Guide assembly, negative pressure formation device and charge and discharge test device

Abstract

The utility model discloses a guide assembly, a negative pressure formation device and a charging and discharging test device, and relates to the technical field of battery auxiliary production equipment. The guide assembly comprises a bearing part, a fixing part and at least one guide part, and the bearing part is provided with at least one battery placement area; the fixing piece and the bearing piece are arranged in a spaced mode in the preset direction. The at least one guide part is arranged on the side, close to the bearing part, of the fixing part, one guide part corresponds to one battery placement area, the guide part comprises a guide sleeve, the communication direction of the guide sleeve is parallel to the preset direction, and the guide sleeve is arranged in the guide sleeve. The area of the opening, close to one side of the bearing piece, of the guide sleeve is smaller than that of the opening, away from one side of the bearing piece, of the guide sleeve. According to the guide assembly provided by the invention, the condition that the battery deviates or inclines can be reduced or even prevented, and the concentricity when the liquid injection port of the battery is attached to the negative pressure suction nozzle is improved.

Description

Technical Field

[0001] This application relates to the field of battery auxiliary production equipment technology, and in particular to a positive guide component, a negative pressure formation device, and a charge / discharge testing device. Background Technology

[0002] Battery negative pressure formation is a process used in battery manufacturing to improve battery performance and stability.

[0003] During the negative pressure formation process of lithium-ion cylindrical batteries, if the battery shifts or tilts within the tray fixture, it affects the concentricity of the battery's filling port and the negative pressure nozzle. This concentricity deviation can lead to increased negative pressure leakage or prevent the proper release of internal gas, resulting in battery bulging. Utility Model Content

[0004] In view of this, this application provides a positive guide component, a negative pressure formation device, and a charge-discharge testing device, with the aim of solving one of the technical problems in the prior art.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] In a first aspect, embodiments of this application provide a guiding component, including:

[0007] The carrier has at least one battery placement area;

[0008] The fixing element is spaced apart from the bearing element along a preset direction;

[0009] At least one guide member is disposed on the side of the fixing member close to the carrier member. One guide member is correspondingly disposed with one battery placement area. The guide member includes a guide sleeve. The communication direction of the guide sleeve is parallel to the preset direction. The area of ​​the opening of the guide sleeve on the side close to the carrier member is smaller than the area of ​​the opening of the guide sleeve on the side away from the carrier member.

[0010] In one embodiment of the first aspect, the cross-sectional area of ​​the guide sleeve gradually decreases along the direction from the fixing member to the bearing member.

[0011] In one embodiment of the first aspect, the guide sleeve includes a plurality of sidewalls that surround and form the guide sleeve, with adjacent sidewalls spaced apart.

[0012] In one embodiment of the first aspect, the sidewall is strip-shaped, and the sidewall forms an angle with the preset direction.

[0013] In one embodiment of the first aspect, the carrier has at least one groove formed on the side facing the fixing member, the groove forming the battery placement area, and adjacent battery placement areas are spaced apart.

[0014] In one embodiment of the first aspect, the guiding assembly further includes a guide plate disposed between the guide sleeve and the carrier, the guide plate having at least one through hole, the cross-sectional shape of the through hole being the same as the cross-sectional shape of the groove, and one through hole being disposed opposite to the center of one groove.

[0015] In one embodiment of the first aspect, the guiding component further includes a lifting member, the output end of which is connected to the carrier or the fixing member. The lifting member drives the carrier to move closer to or away from the fixing member, or the lifting member drives the fixing member to move closer to or away from the carrier.

[0016] Secondly, embodiments of this application also provide a negative pressure formation apparatus, comprising:

[0017] The guiding component in any of the above embodiments;

[0018] At least one negative pressure suction nozzle is provided, which is connected to the fixing member, and one negative pressure suction nozzle is correspondingly disposed in one of the guide sleeves.

[0019] In one embodiment of the second aspect, the guide further includes a connecting plate, the connecting plate being annular, and the fixing member further includes at least one temperature probe and at least one formation probe, the temperature probe and the formation probe being respectively disposed within the connecting plate.

[0020] Thirdly, embodiments of this application also provide a charge / discharge testing device, including the guiding component in any of the above embodiments.

[0021] Compared to existing technologies, the beneficial effects of this application are as follows: This application proposes a guiding component, including a carrier, a fixing member, and at least one guiding member. The carrier has at least one battery placement area; the fixing member and the carrier are spaced apart along a preset direction; at least one guiding member is located on the side of the fixing member near the carrier, with one guiding member corresponding to one battery placement area. The guiding member includes a guide sleeve, the communication direction of which is parallel to the preset direction, and the area of ​​the opening on the side of the guide sleeve near the carrier is smaller than the area of ​​the opening on the side of the guide sleeve away from the carrier. As the battery moves towards the negative pressure nozzle along the preset direction, the guide sleeve guides and straightens the cylindrical battery in the battery tray, reducing or even preventing the cylindrical battery from swaying or tilting when the battery tray rises. This ensures that the verticality of the cylindrical battery in the battery tray does not affect the concentricity of the battery filling port and the negative pressure nozzle, reducing the negative pressure leakage rate and minimizing the possibility of battery bulging due to the inability of internal gas to escape properly. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This illustration shows one of the assembly structures of the negative pressure formation device and the battery in some embodiments of this application;

[0024] Figure 2 A schematic diagram of the negative pressure formation apparatus in some embodiments of this application is shown;

[0025] Figure 3 A schematic diagram of the structure of the guide element in some embodiments of this application is shown.

[0026] Key component symbols: 100-Negative pressure formation device; 110-Carrier component; 111-Base plate; 112-Battery carrier; 120-Fixing component; 121-Top plate; 122-Fixing plate; 130-Support column; 140-Guide component; 1121-Battery placement area; 141-Guide sleeve; 1411-Side wall; 142-Connecting plate; 1122-Groove; 150-Guide plate; 151-Through hole; 160-Column; 170-Lifting component; 180-Negative pressure nozzle; D1-Preset direction. Detailed Implementation

[0027] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0028] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0029] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0030] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0031] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0032] like Figure 1As shown, an embodiment of this application provides a guiding component, which is mainly used to guide the battery and reduce the occurrence of tilting or displacement of the battery.

[0033] The alignment assembly includes a carrier 110, a fixing member 120, and at least one alignment member 140.

[0034] like Figure 1 and Figure 2 The carrier 110 includes a battery tray 112 and a base plate 111. The battery tray 112 is used to place batteries, and the base plate 111 is used to place the battery tray 112 and position it.

[0035] The battery tray 112 can be removed from the chassis, and in some embodiments, the base plate 111 is also provided with a detector to detect the presence or absence of the battery tray 112.

[0036] Each battery placement area 1121 is located on the battery tray 112.

[0037] The fastener 120 and the support member 110 are spaced apart along a preset direction D1. The fastener 120 includes a top plate 121 and a fixing plate 122.

[0038] like Figure 2 As shown, the top plate 121 and the bottom plate 111 are arranged parallel to each other along a preset direction D1. Multiple support columns 130 are provided between the top plate 121 and the bottom plate 111. The top plate 121 is positioned above the bottom plate 111 by setting the support columns 130.

[0039] The fixing plate 122 is disposed on the side of the top plate 121 near the bottom plate 111, and at least one guide member 140 is disposed on the side of the fixing member 120 near the bearing member 110. The guide member 140 is connected to the side of the fixing plate 122 near the bottom plate 111.

[0040] The top plate 121 is annular, with the middle part of the top plate 121 empty, leaving space for the conduit of the negative pressure suction nozzle 180 to be connected.

[0041] A guide member 140 is correspondingly provided with a battery placement area 1121. The battery placement area 1121 is used to place a battery.

[0042] The guide member 140 includes a guide sleeve 141, the communication direction of which is parallel to the preset direction D1. The area of ​​the opening on the side of the guide sleeve 141 closer to the support member 110 is smaller than the area of ​​the opening on the side of the guide sleeve 141 farther from the support member 110. In this way, the guide sleeve 141 is first tightened relative to the outside of the battery to straighten the battery, and then loosened to allow the battery to rise continuously without jamming.

[0043] In this way, as the battery moves closer to the negative pressure nozzle 180 along the preset direction D1, the battery is continuously and gradually guided to the correct position. This reduces or even prevents the cylindrical battery from swaying or tilting when the battery carrier 112 rises. It also ensures that the verticality of the cylindrical battery in the battery carrier 112 does not affect the concentricity of the battery inlet and the negative pressure nozzle 180, thereby reducing the negative pressure leakage rate and minimizing the possibility of battery bulging due to the inability of internal gas to be properly discharged.

[0044] It should be noted that the preset method is the height orientation of the battery. When the battery is placed in the battery placement area 1121, the top of the battery faces upwards, exposing the positive electrode, negative electrode, and electrolyte filling port.

[0045] In some embodiments, along the direction from the fixing member 120 to the bearing member 110, the cross-sectional area of ​​the guide sleeve 141 gradually decreases, and the longitudinal section of the guide sleeve 141 is trapezoidal.

[0046] In some embodiments, the cross-sectional area of ​​the guide sleeve 141 decreases segmentally along the direction from the fixing member 120 to the bearing member 110. For example, the longitudinal section of the guide sleeve 141 is inverted "convex".

[0047] In some embodiments, such as Figure 3 The guide sleeve 141 includes multiple sidewalls 1411, which enclose the guide sleeve 141 to form the guide sleeve 141, with adjacent sidewalls 1411 spaced apart.

[0048] It is understandable that a lot of heat will be generated during the negative pressure formation process of the battery or during the charging and discharging process. By setting the two adjacent sidewalls 1411 apart, it is easy to dissipate the heat in a timely and effective manner.

[0049] For example, the sidewall 1411 is strip-shaped, and the sidewall 1411 forms an angle with the preset direction D1. In this way, the guide sleeve 141 can both straighten and guide the battery, and also play a good role in heat dissipation.

[0050] Furthermore, the guide sleeve 141 has a simple structure and is easy to manufacture. For example, Figure 3 As shown, there are four sidewalls 1411, which are distributed circumferentially around the battery. The number of sidewalls 1411 can also be two, three, five, etc., and can be set as needed.

[0051] It should be understood that the shape of the sidewall 1411 can be changed. For example, the sidewall 1411 can be made into a trapezoid, with the upper base of the trapezoid away from the battery carrier 112 and the lower base close to the battery carrier 112. This allows the contact area between the battery and the side of the guide sleeve 141 close to the battery carrier 112 to be larger, while the gap between the side of the guide sleeve 141 away from the battery carrier 112 is larger, which facilitates heat dissipation.

[0052] In some embodiments, the guide sleeve 141 may also be configured as a mesh. For example, a circular mesh is stretched along a predetermined direction D1 to obtain the guide sleeve 141, with the inner ring of the ring close to the battery carrier 112 and the outer ring away from the battery carrier 112. This structure has good overall integrity and high strength, but the manufacturing process is complex.

[0053] In some embodiments, the guide sleeve 141 has good high temperature resistance and corrosion resistance. For example, the guide sleeve 141 is made of stainless steel.

[0054] In some embodiments, the support member 110 has at least one groove 1122 formed on the side facing the fixing member 120, the groove 1122 forming a battery placement area 1121, and adjacent battery placement areas 1121 are spaced apart.

[0055] like Figure 2 As shown, the battery carrier 112 is provided with at least one groove 1122, the groove 1122 forming a battery placement area 1121, and adjacent battery placement areas 1121 are spaced apart.

[0056] In some embodiments, the alignment component further includes a guide plate 150.

[0057] like Figure 2 As shown, the guide plate 150 is flat and is arranged parallel to the base plate 111.

[0058] The guide plate 150 and the battery carrier 112 are connected by a plurality of spaced columns 160.

[0059] In some embodiments, the column 160 and the battery carrier 112 are detachably connected, allowing the column 160 and the guide plate 150 to be removed from the battery carrier 112.

[0060] The guide plate 150 is disposed between the guide sleeve 141 and the carrier 110. The guide plate 150 has at least one through hole 151. The cross-sectional shape of the through hole 151 is the same as the cross-sectional shape of the groove 1122. The center of one through hole 151 and one groove 1122 are arranged opposite each other, which makes the battery loaded on the battery carrier plate more stable and less prone to tilting or displacement. It also improves the concentricity of the battery injection port and the negative pressure suction nozzle 180 when they fit together, reduces the negative pressure leakage rate, and reduces the situation where the internal gas of the battery cannot be discharged normally, which can cause the battery to bulge.

[0061] In some embodiments, the guiding assembly further includes a lifting member 170.

[0062] like Figure 2 As shown, the output end of the lifting member 170 is connected to the carrier member 110 or the fixing member 120. The lifting member 170 drives the carrier member 110 to move closer to or away from the fixing member 120, or the lifting member 170 drives the fixing member 120 to move closer to or away from the carrier member 110.

[0063] The lifting component 170 includes four cylinders or four motors.

[0064] Four cylinders or four motors are fixedly distributed on the top plate 121. The output ends of the cylinders or motors are connected to the bottom plate 111, which drives the bottom plate 111 to move along the preset direction D1.

[0065] The support column 130 is a telescopic structure, or the base plate 111 and the support column 130 are movably connected, so that the base plate 111 can move relative to the support column 130 in a preset direction D1.

[0066] This application also provides a negative pressure formation device 100, including the positive guide component and at least one negative pressure nozzle 180 as described in any of the above embodiments.

[0067] like Figure 1 and Figure 2 As shown, the negative pressure suction nozzle 180 is connected to the fixing plate 122 in the fixing member 120.

[0068] A negative pressure suction nozzle 180 is correspondingly disposed inside a guide sleeve 141, and the negative pressure suction nozzle 180 is aligned with the liquid filling port of the battery.

[0069] In some embodiments, the guide 140 further includes a connecting plate 142, which is annular, and the fixing member 120 further includes at least one temperature probe (not shown) and at least one formation probe (not shown), which are respectively disposed within the connecting plate 142.

[0070] Formation probes are used to make contact with the positive or negative electrode of a battery to form an electrical connection.

[0071] Temperature probes are used to detect the temperature around the battery during the formation process.

[0072] The operating procedure of the negative pressure formation device 100 in this application is as follows:

[0073] The battery is loaded onto the battery carrier 112 and initially positioned by the groove 1122 on the battery carrier 112.

[0074] The battery tray 112 is placed on the base plate 111, the base plate 111 positions the battery tray 112, and detects the presence of a tray clamp.

[0075] The lifting component 170 drives the carrier component 110 and the battery to rise. The upper end of the battery enters the guide sleeve 141. As the carrier component 110 and the battery rise, the outer diameter of the upper end of the battery first contacts the guide sleeve 141, and the battery begins to be straightened and guided until the battery injection port and the negative pressure suction nozzle 180 are completely sealed.

[0076] Once the lifting component 170 has risen to its position and the movement has stopped, the battery filling port and the negative pressure suction nozzle 180 have been pressed together, and the next steps, such as negative pressure leak testing and formation testing, will begin.

[0077] Formation is a process of initially charging the battery with a small current, with the aim of forming an SEI film (Solid Electrolyte Interface) on the surface of the negative electrode. The SEI film can effectively prevent the electrolyte from directly contacting the negative electrode material, reduce the occurrence of side reactions, and improve the cycle life and safety of the battery.

[0078] This application also provides a charge-discharge testing device, which includes the guiding component in any of the above embodiments. Therefore, it has all the beneficial effects of the guiding component in any of the above embodiments, and will not be described in detail here.

[0079] For example, the charge-discharge testing device of this application refers to a charge-discharge testing device for battery capacity assessment and OCV (Open Circuit Voltage).

[0080] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0081] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A guiding component, characterized in that, include: The carrier has at least one battery placement area; The fixing element is spaced apart from the bearing element along a preset direction; At least one guide member is disposed on the side of the fixing member close to the carrier member. One guide member is correspondingly disposed with one battery placement area. The guide member includes a guide sleeve. The communication direction of the guide sleeve is parallel to the preset direction. The area of ​​the opening of the guide sleeve on the side close to the carrier member is smaller than the area of ​​the opening of the guide sleeve on the side away from the carrier member.

2. The guiding component according to claim 1, characterized in that, Along the direction from the fixing member to the bearing member, the cross-sectional area of ​​the guide sleeve gradually decreases.

3. The guiding component according to claim 1, characterized in that, The guide sleeve includes multiple sidewalls, which enclose the guide sleeve to form the guide sleeve, with adjacent sidewalls spaced apart.

4. The guiding component according to claim 3, characterized in that, The sidewall is strip-shaped, and an angle is formed between the sidewall and the preset direction.

5. The guiding component according to claim 1, characterized in that, The support member has at least one groove on the side facing the fixing member, the groove forming the battery placement area, and adjacent battery placement areas are spaced apart.

6. The guiding component according to claim 5, characterized in that, The guiding assembly further includes a guide plate, which is disposed between the guide sleeve and the carrier. The guide plate has at least one through hole, and the cross-sectional shape of the through hole is the same as the cross-sectional shape of the groove. One through hole is arranged opposite to the center of one groove.

7. The guiding component according to any one of claims 1 to 6, characterized in that, The guiding component also includes a lifting member, the output end of which is connected to the carrier or the fixing member. The lifting member drives the carrier to move closer to or further away from the fixing member, or the lifting member drives the fixing member to move closer to or further away from the carrier.

8. A negative pressure formation apparatus, characterized in that, include: The guiding component according to any one of claims 1 to 7; At least one negative pressure suction nozzle is provided, which is connected to the fixing member, and one negative pressure suction nozzle is correspondingly disposed in one of the guide sleeves.

9. The negative pressure formation apparatus according to claim 8, characterized in that, The guide further includes a connecting plate, which is annular, and the fixing component further includes at least one temperature probe and at least one formation probe, which are respectively disposed within the connecting plate.

10. A charge / discharge testing device, characterized in that, The guiding component according to any one of claims 1 to 7.

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