Device for detecting micro short circuit of automobile battery

Abstract

The utility model provides an automobile battery micro short circuit detection device, which comprises a battery shell and a battery shell cover arranged at the top of the battery shell, and a plurality of groups of acid adding holes are arranged at the top of the battery shell cover; a U-shaped gas guide tube is mounted at the top of the battery shell cover, a U-shaped transparent tube is mounted at one end of the U-shaped gas guide tube, and a hollow floating ball sensor is arranged in the U-shaped transparent tube; a detection female joint is arranged at the top of one group of acid adding holes, a detection male joint is arranged at the other end of the U-shaped gas guide pipe, and a movable connecting sleeve is movably connected to the outer side of the detection male joint. According to the detection equipment for the micro short circuit of the automobile battery, the two groups of joints are arranged to be in sealed connection with the battery, and when the battery is charged, generated gas is collected to push the liquid level in the U-shaped transparent pipe and the hollow floating ball sensor floating on the liquid level to rise so as to detect the amount of gas generated by electrolysis; therefore, the detection result of the battery can be visually and accurately obtained through the gas quantity.

Description

Technical Field

[0001] This utility model relates to the field of lead-acid battery testing technology, and in particular to a device for detecting micro-short circuits in automotive batteries. Background Technology

[0002] Lead-acid batteries are rechargeable batteries whose electrodes are primarily made of lead and its oxides, and whose electrolyte is a sulfuric acid solution. In the discharged state, the positive electrode is mainly composed of lead dioxide, and the negative electrode is mainly composed of lead; in the charged state, both the positive and negative electrodes are mainly composed of lead sulfate. A single lead-acid battery cell has a nominal voltage of 2.0V, can discharge to 1.5V, and can charge to 2.4V. In practice, six single lead-acid batteries are often connected in series to form a nominal 12V lead-acid battery; 24V, 36V, and 48V batteries also exist.

[0003] Chinese patent CN115327398A discloses a charge / discharge testing device for lead-acid battery processing, including a base. A storage box for holding lead-acid batteries is fixedly installed on one side of the top of the base. Two L-shaped grooves are symmetrically opened on the front and back of the storage box, and guide grooves are opened below the two L-shaped grooves. Fixing mechanisms are symmetrically arranged on the storage box, and a support mechanism for supporting lead-acid batteries is slidably arranged inside the storage box. Under the gravity of the lead-acid batteries, the support plate moves downward, pulling the transmission rod downward, causing the rotating plate to rotate, and the pressing plate to provide pressing force to the lead-acid batteries to prevent longitudinal shaking. At the same time, the support plate pulls two limiting plates downward, causing the two limiting plates to flip towards the lead-acid batteries, preventing horizontal shaking of the lead-acid batteries and ensuring the stability of the lead-acid batteries during testing.

[0004] However, the current technical solution mainly uses the measurement of resistance value to determine whether there is a short circuit. During the measurement process, there may be a large error due to factors such as the test pen and wires. At the same time, there is a possibility of misjudging micro-short-circuited batteries. Therefore, it is necessary to invent a micro-short-circuit detection device for automotive batteries to realize the detection of micro-short-circuited batteries. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a micro-short circuit detection device for automotive batteries. This device achieves its detection function through a connection structure in conjunction with a gas-conducting structure, thus solving the problem of inaccurate detection.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A micro-short circuit detection device for automotive batteries includes a battery housing and a battery cover mounted on the top of the battery housing. The top of the battery cover has multiple sets of acid filling holes, which are linearly distributed on the top of the battery cover. A U-shaped vent tube is mounted on the top of the battery cover, with a U-shaped transparent tube attached to one end of the U-shaped vent tube. A hollow float sensor is installed inside the U-shaped transparent tube. A detection female connector is located on the top of one set of acid filling holes, and a detection male connector is located at the other end of the U-shaped vent tube. A movable connecting sleeve is movably connected to the outer side of the detection male connector, and the outer side of the movable connecting sleeve has an external thread. The inner wall of the detection female connector has an internal thread.

[0008] The top of the battery casing is provided with two sets of electrode posts, which are symmetrically distributed on the top of the battery casing.

[0009] The bottom of the U-shaped transparent tube is provided with a support base, and the top of the support base is fixedly connected with a locking block.

[0010] Both the U-shaped air guide tube and the U-shaped transparent tube have a mating end at one end. The bottom of the mating end is threaded with multiple sets of mating bolts, which are arranged in a ring at the bottom of the mating end.

[0011] Both the U-shaped air guide tube and the U-shaped transparent tube have a sealing ring at one end.

[0012] The inner wall of the movable connecting sleeve is provided with two sets of movable inner protruding rings, which are symmetrically distributed on the inner wall of the movable connecting sleeve. The outer wall of the detection male connector is provided with two sets of movable outer grooves, which are symmetrically distributed on the outer wall of the detection male connector.

[0013] The male connector is provided with a compression ring at its bottom end, and the female connector is provided with a sealing inner sleeve. A movable sealing ring is movably connected inside the sealing inner sleeve, and a sealing spring is provided at the bottom of the movable sealing ring.

[0014] The beneficial effects of this utility model are as follows:

[0015] (1) This utility model charges the battery by connecting electrode posts on the battery casing cover and disconnects the power after charging for a certain period of time. When other acid filling holes on the battery casing cover are blocked, the gas generated by electrolysis during battery charging is injected into the U-shaped transparent tube through the U-shaped gas guide tube. This allows the gas generated by electrolysis for a limited time to be collected and injected into the U-shaped transparent tube. The change in gas pressure difference drives the liquid level at the other end of the U-shaped transparent tube to rise. The rise in liquid level also drives the hollow float sensor with buoyancy to rise. The amount of gas generated by the internal electrolyte electrolysis during battery charging can be determined by visually observing the change in the liquid level and by sensing the change in the liquid level by the hollow float sensor. If it is a short-circuited battery, no electrolytic gas will be generated. If it is a micro-short-circuited battery, the amount of gas generated is relatively small. Normal batteries will generate more gas. The battery condition can be judged by comparing the amount of gas generated. Since the charging current, time and other factors are controllable, the detection function of this device can be realized.

[0016] (2) This utility model achieves connection by connecting the external thread on the outer side of the test male connector to the internal thread on the inner wall of the test female connector, so that the tail end of the test male connector can be continuously inserted into the test female connector. During connection, the extrusion ring at the tail end of the test male connector will continuously penetrate into the sealing groove formed between the test female connector and its internal sealing sleeve, thereby extruding the movable sealing ring and sealing spring in the sealing groove. The rebound force of the sealing spring will make the movable sealing ring and the extrusion ring come into close contact, thereby achieving a sealed connection between the U-shaped air guide tube and the acid filling hole.

[0017] (3) This utility model achieves docking by using the threaded method of the docking bolt and the nut on the outside of the bolt on the docking end of the U-shaped air guide tube and the U-shaped transparent tube, and by setting the sealing ring to press and seal when the thread is tightened, thereby achieving docking of the two sets of pipes and ensuring the flow of gas.

[0018] In summary, this utility model has the advantages of simple detection method and high accuracy. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a micro short circuit detection device for automotive batteries according to the present invention;

[0020] Figure 2 This is a top view schematic diagram of a micro short circuit detection device for automotive batteries according to the present invention;

[0021] Figure 3 This is a schematic diagram of the detection component structure of a micro short circuit detection device for automotive batteries according to this utility model;

[0022] Figure 4 This is a schematic diagram of a U-shaped air duct structure for a micro short circuit detection device for automotive batteries according to this utility model;

[0023] Figure 5 This is a schematic diagram of the overall structure of a pipe joint for a micro short circuit detection device for automobile batteries according to this utility model;

[0024] Figure 6 This is a schematic diagram of the exploded structure of a pipe joint for a micro short circuit detection device for automotive batteries according to this utility model.

[0025] Figure 7 This is a schematic diagram of the cross-sectional structure of a pipe joint for a micro short circuit detection device for automotive batteries according to this utility model.

[0026] Figure Labels

[0027] 1. Battery casing; 2. Battery casing cover; 3. Electrode post; 4. Acid filling hole; 5. U-shaped vent tube; 6. U-shaped transparent tube; 7. Support base; 8. Locking block; 9. Hollow float sensor; 10. Connecting end; 11. Connecting bolt; 12. Sealing ring; 13. Detection female connector; 14. Detection male connector; 15. Movable connecting sleeve; 16. Movable inner convex ring; 17. Movable outer groove; 18. Connecting external thread; 19. Connecting internal thread; 20. Compression ring; 21. Sealing inner sleeve; 22. Movable sealing ring; 23. Sealing spring. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] Example

[0032] like Figures 1-7 As shown, this embodiment provides a micro-short circuit detection device for automotive batteries, including a battery housing 1 and a battery cover 2 mounted on the top of the battery housing 1. The top of the battery cover 2 is provided with multiple sets of acid filling holes 4, which are linearly distributed on the top of the battery cover 2. A U-shaped air guide tube 5 is installed on the top of the battery cover 2. A U-shaped transparent tube 6 is installed at one end of the U-shaped air guide tube 5, and a hollow float sensor 9 is installed inside the U-shaped transparent tube 6. A detection female connector 13 is provided on the top of one set of acid filling holes 4, and a detection male connector 14 is provided at the other end of the U-shaped air guide tube 5. A movable connecting sleeve 15 is movably connected to the outside of the detection male connector 14, and an external connecting thread 18 is provided on the outside of the movable connecting sleeve 15. An internal connecting thread 19 is provided on the inner wall of the detection female connector 13.

[0033] The battery casing 1 and battery cover 2 together constitute the battery outer shell, while multiple sets of acid filling holes 4 are the acid filling positions for the battery. One end of the U-shaped vent tube 5 is connected to the acid filling hole 4, and the other end is connected to the U-shaped transparent tube 6. This allows for the injection of a suitable amount of water into the U-shaped transparent tube 6 when other acid filling holes 4 are blocked. During battery charging, electrolysis generates gas, which is then injected into the U-shaped transparent tube 6 through the U-shaped vent tube 5. This allows for the collection of gas generated by electrolysis within a limited time and its injection into the U-shaped transparent tube 6. The change in gas pressure difference drives the rise of the liquid level at the other end of the U-shaped transparent tube 6, which can then be visually observed. The position change and hollow float sensor 9 are used to sense changes in the liquid level to determine the amount of gas generated by the electrolysis of the internal electrolyte during battery charging. If it is a short-circuited battery, no electrolytic gas will be generated. If it is a micro-short-circuited battery, relatively less gas will be generated. Normal batteries will generate more gas. The battery condition is determined by comparing the amount of gas generated. Since the charging current, duration and other factors are controllable, the detection function of the device is realized. The detection female connector 13 and detection male connector 14 are connecting components of the U-shaped gas guide tube 5 and the acid filling hole 4. These two sets of components are realized by the threaded connection of the external thread 18 and the internal thread 19.

[0034] Two sets of electrode posts 3 are provided on the top of the battery case cover 2, and the two sets of electrode posts 3 are symmetrically distributed on the top of the battery case cover 2.

[0035] Among them, two sets of electrode posts 3 are the positive and negative terminals of the battery, which makes it convenient for users to connect the battery.

[0036] The bottom of the U-shaped transparent tube 6 is provided with a support base 7, and the top of the support base 7 is fixedly connected with a locking block 8.

[0037] The groove on the top locking block 8 of the support base 7 can accommodate the U-shaped transparent tube 6, thereby enabling the placement and support of the U-shaped transparent tube 6.

[0038] Both the U-shaped air guide tube 5 and the U-shaped transparent tube 6 have a docking end 10 at one end. The bottom of the docking end 10 is threaded with multiple sets of docking bolts 11, which are arranged in a ring at the bottom of the docking end 10.

[0039] Among them, the docking end 10 is a connection structure of U-shaped air guide tube 5 and U-shaped transparent tube 6. This structure realizes the docking of the two sets of pipes by multiple sets of docking bolts 11 and the threaded locking method of the nuts on the bolts.

[0040] Both the U-shaped air guide tube 5 and the U-shaped transparent tube 6 have a sealing ring 12 at one end.

[0041] The sealing ring 12 is installed so that the two sets of pipe threads are pressed together after they are connected, thereby sealing the connection between the two sets of pipes and preventing gas leakage from affecting the accuracy of the detection operation.

[0042] The inner wall of the movable connecting sleeve 15 is provided with two sets of movable inner protruding rings 16, which are symmetrically distributed on the inner wall of the movable connecting sleeve 15. The outer wall of the detection male connector 14 is provided with two sets of movable outer grooves 17, which are symmetrically distributed on the outer wall of the detection male connector 14.

[0043] Among them, two sets of movable inner protruding rings 16 can be movably connected to two sets of movable outer grooves 17, thereby realizing the movable connection between the movable connecting sleeve 15 and the detection male connector 14. Furthermore, this connection method realizes the rotation and limiting of the movable connecting sleeve 15, which facilitates the subsequent docking with the detection female connector 13.

[0044] The male connector 14 is provided with a compression ring 20 at its bottom end. The female connector 13 is provided with a sealing inner sleeve 21. A movable sealing ring 22 is movably connected inside the sealing inner sleeve 21. A sealing spring 23 is provided at the bottom of the movable sealing ring 22.

[0045] When the male connector 14 and the female connector 13 are mated, the compression ring 20 can penetrate into the sealing groove formed between the sealing inner sleeve 21 and the female connector 13, thereby contacting and compressing the movable sealing ring 22 and the sealing spring 23 in the groove. The rebound force of the sealing spring 23 makes the movable sealing ring 22 and the compression ring 20 come into close contact, thereby achieving internal sealing between the male connector 14 and the female connector 13.

[0046] Working principle:

[0047] Before testing, the user installs the test female connector 13 onto a set of acid filling holes 4 and seals the other sets of acid filling holes 4. Then, the user brings the docking end 10 of the U-shaped air guide tube 5 close to the docking end 10 of the U-shaped transparent tube 6 with an appropriate amount of water added, and tightens the multiple sets of docking bolts 11 and the nuts on the bolts to achieve docking of the two sets of pipes. When docking is completed, sealing is achieved through their respective sealing rings 12.

[0048] Then, the user places the U-shaped transparent tube 6 next to the battery casing 1 using the support base 7. Next, the user inserts the male connector 14 on the other end of the U-shaped air guide tube 5 into the female connector 13 on the pre-installed acid filling hole 4. Then, the user rotates the movable connecting sleeve 15 on the male connector 14. The threaded connection between the external thread 18 on its outer side and the internal thread 19 on the inner wall of the female connector 13 will allow the tail end of the male connector 14 to continuously penetrate into the female connector 13 to achieve connection. At the same time, the compression ring 20 at the tail end of the male connector 14 will continuously penetrate into the sealing groove formed between the female connector 13 and its inner sealing sleeve 21 during connection, and compress the movable sealing ring 22 and the sealing spring 23 in the sealing groove. Thus, the rebound force of the sealing spring 23 makes the movable sealing ring 22 and the compression ring 20 come into close contact, thereby achieving a sealed connection between the U-shaped air guide tube 5 and the acid filling hole 4.

[0049] The user then charges the battery via the electrode post 3 on the battery casing 2 and disconnects the power after a certain charging time. When the other acid filling holes 4 on the battery casing 2 are blocked, the gas generated during battery charging is injected into the U-shaped transparent tube 6 through the U-shaped gas guide tube 5. This allows the gas generated during electrolysis within a limited time to be collected and injected into the U-shaped transparent tube 6. The change in gas pressure difference drives the liquid level at the other end of the U-shaped transparent tube 6 to rise. The rise in liquid level also causes the hollow float sensor 9 with buoyancy to rise. The amount of gas generated by the internal electrolyte electrolysis during battery charging can be determined by visually observing the change in liquid level and by sensing the change in liquid level by the hollow float sensor 9. If it is a short-circuited battery, no electrolytic gas will be generated. If it is a micro-short-circuited battery, relatively less gas will be generated. Normal batteries will generate more gas. The battery condition can be judged by comparing the amount of gas generated. Since the charging current, time and other factors are controllable, the detection function of this micro-short-circuit detection device for automobile batteries can be realized.

[0050] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A micro-short circuit detection device for automotive batteries, comprising a battery casing (1), characterized in that, It also includes a battery cover (2) installed on the top of the battery housing (1), and the top of the battery cover (2) is provided with multiple sets of acid filling holes (4), and the multiple sets of acid filling holes (4) are linearly distributed on the top of the battery cover (2); A U-shaped air duct (5) is installed on the top of the battery casing cover (2), and a U-shaped transparent tube (6) is installed at one end of the U-shaped air duct (5). A hollow float sensor (9) is installed inside the U-shaped transparent tube (6). A female detection connector (13) is provided at the top of a set of acid addition holes (4), and a male detection connector (14) is provided at the other end of the U-shaped air guide tube (5). A movable connecting sleeve (15) is movably connected to the outside of the male detection connector (14), and an external connecting thread (18) is provided on the outside of the movable connecting sleeve (15). An internal connecting thread (19) is provided on the inner wall of the female detection connector (13).

2. The micro-short circuit detection device for automotive batteries according to claim 1, characterized in that, The top of the battery case cover (2) is provided with two sets of electrode posts (3), and the two sets of electrode posts (3) are symmetrically distributed on the top of the battery case cover (2).

3. The micro-short circuit detection device for automotive batteries according to claim 1, characterized in that, The bottom of the U-shaped transparent tube (6) is provided with a support base (7), and the top of the support base (7) is fixedly connected with a locking block (8).

4. The micro-short circuit detection device for automotive batteries according to claim 1, characterized in that, Both the U-shaped air guide tube (5) and the U-shaped transparent tube (6) are provided with a docking end (10) at one end. The bottom of the docking end (10) is threaded with multiple sets of docking bolts (11), and the multiple sets of docking bolts (11) are distributed in a ring at the bottom of the docking end (10).

5. The micro-short circuit detection device for automotive batteries according to claim 1, characterized in that, A sealing ring (12) is provided at one end of both the U-shaped air guide tube (5) and the U-shaped transparent tube (6).

6. The micro-short circuit detection device for automotive batteries according to claim 1, characterized in that, The inner wall of the movable connecting sleeve (15) is provided with two sets of movable inner protruding rings (16), and the two sets of movable inner protruding rings (16) are symmetrically distributed on the inner wall of the movable connecting sleeve (15). The outer wall of the detection male connector (14) is provided with two sets of movable outer grooves (17), and the two sets of movable outer grooves (17) are symmetrically distributed on the outer wall of the detection male connector (14).

7. The micro-short circuit detection device for automotive batteries according to claim 1, characterized in that, The bottom end of the male connector (14) is provided with a compression ring (20), the inside of the female connector (13) is provided with a sealing inner sleeve (21), the inside of the sealing inner sleeve (21) is movably connected with a movable sealing ring (22), and the bottom of the movable sealing ring (22) is provided with a sealing spring (23).

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