Battery liquid injection device

Abstract

The utility model relates to a battery liquid injection device, and belongs to the technical field of battery manufacturing. The utility model provides a battery liquid injection device which comprises a tray unit used for fixing a battery; the liquid injection unit and the tray unit are stacked, and the liquid injection unit is used for injecting electrolyte into the battery; the tray unit comprises a tray, an isolation assembly and a guide part, the tray comprises a bottom plate and a frame which are connected with each other, the isolation assembly is located between the bottom plate and the liquid injection unit, the isolation assembly comprises a plurality of isolation parts, the isolation parts are arranged in the first direction, and the guide part is located between the bottom plate and the frame. The plurality of isolation pieces are arranged on the guide piece in a sliding fit and sleeving manner; and the locking mechanism is configured to clamp the isolation assembly, so that the battery is clamped between the two adjacent isolation pieces. The battery liquid injection device can improve the reliability and safety of the liquid injection process.

Description

Technical Field

[0001] The present application relates to the technical field of battery manufacturing, and more particularly, to a battery liquid injection device. Background Art

[0002] With the rise of automotive power lithium batteries in recent years, the manufacturing process of power lithium batteries has been continuously innovated. In the liquid injection process of the battery, it is necessary to place the battery in a tray and then inject electrolyte into the battery.

[0003] Currently, most battery liquid injection devices are provided with a liquid injection station. After the battery is loaded onto the liquid injection station, liquid injection is directly carried out. Since the battery is not fully clamped on the tray, it may shake during the liquid injection process, posing a certain safety hazard. Summary of the Utility Model

[0004] For this reason, the present application proposes a battery liquid injection device that can improve the reliability and safety of the liquid injection process.

[0005] The battery liquid injection device according to some embodiments of the present application includes: a tray unit for fixing the battery; a liquid injection unit stacked with the tray unit for injecting electrolyte into the battery; the tray unit includes a tray, an isolation component, and a guide member. The tray includes a bottom plate and a border connected to each other. The isolation component is located between the bottom plate and the liquid injection unit. The isolation component includes a plurality of isolation members. The plurality of isolation members are arranged in a first direction, and the plurality of isolation members are all slidably engaged with the guide member; a locking mechanism configured to clamp the isolation component so that the battery is clamped between two adjacent isolation members.

[0006] Optionally, the locking mechanism includes two locking components located on both sides of the isolation component along the first direction.

[0007] Optionally, the locking component includes: a first threaded member and a screw sleeve threadedly engaged with the first threaded member. The screw sleeve is fixed to the border, and the first threaded member penetrates through the border; the first threaded member has a first end and a second end disposed opposite to each other along its axial direction, and the second end is located inside the tray.

[0008] Optionally, the locking component further includes a thrust bearing. The thrust bearing is located between the second end of the first threaded member and the isolation component, and the thrust bearing connects the second end of the first threaded member and the isolation member closest to the first threaded member in the isolation component.

[0009] Optionally, the separator includes a substrate and a lining member. A plurality of lining members are provided on at least one side of the substrate in a first direction. Each lining member and the substrate are detachably connected. Among them, the plurality of lining members are arranged along the length direction of the substrate, and at least two of the plurality of lining members are spaced apart to form a clamping groove for clamping the battery.

[0010] Optionally, a plurality of first connecting portions are spaced apart on the side surface of the substrate facing the lining member; a second connecting portion is provided on the side surface of the lining member facing the substrate; the substrate and the lining member are connected by a plug-in fit manner of the second connecting portion and the first connecting portion. Among them, in the second connecting portion and the first connecting portion, one is a dovetail groove and the other is a wedge block that is plugged and matched with the dovetail groove.

[0011] Optionally, the lining member has a first side surface and a second side surface that are oppositely arranged along the length direction of the substrate. In the length direction of the substrate, the distance between the second connecting portion and the first side surface is L1, and the distance between the second connecting portion and the second side surface is L2, and L1 > L2.

[0012] Optionally, the liquid injection unit includes a mounting plate and a liquid injection cup. The mounting plate and the frame are detachably connected. The liquid injection cup is arranged on the mounting plate. The liquid injection cup is connected and communicated with one end of a liquid injection pipe, and the other end of the liquid injection pipe passes through the mounting plate.

[0013] Optionally, the battery liquid injection device further includes a connection assembly. The connection assembly includes a first connection member and a second connection member. The first connection member is threadedly connected to the mounting plate. An installation groove is recessed on the end surface of the first connection member facing the tray; the second connection member is fixed to the frame; the second connection member has an insertion portion, and the insertion portion is plugged and matched with the installation groove.

[0014] Optionally, the connection assembly further includes a limiting member. The limiting member is sleeved on the insertion portion. The limiting member is threadedly matched with the insertion portion, and the limiting member abuts against one end of the first connection member facing the tray.

[0015] Compared with the prior art, the present solution has the following beneficial effects:

[0016] The battery liquid injection device of the embodiment of the present application is used for injecting liquid into the battery. After two separators jointly clamp the battery, the locking mechanism clamps the separator assembly to clamp the battery by the two separators. On the one hand, it avoids the displacement of the battery during the liquid injection process, thereby improving the reliability and safety of the liquid injection process. On the other hand, since the distance between the two separators is adjustable, it can adapt to batteries with different thickness dimensions, and the application range is wider.

[0017] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. Description of the Drawings

[0018] To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and thus should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 Structural schematic of the battery liquid injection device provided for the embodiments of the present application Figure 1 ;

[0020] Figure 2 Structural schematic of the tray unit of the battery liquid injection device provided for the embodiments of the present application;

[0021] Figure 3 For Figure 2 Partial enlarged view at A in

[0022] Figure 4 For Figure 2 Partial enlarged view at B in

[0023] Figure 5 For Figure 2 Partial enlarged view at C in

[0024] Figure 6 Structural schematic of the liquid injection unit of the battery liquid injection device provided for the embodiments of the present application;

[0025] Figure 7 For Figure 6 D - D sectional view of

[0026] Figure 8 Structural schematic of the battery liquid injection device provided for the embodiments of the present application Figure 2 ;

[0027] Figure 9 For Figure 8 Partial enlarged view at E in

[0028] Figure 10 Structural schematic related to the elastic adjustment component of the battery liquid injection device provided for the embodiments of the present application.

[0029] Icons: 100 - Battery filling device; 110 - Tray unit; 111 - Tray; 1111 - Bottom plate; 1112 - Frame; 112 - Isolation component; 1121 - Isolator; 1122 - First connection part; 1123 - Thrust bearing; 1124 - Substrate; 1125 - Liner; 1126 - Liner body; 1127 - Second connection part; 1128 - First side; 1129 - Second side; 113 - Locking mechanism; 1131 - First threaded part; 1132 - First end; 1133 - Second end; 1134 - Nut sleeve; 1135 - Locking component; 114 - Guide; 120 - Filling unit; 121 - Mounting plate; 122 - Filling cup; 1221 - Filling pipe; 1222 - Cup body; 123 - Elastic adjustment component; 1231 - Second threaded part; 1232 - Adjusting nut; 1233 - Elastic member; 130 - Connection component; 131 - First connector; 1311 - Mounting groove; 132 - Second connector; 1321 - Insertion part; 133 - Limiting member; 200 - Battery. Detailed implementation manners

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. The components of the embodiments of the present application described and illustrated herein can generally be arranged and designed in a variety of different configurations.

[0031] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but is merely representative of selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0032] As Figure 1 and Figure 2As shown in the figure, the battery liquid injection device 100 of some embodiments of the present application includes a tray unit 110, a liquid injection unit 120, and a locking mechanism 113. The tray unit 110 is used to fix the battery 200, and the liquid injection unit 120 is stacked with the tray unit 110 for injecting electrolyte into the battery 200. The tray unit 110 includes a tray 111, an isolation component 112, and a guide member 114. The tray 111 includes a bottom plate 1111 and a border 1112 that are connected to each other. The isolation component 112 is located between the bottom plate 1111 and the liquid injection unit 120. The isolation component 112 includes a plurality of isolation members 1121. The plurality of isolation members 1121 are arranged along the first direction X, and the plurality of isolation members 1121 are all slidably engaged with the guide member 114. The locking mechanism 113 is configured to clamp the isolation component 112 so that the battery 200 is clamped between two adjacent isolation members 1121.

[0033] The thickness direction of the battery 200 extends along the first direction X. The tray unit 110 and the liquid injection unit 120 are stacked along the third direction Z. The battery 200 is placed on the tray 111, and the liquid injection port of the battery 200 faces the liquid injection unit 120 to facilitate the liquid injection operation.

[0034] The battery liquid injection device 100 of the embodiments of the present application is used to perform liquid injection treatment on the battery 200. After the two isolation members 1121 jointly clamp the battery 200, the locking mechanism 113 clamps the isolation component 112 so that the two isolation members 1121 clamp the battery 200. On the one hand, it avoids the displacement of the battery 200 during the liquid injection process, thereby improving the reliability and safety of the liquid injection process. On the other hand, since the distance between the two isolation members 1121 is adjustable, it can adapt to batteries 200 with different thickness dimensions, and the application range is wider.

[0035] The border 1112 surrounds the bottom plate 1111 and closes to form a frame structure. That is, the border 1112 includes two side walls arranged opposite to each other along the first direction X and two side walls arranged opposite to each other along the second direction Y. Each side wall is connected to the bottom plate 1111, and the two side walls arranged opposite to each other along the first direction X are used to cooperate with the locking mechanism 113. In other embodiments, the border 1112 may also partially surround the bottom plate 1111. For example, it only includes two side walls arranged opposite to each other along the first direction X.

[0036] In some embodiments of the present application, the length direction of the guide member 114 extends along the first direction X. The isolation member 1121 is provided with a through hole, and the guide member 114 penetrates through the through holes of the plurality of isolation members 1121 along the first direction X, so that the plurality of isolation members 1121 are slidably engaged and sleeved on the guide member 114.

[0037] In other embodiments, grooves may also be formed on the edges of the spacer 1121, and the guide member 114 is snapped into the grooves to slidably mount the spacer 1121 on the guide member 114 in the first direction X.

[0038] In some embodiments of the present application, there are two guide members 114, and the two guide members 114 are arranged on both sides of the isolation assembly 112 along the second direction Y. Both sides of each spacer 1121 are slidably engaged with the corresponding guide member 114, and the first direction X and the second direction Y are perpendicularly arranged.

[0039] That is to say, the spacer 1121 is provided with two through holes, the two through holes are arranged at intervals along the second direction Y, and each guide member 114 passes through the through hole on the same side.

[0040] Through this setting form, it is possible to stably and reliably adjust the distance between multiple spacers 1121 in the first direction X to insert the battery 200 and clamp the battery 200.

[0041] In other embodiments, the number of the guide members 114 may also be one, three, four, etc.

[0042] In some embodiments of the present application, the locking mechanism 113 includes two locking components 1135, and the two locking components 1135 are located on both sides of the isolation assembly 112 along the first direction X.

[0043] Through this setting form, both sides of the isolation assembly 112 along the first direction X can be abutted against the isolation assembly 112 to clamp multiple spacers 1121 from both sides.

[0044] In other embodiments, the locking component 1135 may also be provided only on one side of the isolation assembly 112, and the other side of the isolation assembly 112 is fixedly connected to the frame 1112.

[0045] As Figure 3 shown, in some embodiments of the present application, the locking component 1135 includes a first threaded member 1131 and a threaded sleeve 1134 threadedly engaged with the first threaded member 1131. The threaded sleeve 1134 is fixed to the frame 1112, and the first threaded member 1131 passes through the frame 1112. The first threaded member 1131 has a first end 1132 and a second end 1133 oppositely arranged along its axial direction, and the second end 1133 is located in the tray 111.

[0046] The bushing 1134 is centrally disposed in the frame 1112 in the second direction Y. The axis of the first threaded member 1131 extends in the first direction X. The second end 1133 is located between the frame 1112 and the isolation assembly 112, and the second end 1133 is used to abut against the isolator 1121 closest to the first threaded member 1131 in the isolation assembly 112. The first end 1132 is located outside the frame 1112, and a knob is provided at the first end 1132 for facilitating the hand-held screwing of the first threaded member 1131.

[0047] With this setting form, the isolation assembly 112 can be simply and reliably locked.

[0048] In other embodiments, the locking assembly 1135 can also be a linear cylinder or the like.

[0049] Such as Figure 3 As shown, in some embodiments of the present application, the locking assembly 1135 further includes a thrust bearing 1123. The thrust bearing 1123 is located between the second end 1133 of the first threaded member 1131 and the isolation assembly 112, and the thrust bearing 1123 connects the second end 1133 of the first threaded member 1131 and the isolator 1121 closest to the first threaded member 1131 in the isolation assembly 112.

[0050] Specifically, the thrust bearing 1123 includes a first ring and a second ring. The first ring and the second ring are rotationally engaged through a plurality of rollers. The first ring is fixed to the isolator 1121 closest to the first threaded member 1131 in the isolation assembly 112, and the second ring is fixed to the second end 1133 of the first threaded member 1131. During the rotation of the first threaded member 1131, the isolator 1121 is driven to move along the first direction X through the thrust bearing 1123.

[0051] With this setting form, it is possible to allow the first threaded member 1131 to rotate about its own axis and maintain the reliable abutment of the second end 1133 against the isolator 1121.

[0052] In other embodiments, the second end 1133 of the first threaded member 1131 can also directly abut against the isolator 1121.

[0053] Such as Figure 4 and Figure 5 As shown, in some embodiments of the present application, the isolator 1121 includes a substrate 1124 and a lining 1125. A plurality of linings 1125 are provided on at least one side of the substrate 1124 in the first direction X, and each lining 1125 and the substrate 1124 are detachably connected. Among them, the plurality of linings 1125 are arranged along the length direction of the substrate 1124 (i.e., the second direction Y), and at least two of the plurality of linings 1125 are spaced apart to form a clamping groove for clamping the battery 200.

[0054] The substrate 1124 may be provided with the lining member 1125 only on one side in the first direction X, or may be provided with the lining member 1125 on both sides in the first direction X; the lining member 1125 may be snap-fitted or inserted into the substrate 1124, or may be fixed to the substrate 1124 by threaded members.

[0055] Two adjacent lining members 1125 form a partition structure, and the partition structure is used to separate two adjacent batteries 200 along the second direction Y. By changing the number and insertion direction of the lining members 1125 of the partition mechanism, the size of the partition structure in the second direction Y can be adjusted, so as to adjust the size of the clamping groove in the second direction Y to fix the position of the battery 200 along the second direction Y.

[0056] By providing the lining member 1125, a plurality of clamping grooves can be formed along the second direction Y to adapt to batteries 200 of different specifications.

[0057] In other embodiments, it may also be that three adjacent lining members 1125 form a partition structure, etc.

[0058] Such as Figure 4 and Figure 5 As shown, in some embodiments of the present application, a plurality of first connection portions 1122 are provided at intervals on the side of the substrate 1124 facing the lining member 1125; a second connection portion 1127 is provided on the side of the lining member 1125 facing the substrate 1124; the substrate 1124 and the lining member 1125 are connected by the insertion and cooperation of the second connection portion 1127 and the first connection portion 1122. Among them, in the second connection portion 1127 and the first connection portion 1122, one is a dovetail groove and the other is a wedge block inserted and matched with the dovetail groove.

[0059] The lining member 1125 includes a lining member main body 1126 and a second connection portion 1127. The lining member main body 1126 is used to partition the space between two adjacent spacers 1121 along the second direction Y to form a clamping groove, and the second connection portion 1127 is provided on at least one side of the lining member main body 1126 along the first direction X.

[0060] In some embodiments of the present application, the first connection portion 1122 is a dovetail groove extending along the third direction Z, and the second connection portion 1127 is a wedge block extending along the third direction Z. The second connection portion 1127 is inserted into the first connection portion 1122 along the third direction Z to fix the lining member 1125 to the substrate 1124. In other embodiments, it may also be that the first connection portion 1122 is a dovetail groove and the second connection portion 1127 is a wedge block.

[0061] Through this setting form, the lining member 1125 can be detachably connected to the substrate 1124 simply and reliably.

[0062] In some embodiments of the present application, the inner liner 1125 has a first side surface 1128 and a second side surface 1129 that are oppositely arranged along the length direction of the substrate 1124 (i.e., the second direction Y). In the length direction of the substrate 1124, the distance between the second connecting portion 1127 and the first side surface 1128 is L1, and the distance between the second connecting portion 1127 and the second side surface 1129 is L2, where L1 > L2.

[0063] Both the first side surface 1128 and the second side surface 1129 are arranged parallel to the XZ plane. The distance L1 between the second connecting portion 1127 and the first side surface 1128 refers to the shortest distance L1 from the midpoint of the second connecting portion 1127 in the second direction Y to the first side surface 1128; the distance L2 between the second connecting portion 1127 and the second side surface 1129 refers to the shortest distance L2 from the midpoint of the second connecting portion 1127 in the second direction Y to the second side surface 1129.

[0064] That is to say, the second connecting portion 1127 is arranged deviating from the midline of the inner liner 1125 in the second direction Y. By adjusting the insertion direction of the inner liner 1125, the maximum outer dimension of the above-mentioned partition structure in the second direction Y can be adjusted, so as to form clamping grooves of different sizes.

[0065] Through this setting form, the size of the clamping groove in the second direction Y can be simply and reliably adjusted, so as to adapt to batteries 200 of different specifications.

[0066] In other embodiments, L1 = L2, and the second connecting portion 1127 is arranged in the middle in the second direction Y.

[0067] As Figure 6 、 Figure 8 and Figure 9 shown, the liquid injection unit 120 includes a mounting plate 121 and a liquid injection cup 122. The mounting plate 121 and the frame 1112 are detachably connected. The liquid injection cup 122 is arranged on the mounting plate 121. One end of the liquid injection cup 122 is connected and communicated with a liquid injection tube 1221, and the other end of the liquid injection tube 1221 passes through the mounting plate 121.

[0068] The liquid injection cup 122 includes a cup body 1222 and a liquid injection tube 1221. The cup body 1222 is connected to an external liquid supply device. The liquid injection tube 1221 is located on the lower side of the cup body 1222. The liquid injection cups 122 are arranged in one-to-one correspondence with the batteries 200 in the tray 111. Each liquid injection cup 122 injects electrolyte into the corresponding battery 200 through the liquid injection tube 1221.

[0069] Through this setting form, the detachable connection between the liquid injection unit 120 and the tray unit 110 can be realized, and the liquid injection tube 1221 can be reliably inserted into the battery 200 without displacement during the liquid injection process, thereby improving the liquid injection quality.

[0070] As Figure 1 , Figure 6 and Figure 7 shown, in some embodiments of the present application, the battery liquid injection device 100 further includes a connection assembly 130. The connection assembly 130 includes a first connection member 131 and a second connection member 132. The first connection member 131 is threadedly connected to the mounting plate 121. An installation groove 1311 is formed by recessing the end face of the first connection member 131 facing the tray 111. The second connection member 132 is fixed to the frame 1112. The second connection member 132 has an insertion portion 1321, and the insertion portion 1321 is in plug-in fit with the installation groove 1311.

[0071] The frame 1112 has a square structure, and four connection assemblies 130 are provided. The four connection assemblies 130 are respectively located at the four corners of the frame 1112; in other embodiments, the connection assemblies 130 can also be six, eight, etc., and are circumferentially spaced apart on the frame 1112.

[0072] As Figure 7 shown, the mounting plate 121 is provided with threaded holes along the third direction Z. The first connection member 131 is a threaded member. The first connection member 131 passes through the threaded holes to be in threaded fit with the mounting plate 121. By screwing the first connection member 131, the installation groove 1311 is driven to approach or move away from the second connection member 132 along the third direction Z. The upper edge of the frame 1112 is bent inward to form a retaining edge. The second connection member 132 is fixed to the upper side of the retaining edge. The provision of the retaining edge can have a sufficient area to fix the second connection member 132.

[0073] As an example form, the first connection member 131 is a threaded member with an axial hollow, that is, the installation groove 1311 penetrates the first connection member 131 along the third direction Z; the insertion portion 1321 is formed by the nut of a socket head cap screw and can be flexibly inserted into the installation groove 1311. As other example forms, the installation groove 1311 and the insertion portion 1321 can also be a plastic snap component.

[0074] Through the plug-in fit of the insertion portion 1321 and the installation groove 1311, the rapid assembly of the first connection member 131 and the second connection member 132 can be realized, and then the liquid injection unit 120 can be fixed to the tray unit 110; by screwing the first connection member 131, the distance between the mounting plate 121 and the tray unit 110 in the third direction Z can be adjusted to adapt to batteries 200 of different heights, so that the liquid injection pipe 1221 can be appropriately inserted into the battery 200.

[0075] In other embodiments, the distance between the mounting plate 121 and the tray unit 110 can also be adjusted by other means, and the fixed connection between the two can be realized.

[0076] Further, the connecting component 130 further includes a limiting member 133. The limiting member 133 is sleeved on the insertion portion 1321. The limiting member 133 is in threaded fit with the insertion portion 1321, and the limiting member 133 abuts against one end of the first connecting member 131 facing the tray 111.

[0077] One end of the first connecting member 131 facing the tray 111 has a flange structure. The outer diameter of the limiting member 133 is greater than the inner diameter of the mounting groove 1311 and abuts against the flange structure.

[0078] By providing the limiting member 133, the maximum insertion and mating degree between the insertion portion 1321 and the mounting groove 1311 can be limited, thereby limiting the extreme position of the first connecting member 131 and the second connecting member 132 in the third direction Z.

[0079] In other embodiments, the limiting member 133 may also be a raised structure on the surface of the frame 1112.

[0080] Such as Figure 10 shown, in some embodiments of the present application, the liquid injection unit 120 further includes an elastic adjustment assembly 123. The elastic adjustment assembly 123 includes a second threaded member 1231, an adjustment nut 1232, and an elastic member 1233. The end of the second threaded member 1231 is connected to the liquid injection cup 122. The second threaded member 1231 passes through the mounting plate 121. The adjustment nut 1232 is in threaded fit with the second threaded member 1231 from the lower side of the mounting plate 121. The elastic member 1233 abuts between the liquid injection cup 122 and the mounting plate 121.

[0081] By providing the elastic adjustment assembly 123, the distance between the liquid injection cup 122 and the mounting plate 121 can be adjusted, thereby adjusting the length of the liquid injection tube 1221 extending into the battery 200.

[0082] In some embodiments of the present application, the elastic member 1233 is sleeved on the second threaded member 1231, that is, the elastic member 1233 is a straight spring. In other embodiments, the elastic member 1233 is independently arranged relative to the second threaded member 1231, and the elastic member 1233 may be a gas spring or the like.

[0083] In some embodiments of the present application, each liquid injection cup 122 is provided with two elastic adjustment assemblies 123. The two elastic adjustment assemblies 123 are arranged at intervals along the second direction Y.

[0084] The size of the liquid injection cup 122 in the second direction Y is greater than the size in the first direction X. The two elastic adjustment assemblies 123 are arranged on both sides of the liquid injection cup 122 along the second direction Y, and can evenly adjust the height position of the liquid injection cup 122.

[0085] In other embodiments, according to the specific shape of the liquid injection cup 122, the number and position of the elastic adjustment assemblies 123 can be flexibly adjusted.

[0086] The working process of the battery liquid injection device 100 according to some embodiments of the present application is as follows:

[0087] Load the battery 200 into the clamping groove;

[0088] Screw the first threaded members 1131 of the two locking components 1135, so that the second ends 1133 of the two first threaded members 1131 jointly clamp the isolation component 112, so that the battery 200 is clamped between two adjacent isolation members 1121 along the first direction X, thereby fixing the position of the battery 200 along the first direction X;

[0089] Screw the first connecting member 131, adjust the height position of the installation groove 1311 of the first connecting member 131, insert and cooperate the installation groove 1311 of the first connecting member 131 with the insertion portion 1321 of the corresponding second connecting member 132, thereby connecting the mounting plate 121 with the frame 1112, realizing the connection between the liquid injection unit 120 and the tray unit 110, and the liquid injection pipe 1221 of each liquid injection cup 122 extends into the corresponding battery 200, and the battery 200 is fixed in the third direction Z;

[0090] Perform liquid injection treatment on the battery 200;

[0091] After the liquid injection is completed, screw the first threaded member 1131 in the reverse direction to release the battery 200 along the first direction X, so as to facilitate the unloading of the battery 200.

[0092] When a model change is required, reversely insert the lining member 1125, add or remove part of the lining member 1125, and adjust the size of the clamping groove in the second direction Y, so as to adapt to different specifications of the battery 200;

[0093] Screw the adjusting nut 1232 to adjust the height position of the liquid injection cup 122 on the mounting plate 121, and adjust the height position of the liquid injection pipe 1221, so as to adapt to different specifications of the battery 200.

[0094] Using the battery liquid injection device 100 according to the embodiments of the present application to perform liquid injection treatment on the battery 200 can fix the position of the battery 200 in all directions in the first direction X, the second direction Y, and the third direction Z, and can improve the reliability and safety of the liquid injection process.

[0095] It should be noted that, without conflict, the features in the embodiments of the present application can be combined with each other.

[0096] The above are only the preferred embodiments of the present application, and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A battery liquid injection device (100), characterized in that: include: A tray unit (110) for fixing a battery (200); A liquid injection unit (120) stacked with the tray unit (110) and used for injecting electrolyte into the battery (200); The tray unit (110) comprises a tray (111), an isolation assembly (112) and a guide member (114); the tray (111) comprises a bottom plate (1111) and a frame (1112) connected to each other; the isolation assembly (112) is located between the bottom plate (1111) and the injection unit (120); the isolation assembly (112) comprises a plurality of isolation members (1121); the plurality of isolation members (1121) are arranged along a first direction, and the plurality of isolation members (1121) are all slidably matched with the guide member (114); The locking mechanism (113) is configured to clamp the isolation assembly (112) so that the battery (200) is clamped between two adjacent isolation members (1121).

2. The battery liquid filling device (100) according to claim 1, characterized in that: The locking mechanism (113) comprises two locking assemblies (1135), and the two locking assemblies (1135) are located on both sides of the isolation assembly (112) along the first direction.

3. The battery liquid filling device (100) according to claim 2, characterized in that: The locking assembly (1135) comprises: A first threaded member (1131) and a screw sleeve (1134) threadedly matched with the first threaded member (1131), wherein the screw sleeve (1134) is fixed to the frame (1112), and the first threaded member (1131) passes through the frame (1112); the first threaded member (1131) has a first end (1132) and a second end (1133) which are arranged opposite to each other along its axial direction, and the second end (1133) is located in the tray (111).

4. The battery liquid filling device (100) according to claim 3, characterized in that: The locking assembly (1135) also includes a thrust bearing (1123), which is located between the second end (1133) of the first threaded member (1131) and the isolation assembly (112), and the thrust bearing (1123) connects the second end (1133) of the first threaded member (1131) and the isolation member (1121) in the isolation assembly (112) that is closest to the first threaded member (1131).

5. The battery liquid filling device (100) according to claim 1, characterized in that: The isolating member (1121) comprises a substrate (1124) and a lining member (1125), wherein a plurality of lining members (1125) are arranged on at least one side of a first direction of the substrate (1124), and each of the lining members (1125) and the substrate (1124) are detachably connected, wherein the plurality of lining members (1125) are arranged along the length direction of the substrate (1124), and at least two of the plurality of lining members (1125) are arranged at intervals to form a clamping groove for clamping the battery (200).

6. The battery liquid filling device (100) according to claim 5, characterized in that: A plurality of first connection parts (1122) are arranged at intervals on the side of the substrate (1124) facing the lining member (1125); a second connection part (1127) is arranged on the side of the lining member (1125) facing the substrate (1124); the substrate (1124) and the lining member (1125) are connected by plugging and fitting the second connection part (1127) and the first connection part (1122), wherein one of the second connection part (1127) and the first connection part (1122) is a dovetail groove and the other is a wedge block plugged and fitted with the dovetail groove.

7. The battery liquid filling device (100) according to claim 6, characterized in that: The lining member (1125) has a first side surface (1128) and a second side surface (1129) which are arranged opposite to each other along the length direction of the substrate (1124). In the length direction of the substrate (1124), the distance between the second connecting portion (1127) and the first side surface (1128) is L1, and the distance between the second connecting portion (1127) and the second side surface (1129) is L2, and L1>L2.

8. The battery liquid filling device (100) according to claim 1, characterized in that: The liquid injection unit (120) comprises a mounting plate (121) and a liquid injection cup (122); the mounting plate (121) and the frame (1112) are detachably connected; the liquid injection cup (122) is arranged on the mounting plate (121); the liquid injection cup (122) and one end of a liquid injection tube (1221) are connected and communicated; and the other end of the liquid injection tube (1221) passes through the mounting plate (121).

9. The battery liquid filling device (100) according to claim 8, characterized in that: The battery filling device (100) further comprises a connecting assembly (130), wherein the connecting assembly (130) comprises a first connecting member (131) and a second connecting member (132), wherein the first connecting member (131) is threadedly connected to the mounting plate (121), and the end surface of the first connecting member (131) facing the tray (111) is recessed to form a mounting groove (1311); the second connecting member (132) is fixed to the frame (1112); the second connecting member (132) has an insertion portion (1321), and the insertion portion (1321) and the mounting groove (1311) are plug-fitted.

10. The battery liquid filling device (100) according to claim 9, characterized in that: The connection assembly (130) further comprises a limiting member (133), wherein the limiting member (133) is sleeved on the insertion portion (1321), the limiting member (133) and the insertion portion (1321) are threadedly matched, and the limiting member (133) and one end of the first connection member (131) facing the tray (111) abut against each other.

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