A liquid injection device

Abstract

The present invention discloses a liquid injection device, which includes a bracket, a liquid injection mechanism, a liquid receiving mechanism, and a driving mechanism. The liquid injection mechanism is slidably connected to the bracket; the liquid receiving mechanism is fixedly arranged on the bracket; the driving mechanism is arranged on the bracket and is used to drive the liquid injection mechanism to reciprocate between a liquid injection station and a liquid receiving station. By arranging a liquid injection mechanism to inject liquid into the battery cell, arranging a liquid receiving mechanism to receive the residual liquid of the liquid injection mechanism, and arranging a driving mechanism to drive the liquid injection mechanism to reciprocate between the liquid injection station and the liquid receiving station, the structure and control of the liquid injection device can be simplified, the space occupied by the liquid injection device can be saved, and the cost of the driving mechanism can be reduced.

Description

Technical Field

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

[0002] As a way to provide electrical energy, batteries have been widely used in various electronic products. Therefore, the quality of the battery directly affects the quality of the electronic product. During the battery preparation process, it is necessary to inject electrolyte into the battery cell, and replacing manual injection with automatic injection can greatly improve the efficiency of battery preparation.

[0003] The inventors of the present application found in long-term research and development that currently, at least two driving mechanisms are provided in the injection device. One driving mechanism is used to drive the liquid injection needle to move between the liquid injection station and the liquid receiving station, and the other driving mechanism is used to drive the liquid receiving mechanism to extend when the liquid injection needle reaches the liquid receiving station to catch the residual electrolyte in the liquid injection needle and prevent the residual electrolyte from dripping onto the liquid injection device. However, the control of multiple driving mechanisms is complex, occupies a large space, and the cost of the driving mechanism is relatively high. Summary of the Invention

[0004] The present invention provides a liquid injection device to solve the technical problems in the prior art that the liquid injection device with multiple driving mechanisms causes complex control, large space occupation and high cost.

[0005] To solve the above technical problems, a technical solution adopted by the present invention is to provide a liquid injection device, including:

[0006] A bracket;

[0007] A liquid injection mechanism, slidably connected to the bracket;

[0008] A liquid receiving mechanism, fixedly arranged on the bracket;

[0009] A driving mechanism, arranged on the bracket, for driving the liquid injection mechanism to reciprocate between the liquid injection station and the liquid receiving station.

[0010] In a specific embodiment, the liquid injection device further includes a push block mechanism. The push block mechanism is slidably arranged on the bracket. The liquid injection mechanism is slidably connected to the push block mechanism. The push block mechanism is used to abut against the cap of the battery cell when in the liquid injection station to avoid the liquid injection mechanism.

[0011] In a specific embodiment, the push block mechanism includes:

[0012] A slide rail, arranged on the bracket;

[0013] A slider, slidably arranged on the slide rail. The slider is connected to the driving mechanism;

[0014] The pushing block is connected to the sliding block and is used to move along the first direction under the drive of the driving mechanism, so as to reciprocate between the liquid injection station and the liquid receiving station.

[0015] In a specific embodiment, the liquid injection mechanism includes:

[0016] The connecting plate, which includes a main body portion, a first connecting portion extending along one side of the main body portion, and a second connecting portion extending along the other side of the main body portion, such that the connecting plate is arranged in a V shape. The main body portion is connected to the driving mechanism, and the second connecting portion is slidably connected to the sliding block;

[0017] The liquid injection needle is fixedly connected to the first connecting portion and is used to move along a second direction inclined to the first direction under the drive of the driving mechanism, so as to inject liquid into the battery cell when at the liquid injection station and discharge the remaining liquid to the liquid receiving mechanism when at the liquid receiving station.

[0018] In a specific embodiment, the liquid injection device further includes two sets of driven rollers, which are spaced apart on the pushing block, and the second connecting portion is arranged between the two sets of driven rollers, and can limit the connecting plate from moving relative to the sliding block along a third direction perpendicular to the first direction when the driving mechanism drives the connecting plate to move.

[0019] In a specific embodiment, the liquid injection mechanism further includes:

[0020] The liquid injection container, and the liquid injection needle is communicated with the liquid injection container through a liquid injection pipe;

[0021] The anti-drip valve is connected between the liquid injection needle and the liquid injection pipe;

[0022] The spacer sleeve is sleeved outside the anti-drip valve, and the spacer sleeve is fixedly connected to the first connecting portion.

[0023] In a specific embodiment, the side of the pushing block facing the cap is an inclined surface inclined towards the cap, and the part of the bottom of the pushing block connected to the inclined surface is chamfered.

[0024] In a specific embodiment, the liquid receiving mechanism includes a liquid receiving box, and the side surface of the pushing block facing the liquid receiving box is matched with the shape of the liquid receiving box, so that the liquid injection needle of the liquid injection mechanism is located above the liquid receiving box when the liquid injection mechanism is at the liquid receiving station.

[0025] In a specific embodiment, the liquid receiving box includes a material box body and a liquid receiving platform connected to the material box body, and the push block is provided with a clearance groove corresponding to the liquid receiving platform, so that when the push block mechanism is in the liquid receiving station, at least a portion of the liquid receiving platform is accommodated in the clearance groove.

[0026] In a specific embodiment, the bottom surface of the liquid receiving platform is tilted downward toward the direction of the material box body.

[0027] The present invention provides a liquid injection mechanism to inject liquid into the battery cell, provides a liquid receiving mechanism to receive the residual liquid of the liquid injection mechanism, and provides a driving mechanism to drive the liquid injection mechanism to reciprocate between the liquid injection station and the liquid receiving station. This can simplify the structure and control of the liquid injection device, save the space occupied by the liquid injection device, and reduce the cost of the driving mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0029] Figure 1 It is a side structural schematic diagram of a liquid injection mechanism in an embodiment of a liquid injection device of the present invention at a liquid injection station;

[0030] Figure 2 It is a side structural schematic diagram of a liquid injection mechanism in an embodiment of a liquid injection device of the present invention at a liquid receiving position;

[0031] Figure 3 It is a side structural schematic diagram of a liquid injection mechanism in one embodiment of a liquid injection device of the present invention;

[0032] Figure 4 It is a schematic diagram of the three-dimensional structure of the liquid receiving box in one embodiment of the liquid injection device of the present invention;

[0033] Figure 5 It is a schematic diagram of the three-dimensional structure of a push block in one embodiment of the liquid injection device of the present invention;

[0034] Figure 6 It is a three-dimensional structural schematic diagram of a liquid receiving box and a push block in another embodiment of the liquid injection device of the present invention. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] The terms "first", "second" in this application are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. In the description of this application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices. The term "and / or" is merely an association relationship that describes associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the objects associated with each other are in an "or" relationship.

[0037] See also Figure 1 The embodiment of the liquid injection device 10 of the present invention includes a bracket 100, a liquid injection mechanism 200, a liquid receiving mechanism 300 and a driving mechanism 400. The liquid injection mechanism 200 is slidably connected to the bracket 100; the liquid receiving mechanism 300 is fixedly arranged on the bracket 100; the driving mechanism 400 is arranged on the bracket 100, and is used to drive the liquid injection mechanism 200 to reciprocate between the liquid injection station and the liquid receiving station.

[0038] In the embodiment of the present invention, a liquid injection mechanism 200 is provided to inject liquid into the battery cell 20, a liquid receiving mechanism 300 is provided to receive the residual liquid in the liquid injection mechanism 200, and a driving mechanism 400 is provided to drive the liquid injection mechanism 200 to reciprocate between the liquid injection station and the liquid receiving station. This can simplify the structure and control of the liquid injection device 10, save the space occupied by the liquid injection device 10, and reduce the cost of the driving mechanism 400.

[0039] In this embodiment, the liquid injection device 10 may further include a push block mechanism 500. The push block mechanism 500 is slidably disposed on the bracket 100. The liquid injection mechanism 200 is slidably connected to the push block mechanism 500. The push block mechanism 500 is used to abut against the cap 201 of the battery cell 20 when in the liquid injection station to avoid the liquid injection mechanism 200. By providing the push block mechanism 500, it can be avoided that when the liquid injection mechanism 200 injects liquid into the battery cell 20, the cap 201 tilts and interferes with the liquid injection mechanism 200, causing damage to the liquid injection mechanism 200 and the battery cell 20 due to the liquid injection mechanism 200 pressing against the cap 201. And in this embodiment, by means of a single driving mechanism 400, the driving of the liquid injection mechanism 200 and the push block mechanism 500 can be realized, so that while the push block mechanism 500 pushes away the cap 201, the liquid injection mechanism 200 can inject liquid into the battery cell 20, and after the liquid injection is completed, the liquid injection mechanism 200 is sent to the liquid receiving station. The structure is simple and compact, easy to manufacture, and the control is convenient.

[0040] See also Figure 2 , in this embodiment, the push block mechanism 500 includes a slide rail 510, a slider 520 and a push block 530. The slide rail 510 is disposed on the bracket 100; the slider 520 is slidably disposed on the slide rail 510, and the slider 520 is connected to the driving mechanism 400; the push block 530 is connected to the slider 520 through a mounting block 540 and is used to move along the first direction under the drive of the driving mechanism 400 so as to reciprocate between the liquid injection station and the liquid receiving station.

[0041] In this embodiment, the first direction is defined as Figure 1 the left - right direction in []. When the push block 530 is in the liquid injection station, it abuts against the cap 201. When the push block 530 is in the liquid receiving station, it is close to the liquid receiving mechanism 300. By providing the slide rail 510 and the slider 520 to guide the push block 530, it can be ensured that the push block 530 moves more stably during the movement along the first direction.

[0042] See also Figure 3 , in this embodiment, the liquid injection mechanism 200 includes a connecting plate 210 and a liquid injection needle 220. The connecting plate 210 includes a main body portion 211, a first connecting portion 212 extending along one side of the main body portion 211, and a second connecting portion 213 extending along the other side of the main body portion 211, so that the connecting plate 210 is arranged in a V - shape. The main body portion 211 is connected to the driving mechanism 400, and the second connecting portion 213 is slidably connected to the slider 520; the liquid injection needle 220 is fixedly connected to the first connecting portion 212 and is used to move along a second direction inclined to the first direction under the drive of the driving mechanism 400, so as to inject liquid into the battery cell 20 when in the liquid injection station and discharge the remaining liquid to the liquid receiving mechanism 300 when in the liquid receiving station.

[0043] In this embodiment, the second direction is defined as Figure 1The combined direction of horizontal left and vertical up, that is, the movement of the liquid injection mechanism 200 from the liquid injection station to the liquid receiving station is a movement of both left and up, so that when the liquid injection mechanism 200 is at the liquid receiving station, it is at a high position relative to the liquid receiving mechanism 300, thereby enabling the remaining liquid in the liquid injection mechanism 200 to drip into the liquid receiving mechanism 300.

[0044] In this embodiment, the liquid injection device 10 further includes two groups of driven rollers 600. The two groups of driven rollers 600 are arranged at intervals on the push block 530, and the second connecting portion 213 is arranged between the two groups of driven rollers 600, and can limit the movement of the connecting plate 210 relative to the slider 520 in a third direction perpendicular to the first direction when the driving mechanism 400 drives the connecting plate 210 to move.

[0045] In this embodiment, the third direction is defined as Figure 1 the up and down direction in. By arranging two groups of driven rollers 600 to guide the liquid injection mechanism 200, the liquid injection mechanism 200 can be made more stable during the movement.

[0046] In other embodiments, slide rails and sliders can also be provided to guide the liquid injection mechanism 200, which is not limited herein.

[0047] In this embodiment, the liquid injection mechanism 200 can further include a liquid injection container (not shown in the figure), an anti-drip valve 240, and a spacer 250. The liquid injection needle 220 is communicated with the liquid injection container through a liquid injection tube 230; the anti-drip valve 240 is connected between the liquid injection needle 220 and the liquid injection tube 230; the spacer 250 is sleeved outside the anti-drip valve 240, and the spacer 250 is fixedly connected to the first connecting portion 212 through a mounting plate 260.

[0048] See also Figure 4 and Figure 5 , in this embodiment, the side of the push block 530 facing the cap 201 is an inclined surface 531 inclined in the direction of the cap 201, and the part of the bottom of the push block connected to the inclined surface 531 is chamfered, which can avoid damaging the cap 201 and ensure the battery quality.

[0049] In this embodiment, the liquid receiving mechanism 300 includes a liquid receiving box 310. The liquid receiving box 310 can be connected to the bracket 100 through a truss 320. The side surface of the push block 530 facing the liquid receiving box 310 is matched with the shape of the liquid receiving box 310, so that when the liquid injection mechanism 200 is at the liquid receiving station, the liquid injection needle 220 is located above the liquid receiving box 310.

[0050] In this embodiment, the liquid receiving box 310 includes a material box body 311 and a liquid receiving platform 312 connected to the material box body 311, and the push block 530 is provided with a clearance groove 532 corresponding to the liquid receiving platform 312, so that when the push block mechanism 500 is in the liquid receiving station, at least a portion of the liquid receiving platform 312 is accommodated in the clearance groove 532.

[0051] In this embodiment, the bottom surface of the liquid receiving platform 312 is tilted downward toward the material box body 311 , so that the liquid on the liquid receiving platform 312 can flow into the material box body 311 .

[0052] See also Figure 6 In another specific embodiment, the liquid receiving box 330 may also be arranged in a regular rectangular shape, and the side of the push block 550 close to the liquid receiving box 330 is arranged in a plane to match the shape of the liquid receiving box 330 .

[0053] The above description is only an implementation mode of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A liquid injection device, characterized in that, Comprising: Bracket; Liquid injection mechanism, slidably connected to the bracket, the liquid injection mechanism includes a liquid injection needle; Liquid receiving mechanism, fixedly arranged on the bracket, the liquid receiving mechanism includes a liquid receiving box; Driving mechanism, arranged on the bracket, for driving the liquid injection mechanism to reciprocate between a liquid injection station and a liquid receiving station; Wherein, along a first direction, the liquid receiving station is spaced from the liquid injection station, along a third direction perpendicular to the first direction, the liquid injection station is lower than the liquid receiving station, the liquid receiving mechanism is located below the liquid receiving station, and at the liquid receiving station, the projection of the liquid injection port of the liquid injection needle along the third direction is located within the liquid receiving mechanism; The driving mechanism drives the liquid injection needle to move along a second direction inclined to the first direction, so that the liquid injection needle is located at the liquid receiving station or the liquid injection station.

2. The liquid injection device according to claim 1, characterized in that, The liquid injection device further includes a push block mechanism, the push block mechanism is slidably arranged on the bracket, the liquid injection mechanism is slidably connected to the push block mechanism, and the push block mechanism is used to abut against the cap of the battery cell when at the liquid injection station to avoid the liquid injection mechanism.

3. The liquid injection device according to claim 2, wherein, The push block mechanism includes: Slide rail, arranged on the bracket; Slider, slidably arranged on the slide rail, the slider is connected to the driving mechanism; Push block, connected to the slider, for moving along the first direction under the drive of the driving mechanism to reciprocate between the liquid injection station and the liquid receiving station.

4. The liquid injection device according to claim 3, characterized in that, The liquid injection mechanism includes: Connecting plate, the connecting plate includes a main body portion, a first connecting portion extending along one side of the main body portion, and a second connecting portion extending along the other side of the main body portion, so that the connecting plate is arranged in a V shape, the main body portion is connected to the driving mechanism, and the second connecting portion is slidably connected to the slider; The liquid injection needle is fixedly connected to the first connecting portion, and is used to move along the second direction inclined to the first direction under the drive of the driving mechanism, so as to inject liquid into the battery cell when at the liquid injection station and discharge the remaining liquid to the liquid receiving mechanism when at the liquid receiving station.

5. The liquid injection device according to claim 4, characterized in that, The liquid injection device further includes two groups of driven rollers, the two groups of driven rollers are arranged on the push block at intervals, and the second connecting portion is arranged between the two groups of driven rollers, and can limit the relative movement of the connecting plate relative to the slider along the third direction perpendicular to the first direction when the driving mechanism drives the connecting plate to move.

6. The liquid injection device according to claim 4, characterized in that, The liquid injection mechanism further includes: Liquid injection container, the liquid injection needle is communicated with the liquid injection container through a liquid injection pipe; Anti-drip valve, connected between the liquid injection needle and the liquid injection pipe; Spacer sleeve, sleeved outside the anti-drip valve, the spacer sleeve is fixedly connected to the first connecting portion.

7. The liquid injection device according to claim 3, characterized in that, The side of the push block facing the cap is an inclined surface inclined towards the cap, and the part of the bottom of the push block connected to the inclined surface is chamfered.

8. The liquid injection device according to claim 3, wherein, The side surface of the push block facing the liquid receiving box is matched with the shape of the liquid receiving box, so that when the liquid injection mechanism is at the liquid receiving station, the liquid injection needle of the liquid injection mechanism is located above the liquid receiving box.

9. The liquid injection device according to claim 8, characterized in that, The liquid receiving box comprises a material box body and a liquid receiving platform connected to the material box body, and the push block is provided with a clearance groove corresponding to the liquid receiving platform, so that when the push block mechanism is in the liquid receiving position, at least part of the liquid receiving platform is accommodated in the clearance groove.

10. The liquid injection device according to claim 9, characterized in that, The bottom surface of the liquid receiving platform is tilted downward toward the direction of the material box body.

Images