A liquid level-flow integrated dynamic measurement device for battery tank volume

Abstract

This utility model discloses a liquid level-flow integrated dynamic measurement device for battery tank volume, comprising: a workbench with a testing station for placing the battery tank during testing; a mounting bracket at the testing station on the workbench; a liquid level sensing module including a distance sensor mounted on the mounting bracket above the testing station; and a water injection module including a pipe for injecting water into the battery tank, with a flow meter installed on the pipe. During testing, this liquid level-flow integrated dynamic measurement device injects water into the battery tank via the water injection module. During the water injection process, the flow meter detects the flow rate to obtain the current water volume in the battery tank. The distance sensor in the liquid level sensing module detects the liquid level in the battery tank in real time, thereby obtaining the correspondence between the liquid level height and volume in real time, improving testing efficiency and accuracy.

Description

Technical Field

[0001] This utility model belongs to the field of battery quality testing technology, specifically relating to a liquid level-flow integrated dynamic measurement device for battery tank volume. Background Technology

[0002] Lead-acid batteries and some lithium batteries include a battery case in their structure, and the volume of the battery case affects the battery's performance. Furthermore, most battery cases are divided into multiple individual cells, each used to assemble a group of electrodes (lead-acid batteries) or several battery cells (lithium batteries). It is necessary to ensure that the volume of each individual cell in the battery case is consistent, or that the differences between them are within a certain range. Therefore, it is necessary to test the volume of the battery case.

[0003] The existing technology for detecting battery compartment volume has the following technical problems:

[0004] Manual measurement is inefficient: Traditional methods require manually filling water to the target height and then manually calculating the liquid volume, which is time-consuming and easily affected by operational errors.

[0005] Single sensor accuracy is insufficient: Relying solely on a liquid level sensor is susceptible to interference from bubbles and liquid surface fluctuations, and cannot directly correlate height and volume;

[0006] Poor adaptability to complex structures: There is a lack of automated solutions for local volume measurement of irregularly shaped battery compartments (such as multi-cavity and curved surface designs). For example, the utility model with authorization announcement number CN222826496U discloses a high-capacity battery compartment with a thickness gradient. The inner cavity of the high-capacity battery compartment is divided into multiple individual cells by ribs. The ribs are divided into multiple regions from bottom to top, and the thickness of each region decreases in a gradient from bottom to top. Summary of the Invention

[0007] This invention addresses the aforementioned shortcomings in the existing technology by providing a liquid level-flow integrated dynamic measurement device for battery tank volume.

[0008] A liquid level-flow integrated battery tank volume dynamic measurement device, comprising:

[0009] A workbench, wherein the workbench is provided with a testing station for placing the battery slot during testing;

[0010] The mounting bracket is located at the testing station of the workbench;

[0011] The liquid level sensing module includes a distance sensor mounted on the mounting bracket and located above the detection station;

[0012] The water injection module includes a pipe for injecting water into the battery compartment, and the pipe is equipped with a flow meter.

[0013] Preferably, the mounting bracket includes several support columns and a mounting plate that spans across the detection station, and the distance sensor is mounted on the mounting plate.

[0014] More preferably, the water injection module further includes a water tank, one end of the pipeline is connected to the water tank, and the other end is fixed to the mounting plate and used to inject water into the battery compartment;

[0015] The water injection module also includes a water pump installed in the pipeline.

[0016] More preferably, the water tank is located below the workbench;

[0017] The workbench is also equipped with a water return module, which includes a flared opening on the workbench and a water return pipe connected to the water tank below the flared opening.

[0018] A more preferred embodiment of the integrated level-flow battery tank volume dynamic measurement device further includes a control module, which controls the distance sensor to detect and record detection data, and also controls the operation of the water pump.

[0019] More preferably, the integrated level-flow battery tank volume dynamic measurement device further includes a display for displaying the level data detected by the distance sensor and the flow data detected by the flow meter.

[0020] Preferably, the distance sensor is an ultrasonic sensor.

[0021] This utility model's integrated liquid level-flow rate battery tank volume dynamic measurement device injects water into the battery tank via a water injection module during testing. During the water injection process, a flow meter detects the flow rate to obtain the current water volume in the battery tank. The distance sensor in the liquid level sensing module detects the liquid level in the battery tank in real time, thereby obtaining the correspondence between the liquid level height and the volume (the volume of the currently water-filled part) in real time, improving testing efficiency and accuracy. Attached Figure Description

[0022] Figure 1 This is a side view of the dynamic measurement device for the liquid level-flow integrated battery tank volume of this utility model.

[0023] Figure 2 This is a three-dimensional structural diagram of the integrated liquid level-flow rate battery tank volume dynamic measurement device of this utility model.

[0024] Figure 3 This is a structural diagram of the liquid level sensing module, water injection module, and water return module.

[0025] Figure 4This is a side view of the distance sensor and its mounting bracket.

[0026] Figure 5 for Figure 4 A cross-sectional view along the AA direction.

[0027] Figure 6 This is a three-dimensional structural diagram of the distance sensor and its mounting bracket.

[0028] Reference numerals: Battery compartment 1, Workbench 2, Mounting bracket 3, Support column 301, Mounting plate 302, Distance sensor 4, Mounting ring 401, Pipeline 5, Flow meter 6, Water tank 7, Water pump 8, Horn mouth 9, Return water pipe 10, Control module 11, Display 12. Detailed Implementation

[0029] like Figures 1-6 As shown, a liquid level-flow integrated dynamic measurement device for battery tank volume is used to detect the volume of battery tank 1. Battery tank 1 has 6 individual cells, and each cell is measured individually during the test. The liquid level-flow integrated dynamic measurement device for battery tank volume of this application includes a workbench 2, on which a testing station for placing battery tank 1 during the test is provided, and a mounting bracket 3 is provided at the testing station.

[0030] The structure of the mounting bracket 3 includes several support columns 301 and a mounting plate 302 that spans across and is positioned above the inspection station. For example... Figure 1 and Figure 2 As shown, the mounting bracket 3 is mounted on the workbench 2 via four support columns 301 at the four corners. The two sides are used for the battery compartment 1 to pass through. The spacing between the support columns 301 on both sides needs to be wide enough to ensure that the battery compartment 1 can pass through. The mounting plate 302 is slightly higher than the battery compartment 1, and a certain amount of height needs to be reserved for the installation of the structure for detecting the liquid level and the outlet end of the water injection pipe.

[0031] like Figures 1-3 As shown, the integrated level-flow battery tank volume dynamic measurement device of this application also includes a level sensing module. The level sensing module includes a distance sensor 4 mounted on the mounting plate 302 and located above the detection station. The distance sensor 4 faces the battery tank 1 placed at the detection station from above. The distance sensor 4 can be used to detect the water level in the battery tank 1 after a certain amount of water has been added. The current water level is obtained by subtracting the height detected by the distance sensor 4 after adding water from the height detected when no water is added. Preferably, the distance sensor 4 is an ultrasonic sensor.

[0032] like Figures 4-6As shown, the distance sensor 4 has a mounting ring 401 on its outer periphery. The mounting plate 302 has a mounting hole with internal threads, and the mounting ring 401 has external threads on its outer periphery. The mounting ring 401 is installed in the mounting hole via a threaded fit. Then, the detection head of the distance sensor 4 extends downwards and is assembled into the mounting ring 401. By rotating the mounting ring 401, its height can be adjusted within a certain range, thereby adjusting the installation height of the distance sensor 4.

[0033] like Figures 1-3 As shown, the integrated level-flow battery tank volume dynamic measurement device of this application also includes a water injection module. The water injection module includes a pipeline 5 for injecting water into the battery tank. A flow meter 6 for detecting the flow rate and a water pump 8 for driving the water flow are installed on the pipeline 5. In the structure shown in the figure, the flow meter 6 is located downstream of the water pump 8. This ensures that the flow meter 6's flow rate detection is not affected by the operation of the water pump 8, making the detection more accurate. The flow meter 6 can use a high-precision electromagnetic flow meter (model: IFM4080K) with a range of 0.1-10 L / min and a 4-20 mA analog signal output.

[0034] The water filling module also includes a water tank 7. One end of the pipe 5 is connected to the water tank 7, and the other end is fixed to the mounting plate 302 for filling water into the battery compartment 1. The main body of the pipe 5 is a flexible tube, such as a silicone tube, which facilitates connection and allows the use of a relatively simple flexible tube-driven water pump as a water pump 8. A rigid tube is connected to the outlet end of the pipe 5 for fixed installation on the mounting plate 302, ensuring that the water filling direction is vertically downward during filling to prevent the outlet end of the pipe 5 from shaking during filling.

[0035] Water tank 7 is located below workbench 2. Workbench 2 also has a water return module, which includes a flared outlet 9 on workbench 2, and a water return pipe 10 connecting to water tank 7 located below the flared outlet 9. After one battery compartment 1 has been tested, the water in the battery compartment 1 is manually poured back into water tank 7 through the flared outlet 9 for reuse. The water return pipe has a larger diameter than the inlet pipe 5 to prevent excessive water flow from overflowing from the flared outlet 9 during pouring.

[0036] like Figures 1-3 As shown, the integrated level-flow battery tank volume dynamic measurement device also includes a control module 11. The control module 11 controls the distance sensor 4 to detect and record detection data, and also controls the operation of the water pump 8. The main control chip in the control module 11 can be an STM32F407 chip, integrating a PID control algorithm. The control module 11 is connected to the distance sensor 4, flow meter 6, and water pump 8 via signal lines.

[0037] The control module 11 is also equipped with a display 12, which is used to display the liquid level data detected by the distance sensor 4 and the flow rate data detected by the flow meter 6.

[0038] This utility model's integrated liquid level-flow rate battery tank volume dynamic measurement device injects water into the battery tank 1 through a water injection module during testing. During the water injection process, the flow meter 6 detects the flow rate to obtain the current water volume in the battery tank 1. The distance sensor 4 in the liquid level sensing module detects the liquid level in the battery tank 1 in real time, thereby obtaining the correspondence between the liquid level height and the volume (the volume of the currently water-filled part) in real time, improving the testing efficiency and accuracy.

Claims

1. A liquid level-flow integrated dynamic measurement device for battery tank volume, characterized in that, include: A workbench, wherein the workbench is provided with a testing station for placing the battery slot during testing; The mounting bracket is located at the testing station of the workbench; The liquid level sensing module includes a distance sensor mounted on the mounting bracket and located above the detection station; The water injection module includes a pipe for injecting water into the battery compartment, and the pipe is equipped with a flow meter.

2. The integrated level-flow rate battery tank volume dynamic measurement device according to claim 1, characterized in that, The mounting bracket includes several support columns and a mounting plate that spans across the detection station, with the distance sensor mounted on the mounting plate.

3. The integrated level-flow rate battery tank volume dynamic measurement device according to claim 2, characterized in that, The water injection module also includes a water tank, one end of the pipeline is connected to the water tank, and the other end is fixed to the mounting plate and used to inject water into the battery compartment; The water injection module also includes a water pump installed in the pipeline.

4. The integrated level-flow rate battery tank volume dynamic measurement device according to claim 3, characterized in that, The water tank is located below the workbench; The workbench is also equipped with a water return module, which includes a flared opening on the workbench and a water return pipe connected to the water tank below the flared opening.

5. The integrated level-flow rate battery tank volume dynamic measurement device according to claim 3, characterized in that, It also includes a control module, which is used to control the distance sensor to detect and record detection data, and the control module is also used to control the operation of the water pump.

6. The integrated level-flow rate battery tank volume dynamic measurement device according to claim 5, characterized in that, It also includes a display for displaying liquid level data detected by the distance sensor and flow rate data detected by the flow meter.

7. The integrated level-flow rate battery tank volume dynamic measurement device according to claim 1, characterized in that, The distance sensor is an ultrasonic sensor.

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