Storage battery electrolyte holding test equipment and test method

Abstract

According to the storage battery electrolyte holding test equipment and test method provided by the invention, by adopting the method and combining the storage battery electrolyte holding test equipment, the use scene of the storage battery in a vehicle can be completely covered, and the defects that the existing storage battery test process is too simple, and the storage battery cannot be accurately and completely tested are overcome. An automatic control system is adopted, the vibration mode can be adjusted according to the preset frequency, manual intervention is reduced, the testing efficiency and precision are improved, the repeatability of storage battery testing can be improved, and the testing process is more accurate and complete.

Description

Technical Field

[0001] The invention relates to the technical field of lead-acid battery testing, and more particularly to battery electrolyte retention testing equipment and a testing method. Background Art

[0002] In the prior art, during the use of lead-acid batteries, charging will affect the liquid level of the electrolyte. The main reason is related to the chemical reactions that occur during the charging process and the temperature changes inside the battery: the charging process of lead-acid batteries is not just about storing electrical energy inside the battery, but actually involves an electrolytic reaction with the water in the electrolyte. During the charging process, oxygen inside the battery will be released from the positive electrode, and hydrogen will be released from the negative electrode to form bubbles. If the battery housing is not well sealed or the battery cover is not adequately designed to handle gas release, these gases may carry away the acid in the electrolyte, causing acid leakage, affecting the service life of the battery, or causing environmental pollution.

[0003] During the driving process of the vehicle, the lead-acid battery in the vehicle will be in a charging state for a long time. In addition, the battery will tilt due to bumps, ups and downs during the driving process, causing the electrolyte in the battery to leak from the exhaust hole on the top.

[0004] like Figure 1 As shown, the current method and device is to use a 45° detection fixture, install the battery on the fixture at an angle of 45° from the vertical position within 1 second, and keep it for 3 seconds, and then return the tilted position to the vertical position within 1 second, and visually observe whether the electrolyte splashes out. This battery detection method is too simple and cannot cover the operating conditions of the battery in the vehicle. It is difficult to measure whether the lead-acid battery will leak during actual use. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a battery electrolyte retention test device and a test method to overcome the shortcomings of the existing battery test equipment and test methods that are difficult to cover the usage scenarios of the battery.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: In the first aspect, a battery electrolyte retention test device comprises: a table frame; a detection platform for placing batteries; a driver for driving the platform to rotate to simulate vehicle vibration; a controller for controlling the driver to perform actions at a predetermined frequency; a limit assembly for controlling the rotation angle of the fixed assembly; the detection platform is rotationally connected to the table frame; the body of the driver is rotationally connected to the table frame; the driving end of the driver is rotationally connected to the detection platform; the controller is electrically connected to the driver; the limit assembly is movably arranged on the table frame; when the driving end of the driver is extended, the detection platform abuts against one end of the limit assembly; when the driving end of the driver is retracted, the detection platform abuts against the other end of the limit assembly.

[0007] In one embodiment, the detection platform includes: a support column and a positioning plate; one end of the support column is fixedly connected to the middle part of the positioning plate; the support column and the positioning plate are arranged perpendicular to each other; the middle part of the support column is rotatably connected to the platform frame; the driving end of the driver is rotatably connected to the side of the support column away from the positioning plate.

[0008] In one embodiment, the limit baffle assembly includes: a first limit baffle and a second limit baffle; the bottom of the first limit baffle and the bottom of the second limit baffle are respectively movably connected to the table frame; the first limit baffle and the second limit baffle are symmetrically arranged on both sides of the support column; when the driving end of the driver is extended, the other end of the support column abuts against the first limit baffle; when the driving end of the driver is retracted, the other end of the support column abuts against the second limit baffle.

[0009] In one embodiment, the driver includes: a first solenoid valve, a second solenoid valve and a cylinder; the first solenoid valve and the second solenoid valve are both electrically connected to the controller; the outer shell of the cylinder is rotatably connected to the table frame, and the driving end of the cylinder is rotatably connected to the side of the support column away from the positioning plate; the output end of the first solenoid valve is connected to the first air hole of the cylinder through an air pipe; the output end of the second solenoid valve is connected to the second air hole of the cylinder through an air pipe; when the first solenoid valve is turned on and the second solenoid valve is turned off, the driving end of the cylinder extends outward; when the first solenoid valve is turned off and the second solenoid valve is turned on, the driving end of the cylinder retracts inward; when both the first solenoid valve and the second solenoid valve are turned off, the support column is in a vertical state and the cylinder is in a horizontal state.

[0010] In a second aspect, a battery electrolyte retention test method is applied to a battery electrolyte retention test device as described in any one of the first aspects, and the method comprises: Fixing the battery on the testing platform; Based on a predetermined test strategy, adjusting the operating parameters of the driver using the controller; Control the driver to vibrate continuously for a first test time according to the working parameters; Rotating the battery by a predetermined angle; Control the driver to vibrate continuously for a second test time according to the working parameters; After stopping the driver, wipe the surface of the battery with reagent blotting paper to determine whether there is electrolyte leakage.

[0011] In one embodiment, the working parameters specifically include: a swing angle of the test platform, a swing frequency of the test platform, and a swing speed of the test platform.

[0012] In one embodiment, the swing angle of the test platform is: ; The swing frequency of the test platform is: times / minute; the swing speed of the test platform is: the time for moving from the first end to the second end is 0.2 seconds.

[0013] In one embodiment, before controlling the driver to vibrate continuously for a first test time according to the working parameter, the method further includes: The battery is connected with a power line to keep the battery in a charged state. The charging voltage of the battery is ; The charging current of the battery is less than or equal to times the rated charging current.

[0014] In one embodiment, before fixing the battery on the detection platform, the method further includes: placing the battery on the detection platform. The battery is left to stand for 24 hours in an environment; the battery is charged for 24 hours after being left to stand, and the charging voltage is , the maximum charging current is ,in, Indicates 20-hour rate discharge current; place the charged battery in Let stand in the environment for 24 hours.

[0015] In one embodiment, the predetermined angle is 90°; the first test time and the second test time are both 120 minutes.

[0016] In summary, the present invention has the following beneficial effects: the battery electrolyte retention test equipment and test method, using the method of the present invention, combined with the battery electrolyte retention test equipment of the present invention, can completely cover the use scenarios of the battery in the vehicle, and solve the shortcomings of the existing battery test process being too simple and unable to accurately and completely test the battery. The use of an automated control system can adjust the vibration mode according to a predetermined frequency, reduce manual intervention, improve test efficiency and accuracy, and can also improve the repeatability of battery testing, making the test process more accurate and complete. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of a battery detection method in the prior art; Figure 2 It is a schematic diagram of the overall structure of the battery electrolyte retention test equipment of the present invention; Figure 3 It is a schematic diagram of the three-dimensional structure of the first limit baffle of the present invention; Figure 4 It is a schematic diagram of the working principle of the driver of the present invention; Figure 5 It is a side view of the first limit baffle and the second limit baffle of the present invention; Figure 6 The circuit diagram of the controller of the present invention; Figure 7 It is a flow chart of the battery electrolyte retention test method of the present invention; In the figure, 1, platform frame; 21, support column; 22, positioning plate; 23, fixing pressure strip; 24, limiting screw; 25, limiting nut; 31, first solenoid valve; 32, second solenoid valve; 33, cylinder; 34, gas tank; 4, controller; 511, first bottom plate; 512, first side plate; 513, first buffer block; 514, first slide groove; 515, first limiting bolt; 521, second bottom plate; 522, second side plate; 523, second buffer block. DETAILED DESCRIPTION

[0018] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings. Several embodiments of the present invention are shown in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein.

[0019] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments.

[0020] Embodiment 1 In order to solve the above problems, the present invention provides a battery electrolyte retention test device, such as Figure 2-Figure 6 As shown, including: Table frame 1; Testing platform for placing batteries; A driver, used to drive the platform to rotate to simulate vehicle vibration; Controller 4, used to control the driver to perform actions according to a predetermined frequency; A limit assembly, used to control the rotation angle of the fixed assembly; The detection platform is rotatably connected to the platform frame 1; the body of the driver is rotatably connected to the platform frame 1; the driving end of the driver is rotatably connected to the detection platform; the controller 4 is electrically connected to the driver; the limit assembly is movably arranged on the platform frame 1; When the driving end of the driver is extended, the detection platform abuts against one end of the limit assembly; when the driving end of the driver is retracted, the detection platform abuts against the other end of the limit assembly.

[0021] In practical applications, the platform frame 1 is used to carry the entire battery detection equipment, and the detection platform is used to place the battery. After the battery is placed, the driver is used to drive the detection platform to move back and forth to drive the battery on the detection platform to shake, so as to simulate the vibration, acceleration and deceleration, ups and downs, and left and right tilt of the vehicle during actual operation. The controller 4 is used to control the driver to move according to a pre-set program so that the driver can vibrate at a predetermined frequency. The limit assembly is used to adjust the rotation angle of the driver. By adjusting the position of the limit assembly, the rotation angle of the detection platform can be controlled accordingly, and then the rotation angle and movement distance of the battery can be adjusted. In summary, the driver in this application can drive the detection platform to rotate at a predetermined frequency, thereby simulating the vibration generated by the vehicle during actual operation. Through this simulation, the use state of the battery in the vehicle vibration environment can be accurately reproduced to verify its electrolyte retention capacity. This test method makes up for the shortcomings of traditional static detection and makes the test results more authentic and reliable. The controller 4 is electrically connected to the driver and can automatically control the rotation of the detection platform according to a predetermined frequency and program. This automated design avoids manual intervention, which not only reduces the difficulty of operation but also improves test efficiency and accuracy.

[0022] In one embodiment, the detection platform includes: a support column 21 and a positioning plate 22; one end of the support column 21 is fixedly connected to the middle of the positioning plate 22; the support column 21 and the positioning plate 22 are arranged perpendicular to each other; the middle of the support column 21 is rotatably connected to the platform frame 1; the driving end of the driver is rotatably connected to the side of the support column 21 away from the positioning plate 22.

[0023] In actual applications, the middle part of the support column 21 is rotatably connected to the platform frame 1 to ensure smooth rotation of the detection platform, effectively reduce shaking and deviation during operation, and improve the overall structural stability of the equipment; the support column 21 is fixedly connected to the positioning plate 22, and the two are arranged perpendicular to each other, so that the detection platform has good anti-overturning ability when subjected to the rotational force applied by the driver, and the driving end of the driver is rotatably connected to the far end of the support column 21, so that the power of the driver can be more effectively transmitted to the detection platform. The connection method of the support column 21 and the positioning plate 22 provides a strong supporting force when the detection platform carries a battery, which can meet the load requirements of batteries of larger weight or different specifications.

[0024] In one embodiment, the detection platform also includes: a fixed pressure strip 23 for pressing the battery, two limit screws 24 and two limit nuts 25; the two limit screws 24 are respectively arranged on both sides of the positioning plate 22, and the arrangement direction of the two limit screws 24 is consistent with the swing direction of the detection platform; the two limit screws 24 are arranged perpendicular to the positioning plate 22; through grooves are respectively provided at both ends of the fixed pressure strip 23; the two limit screws 24 pass through the two through grooves respectively; the fixed pressure strip 23 is slidably arranged on the limit screw 24; the two limit nuts 25 are respectively threadedly connected with the two limit screws 24 one by one, and are used to limit the fixed pressure strip 23 in the vertical direction.

[0025] In actual applications, the design of the fixed pressure strip 23 can apply pressure to the battery during the test and press it firmly on the detection platform, thereby effectively preventing the battery from sliding, tilting or shifting when the driving platform rotates. This is particularly important in dynamic tests that simulate vehicle vibrations, ensuring the consistency of test conditions and preventing the accuracy of test results from being affected by changes in battery position. The combination of the limit screw 24 and the limit nut 25 enables the fixed pressure strip 23 to be slidably adjusted along the direction of the limit screw 24 to accommodate batteries of different sizes and specifications. A through groove is provided on the fixed pressure strip 23, so that it can smoothly pass through the limit screw 24 and slide and adjust. Installation or adjustment can be completed without removing the limit screw 24, greatly improving the convenience and efficiency of operation.

[0026] In one embodiment, the limiting assembly includes: a first limiting baffle and a second limiting baffle; The bottom of the first limit baffle plate and the bottom of the second limit baffle plate are movably connected to the platform frame 1 respectively; The first limit baffle and the second limit baffle are symmetrically arranged on both sides of the support column 21; When the driving end of the driver is extended, the other end of the support column 21 abuts against the first limit baffle; when the driving end of the driver is retracted, the other end of the support column 21 abuts against the second limit baffle.

[0027] In practical applications, by designing the first limit baffle and the second limit baffle, the device can limit the swing of the detection platform in two directions through the two baffles when the driver drives the platform to rotate.

[0028] This design can effectively control the swing angle of the test platform, prevent excessive swing from affecting the accuracy of the experiment, and further improve the safety and stability of the equipment operation. The two limit baffles cooperate with the extension and retraction actions of the drive end of the driver respectively. The test platform can abut against the corresponding baffles in different working conditions to achieve precise control of the swing range. The controllability of this swing range can meet the needs of different test conditions, such as adjusting the swing angle according to different vehicle vibration modes, thereby improving the applicability of the equipment.

[0029] In one embodiment, the first limiting baffle includes: a first bottom plate 511, a first side plate 512 and at least one first limiting bolt 515; the second limiting baffle includes: a second bottom plate 521, a second side plate 522 and at least one second limiting bolt; The bottom end of the first side plate 512 is fixedly connected to one end of the first bottom plate 511; a first slide groove 514 is provided on the first bottom plate 511; the first limiting bolt 515 passes through the first slide groove 514 and is fixedly connected to the platform frame 1; The bottom end of the second side plate 522 is fixedly connected to one end of the second bottom plate 521 ; a second slide slot is provided on the second bottom plate 521 ; and the second limiting bolt passes through the second slide slot and is fixedly connected to the platform frame 1 .

[0030] In practical applications, the distance between the first side plate 512 and the second side plate 522 is adjusted by sliding on the limit bolt through the slide groove, wherein when the first limit bolt 515 is loosened, the friction between the first limit bolt 515 and the first bottom plate 511 is reduced, and the first bottom plate 511 can be smoothly moved to adjust the position of the first side plate 512. When the position of the first side plate 512 is adjusted to the right position, the first limit bolt 515 is tightened, and the friction between the first limit bolt 515 and the first bottom plate 511 can be used to fix the first side plate 512. The use principle of the second limit bolt and the second bottom plate 521 is the same as that of the first bottom plate 511.

[0031] In one embodiment, the first limit baffle includes two first limit bolts 515; the second limit baffle includes two second limit bolts; the arrangement direction of the two first limit bolts 515 is the same as the movement direction of the cylinder 33, and the distance between the two first limit bolts 515 is less than or equal to half the length of the first slide groove 514; the arrangement direction of the two second limit bolts is the same as the movement direction of the cylinder 33, and the distance between the two second limit bolts is less than or equal to half the length of the second slide groove.

[0032] This design can ensure that the limiting capacity of the baffle can effectively cope with the force generated when the cylinder 33 drives the platform to move, especially the impact force along the movement direction of the cylinder 33. The limiting bolt provides a more uniform force distribution, improves the stability and durability of the limiting structure, and the combination of the bolt and the slide groove allows the user to flexibly adjust the specific limiting range of the limiting baffle by adjusting the position of the bolt in the slide groove to meet the requirements of the platform swing angle under different test conditions.

[0033] In one embodiment, the first side plate 512 and the second side plate 522 are both inclined, and the angle between the first side plate 512 and the second side plate 522 is .

[0034] In practical applications, in order to simulate the driving environment of the vehicle, generally speaking, the vehicle's driving inclination angle will not exceed 15°, so limiting the angle between the two side panels to 30° can better match the battery's use environment.

[0035] In one embodiment, the limiting assembly further includes: a first buffer block 513 and a second buffer block 523 ; the first buffer block 513 is disposed on the surface of the first side plate 512 facing the second side plate 522 ; the second buffer block 523 is disposed on the surface of the second side plate 522 facing the first side plate 512 .

[0036] In actual applications, when the detection platform swings and contacts the limit baffle, the buffer block can absorb part of the impact force and reduce the force directly transmitted to the limit baffle and other components, thereby reducing the stress concentration phenomenon of the limit assembly and the platform frame 1. The impact resistance of the equipment in high-frequency vibration or large-amplitude swing environments is improved, and key components of the equipment are protected from damage. When the detection platform swings to the extreme position, the elastic material of the buffer block can reduce the direct collision between the detection platform and the limit baffle and reduce the noise generated by the collision. In the present application, the buffer block can be made of rubber material or soft sponge pad material.

[0037] In one embodiment, the driver includes: a first solenoid valve 31, a second solenoid valve 32 and a cylinder 33; The first solenoid valve 31 and the second solenoid valve 32 are both electrically connected to the controller 4; the housing of the cylinder 33 is rotatably connected to the platform frame 1, and the driving end of the cylinder 33 is rotatably connected to the side of the support column 21 away from the positioning plate 22; The output end of the first solenoid valve 31 is connected to the first vent hole of the cylinder 33 through the air supply pipe; the output end of the second solenoid valve 32 is connected to the second vent hole of the cylinder 33 through the air supply pipe; When the first solenoid valve 31 is turned on and the second solenoid valve 32 is turned off, the driving end of the cylinder 33 extends outward; when the first solenoid valve 31 is turned off and the second solenoid valve 32 is turned on, the driving end of the cylinder 33 retracts inward; When the first solenoid valve 31 and the second solenoid valve 32 are both turned off, the support column 21 is in a vertical state, and the cylinder 33 is in a horizontal state.

[0038] In practical applications, the cylinder 33 is used as the core component of the driver to achieve rapid telescopic action. Compared with traditional mechanical transmission, the cylinder 33 has a faster response speed and can meet the needs of high-frequency vibration simulation testing. The linkage control of the solenoid valve and the cylinder 33 can achieve rapid start and stop, improving the efficiency of the test process. The first solenoid valve 31 and the second solenoid valve 32 respectively control the two vents of the cylinder 33, which can accurately adjust the telescopic action of the cylinder 33 to ensure that the swing amplitude and frequency of the detection platform meet the test requirements.

[0039] In one embodiment, Figure 6 As shown, the controller 4 includes: a single chip microcomputer U1, a first transistor Q1 and a second transistor Q2; The first output terminal of the single chip computer U1 is electrically connected to the base of the first transistor Q1; The second output terminal of the single chip computer U1 is electrically connected to the base of the second transistor Q2; The positive electrode of the first solenoid valve 31 and the positive electrode of the second solenoid valve 32 are both electrically connected to the power supply voltage terminal; The cathode of the first solenoid valve 31 is electrically connected to the collector of the first transistor; The cathode of the second solenoid valve 32 is electrically connected to the collector of the second transistor; The emitter of the first transistor and the emitter of the second transistor are both grounded.

[0040] In practical applications, the single-chip microcomputer uses a chip of model STC89C52RC, in which two pins of the single-chip microcomputer are connected to two transistors through a current-limiting resistor. When the pin outputs a high level, the transistor is turned on, the base and emitter of the transistor are turned on, and the solenoid valve is in an open state, and the gas tank 34 can transmit high-pressure gas to the cylinder 33; when the pin outputs a low level, the transistor is turned off, the base and emitter of the transistor are turned off, and the solenoid valve is in a closed state, and the connection between the gas tank 34 and the cylinder 33 is cut off. Therefore, by controlling the switches of the two solenoid valves, the cylinder 33 can be controlled to extend or retract accordingly. The program burned in the single-chip microcomputer is used to control the two pins of the single-chip microcomputer to output high and low levels respectively, so as to control the cylinder to extend outward or retract inward. Using the single-chip microcomputer to execute a predetermined program to output a high level or a low level at a predetermined pin belongs to a known technology of those skilled in the art, so in this application, the process of how to burn the program and how to execute the program will not be repeated.

[0041] Embodiment 2 See also Figure 7 , a battery electrolyte retention test method, applied to any one of the battery electrolyte retention test equipment in embodiment 1, the method comprising: S1. Place the battery in an environment of 25℃ ± 2℃ and let it stand for 24 hours. Charge the battery for 24 hours with a charging voltage of 16.0V ± 0.1V and a maximum charging current of I max =5I 20 , where I 20 Indicates 20-hour rate discharge current; place the charged battery in a 50℃ ± 2℃ environment for 24 hours; Specifically, placing the battery in an environment of 25℃ ± 2℃ for 24 hours can help simulate the performance of the battery in a normal temperature environment and keep the battery in a stable state. Placing the battery for 24 hours after charging can make the bubbles attached to the plates dissipate when the battery is fully charged, so that there are no tiny bubbles in the electrolyte, so that each tested battery is in the same state, and the repeatability of the test process and test results is maintained. Subsequently, temperature control during storage (50℃ ± 2℃) can simulate the storage of batteries in a high temperature environment. Through precise temperature control, the performance and stability of the battery at different ambient temperatures can be better evaluated. The resting and charging time of each stage is precisely controlled (such as resting for 24 hours and charging for 24 hours) to ensure the standardization and repeatability of the test. This method helps to reduce errors caused by human operation and ensure the consistency of test results; and through this step process, the stability and safety of the battery under long-term charging and high temperature environment can be effectively detected. Especially during the high-temperature testing phase, early detection of problems such as internal chemical reactions in the battery and thermal runaway that may occur when the temperature is too high will help ensure that the battery can operate stably in various environments and reduce safety hazards such as overheating and leakage.

[0042] S2. Fix the battery on the testing platform; Specifically, the battery is placed on the test platform, and the battery needs to be pressed against the positioning plate 22 by a fixing pressure strip 23 to prevent the battery from shifting during the test, thereby affecting the test accuracy of the battery.

[0043] S3. Based on a predetermined test strategy, the controller is used to adjust the working parameters of the driver; the working parameters specifically include: the swing angle of the test platform, the swing frequency of the test platform, and the swing speed of the test platform; the swing angle of the test platform is: 30° ± 5°; the swing frequency of the test platform is: 12 ± 2 times / minute; the swing speed of the test platform is: the time for moving from the first end to the second end is 0.2 seconds; By precisely adjusting the operating parameters of the driver through the controller, it can be ensured that the swing angle, frequency and speed of the test platform can meet the predetermined standards. This greatly improves the controllability and repeatability of the test process and can eliminate the influence of external environment or human factors on the test results. By controlling the swing parameters of the platform, the mechanical stability of the battery can be strictly evaluated to ensure that there will be no battery leakage, short circuit or performance degradation in a vibrating environment. Especially for batteries in the fields of automobiles, power tools, aviation, etc., mechanical vibration is a common working environment, and the reliability of the battery under these conditions must be ensured. The tilt amplitude of the test platform is between 30° ± 5°, the purpose is to simulate the vibration and swing that may occur during vehicle driving. During the driving process of the vehicle, especially when passing through uneven roads or bumpy sections, the vibration angle of the vehicle body may reach this range. The swing frequency is between 12 ± 2 times / minute, the purpose is also to simulate the vibration cycle of the vehicle, and the vibration frequency when the vehicle encounters uneven roads or obstacles during driving is close. The swing speed is related to the acceleration change of the vehicle during movement. Especially in the case of sudden braking or acceleration of the vehicle, the battery will be subjected to rapid impact force. The speed set in this step can simulate the performance of the battery when it experiences rapid acceleration, deceleration or vehicle vibration. The 0.2 second speed can simulate the instantaneous impact on the battery when the vehicle accelerates suddenly, and evaluate the stability of the electrolyte in the battery under dynamic pressure.

[0044] S4. Connect the battery with a power cord to keep it charged. The battery charging voltage is 14.8V ±0.05V; the battery charging current is less than or equal to times the rated charging current; Since the vehicle will continue to charge the battery while driving, and bubbles will be generated inside the battery during charging, causing the bubbles to squeeze the electrolyte out of the pressure relief hole during the escape process, in order to avoid electrolyte leakage during vehicle driving, it is necessary to simulate the vehicle to charge the battery during testing. The specific charging conditions are to charge the battery at a constant voltage. When the battery voltage is lower than 14.8V, the charging current is large. When the battery voltage is close to 14.8V, the charging current will gradually decrease, and the charging current of the battery will be adjusted dynamically to maintain the battery voltage at around 14.8V. When the battery voltage is low, the maximum charging current of the battery is limited to 10 times the rated charging current to quickly charge the battery. When the battery voltage rises, the charging current will gradually drop to avoid overcharging of the battery due to long-term high current.

[0045] S5, controlling the driver to vibrate continuously for a first test time according to the working parameters; the first test time is 120 minutes; In actual work, the battery may be subjected to long-term vibration or shock in vehicles, machinery or other applications, so this test time can better reflect the long-term durability of the battery in the real environment. Since the battery is not only subjected to short-term vibration shock in actual applications, a long-term vibration test can more comprehensively evaluate the performance of the battery in a vibration environment and avoid over-idealization of the test results. By increasing the test time, the test is closer to the actual use environment, which improves the scientificity and credibility of the test results. This not only helps to detect the long-term stability and durability of the battery, but also can detect potential fault problems early and improve the safety and reliability of the battery.

[0046] S6, rotating the battery to a predetermined angle; the predetermined angle is 90°; In actual use, the battery is not always at a fixed angle, especially in applications such as vehicles and electric equipment, the battery may experience various angles of tilt and rotation as the vehicle travels. By rotating the battery 90°, the angle changes that may occur in the actual application of the battery can be simulated. This test can ensure that the performance of the battery at different angles will not be significantly affected by changes in physical position. It can check whether the battery is prone to electrolyte leakage or internal structural damage at different angles. During the normal use of the battery, tilting, rotation and other actions may cause the movement of electrolyte or gas, so testing different angles can help detect the battery's sealing in all directions and the stability of the internal structure, ensuring that the battery will not leak due to angle changes. By rotating the battery 90°, the test covers the performance of the battery in different directions, which can help find problems that only appear at specific angles.

[0047] S7, control the driver to vibrate continuously for a second test time according to the working parameters; the first test time is 120 minutes; S8. After stopping the driver, wipe the surface of the battery with reagent blotting paper to determine whether there is electrolyte leakage.

[0048] Reagent blotter is a highly sensitive detection tool that can detect tiny traces of electrolyte leakage on the surface of the battery. By wiping the surface of the battery and using the reagent reaction, it is possible to detect whether there is any sign of electrolyte leakage. This method is more accurate and reliable than relying solely on visual inspection, and can effectively avoid missed detection. Through wiping and reagent reaction, leak detection can be performed without damaging the battery itself. This non-destructive testing method can ensure that the battery itself will not be damaged or affected by the test process, and is particularly suitable for scenarios that are sensitive to the long service life or performance of the battery; the reagent blotter wiping test method does not require complex equipment or high-cost instruments, is simple to operate, and is suitable for quality control in large-scale production processes. It has good adaptability to different types of batteries and production environments of different sizes, making this step highly practical and operable in the production line.

[0049] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. Battery electrolyte retention test equipment, characterized in that, include: Platform frame; Testing platform for placing batteries; A driver, used for driving the platform to rotate to simulate vehicle vibration; A controller, used to control the driver to perform an action at a predetermined frequency; A limiting component, used to control the rotation angle of the fixing component; The detection platform is rotatably connected to the platform frame; the body of the driver is rotatably connected to the platform frame; the driving end of the driver is rotatably connected to the detection platform; The controller is electrically connected to the driver; the limit assembly is movably arranged on the platform frame; When the driving end of the driver is extended, the detection platform abuts against one end of the limit assembly; when the driving end of the driver is retracted, the detection platform abuts against the other end of the limit assembly.

2. The battery electrolyte retention test equipment according to claim 1, characterized in that: The detection platform comprises: Support columns and positioning plates; One end of the support column is fixedly connected to the middle of the positioning plate; the support column and the positioning plate are arranged perpendicular to each other; The middle part of the support column is rotatably connected to the platform frame; The driving end of the driver is rotatably connected to a side of the support column away from the positioning plate.

3. The battery electrolyte retention test equipment according to claim 1, characterized in that: The limiting assembly comprises: a first limiting baffle and a second limiting baffle; The bottom of the first limit baffle plate and the bottom of the second limit baffle plate are respectively movably connected to the platform frame; The first limit baffle and the second limit baffle are symmetrically arranged on both sides of the support column; When the driving end of the driver is extended, the other end of the support column abuts against the first limit baffle; when the driving end of the driver is retracted, the other end of the support column abuts against the second limit baffle.

4. The battery electrolyte retention test method according to claim 1, characterized in that: The driver comprises: a first solenoid valve, a second solenoid valve and a cylinder; The first solenoid valve and the second solenoid valve are both electrically connected to the controller; the outer shell of the cylinder is rotatably connected to the table frame, and the driving end of the cylinder is rotatably connected to the side of the support column away from the positioning plate; The output end of the first solenoid valve is connected to the first air vent of the cylinder through the air supply pipe; the output end of the second solenoid valve is connected to the second air vent of the cylinder through the air supply pipe; When the first solenoid valve is turned on and the second solenoid valve is turned off, the driving end of the cylinder extends outward; when the first solenoid valve is turned off and the second solenoid valve is turned on, the driving end of the cylinder retracts inward; When the first solenoid valve and the second solenoid valve are both turned off, the support column is in a vertical state, and the cylinder is in a horizontal state.

5. Battery electrolyte retention test method, characterized in that: Applied to the battery electrolyte retention test device as claimed in any one of claims 1 to 4, the method comprising: Fixing the battery on the testing platform; Based on a predetermined test strategy, adjusting the operating parameters of the driver using the controller; Control the driver to vibrate continuously for a first test time according to the working parameters; Rotating the battery by a predetermined angle; Control the driver to vibrate continuously for a second test time according to the working parameters; After stopping the driver, wipe the surface of the battery with reagent blotting paper to determine whether there is electrolyte leakage.

6. The battery electrolyte retention test method according to claim 5, characterized in that: The working parameters specifically include: The swing angle of the test platform, the swing frequency of the test platform and the swing speed of the test platform.

7. The battery electrolyte retention test method according to claim 6, characterized in that: The swing angle of the test platform is: ; The oscillation frequency of the test platform is: times / minute; The swing speed of the test platform is: the time for moving from the first end to the second end is 0.2 seconds.

8. The battery electrolyte retention test method according to claim 5, characterized in that: Before controlling the driver to vibrate continuously for a first test time according to the working parameter, the method further includes: The battery is connected with a power line to keep the battery in a charged state. The charging voltage of the battery is ; The charging current of the battery is less than or equal to times the rated charging current.

9. The battery electrolyte retention test method according to claim 5, characterized in that: Before the battery is fixed on the detection platform, the method further includes: Place the battery in Leave it in an environment for 24 hours; The static battery is charged for 24 hours, and the charging voltage is , the maximum charging current is ,in, Indicates 20 hour rate discharge current; Place the charged battery in Let stand in the environment for 24 hours.

10. The battery electrolyte retention test method according to claim 5, characterized in that: The predetermined angle is 90°; the first test time and the second test time are both 120 minutes.

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