Extraction device

Abstract

The utility model belongs to the technical field of battery module carrying, and discloses an extracting device which comprises a fixing assembly, a first clamping assembly and a second clamping assembly. The first clamping assembly is connected to one end of the fixing assembly and comprises an extracting part and an adjusting part, the extracting part can extend into one assembling hole of the battery module, and the adjusting part is connected to the extracting part and used for driving the extracting part to move relative to the fixing assembly; the extraction piece is in an extraction state of abutting against the hole wall of the assembly hole; the second clamping assembly is connected to the other end of the fixing assembly, the second clamping assembly and the first clamping assembly are arranged in a spaced mode, and the second clamping assembly can stretch into the other assembly hole of the battery module and is matched with the extracting piece to clamp the battery module. The extracting device provided by the utility model is used for carrying the battery module, the outer wall surface of the battery module cannot be damaged, and the extracting device has higher reliability and safety.

Description

Technical Field

[0001] The utility model relates to the technical field of battery module handling, in particular to an extraction device. Background Art

[0002] The assembly of lithium batteries is usually in a production line mode. For example, after the lithium battery module is assembled and produced offline on the production line, it is ready to be put into the box. In this process, the lithium battery module needs to be lifted from the transfer table and then transferred into the box for module locking.

[0003] In the prior art, the lifting of the lithium battery module is usually achieved by clamping the outer wall surface of the lithium battery module with a clamping jaw. The clamping jaw contacts the outer wall surface of the lithium battery module, and the force of the clamping jaw is relatively large, which will cause damage to the outer wall surface of the lithium battery module, thus affecting the finished product quality of the battery module. If the force of the clamping jaw is small, there is a risk of the lithium battery module falling, and the reliability is relatively low.

[0004] Therefore, there is an urgent need for an extraction device to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an extraction device that will not damage the outer wall surface of the battery module and has high reliability and safety.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] The extraction device includes:

[0008] A fixed component;

[0009] A first clamping component, connected to one end of the fixed component, includes an extraction piece and an adjusting piece. The extraction piece can extend into an assembly hole of the battery module, and the adjusting piece is connected to the extraction piece and used to drive the extraction piece to move relative to the fixed component, so that the extraction piece has an extraction state of abutting against the hole wall of the assembly hole.

[0010] A second clamping component, connected to the other end of the fixed component and spaced from the first clamping component, can extend into another assembly hole of the battery module and cooperate with the extraction piece to clamp the battery module.

[0011] Optionally, the fixed component includes a fixing piece and a hollow shaft connected to the fixing piece. The fixing piece is provided with a through hole communicating with the hollow shaft; the first clamping component further includes a connecting piece. One end of the connecting piece is connected to the extraction piece, and the other end of the connecting piece passes through the hollow shaft and the through hole and is connected to the adjusting piece;

[0012] When the extracting member is in an extracting state, the extracting member and the hollow shaft are eccentrically arranged.

[0013] Optionally, when the extraction member is in the extraction state, the axis of the extraction member is parallel to the axis of the hollow shaft, and the spacing range is 0.8mm-1.2mm.

[0014] Optionally, the end surface of the hollow shaft facing the extraction member is a first inclined surface, and the end surface of the extraction member facing the hollow shaft is a second inclined surface. When the extraction member is in the extraction state, the first inclined surface is pressed against the second inclined surface.

[0015] Optionally, the diameter of the hollow shaft is equal to the diameter of the extraction member.

[0016] Optionally, the first clamping assembly further includes a locking member, which is connected between the fixing assembly and the adjusting member and is used to lock the adjusting member so that the extracting member remains in the extracting state.

[0017] Optionally, a positioning member is coaxially arranged at one end of the extraction member away from the fixing assembly, the diameter of the positioning member is smaller than the diameter of the extraction member, and the positioning member is used to cooperate with a positioning hole of the box body.

[0018] Optionally, the structure of the second clamping assembly is the same as that of the first clamping assembly.

[0019] Optionally, the second inclined surface of the first clamping assembly is arranged at an angle to the second inclined surface of the second clamping assembly.

[0020] Optionally, the extraction device further comprises a gripping member, wherein the gripping member is disposed on a side of the fixing component away from the extraction member and is connected to the fixing component.

[0021] Beneficial effects of the utility model:

[0022] The utility model provides an extraction device, wherein a first clamping component comprises an adjusting member and an extraction member, wherein the extraction member can extend into the assembly hole of the battery module, and the adjusting member is used to adjust the position of the extraction member in the assembly hole so that the extraction member can abut against the hole wall of the assembly hole, and the second clamping component can also extend into the assembly hole of the battery module, and is different from the assembly hole where the extraction member is located, and both the first clamping component and the second clamping component are connected to the fixing component, so that the second clamping component can cooperate with the extraction member of the first clamping component to clamp the battery module, and since neither the extraction member nor the second clamping component will contact the outer wall surface of the battery module, the outer wall surface of the battery module will not be damaged, thereby ensuring the finished product quality of the battery module, and reducing the probability of the battery module falling during the clamping process, and having high reliability and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic structural view of the extraction device provided by an embodiment of the present utility model;

[0024] Figure 2 is a front view of the extraction device provided by an embodiment of the present utility model;

[0025] Figure 3 is a top view of the extraction device provided by an embodiment of the present utility model;

[0026] Figure 4 is the present utility model Figure 3 the A-A sectional view shown;

[0027] Figure 5 is a schematic view of the extraction member in the extraction state provided by an embodiment of the present utility model;

[0028] Figure 6 is a schematic view of the extraction member in the separated state provided by an embodiment of the present utility model;

[0029] Figure 7 is an assembly drawing of the adjusting member and the hollow shaft provided by an embodiment of the present utility model;

[0030] Figure 8 is a schematic structural view of the first clamping assembly provided by an embodiment of the present utility model;

[0031] Figure 9 is an exploded view of the extraction device provided by an embodiment of the present utility model.

[0032] In the figure:

[0033] 100, fixed assembly; 110, fixing member; 111, through hole; 120, hollow shaft; 121, first inclined surface; 122, large diameter section; 123, small diameter section; 130, connecting block; 200, first clamping assembly; 210, extraction member; 211, second inclined surface; 220, adjusting member; 230, connecting member; 240, positioning member; 250, nut; 260, gasket; 300, second clamping assembly; 400, gripping member; 500, gap; X, first direction; Y, second direction. Detailed implementation manners

[0034] The present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present utility model, rather than limiting the present utility model. Additionally, it should be noted that for the convenience of description, only the parts related to the present utility model are shown in the drawings, rather than all the structures.

[0035] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0036] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over", and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath", and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature.

[0037] In the description of this embodiment, the orientation or positional relationships such as "above", "below", "right", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0038] This embodiment provides an extraction device for extracting a battery module, which facilitates the battery module to be put into a box, is not easy to damage the battery module, and has high reliability.

[0039] It should be noted that the battery module usually has assembly holes. For example, the assembly holes are arranged on the top surface of the battery module. There are usually two assembly holes, and the two assembly holes are arranged at intervals in the width direction of the battery module. The assembly holes in this embodiment are the holes formed by the inner lining steel sleeves on the battery module.

[0040] As Figures 1 to 9 shown, the extraction device includes a fixing component 100, a first clamping component 200, and a second clamping component 300. Among them, the first clamping component 200 is connected to one end of the fixing component 100, specifically connected to one end in the length direction of the fixing component 100. And, as Figure 3As shown, the first clamping assembly 200 includes an extraction member 210 and an adjustment member 220. The extraction member 210 can extend into an assembly hole of the battery module. In this embodiment, the extraction member 210 is movably connected to the fixed assembly 100.

[0041] As Figure 4 shown, the adjustment member 220 is connected to the extraction member 210. In this embodiment, one end of the extraction member 210 is connected to the adjustment member 220, and the extraction member 210 extends along the second direction Y, where the second direction Y is perpendicular to the first direction X. The adjustment member 220 is used to drive the extraction member 210 to move relative to the fixed assembly 100, so that the extraction member 210 has an extraction state in which it abuts against the hole wall of the assembly hole, facilitating the extraction of the battery module. It should be noted that when the extraction member 210 abuts against the hole wall of the assembly hole, a frictional force can be generated between the extraction member 210 and the battery module. It should also be noted that the other end of the extraction member 210 can be inserted into the assembly hole and can abut against the hole wall of the assembly hole. It can be understood that the extraction member 210 also has a separation state in which it is separated from the hole wall of the assembly hole, and the adjustment member 220 drives the extraction member 210 to switch between the extraction state and the separation state. Among them, Figure 5 FIG. Figure 6 is a schematic diagram of the extraction member 210 in the extraction state,

[0042] FIG.

[0043] is a schematic diagram of the extraction member 210 in the separation state. It should be noted that the extraction member 210 can abut against the part of the hole wall of the assembly hole that is close to the second clamping assembly 300 in the first direction X, or can also abut against the part of the hole wall of the assembly hole that is away from the second clamping assembly 300 in the first direction X. Both can achieve the clamping of the battery module, and this embodiment does not limit this.

[0044] The extraction device provided in this embodiment, the first clamping assembly 200 includes an adjusting member 220 and an extraction member 210. The extraction member 210 can extend into the assembly hole of the battery module. The adjusting member 220 is used to adjust the position of the extraction member 210 in the assembly hole so that the extraction member 210 can abut against the hole wall of the assembly hole. The second clamping assembly 300 can also extend into the assembly hole of the battery module and is different from the assembly hole where the extraction member 210 is located. Both the first clamping assembly 200 and the second clamping assembly 300 are connected to the fixing assembly 100, so that the second clamping assembly 300 can cooperate with the extraction member 210 of the first clamping assembly 200 to clamp the battery module. Since neither the extraction member 210 nor the second clamping assembly 300 contacts the outer wall surface of the battery module, the outer wall surface of the battery module will not be damaged, ensuring the finished product quality of the battery module. It also reduces the probability of the battery module falling during clamping, with high reliability and safety.

[0045] Moreover, since the assembly hole is provided on the top surface of the battery module, when the extraction device clamps the battery module, the operation is performed from above the battery module, and neither the extraction member 210 of the extraction device nor the second clamping assembly 300 contacts the side surface of the battery module, enabling the outer wall surface of the battery module to smoothly contact the inner wall of the box body without affecting the battery module's entry into the box due to the setting of the extraction device. In the prior art, if the outer wall surface of the battery module is clamped by the clamping jaws, during the process of entering the box, before the bottom surface of the battery module contacts the bottom wall of the box body, in order to ensure the smooth entry of the battery module into the box, the clamping jaws need to release the battery module. At this time, the battery module falls into the box under the action of gravity, with a large vibration, which may have a greater impact on the performance of the battery module. In this embodiment, the extraction device can release the battery module after the bottom surface of the battery module contacts the bottom wall of the box body, enabling the battery module to enter the box more smoothly, further improving the reliability and safety of the battery module.

[0046] Optionally, as Figure 4 shown, the fixing assembly 100 includes a fixing member 110 and a hollow shaft 120 connected to the fixing member 110. Among them, the fixing member 110 extends along the first direction X, the axis direction of the hollow shaft 120 is the second direction Y, and moreover, the hollow shaft 120 is provided on one side of the fixing member 110 in the second direction Y. In this embodiment, the hollow shaft 120 is provided at the end of the fixing member 110. To improve the connection strength between the hollow shaft 120 and the fixing member 110, as Figure 9As shown, the fixing component 100 further includes a connecting block 130. The hollow shaft 120 is connected to the fixing member 110 through the connecting block 130. The connecting block 130 has a relatively large size, facilitating the setting of multiple bolts to connect the connecting block 130 and the fixing member 110. The fixing member 110 is provided with a through hole 111 communicating with the hollow shaft 120, and the fixing shaft passes through the connecting block 130. In this embodiment, the through hole 111 penetrates the fixing member 110 along the second direction Y. The fixing member 110 in this embodiment can be a fixing plate.

[0047] The first clamping component 200 in this embodiment further includes a connecting member 230. One end of the connecting member 230 is connected to the extraction member 210, and the other end of the connecting member 230 passes through the hollow shaft 120 and the through hole 111 and is connected to the adjusting member 220. That is, the adjusting member 220 is disposed on the side of the fixing member 110 facing away from the hollow shaft 120. The adjusting member 220 can drive the connecting member 230 to move, and further mobilize the extraction member 210 to move, so that the extraction member 210 can be in an extraction state where it abuts against the hole wall of the assembly hole and a separation state where it is separated from the hole wall of the assembly hole. In this embodiment, the connecting member 230 is coaxially connected to the extraction member 210.

[0048] In some alternative embodiments, when the extraction member 210 is in the extraction state, as Figure 5 shown, the extraction member 210 is eccentrically arranged with respect to the hollow shaft 120. That is, the axis of the extraction member 210 does not coincide with the axis of the hollow shaft 120. In this embodiment, the axis of the hollow shaft 120 is referred to as the first axis L1, and the axis of the extraction member 210 is referred to as the second axis L2. By eccentrically arranging the extraction member 210 with respect to the hollow shaft 120, the extraction member 210 moves relative to the hollow shaft 120. Specifically, it means that the extraction member 210 rotates relative to the hollow shaft 120, so that when the extraction member 210 abuts against the hole wall of the assembly hole, the hollow shaft 120 extending into the assembly hole does not contact the hole wall of the assembly hole, so that the hollow shaft 120 only provides the function of limiting the extraction member 210 and does not have the function of clamping the battery module, facilitating the hollow shaft 120 to penetrate into or be pulled out of the assembly hole. In this embodiment, the extraction member 210 abuts against the end face of the hollow shaft 120 at the end away from the fixing member 110 to realize the limitation of the extraction member 210 by the hollow shaft 120.

[0049] Exemplarily, in this embodiment, when the extraction member 210 is in the extraction state, the axis of the extraction member 210 is parallel to the axis of the hollow shaft 120, and both extend along the second direction Y. Moreover, the distance range between the axis of the extraction member 210 and the axis of the hollow shaft 120 is 0.8 mm - 1.2 mm, that is, the distance range between the first axis L1 and the second axis L2 in the first direction X is 0.8 mm - 1.2 mm. For example, the distance between the axis of the extraction member 210 and the axis of the hollow shaft 120 is 0.8 mm, 0.9 mm, 1.0 mm, 1.2 mm, and this embodiment does not limit this.

[0050] In some alternative embodiments, as Figure 7 shown, the end face of the hollow shaft 120 facing the extraction member 210 is the first inclined surface 121, as Figure 8 shown, the end face of the extraction member 210 facing the hollow shaft 120 is the second inclined surface 211, as Figure 5 shown, when the extraction member 210 is in the extraction state, the first inclined surface 121 abuts against the second inclined surface 211. By providing the first inclined surface 121 and the second inclined surface 211, on the one hand, the hollow shaft 120 limits the extraction member 210, and on the other hand, the extraction member 210 can rotate slightly relative to the hollow shaft 120, avoiding the extraction member 210 from breaking due to excessive torque caused by a large difference between the extraction member 210 and the hollow shaft 120, and further improving the reliability of the extraction device.

[0051] As Figure 6 shown, when the extraction member 210 is in the separation state, the first inclined surface 121 can be parallel to the second inclined surface 211. At this time, a gap 500 is formed between the first inclined surface 121 and the second inclined surface 211, and this gap 500 is the space for the extraction member 210 to rotate relative to the hollow shaft 120. Exemplarily, when the extraction member 210 is in the separation state, the axis of the extraction member 210 can coincide with the axis of the hollow shaft 120, and this embodiment does not limit this.

[0052] Of course, it can be understood that when the extraction member 210 is in the separation state, the first inclined surface 121 may not be parallel to the second inclined surface 211, and this embodiment does not limit this.

[0053] Optionally, the assembly hole is usually a cylindrical hole. Therefore, both the hollow shaft 120 and the extraction member 210 in this embodiment are cylindrical. The diameter of the hollow shaft 120 in this embodiment is equal to the diameter of the extraction member 210, so that when the extraction member 210 is in the extraction state, the first inclined surface 121 and the second inclined surface 211 can have a larger contact area, thereby improving the limiting effect on the extraction member 210 and enabling the extraction member 210 to remain in a state of abutting against the hole wall of the assembly hole.

[0054] Further optionally, asFigure 9 As shown, the hollow shaft 120 may include a large-diameter section 122 and a small-diameter section 123 that are coaxially arranged and communicate with each other. The first inclined surface 121 is provided on the small-diameter section 123, and the large-diameter section 122 is connected to the fixing member 110. Among them, the diameter of the large-diameter section 122 is larger than the diameter of the small-diameter section 123.

[0055] In this embodiment, the adjusting member 220 can be driven manually by a person or by mechanical equipment, and this embodiment does not limit this. For the convenience of driving the adjusting member 220, the adjusting member 220 can be set in a disc shape, and the outer peripheral surface of the adjusting member 220 can be provided with anti-slip patterns and the like.

[0056] In some alternative embodiments, the adjusting member 220 has a self-locking function. For example, the adjusting member 220 rotates relative to the fixing member 110 to drive the extraction member 210 to rotate relative to the hollow shaft 120 through the connecting member 230. When the extraction member 210 rotates to the extraction state, the adjusting member 220 can be locked on the fixing member 110, such as being locked on the fixing member 110 through the cooperation of a tooth and a groove. For example, the surface of the adjusting member 220 facing the fixing member 110 is provided with a plurality of protrusions, and the surface of the fixing member 110 facing the adjusting member 220 is provided with a plurality of grooves corresponding to the protrusions. The position of the adjusting member 220 relative to the connecting member 230 in the second direction Y is movable. When the protrusions of the adjusting member 220 are all located in the corresponding grooves, the adjusting member 220 cannot rotate relative to the fixing member 110, achieving locking and keeping the extraction member 210 in the extraction state; when the adjusting member 220 moves relative to the connecting member 230 in the second direction Y to make the protrusions withdraw from the grooves, the adjusting member 220 can rotate relative to the fixing member 110 to drive the extraction member 210 to rotate through the connecting member 230.

[0057] In some other alternative embodiments, the adjusting member 220 may not have a self-locking function and is still locked on the fixing member 110 of the fixing assembly 100 through a locking member. That is, the first clamping assembly 200 further includes a locking member, and the locking member is connected between the fixing assembly 100 and the adjusting member 220 and is used to lock the adjusting member 220 to keep the extraction member 210 in the extraction state. For example, as Figure 9As shown, the locking member can be a locking nut. The connecting member 230 is fixedly inserted through the adjusting member 220 and passes out from the surface of the adjusting member 220 facing away from the fixing member 110. The connecting member 230 has an external thread, and the locking nut 250 is screwed onto the connecting member 230. By rotating the locking nut 250, the locking nut 250 can clamp and fix the adjusting member 220 between the fixing member 110 and the locking nut 250, so that the adjusting member 220 no longer rotates, thereby realizing the locking of the extracting member 210. Optionally, a gasket 260 can be provided between the locking nut and the adjusting member 220. For another example, the locking member can include a locking pin provided on the fixing member 110 and an electromagnetic driver for driving the locking pin to move in the second direction Y. The adjusting member 220 can be provided with a locking hole. When the adjusting member 220 rotates until the extracting member 210 abuts against the hole wall of the assembly hole, the electromagnetic driving member drives the locking pin to extend into the locking hole to prevent the adjusting member 220 from rotating, thereby realizing the locking of the extracting member 210. Of course, it can be understood that the locking member can also be other structures, such as the cooperation of the convex and concave grooves mentioned above, and this embodiment does not limit this.

[0058] It should be noted that the sum of the dimensions of the hollow shaft 120 and the extracting member 210 in the second direction Y can be greater than or equal to the height of the battery module. The assembly hole of the battery module penetrates the battery module along the height direction of the battery module. At this time, the end of the extracting member 210 facing away from the hollow shaft 120 can be flush with the bottom surface of the battery module or protrude from the bottom surface of the battery module. Exemplarily, as Figures 4 to 6 shown, a positioning member 240 is coaxially provided at the end of the extracting member 210 facing away from the fixing assembly 100. Among them, the diameter of the positioning member 240 is smaller than the diameter of the extracting member 210. The positioning member 240 is used to cooperate with the positioning hole of the box body, realizing the pre-assembly before the battery module is installed in the box body. Furthermore, during the process of the battery module being carried by the extracting device, the module can be quickly aligned with the box-in position, reducing the actions of putting it into the box, thereby saving the process time and improving the box-in efficiency.

[0059] Optionally, the structure of the second clamping assembly 300 is the same as that of the first clamping assembly 200. That is, the second clamping assembly 300 also includes an extracting member 210, a connecting member 230, and an adjusting member 220. At this time, there are two hollow shafts 120. One hollow shaft 120 is connected to one end of the fixing member 110, and the other hollow shaft 120 is connected to the other end of the fixing member 110. Two through holes 111 are also correspondingly provided. The connecting members 230 of the two second clamping assemblies 300 pass through the two hollow shafts 120 and the two through holes 111 respectively, realizing the connection between the second clamping assembly 300 and the fixing assembly 100.

[0060] By providing the second clamping assembly 300, the extraction members 210 of the first clamping assembly 200 and the second clamping assembly 300 can be close to or away from each other, so as to cooperate with each other to clamp the battery module, thereby reducing the distance between each extraction member 210 and the hollow shaft 120. Figure 4 As shown, the first clamping assembly 200 and the second clamping assembly 300 are symmetrically arranged, so that the first clamping assembly 200 and the second clamping assembly 300 can be subjected to force more evenly, and the fixing member 110 can also be subjected to force more evenly, which facilitates lifting the battery module and the extraction device through the fixing member 110.

[0061] In some optional embodiments, the second inclined surface 211 of the first clamping assembly 200 and the second inclined surface 211 of the second clamping assembly 300 are arranged at an angle, that is, the second inclined surface 211 of the first clamping assembly 200 and the second inclined surface 211 of the first clamping assembly 200 are not arranged in parallel, but are arranged at an angle, and the first inclined surface 121 of the first clamping assembly 200 and the first inclined surface 121 of the second clamping assembly 300 are also arranged at an angle. In this way, it is ensured that the two extractors 210 can move toward or away from each other when rotating relative to the hollow shaft 120, and the forces acting on the battery module on the two extractors 210 are opposite, so as to smoothly clamp the battery module and improve the clamping effect.

[0062] Alternatively, if Figure 1 , Figure 2 and Figure 4 As shown, the extraction device further includes a gripping member 400, which is disposed on a side of the fixing assembly 100 away from the extraction member 210 and connected to the fixing assembly 100. By providing the gripping member 400, it is possible to facilitate the gripping of the extraction device. Specifically, the gripping member 400 is connected to the fixing member 110. The gripping member 400 may be U-shaped, with both ends of the gripping member 400 spaced apart in the first direction X and both connected to the fixing member 110, so that the fixing member 110 can be subjected to a relatively uniform force.

[0063] The extraction device provided in the present embodiment has a small overall volume and weight, a simple structure, and is convenient for operators to operate flexibly, thereby improving the efficiency of battery module packaging and greatly improving the problems in the current production process; moreover, the fixing component 100, the first clamping component 200 and the second clamping component 300 are all sharpened and chamfered and deburred, which can effectively avoid damaging the end plate of the battery module and has high safety; the extraction device provided in the present embodiment, by providing an extraction member 210 that can rotate relative to the hollow shaft 120, can be well compatible with battery modules with tolerances within a certain range and has good flexibility.

[0064] The steps of using the extraction device provided in this embodiment are as follows:

[0065] ①Before operation, check whether the adjusting part 220 and the extracting part 210 can cooperate flexibly, and whether the adjusting part 220 can be locked;

[0066] ②Two operators respectively insert the hollow shafts 120 of the first clamping assembly 200 and the second clamping assembly 300 of the extraction device into the end plate holes of the battery module. They freely fall into the end plate holes. The small-diameter section 123 of the hollow shaft 120 penetrates into the end plate hole, and the end face of the large-diameter section 122 of the hollow shaft 120 facing the small-diameter section 123 is in full contact with the end face of the battery module;

[0067] ③Operate the adjusting part 220 to make the extracting part 210 expand and contract in the first direction X, so that the extended part of the extracting part 210 is completely misaligned with the hollow shaft 120, that is, the hollow shaft 120 and the extracting part 210 are eccentric, until the adjusting part 220 cannot be rotated;

[0068] ④Slightly lift the battery module and check whether there are signs of sliding;

[0069] ⑤After the inspection operation is completed, the two operators lift the two groups of battery modules and transfer them to the inside of the box; each group of battery modules corresponds to two positioning parts 240;

[0070] ⑥Align the positioning parts 240 at the bottom of the extracting part 210 with the hole positions on the bottom wall of the box. After all four positioning parts 240 are aligned with the four hole positions, slowly loosen the adjusting part 220, and the battery module stably enters the box;

[0071] ⑦After the battery module is placed in the box, take out the extraction device from the battery module in the vertical direction (i.e., the second direction Y).

[0072] Obviously, the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to list all the implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Extraction device, characterized in that, include: A fixing assembly (100); A first clamping component (200) is connected to one end of the fixing component (100), and comprises an extracting member (210) and an adjusting member (220); the extracting member (210) can extend into an assembly hole of the battery module; the adjusting member (220) is connected to the extracting member (210) and is used to drive the extracting member (210) to move relative to the fixing component (100), so that the extracting member (210) is in an extraction state in which it abuts against the hole wall of the assembly hole; The second clamping assembly (300) is connected to the other end of the fixing assembly (100) and is spaced apart from the first clamping assembly (200). The second clamping assembly (300) can extend into another assembly hole of the battery module and cooperate with the extraction member (210) to clamp the battery module.

2. The extraction device according to claim 1, wherein The fixing assembly (100) comprises a fixing member (110) and a hollow shaft (120) connected to the fixing member (110), wherein the fixing member (110) is provided with a through hole (111) communicating with the hollow shaft (120); the first clamping assembly (200) further comprises a connecting member (230), wherein one end of the connecting member (230) is connected to the extracting member (210), and the other end of the connecting member (230) passes through the hollow shaft (120) and the through hole (111), and is connected to the adjusting member (220); When the extraction member (210) is in an extraction state, the extraction member (210) and the hollow shaft (120) are eccentrically arranged.

3. The extraction device according to claim 2, wherein When the extraction member (210) is in an extraction state, the axis of the extraction member (210) is parallel to the axis of the hollow shaft (120), and the spacing range is 0.8 mm-1.2 mm.

4. The extraction device according to claim 2, characterized in that, The end surface of the hollow shaft (120) facing the extraction member (210) is a first inclined surface (121), and the end surface of the extraction member (210) facing the hollow shaft (120) is a second inclined surface (211). When the extraction member (210) is in the extraction state, the first inclined surface (121) is pressed against the second inclined surface (211).

5. The extraction device according to claim 2, wherein The diameter of the hollow shaft (120) is equal to the diameter of the extraction member (210).

6. The extraction device according to claim 1, wherein, The first clamping assembly (200) further comprises a locking member, which is connected between the fixing assembly (100) and the adjusting member (220) and is used to lock the adjusting member (220) so that the extracting member (210) remains in the extracting state.

7. The extraction device according to claim 1, characterized in that A positioning member (240) is coaxially arranged at one end of the extraction member (210) away from the fixing assembly (100); the diameter of the positioning member (240) is smaller than the diameter of the extraction member (210); and the positioning member (240) is used to cooperate with a positioning hole of the box body.

8. The extraction device according to any one of claims 1-7, characterized in that, The structure of the second clamping assembly (300) is the same as that of the first clamping assembly (200).

9. The extraction device according to claim 8, wherein, The second inclined surface (211) of the first clamping assembly (200) and the second inclined surface (211) of the second clamping assembly (300) are arranged at an angle.

10. The extraction device according to claim 1, characterized in that, The extraction device further comprises a gripping member (400), wherein the gripping member (400) is disposed on a side of the fixing component (100) away from the extraction member (210) and is connected to the fixing component (100).

Images