Testing method of acid adding device for industrial gel battery

Abstract

The invention discloses a method for testing an acid adding device for an industrial gel battery, which comprises the following steps of: setting an acid adding amount value of the acid adding device, respectively adding acid into a plurality of measuring cups, weighing the measuring cups after acid adding by using an electronic balance, and testing the accuracy of the acid adding amount, the stability of the acid adding speed, the uniformity of acid liquor and a plurality of actual working conditions. The performance of the acid adding device can be comprehensively and systematically evaluated, problems which are difficult to detect by a traditional test method can be found, the accurate and reliable test method is beneficial to optimizing the parameters and the performance of the acid adding device, the accuracy and the stability of acid adding operation in industrial gel battery production are ensured, the consistency and the quality of the battery are improved, and the production cost is reduced. The service life of the battery is prolonged, possible fault hidden dangers of the acid adding device in long-time work and in different environments are found in advance by simulating actual working condition tests, maintenance and improvement are carried out in time, the downtime in the production process is shortened, the defective rate in the production process is reduced, and the production cost is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of battery production equipment detection, and particularly relates to a testing method for an acid adding device for industrial gel batteries. Background Art

[0002] As a new type of battery, gel batteries have attracted much attention for their long service life and high energy density. It uses a gel electrolyte instead of a traditional liquid electrolyte and can exhibit excellent performance in some special environments, such as extremely cold and high-temperature environments. Therefore, it has a wide range of applications in the fields of aerospace, military, new energy vehicles, etc. In the production process of gel batteries, acid addition is a crucial step. In the production process of industrial gel batteries, the performance of the acid adding device directly affects the quality and production efficiency of the batteries. Accurate and stable acid addition operations can ensure the consistency of the internal chemical reactions of the batteries, improving the capacity, life, and stability of the batteries. However, there are many deficiencies in the existing testing methods for acid adding devices. On the one hand, most tests only focus on the accuracy of the acid addition amount, ignoring key factors such as the acid addition speed, acid solution uniformity, and the impact of the acid addition process on the internal structure of the batteries. On the other hand, traditional testing methods lack a comprehensive evaluation of the performance of the acid adding device under different working conditions and cannot effectively simulate the complex situations in industrial production, resulting in the acid adding device being prone to failures in actual production, affecting the battery quality and production progress. Therefore, we need to provide a testing method for an acid adding device for industrial gel batteries. Summary of the Invention

[0003] The object of the present invention is to provide a testing method for an acid addition device for industrial gel batteries. By testing the accuracy of the acid addition amount, the stability of the acid addition speed, the uniformity of the acid solution, and various actual working conditions, the performance of the acid addition device can be comprehensively and systematically evaluated, problems that are difficult to detect by traditional testing methods can be found. An accurate and reliable testing method helps to optimize the parameters and performance of the acid addition device, ensure the accuracy and stability of the acid addition operation in the production of industrial gel batteries, thereby improving the consistency and quality of the batteries, extending the service life of the batteries. Through simulating actual working conditions for testing, potential faults that may occur in the acid addition device during long-term operation and different environments can be detected in advance, and maintenance and improvement can be carried out in a timely manner, reducing the downtime and defective product rate during the production process, and lowering the production cost. Through multi-dimensional and multi-condition testing, the performance of the acid addition device can be comprehensively and accurately evaluated, providing a reliable basis for the optimization of the acid addition device and the high-quality production of industrial gel batteries, so as to solve the problems existing in the existing testing methods of acid addition devices in the prior art mentioned in the above background technology. On the one hand, most tests only focus on the accuracy of the acid addition amount, ignoring key factors such as the acid addition speed, the uniformity of the acid solution, and the impact of the acid addition process on the internal structure of the battery. On the other hand, traditional testing methods lack a comprehensive evaluation of the performance of the acid addition device under different working conditions and cannot effectively simulate the complex situations in industrial production, resulting in the acid addition device being prone to failures in actual production, affecting the battery quality and production progress.

[0004] To achieve the above object, the present invention adopts the following technical solutions: A testing method for an acid addition device for industrial gel batteries, comprising the following steps:

[0005] Set the acid addition amount value of the acid addition device, perform acid addition operations on multiple measuring cups respectively, and use an electronic balance to weigh the measuring cups after acid addition. Calculate the actual acid addition amount according to the density of sulfuric acid, and compare the actual acid addition amount with the set acid addition amount to verify the accuracy of the acid addition amount of the acid addition device;

[0006] For the acid addition device with accurate acid addition amount, add acid to the test battery pack. By setting different acid addition speed gears on the flow sensor of the acid addition device, continuously add acid for a period of time at each gear, and record the data changes of the flow sensor during the acid addition process to evaluate the stability of the acid addition speed;

[0007] Arrange multiple micro acidity sensors between the electrode plates of the test battery pack. Use the acid addition device with stable acid addition speed to add acid to the test battery pack. After acid addition, let it stand for 30 minutes and measure the acid solution concentration. Measure the acid solution concentration at different positions through the acidity sensors, and calculate the standard deviation of the acid solution concentration at each position. The smaller the standard deviation, the more uniform the distribution of the acid solution inside the battery;

[0008] Perform simulated actual working condition tests on the acid addition device with accurate acid addition amount, stable acid addition speed, and uniform acid addition, and recalibrate the acid addition device that does not meet the requirements. The simulated actual working condition tests include temperature influence tests, continuous working tests, and battery different initial state tests;

[0009] Obtain comprehensive and systematic test results for evaluating the acid addition device for the acid addition device that passes the simulated actual working condition tests.

[0010] Preferably, the acid addition operation includes:

[0011] Set the acid addition amount set values to 100 ml, 200 ml, 300 ml, 400 ml, and 500 ml respectively, and add acid 5 times for each set value. The precision of the high-precision electronic balance is 0.01 g.

[0012] Preferably, the evaluation of the accuracy of the acid addition amount of the acid addition device includes:

[0013] Set the acid addition amount to 200 ml and calculate the actual acid addition amount

[0014] Given that the density of sulfuric acid is 1.84 g / cm3, the 5 actual acid addition amounts are 199.8 ml, 200.2 ml, 199.9 ml, 200.1 ml, and 200.0 ml respectively. The average error is (|199.8 - 200| + |200.2 - 200| + |199.9 - 200| + |200.1 - 200| + |200 - 200|) ÷ 5 ÷ 200 × 100% = 0.1%.

[0015] Preferably, the precision of the flow sensor is 1 ml / min. Test the battery pack for acid addition for 10 minutes, record the flow data, and calculate the speed fluctuation coefficient.

[0016] Preferably, the temperature range in the environmental test chamber is -10°C - 50°C.

[0017] Preferably, the continuous working time of the acid addition device is 8 hours, and the acid addition amount and acid addition speed are tested every 2 hours.

[0018] Preferably, the battery packs in different initial states include: test battery packs that are completely dry, have a water content of 10% of the battery capacity, and have a water content of 20% of the battery capacity, and perform acid addition tests.

[0019] Preferably, the temperature influence test includes: placing the acid addition device and the test battery pack in the environmental test chamber and analyzing the influence of temperature on the performance of the acid addition device;

[0020] The continuous operation test includes: continuously and uninterruptedly adding acid to a large number of test battery packs by the acid adding device, simulating long-term production conditions, recording the performance changes of the acid adding device during continuous operation, and evaluating its reliability during long-term operation;

[0021] The test of different initial states of the battery includes: preparing test battery packs in a completely dry and partially pre-wetted state, and under the same acid adding conditions, adding acid to the battery packs in different initial states, testing the accuracy of the acid addition amount, the stability of the acid addition speed, and the uniformity of the acid solution, and analyzing the influence of the initial state of the battery on the acid addition effect.

[0022] Preferably, the calculation of the speed fluctuation coefficient includes: recording the flow data, plotting the flow-time curve, setting the acid addition speed gear to 50 ml / min, the maximum flow rate to 52 ml / min, the minimum flow rate to 48 ml / min, and the average flow rate to 50 ml / min. Then the speed fluctuation coefficient = (52 - 48) ÷ 50 × 100% = 8%.

[0023] Preferably, five micro acidity sensors are arranged between the electrode plates of the test battery pack.

[0024] The technical effects and advantages of the present invention: A test method for an acid adding device for industrial gel batteries proposed by the present invention has the following advantages compared with the prior art:

[0025] By testing the accuracy of the acid addition amount, the stability of the acid addition speed, the uniformity of the acid solution, and various actual working conditions, the present invention can comprehensively and systematically evaluate the performance of the acid adding device, discover problems that are difficult to detect by traditional test methods. An accurate and reliable test method helps to optimize the parameters and performance of the acid adding device, ensure the accuracy and stability of the acid addition operation in the production of industrial gel batteries, thereby improving the consistency and quality of the batteries, extending the service life of the batteries. By simulating actual working conditions for testing, potential faults that may occur during long-term operation and in different environments of the acid adding device can be discovered in advance, and maintenance and improvement can be carried out in a timely manner, reducing the downtime and defective rate during the production process, reducing production costs. Through multi-dimensional and multi-condition testing, the performance of the acid adding device can be comprehensively and accurately evaluated, providing a reliable basis for the optimization of the acid adding device and the high-quality production of industrial gel batteries.

[0026] Other features and advantages of the present invention will be described in the following specification, and part of them will become obvious from the specification or be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the structures pointed out in the specification and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a flowchart of the steps of the present invention. DETAILED DESCRIPTION OF THE INVENTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0029] The present invention provides a test method for an acid adding device for an industrial colloidal battery as Figure 1 shown, including the following steps:

[0030] Set the acid adding amount value of the acid adding device, perform acid adding operations on multiple measuring cups respectively, and use an electronic balance to weigh the measuring cups after acid adding. Calculate the actual acid adding amount according to the density of sulfuric acid, and compare the actual acid adding amount with the set acid adding amount to verify the accuracy of the acid adding amount of the acid adding device;

[0031] For the acid adding device with accurate acid adding amount, add acid to the test battery pack. By setting different acid adding speed gears on the flow sensor of the acid adding device, continuously add acid for a period of time at each gear, and record the data changes of the flow sensor during the acid adding process to evaluate the stability of the acid adding speed;

[0032] Arrange multiple micro acidity sensors between the electrode plates of the test battery pack. Use the acid adding device with stable acid adding speed to add acid to the test battery pack. After acid adding, let it stand for 30 minutes and measure the acid solution concentration. Measure the acid solution concentration at different positions through the acidity sensors, and calculate the standard deviation of the acid solution concentration at each position. The smaller the standard deviation, the more uniform the distribution of the acid solution inside the battery;

[0033] Perform simulated actual working condition detection on the acid adding device with accurate acid adding amount, stable acid adding speed and uniform acid adding. Re calibrate the acid adding device that does not meet the requirements. The simulated actual working condition detection includes temperature influence test, continuous working test and battery different initial state test;

[0034] Comprehensively and systematically evaluate the test results of the acid adding device for the acid adding device that passes the simulated actual working condition detection.

[0035] The acid adding operation includes:

[0036] Set the acid adding amount set values to 100 ml, 200 ml, 300 ml, 400 ml, 500 ml respectively, and add acid 5 times for each set value. The accuracy of the high-precision electronic balance is 0.01 g;

[0037] Specifically, prepare multiple standard measuring cups with known capacities and high precision. Perform acid addition operations on these measuring cups using the acid addition device, set different acid addition amount set values, and repeat the acid addition [X] times for each set value. Weigh the measuring cups after acid addition using a high-precision electronic balance, calculate the actual acid addition amount based on the density of sulfuric acid, compare the actual acid addition amount with the set acid addition amount, calculate the error for each acid addition, and statistically analyze the average error and the error distribution range to evaluate the accuracy of the acid addition amount of the acid addition device.

[0038] Evaluating the accuracy of the acid addition amount of the acid addition device includes:

[0039] Set the acid addition amount to 200 ml and calculate the actual acid addition amount.

[0040] Given that the density of sulfuric acid is 1.84 g / cm3, the actual acid addition amounts for 5 times are 199.8 ml, 200.2 ml, 199.9 ml, 200.1 ml, and 200.0 ml respectively. The average error is (|199.8 - 200| + |200.2 - 200| + |199.9 - 200| + |200.1 - 200| + |200 - 200|) ÷ 5 ÷ 200 × 100% = 0.1%.

[0041] The accuracy of the flow sensor is 1 ml / min. Test the acid addition to the battery pack for 10 minutes, record the flow data, and calculate the speed fluctuation coefficient.

[0042] Specifically, set the acid addition speed gear to 50 ml / min, use a flow sensor with an accuracy of 1 ml / min, and perform acid addition to the battery pack in the transparent visible pipeline for 10 minutes. Record the flow data, draw a flow - time curve, and calculate the speed fluctuation coefficient. Assuming the maximum flow rate is 52 ml / min, the minimum flow rate is 48 ml / min, and the average flow rate is 50 ml / min, then the speed fluctuation coefficient = (52 - 48) ÷ 50 × 100% = 8%.

[0043] The temperature range in the environmental test chamber is -10°C - 50°C;

[0044] Specifically, in the environmental test chamber, repeat the acid addition amount accuracy and acid addition speed stability tests at 50°C, 25°C, and -10°C respectively. For example, at 50°C, the average error of the acid addition amount becomes 0.3%, and the speed fluctuation coefficient becomes 10%. Analyze the negative impact of temperature increase on the performance of the acid addition device.

[0045] The continuous working time of the acid addition device is 8 hours, and the acid addition amount and acid addition speed tests are performed every 2 hours;

[0046] Specifically, let the acid addition device work continuously for 8 hours, and measure the acid addition amount and acid addition speed every 2 hours. It is found that the error of the acid addition amount gradually increases after the 6th hour, from 0.1% to 0.5%. After timely inspection of the equipment, it is found that it is caused by slight blockage of the pipeline, providing a reference for production maintenance.

[0047] The battery packs in different initial states include: test battery packs that are completely dry, have a water content of 10% of the battery capacity, and have a water content of 20% of the battery capacity, and acid addition tests are carried out;

[0048] Specifically, prepare 3 groups of test battery packs that are completely dry, partially pre-wetted (with a water content of 10% of the battery capacity), and partially pre-wetted (with a water content of 20% of the battery capacity), and carry out acid addition tests. The results show that the error of the acid addition amount of the completely dry battery pack is relatively large, and the uniformity of the acid solution is poor, providing a basis for the pre-treatment of the battery before production.

[0049] The temperature influence test includes: placing the acid addition device and the test battery pack in an environmental test chamber to analyze the influence of temperature on the performance of the acid addition device;

[0050] The continuous operation test includes: continuously and uninterruptedly carrying out acid addition operations on a large number of test battery packs by the acid addition device, simulating long-term production conditions, recording the performance changes of the acid addition device during continuous operation, and evaluating its reliability during long-term operation;

[0051] The test of different initial states of the battery includes: preparing test battery packs in a completely dry and partially pre-wetted state, and under the same acid addition conditions, carrying out acid addition operations on battery packs in different initial states, testing the accuracy of the acid addition amount, the stability of the acid addition speed, and the uniformity of the acid solution, and analyzing the influence of the initial state of the battery on the acid addition effect.

[0052] The calculation of the speed fluctuation coefficient includes: recording the flow rate data, plotting the flow rate-time curve, setting the acid addition speed gear to 50 ml / min, the maximum flow rate to 52 ml / min, the minimum flow rate to 48 ml / min, and the average flow rate to 50 ml / min, then the speed fluctuation coefficient = (52 - 48) ÷ 50 × 100% = 8%.

[0053] Five micro-acidity sensors are arranged between the electrode plates of the test battery pack;

[0054] Specifically, arrange 5 micro-acidity sensors in the test battery pack, and measure the acid solution concentration after standing for 30 minutes after acid addition. The micro-acidity sensor usually works based on the electrochemical principle, and calculates the pH value by measuring the activity of hydrogen ions in the liquid. The sensor contains an electrode system inside. When the electrode contacts the liquid to be measured, a potential difference related to the acidity of the liquid will be generated, and the pH value of the liquid can be obtained by measuring this potential difference;

[0055] The micro acidity sensor is small in size, easy to carry and install, and can adapt to various complex environments and occasions. The sensor adopts advanced electrode materials and signal processing technologies, enabling high-precision measurement of acidity and alkalinity. The sensor can monitor the changes in the acidity and alkalinity of the liquid in real time and output corresponding electrical signals or digital signals for easy recording and analysis. The internal structure of the sensor is simple, not easily affected by the external environment, and has good stability.

[0056] Working principle: Set the acid addition amount value of the acid addition device, perform acid addition operations on multiple measuring cups respectively, and use an electronic balance to weigh the measuring cups after acid addition. Calculate the actual acid addition amount according to the density of sulfuric acid, compare the actual acid addition amount with the set acid addition amount to verify the accuracy of the acid addition amount of the acid addition device; For the acid addition device with accurate acid addition amount, add acid to the test battery pack. By setting different acid addition speed gears on the flow sensor of the acid addition device, continuously add acid for a period of time at each gear, and record the data changes of the flow sensor during the acid addition process to evaluate the stability of the acid addition speed; Arrange multiple micro acidity sensors between the electrode plates of the test battery pack. Use the acid addition device with stable acid addition speed to add acid to the test battery pack. After acid addition, let it stand for 30 minutes to measure the acid solution concentration. Measure the acid solution concentration at different positions through the acidity sensor, and calculate the standard deviation of the acid solution concentration at each position. The smaller the standard deviation, the more uniform the distribution of the acid solution inside the battery; Conduct simulated actual working condition tests on the acid addition device with accurate acid addition amount, stable acid addition speed and uniform acid addition. Re calibrate the acid addition device that does not meet the requirements. The simulated actual working condition tests include temperature influence tests, continuous working tests and tests on different initial states of the battery; Obtain a comprehensive and systematic evaluation of the test results of the acid addition device for the acid addition device that passes the simulated actual working condition tests.

[0057] In addition, when the above text creation unit, image generation unit, high-quality image training unit and model optimization processing unit are executed, they are also used to implement other functions of the above-mentioned test method for an acid addition device for industrial colloidal batteries, which will not be elaborated one by one here.

[0058] In addition, the present invention also provides a terminal device. In this embodiment, the test method for an acid addition device for industrial colloidal batteries mainly applies to the terminal device, and the terminal device can be a device with display and processing functions such as a PC, a portable computer, a mobile terminal, etc.

[0059] Specifically, the terminal device may include a processor (such as a CPU), a communication bus, a user interface, a network interface, and a memory. Among them, the communication bus is used to implement connection communication between these components; the user interface may include a display screen (Display) and an input unit such as a keyboard (Keyboard); the network interface may optionally include a standard wired interface and a wireless interface (such as a WI-FI interface); the memory may be a high-speed RAM memory or a stable memory (non-volatile memory), such as a disk memory, and the memory may optionally also be a storage device independent of the aforementioned processor.

[0060] Among them, a readable storage medium is stored in the memory, and an acid addition device test program is stored in the readable storage medium. The processor can call the acid addition device test program stored in the memory and execute the acid addition device test method for industrial colloidal batteries provided by the embodiments of the present invention.

[0061] It can be understood that the readable storage medium can be a tangible device that can hold and store instructions used by an instruction execution device. A computer-readable storage medium can be, for example, but not limited to, an electrical storage device, a magnetic storage device, an optical storage device, an electromagnetic storage device, a semiconductor storage device, or any suitable combination of the above. More specific examples (non-exhaustive list) of computer-readable storage media include: portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), static random access memory (SRAM), portable compact disk read-only memory (CD-ROM), digital versatile disk (DVD), memory sticks, floppy disks, mechanical encoding devices, such as punch cards or raised structures in grooves storing instructions thereon, and any suitable combination of the above. The computer-readable storage medium used herein is not construed as an instantaneous signal itself, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through a waveguide or other transmission medium (e.g., optical pulses through an optical fiber cable), or electrical signals transmitted through wires.

[0062] The computer-readable program instructions described herein can be downloaded from the computer-readable storage medium to various computing / processing devices, or downloaded to an external computer or external storage device through a network, such as the Internet, a local area network, a wide area network, and / or a wireless network. The network may include copper transmission cables, fiber optic transmissions, wireless transmissions, routers, firewalls, switches, gateway computers, and / or edge servers. The network adapter or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in the computer-readable storage medium in each computing / processing device.

[0063] Computer program instructions for performing the operations of the present disclosure may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-related instructions, microcode, firmware instructions, state-setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages such as Smalltalk, C++, etc., and conventional procedural programming languages such as the "C" language or similar programming languages. The computer-readable program instructions may be executed entirely on the user's computer, partially on the user's computer, executed as a stand-alone software package, partially on the user's computer and partially on a remote computer, or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., through the Internet using an Internet service provider). In some embodiments, by using the state information of the computer-readable program instructions to customize an electronic circuit, such as a programmable logic circuit, a field programmable gate array (FPGA), or a programmable logic array (PLA), the electronic circuit can execute the computer-readable program instructions to implement various aspects of the present disclosure.

[0064] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art may still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A testing method for an acid adding device used in an industrial colloidal battery, characterized in that, The steps include: Set the acid addition amount value of the acid addition device, perform acid addition operations on multiple measuring cups respectively, weigh the measuring cups after acid addition using an electronic balance, calculate the actual acid addition amount based on the density of sulfuric acid, compare the actual acid addition amount with the set acid addition amount, and verify the accuracy of the acid addition amount of the acid addition device; For the acid addition device with accurate acid addition amount, add acid to the test battery pack. By setting different acid addition speed gears on the flow sensor of the acid addition device, continuously add acid for a period of time at each gear, record the data changes of the flow sensor during the acid addition process, and evaluate the stability of the acid addition speed; Arrange multiple micro acidity sensors between the electrode plates of the test battery pack. Use the acid addition device with stable acid addition speed to add acid to the test battery pack. After acid addition, let it stand for 30 minutes and measure the acid solution concentration. Measure the acid solution concentration at different positions through the acidity sensors, calculate the standard deviation of the acid solution concentration at each position. The smaller the standard deviation, the more uniform the distribution of the acid solution inside the battery; Conduct simulated actual working condition tests on the acid addition device with accurate acid addition amount, stable acid addition speed and uniform acid addition. Re-calibrate the acid addition device that does not meet the requirements. The simulated actual working condition tests include temperature influence tests, continuous working tests and tests on different initial states of the battery; Comprehensively and systematically evaluate the test results of the acid addition device for the acid addition device that passes the simulated actual working condition tests.

2. The testing method of an acid adding device for an industrial colloidal battery according to claim 1, wherein: The acid addition operation includes: Set the acid addition amount set values to 100 ml, 200 ml, 300 ml, 400 ml, and 500 ml respectively, and add acid 5 times for each set value. The accuracy of the high-precision electronic balance is 0.01 g.

3. A testing method for an acid adding device for an industrial colloidal battery according to claim 2, characterized in that: The evaluation of the accuracy of the acid addition amount of the acid addition device includes: Set the acid addition amount to 200 ml and calculate the actual acid addition amount It is known that the density of sulfuric acid is 1.84 g / cm3. The 5 actual acid addition amounts are 199.8 ml, 200.2 ml, 199.9 ml, 200.1 ml, and 200.0 ml respectively. The average error is (|199.8 - 200| + |200.2 - 200| + |199.9 - 200| + |200.1 - 200| + |200 - 200|) ÷ 5 ÷ 200 × 100% = 0.1%.

4. A testing method for an acid adding device for an industrial colloidal battery according to claim 1, characterized in that: The accuracy of the flow sensor is 1 ml / min. Add acid to the test battery pack for 10 minutes, record the flow data, and calculate the speed fluctuation coefficient.

5. A testing method for an acid adding device for an industrial colloidal battery according to claim 1, characterized in that: The temperature range in the environmental test chamber is -10°C - 50°C.

6. The test method of an acid addition device for an industrial colloidal battery according to claim 1, characterized in that: The continuous working time of the acid addition device is 8 hours, and the acid addition amount and acid addition speed are tested every 2 hours.

7. A testing method for an acid adding device for an industrial colloidal battery according to claim 1, characterized in that: The battery packs with different initial states include: test battery packs that are completely dry, with a water content of 10% of the battery capacity and a water content of 20% of the battery capacity, and acid addition tests are carried out.

8. A testing method for an acid adding device for an industrial colloidal battery according to claim 1, characterized in that: The temperature influence test includes: placing the acid addition device and the test battery pack in the environmental test chamber and analyzing the influence of temperature on the performance of the acid addition device; The continuous working test includes: continuously and uninterruptedly performing acid addition operations on a large number of test battery packs by the acid addition device, simulating long-term production working conditions, recording the performance changes of the acid addition device during continuous working, and evaluating its reliability during long-term working; The tests for different initial states of the battery include: preparing test battery packs in a completely dry state and a partially pre-wetted state, and under the same acid addition conditions, performing acid addition operations on the battery packs with different initial states, testing the accuracy of the acid addition amount, the stability of the acid addition speed, and the uniformity of the acid solution, and analyzing the influence of the initial state of the battery on the acid addition effect.

9. A testing method for an acid adding device for industrial colloidal batteries according to claim 4, characterized in that: The calculation of the speed fluctuation coefficient includes: recording flow data, plotting a flow-time curve, setting the acid addition speed gear to 50 ml / min, with a maximum flow rate of 52 ml / min, a minimum flow rate of 48 ml / min, and an average flow rate of 50 ml / min. Then the speed fluctuation coefficient = (52 - 48) ÷ 50 × 100% = 8%.

10. A testing method for an acid adding device for an industrial colloidal battery according to claim 1, characterized in that: Five micro-acidity sensors are arranged between the electrode plates of the test battery pack.

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