A steel strapping device and method for fuel cell stack

Abstract

The present invention provides a steel belt bundling device and method for a fuel cell stack. The device comprises: a pressing jig mechanism; a steel belt double bending mechanism is arranged on one side of the pressing jig mechanism; a steel belt lower bending mechanism is arranged on the pressing jig mechanism; a steel belt positioning mechanism is arranged on the other side of the pressing jig mechanism; and a steel belt welding mechanism is arranged on the other side of the pressing jig mechanism. The present invention supports and presses the fuel cell stack through the pressing jig mechanism; positions, vertically tightens and bidirectionally bends the steel belt through the steel belt double bending mechanism; bends the steel belt extending along the top wall of the fuel cell stack downward through the steel belt lower bending mechanism; positions, vertically tightens and welds the steel belt through the steel belt positioning mechanism, and welds the two stacked and pressed steel belt heads through the steel belt welding mechanism to complete the bundling of the steel belt, thereby reducing the manual workload and realizing mechanized production.

Description

Technical Field

[0001] The present invention relates to the technical field of steel strip bundling for fuel cell stacks, and in particular to a steel strip bundling device and method for fuel cell stacks. Background Art

[0002] With the rapid development of hydrogen fuel cell application technology, the application fields of hydrogen fuel cell power modules have gradually expanded to electric vehicles, energy storage, communications, mining and other fields. At present, according to the established technical route, multiple single battery modules need to be connected in series or in parallel, arranged and combined together to form a single battery module unit, and steel belts need to be used for binding in this process.

[0003] Currently, the existing steel strapping for fuel cell stacks is basically done manually, and there is no automated strapping method. Manual steel strapping of fuel cell stacks is labor-intensive, and the bundled products have poor consistency, and the quality of the products cannot be effectively guaranteed. At the same time, manual operation has low production efficiency and is not suitable for industrial mass production. Summary of the invention

[0004] In view of this, the present invention proposes a steel strapping device and method for a fuel cell stack, aiming to solve the problem that the existing steel strapping of the fuel cell stack is a manual operation with high labor intensity and poor product consistency.

[0005] On the one hand, the present invention proposes a steel belt bundling device for a fuel cell stack, the device comprising: a pressing jig mechanism, used to support and press-fix the fuel cell stack and to press the steel belt on the fuel cell stack; a steel belt double-bending mechanism, arranged on one side of the pressing jig mechanism, used to position, vertically tighten and bidirectionally bend the steel belt, so that the steel belt passes through the bottom of the fuel cell stack and then bends upward, extends vertically upward along one side wall of the fuel cell stack to the top of the fuel cell stack, and is horizontally bent again under the action of a horizontal bending force, and extends horizontally along the top wall of the fuel cell stack to the other side of the fuel cell stack; a steel belt lower bending mechanism, arranged on the pressing jig mechanism, used to bend the steel belt extending along the top wall of the fuel cell stack to the Bend downward so that the steel belt extends vertically downward along the other side wall of the fuel cell stack, so that one steel belt head of the steel belt extends downward; a steel belt positioning mechanism is arranged on the other side of the pressing jig mechanism, and is used to position, vertically tighten and weld and press the steel belt, so that after the steel belt extends from the bottom of the fuel cell stack, it is bent from the other side of the fuel cell stack and extends vertically upward along the other side wall of the fuel cell stack, so that the other steel belt head of the steel belt is pressed and contacted on the other side wall of the fuel cell stack, and the two steel belt heads of the steel belt are pressed, so that the two steel belt heads of the steel belt are stacked and pressed on the side wall of the fuel cell stack; a steel belt welding mechanism is arranged on the other side of the pressing jig mechanism, and is used to weld the two stacked and pressed steel belt heads to complete the bundling of the steel belts.

[0006] Further, in the steel belt bundling device for the fuel cell stack, the steel belt double bending mechanism includes: a first three-dimensional moving component; a first steel belt positioning and tensioning component, which is arranged on the power output end of the first three-dimensional moving component and is used to be clamped in the tensioning hole of the steel belt to realize the positioning of the steel belt, and can drive the steel belt to be tightened upward into place under the action of the first three-dimensional moving component, so that the bottom of the steel belt is bent upward and extends upward along the side wall of the fuel cell stack; a steel belt side clamping component, which is arranged on the power output end of the first three-dimensional moving component and is located above the first steel belt positioning and tensioning component, and is used to press the steel belt after the steel belt is tightened upward into place, so that the steel belt extends upward and presses against the side wall of the fuel cell stack; a steel belt horizontal bending component, which is arranged on the power output end of the first three-dimensional moving component and is located above the steel belt side clamping component, and is used to apply a horizontal bending force to the steel belt after the steel belt is pressed onto the side wall of the fuel cell stack, so that the steel belt is horizontally bent and extends horizontally along the top wall of the fuel cell stack.

[0007] Furthermore, in the above-mentioned steel strip bundling device for fuel cell stacks, the first three-dimensional moving component includes: an X-axis bending moving part; a Y-axis bending moving part, which is arranged on the X-axis bending moving part and is used to move along the X-axis along with the output end of the X-axis bending moving part; a Z-axis bending moving part, which is arranged on the Y-axis bending moving part and is used to move along the Y-axis along with the output end of the Y-axis bending moving part, and drives the Z-axis slide seat arranged on the Z-axis bending moving part to move along the Z-axis, thereby realizing the three-dimensional movement of the actuator on the support seat.

[0008] Furthermore, in the above-mentioned steel belt bundling device for fuel cell stacks, the first steel belt positioning and tensioning assembly includes: a tensioning head fixing seat; a floating fixing seat, which is movably arranged on the tensioning head fixing seat along the z-axis, and a force spring is provided between the floating fixing seat and the tensioning head fixing seat; a telescopic pull rod, which is telescopically arranged on the floating fixing seat, and is used to extend and penetrate into the tensioning hole of the steel belt when the steel belt is positioned, tightened and bent, so as to pull the steel belt upward to tighten, and after the steel belt is tightened, the steel belt applies a tension to the telescopic pull rod, so that the telescopic pull rod and the floating fixing seat float along the z-axis, and under the action of the force spring, the telescopic pull rod applies a constant tension to the steel belt along the z-axis; and after the steel belt is tightened and bent into place, the telescopic pull rod can retract to release the tension and positioning of the steel belt.

[0009] Furthermore, in the above-mentioned steel belt bundling device for fuel cell stacks, the pressing jig mechanism includes: an electric push positioning assembly, used for bottom support and limiting the fuel cell stack; a top pressing assembly, arranged directly above the electric push positioning assembly, used for top pressing the fuel cell stack on the electric push positioning assembly, and top pressing the steel belt that is pressed against the top wall of the fuel cell stack.

[0010] Furthermore, in the above-mentioned steel belt bundling device for fuel cell stacks, the electric push positioning assembly includes: an electric push carrier; a circumferential limiter, which is arranged on the electric push carrier, and the electric push carrier is used to support the bottom of the fuel cell stack and circumferentially limit the fuel cell stack through the circumferential limiter; the electric push positioning assembly is a mobile assembly, and the electric push carrier of the electric push positioning assembly is connected to a transverse conveying member, so that the electric push carrier can move laterally under the action of the transverse conveying member, thereby driving the fuel cell stack to move laterally, so that the fuel cell stack can move between the loading position and the bundling position, so as to facilitate the loading, unloading and bundling of the fuel cell stack.

[0011] Furthermore, in the above-mentioned steel belt bundling device for fuel cell stacks, the top pressing assembly includes: a pressing support seat; a stack pressing piece, which is arranged on the pressing support seat in a position-adjustable manner along the height direction, and is used for top pressing the fuel cell stack on the electric push vehicle; a U-shaped groove structure is provided at the bottom of the stack pressing piece, and the solid part of the stack pressing piece is used for pressing on the top wall of the fuel cell stack, and the U-shaped groove structure is used to make way for the steel belt so that the steel belt can extend horizontally along the top wall of the fuel cell stack in the U-shaped groove structure; a steel belt presser, which is arranged on the stack pressing piece, and is used for top pressing the steel belt that is pressed against the top wall of the fuel cell stack; wherein the steel belt presser is arranged in the U-shaped groove structure.

[0012] Furthermore, in the above-mentioned steel belt bundling device for fuel cell stack, the steel belt positioning mechanism includes: a second three-dimensional moving component; a second steel belt positioning and tensioning component, which is arranged on the power output end of the second three-dimensional moving component and is used to move under the action of the second three-dimensional moving component so that the second steel belt positioning and tensioning component can be clamped in the tensioning hole of the steel belt, thereby realizing the positioning of the steel belt, and can, under the action of the second three-dimensional moving component, drive the steel belt to be tightened upward into place so that the bottom of the steel belt is bent upward and extends upward along the side wall of the fuel cell stack, and the first steel belt head of the steel belt is pressed and contacted against the side wall of the fuel cell stack; a steel belt welding and clamping component, which is arranged on the power output end of the second three-dimensional moving component and is located above the second steel belt positioning and tensioning component, and is used to weld and clamp the two steel belt heads of the steel belt when the two steel belt heads are overlapped on the side wall of the fuel cell stack so that the two steel belt heads of the steel belt are pressed and contacted against the side wall of the fuel cell stack.

[0013] Furthermore, in the above-mentioned steel strip bundling device for fuel cell stacks, the steel strip welding mechanism includes: a welding support seat; a Y-axis welding movable assembly, which is arranged on the welding support seat; a Z-axis welding movable assembly, which is arranged on the Y-axis welding movable assembly and is used for performing Y-axis movement on the Y-axis welding movable assembly to move to the longitudinal position of the corresponding steel strip; an X-axis welding movable assembly, which is arranged on the Z-axis welding movable assembly, and a welding head is provided on the X-axis welding movable assembly, which is used for performing three-dimensional movement under the action of the Y-axis welding movable assembly, the Z-axis welding movable assembly and the X-axis welding movable assembly, so that the welding head moves to the place where the two steel strip heads of the corresponding steel strip are stacked and pressed, so as to weld the two steel strip heads.

[0014] On the other hand, the present invention also proposes a steel belt bundling method for a fuel cell stack, the steel belt bundling method comprising the following steps: pressing and fixing the fuel cell stack by a pressing jig mechanism; pre-punching two tensioning holes on the steel belt, and passing the steel belt through the gap between the bottom of the fuel cell stack and the pressing jig mechanism, positioning the two tensioning holes of the steel belt on both sides of the fuel cell stack, and bending the steel belt into an arc structure; respectively clamping the two tensioning holes of the steel belt on the steel belt double bending mechanism and the steel belt positioning mechanism; respectively driving the two steel sections of the steel belt to be pulled upward by the steel belt double bending mechanism and the steel belt positioning mechanism, so that the two steel sections of the steel belt The bottom is bent upward, and a steel strip section is compressed and horizontally bent again by a steel strip double bending mechanism, so that a steel strip section extends horizontally along the top wall of the fuel cell stack to the other side of the fuel cell stack; the steel strip extending along the top wall of the fuel cell stack is bent downward by the steel strip lower bending mechanism, so that the steel strip extends vertically downward along the other side wall of the fuel cell stack, so that a steel strip head of the steel strip extends downward; the steel strip head extending downward and the steel strip head pulled upward are stacked and compressed on the side wall of the fuel cell stack; the stacked and compressed first steel strip head and the second steel strip head are welded by a steel strip welding mechanism to complete the bundling of the steel strips.

[0015] The steel belt bundling device and method for a fuel cell stack provided by the present invention supports and presses the fuel cell stack and presses the steel belt on the fuel cell stack through a pressing fixture mechanism; the steel belt is positioned, vertically tightened and bidirectionally bent through a steel belt double-bending mechanism, so that the steel belt passes through the bottom of the fuel cell stack and then bends upward, vertically extends upward along one side wall of the fuel cell stack to the top of the fuel cell stack, and is horizontally bent again under the action of a horizontal bending force, and horizontally extends along the top wall of the fuel cell stack to the other side of the fuel cell stack; the steel belt extending along the top wall of the fuel cell stack is bent downward through a steel belt lower bending mechanism, so that the steel belt extends vertically downward along the other side wall of the fuel cell stack, so that one steel belt head of the steel belt extends downward; the steel belt is positioned and vertically tightened through a steel belt positioning mechanism and welding and pressing, so that after the steel belt extends from the bottom of the fuel cell stack, it is bent from the other side of the fuel cell stack and extends vertically upward along the other side wall of the fuel cell stack, so that the other steel belt head of the steel belt is pressed against the other side wall of the fuel cell stack, and the two steel belt heads of the steel belt are pressed, so that the two steel belt heads of the steel belt are stacked and pressed on the side wall of the fuel cell stack; the two stacked and pressed steel belt heads are welded by the steel belt welding mechanism to complete the bundling of the steel belt, which reduces the manual workload and realizes mechanized production, so that the quality consistency and qualified rate of the steel belt bundling are effectively guaranteed, and the problem of high labor intensity and poor product consistency of the existing stack steel belt bundling is solved, and some production processes with low efficiency and low production capacity of stack products are mainly solved, which greatly improves the quality of the products produced.

[0016] Furthermore, the steel belt positioning mechanism and the steel belt double bending mechanism are both equipped with three-dimensional moving components, which can be compatible with battery stack products with different steel belt lengths and sizes through X, Y, and Z three-axis tensioning and pressure bending to meet product function and performance requirements. At the same time, the mechanism is flexible and stable to use.

[0017] Furthermore, the steel belt is positioned, vertically tightened and bidirectionally bent through the steel belt double-bending mechanism. The positioning allows the steel belt to perform corresponding movements under the action of the steel belt double-bending mechanism, so that the steel belt can be vertically tightened to achieve one bending, and the steel belt is subjected to a horizontal bending force through the steel belt double-bending mechanism, so that the steel belt is bent horizontally again. Compared with the existing upper bending device or one-way bending device, the steel belt double-bending mechanism can directly achieve bidirectional bending of the steel belt and realize the integration of bending devices in two directions. It has a compact structure, is easy to transport, is conducive to promotion and use, and has a strong economic value. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0019] Figure 1 A schematic structural diagram of a steel belt bundling device for a fuel cell stack provided in an embodiment of the present invention;

[0020] Figure 2 A front view of a steel strapping device for a fuel cell stack provided by an embodiment of the present invention;

[0021] Figure 3 A schematic diagram of the structure of a steel belt bundling device for a fuel cell stack provided by an embodiment of the present invention when the steel belt is stretched;

[0022] Figure 4 A partial front view of the position of a steel strip after double bending in a steel strip bundling device for a fuel cell stack provided by an embodiment of the present invention;

[0023] Figure 5 A partial front view of the position of the steel strip when the steel strip is bent and welded in the steel strip bundling device for a fuel cell stack provided by an embodiment of the present invention;

[0024] Figure 6 A schematic diagram of the structure of a pressing fixture mechanism in a steel strapping device for a fuel cell stack provided in an embodiment of the present invention;

[0025] Figure 7 A side view of a pressing jig mechanism in a steel strapping device for a fuel cell stack provided in an embodiment of the present invention;

[0026] Figure 8 A schematic diagram of the structure of a top pressing assembly provided in an embodiment of the present invention;

[0027] Fig. 9 A side view of a top press assembly provided by an embodiment of the present invention;

[0028] Fig.10 A schematic structural diagram of a steel strip double bending mechanism provided in an embodiment of the present invention;

[0029] Fig.11 A schematic diagram of the structure of the steel strip double bending mechanism in another direction provided by an embodiment of the present invention;

[0030] Fig.12 A front view of a steel strip double bending mechanism provided by an embodiment of the present invention;

[0031] Fig.13A rear view of the steel strip double bending mechanism provided by an embodiment of the present invention;

[0032] Fig.14 A schematic diagram of the structure of the combined connection of the X-axis bending moving part, the Y-axis bending moving part and the steel belt double bending base provided in an embodiment of the present invention;

[0033] Fig.15 A top view of the combined connection of the X-axis bending moving part, the Y-axis bending moving part and the steel belt double bending base provided in an embodiment of the present invention;

[0034] Fig.16 A front view of the combined connection of the X-axis bending moving part, the Y-axis bending moving part and the steel belt double bending base provided in an embodiment of the present invention;

[0035] Fig.17 A schematic structural diagram of a combined connection of a Z-axis bending moving member, a steel strip side clamping assembly, a steel strip horizontal bending assembly and a first steel strip positioning and tensioning assembly provided in an embodiment of the present invention;

[0036] Fig.18 A front view of the combined connection of the Z-axis bending moving member, the steel strip side clamping assembly, the steel strip horizontal bending assembly and the first steel strip positioning and tensioning assembly provided in an embodiment of the present invention;

[0037] Fig.19 A top view of the combined connection of the Z-axis bending moving member, the steel strip side clamping assembly, the steel strip horizontal bending assembly and the first steel strip positioning and tensioning assembly provided in an embodiment of the present invention;

[0038] Fig. 20 A side view of the combined connection of the Z-axis bending moving member, the steel strip side clamping assembly, the steel strip horizontal bending assembly and the first steel strip positioning and tensioning assembly provided in an embodiment of the present invention;

[0039] Fig.21 A schematic structural diagram of a first steel belt positioning and tensioning assembly provided in an embodiment of the present invention;

[0040] Fig. 22 A side view of a first steel belt positioning and tensioning assembly provided by an embodiment of the present invention;

[0041] Fig.23 A cross-sectional view of a first steel belt positioning and tensioning assembly provided in an embodiment of the present invention;

[0042] Fig.24 A schematic structural diagram of a steel strip welding mechanism provided by an embodiment of the present invention;

[0043] Fig.25 A flowchart of a steel strip bundling method for a fuel cell stack provided in an embodiment of the present invention;

[0044] Description of the accompanying drawings: 1-pressing fixture mechanism, 11-electric push positioning assembly, 111-electric push carrier, 112-circumferential limiter, 113-carrier support seat, 114-lifting piece, 12-top pressing assembly, 121-pressing support seat, 1211-bottom fixing seat, 1212-guide rod, 1213-top support seat, 1214-lifting ear, 122-battery stack pressing piece, 1221-U-shaped groove structure, 123-steel belt pressing piece, 123 1-vertical telescopic drive member, 1232-steel belt pressing body, 124-pressing positioning structure, 1241-vertical positioning column, 2-steel belt positioning mechanism, 21-second three-dimensional moving component, 22-second steel belt positioning and tightening component, 23-steel belt head pressing component, 3-steel belt double bending mechanism, 31-first three-dimensional moving component, 311-X-axis bending moving member, 3111-X-axis driving motor, 3112-X-axis moving screw, 3113-X-axis moving Slider, 3114-X-axis driven slider, 312-Y-axis bending moving part, 3121-Y-axis driving motor, 313-Z-axis bending moving part, 3131-Z-axis driving motor, 3132-Z-axis moving screw, 3133-Z-axis slide, 3134-Z-axis guide rail, 3135-transmission part, 314-Z-axis fixed plate, 32-first steel belt positioning and tensioning assembly, 321-tensioning head fixed seat, 322-floating fixed seat, 323-telescopic pull Rod, 324-telescopic drive member, 325-force spring, 326-fixed guide rod, 33-steel belt side clamping assembly, 34-steel belt horizontal bending assembly, 35-steel belt double bending base, 4-steel belt welding mechanism, 41-welding support seat, 42-Y-axis welding moving assembly, 43-Z-axis welding moving assembly, 44-X-axis welding moving assembly, 45-welding head, 5-steel belt lower bending mechanism, 6-fuel cell stack, 7-steel belt, 71-tensioning hole. DETAILED DESCRIPTION

[0045] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to be able to fully convey the scope of the present disclosure to those skilled in the art. It should be noted that, in the absence of conflict, the embodiments of the present invention and the features described in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0046] Device Example:

[0047] See also Figures 1 to 5, which shows the preferred structure of the steel strip bundling device for fuel cell stacks provided by the embodiment of the present invention. As shown in the figure, the device includes: a pressing fixture mechanism 1, a steel strip positioning mechanism 2, a steel strip double bending mechanism 3, a steel strip welding mechanism 4, and a steel strip lower bending mechanism 5; wherein,

[0048] The pressing fixture mechanism 1 is used to press and fix the fuel cell stack 6 and to press and fix the steel belt on the fuel cell stack 6 .

[0049] Specifically, the pressing fixture mechanism 1 can be used as a fixed support to support the bottom, limit the circumference, and press the fuel cell stack 6, thereby ensuring the stability of the fuel cell stack 6 when the steel belt 7 on the fuel cell stack 6 is tied, avoiding the displacement or tilt of the fuel cell stack 6, etc., thereby ensuring the effectiveness of the steel belt bundling, and can also press the steel belt 7 on the fuel cell stack 6 to avoid deformation or displacement when the steel belt is bent. The steel belt can pass through the gap between the bottom of the fuel cell stack and the pressing fixture mechanism 1. The steel belt is placed on both sides of the fuel cell stack as two steel belt segments, one of which is longer and the other is shorter, and the shorter steel belt segment has a tightening hole 71 near the steel belt head, and the longer steel belt segment can also be provided with a tightening hole 71. The position of the tightening hole 71 can be determined according to actual conditions. For example, the two tightening holes 71 can be symmetrically arranged about the steel belt placed at the bottom of the fuel cell stack. In this embodiment, the width direction of the fuel cell stack can be arranged along the longitudinal direction, i.e., the Y-axis, and the thickness can be arranged along the transverse direction, i.e., the X-axis. A plurality of steel belts need to be bundled along the width direction of the fuel cell stack. In this embodiment, four are used as an example, but other numbers are possible, and there is no limitation on this in this embodiment.

[0050] The steel strip double bending mechanism 3 is arranged on one side of the pressing fixture mechanism 1 (such as Figure 4 The left side of the figure is used to position, vertically tighten and bidirectionally bend the steel belt 7 so that the steel belt passes through the bottom of the fuel cell stack and then bends upward along one side wall of the fuel cell stack 6 (such as Figure 4 The left side wall as shown in the figure extends vertically upward to the top of the fuel cell stack 6, and is horizontally bent again under the action of the horizontal bending force, and extends horizontally along the top wall of the fuel cell stack to the other side of the fuel cell stack, as shown in the figure. Figure 4 The structure shown is a rectangular structure with an opening at the upper right end.

[0051] Specifically, the steel strip double-bending mechanism 3 is arranged on the left side of the pressing fixture mechanism 1, and can be moved to the tightening hole 71 of the left steel section of the steel strip. The tightening hole 71 of the left steel section of the steel strip can be clamped on the steel strip double-bending mechanism 3 to realize the positioning of the steel strip 7; the steel strip double-bending mechanism 3 can also drive the left steel section of the steel strip to lift upward, so that the left steel section of the steel strip can be bent upward from the bottom left corner of the fuel cell stack along the outer wall of the fuel cell stack, so that the left steel section of the steel strip extends upward along the left wall of the fuel cell stack and is pressed to the left wall of the fuel cell stack, realizing vertical tightening and pressing of the steel strip, so that the steel strip is pressed against the left wall of the fuel cell stack; the steel strip double-bending mechanism 3 can also apply horizontal bending force to the steel strip, so that the steel strip is bent to the right along the outer wall of the fuel cell stack at the top left corner of the fuel cell stack, so that the left steel section of the steel strip extends to the right along the top wall of the fuel cell stack, realizing bidirectional bending of the steel strip, and the steel strip is formed as follows Figure 4 The rectangular structure shown is wound around the upper right end of the periphery of the fuel cell stack and has an opening, and the steel belt extends horizontally to the right side of the fuel cell stack so that it can continue to bend downward. After the steel belt extends to the right along the top wall of the fuel cell stack, the steel belt pressed against the top wall of the fuel cell stack can be pressed by the pressing fixture mechanism 1 to achieve the top of the steel belt being pressed. In this embodiment, the steel belt double bending mechanism 3 can be set on the pressing fixture mechanism 1, and the height position can be adjusted when the pressing fixture mechanism 1 is pressed and fixed, so that the steel belt double bending mechanism 3 is moved to a height position suitable for the fuel cell stack.

[0052] The steel strip downward bending mechanism 5 is arranged on the pressing jig mechanism 1, and is used to bend the steel strip extending along the top wall of the fuel cell stack downward so that the steel strip extends vertically downward along the other side wall of the fuel cell stack, so that one steel strip head extends downward.

[0053] Specifically, the steel strip bending mechanism 5 is arranged on the pressing jig mechanism 1, and can be placed on the right side of the pressing jig mechanism 1, so as to apply a downward bending force along the right side wall of the fuel cell stack from top to bottom, so that the steel strip extending horizontally along the top wall of the fuel cell stack can be bent downward along the right side wall of the fuel cell stack, thereby making a steel strip head of the steel strip extend downward along the right side wall of the fuel cell stack. Among them, the driving member of the steel strip bending mechanism 5 can be a cylinder, and the steel strip bending mechanism 5 can be driven by the cylinder to move up and down to apply a downward bending force to the steel strip, so that the steel strip can be bent downward.

[0054] The steel strip positioning mechanism 2 is arranged on the other side of the pressing jig mechanism 1, and is used to position, vertically tighten and weld the steel strip, so that after the steel strip extends from the bottom of the fuel cell stack, it is bent from the other side of the fuel cell stack and extends vertically upward along the other side wall of the fuel cell stack, so that the other steel strip head of the steel strip is pressed against the other side wall of the fuel cell stack, and the two steel strip heads of the steel strip are pressed so that the two steel strip heads of the steel strip are stacked and pressed against the side wall of the fuel cell stack.

[0055] Specifically, the steel belt positioning mechanism 2 is arranged on the right side of the pressing fixture mechanism 1. While the steel belt double bending mechanism 3 positions, vertically tightens and bidirectionally bends the left steel segment of the steel belt, the steel belt positioning mechanism 2 can be moved to the tightening hole 71 of the right steel segment of the steel belt. The tightening hole 71 of the right steel segment of the steel belt can be clamped on the steel belt positioning mechanism 2 to achieve the positioning of the right steel segment of the steel belt; the steel belt positioning mechanism 2 can also drive the right steel segment of the steel belt to lift upward, so that the right steel segment of the steel belt can be bent upward from the right corner of the bottom of the fuel cell stack along the outer wall of the fuel cell stack, so that the right steel segment of the steel belt extends upward along the right wall of the fuel cell stack and is pressed against the right wall of the fuel cell stack, so as to achieve The vertical tension and compression of the steel strip makes the right side steel section of the steel strip pressed against the right side wall of the fuel cell stack, that is, the other steel strip head of the steel strip can extend upward along the right side wall of the fuel cell stack, that is, one steel strip head extends downward from top to bottom along the right side wall of the fuel cell stack, and the other steel strip head extends upward from bottom to top along the right side wall of the fuel cell stack, and there is an overlapping area between the two steel strip heads, and the two steel strip heads are stacked on the right side wall of the fuel cell stack. For the relative positions of the two steel strip heads, there is no limitation in this embodiment, that is, the steel strip head that can extend upward is pressed against the right side wall of the fuel cell stack, and the steel strip head that can extend downward is pressed against the right side wall of the fuel cell stack. In order to ensure the stability of the welding between the two steel strip heads, preferably, the steel strip positioning mechanism 2 can also apply a pressing force to the two stacked steel strip heads, so that the two steel strip heads are stacked and pressed against the right side wall of the fuel cell stack to avoid displacement of the two steel strip heads.

[0056] The steel strip welding mechanism 4 is arranged on the other side of the pressing fixture mechanism 1 (such as Figure 2The right side shown in the figure) is used to weld the two stacked and compressed steel strip heads to complete the bundling of the steel strips. Specifically, the steel strip welding mechanism 4, the steel strip positioning mechanism 2, and the steel strip lower bending mechanism 5 are arranged on the same side of the pressing fixture mechanism 1, and the two stacked steel strip heads are compressed by the steel strip positioning mechanism 2, and the two stacked and compressed steel strip heads are welded by the steel strip welding mechanism 4 to complete the bundling of the steel strips. After completing the bundling of a single steel strip, the actuators of the steel strip double bending mechanism 3, the steel strip welding mechanism 4, and the steel strip positioning mechanism 2 can all be adjusted in the longitudinal position, that is, the position adjustment in the Y-axis direction, so as to bundle other steel strips in turn.

[0057] See also Figure 6 and Figure 7 , which shows the preferred structure of the pressing jig mechanism 1 in the steel belt bundling device for the fuel cell stack provided by the embodiment of the present invention. As shown in the figure, the pressing jig mechanism 1 includes: an electric push positioning assembly 11 and a top pressing assembly 12; wherein the electric push positioning assembly 11 is used to support and limit the bottom of the fuel cell stack; the top pressing assembly 12 is arranged directly above the electric push positioning assembly 11, and is used to top press the fuel cell stack on the electric push positioning assembly 11, and top press the steel belt pressed against the top wall of the fuel cell stack, so as to facilitate the bundling of the steel belt.

[0058] Specifically, the electric push positioning assembly 11 can be arranged on the working surface to provide bottom support and circumferential limit to the fuel cell stack to avoid displacement of the fuel cell stack. The top pressing assembly 12 is arranged directly above the electric push positioning assembly 11. The top pressing assembly 12 is used to press the fuel cell stack, so that the fuel cell stack is positioned up and down and circumferentially, and the fuel cell stack is completely positioned. The top pressing assembly 12 can also top press the steel belt extending along the top wall of the fuel cell stack, that is, the steel belt extending along the top wall of the fuel cell stack is clamped between the fuel cell stack and the top pressing assembly 12, so as to facilitate the bending of the steel belt extending horizontally along the top wall of the fuel cell stack, especially bending downward to extend along the side wall of the fuel cell stack.

[0059] In one implementation of this embodiment, the electric push positioning assembly 11 is a fixed structure, which can be fixedly installed directly below the top pressing assembly 12 to provide bottom support and circumferential limitation for the fuel cell stack.

[0060] In another implementation of this embodiment, Figure 2As shown, the electric push positioning assembly 11 can be a mobile structure, which can drive the fuel cell stack to move laterally, that is, move in the x-axis direction, so that the fuel cell stack can move between the loading position and the bundling position, so as to facilitate the loading, unloading and bundling of the fuel cell stack; the top pressing assembly 12 is arranged directly above the mobile electric push positioning assembly 11 in the bundling position. Specifically, the mobile electric push positioning assembly 11 is arranged on the working surface, which can support the bottom and limit the circumferential position of the fuel cell stack to avoid the displacement of the fuel cell stack. At the same time, it can also be a mobile assembly that can drive the top-supported fuel cell stack to move laterally, so that the fuel cell stack can move to the left with the mobile electric push positioning assembly 11 to the loading and unloading position (such as Figure 2 left position as shown), and can also be moved to the right to the bundling position (as shown Figure 2 The right side position shown in the figure), in the embodiment, the mobile electric push positioning assembly 11 and the fuel cell stack are two respectively placed in the loading and unloading position and the bundling position. In actual application, there is only one. The two in the figure only show two positions respectively, not two positions with fuel cell stacks at the same time. The electric push positioning assembly 11 moves to the loading and unloading position, and the fuel cell stack to be bundled can be installed on the electric push positioning assembly 11 by hoisting, and the fuel cell stack to be bundled is driven by the electric push positioning assembly 11 to move to the bundling position, so that the top pressing assembly 12 is used at the bundling position for top pressing, and the steel belt positioning mechanism 2, the steel belt double bending mechanism 3, and the steel belt lower bending mechanism 5 are used for bending, and the steel belt is welded by the steel belt welding mechanism 4 to complete the bundling of the steel belt; finally, after the top pressing assembly 12 releases the top pressing, the mobile electric push positioning assembly 11 drives the fuel cell stack to return to its position, that is, moves to the left to the loading and unloading position, and the bundled fuel cell stack is unloaded to carry out the subsequent bundling of the fuel cell stack.

[0061] Continue to see Figure 6, the electric push positioning assembly 11 includes: an electric push carrier 111, a circumferential limiter 112 and a carrier support seat 113; wherein, the electric push carrier 111 is provided with a circumferential limiter 112, and the electric push carrier 111 is used to support the bottom of the fuel cell stack, and the fuel cell stack is circumferentially limited by the circumferential limiter 112. Specifically, a carrier support seat 113 is provided at the bottom of the electric push carrier 111 to support the electric push carrier 111 through the carrier support seat 113. In one implementation of the present embodiment, the carrier support seat 113 can be fixed on a working surface or the ground to fix and support the electric push carrier 111 above, and support the fuel cell stack through the electric push carrier 111, that is, the fuel cell stack can be placed vertically on the electric push carrier 111. There may be multiple circumferential limiters 112, which are fixedly mounted on the top wall of the electric push carrier 111. There are at least four circumferential limiters 112, which can limit the four side walls of the fuel cell stack respectively. In this embodiment, there are six circumferential limiters 112, and the side walls on both sides of the fuel cell stack in the width direction are limited by two circumferential limiters 112, and the side walls on both sides in the thickness direction are limited by one circumferential limiter 112, so as to limit the circumference of the fuel cell stack, so that the fuel cell stack is completely fixed between the six circumferential limiters 112. In this embodiment, a hoisting member 114 may be provided on the electric push carrier 111, which is used to hoist the electric push carrier 111 so as to hoist the fuel cell stack.

[0062] exist Figure 2 In another embodiment shown, the carrier support seat 113 is a sliding support seat, which can slide and support the electric push carrier 111, that is, the electric push carrier 111 is arranged on the carrier support seat 113 in a sliding manner in the horizontal direction to drive the fuel cell stack to move horizontally. In order to realize the lateral movement of the electric push carrier 111, preferably, the electric push carrier 111 can be connected to a lateral conveying member (not shown in the figure), so that the electric push carrier 111 can move horizontally under the action of the lateral conveying member, thereby driving the fuel cell stack to move horizontally, so that the fuel cell stack can move horizontally to the bundling position for steel belt bundling, and can also move to the loading and unloading position on one side of the bundling position to install and unload the fuel cell stack. Specifically, the lateral conveying member serves as a lateral movement driving member, which can drive the electric push carrier 111 to slide horizontally. Among them, the lateral conveying member can be a linear screw slide group, which can convert the rotation of the motor into the lateral reciprocating motion of the electric push carrier 111 to realize the lateral movement of the electric push carrier 111. In this embodiment, the electric push carrier 111 can be placed on a slide plate of a linear screw slide group and can move laterally with the slide plate.

[0063] Continue to see Figure 1 , Figure 2 , Figures 6 to 9The top pressing assembly 12 includes: a pressing support seat 121, a stack pressing piece 122 and a steel belt pressing piece 123; wherein the stack pressing piece 122 is arranged on the pressing support seat 121 in a position-adjustable manner along the height direction, and is used for top pressing the fuel cell stack on the electric push carrier 111; the steel belt pressing piece 123 is arranged on the stack pressing piece 122, and is used for top pressing the steel belt that is pressed against the top wall of the fuel cell stack.

[0064] Specifically, the pressing support seat 121 is a support seat structure, which can provide sliding support for the battery stack pressing piece 122; wherein, the bottom of the pressing support seat 121 has two bottom fixing seats 1211, which are respectively placed on both sides of the Y-axis direction of the carrier support seat 113, wherein the pressing support seat 121 and the carrier support seat 113 can be fixedly connected by welding or other means, and can also be an integrated structure; each bottom fixing seat 1211 is provided with two guide rods 1212, that is, there are four guide rods 1212 in total, which respectively guide and support the four corners of the battery stack pressing piece 122; the tops of the four guide rods 1212 are also fixedly connected to the top support seat 1213, and the top support seat 1213 can be provided with a lifting ear 1214, so that the device can be hoisted as a whole. The stack press 122 is arranged on the press support seat 121 in a position-adjustable manner along the height direction, i.e., the Z-axis direction. In particular, sliding sleeves may be provided at the four corners of the stack press 122, and the sliding sleeves may be slidably mounted on the guide rod 1212 to slide up and down along the guide rod 1212 to achieve position adjustment, so that after the fuel cell stack is installed and moved into place, i.e., moved to the bundling position, the stack press 122 may slide downward until the bottom wall of the stack press 122 is pressed against the top wall of the fuel cell stack to achieve top pressing of the fuel cell stack; the stack press 122 may also slide upward after the fuel cell stack is bundled to make way for unloading of the fuel cell stack. The steel belt press 123 is arranged on the stack press 122, and can slide up and down with the stack press 122. After the stack press 122 slides downward and the bottom wall is pressed and contacted on the top wall of the fuel cell stack, the steel belt can be bent on the fuel cell stack, so that the steel belt can extend horizontally along the top wall of the fuel cell stack. The steel belt press 123 can apply a pressing force to the steel belt, so that the steel belt is pressed between the top wall of the fuel cell stack and the steel belt press 123, thereby achieving top pressing of the steel belt pressed and contacted on the top wall of the fuel cell stack, avoiding displacement and warping of the steel belt during the bending process.

[0065] Continue to see Fig. 9A U-shaped groove structure 1221 is provided at the bottom of the stack press 122, and the solid part of the stack press 122 is used to be pressed on the top wall of the fuel cell stack. The U-shaped groove structure 1221 is used to make way for the steel belt so that the steel belt can extend horizontally along the top wall of the fuel cell stack in the U-shaped groove structure 1221; the steel belt press 123 is arranged in the U-shaped groove structure 1221 to apply a pressing force to the steel belt after the steel belt extends horizontally along the top wall of the fuel cell stack, so that the steel belt is pressed between the top wall of the fuel cell stack and the steel belt press 123. Specifically, the cross section of the stack press 122 can be a square structure that matches the cross section of the fuel cell stack, and a U-shaped groove structure 1221 is provided at the bottom of the stack press 122 as a clearance groove, so that after the steel belt is bent from one side, the steel belt can extend horizontally to the other side along the top wall of the fuel cell stack. Therefore, the stack press 122 can not only press the top of the fuel cell stack, but also make way for the steel belt to achieve the upper bending and horizontal extension of the steel belt. The steel belt press 123 is arranged in the U-shaped groove structure 1221 to apply a pressing force to the steel belt after the steel belt extends horizontally along the top wall of the fuel cell stack, so that the steel belt is pressed between the top wall of the fuel cell stack and the steel belt press 123. Among them, the position and number of the U-shaped groove structure 1221 are adapted to the position and number of the steel belts required to be tied on the fuel cell stack. In this embodiment, there are four U-shaped groove structures 1221.

[0066] In this embodiment, there may be multiple, for example four, steel belt bending mechanisms 5, which are respectively arranged on one side of the corresponding position of the corresponding U-shaped groove structure 1221, and the steel belt can be bent and extended in the U-shaped groove. After being pressed by the steel belt pressing piece 123, the steel belt bending mechanism 5 bends the steel belt extending along the top wall of the fuel cell stack downward; of course, the steel belt bending mechanism 5 can also be one, for example, it can be moved on the stack pressing piece 122 along the width direction of its U-shaped groove structure 1221 to perform downward bending on the corresponding steel belt.

[0067] Continue to see Figures 6 to 9 The stack press 122 is provided with a press-fit positioning structure 124, which is used to limit the relative position between the stack press 122 and the electric push positioning assembly 11 when the stack press 122 moves up and down to the right position, so as to achieve the precise positioning of the stack press 122. Specifically, the press-fit positioning structure 124 can be arranged between the stack press 122 and the circumferential limiter 112, and by limiting the relative position of the stack press 122 and the circumferential limiter 112, when the stack press 122 is pressed on the fuel cell stack, the stack press 122 and the fuel cell stack are completely aligned, that is, the stack press 122 is completely flush with the surrounding walls of the fuel cell stack, thereby achieving the precise positioning of the stack press 122.

[0068] Continue to see Fig. 9 The steel belt pressing member 123 may include: a vertical telescopic driving member 1231 and a steel belt pressing body 1232; wherein the steel belt pressing body 1232 is arranged at the telescopic end of the vertical telescopic driving member 1231, and is used for moving vertically downward under the action of the vertical telescopic driving member 1231 after the steel belt is bent again and horizontally extended along the top wall of the fuel cell stack, until it is pressed against the top wall of the steel belt, so that the steel belt is pressed against the top wall of the fuel cell stack.

[0069] Specifically, the fixed end of the vertical telescopic driving member 1231 (such as Fig. 9 The top of the stack press 122 can be fixedly mounted on the stack press 122. The vertical telescopic drive 1231 is vertically arranged in the U-shaped groove structure 1221 of the stack press 122 and can perform vertical telescopic movement. The steel belt pressing body 1232 is arranged in the U-shaped groove structure 1221 in a manner that it can move up and down. The steel belt pressing body 1232 is arranged at the telescopic end of the vertical telescopic drive 1231 (as shown in FIG. Fig. 9 The bottom end shown in the figure) is used for the steel belt to move vertically downward under the action of the vertical telescopic driving member 1231 after the steel belt extends horizontally along the top wall of the fuel cell stack, until it presses against the top wall of the steel belt, so that the steel belt is pressed against the top wall of the fuel cell stack, that is, the steel belt is clamped between the steel belt pressing body 1232 and the top wall of the fuel cell stack. The steel belt pressing plate can be a plate-like structure or other structures, and this embodiment does not impose any limitation on it.

[0070] In this embodiment, the pressing and positioning structure 124 includes vertical positioning columns 1241 corresponding to the circumferential limiting members 112 one by one; wherein the vertical positioning columns 1241 are arranged around the stack pressing member 122 along the circumference of the stack pressing member 122, and a positioning groove is provided at the top of the circumferential limiting member 112, which is adapted to the vertical positioning columns 1241 and is used to position the stack pressing member 122. Specifically, there may be six vertical positioning columns 1241 and they are arranged around the stack pressing member 122 corresponding to the circumferential limiting members 112 one by one, and when the stack pressing member 122 slides into place, the vertical positioning columns 1241 can be respectively inserted into the positioning grooves of the corresponding circumferential limiting members 112 to accurately position the stack pressing member 122.

[0071] See also Figures 10 to 13 , which shows the preferred structure of the steel strip double bending mechanism 3 provided by the embodiment of the present invention. As shown in the figure, the steel strip double bending mechanism 3 may include: a first three-dimensional moving component 31, a first steel strip positioning and tightening component 32, a steel strip side pressing component 33 and a steel strip horizontal bending component 34; wherein,

[0072] The first steel belt positioning and tightening assembly 32 is arranged on the power output end of the first three-dimensional moving assembly 31. The first steel belt positioning and tightening assembly 32 is used to be clamped in the tightening hole 71 of the steel belt to realize the positioning of the steel belt, and can drive the steel belt to be tightened upward into place under the action of the first three-dimensional moving assembly 31, so that the bottom of the steel belt is bent upward and extends upward along the side wall of the fuel cell stack. The steel belt side pressing assembly 33 is arranged on the power output end of the first three-dimensional moving assembly 31 and located above the first steel belt positioning and tightening assembly 32, and is used to press the steel belt after the steel belt is tightened upward into place, so that the steel belt extends upward and presses against the side wall of the fuel cell stack. The steel belt horizontal bending assembly 34 is arranged on the power output end of the first three-dimensional moving assembly 31 and located above the steel belt side pressing assembly 33, and is used to apply a horizontal bending force to the steel belt after the steel belt is pressed onto the side wall of the fuel cell stack, so that the steel belt is horizontally bent and extends horizontally along the top wall of the fuel cell stack.

[0073] Specifically, the steel belt double bending mechanism 3 may also be provided with a steel belt double bending base 35, which may be fixedly mounted on the top wall of the stack press 122, and adjusted up and down with the stack press 122, so that when the stack press 122 presses the top of the fuel cell stack, the steel belt double bending mechanism 3 as a whole moves downward to its place, so that the distance between the steel belt double bending mechanism 3 as a whole and the fuel cell stack is reduced. The fixed portion of the first three-dimensional moving component 31 may be fixedly mounted on the steel belt double bending base 35, so as to adjust the three-dimensional position of the first steel belt positioning and tensioning component 32, the steel belt side clamping component 33 and the steel belt horizontal bending component 34. The first steel belt positioning and tensioning assembly 32, the steel belt side pressing assembly 33 and the steel belt horizontal bending assembly 34 are arranged on the power output end of the first three-dimensional moving assembly 31 in sequence from bottom to top, and the execution parts of the first steel belt positioning and tensioning assembly 32, the steel belt side pressing assembly 33 and the steel belt horizontal bending assembly 34 are all facing the same side (such as Fig.10 The right end as shown in the figure) is used to perform corresponding operations on the steel belt located on the same side of the first steel belt positioning and tensioning component 32, the steel belt side clamping component 33 and the steel belt horizontal bending component 34, that is, the first steel belt positioning and tensioning component 32 is clamped in the tensioning hole 71 of the steel belt to realize the positioning of the steel belt, and can drive the steel belt to be tightened upward into place under the action of the first three-dimensional moving component 31, so that the bottom of the steel belt is bent upward, that is, an L-shaped structure is formed, and it extends upward along the side wall of the fuel cell stack to realize the positioning and bending of a steel section of the steel belt; the steel belt side clamping component 33 and the steel belt horizontal bending component 34 move into place with the first steel belt positioning and tensioning component 32 under the action of the first three-dimensional moving component 31, and can move to Figure 4At the position shown, the steel belt extending upward along the side wall of the fuel cell stack is laterally compressed by the steel belt side compression assembly 33, so that the steel belt extending upward along the side wall of the fuel cell stack is clamped between the fuel cell stack and the steel belt side compression assembly 33, thereby realizing the compression of the side of the steel belt; the height of the actuator of the steel belt horizontal bending assembly 34 is adapted to the height of the top wall of the fuel cell stack, and the actuator of the steel belt horizontal bending assembly 34 can apply a horizontal bending force to the steel belt extending upward, so that the steel belt can be horizontally bent under the support limit of the fuel cell stack and the horizontal bending force, and then extend horizontally along the top wall of the fuel cell stack after bending.

[0074] In this embodiment, the movement on the X-axis can realize the adjustment of the distance between the steel belt side clamping assembly 33, the steel belt horizontal bending assembly 34, the first steel belt positioning and tensioning assembly 32 and the side of the fuel cell stack, and the movement on the Z-axis can realize the adjustment of the height direction of the steel belt side clamping assembly 33, the steel belt horizontal bending assembly 34, and the first steel belt positioning and tensioning assembly 32, so that the steel belt can be hung on the first steel belt positioning and tensioning assembly 32 through the movement on the X-axis and Z-axis, and pulled upward and moved toward the side of the fuel cell stack, so that the steel belt extends upward along the side wall of the fuel cell stack to laterally compress and horizontally bend the steel belt; the movement on the Y-axis can realize the position adjustment of the steel belt side clamping assembly 33, the steel belt horizontal bending assembly 34, and the first steel belt positioning and tensioning assembly 32 on the Y-axis, so as to move to the corresponding positions of different steel belts to perform corresponding operations on each steel belt.

[0075] In this embodiment, the driving parts of the steel belt side clamping assembly 33, the steel belt horizontal bending assembly 34 and / or the first steel belt positioning and tightening assembly 32 are all cylinders. Specifically, the actuator of the first steel belt positioning and tightening assembly can be a telescopic pull rod 323, which is arranged on the power output end of the first three-dimensional moving assembly 31 in a telescopic manner along the horizontal direction, and the telescopic pull rod 323 can be driven by the cylinder to be extended and retracted, so that it can be fixed in the tightening hole 71 of the steel belt and can be retracted from the tightening hole 71 to release the positioning connection of the steel belt. The actuator of the steel belt side clamping assembly 33 can be a vertically arranged clamping plate structure, which is arranged on the power output end of the first three-dimensional moving assembly 31 in a position-adjustable manner along the horizontal direction, so that after the first steel belt positioning and tightening assembly 32 tightens and bends the steel belt into place, the clamping plate structure is driven by the cylinder to move horizontally to press against the side wall of the steel belt, so that the steel belt is clamped between the clamping plate structure and the side wall of the fuel cell stack. The actuator of the steel belt horizontal bending assembly 34 can be a horizontally arranged strip structure, which is arranged on the power output end of the first three-dimensional moving assembly 31 in a position-adjustable manner along the horizontal direction, so that after the first steel belt positioning and tensioning assembly 32 tightens and bends the steel belt into place, and the steel belt is clamped between the clamping plate structure and the side wall of the fuel cell stack, the cylinder drives the strip structure to move horizontally to apply a horizontal bending force to the steel belt, so that the vertically extending steel belt is horizontally bent under the action of the horizontal bending force, and extends horizontally along the top wall of the fuel cell stack under the action of the strip structure. Among them, the cylinder is connected to a solenoid valve, so that the solenoid valve is pneumatically controlled to achieve drive control.

[0076] Continue to see Figures 10 to 16 The first three-dimensional moving component 31 may include: an X-axis bending moving part 311, a Y-axis bending moving part 312, and a Z-axis bending moving part 313; wherein the Y-axis bending moving part 312 is arranged on the X-axis bending moving part 311, and is used to move along the X-axis with the output end of the X-axis bending moving part 311; the Z-axis bending moving part 313 is arranged on the Y-axis bending moving part 312, and is used to move along the Y-axis with the output end of the Y-axis bending moving part 312, and drives the power output end of the Z-axis bending moving part 313, namely the Z-axis slide 3133, to move along the Z-axis, so as to realize the three-dimensional movement of the actuator on the support seat.

[0077] Specifically, the fixed part of the X-axis bending moving member 311 is fixedly mounted on the steel belt double bending base 35, and can be used as an X-axis movement drive. The fixed part of the Y-axis bending moving member 312 can be fixedly mounted on the execution part of the X-axis bending moving member 311, that is, the power output end, and can be driven by the X-axis movement as a whole under the driving action of the X-axis bending moving member 311, and can be used as a Y-axis movement drive. The fixed part of the Z-axis bending movable member 313 can be fixedly installed on the actuator, i.e., the power output end, of the Y-axis bending movable member 312. It can move along the X-axis as a whole under the driving action of the X-axis bending movable member 311, and can move along the Y-axis as a whole under the driving action of the Y-axis bending movable member 312 to realize XY-axis movement. It can also be used as a Z-axis motion drive to drive the steel belt side clamping assembly 33, the steel belt horizontal bending assembly 34, and the first steel belt positioning and tensioning assembly 32 to move along the Z-axis to realize the three-dimensional movement of the steel belt side clamping assembly 33, the steel belt horizontal bending assembly 34, and the first steel belt positioning and tensioning assembly 32. In this embodiment, a Z-axis fixed plate 314 may be provided on the power output end of the Y-axis bending movable member 312, which is used to support and fix the Z-axis bending movable member 313. Under the coordinated action of the X-axis bending movable member 311 and the Y-axis bending movable member 312, the Z-axis fixed plate 314 can be moved in the XY axis, that is, the position on the horizontal plane can be adjusted, and the Z-axis bending movable member 313 set on the Z-axis fixed plate 314 can be driven to adjust its position horizontally.

[0078] In this embodiment, the X-axis bending movable part 311 can be a screw slider mechanism; the Y-axis bending movable part 312 can be a linear moving module; the Z-axis bending movable part 313 can be a screw slider mechanism. Of course, the X-axis bending movable part 311, the Y-axis bending movable part 312, and the Z-axis bending movable part 313 can also be other linear module sliders, and no limitation is made to them in this embodiment.

[0079] Continue to see Figures 14 to 16The X-axis bending moving member 311 includes: an X-axis driving motor 3111, an X-axis moving lead screw 3112, an X-axis moving slider 3113, and an X-axis driven slider 3114; wherein the X-axis moving lead screw 3112 is connected to the X-axis driving motor 3111; the X-axis moving slider 3113 is slidably arranged on the steel belt double bending base 35 along the X-axis, and the X-axis moving slider 3113 is also connected to the X-axis moving lead screw 3112 to form a lead screw slider mechanism for moving the X-axis driving motor 3111. The output rotation of 111 is converted into the movement of the X-axis moving slider 3113 along the X-axis; the X-axis driven slider 3114 is slidably arranged on the steel belt double bending base 35 along the X-axis and is placed on one side of the X-axis moving slider 3113, the X-axis moving slider 3113 and the X-axis driven slider 3114 respectively support the two ends of the Y-axis bending moving member 312, and are used to drive the X-axis driven slider 3114 and the Y-axis bending moving member 312 to move synchronously under the action of the X-axis moving slider 3113. Specifically, the X-axis driving motor 3111 can be fixedly mounted on the steel belt double bending base 35, and the X-axis moving lead screw 3112 is rotatably arranged on the steel belt double bending base 35 along the X-axis. The X-axis moving lead screw 3112 is connected to the X-axis driving motor 3111 and can rotate under the driving action of the X-axis driving motor 3111; the X-axis moving slider 3113 is sleeved on the X-axis moving lead screw 3112, and the two form a ball screw structure to convert the rotation of the X-axis moving lead screw 3112 into movement of the X-axis moving slider 3113 along the X-axis; the X-axis moving slider 3113 and the X-axis driven slider 3114 are respectively connected to the two ends of the Y-axis bending moving member 312, so that under the movement of the X-axis moving slider 3113, the X-axis driven slider 3114 and the Y-axis bending moving member 312 are driven to perform synchronous X-axis movement to achieve position adjustment on the X-axis.

[0080] In this embodiment, the Y-axis bending moving member 312 is a linear module, which is connected to a Y-axis driving motor 312 to drive the linear module to move, thereby achieving Y-axis movement.

[0081] See also Figures 17 to 20, which shows the preferred structure of the Z-axis bending moving member 313, the steel belt side clamping assembly 33, the steel belt horizontal bending assembly 34 and the first steel belt positioning and tensioning assembly 32 provided in the embodiment of the present invention. As shown in the figure, the Z-axis bending moving member 313 includes: a Z-axis driving motor 3131, a Z-axis moving screw rod 3132 and a Z-axis slide 3133; wherein the Z-axis moving screw rod 3132 is connected to the Z-axis driving motor 3131; the Z-axis slide 3133 is slidably arranged on the power output end of the Y-axis bending moving member 312 along the Z-axis, and the Z-axis slide 3133 is also connected to the Z-axis moving screw rod 3132 to form a screw slider mechanism, which is used to convert the output rotation of the Z-axis driving motor 3131 into the movement of the Z-axis slide 3133 relative to the power output end of the Y-axis bending moving member 312 along the Z-axis.

[0082] Specifically, the Z-axis driving motor 3131 can be fixedly mounted on the Z-axis fixing plate 314, and the Z-axis slide 3133 is slidably arranged on the Z-axis fixing plate 314 along the Z-axis. In this embodiment, a Z-axis guide rail 3134 is arranged on the power output end of the Y-axis bending moving member 312, that is, a Z-axis guide rail 3134 can be arranged on the Z-axis fixing plate 314, and there can be two Z-axis guide rails 3134, which can respectively guide the sliding of the Z-axis slide 3133 at both ends. The Z-axis moving screw rod 3132 is rotatably placed between the two Z-axis guide rails 3134, and the Z-axis driving motor 3131 is connected to the Z-axis moving screw rod 3132, and is used to drive the Z-axis moving screw rod 3132 to rotate. The Z-axis slide 3133 is sleeved on the Z-axis moving lead screw 3132 to form a lead screw slider mechanism to convert the output rotation of the Z-axis driving motor 3131 into a reciprocating linear motion of the Z-axis slide 3133 along the Z-axis guide rail 3134. The Z-axis slide 3133 may be an L-shaped support seat, whose vertical support plate is slidably connected to the Z-axis guide rail 3134 along the length direction of the Z-axis guide rail 3134, the fixed parts of the steel belt side clamping assembly 33 and the steel belt horizontal bending assembly 34 may be fixedly mounted on the vertical support plate and placed above the horizontal support plate of the Z-axis slide 3133, the first steel belt positioning and tensioning assembly 32 may be placed below the horizontal support plate of the Z-axis slide 3133, and the fixed part of the first steel belt positioning and tensioning assembly 32 may be fixedly mounted on the horizontal support plate of the Z-axis slide 3133 to drive the steel belt side clamping assembly 33, the steel belt horizontal bending assembly 34, and the first steel belt positioning and tensioning assembly 32 to perform three-dimensional position adjustment. In this embodiment, the Z-axis driving motor 3131 and the Z-axis moving screw 3132 can be connected through a transmission member 3135 to drive the Z-axis moving screw 3132 to rotate. The transmission member 3135 can be a synchronous belt to drive the Z-axis moving screw 3132 to rotate synchronously with the Z-axis driving motor 3131.

[0083] See also Figure 21 to Figure 23, which shows the preferred structure of the first steel belt positioning and tensioning assembly 32 provided by the embodiment of the present invention. As shown in the figure, the first steel belt positioning and tensioning assembly 32 includes: a tensioning head fixing seat 321, a floating fixing seat 322, a telescopic pull rod 323 and a telescopic driving member 324; wherein the floating fixing seat 322 is movably arranged on the tensioning head fixing seat 321 along the z-axis, and a force spring 325 is arranged between the floating fixing seat 322 and the tensioning head fixing seat 321; the telescopic pull rod 323, the telescopic pull rod 323 is arranged on the floating fixing seat 322 in a telescopic manner , which is used to extend and penetrate into the tightening hole 71 of the steel belt when positioning, tightening and bending the steel belt, so as to pull the steel belt upward and tighten it. After the steel belt is tightened, the steel belt applies a pulling force to the telescopic rod 323, so that the telescopic rod 323 and the floating fixed seat 322 float along the z-axis, and under the action of the force spring 325, the telescopic rod 323 applies a constant z-axis tension to the steel belt; and after the steel belt is tightened and bent into place, the telescopic rod 323 can retract to release the tightening and positioning of the steel belt.

[0084] Specifically, the tension head fixing seat 321 can be a basic support seat, and its top wall can be fixedly connected to the bottom wall of the horizontal support plate of the Z-axis slide 3133 to drive the first steel belt positioning and tensioning assembly 32 to perform three-dimensional position adjustment as a whole. Among them, the tension head fixing seat 321 is provided with a mounting hole, and the mounting hole is adapted to the floating fixing seat 322. The floating fixing seat 322 is installed in the mounting hole, and the floating fixing seat 322 is arranged in the mounting hole in a manner that it can float up and down along the height direction, i.e., the Z-axis. In this embodiment, in order to improve the stability of the up and down floating of the floating fixed seat 322, preferably, a fixed guide rod 326 is vertically arranged and extended into the mounting hole on the tensioning head fixed seat 321, and an oil-free bushing (not shown in the figure) is provided on the floating fixed seat 322. The oil-free bushing can be slidably mounted on the fixed guide rod 326 to guide the up and down floating of the floating fixed seat 322, that is, the fixed guide rod 326 and the oil-free bushing cooperate to make the floating fixed seat 322 only move in the up and down direction relative to the tensioning head fixed seat 321, so that the floating fixed seat 322 and the telescopic rod 323 can float up and down. The telescopic driving member 324 can be fixedly mounted on the floating fixed seat 322. The floating fixed seat 322 is provided with a clearance hole. The telescopic pull rod 323 is arranged at the clearance hole in a telescopic manner so that it can be extended to the outside of the floating fixed seat 322 to be clamped into the tightening hole 71 of the steel belt to achieve the positioning of the steel belt. It can also be retracted to the inside of the floating fixed seat 322 to release the positioning of the steel belt and achieve the release of the steel belt. At the same time, a force spring 325 is connected between the tensioning head fixed seat 321 and the floating fixed seat 322 to form a flexible connection. The flexible connection can compensate for the errors caused by processing the pulling hole and the Z-axis displacement. At the same time, when the tensioning head fixed seat 321 moves with the Z-axis slide 3133, it can drive the first steel belt positioning and tensioning assembly 32 to move as a whole, and drive the steel belt fixed by the telescopic rod 323 to adjust the position. After the steel belt is lifted up to a certain position, the steel belt will apply a vertical reaction force to the telescopic rod 323 to make the floating fixed seat 322 float, thereby causing the force spring 325 to deform and apply a force to the floating fixed seat 322. The telescopic rod 323 can adjust the tension applied to the steel belt, so that the tension of each group of steel belts is consistent.

[0085] In this embodiment, the telescopic pull rod 323 is connected to a telescopic driving member 324, which is used to drive the telescopic pull rod 323 to extend and penetrate into the tensioning hole 71 of the steel belt when the steel belt is positioned, tightened and bent, and to drive the telescopic pull rod 323 to retract after the steel belt is tightened and bent in place to release the positioning of the steel belt. The telescopic driving member 324 can be a cylinder.

[0086] Continue to see Figure 3 and Figure 4The steel belt positioning mechanism 2 includes: a second three-dimensional moving component 21, a second steel belt positioning and tightening component 22, and a steel belt welding and clamping component; wherein the second steel belt positioning and tightening component 22 is arranged on the power output end of the second three-dimensional moving component 21, and is used to move under the action of the second three-dimensional moving component 21, so that the second steel belt positioning and tightening component can be clamped in the tightening hole 71 of the steel belt, thereby realizing the positioning of the steel belt, and can drive the steel belt to be tightened upward into place under the action of the second three-dimensional moving component 21, so that the bottom of the steel belt is bent upward and extends upward along the side wall of the fuel cell stack, and the first steel belt head of the steel belt is pressed against the side wall of the fuel cell stack; the steel belt welding and clamping component is arranged on the power output end of the second three-dimensional moving component 21 and is located above the second steel belt positioning and tightening component 22, and is used to weld and clamp the two steel belt heads of the steel belt when the two steel belt heads of the steel belt are stacked on the side wall of the fuel cell stack, so that the two steel belt heads of the steel belt are pressed against the side wall of the fuel cell stack.

[0087] Specifically, the structures of the second three-dimensional moving assembly 21 and the second steel belt positioning and tensioning assembly 22 can refer to the first three-dimensional moving assembly 31 and the first steel belt positioning and tensioning assembly 32, which will not be described in detail here. The steel belt welding and clamping assembly may include a driving telescopic cylinder and a welding pressure head arranged at the telescopic end of the driving telescopic cylinder, and the welding pressure head may be driven by the driving telescopic cylinder to move horizontally to press the two stacked steel belt heads to the side wall of the fuel cell stack, so that the steel belt welding mechanism 4 can move to the welding pressure head for welding.

[0088] See also Fig.24 , which is a structural schematic diagram of a steel strip welding mechanism 4 provided by an embodiment of the present invention. As shown in the figure, the steel strip welding mechanism 4 includes: a welding support seat 41, a Y-axis welding moving assembly 42, a Z-axis welding moving assembly 43, and an X-axis welding moving assembly 44; wherein the Y-axis welding moving assembly 42 is arranged on the welding support seat 41; the Z-axis welding moving assembly 43 is arranged on the Y-axis welding moving assembly 42, and is used for performing Y-axis movement on the Y-axis welding moving assembly 42 to move to the longitudinal position of the corresponding steel strip; the X-axis welding moving assembly 44 is arranged on the Z-axis welding moving assembly 43, and a welding head 45 is provided on the X-axis welding moving assembly 44, and is used for performing three-dimensional movement under the action of the Y-axis welding moving assembly 42, the Z-axis welding moving assembly 43 and the X-axis welding moving assembly 44, so that the welding head 45 moves to the position where the two steel strip heads of the corresponding steel strip are stacked and pressed, so as to weld the two steel strip heads. Specifically, the Y-axis welding moving assembly 42, the Z-axis welding moving assembly 43, and the X-axis welding moving assembly 44 can all be linear modules, or screw slider modules, which can realize linear drive, and then realize three-dimensional position adjustment of the welding head 45, so as to move to the two steel strip heads for welding.

[0089] The working principle of the steel belt bundling device for fuel cell stacks is as follows: first, the electric push carrier 111 can be driven by a screw rod to move laterally to the loading position, the fuel cell stack can be installed on the electric push carrier 111, and the circumferential limiter 112 can be used to limit the circumference, and the electric push carrier 111 can be driven by a screw rod to move laterally to the bundling position, and the stack pressing piece 122 can be driven to move downward until the bottom wall of the stack pressing piece 122 abuts against the top wall of the fuel cell stack to achieve the top pressing of the fuel cell stack, and the steel belt can be passed through the gap between the fuel cell stack and the electric push carrier 111 to form Figure 3 The shape shown; the steel belt side clamping assembly 33, the steel belt horizontal bending assembly 34 and the first steel belt positioning and tightening assembly 32 are driven to move to the corresponding longitudinal position of the steel belt through the Y-axis bending moving member 312, and the steel belt side clamping assembly 33, the steel belt horizontal bending assembly 34 and the first steel belt positioning and tightening assembly 32 are driven to move to the tightening hole 71 of the steel belt through the X-axis bending moving member 311 and the Z-axis bending moving member 313, and the telescopic pull rod 323 is driven to extend through the telescopic driving member 324 so that the telescopic pull rod 323 is clamped into the tightening hole 71 of one steel belt segment of the steel belt; similarly, the telescopic pull rod 323 of the second steel belt positioning and tightening assembly 22 of the steel belt positioning mechanism 2 is clamped into the tightening hole 71 of another steel belt segment of the steel belt; the first steel belt positioning and tightening assembly 32 is driven upward and rightward (relative to the tightening hole 71 of the steel belt segment) through the X-axis bending moving member 311 and the Z-axis bending moving member 313 Figure 4 The left side of the steel belt is moved upward (with respect to the position shown in the figure), the steel belt is tightened, and the left side of the steel belt is moved toward the fuel cell stack, that is, toward the right, so that the bottom of the left side of the steel belt is bent and extends upward along the left side wall of the fuel cell stack. The steel belt is pressed by the steel belt side clamping assembly 33 so that the inner frame of the steel belt can be well attached to the outer side of the stack product. The steel belt horizontal bending assembly 34 applies a horizontal bending force to the steel belt so that the steel belt is horizontally bent and extends horizontally along the top wall of the fuel cell stack. Similarly, the second steel belt positioning and tensioning assembly 22 is used to move the left side of the steel belt upward (with respect to the top wall of the fuel cell stack) and the left side of the steel belt is bent and extends horizontally along the top wall of the fuel cell stack. Figure 4 The right side of the steel belt is moved upward to lift the right side of the steel belt, tighten the steel belt, and move toward the fuel cell stack, that is, to the left, so that the bottom of the right side of the steel belt is bent and extends upward along the right side wall of the fuel cell stack to form a Figure 4 The shape shown; the steel belt pressing body 1232 is driven downward by the vertical telescopic driving member 1231 to press the steel belt on the top wall of the fuel cell stack; the steel belt lower bending mechanism 5 applies a downward bending force to the steel belt along the right side wall of the fuel cell stack, so that the steel belt can be bent downward along the right side wall of the fuel cell stack, so that the welding parts of the steel belt are aligned and overlapped, forming Figure 5The shape shown in the figure is formed, and the two steel strip heads are pressed together by the steel strip welding and pressing assembly to ensure that the steel strip joints are tightly attached and pressed together. Finally, the two steel strip heads are welded together by the welding head 45 to complete the bundling of the first steel strip. The operation process at the injured part can also be repeated to continue the installation and bundling of the second, third, and fourth steel strips.

[0090] In summary, the steel belt bundling device for the fuel cell stack provided in the present embodiment supports and presses the fuel cell stack and presses the steel belt on the fuel cell stack through the pressing fixture mechanism 1; the steel belt is positioned, vertically tightened and bidirectionally bent through the steel belt double bending mechanism 3, so that the steel belt passes through the bottom of the fuel cell stack and then bends upward, extends vertically upward along one side wall of the fuel cell stack to the top of the fuel cell stack, and is horizontally bent again under the action of the horizontal bending force, and extends horizontally along the top wall of the fuel cell stack to the other side of the fuel cell stack; the steel belt extending along the top wall of the fuel cell stack is bent downward by the steel belt lower bending mechanism 5, so that the steel belt extends vertically downward along the other side wall of the fuel cell stack, so that one steel belt head of the steel belt extends downward; the steel belt is positioned, vertically tightened and bidirectionally bent through the steel belt positioning mechanism 2 The steel strip is stretched and welded to make it extend from the bottom of the fuel cell stack, then bend from the other side of the fuel cell stack and extend vertically upward along the other side wall of the fuel cell stack, so that the other steel strip head of the steel strip is pressed against the other side wall of the fuel cell stack, and the two steel strip heads of the steel strip are pressed to make them overlap and be pressed against the side wall of the fuel cell stack; the two stacked and pressed steel strip heads are welded by the steel strip welding mechanism 4 to complete the bundling of the steel strips, thereby reducing the manual workload and realizing mechanized production, so that the quality consistency and qualified rate of the steel strip bundling are effectively guaranteed, and the problem of high labor intensity and poor product consistency in the existing manual operation of steel strip bundling of fuel cell stacks is solved, and some production processes with low efficiency and low production capacity of fuel cell stack products are mainly solved, which greatly improves the quality of the products produced.

[0091] Furthermore, the steel belt positioning mechanism 2 and the steel belt double bending mechanism 3 are both provided with three-dimensional moving components, which can be compatible with battery stack products with different steel belt lengths and sizes through X, Y, and Z three-axis tensioning and pressure bending to meet product function and performance requirements. At the same time, the mechanism is flexible and stable to use.

[0092] Furthermore, the steel strip is positioned, vertically tightened and bidirectionally bent by the steel strip double bending mechanism 3. The positioning allows the steel strip to perform corresponding movements under the action of the steel strip double bending mechanism 3, so that the steel strip can be vertically tightened to achieve one bending, and the steel strip is subjected to a horizontal bending force by the steel strip double bending mechanism 3, so that the steel strip is bent horizontally again. Compared with the existing upper bending device or unidirectional bending device, the steel strip double bending mechanism 3 can directly achieve bidirectional bending of the steel strip and integrate bending devices in two directions. It has a compact structure, is easy to transport, is conducive to promotion and use, and has a strong economic value.

[0093] Method Example:

[0094] See also Fig.25 , which is a flowchart of a steel strapping method for a fuel cell stack provided by an embodiment of the present invention. As shown in the figure, the steel strapping method uses the steel strapping device for a fuel cell stack to strap the steel strap, and includes the following steps:

[0095] Step S1 , pressing and fixing the fuel cell stack by a pressing fixture mechanism 1 .

[0096] Specifically, first, the electric push carrier 111 is driven by a screw rod to move laterally to the loading position, the fuel cell stack is installed on the electric push carrier 111, and the circumferential limiter 112 is used to limit the circumference. The electric push carrier 111 is driven in reverse by a screw rod to move laterally to the bundling position, and the stack pressing piece 122 is driven to move downward until the bottom wall of the stack pressing piece 122 abuts against the top wall of the fuel cell stack, thereby realizing the top pressing of the fuel cell stack.

[0097] Step S2, pre-punch two tensioning holes 71 on the steel belt, and pass the steel belt through the gap between the bottom of the fuel cell stack and the pressing fixture mechanism 1, so that the two tensioning holes 71 of the steel belt are respectively located on both sides of the fuel cell stack, and the steel belt is bent into an arc structure.

[0098] Specifically, two tension holes 71 are punched in the steel belt in advance, and the steel belt is passed through the gap between the fuel cell stack and the electric push carrier 111, and the two tension holes 71 of the steel belt are respectively located on both sides of the fuel cell stack, and the steel belt is bent into an arc structure to form Figure 3 Shape shown.

[0099] Step S3, respectively clamping the two tensioning holes 71 of the steel strip on the steel strip double bending mechanism 3 and the steel strip positioning mechanism 2.

[0100] Specifically, the steel belt side clamping assembly 33, the steel belt horizontal bending assembly 34 and the first steel belt positioning and tensioning assembly 32 are driven to move to the corresponding longitudinal position of the steel belt through the Y-axis bending movable member 312, and the steel belt side clamping assembly 33, the steel belt horizontal bending assembly 34 and the first steel belt positioning and tensioning assembly 32 are driven to move to the tensioning hole 71 of the steel belt through the X-axis bending movable member 311 and the Z-axis bending movable member 313, and the telescopic pull rod 323 is driven to extend through the telescopic driving member 324 so that the telescopic pull rod 323 is clamped into the tensioning hole 71 of one steel belt segment of the steel belt; similarly, the telescopic pull rod 323 of the second steel belt positioning and tensioning assembly 22 of the steel belt positioning mechanism 2 is clamped into the tensioning hole 71 of another steel belt segment of the steel belt.

[0101] In step S4, the two steel sections of the steel strip are respectively driven to be pulled upward by the steel strip double bending mechanism 3 and the steel strip positioning mechanism 2, so that the bottoms of the two steel sections of the steel strip are bent upward, and one steel section of the steel strip is pressed and horizontally bent again by the steel strip double bending mechanism 3, so that one steel section of the steel strip extends horizontally along the top wall of the fuel cell stack to the other side of the fuel cell stack.

[0102] Specifically, the first steel belt positioning and tensioning assembly 32 is driven upward and rightward (relative to the X-axis bending moving member 311 and the Z-axis bending moving member 313). Figure 4 The left side of the steel belt is moved upward (with respect to the position shown in the figure), the steel belt is tightened, and the left side of the steel belt is moved toward the fuel cell stack, that is, toward the right, so that the bottom of the left side of the steel belt is bent and extends upward along the left side wall of the fuel cell stack. The steel belt is pressed by the steel belt side clamping assembly 33 so that the inner frame of the steel belt can be well attached to the outer side of the stack product. The horizontal bending force is applied to the steel belt by the steel belt horizontal bending assembly 34 so that the steel belt is horizontally bent and extends horizontally to the right along the top wall of the fuel cell stack. Similarly, the second steel belt positioning and tensioning assembly 22 is used to position and tighten the steel belt upward and leftward (relative to the left side of the fuel cell stack). Figure 4 The right side of the steel belt is moved upward to lift the right side of the steel belt, tighten the steel belt, and move toward the fuel cell stack, that is, to the left, so that the bottom of the right side of the steel belt is bent and extends upward along the right side wall of the fuel cell stack to form a Figure 4 Shape shown.

[0103] Step S5, bending the steel strip extending along the top wall of the fuel cell stack downward by the steel strip downward bending mechanism 5, so that the steel strip extends vertically downward along the other side wall of the fuel cell stack, so that a steel strip head of the steel strip extends downward.

[0104] Specifically, the steel belt pressing body 1232 is driven downward by the vertical telescopic driving member 1231 to press the steel belt onto the top wall of the fuel cell stack; the steel belt lower bending mechanism 5 applies a downward bending force to the steel belt along the right side wall of the fuel cell stack, so that the steel belt can bend downward along the right side wall of the fuel cell stack, so that the welding parts of the steel belt are aligned and overlapped, forming Figure 5 Shape shown.

[0105] Step S6, stacking and pressing the steel strip head extending downward and the steel strip head extending upward onto the side wall of the fuel cell stack.

[0106] Specifically, the two steel strip heads are pressed together by a welding pressure head to ensure that the joints of the steel strips are tightly attached and pressed together.

[0107] Step S7, the steel strip welding mechanism 4 is used to weld the stacked and compressed first steel strip head and the second steel strip head to complete the bundling of the steel strips.

[0108] Specifically, the position of the welding head 45 is adjusted by the Y-axis welding moving assembly 42, the Z-axis welding moving assembly 43, and the X-axis welding moving assembly 44 to move it to the welding pressure head, and the two steel strip heads are welded by the welding head 45 to complete the bundling of the first steel strip.

[0109] Step S8, repeating steps S2 to S7 in sequence, and continuing the installation and bundling of the second, third, and fourth steel belts.

[0110] Specifically, after the installation and bundling of the second, third and fourth steel belts are completed, the electric push carrier 111 can be driven by a screw rod to move in the reverse lateral direction to the loading position, and the fuel cell stack can be unloaded from the electric push carrier 111 to complete the bundling of the steel belts on the fuel cell stack.

[0111] In summary, the steel strapping method for a fuel cell stack provided in this embodiment uses the above-mentioned steel strapping device to strap the steel straps. Since the above-mentioned steel strapping device has the above-mentioned effects, the steel strapping method also has corresponding effects.

[0112] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0113] In addition, it should be noted that in the description of the present invention, 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 a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0114] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A steel strapping device for a fuel cell stack, characterized in that: include: A pressing fixture mechanism, used to support and press the fuel cell stack and to press the steel belt on the fuel cell stack; A steel strip double-bending mechanism, arranged on one side of the pressing jig mechanism, for positioning, vertically tightening and bidirectionally bending the steel strip, so that the steel strip passes through the bottom of the fuel cell stack and then bends upward, extends vertically upward along one side wall of the fuel cell stack to the top of the fuel cell stack, and is horizontally bent again under the action of a horizontal bending force, and extends horizontally along the top wall of the fuel cell stack to the other side of the fuel cell stack; A steel strip downward bending mechanism, arranged on the pressing jig mechanism, for bending the steel strip extending along the top wall of the fuel cell stack downward so that the steel strip extends vertically downward along the other side wall of the fuel cell stack so that a steel strip head of the steel strip extends downward; A steel belt positioning mechanism is arranged on the other side of the pressing jig mechanism, and is used to position, vertically tighten and weld the steel belt, so that after the steel belt extends from the bottom of the fuel cell stack, it is bent from the other side of the fuel cell stack and extends vertically upward along the other side wall of the fuel cell stack, so that the other steel belt head of the steel belt is pressed against the other side wall of the fuel cell stack, and the two steel belt heads of the steel belt are pressed so that the two steel belt heads of the steel belt are stacked and pressed against the side wall of the fuel cell stack; The steel strip welding mechanism is arranged on the other side of the pressing fixture mechanism and is used to weld the two stacked and pressed steel strip heads to complete the bundling of the steel strips; The steel strip double bending mechanism comprises: A first three-dimensional moving component; A first steel belt positioning and tensioning assembly is arranged on the power output end of the first three-dimensional moving assembly, and is used to be clamped in the tensioning hole of the steel belt to achieve the positioning of the steel belt, and can drive the steel belt to be tightened upward into place under the action of the first three-dimensional moving assembly, so that the bottom of the steel belt is bent upward and extends upward along the side wall of the fuel cell stack; A steel belt side pressing assembly, arranged on the power output end of the first three-dimensional moving assembly and located above the first steel belt positioning and tensioning assembly, is used to press the steel belt after the steel belt is pulled upward into place, so that the steel belt extends upward and presses against the side wall of the fuel cell stack; A steel belt horizontal bending assembly, arranged on the power output end of the first three-dimensional moving assembly and located above the steel belt side pressing assembly, for applying a horizontal bending force to the steel belt after the steel belt is pressed onto the side wall of the fuel cell stack, so that the steel belt is horizontally bent and horizontally extended along the top wall of the fuel cell stack; The first steel belt positioning and tightening assembly comprises: Tension head fixing seat; A floating fixed seat is movably arranged on the tensioning head fixed seat along the z-axis, and a force spring is arranged between the floating fixed seat and the tensioning head fixed seat; A telescopic pull rod is arranged on the floating fixed seat in a telescopic manner, and is used to extend and penetrate into the tightening hole of the steel belt when the steel belt is positioned, tightened and bent, so as to pull the steel belt upward and tighten it. After the steel belt is tightened, the steel belt applies a tensile force to the telescopic pull rod, so that the telescopic pull rod and the floating fixed seat float along the z-axis, and under the action of the force spring, the telescopic pull rod applies a constant tensile force on the z-axis to the steel belt; and after the steel belt is tightened and bent into place, the telescopic pull rod can retract to release the tightening and positioning of the steel belt.

2. The steel strapping device for a fuel cell stack according to claim 1, characterized in that: The first three-dimensional moving component comprises: X-axis bending moving parts; A Y-axis bending moving part, arranged on the X-axis bending moving part, and used for moving along the X-axis with the output end of the X-axis bending moving part; The Z-axis bending movable part is arranged on the Y-axis bending movable part, and is used to move along the Y-axis with the output end of the Y-axis bending movable part, and drive the power output end arranged on the Z-axis bending movable part to move along the Z-axis, so as to realize the three-dimensional movement of the actuator.

3. The steel strapping device for a fuel cell stack according to claim 1 or 2, characterized in that: The pressing fixture mechanism comprises: Electric push positioning assembly, used for bottom support and position limiting of fuel cell stack; The top pressing assembly is arranged directly above the electric push positioning assembly and is used for top pressing the fuel cell stack on the electric push positioning assembly and top pressing the steel belt that is pressed against the top wall of the fuel cell stack.

4. The steel strapping device for a fuel cell stack according to claim 3, characterized in that: The electric push positioning assembly comprises: Electric push carrier; A circumferential limiter is arranged on the electric push carrier, and the electric push carrier is used to support the bottom of the fuel cell stack and circumferentially limit the fuel cell stack through the circumferential limiter; the electric push carrier is connected to a transverse conveying member, so that the electric push carrier can move laterally under the action of the transverse conveying member, thereby driving the fuel cell stack to move laterally, so that the fuel cell stack can move between the loading position and the bundling position, so as to facilitate the loading, unloading and bundling of the fuel cell stack.

5. The steel strapping device for a fuel cell stack according to claim 3, characterized in that: The top pressing assembly comprises: Press-fit support seat; A stack press piece is arranged on the press support seat in a position-adjustable manner along the height direction, and is used to press the top of the fuel cell stack on the electric push vehicle; a U-shaped groove structure is provided at the bottom of the stack press piece, and the solid part of the stack press piece is used to press on the top wall of the fuel cell stack, and the U-shaped groove structure is used to make way for the steel belt so that the steel belt can extend horizontally along the top wall of the fuel cell stack in the U-shaped groove structure; The steel belt press piece is arranged on the stack press piece and is used to perform top pressing on the steel belt that is pressed against the top wall of the fuel cell stack; wherein the steel belt press piece is arranged in the U-shaped groove structure.

6. The steel strapping device for a fuel cell stack according to claim 1 or 2, characterized in that: The steel belt positioning mechanism comprises: Second three-dimensional mobile component; A second steel belt positioning and tensioning assembly is arranged on the power output end of the second three-dimensional moving assembly, and is used to move under the action of the second three-dimensional moving assembly, so that the second steel belt positioning and tensioning assembly can be clamped in the tensioning hole of the steel belt, thereby realizing the positioning of the steel belt, and can drive the steel belt to be tightened upward into place under the action of the second three-dimensional moving assembly, so that the bottom of the steel belt is bent upward and extends upward along the side wall of the fuel cell stack, and the first steel belt head of the steel belt is pressed and contacted with the side wall of the fuel cell stack; The steel belt welding and clamping assembly is arranged on the power output end of the second three-dimensional moving assembly and is located above the second steel belt positioning and tensioning assembly. It is used to weld and clamp the two steel belt heads of the steel belt when the two steel belt heads are overlapped on the side wall of the fuel cell stack so that the two steel belt heads of the steel belt are pressed against the side wall of the fuel cell stack.

7. The steel strapping device for a fuel cell stack according to claim 1 or 2, characterized in that: The steel strip welding mechanism comprises: Welding support seat; A Y-axis welding moving assembly, disposed on the welding support seat; A Z-axis welding moving assembly is arranged on the Y-axis welding moving assembly and is used for performing Y-axis movement on the Y-axis welding moving assembly to move to a longitudinal position corresponding to the steel strip; An X-axis welding mobile assembly is arranged on the Z-axis welding mobile assembly, and a welding head is provided on the X-axis welding mobile assembly for performing three-dimensional movement under the action of the Y-axis welding mobile assembly, the Z-axis welding mobile assembly and the X-axis welding mobile assembly, so that the welding head moves to the position where the two steel strip heads of the corresponding steel strip are stacked and pressed, so as to weld the two steel strip heads.

8. A steel strip bundling method for a fuel cell stack, characterized in that: The steel strip bundling method uses the steel strip bundling device for a fuel cell stack as claimed in any one of claims 1 to 7 to bundle the steel strips, comprising the following steps: The fuel cell stack is pressed and fixed by a pressing fixture mechanism; Two tensioning holes are punched in the steel belt in advance, and the steel belt is passed through the gap between the bottom of the fuel cell stack and the pressing fixture mechanism, the two tensioning holes of the steel belt are respectively located on both sides of the fuel cell stack, and the steel belt is bent into an arc structure; The two tensioning holes of the steel belt are clamped on the steel belt double bending mechanism and the steel belt positioning mechanism respectively; The two steel sections of the steel strip are respectively driven to be pulled upward by the steel strip double bending mechanism and the steel strip positioning mechanism, so that the bottoms of the two steel sections of the steel strip are bent upward, and one steel section of the steel strip is pressed and horizontally bent again by the steel strip double bending mechanism, so that the one steel section of the steel strip extends horizontally along the top wall of the fuel cell stack to the other side of the fuel cell stack; Bend the steel strip extending along the top wall of the fuel cell stack downwardly by means of a steel strip downward bending mechanism, so that the steel strip extends vertically downwardly along the other side wall of the fuel cell stack, so that a steel strip head of the steel strip extends downwardly; The steel strip head extending downward and the steel strip head extending upward are stacked and pressed against the side wall of the fuel cell stack; The stacked and compressed first and second steel strip heads are welded by a steel strip welding mechanism to complete the bundling of the steel strips.

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