Rapid capacity detection device and method for lead-acid storage battery

Abstract

The invention belongs to the technical field of capacity detection of lead-acid storage batteries, and particularly provides a rapid capacity detection device and method for a lead-acid storage battery, and the device comprises a testing machine, a testing table is installed in the testing machine, a tested battery is placed in the testing table, and a testing assembly is installed at the top of the testing table and comprises an air cylinder. The cylinder drives the pushing plate to move up and down, the sliding rod is slidably installed on the top plate of the test bench, the bottom pushing plate is installed at the lower end of the sliding rod, the pushing plate is installed at the upper end of the sliding rod, and the first magnetic isolation sleeve and the second magnetic isolation sleeve are installed on the bottom pushing plate. And the conductive copper sheets in the magnetic shield I and the magnetic shield II are connected with the positive and negative electrodes on the tested battery so as to communicate the tested battery. According to the invention, reasons of voltage drop or battery heating and other problems can be directly analyzed, and the problem analysis efficiency of equipment is improved.

Description

Technical Field

[0001] This invention belongs to the field of lead-acid battery capacity testing technology, specifically, it relates to a device and method for rapid capacity testing of lead-acid batteries. Background Technology

[0002] Lead-acid batteries are widely used in many industrial and daily life applications, such as electric vehicles, motorcycles, and communication base stations. Traditional lead-acid battery testing methods mainly rely on long-term discharge tests, which are time-consuming, costly, and pollute the environment. Current technology uses specialized instruments to replace traditional testing methods.

[0003] A battery tester is an instrument specifically designed for lead-acid batteries. It typically utilizes multiple testing principles, such as measuring battery voltage, internal resistance, and charge / discharge characteristics, combined with built-in algorithms and standard curves, to quickly and accurately determine the battery's capacity and health status. How to use the tester: Connect the battery tester to the positive and negative terminals of the battery. Follow the on-screen instructions, such as selecting the battery type, rated voltage, and capacity, and then start the testing program. The instrument will automatically complete the tests and display information such as the battery's capacity, internal resistance, and health status.

[0004] If a sudden drop in voltage or battery overheating occurs during testing, the main causes are twofold: First, a problem with the connection between the battery and the tester, such as excessive contact resistance leading to localized overheating and inaccurate voltage measurements; second, an internal battery problem, such as an internal short circuit or severe sulfation of the electrode plates. Current testing instruments require individual analysis of each cause when these problems occur, which is inefficient and time-consuming. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a device and method for rapid capacity detection of lead-acid batteries, which can not only perform lead-acid battery testing, but also directly analyze the reasons for voltage drop or battery overheating.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a rapid capacity testing device for lead-acid batteries, including a testing machine, a testing platform installed inside the testing machine, a battery to be tested placed inside the testing platform, a testing component installed on the top of the testing platform, the testing component including a cylinder, the cylinder driving a push plate to move up and down, a slide rod slidably installed on the top plate of the testing platform, a bottom push plate installed at the lower end of the slide rod, a push plate installed at the upper end, a magnetic shielding sleeve one and a magnetic shielding sleeve two installed on the bottom push plate, the bottom push plate moving downwards, connecting the conductive copper sheets inside the magnetic shielding sleeve one and the magnetic shielding sleeve two to the positive and negative electrodes on the battery to be tested, thus connecting the battery to the test.

[0007] In a preferred embodiment, the positive and negative electrodes include a first copper post and a second copper post.

[0008] In a preferred embodiment, a groove is formed between the first copper guide post and the second copper guide post, and insulating strips are installed on the inner walls of the first and second magnetic shielding sleeves. The insulating strips are attached to the outer walls of the positive and negative electrodes, and the insulating strips cooperate with the groove.

[0009] In a preferred embodiment, a pressure reducing switch and an emergency power switch that can move up and down are respectively installed inside the first and second magnetic shielding sleeves. The pressure reducing switch is electrically connected to the voltage regulator of the testing machine, and the emergency power switch is used to measure the continuity of the circuit.

[0010] In a preferred embodiment, a guide sleeve is fixedly installed on the bottom push plate, a driven inclined block is installed on the top of both the pressure reducing switch and the emergency power switch, and a spring is installed on the bottom of both. A guide rod is slidably installed inside the guide sleeve, and an active inclined block is installed at both ends of the guide rod. The active inclined block at one end of the guide rod cooperates with the driven inclined block on the top of the pressure reducing switch, and the active inclined block at the other end of the guide rod cooperates with the driven inclined block on the top of the emergency power switch.

[0011] In a preferred embodiment, the guide rod is provided with an adsorption magnetic block in the middle, and electromagnetic chuck one and electromagnetic chuck two are respectively installed on the inner sidewalls of both ends of the guide sleeve. When electromagnetic chuck one is energized, electromagnetic chuck one adsorbs the magnetic block. When electromagnetic chuck two is energized, electromagnetic chuck two adsorbs the magnetic block. Electromagnetic chuck one and electromagnetic chuck two cannot be energized at the same time.

[0012] In a preferred embodiment, the first electromagnetic chuck is located at one end of the guide sleeve near the pressure reducing switch, and the second electromagnetic chuck is located at the other end.

[0013] In a preferred embodiment, the cylinder output end is connected to an active push plate, a magnetic suction plate is installed on the active push plate, and an electromagnet is installed at the bottom of the push plate. The electromagnet is used to attract the magnetic suction plate.

[0014] In a preferred embodiment, the bottom push plate is connected to the top plate of the test bench via a return spring.

[0015] In a preferred embodiment, the testing machine is equipped with a door, heat sinks are installed on the side wall of the testing machine, and a main control unit is installed on the testing machine.

[0016] In a preferred embodiment, a handle is installed on the testing machine, and wheels are installed at the bottom of the testing machine.

[0017] In a preferred embodiment, a plastic shell is installed on the top of the battery under test, the plastic shell surrounds the positive and negative electrodes, and a gap is provided between the positive and negative electrodes and the plastic shell for inserting magnetic shielding sleeve one and magnetic shielding sleeve two.

[0018] The present invention also provides a testing method for a rapid capacity testing device for lead-acid batteries. The positive and negative electrodes include a first copper guide post and a second copper guide post. A groove is formed between the first copper guide post and the second copper guide post. Insulating strips are installed on the inner walls of the first and second magnetic shielding sleeves. The insulating strips are attached to the outer walls of the positive and negative electrodes and cooperate with the groove. The output end of the cylinder is connected to an active push plate. A magnetic suction plate is installed on the active push plate. An electromagnet is installed at the bottom of the top push plate. The electromagnet is used to attract the magnetic suction plate. The bottom push plate is connected to the top plate of the test platform through a return spring. Includes the following steps: Step 1: Place the battery to be tested in the test stage inside the test machine, so that the positive and negative electrodes on the top of the battery correspond to the positions of the magnetic shielding sleeve 1 and magnetic shielding sleeve 2 of the test assembly, respectively. Step 2: The electromagnet at the bottom of the push plate is energized, causing the electromagnet to attract the magnetic plate. The cylinder is activated, and the cylinder drives the active push plate, the push plate and the bottom push plate to move down synchronously. The bottom push plate drives the magnetic shielding sleeve 1 and magnetic shielding sleeve 2 to be fitted outside the positive and negative electrodes. The conductive copper sheet inside the magnetic shielding sleeve 1 and magnetic shielding sleeve 2 is connected to the first copper guide post. The reset spring connected to the bottom push plate is stretched. Step 3: The testing machine measures the voltage, internal resistance, and charge / discharge characteristic parameters of the battery under test. During the test, the magnetic shielding sleeve 1 and magnetic shielding sleeve 2 isolate the external magnetic field from interfering with the connection between the conductive copper sheet and the positive and negative electrodes. Abnormal Judgment and Handling: If a voltage drop or overheating of the tested battery occurs during the test, restart the cylinder to move the bottom push plate downwards, so that the conductive copper sheet gradually connects with the second copper guide post to increase the contact area and reduce the contact resistance. If the measured voltage rises significantly and the overheating of the tested battery is relieved, the problem is determined to be caused by the connection between the tested battery and the test component. Once the electromagnetic chuck is energized, it attracts the magnetic block in the middle of the guide rod, moving the guide rod towards the pressure reducing switch. The active inclined block at one end of the guide rod cooperates with the driven inclined block at the top of the pressure reducing switch, causing the pressure reducing switch to move down below the emergency power switch. As the bottom push plate continues to move downwards, the positive and negative electrodes press the pressure reducing switch, and the voltage of the measuring circuit is slowly reduced to zero through the voltage regulator of the test machine, and the test is stopped smoothly. If the measured voltage continues to drop or drops slowly and the tested battery is still overheating, the problem is determined to be caused by the inside of the tested battery. Power is applied to the electromagnetic chuck two at the end of the guide sleeve away from the pressure reducing switch. The electromagnetic chuck two attracts the magnetic block, which moves the guide rod towards the emergency power switch. The active inclined block at the other end of the guide rod cooperates with the driven inclined block at the top of the emergency power switch, causing the emergency power switch to move down below the pressure reducing switch. As the bottom push plate continues to move down, the positive and negative electrodes press the emergency power switch, directly disconnecting the power supply to the measuring circuit.

[0019] In the preferred embodiment, in step three, if a short circuit occurs in the measurement circuit, the power to the disk drive connected to the measurement circuit is cut off, and the reset spring rebounds, causing the bottom push plate, magnetic shielding sleeve one, and magnetic shielding sleeve two to reset, thus disconnecting the test component from the battery under test.

[0020] The present invention provides a device and method for rapid capacity testing of lead-acid batteries, which has the following beneficial effects: 1. Compared to the inefficient approach of traditional testing equipment that requires troubleshooting each cause when abnormalities such as voltage drop or battery overheating occur, this device can directly distinguish whether the abnormality is caused by excessive contact resistance at the connection point between the tested battery and the test component or by internal factors of the battery itself, by increasing the contact area between the conductive copper sheet and the positive and negative electrodes through comparative testing. No additional disassembly or auxiliary testing is required, which greatly shortens the problem analysis time and improves the efficiency of testing and troubleshooting.

[0021] 2. The design of the magnetic shielding sleeve 1 and magnetic shielding sleeve 2 in the test assembly can effectively isolate the interference of external magnetic fields on the connection between the conductive copper sheet and the positive and negative electrodes, and avoid the magnetic field affecting the measurement results of parameters such as voltage and internal resistance. At the same time, the insulating strip on the inner wall of the magnetic shielding sleeve fits precisely with the grooves of the positive and negative electrodes, which not only ensures the stability of the connection, but also removes the oxide layer, oil or corrosion on the outer wall of the electrode during the contact process, reduces the contact resistance, and further ensures the accuracy and consistency of the measurement data.

[0022] 3. Differentiated handling mechanisms designed for different causes of abnormality: When the problem is determined to be at the connection end, the electromagnetic chuck drives the pressure reducing switch to operate, and the voltage regulator slowly reduces the circuit voltage to zero, smoothly stopping the test and avoiding the loss of test data caused by direct power failure, while reducing impact damage to the tester and the battery under test; when the problem is determined to be internal to the battery, the emergency power switch quickly disconnects the circuit, effectively preventing safety accidents caused by battery overheating and short circuit; if a short circuit occurs, the electromagnet immediately disconnects the power, and the reset spring drives the bottom push plate and the magnetic sleeve to quickly reset, rapidly cutting off the connection between the test component and the battery under test, avoiding secondary damage to the equipment or the expansion of battery failure.

[0023] 4. The positive and negative electrodes adopt a combination structure of the first copper guide post and the second copper guide post. Combined with the insulating strip on the inner wall of the magnetic shielding sleeve and the fit design of the electrode groove, it not only ensures the tightness of the connection between the conductive copper sheet and the electrode, but also adapts to the electrode structure of different specifications of lead-acid batteries. At the same time, the insulating strip can prevent electrode short circuits, further improving the stability and safety of the testing process.

[0024] 5. The cylinder output end is connected to an active push plate, on which a magnetic suction plate is installed. An electromagnet is installed at the bottom of the top push plate, used to attract the magnetic suction plate. The bottom push plate is connected to the top plate of the test bench via a return spring. The electromagnet is connected to the measurement circuit. If the measurement circuit short-circuits during testing, the electromagnet will be de-energized. After the electromagnet is de-energized, the return spring will rebound, causing the first and second magnetic shielding sleeves to reset, thereby quickly disconnecting the test component from the battery under test and preventing secondary damage to the test component or the battery under test. Attached Figure Description

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the overall structure of the present invention.

[0026] Figure 2 This is a schematic diagram of the internal structure of the testing machine.

[0027] Figure 3 This is a schematic diagram of the connection structure between the battery under test and the test components.

[0028] Figure 4 This is a schematic diagram of the structure of the battery under test.

[0029] Figure 5 This is a schematic diagram of the overall structure of the test component.

[0030] Figure 6 This is a front view of the connection structure between the test component and the battery under test.

[0031] Figure 7 This is a cross-sectional view of the connection structure between the test component and the battery under test.

[0032] Figure 8 for Figure 7 Enlarged view of the structure of part A.

[0033] Figure 9 for Figure 7 Enlarged view of the structure of part B.

[0034] In the diagram: 1. Test machine; 2. Main controller; 3. Handle; 4. Box door; 5. Heat sink; 6. Wheel; 7. Test bench; 8. Battery under test; 9. Test assembly; 901. Cylinder; 902. Active push plate; 903. Magnetic suction plate; 904. Top push plate; 905. Slide rod; 906. Electromagnetic disk; 907. Bottom push plate; 908. Magnetic shielding sleeve one; 909. Return spring; 910. Guide sleeve; 911. Active inclined block; 912. Conductive copper sheet; 913. Insulating strip; 914. Driven inclined block; 915. Pressure reducing switch; 916. Spring two; 917. Magnetic shielding sleeve two; 918. Emergency power switch; 919. Guide rod; 920. Magnetic suction block; 921. Electromagnetic chuck one; 922. Electromagnetic chuck two; 10. Positive and negative electrodes; 101. First copper guide post; 102. Second copper guide post; 103. Groove; 11. Plastic shell. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the invention.

[0036] Example 1: like Figures 1-4 As shown, a rapid capacity testing device for lead-acid batteries includes a testing machine 1, a testing platform 7 installed inside the testing machine 1, a battery 8 to be tested placed inside the testing platform 7, and a testing assembly 9 installed on the top of the testing platform 7. A door 4 is provided on the front side of the testing machine 1, heat sinks 5 are installed on the side walls of the testing machine 1, and a main control unit 2 is installed on the testing machine 1. A handle 3 is installed on the testing machine 1, and wheels 6 are installed on the bottom for easy movement of the testing machine 1.

[0037] The test platform 7 includes a top plate and a bottom plate, which are connected by a connecting rod. The battery to be tested 8 is placed between the top plate and the bottom plate.

[0038] like Figure 3 As shown, the test assembly 9 includes a cylinder 901. The cylinder 901 is installed on the top of the test platform 7. The cylinder 901 drives the push plate 904 to move up and down. A slide rod 905 is slidably installed on the top plate of the test platform 7. A bottom push plate 907 is installed at the lower end of the slide rod 905, and the push plate 904 is installed at the upper end. A magnetic shielding sleeve 1 908 and a magnetic shielding sleeve 2 917 are installed on the bottom push plate 907. The bottom push plate 907 moves downward to connect the conductive copper sheet 912 inside the magnetic shielding sleeve 1 908 and the magnetic shielding sleeve 2 917 to the positive and negative electrodes 10 on the battery under test 8 to connect the battery under test 8.

[0039] Specifically, such as Figure 7 and Figure 8 As shown, the positive and negative electrodes 10 include a first copper guide post 101 and a second copper guide post 102. A groove 103 is formed between the first copper guide post 101 and the second copper guide post 102. An insulating strip 913 is installed on the inner wall of the magnetic shielding sleeve 1 908 and the magnetic shielding sleeve 2 917. The insulating strip 913 is attached to the outer wall of the positive and negative electrodes 10, and the insulating strip 913 cooperates with the groove 103.

[0040] like Figure 3 As shown, a plastic shell 11 is installed on the top of the battery under test 8, which surrounds the positive and negative electrodes 10. At the same time, a gap is provided between the positive and negative electrodes 10 and the plastic shell 11 for inserting the magnetic shielding sleeve 908 and the magnetic shielding sleeve 917.

[0041] In practical use, the battery under test 8 is placed inside the test platform 7, so that the positive and negative electrodes 10 on the battery under test 8 correspond to the magnetic shielding sleeve 1 908 and the magnetic shielding sleeve 2 917, respectively. The cylinder 901 drives the bottom push plate 907 to move down synchronously. During this process, the insulating strip 913 at the bottom of the magnetic shielding sleeve 1 908 and the magnetic shielding sleeve 2 917 removes the oxide layer, oil stains or corrosion on the outer wall of the positive and negative electrodes 10, reduces the contact resistance, and ensures good contact. When the insulating strip 913 is stuck in the groove 103 between the first copper guide post 101 and the second copper guide post 102, the cylinder 901 is closed. At this time, the conductive copper sheet 912 inside the magnetic shielding sleeve 1 908 and the magnetic shielding sleeve 2 917 are connected to the first copper guide post 101, realizing the connection between the test assembly 9 and the battery under test 8. The testing machine 1 measures the voltage of the battery 8 under test. Voltage measurement requires setting reasonable test parameters based on the battery 8's capacity and condition. The testing machine 1 measures parameters such as battery voltage, internal resistance, and charge / discharge characteristics, and, combined with built-in algorithms and standard curves, quickly and accurately determines the battery's capacity and health status. During the test, magnetic shielding sleeves 908 and 917 isolate external magnetic fields from interfering with the connection between the conductive copper sheet 912 and the positive and negative electrodes 10, improving the accuracy of the measured data.

[0042] Abnormal Judgment and Handling: If a voltage drop or overheating of the tested battery 8 occurs during the test, restart cylinder 901 to move the bottom push plate 907 downward, so that the conductive copper sheet 912 gradually connects with the second copper guide post 102 to increase the contact area and reduce the contact resistance. If the measured voltage rises significantly and the overheating of the tested battery 8 is relieved, the problem is determined to be caused by the connection between the tested battery 8 and the test component 9. If the measured voltage continues to drop or drops slowly and the overheating of the tested battery 8 is still severe, the problem is determined to be caused by the internal structure of the tested battery 8.

[0043] Example 2: Unlike Example 1, such as Figure 7 As shown, the magnetic shielding sleeve 1 908 and the magnetic shielding sleeve 2 917 are respectively equipped with a pressure reducing switch 915 and an emergency power switch 918 that can move up and down. The pressure reducing switch 915 is electrically connected to the voltage regulator of the testing machine 1, and the emergency power switch 918 is used to measure the continuity of the circuit.

[0044] like Figures 5-8 As shown, a guide sleeve 910 is fixedly installed on the bottom push plate 907. A driven inclined block 914 is installed on the top of both the pressure reducing switch 915 and the emergency power switch 918, and a spring 916 is installed on the bottom of both. A guide rod 919 is slidably installed inside the guide sleeve 910. An active inclined block 911 is installed at both ends of the guide rod 919. The active inclined block 911 at one end of the guide rod 919 cooperates with the driven inclined block 914 on the top of the pressure reducing switch 915, and the active inclined block 911 at the other end of the guide rod 919 cooperates with the driven inclined block 914 on the top of the emergency power switch 918.

[0045] like Figure 9 As shown, the guide rod 919 has a magnetic suction block 920 in the middle. The inner walls of both ends of the guide sleeve 910 are respectively equipped with an electromagnetic chuck 921 and an electromagnetic chuck 922. The electromagnetic chuck 921 and the electromagnetic chuck 922 are controlled by the main controller 2. When the electromagnetic chuck 921 is energized, it attracts the magnetic suction block 920. When the electromagnetic chuck 922 is energized, it attracts the magnetic suction block 920. The electromagnetic chuck 921 and the electromagnetic chuck 922 cannot be energized at the same time.

[0046] In this embodiment, the electromagnetic chuck 921 is located at one end of the guide sleeve 910 near the pressure reducing switch 915, and the electromagnetic chuck 922 is located at the other end.

[0047] If voltage drop and battery overheating are detected as being caused by the connection between the tested battery 8 and the test component 9, the measured voltage will significantly recover, and the overall overheating problem of the tested battery 8 will be significantly alleviated. At this time, the electromagnetic chuck 921 will be energized, and the electromagnetic chuck 921 will drive the guide rod 919 to move towards the pressure reducing switch 915 by adsorbing the magnetic block 920. With the cooperation of the active inclined block 911 and the driven inclined block 914, the guide rod 919 will drive the pressure reducing switch 915 to move downward, so that the position of the pressure reducing switch 915 is lower than the emergency power switch 918. As the bottom push plate 907 moves down, the positive and negative electrodes 10 press the pressure reducing switch 915, and the voltage of the measuring circuit will be slowly reduced until the voltage is zero by pressing the pressure reducing switch 915, and the test will stop smoothly, avoiding the loss of test data and reducing the damage to the tested battery 8 or the test machine 1 caused by directly disconnecting the power supply.

[0048] If the voltage drop and battery overheating are detected as being caused by internal issues within the tested battery 8, and the measured voltage continues to drop or drops slowly while the overheating problem remains severe, then the electromagnetic chuck 922 is energized. The electromagnetic chuck 922, through the attraction of the magnetic block 920, moves the guide rod 919 towards the emergency power switch 918. With the cooperation of the active inclined block 911 and the driven inclined block 914, the guide rod 919 moves the emergency power switch 918 downwards, lowering its position below the pressure reducing switch 915. As the bottom push plate 907 moves downwards, the positive and negative electrodes 10 press the emergency power switch 918, directly disconnecting the power supply to the measuring circuit and preventing accidents.

[0049] Example 3: Unlike Example 1, such as Figure 5 and 6As shown, the output end of the cylinder 901 is connected to the active push plate 902, the active push plate 902 is equipped with a magnetic suction plate 903, and the bottom of the push plate 904 is equipped with an electromagnet 906, which is used to attract the magnetic suction plate 903.

[0050] The bottom push plate 907 is connected to the top plate of the test bench 7 via a return spring 909.

[0051] The power disk 906 is connected to the measurement circuit. If the measurement circuit is short-circuited during the test, the power disk 906 will be de-energized. After the power disk 906 is de-energized, the reset spring 909 will rebound and drive the magnetic shielding sleeve 1 908 and magnetic shielding sleeve 2 917 to reset, thereby quickly disconnecting the test component 9 from the battery under test 8 and avoiding secondary damage to the test component 9 or the battery under test 8.

[0052] Example 4: A method for rapid capacity testing of lead-acid batteries includes the following steps: Step 1: Place the battery under test 8 in the test stage 7 inside the test machine 1, so that the positive and negative electrodes 10 on the top of the battery under test 8 correspond to the positions of the magnetic shielding sleeve 908 and the magnetic shielding sleeve 917 of the test assembly 9, respectively. Step 2: The electromagnet 906 at the bottom of the push plate 904 is energized, causing the electromagnet 906 to attract the magnetic plate 903. The cylinder 901 is activated, and the cylinder 901 drives the active push plate 902, the push plate 904 and the bottom push plate 907 to move down synchronously. The bottom push plate 907 drives the magnetic shielding sleeve 1 908 and the magnetic shielding sleeve 2 917 to be fitted outside the positive and negative electrodes 10. The conductive copper sheet 912 inside the magnetic shielding sleeve 1 908 and the magnetic shielding sleeve 2 917 is connected to the first copper guide post 101, and the reset spring 909 connected to the bottom push plate 907 is stretched. Step 3: The tester 1 measures the voltage, internal resistance and charge / discharge characteristics of the battery 8 under test. During the test, the magnetic shielding sleeve 1 908 and the magnetic shielding sleeve 2 917 isolate the external magnetic field from the interference of the conductive copper sheet 912 and the positive and negative electrodes 10. Abnormal Judgment and Handling: If a voltage drop or overheating of the tested battery 8 occurs during the test, restart cylinder 901 to move bottom push plate 907 downward, so that conductive copper sheet 912 gradually connects with second copper guide post 102 to increase contact area and reduce contact resistance. If the measured voltage rises significantly and the overheating of the tested battery 8 is relieved, the problem is determined to be caused by the connection end between the tested battery 8 and test component 9. Electromagnetic chuck 921 is energized and attracts magnetic block 920 in the middle of guide rod 919, moving guide rod 919 towards pressure reducing switch 915. Active inclined block 911 at one end of guide rod 919 cooperates with driven inclined block 914 at the top of pressure reducing switch 915, so that pressure reducing switch 915 moves down below emergency power switch 918. As bottom push plate 907 continues to move down, positive and negative electrodes 10 press pressure reducing switch 915, and the voltage of the measuring circuit is slowly reduced to zero through the voltage regulator of test machine 1, and the test is stopped smoothly. If the measured voltage continues to drop or drops slowly and the tested battery 8 is still overheating, the problem is determined to be caused by the inside of the tested battery 8. The electromagnetic chuck 922 at the end of the guide sleeve 910 away from the pressure reducing switch 915 is energized. The electromagnetic chuck 922 attracts the magnetic block 920, which drives the guide rod 919 to move towards the emergency power switch 918. The active inclined block 911 at the other end of the guide rod 919 cooperates with the driven inclined block 914 at the top of the emergency power switch 918, causing the emergency power switch 918 to move down below the pressure reducing switch 915. As the bottom push plate 907 continues to move down, the positive and negative electrodes 10 press the emergency power switch 918, directly disconnecting the power supply of the measurement circuit.

[0053] If a short circuit occurs in the measurement circuit, the power disk 906 connected to the measurement circuit is de-energized, and the reset spring 909 rebounds, causing the bottom push plate 907, the first magnetic sleeve 908 and the second magnetic sleeve 917 to reset, disconnecting the test assembly 9 from the battery under test 8.

[0054] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A device for rapid capacity testing of lead-acid batteries, characterized in that, The test machine (1) is included. A test platform (7) is installed inside the test machine (1). The battery under test (8) is placed inside the test platform (7). A test assembly (9) is installed on the top of the test platform (7). The test assembly (9) includes a cylinder (901). The cylinder (901) is installed on the top of the test platform (7). The cylinder (901) drives the push plate (904) to move up and down. A slide rod (905) is slidably installed on the top plate of the test platform (7). A bottom push plate (907) is installed at the lower end of the slide rod (905). A push plate (904) is installed at the upper end. A magnetic shielding sleeve one (908) and a magnetic shielding sleeve two (917) are installed on the bottom push plate (907). The bottom push plate (907) moves downward to connect the conductive copper sheet (912) inside the magnetic shielding sleeve one (908) and the magnetic shielding sleeve two (917) to the positive and negative electrodes (10) on the battery under test (8) to connect the battery under test (8).

2. The rapid capacity testing device for lead-acid batteries according to claim 1, characterized in that, The positive and negative electrodes (10) include a first copper post (101) and a second copper post (102).

3. The rapid capacity testing device for lead-acid batteries according to claim 2, characterized in that, A groove (103) is formed between the first copper guide post (101) and the second copper guide post (102). Insulating strips (913) are installed on the inner walls of the first magnetic shielding sleeve (908) and the second magnetic shielding sleeve (917). The insulating strips (913) are attached to the outer walls of the positive and negative electrodes (10), and the insulating strips (913) cooperate with the groove (103).

4. The rapid capacity testing device for lead-acid batteries according to claim 1, characterized in that, The magnetic shielding sleeve one (908) and magnetic shielding sleeve two (917) are respectively equipped with a pressure reducing switch (915) and an emergency power switch (918) that can move up and down. The pressure reducing switch (915) is electrically connected to the voltage regulator of the test machine (1), and the emergency power switch (918) is used to measure the continuity of the circuit.

5. A rapid capacity testing device for lead-acid batteries according to claim 4, characterized in that, A guide sleeve (910) is fixedly installed on the bottom push plate (907). A driven inclined block (914) is installed on the top of both the pressure reducing switch (915) and the emergency power switch (918), and a spring (916) is installed on the bottom of both. A guide rod (919) is horizontally slidably installed inside the guide sleeve (910). An active inclined block (911) is installed at both ends of the guide rod (919). The active inclined block (911) at one end of the guide rod (919) cooperates with the driven inclined block (914) at the top of the pressure reducing switch (915), and the active inclined block (911) at the other end of the guide rod (919) cooperates with the driven inclined block (914) at the top of the emergency power switch (918).

6. The rapid capacity testing device for lead-acid batteries according to claim 5, characterized in that, The guide rod (919) is provided with an adsorption magnetic block (920) in the middle. The inner walls of both ends of the guide sleeve (910) are respectively equipped with an electromagnetic chuck one (921) and an electromagnetic chuck two (922). When the electromagnetic chuck one (921) is energized, the electromagnetic chuck one (921) adsorbs the magnetic block (920). When the electromagnetic chuck two (922) is energized, the electromagnetic chuck two (922) adsorbs the magnetic block (920). The electromagnetic chuck one (921) and the electromagnetic chuck two (922) cannot be energized at the same time.

7. A rapid capacity testing device for lead-acid batteries according to claim 6, characterized in that, The first electromagnetic chuck (921) is located at one end of the guide sleeve (910) near the pressure reducing switch (915), and the second electromagnetic chuck (922) is located at the other end.

8. The rapid capacity testing device for lead-acid batteries according to claim 1, characterized in that, The output end of the cylinder (901) is connected to the active push plate (902), the active push plate (902) is equipped with a magnetic suction plate (903), and the bottom of the push plate (904) is equipped with an electromagnet (906), which is used to attract the magnetic suction plate (903).

9. A rapid capacity testing device for lead-acid batteries according to claim 8, characterized in that, The bottom push plate (907) is connected to the top plate of the test bench (7) via a return spring (909).

10. A rapid capacity testing device for lead-acid batteries according to claim 1, characterized in that, The test machine (1) is equipped with a door (4), a heat sink (5) is installed on the side wall of the test machine (1), and a main control machine (2) is installed on the test machine (1).

11. A rapid capacity testing device for lead-acid batteries according to claim 1, characterized in that, The test machine (1) is equipped with a handle (3) and wheels (6) are installed at the bottom of the test machine (1).

12. The rapid capacity testing device for lead-acid batteries according to claim 1, characterized in that, The battery under test (8) is fitted with a plastic shell (11) on top, which surrounds the positive and negative electrodes (10). At the same time, there is a gap between the positive and negative electrodes (10) and the plastic shell (11) for inserting the first magnetic shielding sleeve (908) and the second magnetic shielding sleeve (917).

13. The detection method for a rapid capacity detection device for lead-acid batteries according to claim 7, characterized in that, The positive and negative electrodes (10) include a first copper guide post (101) and a second copper guide post (102). A groove (103) is formed between the first copper guide post (101) and the second copper guide post (102). Insulating strips (913) are installed on the inner walls of the first magnetic shielding sleeve (908) and the second magnetic shielding sleeve (917). The insulating strips (913) are attached to the outer walls of the positive and negative electrodes (10) and the insulating strips (913) cooperate with the grooves (103). The output end of the cylinder (901) is connected to the active push plate (902). A magnetic suction plate (903) is installed on the active push plate (902). An electric disk (906) is installed at the bottom of the top push plate (904). The electric disk (906) is used to attract the magnetic suction plate (903). The bottom push plate (907) is connected to the top plate of the test bench (7) through a reset spring (909). Includes the following steps: Step 1: Place the battery (8) to be tested in the test stage (7) inside the test machine (1), so that the positive and negative electrodes (10) on the top of the battery (8) correspond to the positions of the magnetic shielding sleeve 1 (908) and the magnetic shielding sleeve 2 (917) of the test assembly (9), respectively. Step 2: The electric disk (906) at the bottom of the push plate (904) is energized, so that the electric disk (906) attracts the magnetic suction plate (903). The cylinder (901) is started. The cylinder (901) drives the active push plate (902), the push plate (904) and the bottom push plate (907) to move down synchronously. The bottom push plate (907) drives the magnetic shielding sleeve one (908) and the magnetic shielding sleeve two (917) to be sleeved on the outside of the positive and negative electrodes (10). The conductive copper sheet (912) inside the magnetic shielding sleeve one (908) and the magnetic shielding sleeve two (917) is connected to the first copper guide post (101). The reset spring (909) connected to the bottom push plate (907) is stretched. Step 3: The tester (1) measures the voltage, internal resistance and charge / discharge characteristics of the battery (8) under test. During the test, the magnetic shielding sleeve 1 (908) and the magnetic shielding sleeve 2 (917) isolate the external magnetic field from the interference of the conductive copper sheet (912) and the positive and negative electrodes (10). Abnormal Judgment and Handling: If a voltage drop or overheating of the tested battery (8) occurs during the test, restart the cylinder (901) to move the bottom push plate (907) down, so that the conductive copper sheet (912) gradually connects with the second copper guide post (102) to increase the contact area and reduce the contact resistance. If the measured voltage rises significantly and the overheating of the tested battery (8) is relieved, the problem is determined to be caused by the connection end between the tested battery (8) and the test assembly (9). The electromagnetic chuck one (921) is energized, and the electromagnetic chuck one (921) adsorbs the guide rod (912). 9) The magnetic block (920) in the middle drives the guide rod (919) to move towards the pressure reducing switch (915). The active inclined block (911) at one end of the guide rod (919) cooperates with the driven inclined block (914) at the top of the pressure reducing switch (915) to move the pressure reducing switch (915) down to below the emergency power switch (918). As the bottom push plate (907) continues to move down, the positive and negative electrodes (10) press the pressure reducing switch (915), and the voltage of the measuring circuit is slowly reduced to zero by the voltage regulator of the test machine (1), and the test is stopped smoothly. If the measured voltage continues to drop or drops slowly and the tested battery (8) is still severely overheating, the problem is determined to be caused by the inside of the tested battery (8). The electromagnetic chuck two (922) at the end of the guide sleeve (910) away from the pressure reducing switch (915) is energized. The electromagnetic chuck two (922) attracts the magnetic block (920), which drives the guide rod (919) to move towards the emergency power switch (918). The active inclined block (911) at the other end of the guide rod (919) cooperates with the driven inclined block (914) at the top of the emergency power switch (918) to move the emergency power switch (918) down to below the pressure reducing switch (915). As the bottom push plate (907) continues to move down, the positive and negative electrodes (10) press the emergency power switch (918) to directly disconnect the power supply of the measurement circuit.

14. The detection method for a rapid capacity detection device for lead-acid batteries according to claim 13, characterized in that, In step three, if a short circuit occurs in the measurement circuit, the power disk (906) connected to the measurement circuit is de-energized, and the reset spring (909) rebounds to drive the bottom push plate (907), the first magnetic shielding sleeve (908) and the second magnetic shielding sleeve (917) to reset, disconnecting the test assembly (9) from the battery under test (8).

Images