Electric stack mounting positioning clamp and positioning method thereof

Abstract

The invention belongs to the technical field of fuel cells, flow cells and electrolyzed water, and particularly relates to an electric pile stacking positioning clamp and a positioning method thereof.The positioning clamp comprises a Z-axis direction moving positioning module to adapt to electric piles of different heights; the positioning module is moved in the Y-axis direction to adapt to the galvanic piles with different flow field sizes; the rigid structural member is connected with the Z-axis direction moving positioning module and the Y-axis direction moving positioning module; a switch type magnetic base with a magnetic switch is used for flexibly adjusting the position of the clamp and quickly fixing the clamp; the positioning method comprises the following steps: adjusting the Y-axis extending distance of each positioning clamp, enabling all the Z-axis slide rail type positioning arms to surround the stack main body and get close to the stack main body, and locking the slide block locking knob, so that each battery unit is accurately limited at the moment. According to the invention, galvanic piles with different specifications and different heights can be assembled, the positioning flatness of the side edges of the galvanic piles is improved, the conditions of left-right deviation and dislocation in the assembling process are avoided, and the assembling efficiency of the galvanic piles is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of fuel cells, liquid flow batteries and water electrolysis, and in particular to a battery stacking positioning fixture and a positioning method thereof. Background Art

[0002] In today's environment pollution and energy shortage, fuel cells are expected to be an alternative energy source for fossil fuels and are gaining more and more attention due to their environmental friendliness and high energy conversion efficiency. Proton exchange membrane fuel cells use solid electrolyte polymer membranes as electrolytes, and there is no electrolyte leakage during operation. They are safe, have high energy density, and can work in low temperature environments. Therefore, they will become the preferred power source in the future for mobile power sources and fixed power stations, and also become a research hotspot in the field of fuel cells. The core of the fuel cell system is the stack component. Fuel cells are different from conventional batteries in principle and structure. They are a device that directly converts chemical energy stored in fuel and oxidant into electrical energy in an electrochemical manner.

[0003] The assembly quality of a fuel cell stack is closely related to the performance of the battery product. If each single cell does not have a good positioning device during assembly, there will be assembly misalignment during assembly, which will cause uneven force on the fuel cell stack, loose sealing, and easy leakage or cross-gassing of oxidants, fuels, and coolants, which will ultimately affect the output characteristics of the battery. Traditional stack stacking devices are generally only suitable for a certain size type. Existing fuel cells have different sizes due to different requirements, so the stack assembly fixtures must also be redesigned due to changes in the size of the stack, increasing production costs and time. Therefore, developing an assembly positioning device that can adapt to different types and sizes of stacks will greatly improve the efficiency of battery stack assembly. Summary of the invention

[0004] In view of the above-mentioned problems that the existing battery stacking positioning device is only suitable for a single size and type of battery stack, the purpose of the present invention is to provide a battery stacking positioning fixture and a positioning method thereof. The battery stacking positioning fixture can assemble battery stacks of different specifications and heights, improve the flatness of the side positioning of the battery stack, avoid left and right deviation and misalignment during the assembly process, and improve the assembly efficiency of the battery stack.

[0005] The objective of the present invention is achieved through the following technical solutions: The clamp of the present invention comprises a Z-axis direction movable positioning module, a Y-axis direction movable positioning module, a ZY-axis rigid connecting piece and a switch-type magnetic seat, wherein the Z-axis direction movable positioning module comprises a Z-axis slide rail type positioning arm, a Z-axis slide rail fixed base, a slide rail locking knob and a positioning arm tightening spring, the Y-axis direction movable positioning module comprises a Y-axis slide rail guide groove, a Y-axis movable slider and a slider locking knob, the Y-axis slide rail guide groove is installed on the switch-type magnetic seat, the Y-axis movable slider is slidably connected with the Y-axis slide rail guide groove, and is locked and positioned by the slider locking knob after sliding into place, one end of the ZY-axis rigid connecting piece is connected with the Y-axis movable slider, the other end of the ZY-axis rigid connecting piece is connected with the Z-axis slide rail fixed base by a bolt, the Z-axis slide rail type positioning arm is slidably connected with the Z-axis slide rail fixed base, and is locked and positioned by the slide rail locking knob after sliding into place; a positioning arm tightening spring is sleeved on the bolt, and the two ends of the positioning arm tightening spring are respectively abutted against the Z-axis slide rail fixed base and the ZY-axis rigid connecting piece.

[0006] Wherein: the Z-axis slide rail positioning arm is provided with a slide groove for sliding connection with the Z-axis slide rail fixed base, and the slide groove is provided on a side of the Z-axis slide rail positioning arm facing the Z-axis slide rail fixed base and is provided along the length direction.

[0007] A bolt is passed through the Z-axis slide rail fixing base, and the bolt is threadedly connected to the ZY-axis rigid connector. The positioning arm tightening spring is located between the Z-axis slide rail fixing base and the ZY-axis rigid connector. The inclination angle of the Z-axis slide rail positioning arm is adjusted by adjusting the tightness between the bolt and the ZY-axis rigid connector through the positioning arm tightening spring.

[0008] The slide rail locking knob is located on the side of the Z-axis slide rail fixed base, one end of the slide rail locking knob is threadedly connected to the side of the Z-axis slide rail fixed base, and the other end of the slide rail locking knob is a clamping end, which is located on the outside of the Z-axis slide rail positioning arm. When the Z-axis slide rail positioning arm is raised and lowered into place along the Z-axis, the slide rail locking knob is turned to clamp the Z-axis slide rail positioning arm between the Z-axis slide rail fixed base and the clamping end, thereby achieving the positioning of the Z-axis slide rail positioning arm.

[0009] The ZY axis rigid connector is a polygonal frame, the bottom of the ZY axis rigid connector is fixedly connected to the Y axis movable slider, and one side vertical side of the ZY axis rigid connector is connected to the Z axis slide rail fixed base through bolts.

[0010] The moving direction of the Y-axis moving slider on the Y-axis slide rail guide groove is perpendicular to the moving direction of the Z-axis slide rail positioning arm, the slider locking knob is located on the side of the Y-axis moving slider, one end of the slider locking knob is threadedly connected to the side of the Y-axis moving slider, and the other end of the slider locking knob is a clamping end, which is located on the outside of the Y-axis slide rail guide groove. When the Y-axis moving slider slides into place along the Y-axis, the slider locking knob is turned to clamp the Y-axis slide rail guide groove between the Y-axis moving slider and the clamping end, thereby achieving the positioning of the Y-axis moving slider.

[0011] The bottom surface of the Y-axis slide rail guide groove is fixedly connected to the switch-type magnetic seat, and the top surface of the Y-axis slide rail guide groove is provided with a slide groove for sliding connection with the Y-axis moving slider along the length direction.

[0012] The positioning method of the battery stacking positioning fixture of the present invention comprises the following steps: Step A, placing a plurality of positioning fixtures on the periphery of the stack end plate; Step B, abutting the switch-type magnetic seat in each positioning fixture against the end plate of the battery stack, and then turning on the magnetic switch of the switch-type magnetic seat, so that the switch-type magnetic seat in each positioning fixture is fixed on the lower pressing table of the battery stack press and abuts against the end plate of the battery stack; Step C, slide the ZY-axis rigid connector in each positioning fixture on the Y-axis slide rail guide groove, adjust the Y-axis extension distance of each positioning fixture, so that the Z-axis slide rail positioning arm in each positioning fixture surrounds the battery stack body and abuts against the battery stack body, lock the slider locking knob in each positioning fixture, and then each battery cell is accurately limited.

[0013] Wherein: the battery stack body is stacked in sequence, and at the same time, the height of the Z-axis slide rail positioning arm in each positioning fixture is adjusted to always keep the upper end of the Z-axis slide rail positioning arm in each positioning fixture higher than the battery stack body until the stacking is completed.

[0014] According to the size of the battery stack body, four or six sets of positioning fixtures are selected to position and stack the battery stack body; when the positioning fixtures are four sets, a positioning fixture is placed in the middle of each of the four sides of the battery stack body; when the positioning fixtures are six sets, a positioning fixture is placed in the middle of each of the two short sides of the battery stack body, and a positioning fixture is placed at each end of the two long sides of the battery stack body.

[0015] The advantages and positive effects of the present invention are: The present invention can assemble battery stacks of different specifications and heights, improve the flatness of the side positioning of the battery stack, avoid left and right deviations and misalignments during the assembly process, and improve the assembly efficiency of the battery stack. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the positioning fixture of the present invention; Figure 2 This is a schematic diagram of the structure of the positioning fixture of the present invention when it is working; Among them: 1 is a Z-axis slide rail positioning arm, 2 is a Z-axis slide rail fixed base, 3 is a slide rail locking knob, 4 is a positioning arm tightening spring, 5 is a ZY-axis rigid connector, 6 is a Y-axis slide rail guide groove, 7 is a Y-axis moving slider, 8 is a slider locking knob, 9 is a switch-type magnetic seat, 10 is a magnetic switch, 11 is a stack end plate, and 12 is a stack body. DETAILED DESCRIPTION

[0017] The present invention will be further described below in conjunction with the accompanying drawings.

[0018] like Figure 1 As shown, the positioning fixture of the present invention includes a Z-axis direction moving positioning module, a Y-axis direction moving positioning module, a ZY-axis rigid connector 5 and a switch-type magnetic seat 9 with a magnetic switch 10. The Z-axis direction moving positioning module is used to adapt to battery stacks of different heights, and the Y-axis direction moving positioning module is used to adapt to battery stacks of different flow field sizes. The ZY-axis rigid connector 5 is used to connect the Z-axis direction moving positioning module and the Y-axis direction moving positioning module. The switch-type magnetic seat 9 is used to flexibly adjust the position of the positioning fixture and quickly fix it. The Z axis is the vertical direction, and the Y axis is the horizontal direction and intersects the Z axis perpendicularly.

[0019] The Z-axis direction movable positioning module of the present embodiment includes a Z-axis slide rail positioning arm 1, a Z-axis slide rail fixed base 2, a slide rail locking knob 3 and a positioning arm tightening spring 4, and the Y-axis direction movable positioning module includes a Y-axis slide rail guide groove 6, a Y-axis movable slider 7 and a slider locking knob 8. The Y-axis slide rail guide groove 6 is installed on a switch-type magnetic base 9, the Y-axis movable slider 7 is slidably connected to the Y-axis slide rail guide groove 6, and is locked and positioned by the slider locking knob 8 after sliding into place, one end of the ZY-axis rigid connector 5 is connected to the Y-axis movable slider 7, and the other end of the ZY-axis rigid connector 5 is connected to the Z-axis slide rail fixed base 2 through a bolt, the Z-axis slide rail positioning arm 1 is slidably connected to the Z-axis slide rail fixed base 2, and is locked and positioned by the slide rail locking knob 3 after sliding into place; a positioning arm tightening spring 4 is sleeved on the bolt, and the two ends of the positioning arm tightening spring 4 are respectively abutted against the Z-axis slide rail fixed base 2 and the ZY-axis rigid connector 5.

[0020] The Z-axis slide rail positioning arm 1 of this embodiment is in the shape of an elongated strip and is provided with a slide groove for sliding connection with the Z-axis slide rail fixed base 2. The slide groove is provided on the side of the Z-axis slide rail positioning arm 1 facing the Z-axis slide rail fixed base 2 and is provided along the length direction (i.e., the Z-axis direction).

[0021] The Z-axis slide rail fixing base 2 of this embodiment has two holes, each of which is penetrated by a bolt, which is threadedly connected to the ZY-axis rigid connector 5, and the positioning arm tightening spring 4 is located between the Z-axis slide rail fixing base 2 and the ZY-axis rigid connector 5. The positioning arm tightening spring 4 is used to adjust the inclination angle of the Z-axis slide rail positioning arm 1 by adjusting the tightness between the bolt and the ZY-axis rigid connector 5. The positioning arm tightening spring 4 of this embodiment has a high modulus coefficient (200GPa) and can provide the required tightening force.

[0022] The slide rail locking knob 3 of the present embodiment is located on the side of the Z-axis slide rail fixed base 2, one end of the slide rail locking knob 3 is threadedly connected to the side of the Z-axis slide rail fixed base 2, and the other end of the slide rail locking knob 3 is a clamping end, which is located on the outside of the Z-axis slide rail positioning arm 1. When the Z-axis slide rail positioning arm 1 is raised and lowered into place along the Z-axis, the slide rail locking knob 3 is rotated to clamp the Z-axis slide rail positioning arm 1 between the Z-axis slide rail fixed base 2 and the clamping end, thereby realizing the positioning of the Z-axis slide rail positioning arm 1.

[0023] The ZY axis rigid connector 5 of this embodiment is a polygonal frame, which is hollowed out in the middle to reduce weight; the bottom of the ZY axis rigid connector 5 is fixedly connected to the Y axis movable slider 7, and one side vertical side of the ZY axis rigid connector 5 is connected to the Z axis slide rail fixed base 2 by bolts.

[0024] The moving direction of the Y-axis movable slider 7 on the Y-axis slide rail guide groove 6 (i.e., the Y-axis direction) of the present embodiment is perpendicular to the moving direction of the Z-axis slide rail type positioning arm 1 (i.e., the Z-axis direction). The Y-axis slide rail guide groove 6 is a strip-shaped structure. The top surface of the Y-axis slide rail guide groove 6 is provided with a slide groove for sliding connection with the Y-axis movable slider 7 along the length direction (i.e., the Y-axis direction). The bottom surface of the Y-axis slide rail guide groove 6 is fixedly connected to the switch-type magnetic seat 9.

[0025] The slider locking knob 8 of the present embodiment is located on the side of the Y-axis moving slider 7, one end of the slider locking knob 8 is threadedly connected to the side of the Y-axis moving slider 7, and the other end of the slider locking knob 8 is a clamping end, which is located on the outside of the Y-axis slide rail guide groove 6. When the Y-axis moving slider 7 slides into place along the Y-axis, the slider locking knob 8 is turned to clamp the Y-axis slide rail guide groove 6 between the Y-axis moving slider 7 and the clamping end, thereby achieving the positioning of the Y-axis moving slider 7.

[0026] The switch type magnetic seat 9 of this embodiment is a prior art and can be purchased from Guangzhou Andu Measurement Instrument Co., Ltd., and will not be described in detail here. The switch type magnetic seat 9 is fixed on the lower pressing table of the battery stack press, and the position can be flexibly adjusted; after the switch type magnetic seat 9 is fixed, the battery stack can be limited by adjusting the height and advance and retreat position of the Z-axis slide rail positioning arm 1.

[0027] The positioning method of the battery stacking positioning fixture of the present invention comprises the following steps: Step A, placing a plurality of positioning fixtures on the periphery of the stack end plate 11; Step B, abutting the switch-type magnetic seat 9 in each positioning fixture against the stack end plate 11, and then turning on the magnetic switch 10 of the switch-type magnetic seat 9, so that the switch-type magnetic seat 9 in each positioning fixture is fixed on the lower pressing table of the stack press and abuts against the side of the stack end plate 11; Step C, slide the ZY-axis rigid connector 5 in each positioning fixture on the Y-axis slide rail guide groove 6, adjust the Y-axis extension distance of each positioning fixture, so that the Z-axis slide rail positioning arm 1 in each positioning fixture surrounds the battery stack body 12 and abuts against the battery stack body 12, and lock the slider locking knob 8 in each positioning fixture, at this time, each battery unit is accurately limited; Step D, stack the battery stack body 12 in sequence, and adjust the height of the Z-axis slide rail positioning arm 1 in each positioning fixture at the same time, always keeping the upper end of the Z-axis slide rail positioning arm 1 in each positioning fixture higher than the battery stack body 12 until the stacking is completed.

[0028] According to the size of the battery stack body 12, four or six sets of positioning fixtures are selected to position and stack the battery stack body 12. When there are four sets of positioning fixtures, a positioning fixture is placed in the middle of each of the four sides of the battery stack body 12; the battery stack body 12 to be assembled in this embodiment is a rectangular parallelepiped, and six sets of positioning fixtures are used to achieve precise positioning, with a positioning fixture placed in the middle of each of the two short sides of the battery stack body 12, and a positioning fixture placed at each end of the two long sides of the battery stack body 12.

[0029] The above are only several embodiments of the present invention and are not intended to limit the present invention in any form. Although the present invention is disclosed as above in the form of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the art, without departing from the scope of the technical solution of the present invention, using the above disclosed technical content to make slight changes or modifications are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. A battery stacking positioning fixture, characterized in that: The invention comprises a Z-axis direction movable positioning module, a Y-axis direction movable positioning module, a ZY-axis rigid connection member (5) and a switch-type magnetic seat (9), wherein the Z-axis direction movable positioning module comprises a Z-axis slide rail type positioning arm (1), a Z-axis slide rail fixed base (2), a slide rail locking knob (3) and a positioning arm tightening spring (4), and the Y-axis direction movable positioning module comprises a Y-axis slide rail guide groove (6), a Y-axis movable slider (7) and a slider locking knob (8), wherein the Y-axis slide rail guide groove (6) is installed on the switch-type magnetic seat (9), and the Y-axis movable slider (7) is slidably connected to the Y-axis slide rail guide groove (6) and is engaged with the slide rail. After moving into position, the slider locking knob (8) is used to lock the position; one end of the ZY axis rigid connector (5) is connected to the Y axis movable slider (7); the other end of the ZY axis rigid connector (5) is connected to the Z axis slide rail fixed base (2) via a bolt; the Z axis slide rail type positioning arm (1) is slidably connected to the Z axis slide rail fixed base (2) and is locked into position via a slide rail locking knob (3) after sliding into position; a positioning arm tightening spring (4) is sleeved on the bolt; the two ends of the positioning arm tightening spring (4) are respectively in contact with the Z axis slide rail fixed base (2) and the ZY axis rigid connector (5).

2. The battery stacking positioning fixture according to claim 1, characterized in that: The Z-axis slide rail type positioning arm (1) is provided with a slide groove for sliding connection with the Z-axis slide rail fixed base (2); the slide groove is provided on a side of the Z-axis slide rail type positioning arm (1) facing the Z-axis slide rail fixed base (2) and is provided along the length direction.

3. The battery stacking positioning fixture according to claim 1, characterized in that: The Z-axis slide rail fixed base (2) is provided with a bolt, and the bolt is threadedly connected to the ZY-axis rigid connector (5). The positioning arm tightening spring (4) is located between the Z-axis slide rail fixed base (2) and the ZY-axis rigid connector (5). By adjusting the tightness between the bolt and the ZY-axis rigid connector (5), the inclination angle of the Z-axis slide rail type positioning arm (1) is adjusted by the positioning arm tightening spring (4).

4. The battery stacking positioning fixture according to claim 1, characterized in that: The slide rail locking knob (3) is located on the side of the Z-axis slide rail fixed base (2), one end of the slide rail locking knob (3) is threadedly connected to the side of the Z-axis slide rail fixed base (2), and the other end of the slide rail locking knob (3) is a clamping end, which is located on the outside of the Z-axis slide rail positioning arm (1). When the Z-axis slide rail positioning arm (1) is lifted and lowered along the Z-axis to a certain position, the slide rail locking knob (3) is screwed to clamp the Z-axis slide rail positioning arm (1) between the Z-axis slide rail fixed base (2) and the clamping end, thereby realizing the positioning of the Z-axis slide rail positioning arm (1).

5. The battery stacking positioning fixture according to claim 1, characterized in that: The ZY axis rigid connector (5) is a polygonal frame, the bottom of the ZY axis rigid connector (5) is fixedly connected to the Y axis movable slider (7), and one vertical side of the ZY axis rigid connector (5) is connected to the Z axis slide rail fixed base (2) via bolts.

6. The battery stacking positioning fixture according to claim 1, characterized in that: The moving direction of the Y-axis movable slider (7) on the Y-axis slide rail guide groove (6) is perpendicular to the moving direction of the Z-axis slide rail positioning arm (1); the slider locking knob (8) is located on the side of the Y-axis movable slider (7); one end of the slider locking knob (8) is threadedly connected to the side of the Y-axis movable slider (7); the other end of the slider locking knob (8) is a clamping end, and the clamping end is located on the outside of the Y-axis slide rail guide groove (6); when the Y-axis movable slider (7) slides into place along the Y-axis, the slider locking knob (8) is turned to clamp the Y-axis slide rail guide groove (6) between the Y-axis movable slider (7) and the clamping end, thereby realizing the positioning of the Y-axis movable slider (7).

7. The battery stacking positioning fixture according to claim 1, characterized in that: The bottom surface of the Y-axis slide rail guide groove (6) is fixedly connected to the switch-type magnetic seat (9), and the top surface of the Y-axis slide rail guide groove (6) is provided with a slide groove for sliding connection with the Y-axis movable slider (7) along the length direction.

8. A positioning method for the battery stacking positioning fixture according to any one of claims 1 to 7, characterized in that: The steps include: Step A, placing a plurality of positioning fixtures on the periphery of the stack end plate (11); Step B, abutting the switch-type magnetic seat (9) in each positioning fixture against the end plate (11) of the battery stack, and then turning on the magnetic switch (10) of the switch-type magnetic seat (9), so that the switch-type magnetic seat (9) in each positioning fixture is fixed on the lower pressing table of the battery stack press and abuts against the end plate (11) of the battery stack; Step C, sliding the ZY-axis rigid connector (5) in each positioning fixture on the Y-axis slide rail guide groove (6), adjusting the Y-axis extension distance of each positioning fixture, so that the Z-axis slide rail positioning arm (1) in each positioning fixture surrounds the battery stack body (12) and abuts against the battery stack body (12), and locking the slider locking knob (8) in each positioning fixture, at which time each battery unit is accurately limited.

9. The positioning method according to claim 8, characterized in that: The battery stack bodies (12) are stacked in sequence, and at the same time, the height of the Z-axis slide rail type positioning arm (1) in each positioning fixture is adjusted to always keep the upper end of the Z-axis slide rail type positioning arm (1) in each positioning fixture higher than the battery stack body (12) until the stacking is completed.

10. The positioning method according to claim 8, characterized in that: According to the size of the battery stack body (12), four or six sets of positioning fixtures are selected to position and stack the battery stack body (12); when there are four sets of positioning fixtures, a positioning fixture is placed in the middle of each of the four sides of the battery stack body (12); when there are six sets of positioning fixtures, a positioning fixture is placed in the middle of each of the two short sides of the battery stack body (12), and a positioning fixture is placed at each end of the two long sides of the battery stack body (12).

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