Electrolyte injector and control system

Abstract

The utility model provides an electrolyte injector and a control system, and belongs to the field of new energy battery processing. The injector comprises a connector, a tube body, an inner container and a needle head, the connector is arranged at the top of the tube body, an electrolyte connecting port is formed in the connector, the needle head is arranged at the bottom of the tube body, a weight monitor is horizontally arranged in the tube body, a mounting hole is formed in the weight monitor, the inner container is arranged in the tube body, and the bottom of the inner container penetrates through the mounting hole. The top of the inner container is communicated with the electrolyte connecting port, an injection hole is formed in the bottom of the inner container and communicated with the needle head, a first control valve is arranged on the injection hole, and the first control valve is in signal connection with the weight monitor. By adopting the electrolyte injector and the control system provided by the embodiment of the utility model, the problem of low injection efficiency in the prior art can be solved.

Description

Technical Field

[0001] The utility model relates to the field of new energy battery processing, in particular to an electrolyte injector and a control system. Background Art

[0002] With the widespread application of new energy batteries, the demand for improving the processing efficiency of new energy batteries is also increasing. After the new energy batteries are assembled, electrolytes need to be injected into the battery packs through syringes. The amount of electrolyte injected into each battery pack needs to be precisely controlled. This process is an important part of the new energy battery processing.

[0003] The injection method in the prior art is usually to manually weigh the weight of the electrolyte to be injected, then put the electrolyte into a syringe and inject it into the battery pack. During the process, the electrolyte is inverted several times and may react with the air, causing the electrolyte to fail. At the same time, due to the several inversions of the injection liquid, there are more processing steps, which makes the injection efficiency low. Utility Model Content

[0004] The embodiment of the utility model provides an electrolyte injector and a control system, which can solve the problem of low injection efficiency in the prior art. The technical solution is as follows:

[0005] In a first aspect, an electrolyte syringe comprises: a connector, a tube body, an inner liner and a needle.

[0006] The connector is arranged at the top of the tube body, an electrolyte connection port is arranged on the connector, and the needle is arranged at the bottom of the tube body.

[0007] A weight monitor is horizontally arranged in the tube body, a mounting hole is provided on the weight monitor, the inner liner is arranged in the tube body, the bottom of the inner liner is passed through the mounting hole, the top of the inner liner is communicated with the electrolyte connection port, an injection hole is provided at the bottom of the inner liner, the injection hole is communicated with the needle, a first control valve is provided on the injection hole, and the first control valve is connected with the weight monitor signal.

[0008] Optionally, the inner container is in an inverted cone shape.

[0009] Optionally, the cone angle of the inner container is 32 degrees.

[0010] Optionally, the diameter of the injection hole is smaller than the diameter of the needle.

[0011] Optionally, an inert gas storage tank is further included, and an inert gas connection port is provided on the connector, and the inert gas storage tank is connected to the tube body through the inert gas connection port.

[0012] Optionally, the inert gas storage tank is an argon gas storage tank.

[0013] Optionally, the needle is a ceramic piece.

[0014] In a second aspect, an electrolyte injector control system includes the aforementioned electrolyte injector and an automatic controller, wherein a second control valve is provided on the electrolyte connection port, and the weight monitor is connected to the first control valve and the second control valve signals through the automatic controller.

[0015] The beneficial effects brought by the technical solution provided by the embodiment of the utility model include at least:

[0016] An electrolyte syringe and control system provided by an embodiment of the utility model inserts a needle into an injection hole of a battery pack, and a weight monitor and an inner liner are arranged in a tube body. The weight of the electrolyte added to the inner liner is measured by the weight monitor. When the weight of the added electrolyte reaches a target value, the addition of electrolyte is stopped, and the first control valve is opened to allow the electrolyte in the inner liner to flow out through the injection hole and be injected into the battery pack. When the injection is completed, the first control valve is closed, the needle is taken out, and the above operation is repeated to perform the electrolyte injection process on the next battery pack. By injecting with the electrolyte syringe, the process of weighing the electrolyte separately is reduced, thereby improving production efficiency, and can effectively solve the problem of low injection efficiency in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the syringe provided by the embodiment of the utility model;

[0019] Figure 2 It is a schematic diagram of the inner tank structure provided by an embodiment of the utility model;

[0020] Figure 3 It is a structural schematic diagram of a weight monitor provided by an embodiment of the utility model;

[0021] Figure 4 It is a schematic diagram of control signal transmission provided by an embodiment of the utility model.

[0022] In the figure: 1-connector; 11-electrolyte connection port; 12-inert gas connection port; 2-tube body; 3-inner liner; 31-injection hole; 4-needle; 5-weight monitor; 51-mounting hole; 61-first control valve; 62-second control valve; 63-third control valve; 7-inert gas storage tank; 8-automatic controller. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0024] Figure 1 It is a schematic diagram of the overall structure of the syringe provided by the embodiment of the utility model; Figure 2 It is a schematic diagram of the inner tank structure provided by an embodiment of the utility model; Figure 3 It is a structural schematic diagram of a weight monitor provided by an embodiment of the utility model; Figure 4 Schematic diagram of control signal transmission provided by the embodiment of the utility model. Figures 1 to 4 An electrolyte syringe shown in the figure includes: a connector 1, a tube body 2, an inner liner 3 and a needle 4, the connector 1 is arranged at the top of the tube body 2, the connector 1 is provided with an electrolyte connection port 11, the needle 4 is arranged at the bottom of the tube body 2, a weight monitor 5 is horizontally arranged in the tube body 2, a mounting hole 51 is opened on the weight monitor 5, the inner liner 3 is arranged in the tube body 2, the bottom of the inner liner 3 is penetrated by the mounting hole 51, the top of the inner liner 3 is connected with the electrolyte connection port 11, the bottom of the inner liner 3 is provided with an injection hole 31, the injection hole 31 is connected with the needle 4, a first control valve 61 is arranged on the injection hole 31, and the first control valve 61 is connected with the weight monitor 5 signal.

[0025] Illustratively, in an embodiment of the utility model, the other end of the needle 4 is inserted into the injection hole of the battery pack, the electrolyte connection port 11 is connected to the external electrolyte storage tank, the electrolyte is injected into the inner liner 3 of the tube body 2 through the electrolyte connection port 11, and the weight monitor 5 monitors the weight of the inner liner 3 filled with electrolyte, and the weight of the electrolyte injected into the battery pack is determined according to the preset requirements. When the weight monitor 5 detects that the weight of the inner liner 3 reaches the set threshold, the electrolyte connection port 11 is closed to stop the injection of the electrolyte, and then a signal is transmitted to the first control valve 61 through the weight monitor 5 to open the first control valve 61, so that the electrolyte in the inner liner 3 is injected into the battery pack through the needle 4. When the injection is completed, the first control valve 61 is closed, the needle 4 is taken out, and the next battery pack to be processed is moved to the bottom of the needle 4, and the above operation can be repeated to perform the next electrolyte injection process. The inner liner 3 also has the function of storing electrolyte. In this case, a large amount of electrolyte is added to the inner liner 3 at one time. At this time, the weight monitor 5 weighs the electrolyte in the inner liner 3. When injecting the battery pack, the first control valve 61 is opened, and the weight of the electrolyte to be injected into the battery pack is determined in advance. When the weight monitor 5 detects that the weight of the electrolyte in the inner liner 3 is reduced by the set weight of the electrolyte to be injected into the battery pack, the first control valve 61 is closed, and then the needle 4 is pulled out, and the above operation is repeated for the next battery pack for injection processing. Through this method, the electrolyte in the inner liner 3 can be injected into multiple battery packs at one time, and there is no need to add electrolyte after each injection. When performing large-scale processing, repeated processes are reduced and processing efficiency is improved.

[0026] An electrolyte injector and control system provided by an embodiment of the utility model inserts a needle 4 into the injection hole of a battery pack, and a weight monitor 5 and an inner liner 3 are arranged in a tube body 2. The weight of the electrolyte added to the inner liner 3 is measured by the weight monitor 5. When the weight of the added electrolyte reaches the target value, the addition of the electrolyte is stopped, and the first control valve 61 is opened to allow the electrolyte in the inner liner 3 to flow out through the injection hole 31 and be injected into the battery pack. When the injection is completed, the first control valve 61 is closed, the needle 4 is taken out, and the above operation is repeated to perform the electrolyte injection process on the next battery pack. By injecting with the electrolyte injector, the process of weighing the electrolyte separately is reduced, thereby improving the production efficiency, and can effectively solve the problem of low injection efficiency in the prior art.

[0027] Optionally, the inner container 3 is in an inverted cone shape.

[0028] Exemplarily, in an embodiment of the utility model, when the inner liner 3 is set to an inverted cone shape, the electrolyte can be more smoothly injected into the battery pack through the injection hole 31 after being added to the inner liner 3. At the same time, since the inner liner 3 is an inverted cone, the electrolyte in the inner liner 3 will not remain on the inner wall of the inner liner 3. Compared with making the inner liner 3 into a square shape or the like, the inverted cone-shaped inner liner 3 does not have a dead angle for the flow of the electrolyte, and the electrolyte can be injected into the battery pack through the injection hole 31 to the greatest extent, thereby ensuring the weight of the electrolyte injected into the battery pack, thereby increasing the accuracy of the electrolyte injector.

[0029] Optionally, the cone angle of the inner container 3 is 32 degrees.

[0030] For example, in the embodiment of the present utility model, Figure 1 As shown, in the cross-sectional view, when the cross-section of the liner 3 and the tube body 2 are at an angle of 16 degrees, the electrolyte can slide along the inner wall of the liner 3 into the injection hole 31 most smoothly, thereby preventing residual electrolyte on the inner wall of the liner 3, thereby ensuring the weight of the electrolyte injected into the battery pack and further increasing the accuracy of the electrolyte injector.

[0031] Optionally, the diameter of the injection hole 31 is smaller than the diameter of the needle 4 .

[0032] Illustratively, in an embodiment of the utility model, when the diameter of the injection hole 31 is smaller than the diameter of the needle 4, the electrolyte will not contact the inner wall of the needle 4 when flowing out through the injection hole 31, so that no electrolyte will remain on the needle 4, thereby ensuring the weight of the electrolyte injected into the battery pack, thereby further increasing the accuracy of the electrolyte injector.

[0033] Optionally, an inert gas storage tank 7 is further included. An inert gas connection port 12 is provided on the connector 1 , and the inert gas storage tank 7 is connected to the tube body 2 through the inert gas connection port 12 .

[0034] For example, in the embodiment of the utility model, after the electrolyte is injected into the inner liner 3, the inert gas storage tank 7 is injected into the inner liner 3 through the inert gas connection port 12. On the one hand, the injected gas will increase the air pressure in the inner liner 3, so that the electrolyte in the inner liner 3 can be injected into the battery pack more quickly and smoothly, thereby further increasing the accuracy of the electrolyte injector. On the other hand, by injecting inert gas into the inner liner 3, the gas atmosphere inside the tube body 2 can be ensured to prevent the electrolyte from deteriorating and becoming ineffective due to contact with air, thereby improving the stability of the electrolyte injector.

[0035] Optionally, the inert gas storage tank 7 is an argon gas storage tank.

[0036] Illustratively, in the embodiment of the utility model, the gas stored in the inert gas storage tank 7 is argon. Compared with other inert gases, argon has the advantages of being non-toxic and harmless. At the same time, the cost of argon purification is relatively low. Low-purity argon can be easily obtained by separating air. By using argon, the production cost of the electrolyte injection device can be reduced.

[0037] Optionally, the needle 4 is a ceramic piece.

[0038] Illustratively, in an embodiment of the utility model, the needle 4 is made of ceramics. Ceramics have the characteristic of high hardness and are more suitable as a material for making the needle 4. At the same time, the chemical properties of ceramics are stable and will not react with the electrolyte, thereby ensuring the stability of the chemical properties of the electrolyte injected into the battery pack, thereby further improving the stability of the electrolyte syringe.

[0039] An electrolyte injector control system includes the aforementioned electrolyte injector and an automatic controller 8. A second control valve 62 is provided on the electrolyte connection port 11. A weight monitor 5 is connected to the first control valve 61 and the second control valve 62 through the automatic controller 8.

[0040] For example, in the embodiment of the present utility model, a third control valve 63 is provided on the inert gas connection port 12. Figure 4As shown, after the needle 4 is inserted into the injection hole of the battery pack, the second control valve 62 is controlled to open by the automatic controller 8 to inject electrolyte into the inner liner 3. When the weight monitor 5 detects that the weight of the electrolyte in the inner liner 3 reaches the standard value, the weight monitor 5 sends a signal to the automatic controller 8, so that the automatic controller 8 controls the second control valve 62 to close, and controls the third control valve 63 and the first control valve 61 to open, so that the electrolyte in the inner liner 3 is injected into the battery pack. After the injection is completed, when the weight monitor 5 detects that the weight of the inner liner 3 returns to zero, it sends a signal to the automatic controller 8 to control the third control valve 63 and the first control valve 61 to close. After the needle 4 is pulled out, the next battery pack is placed under the needle 4, and the above control process is repeated. When a large amount of electrolyte can be stored in the inner liner 3, the electrolyte injection process can be optimized. First, a large amount of electrolyte is added to the inner liner 3, and the electrolyte in the inner liner 3 is weighed by the weight monitor 5. According to the pre-set weight of the electrolyte to be injected into the battery pack, when the injector injects the battery pack, when the weight monitor 5 detects that the electrolyte weight reduced in the inner liner 3 is equal to the electrolyte weight to be injected into the battery pack, the weight monitor 5 sends a signal to the automatic controller 8, so that the automatic controller 8 controls the first control valve 62 to close. When the next battery pack is injected, the above process is repeated until the weight monitor 5 detects that the electrolyte in the inner liner 3 is less than the electrolyte weight to be injected into the battery pack once, and then sends a signal to the automatic controller 8 to control the second control valve 62 to open, and inject electrolyte into the inner liner 3. By setting the automatic controller 8, the work flow of the electrolyte injector can be fully automated, reducing the cost of human labor, thereby improving the automation of the electrolyte injector control system.

[0041] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by persons with ordinary skills in the field to which the utility model belongs. The words "first", "second" and similar words used in the specification and claims of the utility model patent application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not indicate a quantity limitation, but indicate the existence of at least one. Words such as "include" or "comprise" mean that the elements or objects appearing before "include" or "comprise" include the elements or objects listed after "include" or "comprise" and their equivalents, and do not exclude other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0042] The above description is only an optional embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An electrolyte syringe, characterized in that: include: Connector (1), tube body (2), liner (3) and needle (4), The connector (1) is arranged on the top of the tube body (2), and an electrolyte connection port (11) is arranged on the connector (1). The needle (4) is arranged on the outside of the bottom of the tube body (2). A weight monitor (5) is horizontally arranged in the tube body (2), and a mounting hole (51) is provided on the weight monitor (5). The inner liner (3) is arranged in the tube body (2), and the bottom of the inner liner (3) is penetrated through the mounting hole (51). The top of the inner liner (3) is connected to the electrolyte connection port (11). An injection hole (31) is provided at the bottom of the inner liner (3), and the injection hole (31) is connected to the needle (4). A first control valve (61) is provided on the injection hole (31), and the first control valve (61) is connected to the weight monitor (5) by signal.

2. The electrolyte injector according to claim 1, characterized in that: The inner container (3) is in the shape of an inverted cone.

3. The electrolyte injector according to claim 2, characterized in that: The cone angle of the inner container (3) is 32 degrees.

4. The electrolyte injector according to claim 1, characterized in that: The diameter of the injection hole (31) is smaller than the diameter of the needle (4).

5. The electrolyte injector according to claim 1, characterized in that: It also comprises an inert gas storage tank (7), the connector (1) is provided with an inert gas connection port (12), and the inert gas storage tank (7) is connected to the tube body (2) via the inert gas connection port (12).

6. The electrolyte injector according to claim 5, characterized in that: The inert gas storage tank (7) is an argon gas storage tank.

7. The electrolyte injector according to claim 1, characterized in that: The needle (4) is a ceramic piece.

8. An electrolyte injector control system, comprising the electrolyte injector according to any one of claims 1 to 7, characterized in that: It also includes an automatic controller (8), a second control valve (62) is provided on the electrolyte connection port (11), and the weight monitor (5) is connected to the first control valve (61) and the second control valve (62) through the automatic controller (8).

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