Dust removal device and dust removal system for battery pole piece

Abstract

The utility model belongs to the technical field of battery production and manufacturing, and particularly relates to a battery pole piece dust removal device and a dust removal system.The battery pole piece dust removal device comprises a base and two dust removal bodies, and the two dust removal bodies are arranged on the base in the length direction of the battery pole piece dust removal device in the mode that the two dust removal bodies can be close to each other or away from each other; each dust removal body is provided with a groove, a negative pressure channel and two airflow channels, an air outlet of each airflow channel is located in the side wall of the groove and extends in the width direction of the battery pole piece dust removal device, and an air inlet of each airflow channel is located in at least one side of the dust removal body; according to the technical scheme, airflow can be blown to the edge of the battery pole piece in the groove through the air outlet of the airflow channel, and dust particles on the edge of the battery pole piece are removed, so that the poor Hi-pot test of a battery cell is effectively reduced, and the quality of the battery cell is improved; and the airflow can cover and remove dust particles on the battery pole piece in the width range of the whole groove.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery production and manufacturing, and particularly relates to a dust removal device and a dust removal system for battery electrodes. Background Technique

[0002] As a new type of secondary battery, lithium-ion batteries have the advantages of high energy density and power density, high working voltage, light weight, small size, long cycle life, good safety, and environmental friendliness, and have broad application prospects in portable electrical appliances, power tools, large-scale energy storage, electric vehicle power sources, etc.

[0003] In the production process of battery electrodes, it is generally necessary to cut the battery electrodes to meet specific size and specification requirements. However, during the cutting process of battery electrodes, powder dust will be generated, and these dust powders are extremely tiny. These dust particles may adhere to the edges of the battery electrodes, especially the edges after cutting, thus causing poor Hi-pot testing of the battery cells. Content of the Utility Model

[0004] The purpose of the utility model is to provide a dust removal device and a dust removal system for battery electrodes in view of the deficiencies of the prior art, and solve the technical problem that in the production of battery electrodes in the prior art, tiny dust will be generated during the cutting process, and these dusts may adhere to the edges of the cut electrodes, resulting in unqualified Hi-pot testing of the battery cells.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] In the first aspect, the utility model provides a dust removal device for battery electrodes, including a base and two dust removal bodies. Along the length direction of the dust removal device for battery electrodes, the two dust removal bodies are arranged on the base so as to be able to approach or move away from each other. Each dust removal body is provided with a groove, a negative pressure channel, and two air flow channels. The openings of the grooves of the two dust removal bodies are arranged opposite to each other. The negative pressure channel and the two air flow channels are both communicated with the groove. The negative pressure port of the negative pressure channel is located on the bottom wall of the groove. Along the height direction of the dust removal device for battery electrodes, the two air flow channels are arranged opposite to each other on both sides of the groove. The air outlet of each air flow channel is located on the side wall of the groove and extends along the width direction of the dust removal device for battery electrodes. The air inlet of each air flow channel is located on at least one side of the dust removal body.

[0007] Preferably, along the width direction of the dust removal device for battery electrodes, the distance between the end point of the air outlet and the side surface of the dust removal body is G, satisfying the relational expression: 1≤G≤1.5mm.

[0008] Preferably, each of the air flow channels includes an intake channel and an outlet channel that are connected in sequence. The intake port is provided on the intake channel, the outlet port is provided on the outlet channel, and the outlet channel communicates with the groove through the outlet port.

[0009] Preferably, the outlet direction of the outlet channel inclines towards the direction of the negative pressure channel.

[0010] Preferably, the outlet directions of the outlet channels of the two air flow channels form an intersection point on the center line of the negative pressure channel, and the included angle between the outlet directions of the outlet channels of the two air flow channels is α, satisfying the relational expression: 115° ≤ α ≤ 125°.

[0011] Preferably, the size of the cross-section of the intake channel in the length direction of the battery electrode sheet dust removal device is D, and the size of the cross-section of the outlet channel in the length direction of the battery electrode sheet dust removal device is J, satisfying the relational expression: J ≤ D.

[0012] Preferably, along the length direction of the battery electrode sheet dust removal device, the width of the outlet port is H, satisfying the relational expression: 1 ≤ H ≤ 2 mm.

[0013] Preferably, on one side of each dust removal body away from the groove, an adjustment slider is provided. An adjustment hole is provided on the adjustment slider, and a mounting hole corresponding to the position of the adjustment hole is provided on the base. The battery electrode sheet dust removal device further includes a fixing member. The fixing member passes through the adjustment hole and is detachably connected to the mounting hole. Along the length direction of the battery electrode sheet dust removal device, the adjustment hole is slidably connected to the fixing member.

[0014] Preferably, the negative pressure channel is connected to a negative pressure pipe, and one end of the negative pressure pipe away from the negative pressure channel is connected to a pump body.

[0015] In a second aspect, the present invention provides a dust removal system, including a transmission mechanism and the battery electrode sheet dust removal device of the above embodiment. The transmission mechanism is arranged on one side of the battery electrode sheet dust removal device, and the transmission mechanism is used to extend the edge of the battery electrode sheet into the groove and can be transmitted along the width direction of the battery electrode sheet dust removal device.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0017] The dust removal device for battery electrodes of the present utility model, through the combined use of a base and a dust removal body, along the length direction of the dust removal device for battery electrodes, the two dust removal bodies can approach or move away from each other, effectively enabling the distance between the two dust removal bodies to be adjusted according to the size specifications of the battery electrodes, so as to meet the dust removal requirements of battery electrodes of different models or sizes, and improving the versatility and flexibility of the device. By providing grooves, negative pressure channels and air flow channels on each dust removal body, the two air flow channels are oppositely arranged on both sides of the groove, and the air outlet of each air flow channel is located on the side wall of the groove. Air flow can blow air to the edge of the battery electrode located in the groove through the air outlet of the air flow channel, removing dust particles on the edge of the battery electrode, and the removed dust particles are taken away through the negative pressure channel, thereby effectively reducing the non-conformance of the cell Hi-pot test and improving the quality of the cell. In addition, the air outlet of the air flow channel extends along the width direction of the dust removal device for battery electrodes to ensure that the air flow can cover and remove the dust particles on the battery electrode within the entire width range of the groove.

[0018] Additional aspects and advantages of the present utility model will be given in part in the following description, will become apparent in part from the following description, or will be understood through the practice of the present utility model. Brief Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or in the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic structural diagram of the dust removal system of the present utility model.

[0021] Figure 2 It is a schematic structural diagram of the dust removal device for battery electrodes of the present utility model.

[0022] Figure 3 It is a sectional view of the dust removal device for battery electrodes of the present utility model.

[0023] Figure 4 It is Figure 3 The enlarged structural diagram at A in

[0024] Figure 5 It is a schematic structural diagram of the dust removal body of the present utility model.

[0025] Figure 6 It is a sectional view of the dust removal body of the present utility model.

[0026] Among them, the description of the reference numerals is as follows:

[0027] 100. Dust removal system;

[0028] 10. Battery electrode sheet dust removal device; 11. Base; 111. Mounting hole; 12. Dust removal body; 121. Groove; 122. Negative pressure channel; 1221. Negative pressure port; 123. Air flow channel; 1231. Air inlet; 1232. Air outlet; 1233. Air inlet channel; 1234. Air outlet channel; 13. Adjusting slider; 131. Adjusting hole; 14. Fixing piece; 15. Negative pressure pipe;

[0029] 20. Transmission mechanism;

[0030] 200. Battery electrode sheet;

[0031] a. Length direction of the battery electrode sheet dust removal device; b. Width direction of the battery electrode sheet dust removal device; c. Height direction of the battery electrode sheet dust removal device; d. Air outlet direction of the air outlet channel; e. Center line of the negative pressure channel. Detailed implementation mode

[0032] As used in the specification and claims, certain terms are used to refer to specific components. Those skilled in the art should understand that hardware manufacturers may use different terms to refer to the same component. The specification and claims do not use the difference in names as a way to distinguish components, but use the difference in functions of components as the criterion for distinction. As mentioned throughout the specification and claims, "including" is an open term and should be interpreted as "including but not limited to". "Substantially" means within an acceptable error range. Those skilled in the art can solve technical problems within a certain error range and basically achieve the technical effect.

[0033] In addition, terms such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0034] In the utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the utility model can be understood according to specific situations.

[0035] The following will be combined with the attached Figures 1 to 6The technical solutions in the embodiments of the present utility model are clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0036] Please refer to Figures 1 to 6 , the dust removal system 100 of the embodiment of the present utility model includes a transmission mechanism 20 and a battery electrode sheet dust removal device 10. The transmission mechanism 20 is arranged on one side of the battery electrode sheet dust removal device 10. The transmission mechanism 20 is used to convey the battery electrode sheet 200 along the width direction b of the battery electrode sheet dust removal device 10 to the battery electrode sheet dust removal device 10.

[0037] In some embodiments, the transmission mechanism 20 can be a robotic arm. The robotic arm conveys the battery electrode sheet 200 to the battery electrode sheet dust removal device 10 through a vacuum chuck.

[0038] Please refer to Figures 1 to 6 , the battery electrode sheet dust removal device 10 of the embodiment of the present utility model includes a base 11 and two dust removal bodies 12. Along the length direction a of the battery electrode sheet dust removal device 10, the two dust removal bodies 12 are arranged on the base 11 so as to be able to approach or separate from each other. Each dust removal body 12 is provided with a groove 121, a negative pressure channel 122 and two air flow channels 123. The openings of the grooves 121 of the two dust removal bodies 12 are arranged opposite to each other. The negative pressure channel 122 and the two air flow channels 123 are both communicated with the groove 121. The negative pressure port 1221 of the negative pressure channel 122 is located on the bottom wall of the groove 121. Along the height direction c of the battery electrode sheet dust removal device 10, the two air flow channels 123 are arranged opposite to each other on both sides of the groove 121. The air outlet 1232 of each air flow channel 123 is located on the side wall of the groove 121 and extends along the width direction b of the battery electrode sheet dust removal device 10. The air inlet 1231 of each air flow channel 123 is located on at least one side of the dust removal body 12.

[0039] Compared with the prior art, in the battery electrode sheet dust removal device 10 according to the embodiment of the present utility model, through the combined use of the base 11 and the dust removal body 12, along the length direction a of the battery electrode sheet dust removal device 10, the two dust removal bodies 12 can approach or move away from each other, effectively enabling the distance between the two dust removal bodies 12 to be adjusted according to the size specifications of the battery electrode sheet 200, so as to meet the dust removal requirements of battery electrode sheets 200 of different models or sizes, and improving the versatility and flexibility of the device. By providing a groove 121, a negative pressure channel 122 and an air flow channel 123 on each dust removal body 12, the two air flow channels 123 are oppositely arranged on both sides of the groove 121, and the air outlet 1232 of each air flow channel 123 is located on the side wall of the groove 121. Air flow can blow air to the edge of the battery electrode sheet 200 located in the groove 121 through the air outlet 1232 of the air flow channel 123, removing the dust particles on the edge of the battery electrode sheet 200, and the removed dust particles are carried away through the negative pressure channel 122, thereby effectively reducing the poor performance of the cell Hi-pot test and improving the quality of the cell. In addition, the air outlet 1232 of the air flow channel 123 extends along the width direction b of the battery electrode sheet dust removal device 10 to ensure that the air flow can cover and remove the dust particles on the battery electrode sheet 200 within the entire width range of the groove 121.

[0040] It can be understood that since the groove 121 is used to cooperate with the edge of the battery electrode sheet 200, during the process of the transmission mechanism 20 conveying the battery electrode sheet 200, the edge of the battery electrode sheet 200 extends into the groove 121, and there is a gap between the battery electrode sheet 200 and the groove 121 to ensure the dust removal effect on the battery electrode sheet 200.

[0041] Please refer to Figure 3 , specifically, along the length direction a of the battery electrode sheet dust removal device 10, the distance F between the edge of the battery electrode sheet 200 and the air outlet 1232 is 2 mm. This effectively avoids the situation that the distance F between the edge of the battery electrode sheet 200 and the air outlet 1232 is too far, resulting in the air flow being unable to cover and remove the dust particles on the battery electrode sheet 200 within the entire width range of the groove 121.

[0042] Please refer to Figure 5, in some embodiments, along the width direction b of the battery electrode sheet dust removal device 10, the distance G between the end point of the air outlet 1232 and the side surface of the dust removal body 12 satisfies the relational expression: 1 ≤ G ≤ 1.5 mm. By setting the distance G between the end point of the air outlet 1232 and the side surface of the dust removal body 12, this distance G cannot be too large or too small. When this distance G is too large, that is, G > 1.5 mm, the distance between the end point of the air outlet 1232 and the side surface of the dust removal body 12 is relatively far, resulting in a shorter length of the air outlet 1232, which may cause the air flow to not fully cover the battery electrode sheet 200 within the width range of the entire groove 121, affecting the dust removal effect of the battery electrode sheet 200. When this distance G is too small, that is, G < 1 mm, although it can ensure that the air outlet 1232 has sufficient length, the distance between the end point of the air outlet 1232 and the side surface of the dust removal body 12 is relatively close, resulting in a thinner wall thickness at this distance, with poor structural strength and being prone to breakage during grooving.

[0043] Therefore, setting the distance G to satisfy the relational expression: 1 ≤ G ≤ 1.5 mm can effectively ensure the dust removal effect of the battery electrode sheet 200, and at the same time can also ensure the structural strength of the wall thickness at this distance, avoiding breakage during the grooving process due to a thinner wall thickness.

[0044] Specifically, the distance G between the end point of the air outlet 1232 and the side surface of the dust removal body 12 is 1 mm, 1.1 mm, 1.13 mm, 1.15 mm, 1.2 mm, 1.25 mm, 1.27 mm, 1.3 mm, 1.34 mm, 1.38 mm, 1.4 mm, 1.41 mm, 1.46 mm or 1.5 mm, but is not limited to the listed values, and other values within the numerical range are equally applicable.

[0045] Please refer to Figures 3 to 5 , in some embodiments, each of the air flow channels 123 includes an intake channel 1233 and an outlet channel 1234 that are connected in sequence. The air inlet 1231 is provided on the intake channel 1233, the air outlet 1232 is provided on the outlet channel 1234, and the outlet channel 1234 communicates with the groove 121 through the air outlet 1232. Through the combined use of the intake channel 1233 and the outlet channel 1234, with the air inlet 1231 provided on the intake channel 1233 and the air outlet 1232 provided on the outlet channel 1234, the air flow enters the intake channel 1233 through the air inlet 1231, then enters the outlet channel 1234, and blows the air flow towards the edge of the battery electrode sheet 200 located in the groove 121 through the air outlet 1232 of the outlet channel 1234 to remove the dust particles on the edge of the battery electrode sheet 200.

[0046] Please refer to Figure 6, in some embodiments, the outlet direction d of the air outlet channel 1234 inclines towards the negative pressure channel 122. By inclining the outlet direction d of the air outlet channel 1234 towards the negative pressure channel 122, the airflow can effectively blow the dust particles on the edge of the battery electrode plate 200 towards the negative pressure channel 122, increasing the possibility of the dust being sucked into the negative pressure channel 122 and collected.

[0047] Please refer to Figure 6 , in some embodiments, the outlet directions d of the air outlet channels 1234 of the two air flow channels 123 form an intersection point on the center line e of the negative pressure channel 122, and the included angle between the outlet directions d of the air outlet channels 1234 of the two air flow channels 123 is α, satisfying the relation: 115° ≤ α ≤ 125°. By forming an intersection point of the outlet directions d of the air outlet channels 1234 of the two air flow channels 123 on the center line e of the negative pressure channel 122 and forming the included angle α, the collection efficiency of the dust particles and the dust removal effect of the negative pressure channel 122 are effectively improved, and the possibility of dust escape is reduced.

[0048] Specifically, the included angle α is 115°, 116°, 117°, 118°, 119°, 120°, 121°, 122°, 123°, 124° or 125°, but is not limited to the listed values, and other values within the numerical range are equally applicable. Preferably, the included angle α is 120°.

[0049] Please refer to Figures 3 to 4 , in some embodiments, the size of the cross-section of the air inlet channel 1233 in the length direction a of the battery electrode plate dust removal device 10 is D, and the size of the cross-section of the air outlet channel 1234 in the length direction a of the battery electrode plate dust removal device 10 is J, satisfying the relation: J ≤ D. Since the size of the cross-section through which the airflow flows from the air inlet channel 1233 to the air outlet channel 1234 decreases, the airflow will be compressed to a certain extent when passing through the air outlet channel 1234, thereby increasing the pressure and speed of the airflow. This enhanced airflow can better impact and strip the dust particles on the edge of the battery electrode plate 200, improving the dust removal effect.

[0050] Please refer to Figures 3 to 5, in some embodiments, along the length direction a of the battery electrode sheet dust removal device 10, the width of the air outlet 1232 is H, satisfying the relational expression: 1 ≤ H ≤ 2 mm. By setting the width of the air outlet 1232, the width H of the air outlet 1232 cannot be too large or too small. When the width H of the air outlet 1232 is too large, that is, H > 2 mm, the air volume of the air flow in the air outlet channel 1234 blowing towards the edge of the battery electrode sheet 200 is relatively large. Since the battery electrode sheet 200 is relatively thin, it is easy to damage the battery electrode sheet 200, resulting in deformation of the edge of the battery electrode sheet 200. When the width H of the air outlet 1232 is too small, that is, H < 1 mm, the air volume of the air flow in the air outlet channel 1234 blowing towards the edge of the battery electrode sheet 200 is relatively small, resulting in a poor dust removal effect on the edge of the battery electrode sheet 200.

[0051] Therefore, the width H of the air outlet 1232 satisfies the relational expression: 1 ≤ H ≤ 2 mm. This not only ensures the concentration of the air flow but also ensures a sufficient air flow through - volume, effectively ensuring the dust - particle removal effect on the edge of the battery electrode sheet 200.

[0052] In some embodiments, the air inlet 1231 is connected with an air - flow regulating device, and the air - flow regulating device is used to regulate the flow rate and flow volume of the air flow entering the air - flow channel 123, so as to ensure that the air flow blowing towards the battery electrode sheet 200 can better remove the dust particles on the edge of the battery electrode sheet 200.

[0053] Please refer to Figures 1 to 6 , in some embodiments, on one side of each dust - removal body 12 away from the groove 121, an adjusting slider 13 is provided. An adjusting hole 131 is provided on the adjusting slider 13, and a mounting hole 111 corresponding to the position of the adjusting hole 131 is provided on the base 11. The battery electrode sheet dust removal device 10 further includes a fixing member 14. The fixing member 14 passes through the adjusting hole 131 and is detachably connected to the mounting hole 111. Along the length direction a of the battery electrode sheet dust removal device 10, the adjusting hole 131 is slidably connected to the fixing member 14. By detachably connecting the fixing member 14 through the adjusting hole 131 of the adjusting slider 13 to the mounting hole 111, the dust - removal body 12 is effectively detachably mounted on the base 11. At the same time, along the length direction a of the battery electrode sheet dust removal device 10, the adjusting hole 131 is slidably connected to the fixing member 14. By sliding the adjusting slider 13 and fixing it at different positions, the distance between the two dust - removal bodies 12 can be flexibly adjusted to adapt to battery electrode sheets 200 of different sizes.

[0054] Please refer to Figures 1 to 6, in some embodiments, the negative pressure channel 122 is connected to a negative pressure pipe 15, and one end of the negative pressure pipe 15 away from the negative pressure channel 122 is connected to a pump body. By the combined use of the negative pressure pipe 15 and the pump body, a strong suction force can be formed in the negative pressure channel 122 by the negative pressure generated by the pump body, and the dust particles at the edge of the battery electrode sheet 200 can be quickly sucked into the channel.

[0055] Further, a part of the negative pressure pipe 15 is located in the negative pressure channel 122. A through hole 16 communicating with the negative pressure channel 122 is provided on the dust removal body 12. A locking member is installed in the through hole 16. The locking member is used to cooperate with the through hole 16 to position the negative pressure pipe 15 and prevent the negative pressure pipe 15 from sliding in the negative pressure channel 122. There are two through holes 16, and along the width direction b of the battery electrode dust removal device 10, the two through holes 16 are oppositely arranged on both sides of the negative pressure channel 122.

[0056] It can be understood that the fixing member and the locking member can be bolts or screws.

[0057] Further, the pressure in the negative pressure channel 122 is -5 kPa to -10 kPa.

[0058] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to embrace all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention.

Claims

1. A dust removal device for battery electrode sheets, characterized in that: It includes a base (11) and two dust removal bodies (12). Along the length direction (a) of the battery electrode sheet dust removal device (10), the two dust removal bodies (12) are arranged on the base (11) so as to be able to approach or move away from each other. Each dust removal body (12) is provided with a groove (121), a negative pressure channel (122) and two air flow channels (123). The openings of the grooves (121) of the two dust removal bodies (12) are arranged opposite to each other. The negative pressure channel (122) and the two air flow channels (123) are both communicated with the groove (121). The negative pressure port (1221) of the negative pressure channel (122) is located on the bottom wall of the groove (121). Along the height direction (c) of the battery electrode sheet dust removal device (10), the two air flow channels (123) are arranged opposite to each other on both sides of the groove (121). The air outlet (1232) of each air flow channel (123) is located on the side wall of the groove (121) and extends along the width direction (b) of the battery electrode sheet dust removal device (10). The air inlet (1231) of each air flow channel (123) is located on at least one side of the dust removal body (12).

2. The dust removal device for battery electrode sheets according to claim 1, wherein: Along the width direction (b) of the battery electrode sheet dust removal device (10), the distance between the end point of the air outlet (1232) and the side surface of the dust removal body (12) is G, and it satisfies the relational expression: 1≤G≤1.5mm.

3. The dust removal device for battery electrode sheets according to claim 1, characterized in that: Each air flow channel (123) includes an air inlet channel (1233) and an air outlet channel (1234) which are sequentially communicated. The air inlet (1231) is arranged on the air inlet channel (1233), the air outlet (1232) is arranged on the air outlet channel (1234), and the air outlet channel (1234) is communicated with the groove (121) through the air outlet (1232).

4. The dust removal device for battery electrode sheets according to claim 3, characterized in that: The air outlet direction (d) of the air outlet channel (1234) inclines towards the direction of the negative pressure channel (122).

5. The dust removal device for battery electrode sheets according to claim 4, wherein: The air outlet directions (d) of the air outlet channels (1234) of the two air flow channels (123) form an intersection point on the center line (e) of the negative pressure channel (122), and the included angle of the air outlet directions (d) of the air outlet channels (1234) of the two air flow channels (123) is α, and it satisfies the relational expression: 115°≤α≤125°.

6. The dust removal device for battery electrode sheets according to claim 3, characterized in that: The size of the cross section of the air inlet channel (1233) in the length direction (a) of the battery electrode sheet dust removal device (10) is D, and the size of the cross section of the air outlet channel (1234) in the length direction (a) of the battery electrode sheet dust removal device (10) is J, and it satisfies the relational expression: J≤D.

7. The dust removal device for battery electrode sheets according to any one of claims 1 to 6, characterized in that: Along the length direction (a) of the battery electrode sheet dust removal device (10), the width of the air outlet (1232) is H, and it satisfies the relational expression: 1≤H≤2mm.

8. The dust removal device for battery electrode sheets according to claim 1, characterized in that: On one side of each dust removal body (12) away from the groove (121), an adjustment slider (13) is provided. An adjustment hole (131) is provided on the adjustment slider (13). An installation hole (111) corresponding to the position of the adjustment hole (131) is provided on the base (11). The battery pole piece dust removal device (10) further includes a fixing member (14). The fixing member (14) passes through the adjustment hole (131) and is detachably connected to the installation hole (111). Along the length direction (a) of the battery pole piece dust removal device (10), the adjustment hole (131) is slidably connected to the fixing member (14).

9. The dust removal device for battery electrode sheets according to claim 1, wherein: The negative pressure channel (122) is connected to a negative pressure pipe (15). One end of the negative pressure pipe (15) away from the negative pressure channel (122) is connected to a pump body.

10. A dust removal system, characterized in that: It includes a transmission mechanism (20) and the battery pole piece dust removal device according to any one of claims 1 to 9. The transmission mechanism (20) is arranged on one side of the battery pole piece dust removal device (10). The transmission mechanism (20) is used to extend the edge of the battery pole piece (200) into the groove (121) and can transmit along the width direction (b) of the battery pole piece dust removal device (10).

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