Liquid level detection and liquid supplementing device of storage battery

Abstract

The invention discloses a liquid level detection and liquid supplementing device of a storage battery, which relates to the technical field of batteries and comprises a detection loop, a liquid supplementing pump control loop, a liquid supplementing pump and a power supply, the detection loop comprises a detection module and a liquid level indication module; the detection module is inserted into a filling port of the storage battery to detect the liquid level of a battery solution of the storage battery; the liquid level indication module is used for displaying the liquid level of the battery solution according to the detection result of the detection module; the liquid supplementing pump control loop is used for controlling the liquid supplementing pump to supply water to the filling port through the first end of the liquid supplementing pipe; the power supply supplies power. The liquid level of the battery solution can be directly detected from the filling port of the storage battery through the detection loop, and compared with visual detection, the shielded storage battery can be detected, so that when a plurality of storage batteries are installed side by side, even if the storage batteries in the rear row are shielded, the liquid level can be efficiently and accurately detected; water can be supplied to the filling port in time through the liquid supplementing pump control loop, the liquid supplementing pump and the power source, and efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of batteries, and particularly to a device for detecting the liquid level and replenishing liquid of a storage battery. Background Art

[0002] During the charging and discharging process of a storage battery, the water in the battery solution will be consumed to some extent. It is necessary to regularly check the liquid level of the battery solution. When the liquid level is lower than the minimum allowable value, distilled water needs to be replenished in time to avoid damage to the storage battery. To facilitate the inspection of the liquid level of the battery solution, the storage battery usually marks the liquid level range during normal operation on its semi-transparent plastic shell, and the liquid level of the battery solution can be intuitively seen from the side of the storage battery.

[0003] The voltage of a single storage battery is generally low. When a UPS (Uninterruptible Power Supply) uses storage batteries, a large number of batteries are required. For example, a 10KVA-capacity UPS may require more than two hundred storage batteries. If visual inspection of the liquid level of each storage battery is to be achieved, the mounting rack of the storage battery must adopt a stepped type, and the position of the storage batteries installed in the back row is higher than that in the front row, so that the indication of the battery solution is not blocked by the front row. Such an installation method will require a very large installation space. If the stepped installation is not adopted, the space required for the storage batteries will be greatly reduced, but this will result in the liquid level of only the outermost storage battery being visible, and the liquid levels of the storage batteries in the back row cannot be visually inspected. In addition, the transparency of the outer shell of some storage batteries is low, and with aging, it is difficult to observe the specific liquid level of the battery solution inside the storage battery even if the outer shell is not blocked. The above problems affect the detection and maintenance of storage batteries. Summary of the Invention

[0004] The main purpose of the embodiments of this application is to propose a device for detecting the liquid level and replenishing liquid of a storage battery, which can achieve liquid level inspection and water replenishment without removing the battery, improve the accuracy and efficiency of liquid level detection of the storage battery, and improve the efficiency of liquid replenishment.

[0005] To achieve the above purpose, on the one hand, an embodiment of this application proposes a device for detecting the liquid level and replenishing liquid of a storage battery, and the device includes a detection circuit, a liquid replenishing pump control circuit, a liquid replenishing pump, and a power supply;

[0006] Among them, the detection circuit includes a detection module and a liquid level indication module; the detection module is used to insert into the filling port of the storage battery to detect the liquid level of the battery solution of the storage battery; the liquid level indication module is used to display the liquid level of the battery solution according to the detection result of the detection module;

[0007] The liquid replenishing pump control circuit is used to control the liquid replenishing pump to supply distilled water to the filling port of the storage battery through the first end of the liquid replenishing pipe;

[0008] The power supply is used for power supply.

[0009] In some embodiments, the detection circuit includes a first circuit and a second circuit; the detection module includes a first electrode and a second electrode; the liquid level indication module includes a first indicator light and a second indicator light;

[0010] Wherein, the first electrode is disposed at the high liquid level limit of the storage battery, and the second electrode is disposed at the low liquid level limit of the storage battery;

[0011] The first indicator light and the optocoupler relay in parallel are disposed on the first circuit; the second indicator light is disposed on the second circuit;

[0012] The first electrode is connected to the first indicator light and the optocoupler relay respectively through the first circuit; when the liquid level of the battery solution in the storage battery reaches the high liquid level limit, the first circuit is conducted through the first electrode and the battery solution, so that the first indicator light is turned on, and the optocoupler relay controls the liquid filling pump to stop working;

[0013] The second electrode is connected to the second indicator light through the second circuit; when the liquid level of the battery solution in the storage battery reaches the low liquid level limit, the second circuit is conducted through the second electrode and the battery solution, so that the second indicator light is turned on.

[0014] In some embodiments, the optocoupler relay is used to control a intermediate relay, and the normally open contact of the intermediate relay is connected in series in the control circuit of the liquid filling pump; when the liquid level of the battery solution in the storage battery reaches the high liquid level limit, the optocoupler relay is powered on, the normally closed contact is opened, and then the intermediate relay is powered off and the control circuit of the liquid filling pump is disconnected, and finally the liquid filling pump stops working.

[0015] In some embodiments, the device further includes a protective cover;

[0016] The protective cover is used for being installed on the filling port of the storage battery;

[0017] At least three openings are provided on the protective cover, and the three openings are respectively used for inserting the detection module, inserting the liquid filling pipe and ventilation.

[0018] In some embodiments, both the detection module and the liquid filling pipe are made of flexible materials and are both wrapped with elastic insulating materials.

[0019] In some embodiments, a start button and a stop button are provided on the control circuit of the liquid filling pump;

[0020] When the refill pump control circuit detects that the start button is pressed, the refill pump is controlled to supply water to the battery through the refill pipe;

[0021] When the control circuit of the fluid infusion pump detects that the stop button is pressed, the fluid infusion pump is controlled to stop working.

[0022] In some embodiments, a joint is provided at the second end of the infusion tube, and the joint is used to be connected to the water outlet of the infusion pump.

[0023] In some embodiments, the detection circuit and the infusion pump control circuit are integrated in a mobile control box.

[0024] In some embodiments, the battery solution of the battery includes a potassium hydroxide solution or a sulfuric acid solution.

[0025] In some embodiments, the battery includes at least one of a nickel-cadmium battery or a lead-acid battery.

[0026] The embodiments of the present application include at least the following beneficial effects:

[0027] The device of the present application includes a detection circuit, a refilling pump control circuit, a refilling pump and a power supply; wherein the detection circuit includes a detection module and a liquid level indication module; the detection module is used to be inserted into the filling port of the battery to detect the liquid level of the battery solution of the battery; the liquid level indication module is used to display the liquid level of the battery solution according to the detection result of the detection module; the refilling pump control circuit is used to control the refilling pump to supply distilled water to the filling port of the battery through the first end of the refilling tube; the power supply is used to supply power. The present application can directly detect the liquid level of the battery solution from the filling port of the battery by inserting the detection circuit into the filling port of the battery, thereby realizing accurate liquid level detection, and compared with the visual detection of the prior art, the present application can detect the obscured battery, and then when multiple batteries are installed side by side, even if the rear row of batteries is obscured, the liquid level can be detected efficiently and accurately, solving the technical problem that the prior art cannot simultaneously take into account the saving of installation space and the detection of liquid level; when refilling is needed, the present application can timely supply distilled water to the filling port of the battery through the refilling pump control circuit, the refilling pump and the power supply, without removing the battery, thereby improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1It is an exemplary structural diagram of a device for detecting the liquid level and replenishing liquid of a nickel-cadmium storage battery provided by an embodiment of the present application. Detailed implementation manners

[0030] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application 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 only used to explain the present application and are not used to limit the present application. When the following description refers to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the embodiments of the present application. They are only examples of devices and methods consistent with some aspects of the embodiments of the present application detailed in the appended claims.

[0031] It can be understood that the terms "first", "second", etc. used in the present application may be used herein to describe various concepts, but unless otherwise specified, these concepts are not limited by these terms. These terms are only used to distinguish one concept from another. For example, without departing from the scope of the embodiments of the present application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the words "if", "when" as used herein may be interpreted as "when...", "while...", or "in response to determining".

[0032] The terms "at least one", "a plurality", "each", "any one", etc. used in the present application, at least one includes one, two or more, a plurality includes two or more, each refers to each of the corresponding plurality, and any one refers to any one of the plurality.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present application belongs. The terms used herein are only for the purpose of describing the embodiments of the present application and are not intended to limit the present application.

[0034] An embodiment of the present application provides a device for detecting the liquid level and replenishing liquid of a storage battery. The device includes a detection circuit, a liquid replenishing pump control circuit, a liquid replenishing pump and a power source;

[0035] Wherein, the detection circuit includes a detection module and a liquid level indication module; the detection module is used to be inserted into the filling port of the storage battery to detect the liquid level of the battery solution of the storage battery; the liquid level indication module is used to display the liquid level of the battery solution according to the detection result of the detection module;

[0036] The liquid replenishing pump control circuit is used to control the liquid replenishing pump to supply distilled water to the filling port of the storage battery through the first end of the liquid replenishing pipe;

[0037] The power supply is used for power supply.

[0038] Further, the detection circuit includes a first circuit and a second circuit; the detection module includes a first electrode and a second electrode; the liquid level indication module includes a first indicator light and a second indicator light;

[0039] Wherein, the first electrode is arranged at the high liquid level limit of the storage battery, and the second electrode is arranged at the low liquid level limit of the storage battery;

[0040] The first indicator light and the opto-coupler relay in parallel are arranged on the first circuit; the second indicator light is arranged on the second circuit;

[0041] The first electrode is connected to the first indicator light and the opto-coupler relay respectively through the first circuit; when the liquid level of the battery solution in the storage battery reaches the high liquid level limit, the first circuit is conducted through the first electrode and the battery solution, so that the first indicator light lights up, and the opto-coupler relay controls the liquid replenishing pump to stop working;

[0042] The second electrode is connected to the second indicator light through the second circuit; when the liquid level of the battery solution in the storage battery reaches the low liquid level limit, the second circuit is conducted through the second electrode and the battery solution, so that the second indicator light lights up.

[0043] Furthermore, the opto-coupler relay is used to control a intermediate relay, and the normally open contact of the intermediate relay is connected in series in the control circuit of the liquid replenishing pump; when the liquid level of the battery solution in the storage battery reaches the high liquid level limit, the opto-coupler relay is energized, the normally closed contact is opened, and then the intermediate relay is de-energized and the control circuit of the liquid replenishing pump is disconnected, and finally the liquid replenishing pump stops working.

[0044] As an optional implementation manner, the device further includes a protective cover;

[0045] The protective cover is used to be installed on the filling port of the storage battery;

[0046] At least three openings are arranged on the protective cover, and the three openings are respectively used for inserting the detection module, inserting the liquid replenishing pipe and ventilation.

[0047] As an optional implementation manner, both the detection module and the liquid replenishing pipe are made of flexible materials and are wrapped with elastic insulating materials.

[0048] As an optional implementation manner, a start button and a stop button are arranged on the control circuit of the liquid replenishing pump;

[0049] When the liquid filling pump control circuit detects that the start button is pressed, it controls the liquid filling pump to supply water to the storage battery through the liquid filling pipe;

[0050] When the liquid filling pump control circuit detects that the stop button is pressed, it controls the liquid filling pump to stop working.

[0051] As an optional implementation manner, a connector is provided at the second end of the liquid filling pipe, and the connector is used to connect to the water outlet of the liquid filling pump.

[0052] As an optional implementation manner, the detection circuit and the liquid filling pump control circuit are integrated in a mobile control box.

[0053] As an optional implementation manner, the battery solution of the storage battery includes potassium hydroxide solution or sulfuric acid solution.

[0054] As an optional implementation manner, the storage battery includes at least one of nickel-cadmium storage battery and lead-acid storage battery.

[0055] Exemplarily, the battery solution in the nickel-cadmium storage battery can be potassium hydroxide solution, and the battery solution in the lead-acid storage battery can be sulfuric acid solution.

[0056] Next, the solutions of the embodiments of the present application will be introduced and described in detail in combination with specific application examples.

[0057] First, the technical problems to be solved in this embodiment are introduced.

[0058] Due to good safety, long service life, and low requirements for installation locations, nickel-cadmium storage batteries are widely used in fields such as ships, high-speed rails, and aviation. The nickel-cadmium storage battery uses potassium hydroxide solution as the battery solution. During the charging and discharging process of the storage battery, the water in the battery solution will be consumed to some extent. It is necessary to regularly check the situation of the battery solution. When the liquid level is lower than the minimum allowable value, it is necessary to replenish distilled water in time to avoid battery damage. In order to facilitate the inspection of the battery solution level, nickel-cadmium batteries usually mark the liquid level range during normal operation of the battery on their semi-transparent plastic shells, and the situation of the battery solution can be seen very intuitively from the side of the battery.

[0059] The voltage of a single nickel-cadmium battery is only 1.2V. For a UPS (Uninterruptible Power Supply) with the same capacity, when using nickel-cadmium batteries, the number of batteries required is much more than that of lead-acid batteries. A 10KVA capacity UPS requires more than two hundred nickel-cadmium batteries. If the liquid level of each battery is to be visually inspected, the battery mounting rack must adopt a stepped type, with the batteries installed in the back row higher than those in the front row, so that the battery solution indicator is not blocked by the front row. Such an installation method will require a very large installation space. For ships and high-speed trains with relatively limited space, finding a suitable space to install these batteries will become a problem. If the stepped installation is not adopted, the space required for the batteries will be greatly reduced, but only the liquid level of the outermost battery will be visible, and the liquid levels of the batteries in the back row cannot be visually inspected. In addition, from practical applications, it is found that for many brands of batteries, due to insufficient transparency of the outer shell and aging of the outer shell, it is very difficult to visually observe the liquid level inside the storage battery even if it is not blocked, which brings difficulties to the detection and maintenance of the battery.

[0060] Therefore, this embodiment provides a liquid level detection and replenishment device for a storage battery, which can detect the liquid level of the battery solution from the filling port of the battery solution at the top of the storage battery and can conveniently replenish the battery solution for the battery.

[0061] Aiming at the problem that the liquid level of the battery solution in the back row cannot be visually inspected when nickel-cadmium batteries are installed side by side, and the transparency of the battery outer shell is insufficient to visually observe the internal liquid level, this embodiment provides a liquid level detection and replenishment device for a storage battery, which can detect the liquid level of the battery solution from the filling port of the battery solution at the top of the battery and can replenish the battery solution as needed, specifically as follows:

[0062] Using the battery solution filling port at the top of the storage battery, a protective cover that can be installed on the filling port is designed. The size of the protective cover fits the filling port. There are three openings on the protective cover. The first opening installs high and low liquid level detection sensors (such as the first electrode and the second electrode). The second opening installs a liquid replenishing pipe, and the liquid replenishing pipe is connected to a distilled water filling pump (liquid replenishing pump). The third opening is for ventilation. The liquid level detection is achieved through two groups of electrodes. The installation heights of the two groups of electrodes respectively correspond to the high and low liquid level limits of the battery solution. The circuit of the electrode at the low liquid level limit (the second electrode) is connected to a green light-emitting diode (the second indicator light). The circuit of the electrode at the high liquid level limit (the first electrode) is connected to a red light-emitting diode (the first indicator light). The battery solution (potassium hydroxide) of the storage battery has good electrical conductivity. When the battery solution contacts the electrodes, the circuit of the light-emitting diode is turned on and the diode emits light. A photocoupler relay is connected in parallel with the red light-emitting diode in the circuit of the electrode at the high liquid level limit. The photocoupler relay is used to control a intermediate relay. The normally open contact of the intermediate relay is connected in series in the control circuit of the liquid replenishing pump. When the liquid level reaches the high liquid level limit, the photocoupler relay is energized, and the normally closed contact is opened to de-energize the intermediate relay, and the control circuit of the liquid replenishing pump is disconnected, and the liquid replenishing pump stops working to prevent excessive water filling from causing overflow.

[0063] Exemplarily, Figure 1 FIG. is an exemplary structural diagram of a liquid level detection and liquid replenishing device for a nickel-cadmium storage battery provided in this embodiment.

[0064] Among them, when detecting the liquid level of the battery solution, open the protective cover of the battery solution filling port, install the two groups of electrodes on the filling port. When the battery solution submerges the low-level electrode (the second electrode), the green indicator light will light up. When the liquid level submerges the high-level electrode (the first electrode), both the red and green indicator lights will light up. If neither the red light nor the green light is on, it means that the liquid level is lower than the low liquid level limit, and at this time, the battery solution needs to be replenished.

[0065] A 12Vdc liquid replenishing pump is installed on the device of this embodiment, and a start button and a stop button are configured. When the battery solution is lower than the low liquid level limit, start the liquid replenishing pump to replenish distilled water to the storage battery. When both the red and green indicator lights are lit, the liquid level has reached the maximum allowable liquid level, that is, the high liquid level limit, and the liquid replenishing pump automatically stops working. The liquid replenishing pump can also be stopped manually at any time to avoid overflow of the battery solution.

[0066] Both the two groups of electrodes and the liquid replenishing pipe are made of flexible materials and are wrapped with highly elastic insulating materials, so that liquid level detection can be achieved under the condition of limited space at the top of the battery. A quick connector is configured on the pipeline at the outlet of the liquid replenishing pump. Remove the pipeline during liquid level detection to facilitate the operation of detecting the liquid level. Only connect the pipeline to start the liquid replenishing pump to replenish the storage battery when necessary.

[0067] The detection circuit and the rehydration pump control circuit are integrated in a mobile control box. When in use, you only need to connect a 12V power supply and a rehydration pump.

[0068] The beneficial effects of this embodiment include:

[0069] 1. The liquid level of the battery solution is detected from the top of the battery through two sets of electrodes. There is no need to observe the liquid level from the side, and the battery shell does not need to be transparent. The arrangement of each battery does not need to adopt a step-by-step manner, which can save a lot of installation space. The liquid level of the battery can be detected from the top of the battery, and there is no need to observe the liquid level from the side, so that the installation of nickel-cadmium batteries is no longer limited to the step-by-step form, and can also be installed in parallel in multiple rows, which can effectively save more installation space and provide a more flexible installation method for the battery.

[0070] 2. The two sets of electrodes and the liquid filling tube are made of flexible and highly elastic materials, which can detect the liquid level even when the space on the top of the battery is limited. Even if the operating space required on the top of the battery is small, it can make the battery installation more compact and save more installation space.

[0071] 3. When it is detected that the liquid level of the battery solution does not meet the requirements, you only need to press the start button to automatically replenish the battery solution. There is no need to remove the battery from the battery circuit or perform other operations to add water. It also does not require additional operating space, and the operation is safe and convenient.

[0072] 4. Liquid level detection adopts the method of light-emitting diode plus electrode, which is simple and reliable.

[0073] The embodiments described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Those skilled in the art will appreciate that with the evolution of technology and the emergence of new application scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0074] Those skilled in the art will appreciate that the technical solutions shown in the figures do not constitute limitations on the embodiments of the present application, and may include more or fewer elements or modules than shown in the figures, or a combination of certain elements or modules, or different elements or modules.

[0075] The terms "first", "second", "third", "fourth", etc. (if any) in the description of this application and the above-mentioned drawings are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of this application described here can be implemented in an order other than those illustrated or described here. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a series of systems, products or devices do not necessarily have to be limited to the clearly listed elements or modules, but may include other elements or modules that are not clearly listed or are inherent to these systems, products or devices.

[0076] It should be understood that in this application, "at least one (item)" means one or more, and "a plurality" means two or more. "And / or" is used to describe the relationship between related objects and indicates that three relationships may exist. For example, "A and / or B" may mean: only A exists, only B exists, and both A and B exist at the same time. Among them, A and B can be singular or plural. The character " / " generally indicates that the related objects before and after are in an "or" relationship. "At least one (one) of the following" or its similar expression refers to any combination of these items, including any combination of single item (one) or plural items (ones). For example, at least one (one) of a, b, or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0077] The preferred embodiments of the embodiments of this application have been described above with reference to the drawings, but this does not limit the scope of the rights of the embodiments of this application. Any modifications, equivalent replacements, and improvements made by those skilled in the art without departing from the scope and essence of the embodiments of this application shall be within the scope of the rights of the embodiments of this application.

Claims

1. A liquid level detection and replenishment device for a storage battery, characterized in that, The device includes a detection circuit, a liquid filling pump control circuit, a liquid filling pump, and a power supply; Among them, the detection circuit includes a detection module and a liquid level indication module; the detection module is used to be inserted into the filling port of the storage battery to detect the liquid level of the battery solution of the storage battery; the liquid level indication module is used to display the liquid level of the battery solution according to the detection result of the detection module; The liquid filling pump control circuit is used to control the liquid filling pump to supply distilled water to the filling port of the storage battery through the first end of the liquid filling pipe; The power supply is used for power supply.

2. The liquid level detection and liquid supplementing device for a storage battery according to claim 1, wherein, The detection circuit includes a first circuit and a second circuit; the detection module includes a first electrode and a second electrode; the liquid level indication module includes a first indicator light and a second indicator light; Among them, the first electrode is arranged at the high liquid level limit position of the storage battery, and the second electrode is arranged at the low liquid level limit position of the storage battery; The first indicator light and the optocoupler relay in parallel are arranged on the first circuit; the second indicator light is arranged on the second circuit; The first electrode is connected to the first indicator light and the optocoupler relay respectively through the first circuit; when the liquid level of the battery solution of the storage battery reaches the high liquid level limit, the first circuit is conducted through the first electrode and the battery solution, so that the first indicator light lights up, and the optocoupler relay controls the liquid filling pump to stop working; The second electrode is connected to the second indicator light through the second circuit; when the liquid level of the battery solution of the storage battery reaches the low liquid level limit, the second circuit is conducted through the second electrode and the battery solution, so that the second indicator light lights up.

3. The liquid level detection and replenishment device for a storage battery according to claim 2, characterized in that, The optocoupler relay is used to control the intermediate relay, and the normally open contact of the intermediate relay is connected in series in the liquid filling pump control circuit; when the liquid level of the battery solution of the storage battery reaches the high liquid level limit, the optocoupler relay is powered on, the normally closed contact is opened, and then the intermediate relay loses power and the liquid filling pump control circuit is disconnected, and finally the liquid filling pump stops working.

4. A liquid level detection and refilling device for a storage battery according to claim 1, characterized in that, The device further includes a protective cover; The protective cover is used to be installed on the filling port of the storage battery; At least three openings are arranged on the protective cover, and the three openings are respectively used to insert the detection module, insert the liquid filling pipe, and ventilate.

5. The liquid level detection and replenishment device for a storage battery according to claim 1, characterized in that, Both the detection module and the liquid filling pipe are made of flexible materials and are wrapped with elastic insulating materials.

6. The liquid level detection and replenishment device for a storage battery according to claim 1, characterized in that, A start button and a stop button are arranged on the liquid filling pump control circuit; When the liquid filling pump control circuit detects that the start button is pressed, it controls the liquid filling pump to supply water to the storage battery through the liquid filling pipe; When the liquid filling pump control circuit detects that the stop button is pressed, it controls the liquid filling pump to stop working.

7. A liquid level detection and liquid addition device for a storage battery according to claim 1, characterized in that, A connector is arranged at the second end of the liquid filling pipe, and the connector is used to connect to the water outlet of the liquid filling pump.

8. A liquid level detection and refilling device for a storage battery according to claim 1, characterized in that, The detection circuit and the liquid filling pump control circuit are integrated in a mobile control box.

9. The liquid level detection and refilling device for a storage battery according to claim 1, characterized in that, The battery solution of the storage battery includes potassium hydroxide solution or sulfuric acid solution.

10. A liquid level detection and refilling device for a storage battery according to any one of claims 1 to 9, characterized in that, The storage battery includes at least one of nickel-cadmium storage battery or lead-acid storage battery.

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