CN216648414U

CN216648414U - Formation equipment capable of injecting electrolyte

Info

Publication number: CN216648414U
Application number: CN202122656224.6U
Authority: CN
Inventors: 郎帅; 马朝阳; 彭先政; 熊亮
Original assignee: Shanghai Lanjun New Energy Technology Co Ltd
Current assignee: Shanghai Lanjun New Energy Technology Co Ltd
Priority date: 2021-11-02
Filing date: 2021-11-02
Publication date: 2022-05-31
Anticipated expiration: 2031-11-02

Abstract

The utility model provides formation equipment capable of being injected with electrolyte, and relates to the technical field of battery cells. The formation equipment capable of injecting the electrolyte comprises a formation cabinet, a liquid injector, a liquid injection pump and a liquid storage tank. The formation cabinet is provided with a probe, and the probe is used for forming the battery cell. The liquid injector and the liquid injection pump are both arranged in the formation cabinet, one end of the liquid injection pump is connected with the liquid storage tank, the other end of the liquid injection pump is connected with the liquid injector, and the liquid storage tank is used for storing electrolyte. The liquid injector is used for being connected with the battery core and injecting electrolyte into the battery core in the formation process. Therefore, the battery cell is formed by the probe arranged on the formation cabinet, and meanwhile, the battery cell can be injected by the liquid injector in the formation process, so that the processes of formation and liquid injection are simultaneously performed, the efficiency of the formation and liquid injection processes is effectively improved, and the time cost, the equipment cost and the site cost are reduced.

Description

Formation equipment capable of injecting electrolyte

Technical Field

The utility model relates to the technical field of battery cells, in particular to formation equipment capable of being injected with electrolyte.

Background

In the manufacturing process of the lithium battery, the liquid injection and formation of the battery core are two important procedures, the current process comprises the steps of injecting liquid once and forming, and partial electrolyte is consumed in the formation process, so that liquid supplement is needed after the formation. The conventional equipment does not have the function of simultaneously realizing formation and liquid injection, so that the formation and liquid injection efficiency is low, the production beat is influenced, and equipment and a field are wasted.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a chemical conversion device capable of injecting electrolyte, which can perform chemical conversion and injection simultaneously.

The embodiment of the utility model is realized by the following steps:

in a first aspect, the utility model provides a formation device capable of injecting electrolyte, which comprises a formation cabinet, an injector, an injection pump and a liquid storage tank;

the formation cabinet is provided with a probe, and the probe is used for forming the battery cell;

the liquid injector and the liquid injection pump are both arranged in the chemical conversion cabinet, one end of the liquid injection pump is connected with the liquid storage tank, the other end of the liquid injection pump is connected with the liquid injector, and the liquid storage tank is used for storing electrolyte;

the liquid injector is used for being connected with the battery core and injecting electrolyte into the battery core in the formation process.

In an optional embodiment, the liquid injector includes a liquid injection cup and a liquid injection nozzle, one end of the liquid injection cup is connected to the liquid injection pump, and the other end of the liquid injection cup is connected to the liquid injection nozzle, and the liquid injection nozzle is configured to inject the electrolyte into the battery cell when the liquid injection pump is started.

In an alternative embodiment, the infusion pump is a variable displacement pump or a constant flow pump.

In an optional embodiment, the electrolyte-injectable chemical formation device includes a positive-negative pressure generator, the positive-negative pressure generator includes a negative pressure source and an electrolyte filter, the negative pressure source is connected to the electrolyte injection cup through the electrolyte filter, and the electrolyte injection suction nozzle is configured to evacuate the interior of the electrical core when the negative pressure source is started.

In an alternative embodiment, the positive and negative pressure generator further comprises a positive pressure source connected to the priming cup, the positive pressure source being configured to provide positive pressure to the priming reservoir.

In an optional embodiment, the electrolyte injection formation equipment further comprises a tray and a driving piece, the driving piece is arranged in the formation cabinet, the tray is connected with the driving piece, and the driving piece is used for driving the tray to be placed on the tray, so that the plurality of battery cells reach a preset position to be formed and injected with electrolyte.

In an alternative embodiment, the drive member is a cylinder.

In an optional embodiment, the formation equipment capable of injecting the electrolyte further includes a limiting member, the limiting member is disposed in the formation cabinet, and the limiting member is configured to abut against the battery cell when the battery cell moves to the preset position.

In an optional embodiment, the limiting member is provided with a through groove, and the through groove is used for being slidably matched with the battery cell and guiding the battery cell to move to the preset position.

In an optional embodiment, the number of the liquid injectors includes a plurality of liquid injectors, the plurality of liquid injectors correspond to the plurality of battery cells one to one, and the liquid injection pump is connected with the plurality of liquid injectors.

The formation equipment capable of injecting the electrolyte provided by the embodiment of the utility model has the beneficial effects that: through setting up in the probe that becomes cashier's office in a shop and when becoming to electric core, also can annotate liquid through annotating the liquid ware and making the in-process to electric core to realize becoming simultaneously and annotating the process of liquid, the effectual efficiency that has improved and become and annotate the liquid process has reduced time cost, equipment cost and place cost.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic system diagram of an electrolyte-injectable chemical formation apparatus according to an embodiment of the present invention;

fig. 2 is a schematic view of a first view structure of a formation device capable of injecting electrolyte according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a second view angle of a formation device capable of injecting electrolyte according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a chemical cabinet according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a chemical cabinet provided in an embodiment of the present invention.

Icon: 10-formation equipment capable of injecting electrolyte; 100-formation of a cabinet; 110-a probe; 200-liquid injector; 210-liquid injection cup; 220-an injection nozzle; 300-a liquid injection pump; 400-a liquid storage tank; 500-positive and negative pressure generator; 510-a positive voltage source; 520-a negative pressure source; 530-electrolyte filter; 540-proportional valve; 550-negative pressure gauge; 560-positive pressure source filter; 600-a tray; 700-power cabinet; 800-a valve; and (20) preparing a battery cell.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 3, the present invention provides a chemical conversion apparatus 10 capable of injecting electrolyte, which is applied to manufacture a battery cell 20.

The formation equipment 10 capable of injecting electrolyte comprises a formation cabinet 100, an injector 200, an injection pump 300, a liquid storage tank 400, a positive and negative pressure generator 500, a limiting member (not shown), a tray 600, a driving member (not shown), a power supply cabinet 700 and the like.

In this embodiment, the liquid injector 200, the liquid injection pump 300, the positive and negative pressure generator 500, the limiting member, the tray 600 and the driving member are all disposed in the formation cabinet 100, and the liquid storage tank 400 and the power supply cabinet 700 are all connected to the formation cabinet 100 to respectively provide the formation cabinet 100 with electrolyte and electric energy.

Referring to fig. 1 to fig. 5, the formation cabinet 100 is provided with a probe 110, and the probe 110 is used for forming the battery cell 20. One end of the liquid injection pump 300 is connected with the liquid storage tank 400, the other end is connected with the liquid injector 200, and the liquid storage tank 400 is used for storing electrolyte. The injector 200 is used to connect with the battery cell 20 and inject electrolyte into the battery cell 20 during the formation process.

In the present embodiment, the electrolyte in the liquid storage tank 400 is transported to the liquid injector 200 by the liquid injection pump 300, and is injected into the interior of the battery cell 20 through the liquid injector 200 to complete the liquid injection. Therefore, when the probe 110 disposed on the formation cabinet 100 is used for forming the battery cell 20, the liquid injector 200 may be used for injecting liquid into the battery cell 20 during the formation process, so as to implement the processes of forming and injecting liquid simultaneously, thereby effectively improving the efficiency of the formation and injection processes, and reducing the time cost, the equipment cost and the site cost. It will be appreciated that a valve 800 is also typically provided between the infusion pump 300 and the infuser 200.

It should be noted that the formation process generally includes: the formation equipment 10 capable of injecting the electrolyte provided by the embodiment of the utility model can inject the electrolyte in all possible formation procedures after vacuumizing, standing, constant current charging, standing, vacuum breaking and finishing.

Preferably, the injection is performed in a stationary step after the constant current charging, and the injection may be performed in any of a plurality of stationary steps after the constant current charging. So as to supplement the electrolyte consumed by the electrode material and the electrolyte which react on a solid-liquid interface in the constant current charging process to generate a passivation layer (SEI film) covering the surface of the electrode material. The temperature in the formation process is usually 45 ℃, and the electrolyte infiltration can be accelerated under the environmental condition, so that the electrolyte injection is carried out in the static process after the constant-current charging, the problem that the electrolyte of the battery cell 20 cannot be completely injected due to one-time electrolyte injection can be solved, the electrolyte lost due to consumption in the formation process can be supplemented, and the formation and electrolyte injection efficiency of the battery cell 20 is greatly improved.

Further, the number of the liquid injectors 200 includes a plurality of liquid injectors 200, the plurality of liquid injectors 200 correspond to the plurality of battery cells 20 one by one, and the liquid injector pump 300 can be matched with the plurality of liquid injectors 200.

In this embodiment, the formation cabinet 100 is provided with a plurality of liquid injectors 200, and the plurality of liquid injectors 200 may correspond to the plurality of battery cells 20 one by one, so as to simultaneously perform formation and liquid injection on the plurality of battery cells 20. One priming pump 300 can be connected to a plurality of priming devices 200, so that when the priming pump 300 is started, the plurality of priming devices 200 can be used for simultaneously priming the plurality of battery cells 20, thereby improving the production efficiency of the formation equipment 10 capable of priming the electrolyte.

In this embodiment, the number of infusion pumps 300 is also plural, and each infusion pump 300 can be connected to a plurality of infusion sets 200.

Further, the liquid injector 200 includes a liquid injection cup 210 and a liquid injection nozzle 220, one end of the liquid injection cup 210 is connected to the liquid injection pump 300, and the other end is connected to the liquid injection nozzle 220, and the liquid injection nozzle 220 is used for injecting the electrolyte into the battery cell 20 when the liquid injection pump 300 is started. Wherein, the infusion pump 300 is a variable pump or a constant flow pump.

In this embodiment, the liquid injector 200 is fixedly disposed on the formation cabinet 100, and when liquid injection is required, the battery cell 20 needs to be moved to the liquid injector 200, so that the liquid injection hole is aligned with the liquid injection nozzle 220, and liquid injection from the liquid injector 200 to the battery cell 20 is facilitated. It can be understood that the injection pump 300 can be a high-precision variable pump or a constant flow pump, so as to accurately control the injection amount of the electrolyte and improve the injection quality.

Further, the positive/negative pressure generator 500 includes a positive pressure source 510, a negative pressure source 520, and an electrolyte filter 530, the negative pressure source 520 is connected to the electrolyte injection cup 210 through the electrolyte filter 530, and the electrolyte injection nozzle 220 is used to evacuate the interior of the battery cell 20 when the negative pressure source 520 is activated.

In the present embodiment, the negative pressure source 520 is connected to the liquid injection cup 210 to vacuumize the battery cell 20 through the liquid injection nozzle 220, so it can be understood that the liquid injection cup 210 can be used as a buffer cup for liquid injection and also as a negative pressure cup during vacuuming in the formation process. In a similar way, the liquid injection nozzle 220 has both the liquid injection function and the negative pressure pumping function, i.e., the liquid injector 200 has both the negative pressure pumping function and the liquid injection function. In addition, the negative pressure source 520 is connected to the injector 200 to prevent the electrolyte from overflowing.

It should be noted that the liquid injection pipeline and the negative pressure pipeline connected to the liquid injector 200 are made of electrolyte corrosion resistant materials, so as to avoid potential safety hazards caused by corrosion of the liquid injection pipeline and the negative pressure pipeline by the electrolyte, and to improve the service life of the electrolyte injectable chemical conversion equipment 10. The electrolyte filter 530 is used to prevent the electrolyte from being pumped to the positive/negative pressure generator 500 when the negative pressure is pumped, thereby affecting the normal operation of the positive/negative pressure generator 500.

Further, a positive pressure source 510 is connected to the pour cup 210, the positive pressure source 510 being used to provide positive pressure to the pourer 200.

In the present embodiment, the dry gas is output by the positive pressure source 510, so that when the electrolyte is injected into the battery cell 20, the gas output by the positive pressure source 510 acts on the electrolyte by the electrolyte injection cup 210 and is more quickly pressed into the battery cell 20, thereby improving the injection efficiency.

It will be appreciated that the gas output by the positive pressure source 510 is typically an inert gas. Optionally, in this embodiment, the gas output by the positive pressure source 510 is nitrogen.

The positive/negative pressure generator 500 generally includes a proportional valve 540, a negative pressure gauge 550, a positive pressure source filter 560, and the like, and the positive pressure source 510 and the negative pressure source 520 are generally connected to the proportional valve 540 and then connected to the electrolyte filter 530 through the proportional valve 540. The negative pressure gauge 550 is disposed between the proportional valve 540 and the electrolyte filter 530, and the positive pressure source filter 560 is disposed between the positive pressure source 510 and the proportional valve 540. It will be appreciated that a valve 800, as shown in figure 1, is also typically provided between the electrolyte filter 530 and the proportional valve 540.

It should be noted that, in practical applications, the chemical synthesis apparatus 10 capable of injecting electrolyte may not include the positive and negative pressure generator 500, and positive and negative pressure generation apparatuses in a factory building may directly provide positive and negative pressures for the chemical synthesis apparatus, which is not limited herein.

Further, the driving piece sets up in becoming cabinet 100, and tray 600 is connected with the driving piece, and the driving piece is used for making tray 600 drive a plurality of electric cores 20 of placing in tray 600 reach to predetermineeing the position in order to become and annotate the liquid. Wherein, the driving piece is a cylinder.

In this embodiment, the tray 600 can be used to place a plurality of battery cells 20, and the tray 600 can be driven by the driving member to drive the battery cells 20 to a predetermined position, where the plurality of battery cells 20 correspond to the plurality of electrolyte injectors 200 and the plurality of probes 110 one to one. The liquid injection negative pressure nozzle on the liquid injector 200 corresponds to the liquid injection hole of the battery cell 20, and the probe 110 on the formation cabinet 100 corresponds to the pole of the same battery cell 20, so that the battery cell 20 can be simultaneously formed and injected with liquid conveniently.

Specifically, place electric core 20 when tray 600 is in the initial position, place and start the cylinder after accomplishing in order to drive tray 600 and the electric core 20 on the tray 600 and upwards remove, until electric core 20 arrives preset position and becomes and annotate the liquid, accomplish and become and annotate the back and drive electric core 20 downstream on tray 600 and the tray 600 by the cylinder again, until reaching the initial position and lift off electric core 20.

Further, the limiting part is disposed in the formation cabinet 100, and the limiting part is configured to abut against the battery cell 20 when the battery cell 20 moves to the preset position.

In this embodiment, the locating part sets up in annotating liquid ware 200 department and is located the top of tray 600 to when guaranteeing that a plurality of electric cores 20 remove preset position, a plurality of electric cores 20 annotate the liquid hole and a plurality of notes liquid negative pressure mouth one-to-one, a plurality of electric core 20's utmost point post and a plurality of probe 110 one-to-one, avoid a plurality of electric cores 20 to produce the position deviation, prevent that electric core 20 from annotating liquid mouth and probe 110 mutual interference, thereby guarantee to become and annotate the liquid and can go on smoothly, guarantee to become and annotate the operation quality and the production efficiency who annotates the liquid.

Further, the limiting member is provided with a through groove (not shown), and the through groove is used for being slidably matched with the battery cell 20 and guiding the battery cell 20 to move to a preset position.

In this embodiment, when the tray 600 drives the battery cell 20 to move upward, the battery cell 20 first slidably fits the through groove on the positioning member until the battery cell 20 completely fits the through groove and abuts against the positioning member, so as to further ensure that the battery cell 20 can effectively and accurately enter the preset position, thereby facilitating the formation and the smooth injection.

It can be understood that the structure of the limiting member matches the structure of the tray 600, that is, the number of the battery cells 20 on the tray 600 is the same as the number of the through slots on the limiting member.

In this embodiment, the limiting member is further provided with a through hole (not shown), the through hole is communicated with the through groove, and the liquid injection negative pressure nozzle extends into the through hole so as to protect the liquid injection negative pressure nozzle.

Specifically, in this embodiment, after placing electric core 20 on tray 600, drive electric core 20 on tray 600 to predetermineeing the position and cooperate with the locating part through the driving piece, and the notes liquid hole of electric core 20 corresponds with annotating liquid negative pressure mouth this moment, and electric core 20's utmost point post corresponds with probe 110. After the first liquid injection is completed, the negative pressure source 520 is started to vacuumize the interior of the battery, the electric core 20 is charged with a constant current through the probe 110, and in the process of the standing procedure, the liquid injection pump 300 is started to inject the electrolyte into the electric core 20, which can be performed for multiple times to complete electrolyte supplement, so that the whole formation and liquid injection procedure is completed.

In summary, the formation equipment 10 capable of injecting electrolyte provided by the present invention is configured to perform formation on the battery cell 20 through the probe 110 disposed on the formation cabinet 100, and simultaneously inject the electrolyte into the battery cell 20 through the injector 200 during the formation process, so as to implement processes of formation and injection simultaneously, effectively improve efficiency of the formation and injection processes, and reduce time cost, equipment cost and site cost. The injector 200 has both negative pressure pumping and injection functions, and the negative pressure source 520 is connected with the injector 200 to prevent the electrolyte from overflowing. The locating part sets up in annotating liquid ware 200 department and is located tray 600's top to when guaranteeing that electric core 20 removes to predetermineeing the position, annotate the liquid hole and annotate liquid negative pressure mouth and correspond, electric core 20's utmost point post corresponds with probe 110, avoids electric core 20 to produce the position deviation, prevents electric core 20 and annotates liquid mouth and probe 110 mutual interference, thereby guarantees to become and annotates the operation quality and the production efficiency that liquid can go on smoothly with annotating, assurance formation and notes liquid.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A formation device capable of injecting electrolyte is characterized by comprising a formation cabinet, an injector, an injection pump and a liquid storage tank;

2. The formation equipment capable of injecting electrolyte according to claim 1, wherein the injector comprises an injection cup and an injection nozzle, one end of the injection cup is connected with the injection pump, the other end of the injection cup is connected with the injection nozzle, and the injection nozzle is used for injecting the electrolyte into the battery core when the injection pump is started.

3. The injectable electrolyte chemical composition apparatus of claim 1, wherein the injection pump is a variable pump or a constant flow pump.

4. The electrolyte injection formation apparatus according to claim 2, wherein the electrolyte injection formation apparatus comprises a positive and negative pressure generator, the positive and negative pressure generator comprises a negative pressure source and an electrolyte filter, the negative pressure source is connected to the electrolyte injection cup through the electrolyte filter, and the electrolyte injection nozzle is configured to evacuate the interior of the electrical core when the negative pressure source is activated.

5. The injectable electrolyte chemical composition apparatus of claim 4, wherein the positive and negative pressure generator further comprises a positive pressure source connected to the injection cup, the positive pressure source being configured to provide positive pressure to the injector.

6. The electrolyte injection formation equipment according to claim 1, further comprising a tray and a driving member, wherein the driving member is disposed in the formation cabinet, the tray is connected to the driving member, and the driving member is configured to enable the tray to drive the plurality of battery cells disposed on the tray to reach a preset position for formation and injection.

7. The electrolyte injectable chemical formulation apparatus of claim 6, wherein the driving member is a cylinder.

8. The electrolyte injection formation equipment according to claim 6, further comprising a limiting member, disposed in the formation cabinet, for abutting against the battery cell when the battery cell moves to the preset position.

9. The electrolyte injection composition apparatus of claim 8, wherein the limiting member defines a through groove, and the through groove is configured to slidably engage with the battery cell and guide the battery cell to move to the predetermined position.

10. The formation equipment of the injectable electrolyte according to claim 1, wherein the number of the injectors comprises a plurality of injectors, the injectors correspond to the cells one by one, and the injection pump is connected with the injectors.