A battery electrolyte filling system

Abstract

This utility model discloses a battery electrolyte injection system, comprising: a container storing electrolyte; an outlet pipe connected at one end to the container; an injection device disposed at the other end of the outlet pipe; a temperature detection device for acquiring the temperature of the electrolyte, the temperature detection device being disposed near the outlet pipe; and a control module communicatively connected to the control module, the control module being communicatively connected to the injection device. By applying this utility model, a electrolyte injection system suitable for battery electrolyte injection is provided. It controls the specific injection volume of the injection device based on the electrolyte temperature acquired by the temperature detection device, thereby effectively compensating for the injection volume deviation caused by electrolyte density changes due to electrolyte temperature, and thus better ensuring the production quality of the battery.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, and in particular to a battery electrolyte injection system. Background Technology

[0002] Currently, the production process of batteries often involves the electrolyte injection stage of lithium batteries. With the further development of battery technology, the corresponding battery capacity is getting larger and larger, and the amount of electrolyte injected into the corresponding batteries is also getting larger and larger.

[0003] However, as the amount of electrolyte injected into the battery increases, the change in electrolyte density during the entire injection process will directly affect the final injection accuracy of the equipment. In particular, when the temperature of the electrolyte changes, the density of the electrolyte also changes, which will directly affect the actual amount of electrolyte injected into the battery, and thus affect the quality of the finished battery. Utility Model Content

[0004] In view of this, and to solve the above problems, the purpose of this utility model is to provide a battery electrolyte filling system, comprising: A container containing an electrolyte; A liquid outlet pipe, one end of which is connected to the container; The liquid injection device is located at the other end of the liquid outlet pipeline; A temperature detection device is provided to obtain the temperature of the electrolyte, and the temperature detection device is located near the outlet pipeline. The control module is connected in communication with the temperature detection device and the liquid injection device.

[0005] In another preferred embodiment, it further includes a vacuum line and a vacuum generating device, the vacuum generating device being connected to the container via the vacuum line.

[0006] In another preferred embodiment, it further includes an atmospheric communication pipe, one end of which is connected to the container and the other end of which is connected to the atmosphere.

[0007] In another preferred embodiment, a filter is further included, the filter being disposed on the atmospheric communication pipe.

[0008] In another preferred embodiment, the container further includes a liquid level detection tube disposed on one side of the container, the lower end of which is connected to the bottom of the container.

[0009] In another preferred embodiment, the liquid level detection tube is provided with at least one liquid level gauge.

[0010] In another preferred embodiment, the temperature detection device is disposed at the lower end of the liquid level detection tube.

[0011] In another preferred embodiment, the injection device includes an injection pump and an injection pipeline, the outlet pipeline being connected to the input end of the injection pump, the injection pipeline being connected to the output end of the injection pump, and the control module being used to control the operation of the injection pump.

[0012] In another preferred embodiment, the injection pump includes: a pump controller, a pump motor, and a pump body. The pump controller is communicatively connected to the pump motor, the pump motor is drive-connected to the pump body, and the pump controller is communicatively connected to the control module.

[0013] In another preferred embodiment, the control module is a PLC.

[0014] The advantages of this utility model compared to the prior art, due to the adoption of the above-mentioned technical solution, are as follows: By applying this utility model, an electrolyte injection system suitable for battery electrolyte injection is provided. It uses a temperature detection device to obtain the electrolyte temperature to control the specific injection volume of the injection device, thereby effectively compensating for the injection volume deviation caused by the change in electrolyte density due to electrolyte temperature, and thus better ensuring the production quality of the battery. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of an electrolyte injection system for batteries according to the present invention.

[0016] In the attached image: 1. Container; 2. Electrolyte; 3. Discharge line; 4. Injection device; 5. Temperature detection device; 6. Control module; 7. Vacuum line; 8. Atmospheric connection line; 9. Filter; 10. Liquid level detection tube; 11. Liquid level gauge; 12. Injection line; 13. Pump controller; 14. Pump motor; 15. Pump body; 16. Inlet pipe. Detailed Implementation

[0017] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0018] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front", "back", "horizontal", and "vertical" are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] It should be noted that the terms "horizontal" and "vertical" in this utility model are used to describe approximate positional relationships, and not strictly "horizontal plane" or "vertical plane".

[0020] like Figure 1 The diagram illustrates a preferred embodiment of a battery electrolyte filling system, comprising: a container 1 containing electrolyte 2; an outlet pipe 3 connected at one end to the container 1; an filling device 4 disposed at the other end of the outlet pipe 3; a temperature detection device 5 for acquiring the temperature of the electrolyte 2, disposed near the outlet pipe 3; and a control module 6 communicatively connected to the temperature detection device 5 and the filling device 4. Furthermore, the electrolyte 2 stored in container 1 is injected into the corresponding battery through the outlet pipe 3 and the injection device 4. During the injection process, the temperature detection device 5 monitors the temperature of the electrolyte 2 in container 1 in real time. Then, the control module 6 calculates the density of the electrolyte 2 based on the temperature data feedback, and then controls the actual injection volume of the injection device 4 according to the density of the electrolyte 2 and the preset standard injection volume. Specifically, when the temperature of the electrolyte 2 rises, the density of the electrolyte 2 decreases. To ensure the stability of the actual injection quality, the injection device 4 increases the injection volume. Conversely, when the temperature of the electrolyte 2 falls, the density of the electrolyte 2 increases. To ensure the stability of the actual injection quality, the injection device 4 reduces the injection volume.

[0021] Furthermore, as a preferred embodiment, it also includes: an inlet pipe 16, which is connected to the container 1 to provide electrolyte 2 into the container 1.

[0022] Furthermore, as a preferred embodiment, a corresponding inlet pump can also be installed at the inlet pipe 16 to drive the electrolyte 2 into the container 1.

[0023] Furthermore, as a preferred embodiment, it also includes: a vacuum line 7 and a vacuum generating device, the vacuum generating device being connected to the container 1 via the vacuum line 7. Further, the vacuum generating device is used to generate a vacuum and communicate with the interior of the container 1 via the vacuum line 7, thereby facilitating the extraction of external electrolyte 2 into the container 1.

[0024] Furthermore, as a preferred embodiment, it also includes an atmospheric connection pipe 8, one end of which is connected to the container 1, and the other end of which is connected to the atmosphere. Furthermore, the atmospheric connection pipe 8 ensures that the pressure inside the container 1 remains normal after the electrolyte 2 enters it, thereby ensuring that the electrolyte 2 can smoothly enter the outlet pipe 3.

[0025] Furthermore, as a preferred embodiment, the atmospheric connecting pipe 8 and the vacuum pipe 7 are preferably not opened simultaneously.

[0026] Furthermore, as a preferred embodiment, it also includes: a pressure gauge, which is installed on the container 1 and is used to detect the pressure inside the container 1. The system can control the operation of the vacuum generating device, and / or the connection status of the atmospheric connection pipe 8, and / or the connection status of the vacuum pipeline 7 according to the pressure status.

[0027] Furthermore, as a preferred embodiment, it also includes a filter 9, which is disposed on the atmospheric communication pipe 8. The filter 9 further filters the air passing through the atmospheric communication pipe 8, preventing airborne contaminants from entering the container 1.

[0028] Furthermore, as a preferred embodiment, it also includes: a liquid level detection tube 10, which is disposed on one side of the container 1, and the lower end of the liquid level detection tube 10 is connected to the bottom of the container 1.

[0029] Furthermore, as a preferred embodiment, the liquid level detection tube 10 is arranged in an L-shape. Further, the L-shaped structure includes a vertical section and a horizontal section. The vertical section extends vertically and is fixed to the outer wall of the container 1 by a bracket. One end of the horizontal section is connected to the lower end of the vertical section, and the other end of the horizontal section is connected to the bottom of the container 1.

[0030] Furthermore, as a preferred embodiment, at least one level gauge 11 is provided on the level detection tube 10. The level gauge 11 is used to detect the level of the electrolyte 2 in the container 1, thereby controlling whether electrolyte 2 needs to be added to the container 1.

[0031] Furthermore, as a preferred embodiment, a level gauge 11 may be provided at the upper and lower parts of the level detection tube 10, respectively.

[0032] Furthermore, as a preferred embodiment, the liquid level detection tube 10 may be provided with scale lines that are easy to observe directly with the naked eye.

[0033] Furthermore, as a preferred embodiment, the temperature detection device 5 is disposed at the lower end of the liquid level detection tube 10. More preferably, the temperature detection device 5 is disposed on the horizontal section.

[0034] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model.

[0035] Based on the above, this utility model also has the following embodiments: In a further embodiment of the present invention, the injection device 4 includes: an injection pump and an injection pipeline 12, an outlet pipeline 3 connected to the input end of the injection pump, an injection pipeline 12 connected to the output end of the injection pump, and a control module 6 for controlling the operation of the injection pump.

[0036] In a further embodiment of this utility model, the injection pump includes: a pump controller 13, a pump motor 14, and a pump body 15. The pump controller 13 is communicatively connected to the pump motor 14, the pump motor 14 is driveably connected to the pump body 15, and the pump controller 13 is communicatively connected to the control module 6. Furthermore, the pump controller 13 controls the drive of the pump motor 14, thereby driving the pump body 15 to operate. Preferably, the pump motor 14 can drive the pump core within the pump body 15 to achieve controllable output of the electrolyte 2. Specifically, for example, when an increased injection volume is required, the pump motor 14 rotates more, driving the piston of the pump core to travel a longer stroke.

[0037] In a further embodiment of this utility model, the pump motor 14 is preferably a servo motor.

[0038] In a further embodiment of this utility model, the control module 6 is a PLC.

[0039] In a further embodiment of this utility model, a valve may be provided on the liquid outlet pipe 3, the liquid inlet pipe 16, the vacuum pipe 7, and the atmospheric connection pipe 8.

[0040] In a further embodiment of this utility model, container 1 is preferably a tank structure extending in a vertical direction.

[0041] In a further embodiment of this utility model, the tank structure includes a cover and a main body connected vertically, and the cover and the main body are connected by bolts. Furthermore, the overall tank structure adopts a relatively sealed design to effectively reduce the evaporation of electrolyte 2 during the entire liquid injection process, thereby reducing the loss of electrolyte 2.

[0042] In a further embodiment of this utility model, a corrosion-resistant rubber ring is provided between the cover and the main body.

[0043] In a further embodiment of this invention, a forced drainage channel is provided at the lower end of the container 1. Furthermore, the forced drainage channel allows for the emergency discharge of the electrolyte 2 from the container 1 under special circumstances.

[0044] The above description is only a preferred embodiment of the present utility model and does not limit the implementation method and protection scope of the present utility model. Those skilled in the art should realize that all solutions obtained by equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A battery electrolyte filling system, characterized in that, include: A container containing an electrolyte; A liquid outlet pipe, one end of which is connected to the container; The liquid injection device is located at the other end of the liquid outlet pipeline; A temperature detection device is provided to obtain the temperature of the electrolyte, and the temperature detection device is located near the outlet pipeline. The control module is connected in communication with the temperature detection device and the liquid injection device.

2. The battery electrolyte filling system according to claim 1, characterized in that, Also includes: Vacuum piping and a vacuum generating device, wherein the vacuum generating device is connected to the container via the vacuum piping.

3. The battery electrolyte filling system according to claim 1, characterized in that, Also includes: An atmospheric communication pipe, one end of which is connected to the container and the other end of which is connected to the atmosphere.

4. The battery electrolyte filling system according to claim 3, characterized in that, Also includes: A filter is disposed on the atmospheric communication pipe.

5. The battery electrolyte filling system according to claim 1, characterized in that, Also includes: A liquid level detection tube is disposed on one side of the container, and the lower end of the liquid level detection tube is connected to the bottom of the container.

6. The battery electrolyte filling system according to claim 5, characterized in that, The liquid level detection tube is equipped with at least one liquid level gauge.

7. The battery electrolyte filling system according to claim 5, characterized in that, The temperature detection device is located at the lower end of the liquid level detection tube.

8. The battery electrolyte filling system according to claim 1, characterized in that, The injection device includes an injection pump and an injection pipeline. The outlet pipeline is connected to the input end of the injection pump, and the injection pipeline is connected to the output end of the injection pump. The control module is used to control the operation of the injection pump.

9. The battery electrolyte filling system according to claim 8, characterized in that, The injection pump includes a pump controller, a pump motor, and a pump body. The pump controller is communicatively connected to the pump motor, the pump motor is drive-connected to the pump body, and the pump controller is communicatively connected to the control module.

10. The battery electrolyte filling system according to claim 1, characterized in that, The control module is a PLC.

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