Battery with electrolyte monitoring function

Abstract

The utility model relates to the technical field of battery structures, and provides a battery with an electrolyte monitoring function, which comprises a shell, a top cover, a U-shaped pipe and a liquid level sensor, the top cover is fixedly arranged on the shell, and a through hole is formed in the top cover; the U-shaped pipe penetrates through the penetrating hole and is fixed to the penetrating hole in a sealed mode. The liquid level sensor comprises a wire and a liquid level probe, and the wire penetrates through the U-shaped pipe and is fixed to the U-shaped pipe in a sealed mode. The liquid level probe is electrically connected to one end of the wire and located in the shell. The lead penetrating through the cover plate is arranged, the liquid level probe is arranged at the end, located in the shell, of the lead, the lead is connected with a detection mechanism outside the battery, real-time monitoring on electrolyte in the battery can be achieved, the arrangement direction of the lead can be guided by arranging the U-shaped pipe, and the battery can be conveniently and rapidly detected. And collision and interference between the lead and other components are avoided, so that the use safety of the liquid level sensor is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery structure technology, and in particular to a battery with an electrolyte monitoring function. Background Technology

[0002] With the rapid development of the new energy industry, the cycle life of batteries has received increasing attention from the industry. During the cycle, the electrolyte is continuously consumed and reduced. By the end of the cycle, the electrolyte has dried up, the ion conduction network of the cell is damaged, and the internal resistance increases sharply, which worsens the cycle. Therefore, it is essential to check the remaining amount of electrolyte inside the battery.

[0003] Chinese patent application CN107508007A discloses an intelligent traction battery, comprising: a positive electrode group, a negative electrode group, an intelligent module, a low-level electrolyte line, a high-level electrolyte line, a negative electrode line, and a positive electrode line. The intelligent module is integrally mounted on the negative electrode post of the negative electrode group and connected to the busbar of the negative electrode group via the negative electrode line. It is also connected to the busbar of the positive electrode group via the positive electrode line. The intelligent module measures and records the battery voltage through the positive and negative electrode lines. The intelligent module includes a current transformer to measure and record data during the charging and discharging process. Both the low-level and high-level electrolyte lines are connected to the intelligent module for real-time monitoring and recording of the battery's electrolyte level. This intelligent traction battery can perform targeted maintenance and upkeep based on monitoring results, effectively improving the battery's lifespan.

[0004] In the above technical solution, in order to detect the electrolyte level inside the battery, an intelligent module, a low level line, and a high level line are set up. The intelligent module is equipped with a clock device, a storage device, and a wireless transmission device. However, placing the intelligent module inside the battery requires not only a sealing structure to avoid contact with the electrolyte, but also a corresponding overheat protection structure, resulting in a complex device structure and a relatively high failure rate. Utility Model Content

[0005] In view of this, the present invention proposes a battery with electrolyte monitoring function, which simplifies the structure of the device while enabling the detection of the electrolyte inside the battery.

[0006] The technical solution of this utility model is achieved as follows: This utility model provides a battery with an electrolyte monitoring function, including a shell, a top cover, a U-shaped tube, and a liquid level sensor, wherein,

[0007] The top cover is fixedly mounted on the outer shell, and a perforation is provided inside it;

[0008] The U-shaped tube passes through the perforation and is sealed and fixed thereto;

[0009] The liquid level sensor includes a wire and a liquid level probe. The wire passes through the U-shaped tube and is sealed and fixed thereto. The liquid level probe is electrically connected to one end of the wire and is located inside the housing.

[0010] Based on the above technical solutions, preferably, a sealing cap is also included. The top cover has an injection hole, and the sealing cap is detachably fixed to the top cover to seal the injection hole.

[0011] More preferably, the top cover includes a cover plate and a screw cylinder, wherein,

[0012] The cover plate is fixedly mounted on the outer shell, and the injection hole is opened on the cover plate;

[0013] The screw barrel is fixedly mounted on the cover plate, and the injection hole is located inside the screw barrel. The sealing cap is connected inside the screw barrel by a threaded connection.

[0014] More preferably, the sealing cap includes a stud and a plug plate, wherein,

[0015] The stud is connected to the screw barrel by a threaded connection;

[0016] The blocking plate is fixedly mounted on the stud and abuts against the end of the screw cylinder away from the cover plate.

[0017] More preferably, it also includes an explosion-proof valve, which is fixedly installed in the middle position of the top cover.

[0018] More preferably, the perforation and the injection hole are arranged opposite to each other on both sides of the explosion-proof valve.

[0019] Based on the above technical solutions, preferably, the solution also includes a chip, which is fixedly mounted on the top cover and electrically connected to the end of the wire away from the liquid level probe.

[0020] Based on the above technical solutions, preferably, multiple liquid level probes are provided, and the multiple liquid level probes are evenly distributed along the height direction of the outer shell.

[0021] More preferably, the liquid level probe is fixedly mounted on the inner wall of the housing.

[0022] More preferably, the screw barrel and the injection hole are coaxially arranged, and their inner diameters are equal.

[0023] The battery with electrolyte monitoring function of this utility model has the following advantages over the prior art:

[0024] (1) By setting a wire that passes through the cover plate and setting the liquid level probe at one end of the wire inside the shell, the connection between the wire and the external detection mechanism of the battery can realize real-time monitoring of the electrolyte inside the battery. By setting a U-shaped tube, the direction of the wire can be guided to avoid collision and interference between the wire and other components, thereby improving the safety of the liquid level sensor.

[0025] (2) By setting up an injection hole and a sealing cap, the electrolyte lost inside the battery can be replenished, thereby improving the cycle life of the battery.

[0026] (3) By setting multiple liquid level probes and distributing them evenly along the height of the battery, the electrolyte level at different locations can be detected, thereby improving the comprehensiveness of the liquid level sensor. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a perspective view of a battery with electrolyte monitoring function according to the present invention;

[0029] Figure 2 This is a cross-sectional view of the U-shaped tube in a battery with electrolyte monitoring function according to this utility model;

[0030] Figure 3 This is an exploded view of the sealing cap of a battery with electrolyte monitoring function according to this utility model;

[0031] Figure 4 This is a cross-sectional view of the liquid level sensor in a battery with electrolyte monitoring function according to the present invention.

[0032] The components are: 1. Outer shell; 2. Top cover; 21. Cover plate; 22. Screw barrel; 201. Perforation; 202. Injection hole; 3. U-tube; 4. Liquid level sensor; 41. Wire; 42. Liquid level probe; 5. Sealing cover; 51. Stud; 52. Blocking plate; 6. Explosion-proof valve; 7. Chip. Detailed Implementation

[0033] The technical solutions of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0034] like Figure 1-4 As shown, a battery with electrolyte monitoring function according to this utility model includes a shell 1, a top cover 2, a U-shaped tube 3, a liquid level sensor 4, a sealing cover 5, an explosion-proof valve 6, and a chip 7.

[0035] The outer casing 1 is used to store the winding core and electrolyte.

[0036] The top cover 2 is used to seal the outer shell 1 and form a sealed cavity to prevent electrolyte from overflowing. The top cover 2 is fixedly installed on the outer shell 1 and has a perforation 201 inside.

[0037] The U-shaped tube 3 is used to guide the placement direction of the liquid level sensor 4. The U-shaped tube 3 passes through the through hole 201 and is sealed and fixed thereto.

[0038] The liquid level sensor 4 is used to detect whether the electrolyte level inside the casing 1 has reached a specified position. The liquid level sensor 4 includes a wire 41 and a liquid level probe 42. The wire 41 passes through the U-shaped tube 3 and is sealed and fixed thereto. Preferably, sealant is used to seal and fix the wire 41 to the U-shaped tube 3 and the U-shaped tube 3 to the perforation 201. The liquid level probe 42 is electrically connected to one end of the wire 41 and is located inside the casing 1. During battery use, the end of the wire 41 outside the casing 1 can be connected to the detection mechanism. When the electrolyte level inside the casing 1 is higher or lower than the position of the liquid level probe 42, a corresponding signal is transmitted to the detection mechanism through the wire 41, thereby monitoring the remaining electrolyte level inside the battery in real time. Simultaneously, if... Figure 2 As shown, by utilizing the guiding effect of the U-shaped tube 3 on the wire 41, the wire 41 can be laid close to the top cover 2 near the position of the U-shaped tube 3, so as to avoid collision and interference with the internal core of the battery or the external structure of the battery, thereby ensuring the safe use of the liquid level sensor 4; wherein, the detection principle and structure of the liquid level sensor 4 and the detection mechanism are existing technologies, and the liquid level sensor 4 preferably adopts an optical fiber sensor.

[0039] The sealing cap 5 is used to replenish the electrolyte inside the battery. The top cover 2 has an injection hole 202. The sealing cap 5 is detachably fixed to the top cover 2 and seals the injection hole 202. When the remaining electrolyte inside the battery is low, the sealing cap 5 can be opened to replenish the electrolyte into the outer casing 1 through the injection hole 202. After the electrolyte is replenished, the sealing cap 5 can be fixed to the top cover 2 to seal the injection hole 202.

[0040] like Figure 3 As shown, the top cover 2 includes a cover plate 21 and a screw cylinder 22. The cover plate 21 is fixedly mounted on the outer shell 1, and the injection hole 202 is opened on the cover plate 21. The screw cylinder 22 is fixedly mounted on the cover plate 21, and the injection hole 202 is located inside the screw cylinder 22. The sealing cover 5 is connected to the screw cylinder 22 by a threaded connection. The setting of the screw cylinder 22 increases the structural strength of the top cover 2 at the position of the injection hole 202, thereby ensuring the firmness of the fixing of the sealing cover 5 and the top cover 2. Preferably, the screw cylinder 22 and the injection hole 202 are coaxially arranged, and their inner diameters are equal.

[0041] like Figure 3 As shown, the sealing cover 5 includes a stud 51 and a plug plate 52. The stud 51 is connected to the screw cylinder 22 by a threaded connection. The plug plate 52 is fixedly disposed on the stud 51 and abuts against the end of the screw cylinder 22 away from the cover plate 21. When the stud 51 is screwed into the screw cylinder 22, the two form a sealing structure. At this time, the plug plate 52 also abuts against the screw cylinder 22, thus forming another sealing structure. The two sealing structures help to improve the sealing effect between the sealing cover 5 and the top cover 2.

[0042] The explosion-proof valve 6 is used to discharge excess gas inside the battery to prevent it from exploding. The explosion-proof valve 6 is preferably fixedly positioned in the middle of the top cover 2. Figure 1 As shown, the perforation 201 and the injection hole 202 are arranged opposite each other on both sides of the explosion-proof valve 6. They are preferably arranged symmetrically about the center line of the explosion-proof valve 6, thereby improving the structural balance of the battery.

[0043] Chip 7 is used to process and transmit signals emitted by liquid level probe 42. Chip 7 is fixedly mounted on top cover 2 and electrically connected to the end of wire 41 away from liquid level probe 42. When the electrolyte level inside the outer casing 1 is higher or lower than liquid level probe 42, the corresponding signal can be transmitted to chip 7 and then transmitted outward through chip 7. Its structure and principle are existing technologies.

[0044] like Figure 4 As shown, multiple liquid level probes 42 are preferably provided, and the multiple liquid level probes 42 are evenly distributed along the height direction of the housing 1, thereby improving the detection comprehensiveness of the liquid level sensor 4; in order to avoid the liquid level probes 42 from shaking or shifting, the liquid level probes 42 are preferably fixedly installed on the inner wall of the housing 1.

[0045] The working principle of a battery with electrolyte monitoring function according to this invention is as follows:

[0046] When the electrolyte level inside the casing 1 is higher than the level probe 42, a signal indicating that the battery is operating safely is transmitted to the operator via the wire 41 and the chip 7. As the battery is used cyclically, the electrolyte inside is depleted. When the electrolyte level inside the casing 1 is lower than the level probe 42, a signal indicating that the battery is not operating safely is transmitted to the operator via the wire 41 and the chip 7. At this time, the operator can add electrolyte to the inside of the casing 1 by removing the sealing cap 5 to allow the battery to operate normally.

[0047] 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, improvements, etc., 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 battery with an electrolyte monitoring function, characterized in that: It includes a housing (1), a top cover (2), a U-shaped tube (3), and a liquid level sensor (4), wherein, The top cover (2) is fixedly mounted on the outer shell (1), and a through hole (201) is provided inside it; The U-shaped tube (3) passes through the perforation (201) and is sealed and fixed thereto; The liquid level sensor (4) includes a wire (41) and a liquid level probe (42). The wire (41) passes through the U-shaped tube (3) and is sealed and fixed thereto. The liquid level probe (42) is electrically connected to one end of the wire (41) and is located inside the housing (1).

2. A battery with electrolyte monitoring function as described in claim 1, characterized in that: It also includes a sealing cap (5), on which an injection hole (202) is provided. The sealing cap (5) is detachably fixed on the top cover (2) and seals the injection hole (202).

3. A battery with electrolyte monitoring function as described in claim 2, characterized in that: The top cover (2) includes a cover plate (21) and a screw cylinder (22), wherein, The cover plate (21) is fixedly mounted on the outer shell (1), and the injection hole (202) is opened on the cover plate (21); The screw barrel (22) is fixedly mounted on the cover plate (21), and the injection hole (202) is located inside the screw barrel (22). The sealing cap (5) is connected inside the screw barrel (22) by threaded connection.

4. A battery with electrolyte monitoring function as described in claim 3, characterized in that: The sealing cap (5) includes a stud (51) and a plug (52), wherein, The stud (51) is connected to the screw barrel (22) by a threaded connection; The blocking plate (52) is fixedly mounted on the stud (51) and abuts against the end of the screw cylinder (22) away from the cover plate (21).

5. A battery with electrolyte monitoring function as described in claim 2, characterized in that: It also includes an explosion-proof valve (6), which is fixedly installed in the middle position of the top cover (2).

6. A battery with electrolyte monitoring function as described in claim 5, characterized in that: The perforation (201) and the injection hole (202) are arranged opposite to each other on both sides of the explosion-proof valve (6).

7. A battery with electrolyte monitoring function as described in claim 1, characterized in that: It also includes a chip (7), which is fixedly disposed on the top cover (2) and electrically connected to one end of the wire (41) away from the liquid level probe (42).

8. A battery with electrolyte monitoring function as described in claim 1, characterized in that: Multiple liquid level probes (42) are provided, and the multiple liquid level probes (42) are evenly distributed along the height direction of the outer shell (1).

9. A battery with electrolyte monitoring function as described in claim 8, characterized in that: The liquid level probe (42) is fixedly installed on the inner wall of the outer casing (1).

10. A battery with electrolyte monitoring function as described in claim 3, characterized in that: The screw barrel (22) and the injection hole (202) are coaxially arranged, and their inner diameters are equal.

Images