Battery liquid injection machine

Abstract

The utility model relates to a battery liquid injection machine, which comprises a battery clamp transfer device, a battery clamp transfer device, a liquid injection device, a liquid injection device and a liquid injection device, the battery clamp transfer device comprises a carrier plate and a carrier plate driving mechanism, the carrier plate is connected with the carrier plate driving mechanism, and the carrier plate driving mechanism is used for driving the carrier plate to move between a feeding and discharging position and a liquid injection jacking position; the electrolyte injection device is positioned above the electrolyte injection jacking position and is used for injecting electrolyte into the battery; the battery clamp jacking device is located at the liquid injection jacking position and installed below the carrier plate and comprises a jacking plate and a jacking plate driving mechanism, the jacking plate driving mechanism is connected with the jacking plate, the carrier plate is provided with a hollowed-out part, and the jacking plate can penetrate through the hollowed-out part to jack the battery clamp; and the residual liquid suction device is arranged on the carrier plate, and when the carrier plate is located at the feeding and discharging position, the residual liquid suction device is opposite to the liquid injection device and used for sucking residual electrolyte after liquid injection. According to the utility model, the problem that the electrolyte generates bubbles to influence the electrolyte injection quality due to the movement of the electrolyte injection cup is solved, and the quality and efficiency of battery electrolyte injection are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery liquid injection, in particular to a battery liquid injection machine. Background Art

[0002] With the progress of the times, smart electronic devices are used more and more in various scenarios. As an important component of electronic devices, the quality of lithium batteries has a great impact on electronic devices. In the production process of lithium batteries, the filling process is one of the important factors affecting the quality of the battery. In the prior art, when the filling machine fills the battery, it usually drives the filling cup to move and connect with the battery to complete the filling. During the movement, bubbles may be generated in the electrolyte in the filling cup. During the filling, the bubbles enter the battery cavity, thereby affecting the quality of the battery filling. At the same time, the residual liquid suction device and the battery clamp transfer device are driven and controlled separately, which affects the filling efficiency of the equipment. Utility Model Content

[0003] In view of the above-mentioned problems, the purpose of the utility model is to provide a battery filling machine to solve the problem that bubbles in the electrolyte caused by the movement of the filling cup affect the filling quality and the residual liquid suction device affects the filling efficiency, thereby improving the quality and efficiency of battery filling.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] A battery filling machine comprises: a battery clamp transfer device, the battery clamp transfer device comprises a carrier plate and a carrier plate driving mechanism, the carrier plate is connected to the carrier plate driving mechanism, the carrier plate driving mechanism is used to drive the carrier plate to move between the upper and lower material positions and the liquid filling top lifting position; a liquid filling device, the liquid filling device is mounted above the liquid filling top lifting position, and is used to inject electrolyte into the battery; a battery clamp lifting device, the battery clamp lifting device is located at the liquid filling top lifting position and is installed below the carrier plate, the battery clamp lifting device comprises a lifting plate and a lifting plate driving mechanism, the lifting plate driving mechanism is connected to the lifting plate, the carrier plate is provided with a hollow, when the carrier plate is located at the liquid filling top lifting position, the lifting plate can pass through the hollow to lift the battery clamp; a residual liquid suction device, the residual liquid suction device is arranged on the carrier plate, when the carrier plate is located at the upper and lower material positions, the residual liquid suction device is opposite to the liquid filling device, and is used to suck the electrolyte remaining after the liquid filling.

[0006] After the battery is loaded into the battery fixture at the upper and lower material positions, the battery fixture is transported to the injection lifting position by the battery fixture transfer device. The lifting plate of the battery fixture lifting device passes through the carrier plate of the battery fixture transfer device, and lifts the battery fixture to the docking position below the injection device, and the injection device injects electrolyte into the battery. After the injection is completed, the battery fixture falls to the carrier plate, and returns to the upper and lower material positions through the battery fixture transfer device, and the battery after injection can be taken out. At this time, the residual liquid suction device located on the carrier plate moves horizontally with the carrier plate and is located below the injection device, which can clean the electrolyte remaining on the injection device after injection. By driving the battery fixture to move instead of the injection device, the battery and the injection device are docked and the injection is completed, which avoids the movement of the injection device causing bubbles in the electrolyte and affecting the injection quality. By arranging the residual liquid suction device on the carrier plate of the battery fixture transfer device, the residual liquid suction device and the battery fixture are synchronously transferred and controlled, thereby improving the injection efficiency of the equipment.

[0007] Furthermore, the liquid injection device includes a liquid injection mechanism, a liquid adding mechanism and a positive and negative pressure generating mechanism, and the liquid adding mechanism and the positive and negative pressure generating mechanism are arranged adjacent to the liquid injection mechanism.

[0008] According to the amount of electrolyte to be injected into the battery, the liquid adding mechanism adds a certain amount of electrolyte into the liquid injection mechanism; the positive and negative pressure generating mechanism can pump negative pressure into the battery, control the generation of negative pressure in the battery, and the liquid injection mechanism completes the negative pressure injection into the battery.

[0009] Furthermore, the injection mechanism includes a plurality of first injection cups and second injection cups, wherein the first injection cups are located above the second injection cups, and the first injection cups are connected to the second injection cups in a one-to-one correspondence.

[0010] The first filling cup acts as an electrolyte buffer. The first filling cup is controlled to be connected with the second filling cup, and a certain amount of electrolyte is injected into the second filling cup at the same time. The injection needle of the second filling cup corresponds to the injection port of the battery one by one, and the electrolyte is injected into the battery. This cache injection method improves the injection efficiency.

[0011] Furthermore, the positive and negative pressure generating mechanism includes a plurality of positive and negative pressure pipelines, and the positive and negative pressure pipelines are connected to the second liquid filling cups in a one-to-one correspondence.

[0012] The positive and negative pressure pipelines are connected to the second injection cup accordingly. The battery is pumped into negative pressure through the injection cup so that the electrolyte can be injected into the battery more quickly. The negative pressure injection has good consistency and effectively ensures the quality of the injection.

[0013] Furthermore, the residual liquid suction device includes a residual liquid suction head, a pressing platform and a pressing platform driving mechanism, the residual liquid suction head is arranged on the pressing platform, the pressing platform driving mechanism is connected to the pressing platform, and the pressing platform driving mechanism is used to drive the pressing platform to rise and fall toward the direction of the liquid injection device.

[0014] When the residual liquid suction device is opposite to the liquid injection device, the pressing platform driving mechanism drives the pressing platform to move toward the liquid injection device, so that the residual liquid suction head contacts the liquid injection needle of the second liquid injection cup to receive and absorb the residual electrolyte.

[0015] Furthermore, the injection device is provided with a plurality of driving clamping locks, and the driving clamping locks are located below the injection mechanism. When the battery clamp is lifted to the docking position of the injection mechanism, the driving clamping locks are locked and connected with the battery clamp.

[0016] When the battery clamp is lifted to the docking position of the injection mechanism, the control drives the clamping lock to lock with the battery clamp to ensure the stability of the injection process.

[0017] Furthermore, it also includes a helium filling and nail sealing device, which is arranged adjacent to the battery clamp transfer device. The helium filling and nail sealing device includes a clamping and positioning mechanism, a nail sealing mechanism and a nail sealing lifting mechanism. The clamping and positioning mechanism is located below the nail sealing mechanism, and the nail sealing mechanism is arranged on the nail sealing lifting mechanism.

[0018] After the battery is filled with liquid, take out the battery and put it into the helium filling and sealing device to complete the clamping and positioning of the battery. Control the sealing mechanism to dock with the battery filling port. After helium filling, seal the filling port with nails to prevent the electrolyte from flowing out.

[0019] Furthermore, the clamping and positioning mechanism includes a first clamping and positioning component and a second clamping and positioning component, the first clamping and positioning component is arranged along a first direction, and the second clamping and positioning component is arranged along a second direction.

[0020] The battery is placed in the helium filling and sealing device, and the first clamping and positioning assembly and the second clamping and positioning assembly are controlled to clamp and position the battery along the first and second directions to avoid sealing deviation and improve sealing quality.

[0021] Furthermore, the sealing mechanism includes a punch needle, a punch needle driving unit and a helium filling head. The punch needle passes through the helium filling head and is opposite to the liquid injection hole of the battery. The punch needle driving unit is connected to the punch needle. The punch needle driving unit is used to drive the punch needle to rise and fall towards the battery.

[0022] After the helium filling head is docked with the battery filling port and helium is injected into the battery, the punch drive unit drives the punch to press the sealing pin into the filling port to seal the battery and prevent the electrolyte from flowing out.

[0023] Compared with the prior art, the beneficial effects of the utility model are:

[0024] After the battery is loaded into the battery fixture at the upper and lower material positions, the battery fixture is transported to the injection lifting position by the battery fixture transfer device. The lifting plate of the battery fixture lifting device passes through the carrier plate of the battery fixture transfer device, and lifts the battery fixture to the docking position below the injection device, and the injection device injects electrolyte into the battery. After the injection is completed, the battery fixture falls to the carrier plate, and returns to the upper and lower material positions through the battery fixture transfer device, and the battery after injection can be taken out. At this time, the residual liquid suction device located on the carrier plate moves horizontally with the carrier plate and is located below the injection device, which can clean the electrolyte remaining on the injection device after injection. By driving the battery fixture to move instead of the injection device, the battery and the injection device are docked and the injection is completed, which avoids the movement of the injection device causing bubbles in the electrolyte and affecting the injection quality. By arranging the residual liquid suction device on the carrier plate of the battery fixture transfer device, the residual liquid suction device and the battery fixture are synchronously transferred and controlled, thereby improving the injection efficiency of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a structural diagram of a battery liquid filling machine according to an embodiment of the utility model.

[0026] Figure 2 This is a structural diagram of the arrangement of a battery clamp transfer device, a battery clamp lifting device and a residual liquid suction device according to an embodiment of the utility model.

[0027] Figure 3 This is a structural diagram of a liquid injection device according to an embodiment of the utility model.

[0028] Figure 4 It is a right side view of a liquid injection device according to one embodiment of the utility model.

[0029] Figure 5 This is a structural diagram of the locking connection between the driving clamping lock and the battery clamp according to an embodiment of the utility model.

[0030] Figure 6 This is a structural diagram of a helium filling and nail sealing device according to an embodiment of the utility model.

[0031] Figure 7 This is a structural diagram of the first clamping and positioning component of an embodiment of the utility model.

[0032] Figure 8 This is a structural diagram of the second clamping and positioning assembly of an embodiment of the utility model.

[0033] Fig. 9 This is a structural diagram of a nail sealing mechanism according to an embodiment of the present utility model.

[0034] Illustrations: 1-battery fixture, 2-battery fixture transfer device, 3-battery fixture lifting device, 4-liquid injection device, 5-residual liquid suction device, 6-helium filling and nail sealing device, 21-carrier plate driving mechanism, 22-carrier plate, 31-lifting plate driving mechanism, 32-lifting plate, 41-driving clamping lock, 42-liquid injection mechanism, 43-liquid adding mechanism, 44-positive and negative pressure generating mechanism, 51-pressing platform driving mechanism, 52-pressing platform, 53-residual liquid suction head, 61-clamping and positioning mechanism, 62-nailing mechanism, 63-nailing lifting mechanism, 421-first liquid injection cup, 422-second liquid injection cup, 441-positive and negative pressure pipelines, 611-first clamping and positioning assembly, 612-second clamping and positioning assembly, 621-punch needle driving unit, 622-helium filling head, 623-punch needle, X-first direction, Y-second direction. DETAILED DESCRIPTION

[0035] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively with reference to the accompanying drawings. The accompanying drawings provide preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein.

[0036] like Figures 1 to 9 As shown, in a preferred embodiment, the utility model provides a battery liquid filling machine, including: a battery clamp transfer device 2, a battery clamp lifting device 3, a liquid filling device 4 and a residual liquid suction device 5. The battery clamp transfer device 2 includes a carrier 22 and a carrier driving mechanism 21, the carrier 22 is connected to the carrier driving mechanism 21, and the carrier driving mechanism 21 is used to drive the carrier 22 to move between the upper and lower material positions and the liquid filling lifting position. In this embodiment, the carrier driving mechanism 21 is composed of a group of slide rails and a cylinder, the carrier 22 is installed on the slide rails through a slider, and the cylinder is fixedly connected to the carrier 22 through a connecting block, and the carrier 22 is controlled by the cylinder to move linearly between the upper and lower material positions and the liquid filling lifting position. In other possible embodiments, the carrier driving mechanism 21 can also be driven by a motor or a screw, and its driving principle and structure are prior art, which will not be repeated here. Liquid filling device 4, the liquid filling device 4 is mounted above the liquid filling lifting position, and is used to inject electrolyte into the battery. The battery clamp lifting device 3 is located at the liquid injection lifting position and is installed below the carrier plate 22. The battery clamp lifting device 3 includes a lifting plate 32 and a lifting plate driving mechanism 31. The lifting plate driving mechanism 31 is connected to the lifting plate 32. The carrier plate 22 is provided with a hollow. When the carrier plate is located at the liquid injection lifting position, the lifting plate 32 can pass through the hollow to lift the battery clamp 1. In this embodiment, the lifting plate driving mechanism 31 adopts a cylinder lifting structure. The residual liquid suction device 5 is arranged on the carrier plate 22. When the carrier plate 22 is located at the upper and lower material positions, the residual liquid suction device 5 is opposite to the liquid injection device 4 and is used to absorb the electrolyte remaining after the liquid injection.

[0037] In the above technical scheme, after the battery is loaded into the fixture at the upper and lower material positions, the fixture is transported to the liquid injection lifting position by the battery fixture transfer device, and the lifting plate of the battery fixture lifting device passes through the carrier plate of the battery fixture transfer device to lift the fixture to the docking position below the liquid injection device, and the liquid injection device injects electrolyte into the battery. After the liquid injection is completed, the fixture falls to the carrier plate, and returns to the upper and lower material positions through the battery fixture transfer device, and the battery after liquid injection can be taken out. At this time, the residual liquid suction device located on the carrier plate moves with the carrier plate and is located below the liquid injection device, which can clean the electrolyte remaining on the liquid injection device after the liquid injection. By driving the battery fixture to move instead of the liquid injection device, the battery and the liquid injection device are docked and the liquid injection is completed, which avoids the movement of the liquid injection device causing bubbles in the electrolyte and affecting the liquid injection quality. By arranging the residual liquid suction device on the carrier plate of the battery fixture transfer device, the synchronous transfer control of the residual liquid suction device and the battery fixture is realized, thereby improving the liquid injection efficiency of the equipment.

[0038] Please refer to Figure 3 and Figure 4 The injection device 4 includes an injection mechanism 42, a liquid adding mechanism 43, and a positive and negative pressure generating mechanism 44. The injection mechanism 42 includes a plurality of first injection cups 421 and second injection cups 422. The first injection cups 421 are located above the second injection cups 422. The first injection cups 421 are connected to the second injection cups 422 in a one-to-one correspondence through pipelines. The first injection cups 421 act as electrolyte buffers, controlling the first injection cups 421 to be connected to the second injection cups 422, and injecting a certain amount of electrolyte into the second injection cups 422 at the same time. The injection needles of the second injection cups 422 correspond to the injection ports of the batteries in a one-to-one correspondence, and the electrolyte is injected into the batteries. This buffer injection method improves the injection efficiency. The liquid adding mechanism 43 is arranged above the first liquid filling cup 421, and its liquid inlet needle can move along the arrangement direction of the first liquid filling cup 421, and is connected with the first liquid filling cup 421. According to the amount of electrolyte to be injected into the battery, a certain amount of electrolyte is added to the first liquid filling cup 421. The positive and negative pressure generating mechanism 44 is arranged adjacent to the liquid filling mechanism 42, and the positive and negative pressure generating mechanism 44 includes a plurality of positive and negative pressure pipelines, which are controlled by solenoid valves to be connected to the second liquid filling cup 422 in a one-to-one correspondence. The positive and negative pressure pipelines pump the battery into negative pressure through the second liquid filling cup 422, so that the electrolyte can be injected into the battery more quickly, and the negative pressure injection has good consistency, which effectively ensures the quality of the injection.

[0039] Please refer to Figure 5 The injection device 4 is provided with a plurality of driving clamping locks 41, and the driving clamping locks 41 are located below the injection mechanism 42. The battery clamp 1 is provided with an L-shaped locking groove. When the battery clamp 1 is lifted to the docking position of the injection mechanism 42, the driving clamping locks 41 are locked and connected with the L-shaped locking groove of the battery clamp 1 to ensure the stability of the injection process.

[0040] Please refer to Figure 2The residual liquid suction device 5 includes a residual liquid suction head 53, a pressing platform 52, and a pressing platform driving mechanism 51. The residual liquid suction head 53 is arranged on the pressing platform 52 and arranged in an array along the direction of the second liquid injection cup 422. The pressing platform driving mechanism 51 is connected to the pressing platform 52. The pressing platform driving mechanism 51 is used to drive the pressing platform 52 to move up and down toward the liquid injection device 4. When the residual liquid suction device 5 is opposite to the liquid injection device 4, the pressing platform driving mechanism 51 drives the pressing platform 52 to move toward the liquid injection device 4, so that the residual liquid suction head 53 is connected to the liquid injection needle of the second liquid injection cup 422, and receives and absorbs the residual electrolyte.

[0041] Please refer to Figures 6 to 8 The liquid filling machine also includes a helium filling and nail sealing device 6, which is arranged adjacent to the battery clamp transfer device 2. The helium filling and nail sealing device 6 includes a clamping and positioning mechanism 61, a nail sealing mechanism 62, and a nail sealing lifting mechanism 63. The clamping and positioning mechanism 61 is located below the nail sealing mechanism 62, and the nail sealing mechanism 62 is installed and fixed on the nail sealing lifting mechanism 63. The clamping and positioning mechanism 61 includes a first clamping and positioning component 611 and a second clamping and positioning component 612. The first clamping and positioning component 611 is arranged along the first direction X, and the second clamping and positioning component 612 is arranged along the second direction Y. The first direction X and the second direction Y are perpendicular. The first clamping and positioning component 611 includes a clamping drive mechanism, a transmission mechanism, a translation slide rail, a first clamping and positioning block, and a second clamping and positioning block. The clamping drive mechanism is connected to the transmission mechanism in a driving manner. The first clamping and positioning block and the second clamping and positioning block are installed on the translation slide rail and connected to the transmission mechanism. Under the action of the clamping drive mechanism, the transmission mechanism can drive the first clamping and positioning block and the second clamping and positioning block to move relative to each other along the first direction X to clamp the battery. In this embodiment, the clamping drive mechanism is driven by a cylinder, and the transmission mechanism is composed of a rack, a gear and a screw. The second clamping and positioning assembly 612 includes a base plate and an ejection positioning mechanism, which is fixed to the base plate. The ejection positioning mechanism can position the battery along the second direction Y and can eject and push the battery. In this embodiment, the ejection positioning mechanism is driven by a cylinder. During operation, the battery is placed in the helium filling and nail sealing device 6, and the first clamping and positioning assembly 611 and the second clamping and positioning assembly 612 are controlled to clamp and position the battery along the first direction X and the second direction Y to avoid nail sealing deviation and improve the nail sealing quality.

[0042] Please refer to Figure 6 and Fig. 9The sealing nail mechanism 62 includes a punching needle 623, a punching needle driving unit 621 and a helium filling head 622. The punching needle 623 passes through the helium filling head 622 and is opposite to the liquid injection hole of the battery. The punching needle driving unit 621 is connected to the punching needle 623. The sealing nail lifting mechanism 63 drives the sealing nail mechanism 62 to move toward the battery, so that the helium filling head 622 is connected to the battery injection hole and helium is injected. The punching needle driving unit 621 drives the punching needle 623 to move downward, presses the sealing nail into the injection port, seals the battery, and prevents the electrolyte from flowing out. In this embodiment, the punching needle driving unit 621 is driven by a cylinder.

[0043] In the description of the present invention, it should be understood that terms such as "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0044] In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the definition of "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0045] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A battery filling machine, characterized in that: include: A battery clamp transfer device, the battery clamp transfer device comprising a carrier plate and a carrier plate driving mechanism, the carrier plate is connected to the carrier plate driving mechanism, and the carrier plate driving mechanism is used to drive the carrier plate to move between the upper and lower material positions and the liquid injection top lifting position; A liquid injection device, which is mounted above the liquid injection top lifting position and is used to inject electrolyte into the battery; A battery clamp lifting device, the battery clamp lifting device is located at the liquid injection lifting position and is installed below the carrier plate. The battery clamp lifting device includes a lifting plate and a lifting plate driving mechanism. The lifting plate driving mechanism is connected to the lifting plate. The carrier plate is provided with a hollow. When the carrier plate is located at the liquid injection lifting position, the lifting plate can pass through the hollow to lift the battery clamp. The residual liquid suction device is arranged on the carrier plate. When the carrier plate is located at the upper and lower material positions, the residual liquid suction device is opposite to the injection device and is used to absorb the residual electrolyte after injection.

2. The battery filling machine according to claim 1, characterized in that: The liquid injection device comprises a liquid injection mechanism, a liquid adding mechanism and a positive and negative pressure generating mechanism, and the liquid adding mechanism and the positive and negative pressure generating mechanism are arranged adjacent to the liquid injection mechanism.

3. The battery filling machine according to claim 2, characterized in that: The injection mechanism includes a plurality of first injection cups and second injection cups, wherein the first injection cups are located above the second injection cups, and the first injection cups are connected to the second injection cups in a one-to-one correspondence.

4. The battery liquid filling machine according to claim 3, characterized in that: The positive and negative pressure generating mechanism includes a plurality of positive and negative pressure pipelines, and the positive and negative pressure pipelines are connected to the second liquid injection cups in a one-to-one correspondence.

5. The battery liquid filling machine according to claim 1, characterized in that: The residual liquid suction device includes a residual liquid suction head, a pressing platform and a pressing platform driving mechanism. The residual liquid suction head is arranged on the pressing platform. The pressing platform driving mechanism is connected to the pressing platform. The pressing platform driving mechanism is used to drive the pressing platform to rise and fall toward the liquid injection device.

6. The battery liquid filling machine according to claim 2, characterized in that: The injection device is provided with a plurality of driving clamping locks, and the driving clamping locks are located below the injection mechanism. When the battery clamp is lifted to the docking position of the injection mechanism, the driving clamping locks are locked and connected with the battery clamp.

7. The battery liquid filling machine according to claim 1, characterized in that: It also includes a helium filling and nail sealing device, which is arranged adjacent to the battery clamp transfer device. The helium filling and nail sealing device includes a clamping and positioning mechanism, a nail sealing mechanism and a nail sealing lifting mechanism. The clamping and positioning mechanism is located below the nail sealing mechanism, and the nail sealing mechanism is arranged on the nail sealing lifting mechanism.

8. The battery liquid filling machine according to claim 7, characterized in that: The clamping and positioning mechanism comprises a first clamping and positioning component and a second clamping and positioning component, wherein the first clamping and positioning component is arranged along a first direction, and the second clamping and positioning component is arranged along a second direction.

9. The battery liquid filling machine according to claim 7, characterized in that: The nail sealing mechanism includes a punch needle, a punch needle driving unit and a helium filling head. The punch needle passes through the helium filling head and is opposite to the battery filling hole. The punch needle driving unit is connected to the punch needle. The punch needle driving unit is used to drive the punch needle to rise and fall towards the battery.

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