Battery transfer device

Abstract

The invention provides a battery transfer device, and relates to the technical field of photovoltaic batteries. The battery transfer device comprises a first transfer mechanism, the first transfer mechanism is arranged between two conveying supports, arranged in the first direction in a spaced mode, of a battery production line, the conveying direction of the conveying supports is the second direction, and the first transfer mechanism comprises a liftable first conveying part; the conveying device is used for conveying a fixed tray on which a battery component which is judged to be unqualified is placed along a first direction; the second transfer mechanism is arranged on the side part of the battery production line, corresponds to the first transfer mechanism in position, and comprises a second conveying part used for conveying the fixed tray in the first direction; the replacement platform is arranged at the output end of the second conveying part and used for bearing and fixing the tray, and a first platform is arranged on the side, opposite to the second conveying part, of the replacement platform in the first direction; and the grabbing mechanism is used for controlling the electric clamping jaw to grab the faulty battery in the battery assembly and place the faulty battery on the first platform based on the fault signal of the battery production line.

Description

Technical Field

[0001] The present disclosure relates to the technical field of photovoltaic cells, and in particular to a battery transport device. Background Art

[0002] Currently, in the battery assembly process, batteries are assembled on fixed trays and then transported to the feed port. Next, the picking robot is responsible for grabbing these batteries for subsequent operations. Each battery pack contains multiple individual battery cells, and their quality conditions vary. Some batteries are in good condition, while others may not meet the standards.

[0003] If unqualified battery cells are found in each battery group after testing, the entire group will be judged as unqualified (NG), and the battery cells in good condition will also be wasted, which will directly affect production efficiency and production costs. Summary of the invention

[0004] A technical problem to be solved by the present disclosure is that if unqualified battery cells are detected in the battery production line, the entire group will be judged as unqualified, which will cause the battery cells in good condition to be wasted, affecting production efficiency and production costs.

[0005] In order to solve the above technical problems, the embodiment of the present disclosure provides a battery transport device, which includes: a first transport mechanism, which is arranged between two transport brackets arranged at intervals in a first direction on a battery production line, the transport direction of the transport bracket is a second direction, and the first transport mechanism includes a first transport part that can be raised and lowered, and is used to transport a fixed tray with a battery assembly determined to be unqualified placed thereon along the first direction, wherein at least one of the multiple battery cells of the battery assembly is an unqualified faulty battery;

[0006] A second transfer mechanism is disposed at a side of the battery production line and is located corresponding to the first transfer mechanism, and the second transfer mechanism includes a second conveying portion for conveying the fixed pallet along the first direction;

[0007] A replacement platform is provided at the output end of the second conveying part and is used to support and fix the tray. The replacement platform is provided with a first platform on a side opposite to the second conveying part in the first direction; and

[0008] A gripping mechanism is arranged on the upper side of the replacement platform, and the gripping mechanism includes: a driving track extending along a first direction, used to install and drive a liftable electric gripper to reciprocate along the first direction, and the gripping mechanism is used to control the electric gripper to grip the faulty battery in the battery assembly based on the fault signal of the battery production line and place it on the first platform;

[0009] The first direction and the second direction are perpendicular to each other and are respectively perpendicular to the longitudinal direction.

[0010] In some embodiments, the replacement platform is provided with a first platform and a second platform in sequence on a side opposite to the second conveying portion in the first direction, and the second platform is used to place qualified replaceable batteries;

[0011] After the gripping mechanism grabs the faulty battery, it is also used to control the electric gripper to grab the replaceable battery and add it to the battery assembly.

[0012] In some embodiments, a lifting mechanism is provided at the bottom of the replacement platform to drive the replacement platform to rise or fall;

[0013] The second transfer mechanism includes a third conveying portion, which is located at the bottom of the second conveying portion and is used to convey the fixed pallet in the reverse direction along the first direction;

[0014] A third transfer mechanism is arranged between the first transfer mechanism and the second transfer mechanism. The third transfer mechanism includes a liftable fourth conveying part for conveying the fixed pallet along the first direction or in the reverse direction of the first direction.

[0015] In some embodiments, a fifth conveying portion is disposed on the replacement platform for conveying the fixed pallet along the first direction or in the reverse direction of the first direction.

[0016] In some embodiments, a limiting member is provided on the replacement platform and on a side facing away from the second transfer mechanism, for limiting the position of the fixed tray on the replacement platform.

[0017] In some embodiments, the first conveying portion, the second conveying portion, the third conveying portion, the fourth conveying portion, and the fifth conveying portion respectively include a plurality of conveying rollers spaced apart along the first direction, and the conveying rollers extend along the second direction.

[0018] In some embodiments, the outer circumference of the conveying roller is at least partially covered with an anti-slip layer.

[0019] In some embodiments, it also includes:

[0020] The controller is respectively connected with the first transfer mechanism, the second transfer mechanism, the grasping mechanism, the lifting mechanism, the third transfer mechanism, the fifth conveying unit and the battery production line signal. The controller receives the fault signal of the battery production line and controls the operation of the first transfer mechanism, the second transfer mechanism, the lifting mechanism, the third transfer mechanism and the fifth conveying unit, as well as the action of the grasping mechanism based on the fault signal.

[0021] In some embodiments, a first sensor is disposed on the replacement platform for detecting an in-place signal of the fixed tray, and the first sensor is connected to the controller signal.

[0022] In some embodiments, a second sensor is disposed on the second platform, at least for detecting whether a replaceable battery is placed on the second platform, and the second sensor is connected to the controller signal.

[0023] Through the above technical scheme, the battery transfer device provided by the present invention can transfer the fixed tray of the battery assembly judged as unqualified from the battery production line to the replacement platform through the cooperation of the first transfer mechanism and the second transfer mechanism. The grasping mechanism can control the electric gripper to grasp the faulty battery in the battery assembly based on the fault signal of the battery production line and place it on the first platform for recycling, so that the faulty battery in the battery assembly can be removed, and then subsequently replenished and returned to the battery production line, which can avoid the waste of battery cells in good condition in the battery assembly judged as unqualified, and can ensure that the battery packs at the production site meet strict quality standards, save production and improve production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 is a schematic structural diagram of a battery transport device disclosed in an embodiment of the present disclosure;

[0026] Figure 2 It is a schematic structural diagram of the battery transport device disclosed in an embodiment of the present invention from another angle.

[0027] Description of reference numerals:

[0028] 1. First conveying section; 21. Second conveying section; 22. Third conveying section; 31. Replacement platform; 32. Lifting mechanism; 33. Fifth conveying section; 41. Drive track; 42. Electric gripper; 5. First platform; 6. Second platform; 7. Fourth conveying section; 8. Fixed tray; 9. Battery assembly; 10. Faulty battery; 11. Replaceable battery; 12. Conveying bracket; x, first direction; y, second direction. DETAILED DESCRIPTION

[0029] The following is a further detailed description of the embodiments of the present disclosure in conjunction with the accompanying drawings and examples. The detailed description of the following embodiments and the accompanying drawings are used to exemplarily illustrate the principles of the present disclosure, but cannot be used to limit the scope of the present disclosure. The present disclosure can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

[0030] The present disclosure provides these embodiments to make the present disclosure thorough and complete, and to fully express the scope of the present disclosure to those skilled in the art. It should be noted that unless otherwise specifically stated, the relative arrangement of the parts and steps, the composition of the materials, the numerical expressions and the numerical values ​​set forth in these embodiments should be interpreted as being merely exemplary, and not as limiting.

[0031] It should be noted that, in the description of the present disclosure, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present disclosure. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0032] In addition, the words "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0033] It should also be noted that in the description of the present disclosure, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances. When a specific device is described as being located between a first device and a second device, there may or may not be an intermediate device between the specific device and the first device or the second device.

[0034] All terms used in the present disclosure have the same meanings as those understood by those of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, for example, should be interpreted as having meanings consistent with their meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined as such herein.

[0035] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0036] Example

[0037] Referring to the accompanying drawings, an embodiment of the present invention proposes a battery transport device, which includes: a first transport mechanism, which is arranged between two transport brackets 12 of a battery production line that are spaced apart in a first direction x, the transport direction of the transport bracket 12 is a second direction y, the first transport mechanism includes a liftable first transport portion 1, which is used to transport a fixed tray 8 on which a battery assembly 9 that is determined to be unqualified is placed along the first direction x, and at least one of the multiple battery cells of the battery assembly 9 is an unqualified faulty battery 10; a second transport mechanism, which is arranged on the side of the battery production line and is located corresponding to the first transport mechanism, and the second transport mechanism includes a second transport portion 21, which is used to transport along the first direction x. A fixed pallet 8 is delivered; a replacement platform 31 is arranged at the output end of the second conveying part 21, and is used to support the fixed pallet 8. The replacement platform 31 is provided with a first platform 5 on the side opposite to the second conveying part 21 in the first direction x; and a grasping mechanism is arranged on the upper side of the replacement platform 31, and the grasping mechanism comprises: a driving track 41 extending along the first direction x, and is used to install and drive a liftable electric clamp 42 to reciprocate along the first direction x, and the grasping mechanism is used to control the electric clamp 42 to grasp the faulty battery 10 in the battery assembly 9 and place it on the first platform 5 based on the fault signal of the battery production line; wherein the first direction x and the second direction y are perpendicular to each other, and are respectively perpendicular to the longitudinal direction.

[0038] Specifically, the battery transfer device provided in this embodiment is used to cooperate with the battery production line to remove the unqualified faulty batteries 10 in the battery assembly 9 determined as unqualified by the battery production line for subsequent replacement, thereby avoiding the battery cells in good condition in the battery assembly 9 determined as unqualified from being wasted; during the operation of the battery production line, the battery assembly 9 is assembled onto the fixed tray 8, and the battery production line transports the fixed tray 8 with the battery assembly 9 placed thereon along the second direction y to the feed port through two conveying brackets 12 arranged at intervals in the first direction x; wherein the first direction x and the second direction y are perpendicular to each other and are respectively perpendicular to the longitudinal direction.

[0039] The battery transport device provided in this embodiment mainly includes: a first transport mechanism, a second transport mechanism, a replacement platform 31 and a grabbing mechanism that cooperate with each other.

[0040] The first transfer mechanism is located between two conveying brackets 12 of the battery production line, and the first transfer mechanism includes a liftable first conveying section 1, and the first conveying section 1 is used to convey the fixed pallet 8 on which the battery components 9 determined to be unqualified are placed along the first direction x; when the battery production line does not detect unqualified battery components 9, the height of the first conveying section 1 is lower than the height of the conveying bracket 12, and does not affect the conveying of the fixed pallet 8 by the conveying bracket 12. When the battery production line detects unqualified battery components 9, and the battery components 9 are conveyed to the position corresponding to the first transfer mechanism by the conveying bracket 12, the height of the first transfer mechanism rises, so that the fixed pallet 8 on which the battery components 9 determined to be unqualified are placed can be transferred to the first conveying section 1, and the fixed pallet 8 can be transferred along the first direction x by the first conveying section 1; wherein, along the first direction x refers to the positive direction along the first direction x, that is, the direction from the first transfer mechanism to the replacement platform 31.

[0041] The second transfer mechanism is arranged on the side of the battery production line, and its position in the second direction y corresponds to the first transfer mechanism. The second transfer mechanism includes a second conveying part 21, which is used to convey the fixed pallet 8 along the first direction x. The height of the second conveying part 21 can be set to be slightly higher than the height of the conveying bracket 12, and equal to the height after the height of the first conveying part 1 is raised. Therefore, the second conveying part 21 can receive the fixed pallet 8 transferred by the first conveying part 1 and continue to convey it along the first direction x until the fixed pallet 8 is conveyed to the replacement platform 31 located at the output end of the second conveying part 21. The height of the replacement platform 31 is adapted to the height of the second conveying part 21, and a first platform 5 is also provided on the side of the replacement platform 31 away from the second conveying part 21.

[0042] The gripping mechanism is located on the upper side of the replacement platform 31, and the mechanism specifically includes a driving rail 41 and an electric gripper 42. The electric gripper 42 is installed on the driving rail 41, and the electric gripper 42 can be driven by the driving rail 41 to reciprocate along the first direction x. The matching mode of the driving rail 41 and the electric gripper 42 is not limited to electric drive or a screw-connected motor and a driving mode in conjunction with a slider or other linear motion driving modes; the electric gripper 42 has a lifting function, which can be achieved by electric telescopic or hydraulic telescopic or pneumatic telescopic mechanisms. The electric gripper 42 has the functions of opening and clamping, and the gripping mechanism can obtain electric The fault signal of the battery production line is used to determine the position of the unqualified faulty battery 10 in the battery assembly 9, so that the electric gripper 42 grabs the faulty battery 10 and places it on the first platform 5, so that the faulty battery 10 in the battery assembly 9 can be removed. Subsequent staff can replenish qualified battery cells into the battery assembly 9 to make the entire battery assembly 9 in a good state and return it to the battery production line. Of course, this process can also be achieved by a transfer device, which will be described in detail below; wherein, a frame structure can be set at the position corresponding to the replacement platform 31 and the grabbing mechanism for stable installation of the drive rail 41.

[0043] It should be noted that if the multiple battery cells of the battery assembly 9 are all unqualified faulty batteries 10, no grabbing action is performed, and the staff can directly transfer the battery assembly 9 for recycling.

[0044] According to the above, an embodiment of the present invention proposes a battery transfer device, which can transfer the fixed tray 8 of the battery assembly 9 judged as unqualified from the battery production line to the replacement platform 31 through the cooperation of the first transfer mechanism and the second transfer mechanism, and the grabbing mechanism can control the electric clamp 42 to grab the faulty battery 10 in the battery assembly 9 based on the fault signal of the battery production line and place it on the first platform 5 for recycling, so that the faulty battery 10 in the battery assembly 9 can be removed, and then subsequently replenished and returned to the battery production line, which can avoid the battery cells in good condition in the battery assembly 9 that are judged as unqualified from being wasted, and can ensure that the battery packs at the production site meet strict quality standards, save production and improve production efficiency.

[0045] Furthermore, in a specific implementation, the battery transfer device provided in this embodiment may also include: a controller, which internally stores instructions for executing logical operations, sequential control and other operations, and is connected to the battery production line and the signals of various motion mechanisms of the battery transfer device. The motion mechanisms here include a grasping mechanism, various transfer mechanisms, various conveying parts and a lifting mechanism 32, etc. The controller can receive a fault signal from the battery production line, and control the operation of each motion mechanism and the action of the grasping mechanism based on the fault signal, so as to control the various mechanisms to cooperate in completing the removal of the faulty battery 10 in the battery assembly 9 and the replacement of the replaceable battery 11, etc.

[0046] For further information, see Attachment Figure 1 In a specific implementation, the replacement platform 31 is provided with a first platform 5 and a second platform 6 in sequence on the side opposite to the second conveying part 21 in the first direction x. The second platform 6 is used to place qualified replaceable batteries 11. After the grasping mechanism grasps the faulty battery 10, it is also used to control the electric gripper 42 to grasp the replaceable battery 11 and replenish it to the battery assembly 9.

[0047] Specifically, in order to realize automatic replenishment of battery cells in good condition at vacant positions after the faulty battery 10 is removed, in the technical solution adopted by the present invention, a second platform 6 can be set on the side of the first platform 5 away from the replacement platform 31, and the second platform 6 is equal to the height of the first platform 5. A qualified replaceable battery 11 in good condition is pre-placed on the second platform 6, and the driving track 41 extends to the top of the second platform 6; after the faulty battery 10 is placed on the first platform 5 through the gripping mechanism hole to the electric clamp 42, it is also used to control the electric clamp 42 to grab a replaceable battery 11 on the second platform 6, and replenish the replaceable battery 11 to the vacant position of the battery assembly 9, thereby improving the quality of the entire battery assembly 9.

[0048] Among them, in order to avoid the situation that the replaceable batteries 11 on the second platform 6 are grabbed but not replenished in time, affecting the progress of replacement of the battery assembly 9, a second sensor can be arranged on the second platform 6, and the second sensor is connected to the controller signal. The controller can at least determine whether there are replaceable batteries 11 placed on the second platform 6 through the signal measured by the second sensor. The type of the second sensor can be an infrared sensor, or it can also be a weighing sensor. When the type of the second sensor is a weighing sensor, the controller can also determine the number of replaceable batteries 11 on the second platform 6, and an alarm unit can be configured to remind the staff to replenish them in time when the replaceable batteries 11 are missing or the number of replaceable batteries 11 is insufficient.

[0049] For further information, see Attachment Figure 1 In a specific implementation, a lifting mechanism 32 is provided at the bottom of the replacement platform 31 for driving the replacement platform 31 to rise or fall; the second transfer mechanism includes a third conveying portion 22, which is located at the bottom of the second conveying portion 21 and is used to convey the fixed pallet 8 in the reverse direction of the first direction x; a third transfer mechanism is provided between the first transfer mechanism and the second transfer mechanism, and the third transfer mechanism includes a liftable fourth conveying portion 7 for conveying the fixed pallet 8 in the first direction x or in the reverse direction of the first direction x.

[0050] Specifically, in order to achieve the automatic transfer of the entire battery assembly 9 back to the battery production line after the faulty battery 10 in the battery assembly 9 is removed and the replaceable battery 11 is supplemented, in the technical solution adopted by the present invention, a lifting mechanism 32 is arranged at the bottom of the replacement platform 31, and the lifting mechanism 32 here can be an electric telescopic mechanism, a hydraulic telescopic mechanism, etc., which is not specifically limited here. The lifting mechanism 32 can drive the replacement platform 31 to rise or fall; the second transfer mechanism also includes a third conveying part 22 located at the bottom of the second conveying part 21, and the third conveying part 22 is used to transport the fixed pallet 8 in the reverse direction of the first direction x; and a third transfer mechanism is arranged between the first transfer mechanism and the second transfer mechanism, and the third transfer mechanism includes a liftable fourth conveying part 7, and the fourth conveying part 7 is used to transport the fixed pallet 8 in the first direction x or in the reverse direction of the first direction x.

[0051] When the first transfer mechanism transfers the battery assembly 9 that is judged to be unqualified, the fourth conveyor part 7 of the third transfer mechanism rises to the same height as the first conveyor part 1, and the conveying direction at this time is the first direction x, and the battery assembly 9 that is judged to be unqualified is conveyed to the replacement platform 31 by the first conveyor part 1, the fourth conveyor part 7 and the second conveyor part 21 in sequence; after the faulty battery 10 in the battery assembly 9 is removed and the replaceable battery 11 is supplemented, the fourth conveyor part 7 and the replacement platform 31 are respectively lowered to the same height as the third conveyor part 22, and the fourth conveyor part 7 and the replacement platform 31 are respectively lowered to the same height as the third conveyor part 22. The conveying direction of the conveying part 7 is opposite to the first direction x. After the battery assembly 9 is transferred from the third conveying part 22 to the fourth conveying part 7, the fourth conveying part 7 and the first conveying part 1 rise to the same height as the second conveying part 21, so that the battery assembly 9 can be transferred from the fourth conveying part 7 to the first conveying part 1, and the first conveying part 1 descends again to below the conveying support 12, so that the battery assembly 9 can return to the battery production line and continue to be conveyed to the feed port to continue the subsequent production steps; such a design can realize the efficient transfer and replacement of battery assemblies 9 judged as unqualified.

[0052] For further information, see Attachment Figure 1 In a specific implementation, a fifth conveying portion 33 is provided on the replacement platform 31 for conveying the fixed tray 8 along the first direction x or in the reverse direction of the first direction x.

[0053] Specifically, in order to enable the replacement platform 31 to efficiently receive or transfer the fixed pallet 8, in the technical solution adopted by the present invention, a fifth conveying unit 33 can be provided on the replacement platform 31. When the second conveying unit 21 transfers the battery assembly 9 to the replacement platform 31, the conveying direction of the fifth conveying unit 33 is the first direction x. When the faulty battery 10 in the battery assembly 9 is removed and the replaceable battery 11 is supplemented, the conveying direction of the fifth conveying unit 33 is opposite to the first direction x, and the battery assembly 9 is transferred to the fourth conveying unit 7. The fourth conveying unit 7 can be provided above the replacement platform 31, or the replacement platform 31 can be formed by the fourth conveying unit 7.

[0054] Among them, under this setting, in order to prevent the fifth conveying part 33 from over-conveying the fixed tray 8, a limiting member can be set on the replacement platform 31 and on the side away from the second transfer mechanism. The limiting member can be a plate, a rod or a bracket, etc., which is not specifically limited here. The setting of the limiting member can limit the position of the fixed tray 8 on the replacement platform 31, and can ensure the accuracy of the position of the replacement platform 31, so that the electric gripper 42 can accurately grasp the faulty battery 10.

[0055] Specifically, in order to control the action of the grabbing mechanism after the fixed pallet 8 is transferred to the replacement platform 31, a first sensor may be provided on the replacement platform 31. The first sensor is connected to the controller signal. The controller determines whether the fixed pallet 8 reaches the specified position of the replacement platform 31 based on the in-position signal detected by the first sensor. After the fixed pallet 8 reaches the specified position, the controller may control the grabbing mechanism to perform the grabbing action to improve efficiency and reliability. The first sensor may be a photoelectric sensor, but is not limited to this.

[0056] Among them, the first conveying part 1, the second conveying part 21, the third conveying part 22, the fourth conveying part 7 and the fifth conveying part 33 can adopt the same conveying method. For example, each conveying part can respectively include a plurality of conveying rollers arranged at intervals along the first direction x, and the conveying rollers extend along the second direction y. In order to improve the conveying efficiency of the conveying rollers, the outer peripheral surface of the conveying rollers can be at least partially covered with an anti-slip layer. The anti-slip layer can be made of but not limited to rubber material. The provision of the anti-slip layer can increase the friction between the conveying rollers and the fixed tray 8, thereby improving the conveying efficiency; or each conveying part can also adopt a conveyor belt transfer method, which is not specifically limited here.

[0057] So far, various embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Based on the above description, those skilled in the art can fully understand how to implement the technical solution disclosed here.

[0058] Although some specific embodiments of the present disclosure have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It should be understood by those skilled in the art that the above embodiments may be modified or some technical features may be replaced by equivalents without departing from the scope and spirit of the present disclosure. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there is no structural conflict.

Claims

1. A battery transport device, characterized in that: include: A first transfer mechanism is arranged between two conveying brackets (12) of a battery production line and arranged at intervals in a first direction (x), wherein the conveying direction of the conveying bracket (12) is a second direction (y), and the first transfer mechanism comprises a first transporting portion (1) which can be raised or lowered and is used to transport a fixed tray (8) on which a battery assembly (9) determined to be unqualified is placed along the first direction (x), wherein at least one of a plurality of battery cells of the battery assembly (9) is an unqualified faulty battery (10); A second transfer mechanism, arranged at a side of the battery production line and located corresponding to the first transfer mechanism, the second transfer mechanism comprising a second conveying portion (21) for conveying the fixed tray (8) along the first direction (x); a replacement platform (31), arranged at the output end of the second conveying part (21), used for supporting the fixed tray (8), wherein the replacement platform (31) is provided with a first platform (5) on a side opposite to the second conveying part (21) in the first direction (x); and A gripping mechanism is arranged on the upper side of the replacement platform (31), the gripping mechanism comprising: a driving track (41) extending along a first direction (x), used for installing and driving a liftable electric gripper (42) to reciprocate along the first direction (x), the gripping mechanism being used for controlling the electric gripper (42) to grip the faulty battery (10) in the battery assembly (9) and place it on the first platform (5) based on a fault signal of the battery production line; The first direction (x) and the second direction (y) are perpendicular to each other and are respectively perpendicular to the longitudinal direction.

2. The battery transport device according to claim 1, characterized in that: The replacement platform (31) is provided with a first platform (5) and a second platform (6) in sequence on a side opposite to the second conveying portion (21) in the first direction (x), and the second platform (6) is used to place qualified replaceable batteries (11); After the grasping mechanism grasps the faulty battery (10), it is also used to control the electric gripper (42) to grasp the replaceable battery (11) and replenish it into the battery assembly (9).

3. The battery transport device according to claim 2, characterized in that: A lifting mechanism (32) is provided at the bottom of the replacement platform (31) for driving the replacement platform (31) to rise or fall; The second transfer mechanism comprises a third conveying portion (22), the third conveying portion (22) being located at the bottom of the second conveying portion (21) and being used for conveying the fixed tray (8) in the opposite direction of the first direction (x); A third transfer mechanism is arranged between the first transfer mechanism and the second transfer mechanism, and the third transfer mechanism comprises a fourth transporting part (7) which can be raised or lowered and is used for transporting the fixed tray (8) along the first direction (x) or in the opposite direction of the first direction (x).

4. The battery transport device according to claim 3, characterized in that: The replacement platform (31) is provided with a fifth conveying portion (33) for conveying the fixed tray (8) along the first direction (x) or in the opposite direction of the first direction (x).

5. The battery transport device according to claim 3, characterized in that: A limiting member is provided on the replacement platform (31) and on a side away from the second transfer mechanism, for limiting the position of the fixed tray (8) on the replacement platform (31).

6. The battery transport device according to claim 4, characterized in that: The first conveying part (1), the second conveying part (21), the third conveying part (22), the fourth conveying part (7) and the fifth conveying part (33) respectively include a plurality of conveying rollers arranged at intervals along the first direction (x), and the conveying rollers extend along the second direction (y).

7. The battery transport device according to claim 6, characterized in that: The outer peripheral surface of the conveying roller is at least partially covered with an anti-slip layer.

8. The battery transport device according to claim 4, characterized in that: Also includes: A controller, wherein the controller is respectively connected to the first transfer mechanism, the second transfer mechanism, the grasping mechanism, the lifting mechanism (32), the third transfer mechanism, the fifth conveying unit (33) and the battery production line signal, the controller receives the fault signal of the battery production line, and controls the operation of the first transfer mechanism, the second transfer mechanism, the lifting mechanism (32), the third transfer mechanism and the fifth conveying unit (33), as well as the action of the grasping mechanism based on the fault signal.

9. The battery transport device according to claim 8, characterized in that: The replacement platform (31) is provided with a first sensor for detecting an arrival signal of the fixed tray (8), and the first sensor is signal-connected to the controller.

10. The battery transport device according to claim 8, characterized in that: The second platform (6) is provided with a second sensor, which is at least used to detect whether the replaceable battery (11) is placed on the second platform (6), and the second sensor is connected to the controller signal.

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