity, and a second magnetic component 221 is provided on the side of the first cover body 22 facing away from the accommodating cavity. The second cover body 23 can be rotated to a position where the first magnetic component and the second magnetic component 221 are adsorbed.

[0071] In detail, after the second cover 23 is flipped open, it rotates until the first magnetic member and the second magnetic member 221 are adsorbed. At this time, the first adsorbent and the second adsorbent are adsorbed to fix the second cover 23 there. When the bus or the tab is clamped on the battery cell, the second cover 23 will not be accidentally touched and rotated and damaged, thereby improving the safety of the operation, and further improving the operating efficiency and the yield rate of finished products.

[0072] At least one of the first magnetic member and the second magnetic member 221 is a strong magnet, for example, both the first magnetic member and the second magnetic member 221 are strong magnets. It is understandable that the second cover 23 itself can be made of a material that can be attracted by a magnet, so that the first magnetic member can be understood as the second cover itself.

[0073] like Figure 1 and Fig.10 As shown, according to the battery cell fixing device 1 of the embodiment of the present application, a locking assembly 60 is provided on the shell 21, and the locking assembly 60 includes a locking member 61. When the first cover body 22 is covered on the shell 21, the locking member 61 can be rotated to a position to press against the first cover body 22 or avoid the first cover body 22.

[0074] When the first cover 22 is covered on the housing 21, the lock 61 can be rotated to a position that presses against the first cover 22 or avoids the first cover 22. Specifically, when the battery cell needs to be fixed, the battery cell is placed in the housing 21, the first cover 22 is covered on the housing 21, and the lock 61 is rotated to press against the first cover 22, thereby locking the first cover 22 on the housing 21, and playing a role in fixing the battery cell. When the first cover 22 needs to be opened, the lock 61 is rotated to a position that avoids the first cover 22, so that the cover can be opened. The lock 61 can be used to achieve quick disassembly and quick assembly, thereby improving the efficiency of positioning and clamping the battery cell.

[0075] like Figure 3 , Figure 4 as well as Fig.10 As shown, in some embodiments, the first cover body 22 and the shell body 21 jointly define a locking groove 26, and a receiving groove 27 is also provided on the shell body 21, the locking groove 26 and the receiving groove 27 are connected, and the locking assembly 60 includes a rocker arm 62 and a locking member 61, the rocker arm 62 is rotatably connected to the shell body 21, and the locking member 61 is rotatably connected to the rocker arm 62, the rocker arm 62 can be rotated to the receiving groove 27 or the locking groove 26, and the rotating shaft 611 of the locking member 61 is eccentrically set.

[0076] In detail, the rocker arm 62 is rotatably connected to the shell body 21, and the rocker arm 62 is similar to the radius of an arc, and the locking member 61 is rotatably connected to the rocker arm 62, which means that the locking member 61 can rotate with the rocker arm 62, and can also rotate on its own. When it is necessary to lock the first cover body 22, the rocker arm 62 swings and moves from the receiving groove 27 into the locking groove 26, and the rocker arm 62 can limit the first cover body 22. At this time, the locking member 61 is rotated again to press the locking member 61 against the first cover body 22, and the rotating shaft 611 of the locking member 61 is eccentrically arranged, so that when the locking member 61 is pressed against the first cover body 22, the first cover body 22 can be pressed, and the pressing force can be adaptively adjusted according to the thickness of the battery cell to avoid being too tight or too loose.

[0077] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0078] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0079] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features applied herein.

Claims

1. A battery cell fixing device, characterized in that: include: Base; A fixing assembly, the fixing assembly is rotatably arranged on the base, the fixing assembly comprises a shell, a first cover body and a second cover body, the shell, the first cover body and the second cover body jointly define a receiving cavity, the first cover body is rotatably connected to the shell, the second cover body is rotatably connected to the first cover body, the first cover body and the second cover body can be snap-fitted with the shell, the receiving cavity is used to accommodate a battery cell, the first cover body is opposite to a large surface of the battery cell, the second cover body is opposite to an end surface of a mounting pole ear of the battery cell, and an avoidance groove is provided on the second cover body, the avoidance groove is used to avoid the pole ear of the battery cell; A power assembly is transmission-connected with the fixed assembly to drive the fixed assembly to rotate.

2. The battery cell fixing device according to claim 1, characterized in that: It also includes a clutch component, which can connect or disconnect the power component with the fixed component in a transmission manner.

3. The battery cell fixing device according to claim 2, characterized in that: The power assembly includes a transmission flange, and the clutch assembly includes a fixing frame, a clutch flange is provided on the fixing frame, a first rotating shaft is provided on the shell, the clutch flange is sleeved outside the first rotating shaft and can move along the first rotating shaft, a mating key is provided on the first rotating shaft, a mating groove is provided on the clutch flange, the mating key is clamped in the mating groove, and the clutch flange can be connected to or disengaged from the transmission flange.

4. The battery cell fixing device according to claim 3, characterized in that: The fixing frame is provided with a rotatable connecting frame, the connecting frame is provided with the clutch flange, the clutch flange is provided with a rotatable handle, a bracket is provided on the side of the connecting frame, a clamping groove is defined on the bracket, and the handle can be embedded in the clamping groove.

5. The battery cell fixing device according to claim 1, characterized in that: The shell is provided with a first and a second rotating shaft relative to each other, the base is provided with a first supporting frame and a second supporting frame, the first rotating shaft is rotatably clamped on the first supporting frame, the second rotating shaft is rotatably clamped on the second supporting frame, the second rotating shaft is provided with a limiting plate, the limiting plate is provided with at least one limiting hole, the second supporting frame is provided with a blocking rod, and the blocking rod can extend into or out of the limiting hole.

6. The battery cell fixing device according to claim 5, characterized in that: The second support frame is provided with a cylinder, and the piston of the cylinder is connected to the blocking rod.

7. The battery cell fixing device according to claim 5 or 6, characterized in that: A baffle is provided on the first rotating shaft, and a photoelectric sensor is provided on the first supporting frame. The detection end of the photoelectric sensor is used to sense the baffle.

8. The battery cell fixing device according to claim 1, characterized in that: The housing is provided with a locking member, and when the second cover is covered on the housing, the locking member can be rotated to a position to press against the second cover or avoid the second cover.

9. The battery cell fixing device according to claim 8, characterized in that: A first magnetic member is disposed on a side of the second cover body away from the accommodating cavity, and a second magnetic member is disposed on a side of the first cover body away from the accommodating cavity. The second cover body can be rotated to a position where the first magnetic member and the second magnetic member are adsorbed.

10. The battery cell fixing device according to claim 1, characterized in that: The shell is provided with a locking assembly, which includes a locking piece. When the first cover is covered on the shell, the locking piece can be rotated to a position to press against the first cover or avoid the first cover.

11. The battery cell fixing device according to claim 10, characterized in that: The first cover body and the shell body jointly define a locking groove, and the shell body is also provided with a receiving groove, and the locking groove and the receiving groove are communicated with each other. The locking assembly includes a rocker arm and a locking member, and the rocker arm is rotatably connected to the shell body, and the locking member is rotatably connected to the rocker arm. The rocker arm can be rotated into the receiving groove or the locking groove, and the rotating axis of the locking member is eccentrically arranged.

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