A discharge device for disassembling power batteries

Abstract

The present invention relates to a discharge device for disassembling a power battery, the device having a transport path and a liquid storage area, the battery cell moves along the transport path, the liquid storage area is used to load an immersion liquid, the transport path passes through the liquid storage area, the transport path includes a first stroke and a second stroke, the length of the first stroke is greater than the second stroke, the battery cell reaches the second stroke from the first stroke, and a puncture mechanism is provided at the second stroke. The present invention enables the battery cell to release most of the remaining power through solution immersion during the discharge process through the connection and coordination between the first stroke and the second stroke, and then release a small part of the remaining power through puncture, so that the time used for the entire discharge process is shortened, while ensuring the safety of the process.

Description

Technical Field

[0001] The invention belongs to the technical field of battery disassembly, and in particular relates to a discharge device for disassembling a power battery. Background Art

[0002] With the popularity of new energy vehicles, the use of power lithium-ion batteries is becoming more and more widespread. Along with this comes the problem of dismantling and recycling a large number of waste batteries. The dismantling of waste batteries mainly involves two processes: the discharge of single cells and the separation of materials. At present, the discharge methods of waste single cells mainly include immersion discharge and forced discharge (puncture discharge). Of course, there are also discharges through charging and discharging equipment, but this method is costly and not suitable for the discharge process of large quantities of cells, so it is rarely used; immersion discharge mainly discharges by placing the cell in a conductive salt solution to connect the positive and negative electrodes of the cell. Its disadvantage is that the discharge speed is slow, and as the cell power is continuously released, the lower the cell power, the slower the discharge speed will be; puncture discharge inserts a needle into the cell to make a direct short circuit between the positive and negative electrode materials, so that the power can be quickly released in a short time. During the process, the puncture needle heats up quickly due to the current, making it easy to catch fire at the puncture point, and even causing the entire cell to explode, so this method is highly dangerous.

[0003] Based on the above, the inventor believes that the prior art lacks a discharge device whose discharge speed can be improved compared to immersion discharge and which is safer than puncture discharge. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the following technical problems in the prior art: the prior art lacks a discharge device that can take into account both the discharge speed and the safety of the process. To solve this technical problem, the present invention provides the following technical solution:

[0006] A discharging device for disassembling a power battery, the device comprising:

[0007] a transport path along which the battery cells move;

[0008] A liquid storage area, which is used to load the soaking liquid, and the transport path passes through the liquid storage area;

[0009] The transport path includes a first stroke and a second stroke, the first stroke is longer than the second stroke, the battery cell reaches the second stroke from the first stroke, and a puncture mechanism is provided at the second stroke.

[0010] As a preferred technical solution for a discharge device for disassembling a power battery, the puncture mechanism includes a first circulating belt arranged at a fixed point relative to the liquid storage area, which is close to the second stroke, and also includes a puncture needle arranged on the first circulating belt.

[0011] As a preferred technical solution for the discharge equipment for disassembling power batteries, it also includes a second circulating belt, which is arranged at a relatively fixed point relative to the liquid storage area, and the linear speed of the first circulating belt is configured to be consistent with that of the second circulating belt.

[0012] As an optimal technical solution for a discharge device for disassembling a power battery, it also includes a pressing mechanism. The second circulating belt is located at the lower side of the first circulating belt. The surface of the second circulating belt is evenly provided with placement grooves. The placement grooves are provided with through holes for the puncture needle to pass through. The pressing mechanism is located at the second stroke and on the upper side of the second circulating belt.

[0013] As a preferred technical solution for a discharge device for disassembling a power battery, a buffer zone is provided below the liquid storage area, which is located below the first circulation belt.

[0014] As an optimal technical solution for a discharge device for disassembling a power battery, the puncture mechanism also includes a first support wall fixedly arranged in the liquid storage area, which is used to guide the path of the first circulating belt body, the first circulating belt body includes a plurality of guide plates, and the plurality of guide plates are hinged in sequence, the puncture needle is slidably connected to the guide plate, and a reset spring is connected between the guide plate, a second support wall is fixedly arranged in the liquid storage area, which is supported on the second circulating belt body, a gap is formed between the first support wall and the second support wall, the width of the gap is consistent with the thickness of the guide plate, a limiting wall is fixedly arranged in the liquid storage area, which includes an inclined section and a horizontal section, and the angle between the wall surface of the inclined section and the longitudinal direction is between 30° and 50°.

[0015] As a preferred technical solution for a discharge device for disassembling a power battery, the puncture needle includes an inner needle rod and an outer syringe. The outer syringe is sleeved on the inner needle rod and slidably connected to the guide plate. An extrusion chamber and a liquid inlet hole are constructed on the inner needle rod. The extrusion chamber is connected to the tip of the outer syringe and is connected to the outside through the liquid inlet hole. The reset spring is connected between the inner needle rod and the guide plate.

[0016] As an optimal technical solution for a discharge device for disassembling a power battery, it also includes a connecting portion, which is detachably connected to the guide plate, and the outer syringe is slidably matched with the connecting portion.

[0017] As a preferred technical solution for a discharge device for disassembling a power battery, a first protrusion end is constructed on the guide plate, and the first protrusion end is used to extend into the through hole, and the distance between two adjacent first protrusion ends is consistent with the distance between two adjacent through holes.

[0018] As a preferred technical solution for a discharge device for disassembling a power battery, it also includes a driving roller, which is arranged to rotate relative to the liquid storage area, and the driving roller is configured with a driving force. At least one point on the second circulating belt forms a return bend at the driving roller and is supported by the driving roller. The driving roller is evenly provided with second protruding ends, which are meshed with the through holes.

[0019] The power battery disassembly discharge device provided by the present invention has the following beneficial effects:

[0020] 1 The present invention connects and cooperates the first stroke with the second stroke, so that during the discharge process, the battery cell can first release most of the remaining power through solution immersion, and then quickly release a small part of the remaining power through puncture. In this way, the time used for the entire discharge process is shortened and the safety of the process is guaranteed.

[0021] 2 In the present invention, through the cooperation between multiple guide plates, the tip of the puncture needle can be fixed upward during operation, thereby ensuring a smooth puncture process.

[0022] The present invention provides a first protrusion end on the guide plate and forms a match with the through hole, so that the linear speed between the first circulating belt and the second circulating belt can be kept fully consistent. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0024] Figure 1 It is a three-dimensional diagram of one embodiment of the present invention.

[0025] Figure 2 About Figure 1 Another perspective view of .

[0026] Figure 3 For Figure 1 Display diagram of the middle part of the structure when it is cut out in three dimensions.

[0027] Figure 4 About Figure 3 A cross-sectional view of the structure shown.

[0028] Figure 5 About Figure 4 An enlarged view of the content shown in the middle part.

[0029] Figure 6 For Figure 5 The structure shown in the middle part is extracted separately.

[0030] Figure 7 It is a schematic diagram of the installation between the puncture needle and the guide plate in an embodiment of the present invention.

[0031] Figure 8 Schematic diagram of the structure of the driving roller in an embodiment of the present invention.

[0032] Reference numerals:

[0033] 1. Liquid storage area;

[0034] 2. First trip;

[0035] 3. Second trip;

[0036] 4. Puncture mechanism; 401. first circulating belt; 401a. guide plate; 401b. connecting part; 401c. first protruding end; 402. puncture needle; 402a. inner needle rod; 402b. outer syringe; 402c. extrusion chamber; 402d. liquid inlet hole; 403. first supporting wall; 404. return spring;

[0037] 5. Second circulation belt; 501. Placement groove; 502. Through hole;

[0038] 6. Pressing mechanism;

[0039] 7. Cache area;

[0040] 8. A second supporting wall;

[0041] 9. Limiting wall; 901. Inclined section; 902. Horizontal section;

[0042] 10. driving roller; 10a. second protruding end;

[0043] 11. Drive motor. DETAILED DESCRIPTION

[0044] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0045] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0046] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0047] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0048] Reference Figure 1-Figure 4 One embodiment of the present invention provides a discharging device for disassembling a power battery, the device having the following features or structures:

[0049] A transport path, along which the battery cell can be linearly moved when the battery cell is placed on the device;

[0050] Liquid storage area 1, the liquid storage area is used to load the soaking liquid (salt solution) required for soaking the battery cell, and the transportation path is configured to pass through the liquid storage area 1;

[0051] The transport path includes a first stroke 2 and a second stroke 3, the length of the first stroke 2 is much greater than the second stroke 3, and regarding the moving direction of the battery cell on the device, specifically, the battery cell first passes through the first stroke 2 and then passes through the second stroke 3, and a corresponding puncture mechanism 4 is provided at the second stroke 3;

[0052] Based on the above, in the process of realizing the discharge of the battery cell of the present invention, the battery cell first passes through the first stroke 2 and then reaches the second stroke 3. The battery cell needs sufficient time when passing through the first stroke 2, so that the battery cell is fully soaked in the soaking liquid to exhaust most of the remaining power in the battery cell. Then the battery cell passes through the second stroke 3 in a short time, so that the battery cell is punctured by the puncture mechanism 4, so that the relatively small remaining power in the battery cell is quickly released. Compared with the method of simply chemical immersion in the prior art, the overall time of this process can be effectively shortened. At the same time, compared with the discharge method of simply puncturing in the prior art, since most of the power has been released, it will be safer when puncturing. Moreover, in the present invention, the puncture process is carried out in the soaking liquid, so that the battery cell can be fully cooled by the soaking liquid to prevent high temperature from being generated at the moment of puncture, thereby further ensuring the safety of the entire process.

[0053] The above is a basic introduction to the working process of the present invention. The specific structure of the device described in the present invention will be described in detail below. Specifically:

[0054] Continue to refer to Figure 1-Figure 4 In the present invention, the formation of the liquid storage area can be provided by a placement tank 501 or a water tank, and the puncture mechanism 4 includes a first circulating belt 401 that is relatively fixedly set with the liquid storage area 1, and the first circulating belt 401 is close to the second stroke 3. Specifically, the first circulating belt 401 can be fixedly configured inside the water tank, and the linear speed of the belt surface of the first circulating belt 401 is configured to be the same as the moving speed of the battery cell on the moving path. The puncture mechanism 4 also includes a puncture needle 402 arranged on the first circulating belt 401, which moves synchronously with the belt surface of the first circulating belt 401. When the puncture needle 402 moves to the moving path, the battery cell on the moving path is pierced, thereby realizing the puncture discharge process of the battery cell.

[0055] Reference Figure 1-Figure 5 Regarding the formation of the moving path in the present invention, specifically, the device further includes a second circulating belt 5, which is arranged at a relatively fixed point relative to the liquid storage area 1. The specific direction of the second circulating belt 5 on the liquid storage area 1 is as follows: Figure 4 As shown, Figure 4From the perspective, the moving path of the second circulating belt 5 is from left to right. The left side of the second circulating belt 5 extends to a larger part outside the liquid storage area 1, so as to place the battery cells to be discharged. The right side of the second circulating belt 5 extends to a smaller part outside the liquid storage area 1, so as to send the battery cells out of the liquid storage area 1. The middle part of the second circulating belt 5 is immersed in the liquid storage area 1 and runs horizontally, thereby forming the moving path, which includes the first stroke 2 and the second stroke 3. The linear speed of the first circulating belt 401 is configured to be consistent with that of the second circulating belt 5. When puncturing, the puncture needle 402 directly passes through the second circulating belt 5 when it moves to the second circulating belt 5, thereby piercing the battery cells. The cooperation of the second circulating belt 5 enables the battery cells to enter the liquid storage area 1 and ensure the battery cells are sent out of the liquid storage area 1 while completing the battery cell movement process.

[0056] Reference Figure 1-Figure 5 The device also includes a pressing mechanism 6. The second circulating belt 5 is located at the lower side of the first circulating belt 401, so that during puncture, the puncture needle 402 is inserted into the second circulating belt 5 from bottom to top. The surface of the second circulating belt 5 is evenly provided with placement grooves 501, which are used to place the battery cells. The arrangement of the placement grooves 501 is in a matrix, and the arrangement of the puncture needles 402 on the surface of the first circulating belt 401 is consistent with this. When the battery cells are placed on the second circulating belt 5, they can be evenly placed according to the positions of the placement grooves 501. The placement grooves 501 are provided with through holes 502, which are used for the puncture needles 402 to pass through. The pressing mechanism 6 includes a pressing mechanism 6, wherein the second circulating belt 5 is provided with ... The holding mechanism 6 is located at the second stroke 3 and on the upper side of the second circulating belt 5. The puncture needle 402 penetrates the through hole 502 from the bottom of the second circulating belt 5, thereby piercing the battery cell. The pressing and holding mechanism 6 can block the top of the battery cell, so that the battery cell will not be lifted up by the puncture needle 402, thereby preventing the puncture process from failing. The pressing and holding mechanism 6 can still adopt a circulating belt structure. In order to prevent the thickness of each batch of battery cells to be processed from being different, the setting height of the pressing and holding mechanism 6 in the liquid storage area 1 is configured to be adjustable, so that the height of the pressing and holding mechanism 6 can be adjusted in advance to ensure that the battery cell just passes under the pressing and holding mechanism 6.

[0057] Reference Figure 3-Figure 5 A buffer area 7 is also provided below the liquid storage area 1, which is located below the first circulating belt 401 and is preferably provided below the position of the second stroke 3. When the battery cell is punctured, the solid matter inside the battery cell can fall into the buffer area 7 when scattered, thereby facilitating the collection of the solid matter.

[0058] Further, see Figure 5The puncture mechanism 4 also includes a first support wall 403 fixedly arranged in the liquid storage area 1. The belt body of the first circulating belt 401 is arranged around the first support wall 403, so that the path is guided by the first support wall 403. The belt body of the first circulating belt 401 is composed of at least a plurality of guide plates 401a, and the plurality of guide plates 401a are hinged in sequence. The puncture needle 402 is slidably connected to the guide plate 401a, and the sliding direction is consistent with the vertical direction of the guide plate 401a. A reset spring 404 is also connected between the puncture needle 402 and the guide plate 401a, so that the puncture needle 402 is on the inner side of the guide plate 401a in normal state, that is, the first support On the inner side of the ring of the supporting wall 403, a second supporting wall 8 is fixedly arranged in the liquid storage area 1, which is used to support the belt body of the second circulating belt 5. A transverse gap is formed between the bottom of the first supporting wall 403 and the second supporting wall 8. The width of the gap is almost consistent with the thickness of the guide plate 401a, so that when the guide plate 401a reaches the gap, its direction remains horizontally fixed, so that the puncture needle 402 is stably in a vertical state, so as to be vertically inserted into the battery cell. A limiting wall 9 is fixedly arranged in the liquid storage area 1, which includes an inclined section 901 and a horizontal section 902. The angle between the wall surface of the inclined section 901 and the longitudinal direction is between 30° and 50°. Figure 5 As shown in the perspective, the first circulating belt 401 moves clockwise as a whole. When the guide plate 401a moves to the inclined section 901 with the puncture needle 402, the guide plate 401a is already in the gap, thereby maintaining horizontality, that is, the puncture needle 402 remains vertical, and the tail of the puncture needle 402 abuts against the wall of the inclined section 901. Figure 6 As shown in the perspective, the puncture needle 402 is pushed upward as a whole as it continues to move forward, and passes through the through hole 502, thereby vertically piercing into the battery cell that is moving to the right synchronously. The design of this part can effectively avoid the phenomenon of the needle tip being skewed, and the vertical piercing effect can reduce the aperture of the piercing hole on the battery cell to reduce the scattering of solid matter. When the puncture needle 402 moves to pass through the horizontal section 902, the puncture needle 402 maintains the current piercing state, thereby providing a certain time for puncture discharge. When the puncture needle 402 leaves the horizontal section 902, it is reset to the retracted state by the elastic force of the reset spring 404, thereby leaving the battery cell.

[0059] Further, see Figure 7The puncture needle 402 includes an inner needle rod 402a and an outer syringe 402b, the outer syringe 402b is freely sleeved on the outside of the inner needle rod 402a, and is slidably connected to the guide plate 401a, the inner needle rod 402a is constructed with an extrusion chamber 402c and a liquid inlet hole 402d, the extrusion chamber 402c is communicated with the tip of the outer syringe 402b, and is communicated with the outside through the liquid inlet hole 402d, the reset spring 404 is connected between the inner needle rod 402a and the guide plate 401a, and in normal state, due to the elastic force of the reset spring 404, the tail of the inner needle rod 402a is exposed outside the outer syringe 402b, that is, Figure 7 As shown in the perspective, the soaking liquid enters into the extrusion cavity 402c and the outer syringe 402b through the liquid inlet hole 402d and fills the inside of the extrusion cavity 402c and the outside of the outer syringe 402b. When the tail of the inner needle rod 402a is pushed by the inclined section 901, the entire puncture needle 402 is pushed upward to pierce the battery cell, and the inner needle rod 402a is squeezed into the outer syringe 402b as a whole. The space inside the outer syringe 402b is compressed, and the soaking liquid inside is squeezed out to the tip of the outer syringe 402b, and then squeezed into the puncture hole on the battery cell, so as to further prevent the formation of high temperature at the puncture hole, and at the same time have a cooling effect on the puncture needle 402 as a whole.

[0060] Reference Figure 7 Regarding the sliding connection between the outer syringe 402b and the guide plate 401a, specifically, the device also includes a connecting part 401b, which is detachably connected to the guide plate 401a, and the outer syringe 402b and the connecting part 401b are slidably matched to achieve the effect of maintaining relative sliding with the guide plate 401a. The connecting part 401b and the guide plate 401a can be threadedly connected to achieve a detachable effect. The detachable design allows the puncture needle 402 to be removed from the first circulating belt 401 as a whole, so that it is easy to replace after being corroded by the immersion liquid.

[0061] Reference Figure 3-Figure 6 A first protruding end 401c is constructed on the guide plate 401a, and the first protruding end 401c is used to extend into the through hole 502. On the entire second circulating belt 5, the distance between each adjacent two first protruding ends 401c is kept consistent with the distance between two adjacent through holes 502, so that the first protruding end 401c and the through hole 502 reach a meshing state, thereby achieving the effect of synchronous movement between the first circulating belt 401 and the second circulating belt 5, and keeping the linear speed consistent. Therefore, by providing driving force to one of the first circulating belt 401 or the second circulating belt 5, the two can be kept in synchronous operation at the same time, so as to simplify the overall structure of the equipment and reduce the manufacturing cost of the equipment.

[0062] Reference Figure 1-Figure 6 and Figure 8Regarding the power configuration of the first circulating belt 401 and the second circulating belt 5, specifically, the equipment also includes a driving roller 10, which is arranged to rotate relative to the liquid storage area 1, and the driving roller 10 is configured with a driving force. At least one place on the second circulating belt 5 forms a bend at the driving roller 10 and is supported by the driving roller 10. The driving roller 10 is evenly provided with second protruding ends 10a, which are meshed with the through holes 502, so that when the driving roller 10 rotates, it can drive the second circulating belt 5 to operate, thereby synchronously driving the operation of the first circulating belt 401. Specifically, a driving motor 11 can be fixedly arranged on the water tank forming the liquid storage area 1, and the driving motor 11 is connected to the driving roller 10, thereby providing a rotational driving force for the driving roller 10.

[0063] It will be appreciated that in the development of any actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but will be a routine task of design, fabrication, and production for those of ordinary skill having the benefit of this disclosure without undue experimentation.

[0064] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A discharging device for disassembling a power battery, characterized in that: The device comprises: A transport path, comprising a first journey (2) and a second journey (3), wherein the first journey (2) is longer than the second journey (3), and the battery cell reaches the second journey (3) from the first journey (2); A liquid storage area (1), the liquid storage area (1) being used to load soaking liquid, and the transport path passing through the liquid storage area (1); A puncture mechanism (4), comprising a first circulating belt (401) arranged at a fixed point relative to the liquid storage area (1), the first circulating belt (401) being close to the second stroke (3), and a puncture needle (402) arranged on the first circulating belt (401); The second circulating belt (5) is arranged at a fixed point relative to the liquid storage area (1) and is located at the lower side of the first circulating belt (401). The linear speed of the first circulating belt (401) is configured to be consistent with that of the second circulating belt (5). The surface of the second circulating belt (5) is evenly provided with placement grooves (501). The placement grooves (501) are provided with through holes (502). The through holes (502) are used for the puncture needle (402) to pass through. A pressing mechanism (6) is located at the second stroke (3) and on the upper side of the second circulating belt (5), and the pressing mechanism (6) acts on the battery core.

2. The power battery disassembly discharge device according to claim 1, characterized in that: A buffer zone (7) is provided below the liquid storage zone (1), and the buffer zone (7) is located below the first circulation belt (401).

3. The discharging device for disassembling a power battery according to claim 1, characterized in that: The puncture mechanism (4) further comprises a first support wall (403) fixedly arranged in the liquid storage area (1), the first support wall (403) being used to guide the path of the first circulating belt (401), the first circulating belt (401) comprising a plurality of guide plates (401a), the plurality of guide plates (401a) being hinged in sequence, the puncture needle (402) being slidably connected to the guide plates (401a), and a return spring (404) being connected to the guide plates (401a), the A second supporting wall (8) is fixedly arranged in the liquid storage area (1), the second supporting wall (8) being supported on the belt body of the second circulating belt (5), a gap being formed between the first supporting wall (403) and the second supporting wall (8), the width of the gap being consistent with the thickness of the guide plate (401a), a limiting wall (9) is fixedly arranged in the liquid storage area (1), the limiting wall (9) comprising an inclined section (901) and a horizontal section (902), the angle between the wall surface of the inclined section (901) and the longitudinal direction being between 30° and 50°.

4. The discharging device for disassembling a power battery according to claim 3, characterized in that: The puncture needle (402) comprises an inner needle rod (402a) and an outer needle tube (402b), wherein the outer needle tube (402b) is sleeved on the inner needle rod (402a), and the outer needle tube (402b) is slidably connected to the guide plate (401a). An extrusion chamber (402c) and a liquid inlet hole (402d) are constructed on the inner needle rod (402a), and the extrusion chamber (402c) is communicated with the tip of the outer needle tube (402b) and is connected to the outside through the liquid inlet hole (402d). The return spring (404) is connected between the inner needle rod (402a) and the guide plate (401a).

5. The power battery disassembly discharge device according to claim 4, characterized in that: It also comprises a connecting portion (401b), wherein the connecting portion (401b) is detachably connected to the guide plate (401a), and the outer syringe (402b) is slidably matched with the connecting portion (401b).

6. The power battery disassembly discharge device according to claim 3, characterized in that: A first protruding end (401c) is constructed on the guide plate (401a), and the first protruding end (401c) is used to extend into the through hole (502), and the distance between two adjacent first protruding ends (401c) is kept consistent with the distance between two adjacent through holes (502).

7. The discharging device for disassembling a power battery according to claim 1, characterized in that: The invention also comprises a driving roller (10), wherein the driving roller (10) and the liquid storage area (1) are arranged to rotate relative to each other, the driving roller (10) is provided with a driving force, at least one point on the second circulating belt (5) forms a return bend at the driving roller (10) and is supported by the driving roller (10), and the driving roller (10) is evenly provided with second protruding ends (10a), and the second protruding ends (10a) are meshed with the through holes (502).

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