Composite monitoring module

Abstract

The composite monitoring module comprises a cylinder body, a connector arranged above the cylinder body, an opening formed in the side wall of the cylinder body and a transparent protective cover, and a liquid level sensor, a temperature sensor, a density sensor and a voltage detection module are arranged in the protective cover; the liquid level sensor comprises a transparent corrosion-resistant plastic shell, a detection circuit and a plurality of liquid level detection points, the temperature sensor is a semiconductor type temperature sensor, the temperature measurement probe is installed at the bottom of the side face of the cylinder body, and the density sensor comprises a prism arranged at an opening of the side wall, a density detection face and a surfacing mat. The voltage detection module comprises a voltage measurement circuit and a measurement line; the functions of detecting the voltage, density, temperature and liquid level of the marine lead-acid storage battery are integrated in the same cylinder, and detection of all data can be completed only through one installation interface.

Description

Technical Field

[0001] This invention belongs to the field of marine battery parameter detection technology, specifically relating to a composite monitoring module. Background Technology

[0002] To monitor parameters such as voltage, density, temperature, and liquid level of marine lead-acid batteries, existing monitoring modules based on photoelectric measurement principles are usually divided into several components for separate measurement. The installation of these monitoring modules will occupy the battery's ventilation openings and is prone to interference with the battery's cables and busbars.

[0003] In this situation, an integrated composite monitoring module can effectively solve this problem. Summary of the Invention

[0004] The purpose of this invention is to design an integrated composite monitoring module for monitoring parameters such as voltage, density, temperature, and liquid level of marine batteries.

[0005] The technical solution adopted by this invention patent to solve its technical problem is as follows: a composite monitoring module, including a cylinder, a connector adapted to the battery mounting interface and located on the top of the cylinder, an opening on the side wall of the cylinder, and a transparent protective cover installed at the opening by a sealing ring. The protective cover contains a liquid level sensor, a temperature sensor, a density sensor, and a voltage detection module. The liquid level sensor measures the liquid level based on photoelectric principles and includes a transparent corrosion-resistant plastic shell, a detection circuit inside the shell, and multiple liquid level detection points equidistantly installed on the detection circuit. The temperature sensor is a semiconductor temperature sensor, with its temperature probe installed at the bottom of the side of the cylinder. The density sensor includes a prism located at the opening on the side wall, a density detection surface, and a surface felt installed on the density detection surface. The prism's side surface contacts the electrolyte, and the density value of the electrolyte is calculated by detecting the change in the refractive index of the electrolyte through this contact surface. The voltage detection module includes a voltage measurement circuit located inside the connector and a measurement line led out from the connector.

[0006] The composite monitoring module has a groove located above the density detection surface inside its cylinder, and the surface felt is fixed in the groove by a pressure plate.

[0007] The composite monitoring module has its detection circuit integrated on a long strip circuit board, and the liquid level detection point includes 8 liquid level detection units from bottom to top.

[0008] The composite monitoring module described above uses polyvinyl chloride as its cylindrical material, and the entire composite monitoring module adopts a fully sealed structure.

[0009] The aforementioned composite monitoring module has its density sensor and liquid level sensor spliced ​​together on the cylinder, with the splicing surfaces sealed by a sealing ring.

[0010] The composite monitoring module has a surface felt made of a hydrophilic filter membrane. This membrane has good anti-bubble interference performance, good liquid exchange capacity, extremely stable physical and chemical properties, and is non-toxic and harmless to the human body.

[0011] The beneficial effects of this invention are as follows: The composite monitoring module of this invention can be installed on the battery mounting interface of an M50 battery. The module used to detect various parameters of marine lead-acid batteries has the following advantages: all data can be detected with only one mounting interface, no additional liquid level or temperature sensors are required, it will not interfere with any pipes, cables, busbars, flatcars, etc. in the battery compartment, it does not occupy the original ventilation holes of the battery, does not affect the original ventilation capacity of the battery, does not reduce the convenience of liquid filling, and does not affect the insulation of the battery pack. Attached Figure Description

[0012] Figure 1 This is an overall external view of the present invention;

[0013] Figure 2 This is an exploded three-dimensional structural view of the present invention;

[0014] Figure 3 This is a schematic diagram of the density sensor portion of the present invention;

[0015] Figure 4 This is an overall external view of the cylindrical body of the present invention.

[0016] The reference numerals for each figure are as follows: 1—cylinder, 11—threaded part, 2—connector, 3—sealing ring, 4—protective cover, 5—surface felt, 6—liquid level sensor, 7—temperature sensor, 71—temperature probe, 8—density sensor, 81—density detection surface, 82—prism, 9—pressure plate, 10—measuring line. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0018] like Figure 1 , Figure 2As shown, this invention discloses a composite monitoring module that miniaturizes and integrates the liquid level sensor, employing a cylindrical, fully sealed structure. It also rationally integrates a temperature sensor 7 and a liquid level sensor 6. The module includes a polyvinyl chloride (PVC) cylinder 1, a connector 2 adapted to a battery mounting interface located on the top of the cylinder 1, an opening on the side wall of the cylinder 1, and a transparent protective cover 4 installed at the opening via a sealing ring 3. The protective cover 4 has a mesh, allowing both light and liquid to enter. The liquid level sensor 6, temperature sensor 7, density sensor 8, and voltage detection module are respectively housed within the protective cover 4. The density and liquid level measurements are based on photoelectric measurement principles. A threaded portion 11 is provided at the top of the cylinder 1 for screwing onto the corresponding interface of the battery.

[0019] The liquid level sensor 6 measures the liquid level based on the photoelectric principle. It includes a transparent and corrosion-resistant plastic shell, a detection circuit installed inside the shell, and multiple liquid level detection points installed at equal intervals on the detection circuit. The detection circuit is integrated on a long strip circuit board with a liquid level detection unit set every 10 mm from 40 mm to 110 mm above the battery protection plate, for a total of 8 liquid level detection points. This facilitates on-site liquid level indication when water is added. It also provides a low liquid level alarm when the liquid level is below 40 mm and a high liquid level alarm when the liquid level is above 110 mm.

[0020] The liquid level sensor 6 has a smooth housing and is placed vertically, making it difficult for liquid and impurities in the electrolyte to adhere. It can be used in batteries for a long time without maintenance, and its measurement accuracy is not affected by the environment.

[0021] The temperature sensor 7 is a semiconductor temperature sensor, and its temperature probe 71 is installed on the bottom side of the cylinder 1. The temperature measurement uses a semiconductor temperature sensor. To ensure that the temperature measurement has good tracking performance, the probe is installed on the bottom side of the composite monitoring module cylinder and sealed together with the liquid level sensor 6 in a corrosion-resistant shell.

[0022] The density sensor 8 includes a prism 82 disposed at an opening in the side wall, a density detection surface 81, and a surface felt 5 mounted on the density detection surface 81. The surface felt 5 is a hydrophilic filter membrane. This method can ensure that the detection surface can reflect the density in a timely manner, while also isolating interference from small air bubbles, impurities, and oil stains. A groove is opened in the cylinder 1 above the density detection surface 81. The surface felt 5 is fixed in the groove by a pressure plate 9. The groove is used to fix one end of the pressure plate 9 on the surface felt 5. An M2.5 screw hole is opened in the cylinder below the density detection surface 81 for fixing the other end of the pressure plate 9 on the surface felt 5. The surface felt 5 is installed between the pressure plate 9 and the density detection surface 81 and is fixed by the downward pressure of the pressure plate 9. The electrolyte comes into contact with the surface felt 5 through the hollow part of the pressure plate 9.

[0023] The side surface of prism 82 is in contact with the electrolyte. The change in the refractive index of the electrolyte is detected through this contact surface, thereby calculating the density value of the electrolyte. The measurement optical path is realized through optical elements and is completely enclosed inside the sensor. The optical path can be guaranteed to be stable and controllable, and is not affected by the battery status or the complex and ever-changing environment in the liquid. The density measurement accuracy does not need to be calibrated for life.

[0024] The voltage detection module includes a voltage measurement circuit disposed in the connector 2 and a measurement line 10 led out from the connector 2.

[0025] The integrated design of the composite monitoring module: The composite monitoring module adopts a fully sealed structure with a cylindrical outer shell made of polyvinyl chloride. The voltage measurement circuit is installed in the upper half (above the battery cover), while the optical path structure of the density sensor 8 based on the photoelectric measurement principle and the liquid level sensor 6 are installed in the lower half (below the battery cover). The density sensor 8 and the liquid level sensor 6 are joined side to side on the cylinder 1, and the joint surface is sealed by a sealing ring 3. The two parts are then fastened with acid-resistant screws to form the composite monitoring module.

[0026] The composite monitoring module features an anti-interference design against electrolyte impurities: The photoelectric density sensor 8 has the advantage of being unaffected by liquid flow, tilting, or shaking, enabling accurate measurement of electrolyte density even in harsh environments. However, when a large number of impurities such as bubbles and oil adhere to the density detection surface 81, it can still affect the accuracy of density measurement. The module employs a dual protection measure of a protective cover 4 and a surface felt 5. This maintains good liquid exchange performance, allowing the sensor to respond to changes in electrolyte density at any time, while also filtering out impurities to ensure long-term accuracy of density measurements.

[0027] like Figure 3 and Figure 4 As shown, the protective cover 4 is installed on the side of the cylinder 1, with multiple through holes on the side. This effectively prevents the impact of the stirring gas while ensuring the density exchange of the liquid from the side. Currently, the battery level is indicated on-site by LED indicator lights through color and flashing status. Operators can determine the current liquid level and add water based on the indicator light status.

[0028] The above embodiments are merely illustrative of the principles and effects of the present invention, as well as some of the application examples. For those skilled in the art, various modifications and improvements can be made without departing from the inventive concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. A composite monitoring module, characterized in that: The device includes a cylinder (1), a connector (2) located above the cylinder (1), an opening on the side wall of the cylinder (1), and a protective cover (4) installed at the opening via a sealing ring (3). The protective cover (4) contains a liquid level sensor (6), a temperature sensor (7), a density sensor (8), and a voltage detection module. The liquid level sensor (6) includes a transparent shell, a detection circuit located inside the shell, and multiple liquid level detection points installed at equal intervals on the detection circuit. The temperature sensor (7) is a semiconductor temperature sensor, and its temperature probe (71) is installed at the bottom of the side of the cylinder (1). The density sensor (8) includes a prism (82) located at the opening on the side wall, a density detection surface (81), and a surface felt (5) installed on the density detection surface (81). The voltage detection module includes a voltage measurement circuit located inside the connector (2) and a measurement line (10) led out from the connector (2).

2. The composite monitoring module according to claim 1, characterized in that, The cylinder (1) has a groove located above the density detection surface (81) and the surface felt (5) is fixed in the groove by a pressure plate (9).

3. The composite monitoring module according to claim 1, characterized in that, The detection circuit is integrated on a long strip circuit board, and the liquid level detection point includes 8 liquid level detection units from bottom to top.

4. A composite monitoring module according to claim 1, 2, or 3, characterized in that, The cylinder (1) is made of polyvinyl chloride.

5. A composite monitoring module according to claim 4, characterized in that, The density sensor (8) and the liquid level sensor (6) are spliced ​​on the cylinder (1) from left to right and sealed by the sealing ring (3).

6. A composite monitoring module according to claim 5, characterized in that, The surface felt (5) is a hydrophilic filter membrane.

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