Disassembly device and disassembly method of battery stack

Abstract

The present application discloses a disassembly device and method for a battery stack, which solves the technical problems of low efficiency and high labor cost in separating the bipolar plates and membrane electrodes of the battery stack in the prior art. The disassembly device includes a disassembly table, a clamping mechanism, a disassembly assembly and a rotating assembly, wherein the clamping mechanism is used to clamp the end of the battery stack and is connected to the disassembly table; the disassembly assembly includes a disassembly head for extending between the bipolar plates and the membrane electrode of the battery stack, and the disassembly head is slidably connected to the disassembly table; the rotating assembly is located on one side of the disassembly assembly and is used to support the battery stack, and the rotating assembly includes a support table connected to the disassembly table by a rotating shaft, and the support table rotates and switches between a first position and a second position; wherein the side of the battery stack close to the disassembly assembly when in the first position is collinear with the side of the battery stack close to the disassembly assembly when in the second position, and the sliding direction of the disassembly head has a projection component along the collinear direction. The disassembly device provided by the present application has high efficiency in disassembling the battery stack and frees up manpower.

Description

Technical Field

[0001] The present application belongs to the technical field of battery stack disassembly, and specifically relates to a battery stack disassembly device and a battery stack disassembly method. Background Art

[0002] The battery stack includes a membrane electrode and a bipolar plate. Most single-stack structures use alternating stacks of bipolar plates and membrane electrodes. After the battery stack has been running for a period of time, the sealing strips between the membrane electrode and the bipolar plate will adhere to each other more tightly under the combined effects of long-term high temperature, humidity, pressure and other conditions. During the operation of the battery stack, by monitoring the voltage of a single piece, it is often found that there are problems with individual bipolar plates or membrane electrodes that need to be replaced. The number of components of existing battery stacks is increasing. In the process of replacing damaged bipolar plates, it is often necessary to disassemble them in sections multiple times.

[0003] Currently, the disassembly of bipolar plates and membrane electrodes is mainly done manually, using relatively hard and thin sheet tools that are inserted from the junction of the bipolar plates and membrane electrodes for separation. However, the separation efficiency is low and the labor cost is high. Summary of the invention

[0004] In order to solve the current technical problems of low efficiency and high labor cost in separating bipolar plates and membrane electrodes of a fuel cell stack, the present application provides a disassembly device and a disassembly method for a fuel cell stack.

[0005] In a first aspect of the present application, a disassembly device for a battery stack is provided, comprising:

[0006] Disassembly table;

[0007] A clamping mechanism, used for clamping the end of the battery stack and connected to the disassembly platform;

[0008] A disassembly assembly, comprising a disassembly head for extending between the bipolar plate and the membrane electrode of the battery stack, wherein the disassembly head is slidably connected to the disassembly table;

[0009] A rotating assembly, located at one side of the disassembling assembly and used to support the battery stack, the rotating assembly comprising a support table rotatably connected to the disassembling table via a rotating shaft, the support table rotatably switching between a first position and a second position;

[0010] The side of the battery stack close to the disassembly assembly when the battery stack is in the first position is collinear with the side of the battery stack close to the disassembly assembly when the battery stack is in the second position, and the sliding direction of the disassembly head has a projection component along the collinear direction.

[0011] In some embodiments, the support platform has a support mounting position for supporting the fuel cell stack, and the rotating shaft is located on a perpendicular midline of a short side of the fuel cell stack.

[0012] In some embodiments, the rotating shaft is located on one side of the supporting mounting position in the colinear direction.

[0013] In some embodiments, the rotating assembly further includes a plurality of load-bearing units spaced apart and connected to the disassembly platform, and the support platform can be switchably abutted against any of the load-bearing units to rotate and switch between the first position and the second position.

[0014] In some embodiments, the load-bearing unit includes a plurality of rotating members rotatably connected to the disassembly platform, and the plurality of rotating members are arranged at intervals.

[0015] In some embodiments, the clamping mechanism is connected to the support platform so that the clamping mechanism and the support platform rotate together.

[0016] In some embodiments, the support platform is provided with a positioning groove for the battery stack to be embedded, and the bottom of the positioning groove is a multi-step surface.

[0017] In some embodiments, the sliding direction of the disassembly head extends along a colinear direction.

[0018] In some embodiments, the position of the disassembly head is adjustable along the stacking direction of the battery stack, and / or the position of the disassembly head is adjustable along a direction perpendicular to the stacking direction of the battery stack.

[0019] In a second aspect of the present application, a method for disassembling a battery stack is provided, which is applicable to the aforementioned battery stack disassembling device, and the disassembly method comprises:

[0020] The battery stack to be disassembled is placed on the support platform of the rotating assembly, the support platform is in the first position, the pressing mechanism presses the end of the battery stack to be disassembled, the disassembly head of the disassembly assembly extends between the bipolar plate and the membrane electrode on the first side of the battery stack to be disassembled, and the disassembly head slides to separate the bipolar plate and the membrane electrode on the first side of the battery stack to be disassembled, thereby obtaining a semi-disassembled battery stack;

[0021] The clamping mechanism releases the semi-disassembled fuel cell stack, the support platform of the rotating assembly rotates to a second position around the rotating axis, the second side of the semi-disassembled fuel cell stack opposite to the first side approaches the disassembly assembly, the clamping mechanism clamps the semi-disassembled fuel cell stack, and the disassembly head continues to move to separate the bipolar plate and membrane electrode on the second side of the fuel cell stack to be disassembled.

[0022] The disassembly device of the battery stack provided in accordance with the embodiment of the present application includes a disassembly table, a clamping mechanism, a disassembly assembly and a rotating assembly, wherein the clamping mechanism is used to clamp the end of the battery stack and is connected to the disassembly table; the disassembly assembly includes a disassembly head used to extend between the bipolar plate and the membrane electrode of the battery stack, and the disassembly head is slidably connected to the disassembly table; the rotating assembly is located on one side of the disassembly assembly and is used to support the battery stack, and the rotating assembly includes a support table rotatably connected to the disassembly table via a rotating shaft, and the support table rotates and switches between a first position and a second position; wherein, the edge of the battery stack close to the disassembly assembly when in the first position is collinear with the edge of the battery stack close to the disassembly assembly when in the second position, and the sliding direction of the disassembly head has a projection component along the collinear direction.

[0023] The clamping mechanism can clamp the end plate of the battery stack, and fix the battery stack to be disassembled together with the support table to ensure the stability of the disassembly head during the process of disassembling the battery stack. The disassembly head of the disassembly assembly can extend between the bipolar plate and the membrane electrode. When the disassembly head slides relative to the disassembly table, the battery stack is stationary relative to the disassembly table, and the disassembly head can separate the bipolar plate from the membrane electrode. The support table of the rotating assembly can rotate around the rotating axis, so that the support table can switch between the first position and the second position. The side of the battery stack close to the disassembly assembly in the first position is collinear with the side of the battery stack close to the disassembly assembly in the second position, so that after disassembling one side, only the battery stack needs to be rotated to carry out the disassembly operation of the other side, without adjusting the position of the disassembly head, and the disassembly efficiency is high.

[0024] The disassembly process is as follows: first, the battery stack to be disassembled is placed on the support table of the rotating assembly, the support table is in the first position, the clamping mechanism clamps the end of the battery stack to be disassembled, the disassembly head of the disassembly assembly extends between the bipolar plate and the membrane electrode on the first side of the battery stack to be disassembled, and the disassembly head slides to separate the bipolar plate and the membrane electrode on the first side of the battery stack to be disassembled to obtain a semi-disassembled battery stack; the clamping mechanism releases the semi-disassembled battery stack, the support table of the rotating assembly rotates around the rotating shaft to the second position, the second side of the semi-disassembled battery stack approaches the disassembly assembly, the clamping mechanism clamps the semi-disassembled battery stack, and the disassembly head continues to move to separate the bipolar plate and the membrane electrode on the second side of the battery stack to be disassembled.

[0025] Compared with the manual disassembly in the prior art, the disassembly device provided by the present application has an edge of the battery stack close to the disassembly component when in the first position and an edge of the battery stack close to the disassembly component when in the second position that are collinear, so that after disassembling one edge, the battery stack only needs to be rotated to carry out the disassembly operation on the other edge, which has high disassembly efficiency and frees up manpower. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic structural diagram of the battery stack disassembly device of the present application is shown when the support platform is located at the first position.

[0027] Figure 2 Shows Figure 1 A schematic diagram of the structure of the disassembly device from another angle.

[0028] Figure 3 Shows Figure 1 A schematic diagram of the structure of the support platform in the disassembly device.

[0029] Figure 4 Shows Figure 1 Schematic diagram of the structure of the rotating parts in the disassembly device.

[0030] Figure 5 Shows Figure 1 Schematic diagram of the structure of the clamping mechanism and the battery stack in the disassembly device.

[0031] Figure 6 Shows Figure 1 Schematic diagram of the structure of the dismantling components in the dismantling device.

[0032] Figure 7 Shows Figure 6 A partial enlarged structural diagram of the disassembled components.

[0033] Figure 8 Shows Figure 1 A schematic diagram of the structure of the disassembly device at another angle of the disassembly component.

[0034] Fig. 9 Shows Figure 8 Schematic diagram of the matching structure of the adjustment block, disassembly head and disassembly rod in the disassembly assembly.

[0035] Fig.10 Shows Figure 8 A schematic diagram of the matching structure of the adjustment block, the disassembly head and the disassembly rod in the disassembly assembly at another angle.

[0036] Fig.11 Shows Figure 8 Schematic diagram of the structure of the disassembly head in the disassembly assembly.

[0037] Description of reference numerals:

[0038] 100-disassembly table, 200-disassembly assembly, 210-disassembly head, 211-adjustment section, 212-connecting section, 213-disassembly section, 220-disassembly frame, 221-disassembly rod, 222-adjustment block, 230-first slide rail, 240-first slider, 250-locking block, 260-fastener, 270-disassembly plate, 280-second slide rail, 290-nut, 291-locking clamp, 300-clamping mechanism, 310-connecting frame, 320-first adjustment rod, 330-pressing head, 400-rotation assembly, 410-support table, 411-support plate, 412-limiting block, 413-positioning groove, 420-load-bearing unit, 422-rotating ball, 423-rotating seat, 430-rotating shaft; 500-fuel cell stack. DETAILED DESCRIPTION

[0039] In order to make the technical personnel in the technical field to which the present application belongs to understand the present application more clearly, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present application.

[0040] The battery stack is provided with four sides, which are respectively a first side, a second side, a third side and a fourth side, wherein the first side and the second side are arranged opposite to each other, the third side and the fourth side are arranged opposite to each other, the first side and the second side may be two long sides of the battery stack, and the third side and the fourth side may be two short sides of the battery stack. In other embodiments, the first side and the second side are two short sides of the battery stack, and the third side and the fourth side are two long sides of the battery stack; the following description takes the first side and the second side of the battery stack as an example for explanation.

[0041] The first embodiment of the present application provides a disassembly device for a battery stack, which can quickly disassemble and mechanically remove the battery stack, saving labor costs; during the decomposition of the battery stack, the bipolar plates and the membrane electrodes are evenly stressed, and the bipolar plates and the membrane electrodes are not easily damaged.

[0042] See also Figure 1 as well as Figure 2 The disassembly device of the battery stack provided in the embodiment of the present application includes a disassembly table 100, a clamping mechanism 300, a disassembly assembly 200 and a rotating assembly 400, wherein the clamping mechanism 300 is used to clamp the end of the battery stack 500 and is connected to the disassembly table 100; the disassembly assembly 200 includes a disassembly head 210 used to extend between the bipolar plate and the membrane electrode of the battery stack 500, and the disassembly head 210 is slidably connected to the disassembly table 100; the rotating assembly 400 is located on one side of the disassembly assembly 200 and is used to support the battery stack 500, and the rotating assembly 400 includes a support table 410 rotatably connected to the disassembly table 100 through a rotating shaft 430, and the support table 410 rotates and switches between a first position and a second position; wherein, the side of the battery stack 500 close to the disassembly assembly 200 when in the first position is collinear with the side of the battery stack 500 close to the disassembly assembly 200 when in the second position, and the sliding direction of the disassembly head 210 has a projection component along the collinear direction.

[0043] The clamping mechanism 300 can clamp the end plate of the battery stack 500, and fix the battery stack 500 to be disassembled together with the support platform 410, so as to ensure the stability of the disassembly head 210 in the process of disassembling the battery stack 500. The disassembly head 210 of the disassembly assembly 200 can extend between the bipolar plate and the membrane electrode. When the disassembly head 210 slides relative to the disassembly platform 100, the battery stack 500 is stationary relative to the disassembly platform 100, and the disassembly head 210 can separate the bipolar plate from the membrane electrode. The support platform 410 of the rotating assembly 400 can rotate around the rotating shaft 430, so that the support platform 410 switches between the first position and the second position. The side of the battery stack 500 close to the disassembly assembly 200 in the first position is collinear with the side of the battery stack 500 close to the disassembly assembly 200 in the second position, so that after disassembling one side, only the battery stack 500 needs to be rotated to carry out the disassembly operation of the other side, and the disassembly efficiency is high.

[0044] The specific disassembly process is as follows: first, the battery stack 500 to be disassembled is placed on the support platform 410 of the rotating component 400, the support platform 410 is in the first position, the clamping mechanism 300 clamps the end of the battery stack 500 to be disassembled, the disassembly head 210 of the disassembly component 200 extends between the bipolar plate and the membrane electrode on the first side of the battery stack 500 to be disassembled, and the disassembly head 210 slides to separate the bipolar plate and the membrane electrode on the first side of the battery stack 500 to be disassembled, so as to obtain a semi-disassembled battery stack 500; the clamping mechanism 300 releases the semi-disassembled battery stack 500, the support platform 410 of the rotating component 400 rotates to the second position around the rotating shaft 430, the second side of the semi-disassembled battery stack 500 is close to the disassembly component 200, the clamping mechanism 300 clamps the semi-disassembled battery stack 500, and the disassembly head 210 continues to move to separate the bipolar plate and the membrane electrode on the second side of the battery stack 500 to be disassembled.

[0045] The specific structures of the rotating assembly 400 , the pressing mechanism 300 and the disassembling assembly 200 are described in more detail below.

[0046] The rotating assembly 400 is used to realize the rotation of the battery stack 500. Figure 3 The support platform 410 has a support installation position for supporting the battery stack 500, and the rotating shaft 430 is located on the mid-perpendicular line of the short side of the battery stack 500. In some embodiments, the rotating shaft 430 falls under the projection of the support installation position along the stacking direction of the battery stack 500. After the disassembly head 210 disassembles the first side, the disassembly head 210 is first slid away from the battery stack 500, and then the battery stack 500 is rotated around the rotating shaft 430, and then the disassembly head 210 is slid to the second side for disassembly; after the first side is disassembled, the disassembly head 210 is first slid away from the battery stack 500, so as to avoid interference between the battery stack 500 and the disassembly head 210 when the battery stack 500 rotates around the rotating shaft 430.

[0047] To further improve disassembly efficiency, please refer to Figure 2, the rotating shaft 430 is located on one side of the supporting mounting position in the collinear direction, and the disassembly head 210 does not need to be removed before the battery stack 500 rotates around the rotating shaft 430, and the disassembly head 210 will not interfere with the battery stack 500. In some embodiments, the rotating shaft 430 coincides with the short side of the battery stack 500, and the disassembly head 210 can disassemble the second side after the battery stack 500 rotates around the rotating shaft 430, which is more efficient.

[0048] In some embodiments, see Figure 2 The rotating assembly 400 further includes a plurality of load-bearing units 420 connected to the disassembly platform 100 at intervals. The support platform 410 can be switchably abutted against any load-bearing unit 420 to rotate and switch between the first position and the second position to ensure the stability of the support platform 410 during the rotation process. The rotation switching of the support platform 410 around the rotating shaft 430 can be achieved by manually driving the battery stack 500. In other embodiments, the selection assembly further includes a driving element, the housing of the driving element is connected to the disassembly platform 100, the output end of the driving element is connected to the rotating shaft 430 for force transmission, and the rotating shaft 430 is driven by the driving element to rotate, so as to automatically realize the rotation of the support platform 410.

[0049] In some embodiments, see Figure 2 as well as Figure 4 The load-bearing unit 420 includes a plurality of rotating parts rotatably connected to the disassembling platform 100, and the plurality of rotating parts are arranged at intervals. The rotating arrangement of the rotating parts can reduce the friction when the support platform 410 rotates around the rotating shaft 430, and the rotation of the support platform 410 is smoother and more stable. The number of rotating parts can be set as needed, for example, three, four or five. The rotating part can be a rotating ball 422 or a rotating column. When the rotating part is a rotating ball 422, the rotating ball 422 is connected to the disassembling platform 100 through a rotating seat 423. The rotating seat 423 is provided with a rotating cavity, and the rotating ball 422 is located in the rotating cavity. The rotating ball 422 at least partially extends out of the rotating cavity to roll in contact with the support platform 410. The rotating seat 423 can be connected to the support platform 410 by screwing or welding. When the load-bearing unit 420 is arranged, the rotating parts of the plurality of load-bearing units 420 can be radiated outward with the rotating shaft 430 as the center; the rotating parts located on two diameters can be staggered.

[0050] In some embodiments, see Figure 3 The support platform 410 is provided with a positioning groove 413 for embedding the power supply stack 500. The bottom of the positioning groove 413 is a multi-step surface to adapt to power supply stacks 500 of different sizes and improve the versatility of the disassembly device.

[0051] In some embodiments, see Figure 3The support platform 410 includes a support plate 411 and a limit block 412. The support plate 411 is rotatably connected to the rotating shaft 430. The support plate 411 can be switchably pressed on any load-bearing unit 420. The rotating shaft 430 is located on one side of the limit block 412 along the colinear direction. The limit block 412 is provided with a positioning groove 413. In some embodiments, there are two limit blocks 412. The two limit blocks 412 are arranged opposite to each other along the colinear direction. Each limit block 412 is provided with a positioning notch. The positioning notches of the two limit blocks 412 are combined to form a positioning groove 413. In some embodiments, one of the limit blocks 412 can be moved along the colinear direction to further adapt to battery stacks 500 of different sizes. The limit block 412 is connected to the support plate 411. Specifically,

[0052] The pressing mechanism 300 can press the end plate of the battery stack 500 , and fix the battery stack 500 to be disassembled together with the support platform 410 , thereby ensuring the stability of the disassembly process of the battery stack 500 .

[0053] In some embodiments, see Figure 2 The clamping mechanism 300 is connected to the support platform 410 so that the clamping mechanism 300 and the support platform 410 rotate together. It is not necessary to loosen the battery stack 500 by the clamping mechanism 300 after disassembling the first side, and the clamping mechanism 300 needs to clamp the battery stack 500 before disassembling the second side, which saves time and improves disassembly efficiency.

[0054] In some embodiments, see Figure 5 The clamping mechanism 300 includes a connecting frame 310, a first adjusting rod 320, and a pressing head 330 for pressing the upper end plate of the battery stack 500. The connecting frame 310 is connected to the support platform 410. The first adjusting rod 320 is threadedly connected to the connecting frame 310 and extends in the vertical direction, so that the height of the first adjusting rod 320 is adjustable. The first adjusting rod 320 is connected to the pressing head 330, driving the height of the pressing head 330 to be adjustable. In some embodiments, the connecting frame 310 is connected to the side of the support plate 411 away from the rotating shaft 430, and the connecting frame 310 will not interfere with the disassembly head 210 when the first side and the second side are disassembled. The rotation of the first adjusting rod 320 can be manually adjusted. In some embodiments, the clamping mechanism 300 also includes a driving element motor connected to the first adjusting rod 320 for force transmission to automatically realize the rotation of the first adjusting rod 320 and realize the height adjustment of the pressing head 330. The connecting frame 310 and the support plate 411 can be screwed or welded.

[0055] Disassembly assembly 200 is used to disassemble membrane electrode and bipolar plate, please refer to Fig.11The disassembly head 210 of the disassembly assembly 200 has a straight tip, which is convenient for extending between the bipolar plate and the membrane electrode. In some embodiments, the disassembly head 210 is also provided with tips along both sides of the straight line, which is convenient for separating the bipolar plate and the membrane electrode during the sliding process of the disassembly head 210 relative to the disassembly table 100, thereby reducing damage to the bipolar plate and the membrane electrode.

[0056] In some embodiments, in order to improve the disassembly quality and efficiency, the sliding direction of the disassembly head 210 extends along a colinear direction, so that during the disassembly process, the depth of the disassembly head 210 inserted into the battery stack 500 is the same at any position, the resistance fluctuation of the entire disassembly process is small, and the disassembly process is smoother.

[0057] In some embodiments, the position of the disassembly head 210 is adjustable along the stacking direction of the battery stack 500 , and / or the position of the disassembly head 210 is adjustable along a stacking direction perpendicular to the battery stack 500 .

[0058] Specifically, see Figure 6 as well as Figure 8 The disassembly assembly 200 includes a first slide rail 230, a first slider 240, and a disassembly rack 220. The first slide rail 230 is connected to the disassembly platform 100. The first slide rail 230 has a projection component along the collinear direction. The disassembly rack 220 is slidably connected to the first slide rail 230 through the first slider 240 to achieve the axial movement of the disassembly head 210 connected to the disassembly rack 220 relative to the disassembly platform 100 along the first slide rail 230. In some embodiments, the angle between the first slide rail 230 and the collinear direction does not exceed 5°. If the angle between the first slide rail 230 and the collinear direction is too large, the disassembly head 210 may be disengaged from between the bipolar plate and the membrane electrode. In order to achieve the locking of the first slider 240 and the first slide rail 230, please refer to Figure 7 In some embodiments, the disassembly assembly 200 further includes a locking block 250 and a fastener 260. The locking block 250 is slidably connected to the first slide rail 230. The locking block 250 is provided with a locking hole. The fastener 260 extends into the locking hole and presses against the first slide rail 230 to limit the movement of the first slider 240 along the first slide rail 230. The fastener 260 is a screw or a bolt.

[0059] See also Figure 8 The disassembly assembly 200 includes a disassembly plate 270 and a second slide rail 280. The first slide rail 230 is connected to the disassembly plate 270, and the second slide rail 280 is connected to the disassembly station 100. The second slide rail 280 is set at an angle to the first slide rail 230. The disassembly plate 270 is slidably connected to the second slide rail 280. Pushing the disassembly plate 270 can move the disassembly head 210 along the second slide rail 280, so that the disassembly head 210 is close to or away from the battery stack 500. In some embodiments, the second slide rail 280 is perpendicular to the first slide rail 230, so that the movement path of the disassembly head 210 is shorter and more efficient.

[0060] Similarly, in order to limit the disassembly plate 270, the above-mentioned locking block 250 and fastener 260 structure can also be used, that is, the locking block 250 is connected to the second slide rail 280, the locking block 250 is provided with a locking hole, and the fastener 260 is movably extended into the locking hole, and the end portion is pressed against the second slide rail 280 to limit the disassembly plate 270.

[0061] In order to realize automatic sliding, the disassembly assembly 200 also includes two sets of driving mechanisms, the driving mechanism includes a driving motor and a lead screw, and the lead screw is connected to the output end of the driving motor for force transmission. In one set of driving mechanisms: the lead screw is threadedly connected to the disassembly frame 220, and the lead screw is arranged parallel to the first slide rail 230, so as to realize the automatic movement of the disassembly head 210 along the collinear direction. In the other set of driving mechanisms, the lead screw is threadedly connected to the disassembly plate 270, and the lead screw is parallel to the second slide rail 280, so as to realize the automatic movement of the disassembly head 210 along the direction perpendicular to the collinear direction.

[0062] In other embodiments, the position of the disassembly head 210 can be adjusted perpendicular to the stacking direction of the battery stack 500 and can also be achieved through a screw slider or a worm gear mechanism, which is not described in detail in this application.

[0063] The above describes the implementation structure in which the position of the disassembly head 210 is adjustable along the stacking direction perpendicular to the battery stack 500 . Now, the following describes the implementation structure in which the position of the disassembly head 210 is adjustable along the stacking direction of the battery stack 500 .

[0064] See also Figure 6 The disassembly frame 220 includes a disassembly rod 221 and an adjusting block 222. The disassembly rod 221 extends in the vertical direction, i.e., the stacking direction of the battery stack 500. The lower end of the disassembly rod 221 is connected to the first slider 240. The adjusting block 222 is connected to the disassembly head 210. The adjusting block 222 is slidably connected to the disassembly rod 221. A locking clamp 291 is connected to the disassembly rod 221. The locking clamp 291 is located below the adjusting block 222. After the disassembly block is adjusted to the target height, the adjusting block 222 is limited and locked.

[0065] In order to improve the stability of the position adjustment of the disassembly head 210 along the stacking direction of the battery stack 500, in some embodiments, please continue to refer to Figure 6 At least two disassembly rods 221 are provided, and the two disassembly rods 221 are arranged at intervals, and the adjustment block 222 is slidably connected to at least two disassembly rods 221 at the same time. The number of locking clamps 291 is the same as the number of disassembly rods 221, and each disassembly rod 221 is connected with a locking clamp 291.

[0066] In some embodiments, the adjustment block 222 is provided with an adjustment hole, see Fig.11The disassembly head 210 includes a connecting section 212 and a disassembly section 213 connected to each other. The disassembly head 210 extends in a direction perpendicular to the stacking direction of the battery stack 500. The disassembly head 210 is provided with a projection component along the collinear direction. The disassembly section 213 is provided with a straight tip. The disassembly section 213 is located outside the adjustment hole. The connecting section 212 is movably arranged in the adjustment hole so that the disassembly head 210 can move along its own axial direction to achieve fine adjustment of the position of the disassembly head 210. In some embodiments, the disassembly head 210 is perpendicular to the collinear direction, the disassembly head 210 and the second slide rail 280 are parallel to each other, and the movement efficiency of the disassembly head 210 is higher.

[0067] In some embodiments, see Fig.10 , disassemble the assembly 200 including the nut 290, see Fig.11 The disassembly head 210 includes an adjustment section 211, which is connected to one end of the connecting section 212 away from the disassembly section 213. The adjustment section 211 is provided with threads, and the adjustment section 211 is threadedly connected to the nut 290. The end face of the nut 290 is pressed against the adjustment block 222. The connecting section 212 is a stop section, and the adjustment hole is a stop hole that cooperates with the stop section. By rotating the nut 290, the disassembly head 210 moves along its own axial direction. Through the cooperation of the stop section and the stop hole, the rotation of the disassembly head 210 is limited, so that the straight tip of the disassembly head 210 is parallel to the disassembly edge of the battery stack 500, and the disassembly quality and efficiency are high. The nut 290 includes an operating end and a limiting section arranged in sequence along its own axial direction. The radial dimension of the limiting section is larger than that of the operating end, and the limiting section is pressed against the adjustment block 222.

[0068] In some embodiments, the anti-rotation segment is a rectangular segment or a prism segment, and the anti-rotation hole matches the shape of the anti-rotation segment.

[0069] In some embodiments, a locking clamp 291 is provided at one end of the disassembly head 210 close to the disassembly head 210, and the locking clamp 291 can be opened and closed and connected to the disassembly head 210. The locking clamp 291 is connected to the connection between the connecting section 212 and the disassembly head 210. After the disassembly head 210 is adjusted to extend between the bipolar plate and the membrane electrode at the disassembly side of the battery stack 500, the disassembly head 210 is locked to ensure stability during the disassembly process.

[0070] The second embodiment of the present application provides a method for disassembling a battery stack 500, which is applicable to the disassembly device of the battery stack 500 of the first aspect. The disassembly method has fewer steps, high disassembly efficiency, and can ensure disassembly quality.

[0071] The disassembly method provided in the embodiment of the present application includes:

[0072] S1. Place the battery stack 500 to be disassembled on the support platform 410 of the rotating assembly 400. The support platform 410 is in the first position. The clamping mechanism 300 clamps the end of the battery stack 500 to be disassembled. The disassembly head 210 of the disassembly assembly 200 extends between the bipolar plate and the membrane electrode on the first side of the battery stack 500 to be disassembled. The disassembly head 210 slides to separate the bipolar plate and the membrane electrode on the first side of the battery stack 500 to be disassembled, thereby obtaining a semi-disassembled battery stack 500.

[0073] The first side here can be the wide side of the battery stack 500 or the narrow side of the battery stack 500. When the disassembly head 210 extends between the bipolar plate and the membrane electrode, first determine at which position of the battery stack 500 to be disassembled the sealing strip of the bipolar plate and the membrane electrode is damaged, that is, determine the height of the disassembly head 210, and then roughly adjust the position of the disassembly head 210 through the first slide rail 230, the second slide rail 280 and the disassembly rod 221, and then fine-tune the position of the disassembly rod 221 along the direction perpendicular to the collinear direction through the nut 290, so that the disassembly head 210 extends to the end of the first side.

[0074] S2. The clamping mechanism 300 loosens the semi-disassembled battery stack 500, and the support platform 410 of the rotating assembly 400 rotates to the second position around the rotating shaft 430. The second side of the semi-disassembled battery stack 500 opposite to the first side approaches the disassembly assembly 200. The clamping mechanism 300 clamps the semi-disassembled battery stack 500, and the disassembly head 210 continues to move to separate the bipolar plate and membrane electrode on the second side of the battery stack 500 to be disassembled.

[0075] When the clamping mechanism 300 is connected to the support plate 411, there is no need to loosen the clamping mechanism 300. The support platform 410 can be directly rotated around the rotating shaft 430 to the second position. The clamping mechanism 300 cannot be used again to clamp the battery stack 500. Two steps are omitted, and the disassembly efficiency is higher.

[0076] When the rotating shaft 430 is located directly below the support installation position of the support platform 410 , the disassembly head 210 needs to be moved along the first track after the first side is disassembled to prevent the battery stack 500 from interfering with the disassembly head 210 during rotation.

[0077] The following takes the first side and the second side as the two long sides of the battery stack 500, the third side and the fourth side as the two short sides of the battery stack 500, the rotating shaft 430 and the center of the short side, and the pressing mechanism 300 connected to the support platform 410 as an example to describe the disassembly process of the disassembly device in detail:

[0078] Step 1: Determine the positions of the bipolar plates and membrane electrodes to be disassembled of the battery stack 500 to be disassembled, place the battery stack 500 to be disassembled in the positioning groove 413 and in the first position, and the pressing head 330 of the pressing mechanism 300 presses the end plate on the upper part of the battery stack 500, at which time the first side is close to and parallel to the first slide rail 230, and the second side is away from and parallel to the first slide rail 230;

[0079] Step 2: The disassembly frame 220 is moved along the first slide rail 230 to adjust the axial position of the disassembly head 210 on the first slide rail 230, the disassembly plate 270 is moved along the second slide rail 280 to adjust the axial position of the disassembly head 210 on the second slide rail 280, and the adjustment block 222 is moved along the axial direction of the disassembly rod 221 to adjust the position of the disassembly head 210 in the vertical direction. At this time, the height position of the disassembly head 210 is the same as that of the bipolar plate and membrane electrode to be disassembled, and the straight tip of the disassembly head 210 is close to the end of the first side away from the rotating shaft 430. At this time, by rotating the nut 290, the straight tip is stably inserted between the bipolar plate to be disassembled and the membrane electrode, and then locked by the locking clamp 291. At this time, the disassembly head 210 is driven to move along the direction of the first side, and the bipolar plate and membrane electrode on the first side are separated.

[0080] Step 3: When the disassembly head 210 moves to the end of the first side close to the rotating shaft 430, the disassembly head 210 stops moving, and the support platform 410 rotates 180° around the rotating shaft 430 to the second position. The second side is close to the disassembly head 210, and the disassembly head 210 is just located at one end of the second side. At this time, the second side is collinear with the first side of the battery stack 500 when it is in the first position. The disassembly head 210 continues to move to disassemble the second side until the disassembly head 210 moves to the other end of the second side, completing the disassembly of the first side and the second side.

[0081] After the first and second sides are disassembled, the third and fourth sides may have been separated due to inertia. If the bipolar plates and membrane electrodes on the third and fourth sides are not separated, they can be disassembled manually because they are short and the connection is loose. Alternatively, the above three steps can be used to separate the bipolar plates and membrane electrodes on the third and fourth sides respectively.

[0082] The disassembly device and disassembly method of the battery stack 500 provided in the embodiment of the present application have at least the following advantages:

[0083] (1) The battery stack 500 to be disassembled adopts a fixed-axis rotating disassembly head 210, which improves the disassembly efficiency.

[0084] (2) The disassembly head 210 moves along the first slide rail 230 during the disassembly process, which has high stability. The fuel cell stack 500 is subjected to uniform force during the disassembly process, thereby improving the disassembly quality and preventing damage to the bipolar plates and membrane electrodes.

[0085] (3) The clamping mechanism 300 can prevent the battery stack 500 from collapsing and being damaged during the disassembly process.

[0086] (4) The support platform 410 is provided with a contoured positioning groove 413, and the bottom of the groove is provided with multiple stepped surfaces to accommodate the battery stacks 500 to be disassembled of different sizes.

[0087] (5) The disassembly head 210 is height-adjustable along the stacking direction of the battery stack 500, and can be adapted to the separation of bipolar plates and membrane electrodes of different heights, with high versatility.

[0088] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0089] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise" and "counterclockwise" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0090] In this application, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0091] In addition, the descriptions of "first", "second", etc. in this application are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0092] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A disassembly device for a battery stack, characterized in that: include: Disassembly table; A clamping mechanism, used for clamping the end of the battery stack and connected to the disassembly platform; A disassembly assembly, comprising a disassembly head for extending between the bipolar plate and the membrane electrode of the battery stack, wherein the disassembly head is slidably connected to the disassembly table; A rotating assembly, located at one side of the disassembly assembly and used to support the battery stack, the rotating assembly includes a load-bearing unit and a support table rotatably connected to the disassembly table through a rotating shaft, the load-bearing units are provided in plurality, the plurality of the load-bearing units are connected to the disassembly table at intervals, the load-bearing unit includes a plurality of rotating parts rotatably connected to the disassembly table, the plurality of the rotating parts are arranged at intervals; the support table can be switchably abutted against any of the load-bearing units to rotate and switch between a first position and a second position; the rotating shaft is located on the mid-perpendicular line of the short side of the battery stack and coincides with the short side of the battery stack, the support table rotates 180° around the rotating shaft to rotate and switch from the first position to the second position; The side of the battery stack close to the disassembled component when the battery stack is in the first position is collinear with the side of the battery stack close to the disassembled component when the battery stack is in the second position, and the sliding direction of the disassembly head has a projection component along the collinear direction.

2. The disassembly device for a battery stack according to claim 1, characterized in that: The support platform has a support installation position for supporting the fuel cell stack.

3. The disassembly device for a fuel cell stack according to claim 2, characterized in that: The rotating shaft is located at one side of the supporting installation position in the collinear direction.

4. The disassembly device for a fuel cell stack according to any one of claims 1 to 3, characterized in that: The clamping mechanism is connected to the support platform so that the clamping mechanism and the support platform rotate together.

5. The disassembly device for a fuel cell stack according to any one of claims 1 to 3, characterized in that: The support platform is provided with a positioning groove for the battery stack to be embedded, and the bottom of the positioning groove is a multi-step surface.

6. The disassembly device for a fuel cell stack according to any one of claims 1 to 3, characterized in that: The sliding direction of the disassembling head extends along a colinear direction.

7. The disassembly device for a fuel cell stack according to any one of claims 1 to 3, characterized in that: The position of the disassembling head is adjustable along the stacking direction of the battery stack, and / or the position of the disassembling head is adjustable along a direction perpendicular to the stacking direction of the battery stack.

8. A method for disassembling a battery stack, applicable to the battery stack disassembly device according to any one of claims 1 to 7, characterized in that: The disassembly method comprises: The battery stack to be disassembled is placed on the support platform of the rotating assembly, the support platform is in the first position, the pressing mechanism presses the end of the battery stack to be disassembled, the disassembly head of the disassembly assembly extends between the bipolar plate and the membrane electrode on the first side of the battery stack to be disassembled, and the disassembly head slides to separate the bipolar plate and the membrane electrode on the first side of the battery stack to be disassembled, thereby obtaining a semi-disassembled battery stack; The clamping mechanism releases the semi-disassembled fuel cell stack, the support platform of the rotating assembly rotates 180° around the rotating axis to a second position, the second side of the semi-disassembled fuel cell stack opposite to the first side approaches the disassembly assembly, the clamping mechanism clamps the semi-disassembled fuel cell stack, and the disassembly head continues to move to separate the bipolar plate and membrane electrode on the second side of the fuel cell stack to be disassembled.

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