CN221530984U - Reverse connection preventing circuit of water electrolysis module - Google Patents

Abstract

The application discloses an anti-reverse connection circuit of an electrolytic water module, which comprises a first electrode plate made of rare metal and a second electrode plate made of non-rare metal, wherein the anti-reverse connection circuit comprises a control circuit, and the control circuit comprises a driving state and a detection state opposite to the power supply direction of the driving state; the water electrolysis module comprises an anti-reverse connection module which is arranged between the first electrode plate and the second electrode plate and is electrically connected with the control circuit to form a detection loop; and determining whether the water electrolysis module is reversely connected according to the voltage and/or current conditions at two ends of the detection loop in the detection state and/or the driving state. According to the application, the reverse connection prevention operation is carried out on the two electrode plates in the water electrolysis module, so that the two electrode plates can be accurately connected with the control circuit, and the smooth operation of electrolysis is ensured.

Description

Reverse connection preventing circuit of water electrolysis module

Technical Field

The application relates to the technical field of cleaning equipment, in particular to an anti-reverse connection circuit of an electrolytic water module.

Background

With the development of technology, cleaning equipment such as floor washers and the like are widely used. At present, an electrolytic water module is usually arranged in the cleaning equipment, tap water is electrolyzed into an acidic solution which can be used for disinfection through the electrolytic water module, and after the electrolysis is successful, the cleaning solution is electrolyzed into a disinfection solution, so that the ground can be cleaned and disinfected, and the cleaning effect on the ground is ensured. Generally, two electrode plates are arranged in the electrolytic water module; the earliest two electrode plates are made of rare metal materials, and have high price and high cost. In the prior art, in order to reduce the manufacturing cost of the electrode plates, one electrode plate is manufactured by using a non-rare metal material, and the other electrode plate is manufactured by using a rare metal material.

In practice, the electrode plate is connected with the main control board, and after the connection is successful, the main control board electrifies the electrode plate to electrolyze tap water. However, in the prior art, when the non-rare metal electrode plate is connected to the negative electrode of the main control board and the rare metal electrode plate is connected to the positive electrode of the main control board, the water electrolysis module can normally electrolyze tap water. When the non-rare metal electrode plate is connected to the positive electrode of the main control board and the rare metal electrode plate is connected to the negative electrode of the main control board, tap water or iron ions in the non-rare metal are easily oxidized, so that water in the cleaning equipment is changed into yellow, and the cleaning effect is affected. Therefore, in order to ensure good electrolysis effect, the two metal electrode plates need to be subjected to reverse connection prevention operation in the production process.

Disclosure of utility model

The application aims to provide an anti-reverse connection circuit of an electrolytic water module, which can perform anti-reverse connection operation on two electrode plates in the electrolytic water module.

Embodiments of the present application are implemented as follows:

the application provides an anti-reverse connection circuit of an electrolytic water module, which comprises a first electrode plate made of rare metal and a second electrode plate made of non-rare metal, wherein the anti-reverse connection circuit comprises a control circuit, and the control circuit comprises a driving state and a detection state opposite to the power supply direction of the driving state; the water electrolysis module comprises an anti-reverse connection module which is arranged between the first electrode plate and the second electrode plate and is electrically connected with the control circuit to form a detection loop; and determining whether the water electrolysis module is reversely connected according to the voltage and/or current conditions at two ends of the detection loop in the detection state and/or the driving state.

In an embodiment, the anti-reverse connection module is a diode, the second electrode plate is electrically connected with an anode of the diode, and the first electrode plate is electrically connected with a cathode of the diode.

In one embodiment, the reverse connection preventing circuit of the water electrolysis module further comprises a detection circuit; the first electrode plate is connected with the control circuit through the detection circuit, and the second electrode plate is connected with the control circuit through the detection circuit.

In one embodiment, the detection circuit includes a constant voltage current limiting unit; the first electrode plate is connected with the control circuit through the constant voltage current limiting unit, and the second electrode plate is connected with the control circuit through the constant voltage current limiting unit.

In an embodiment, the detection circuit further includes a filtering unit; the first electrode plate is connected with the control circuit through the filtering unit and the constant voltage current limiting unit in sequence, and the second electrode plate is connected with the control circuit through the filtering unit and the constant voltage current limiting unit in sequence.

In one embodiment, the constant voltage current limiting unit includes a constant voltage current limiting chip, a first current limiting resistor and a second current limiting resistor; the first electrode plate is connected with the control circuit through the constant voltage current limiting chip, and the second electrode plate is connected with the control circuit through the constant voltage current limiting chip; the first current limiting resistor is connected with the constant-voltage current limiting chip; the second current limiting resistor is connected with the constant voltage current limiting chip.

In one embodiment, the reverse connection preventing circuit of the water electrolysis module further comprises a sampling circuit; the control circuit is connected with the detection loop through the sampling circuit and is used for detecting the current condition in the loop through the sampling circuit.

In one embodiment, the sampling circuit includes a sampling unit, and the control circuit is connected to the detection circuit through the sampling unit.

In an embodiment, the sampling circuit further includes a bias unit, an amplifying unit, and a feedback unit; the control circuit is connected with the detection loop through the amplifying unit, the biasing unit and the sampling unit in sequence; the feedback unit is connected with the amplifying unit.

In one embodiment, the reverse connection preventing circuit of the water electrolysis module further comprises a switching power supply module; the bias unit comprises a first resistor, a second resistor, a first capacitor and a third resistor; one end of the first resistor is connected with the amplifying unit, and the other end of the first resistor is connected with the sampling unit; one end of the second resistor is connected to a connecting circuit between the first resistor and the amplifying unit, and the other end of the second resistor is grounded; the first capacitor is connected with the second resistor in parallel; one end of the third resistor is connected to the connecting circuit between the first resistor and the amplifying unit, and the other end of the third resistor is connected with the switching power supply module.

Compared with the prior art, the application has the beneficial effects that: the application provides an anti-reverse connection circuit of an electrolytic water module, which is used for carrying out anti-reverse connection operation on two electrode plates in the electrolytic water module, ensuring that the two electrode plates can be connected with a control circuit according to a correct connection mode and avoiding reverse connection phenomenon. Further, through guaranteeing that two electrode plates can be connected with control circuit according to the exact connected mode, guarantee that electrolysis water operation can go on smoothly, avoid appearing the phenomenon that the water becomes turbid because of the iron ion is by oxidation, promote user's use experience and guarantee clean effect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic view of a cleaning machine according to an embodiment of the present application;

FIG. 2 is a schematic diagram showing connection between an electrode pad and a main control circuit according to an embodiment of the present application;

FIG. 3 is a schematic view of an electrolytic water module according to an embodiment of the present application;

FIG. 4 is a schematic diagram illustrating the connection of the anti-reverse circuit of the water electrolysis module according to the first embodiment of the present application;

FIG. 5 is a schematic diagram showing the connection of the reverse connection preventing circuit of the water electrolysis module according to the second embodiment of the present application;

FIG. 6 is a schematic diagram showing a first electrode pad and a second electrode pad according to an embodiment of the present application, wherein the first electrode pad and the second electrode pad are correctly connected and the control circuit works in a driving state;

FIG. 7 is a schematic diagram showing a control circuit operating in a detection state with the first electrode pad and the second electrode pad correctly connected according to an embodiment of the present application;

FIG. 8 is a schematic diagram illustrating the connection of the anti-reverse circuit of the water electrolysis module according to the third embodiment of the present application;

fig. 9 is a schematic diagram illustrating connection of a control circuit according to an embodiment of the application.

Reference numerals:

1-an anti-reverse connection circuit of an electrolytic water module; 2-an electrolytic water module; 10-a control circuit; 20-a first electrode sheet; 30-a second electrode sheet; 40-an anti-reverse connection module; 50-a constant voltage current limiting unit; 51-a constant voltage current limiting chip; 52-a current limiting branch; a 60-filtering unit; a 70-sampling unit; an 80-bias unit; a 90-amplification unit; a 100-feedback unit; 200-brushing the ground; 210-cleaning member; 310-handle; 320-a fuselage body; 321-a dirt suction motor; 322-clean water tank; 323-sewage bucket.

Detailed Description

The terms "first," "second," "third," and the like are used merely for distinguishing between descriptions and not for indicating a sequence number, nor are they to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it should be noted that, directions or positional relationships indicated by terms such as "inner", "outer", "left", "right", "upper", "lower", etc., are based on directions or positional relationships shown in the drawings, or directions or positional relationships conventionally put in use of the product of the application, are merely for convenience of describing the present application and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present application.

In the description of the present application, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements.

The technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings.

In one embodiment, the present application provides a cleaning apparatus, which may be a hand-held or self-moving floor scrubber. The structure of the cleaning device will be explained below using a hand-held floor washer as an example. The hand-held floor washing machine comprises a cleaning machine and a base, wherein the cleaning machine is used for cleaning a surface to be cleaned, and the base is used for carrying out maintenance operations such as self-cleaning, drying and the like on the cleaning machine. Fig. 1 is a schematic structural diagram of a cleaning machine according to an embodiment of the application; as shown in fig. 1, the cleaning machine includes a floor brush 200 and a main body pivotally connected, a handle 310 for a user to hold and a main body 320 provided on the main body, and cleaning members 210 provided on the floor brush 200. The cleaning elements 210 may be single roll, twin roll, or tracked cleaning cloths, or a combination of the above.

The main body 320 is further provided therein with a soil sucking assembly including a soil sucking port (not shown in fig. 1) communicating with the cleaning member 210, and a soil bucket 323 for storing soil; wherein the soil pick-up port and the soil bucket 323 are communicated through a soil pick-up pipe (not shown in fig. 1); the soil pick-up assembly further includes a soil pick-up motor 321 in communication with the soil bucket 323 for picking up soil.

Also provided in the main body 320 is a liquid supply assembly including a clear water tank 322, a liquid supply flow passage (not shown in fig. 1) communicating with the clear water tank 322 for supplying liquid to the cleaning member 210, and a water pump (not shown in fig. 1) for delivering the liquid.

In an embodiment, an electrolytic water module 2 may be further disposed in the clean water tank 322, where the electrolytic water module 2 is configured to electrolyze water in the clean water tank 322, and to transform the water in the clean water tank 322 into an acidic solution that can be used for disinfection. Or the liquid supply channel is provided with an electrolytic water module 2, and the electrolytic water module 2 is used for electrolyzing tap water in the liquid supply channel into an acidic solution for disinfection in real time when the liquid supply channel supplies liquid for the cleaning piece 210.

The principle of cleaning the surface to be cleaned by the cleaner is as follows:

The soil pick-up motor 321 operates while the cleaning member 210 rotates; during the rotation of the cleaning member 210, water in the clean water tank 322 is discharged onto the cleaning member 210 through the liquid supply passage, so that the cleaning member 210 is in a wet state. The cleaning member 210 in a wet state then generates physical friction with the surface to be cleaned during rotation, and dirt on the surface to be cleaned is removed during the physical friction. Dirt is adhered to the cleaning member 210 or the surface to be cleaned in the process of cleaning the dirt, the dirt sucking motor 321 operates to generate a suction force, and the dirt adhered to the cleaning member 210 or the surface to be cleaned is sucked into the dirt sucking pipe through the dirt sucking port under the suction force of the dirt sucking motor 321 and enters the sewage bucket 323 through the dirt sucking pipe.

Fig. 2 is a schematic diagram showing connection between an electrode pad and a control circuit 10 according to an embodiment of the application. Fig. 3 is a schematic diagram of an electrolytic water module 2 according to an embodiment of the application. As shown in fig. 2 and 3, the electrolytic water module 2 is provided with a first electrode sheet 20 and a second electrode sheet 30, and the first electrode sheet 20 and the second electrode sheet 30 are connected to a control circuit 10 in the cleaning apparatus. Specifically, a power module is present in the control circuit 10, and the first electrode pad 20 and the second electrode pad 30 are connected to the power module in the control circuit 10.

When the cleaning apparatus is in operation, the power supply module in the control circuit 10 supplies power to the first electrode sheet 20 and the second electrode sheet 30, and charges the first electrode sheet 20 and the second electrode sheet 30. As shown in fig. 2, the water electrolysis module 2 is provided with a water inlet a, tap water enters the water electrolysis module 2 through the water inlet a, when the first electrode plate 20 and the second electrode plate 30 are electrified and the water electrolysis module 2 is filled with tap water, the first electrode plate 20, the second electrode plate 30 and the control circuit 10 form a passage to electrolyze tap water in the water electrolysis module 2. Tap water is electrolyzed to become an acidic solution for sterilization, and the acidic solution for sterilization can be discharged to the floor or the cleaning member 210 for cleaning the floor through the water outlet B of the electrolyzed water module 2. It should be noted that when tap water is electrolyzed, the intermittent operation of the water electrolysis module 2 can be controlled, so that scale formation on the first electrode plate 20 and the second electrode plate 30 is prevented, and the electrolysis efficiency of the water electrolysis module 2 is ensured.

In practice, in order to reduce the cost, the first electrode sheet 20 and the second electrode sheet 30 are made of different materials, the first electrode sheet 20 is made of rare metal, and the second electrode sheet 30 is made of non-rare metal. When the first electrode plate 20 is connected with the positive electrode of the power supply module and the second electrode plate 30 is connected with the negative electrode of the power supply module, the water electrolysis module 2 can normally electrolyze tap water; when the first electrode plate 20 is connected with the negative electrode of the power supply module, and the second electrode plate 30 is connected with the positive electrode of the power supply module, iron ions in tap water or non-rare metal can be oxidized, so that tap water in the electrolytic water module 2 turns yellow, and the cleaning effect is greatly affected.

As can be seen from the above, in order to ensure the electrolytic effect, it is necessary to ensure that the first electrode tab 20 and the second electrode tab 30 are connected to the control circuit 10 in a predetermined connection manner. Therefore, the present application provides a reverse connection preventing circuit 1 of an electrolytic water module, by which reverse connection preventing operation is performed on a first electrode sheet 20 and a second electrode sheet 30, so that the first electrode sheet 20 and the second electrode sheet 30 can be connected with a control circuit 10 in a correct connection mode.

Fig. 4 is a schematic connection diagram of an anti-reverse circuit 1 of an electrolytic water module according to a first embodiment of the present application. As shown in fig. 4, the anti-reverse connection circuit 1 of the water electrolysis module comprises a first electrode plate 20, a second electrode plate 30, an anti-reverse connection module 40 and a control circuit 10; one end of the first electrode plate 20 is connected with a power module in the control circuit 10, and the other end of the first electrode plate 20 is connected with an anti-reverse connection module 40; one end of the second electrode plate 30 is connected with a power module in the control circuit 10, and the other end of the second electrode plate 30 is connected with an anti-reverse connection module 40. The reverse connection preventing module 40, the first electrode plate 20 and the second electrode plate 30 are integrated in the water electrolysis module 2; the anti-reverse connection module 40, the first electrode plate 20 and the second electrode plate 30 are connected according to the connection mode to form a detection loop; the control circuit 10 includes a driving state in which the power supply direction is the same as that of the water electrolysis module 2 when the water electrolysis module is in normal operation, and a detecting state in which the power supply direction is opposite to that of the driving state, and the control circuit 10 detects the current and/or voltage conditions in the loop in the detecting state and/or the driving state, and then determines whether the first electrode sheet 20 and the second electrode sheet 30 are reversely connected according to the detection result.

From the above, it can be seen that in the present application, it is ensured that the two electrode pads are connected to the control circuit 10 in a correct connection manner, so as to avoid the occurrence of the reverse connection phenomenon. Further, by ensuring that the two electrode plates can be connected with the control circuit 10 in a correct connection mode, the operation of electrolysis of water can be smoothly performed, the phenomenon that water becomes turbid due to oxidation of iron ions is avoided, the use experience of a user is improved, and the cleaning effect is ensured.

In the second embodiment, as shown in fig. 5, the anti-reverse connection module 40 is a diode. The anode of the diode is electrically connected with the second electrode plate 30, the cathode of the diode is electrically connected with the first electrode plate 20, and in order to avoid the phenomenon that nonferrous metal ions such as iron ions and the like in the non-rare metal plates become turbid due to electrolysis, the second electrode plate 30 made of the non-rare metal is electrically connected with the cathode of the power supply and the first electrode plate 20 made of the rare metal is electrically connected with the anode of the power supply when the water electrolysis module 2 works normally. The specific principle of reverse connection prevention operation using the reverse connection prevention circuit is explained in detail below:

scheme one:

When the water electrolysis module 2 with the reverse connection preventing module 40 is mounted on the control circuit 10, the control circuit 10 supplies power to the water electrolysis module 2 through the driving state that the power supply directions are the same when the water electrolysis module 2 works normally. In this embodiment, the control circuit 10 operates in a driving state, the positive pole of the power module in the control circuit 10 outputs a high level, and the negative pole of the power module in the control circuit 10 outputs a low level.

(1) If no current and/or no voltage exists in the detection loop at this time, the electrolytic water module 2 is correctly installed at this time, and no reverse connection phenomenon exists.

As shown in fig. 6, when the diode, the first electrode piece 20 and the second electrode piece 30 are all correctly connected, the first electrode piece 20 is connected with the positive electrode of the power module, and the second electrode piece 30 is connected with the negative electrode of the power module; the anode of the diode is electrically connected to the second electrode pad 30 and the cathode of the diode is electrically connected to the first electrode pad 20.

As shown in fig. 6, when the control circuit 10 is operated in the driving state, the positive electrode of the power supply module in the control circuit 10 outputs a high level, and the negative electrode of the power supply module in the control circuit 10 outputs a low level. "+" in fig. 6 represents that the power module outputs a high level signal; the "-" in fig. 6 represents that the power supply module outputs a low level signal.

(2) If the current and/or voltage exists in the detection loop at this time, the electrolytic water module 2 is reversely installed at this time, and the installation needs to be corrected again.

Scheme II:

When the water electrolysis module 2 with the reverse connection preventing module 40 is mounted on the control circuit 10, the control circuit 10 supplies power to the water electrolysis module 2 through a detection state that the power supply directions are opposite when the water electrolysis module 2 works normally. In this embodiment, the control circuit 10 operates in a detection state, the positive pole of the power module in the control circuit 10 outputs a low level, and the negative pole of the power module in the control circuit 10 outputs a high level.

(1) If the current and/or voltage in the detection loop reaches the set threshold value at this time, the electrolytic water module 2 is correctly installed at this time, and no reverse connection phenomenon exists. The set threshold value of the current and/or the voltage can be different according to the voltage division of the power supply voltage and other electric devices, and can be 12V, 7V and 5V;12A, 5A, 3A, etc.

As shown in fig. 7, when the diode, the first electrode piece 20 and the second electrode piece 30 are all correctly connected, the first electrode piece 20 is connected with the positive electrode of the power module, and the second electrode piece 30 is connected with the negative electrode of the power module; the anode of the diode is electrically connected to the second electrode pad 30 and the cathode of the diode is electrically connected to the first electrode pad 20.

As shown in fig. 7, in the present embodiment, when the control circuit 10 is operated in the detection state, the positive electrode of the power module in the control circuit 10 outputs a low level, and the negative electrode of the power module in the control circuit 10 outputs a high level. "+" in fig. 7 represents that the power module outputs a high level signal; the "-" in fig. 7 represents that the power supply module outputs a low level signal.

(2) If no current and/or no voltage exists in the detection loop or the current and/or voltage in the detection loop does not reach the set threshold value, the electrolytic water module 2 is installed reversely and needs to be corrected again.

Scheme III:

The reverse connection preventing module 40 may be damaged or soldered in a poor manner, which results in that the control circuit 10 is controlled to operate in a detection state or a driving state and detect the voltage and/or current at both ends of the loop to determine whether the water electrolysis module 2 is reverse-connected.

Therefore, when the water electrolysis module 2 with the reverse connection preventing module 40 is mounted on the control circuit 10, the control circuit 10 is first made to supply power to the water electrolysis module 2 in a detection state, and then the control circuit 10 is made to supply power to the water electrolysis module 2 in a driving state, so that the voltage and/or the current of the detection circuit when the control circuit 10 works in the two states are respectively detected.

(1) If the control circuit 10 supplies power to the water electrolysis module 2 in a detection state, detecting that current and/or voltage exists in the loop; when the control circuit 10 supplies power to the water electrolysis module 2 in a driving state, the current and/or the voltage still pass through the detection loop, which indicates that the reverse connection preventing module 40 is damaged at the moment, whether the water electrolysis module 2 is correctly installed cannot be judged, and the reverse connection preventing module 40 is required to be replaced and then detected again.

(2) If the control circuit 10 supplies power to the water electrolysis module 2 in a detection state, detecting no current and/or no voltage in the loop; when the control circuit 10 supplies power to the water electrolysis module 2 in a driving state, no current and/or no voltage passes through the detection loop, which indicates that the reverse connection preventing module 40 is in cold joint.

(3) If the control circuit 10 supplies power to the water electrolysis module 2 in a detection state, detecting that current and/or voltage exists in the loop; the control circuit 10 detects no current and/or no voltage passing in the loop when the water electrolysis module 2 is powered in a driving state; or if the current and/or voltage in the detection loop is greater than the set threshold value when the control circuit 10 supplies power to the water electrolysis module 2 in the detection state; the control circuit 10 detects that the current and/or voltage in the loop is smaller than a set threshold value when the water electrolysis module 2 is powered in a driving state; the electrolytic water module 2 is correctly installed at this time, and the reverse connection phenomenon does not exist.

(4) If the control circuit 10 supplies power to the water electrolysis module 2 in a detection state, detecting no current and/or no voltage in the loop; the control circuit 10 detects that current and/or voltage passes through the loop when the water electrolysis module 2 is powered in a driving state; or if the current and/or voltage in the detection loop is smaller than the set threshold value when the control circuit 10 supplies power to the water electrolysis module 2 in the detection state; the control circuit 10 detects that the current and/or voltage in the loop is greater than a set threshold value when the water electrolysis module 2 is powered in a driving state; the electrolytic water module 2 is installed in reverse and needs to be re-installed.

In the above three embodiments, if the reverse connection of the water electrolysis module 2 is detected, or the abnormal conditions such as the damage and the cold joint of the reverse connection preventing module 40 are detected, the control circuit 10 may perform an alarm prompt, and the alarm prompt may be a voice prompt, a display prompt, or the like.

It should be noted that, when the reverse connection preventing operation is performed, no tap water exists in the water electrolysis module 2, and the first electrode sheet 20 and the second electrode sheet 30 are conducted only through the reverse connection preventing module 40.

As can be seen from the above, in the present application, the manner of preventing the reverse connection of the first electrode tab 20 and the second electrode tab 30 is simple and easy to implement.

Further, the above embodiment is described using the anti-reverse connection module 40 as a diode as an example, and those skilled in the art will recognize that the anti-reverse connection module 40 may be any combination of one or more electric devices, such as a triode, that can be used to implement unidirectional current limiting for the detection loop.

It will also be appreciated by those skilled in the art that the first electrode sheet 20 in the present application is a rare metal electrode sheet, such as titanium, nickel, ruthenium, iridium, etc.; the second electrode sheet 30 is a non-rare metal electrode sheet such as stainless steel or the like.

Fig. 8 is a schematic connection diagram of an anti-reverse connection circuit 1 of an electrolytic water module according to a third embodiment of the present application. Fig. 9 is a schematic diagram showing connection of the control circuit 10 according to an embodiment of the application. As shown in fig. 8, in the embodiment, the anti-reverse connection circuit 1 of the water electrolysis module further comprises a detection circuit, the power module in the control circuit 10 is provided with a we_a port and a we_b port, one end of the first electrode plate 20 is connected with the we_a port through the detection circuit, the other end of the first electrode plate 20 is connected with the anti-reverse connection module 40, one end of the second electrode plate 30 is connected with the we_b port through the detection circuit, and the other end of the second electrode plate 30 is connected with the anti-reverse connection module 40; when the first electrode sheet 20 and the second electrode sheet 30 are connected to the detection unit and the control circuit 10 in the above manner, a detection circuit is formed.

Specifically, as shown in fig. 8, the detection circuit includes a constant voltage current limiting unit 50 and a filtering unit 60, a constant voltage current limiting chip 51 and a current limiting branch 52 are disposed in the constant voltage current limiting unit 50, and a first current limiting resistor R39 and a second current limiting resistor R4 in the current limiting branch 52 are connected with the constant voltage current limiting chip 51; the first electrode plate 20 is connected with a WE_A port through the filtering unit 60 and the constant voltage current limiting chip 51 in sequence, and the second electrode plate 30 is connected with a WE_B port through the filtering unit 60 and the constant voltage current limiting chip 51 in sequence; that is, in the present embodiment, the first electrode sheet 20 is connected to the filter unit 60, the filter unit 60 is connected to the constant voltage current limiting chip 51, and the constant voltage current limiting chip 51 is connected to the we_a port; similarly, in this embodiment, the second electrode sheet 30 is connected to the filter unit 60, the filter unit 60 is connected to the constant voltage current limiting chip 51, and the constant voltage current limiting chip 51 is connected to the we_b port.

In an embodiment, as shown in fig. 8 and 9, the anti-reverse connection circuit 1 of the water electrolysis module further includes a sampling circuit, the control circuit 10 is connected with the detection circuit through the sampling circuit, and the control circuit 10 can detect the current condition in the circuit through the sampling circuit. Specifically, the control circuit 10 is provided with a WE port, and the sampling circuit includes a sampling unit 70, a biasing unit 80, an amplifying unit 90 and an amplifying unit 90; the feedback unit 100 is connected with the amplifying unit 90, the WE port is connected with the detection loop through the amplifying unit 90, the biasing unit 80 and the sampling unit 70 in sequence, and more specifically, the WE port is connected with the constant-voltage current-limiting chip 51 in the detection loop through the amplifying unit 90, the biasing unit 80 and the sampling unit 70 in sequence; that is, in the present embodiment, the WE port is connected to the amplifying unit 90, the amplifying unit 90 is connected to the biasing unit 80, the biasing unit 80 is connected to the sampling unit 70, and the sampling unit 70 is connected to the constant voltage current limiting chip 51 in the detection circuit. As shown in fig. 8 and 9, the bias unit 80 may be connected to the W1 port of the sampling unit 70 through the W2 port.

As shown in fig. 9, the reverse connection preventing circuit 1 of the water electrolysis module further comprises a switching power supply module; the bias unit 80 includes a first resistor R38, a second resistor R34, a first capacitor C15, and a third resistor R41; one end of the first resistor R38 is connected to the amplifying unit 90, and the other end of the first resistor R38 is connected to the sampling unit 70; one end of the second resistor R34 is connected to the connecting line between the first resistor R38 and the amplifying unit 90, and the other end of the second resistor R34 is grounded; the first capacitor C15 is connected with the second resistor R34 in parallel; one end of the third resistor R41 is connected to the connecting line between the first resistor R38 and the amplifying unit 90, and the other end of the third resistor R41 is connected to the switching power supply module; in this embodiment, the output voltage of the switching power supply module is 5V.

As shown in fig. 8 and 9, when the reverse connection preventing operation is performed, the control circuit 10 passes through the power module to pass through the level signal of the corresponding level for the first electrode pad 20, and simultaneously passes through the power module to pass through the level signal of the corresponding level for the second electrode pad 30. The control circuit 10 monitors the current condition in the detection loop through the detection loop, and then determines whether the first electrode plate 20 and the second electrode plate 30 are reversely connected according to the monitoring result. The details of the foregoing embodiments are not described herein.

When the water electrolysis module 2 is used for electrolyzing tap water, the control circuit 10, the first electrode plate 20, the second electrode plate 30, the filtering unit 60 and the constant voltage and current limiting unit 50 form an electrolysis circuit.

When the electrolysis water module 2 is used for electrolyzing tap water with different water qualities, the ion content in the different water qualities is different; when tap water with poor water quality is electrolyzed, the working current of the electrolysis circuit is extremely large, and the working voltage of the electrolysis circuit is lowered; the electrolytic circuit may be further connected with other circuits, and after the operating voltage of the electrolytic circuit is pulled down, the voltage division of the other circuits becomes low, and the output power of the other circuits becomes unstable. In addition, when the operating current of the electrolytic circuit is large, the duration of the cleaning device is also reduced. In this embodiment, the constant voltage current limiting unit 50 is disposed in the electrolytic circuit, and the operating current of the electrolytic circuit is limited by the constant voltage current limiting unit 50, so that the above problems are effectively avoided. As shown in fig. 8, the VCC pin of the constant voltage current limiting chip 51 is connected to a voltage of 12V, and the operating voltage of the constant voltage current limiting chip 51 is 12V; the working current I=R39/(R39+R40) of the constant-voltage current-limiting chip 51 is 5V/R22/F; wherein, R39/(r39+r40) ×5v is the voltage value collected by the FAULT pin of the constant voltage current limiting chip 51; when r39=2.4k and r40=10k, the voltage value collected by the FAULT pin of the constant voltage current limiting chip 51 is 0.94v, F is the amplification factor of the discharge unit, and f=r21×r28/(r21+r28); when r21=200k, r28=10k, f=9.52; when r22=0.47R, the operating current i=200 mA of the constant voltage current chip.

When the water electrolysis module 2 is used for electrolyzing tap water, the control circuit 10 can collect the working current of the electrolysis circuit in real time, and the electrolysis progress of the electrolyzed water is monitored in real time by collecting the working current of the electrolysis circuit. However, when the water electrolysis module 2 performs electrolysis on tap water with good water quality, the working current of the electrolysis circuit is particularly small, and at this time, the control circuit 10 may misunderstand that no current exists in the electrolysis circuit, so that misjudgment occurs. Therefore, in this embodiment, by setting the bias unit 80, the sampling accuracy of the working current is improved, and the occurrence of erroneous judgment is avoided.

Illustratively, when the electrolytic water module 2 is not operating, the operating voltage of the electrolytic circuit is 0V; when the water electrolysis module 2 works, the working voltage of the electrolysis circuit is V1, and the voltage acquired by the control circuit 10 is V1; after the bias unit 80 is provided, the operating voltage of the electrolytic circuit is still V1, but the voltage collected by the control circuit 10 is the sum of the operating voltage V1 and the bias voltage V2. The voltage picked up by the control circuit 10 is increased and the corresponding current picked up is also increased. It can be seen that, in this embodiment, after the bias unit 80 is disposed, the control circuit 10 can accurately collect the working current even if the working current in the electrolytic circuit is smaller, so as to improve the collection accuracy of the working current. It is to be noted that, the bias voltage v2=r34/(r34+r41) G; wherein G is the output voltage of the switching power supply module, in this embodiment, g=5v; when r34=6.2k, r41=71.5k, v2=0.399V.

The above description is only of the preferred embodiments of the present application and is not intended to limit the present application, but various modifications and variations can be made to the present application by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims (10)

1. The reverse connection preventing circuit of the water electrolysis module comprises a first electrode plate made of rare metal and a second electrode plate made of non-rare metal, and is characterized by comprising a control circuit, wherein the control circuit comprises a driving state and a detection state opposite to the power supply direction of the driving state;

The water electrolysis module comprises an anti-reverse connection module which is arranged between the first electrode plate and the second electrode plate and is electrically connected with the control circuit to form a detection loop;

And determining whether the water electrolysis module is reversely connected according to the voltage and/or current conditions at two ends of the detection loop in the detection state and/or the driving state.

2. The reverse connection preventing circuit of the water electrolysis module according to claim 1, wherein the reverse connection preventing module is a diode, the second electrode sheet is electrically connected with an anode of the diode, and the first electrode sheet is electrically connected with a cathode of the diode.

3. The reverse connection preventing circuit of an electrolytic water module according to claim 1, further comprising:

The detection circuit is used for detecting the first electrode plate, the first electrode plate is connected with the control circuit through the detection circuit, and the second electrode plate is connected with the control circuit through the detection circuit.

4. A reverse connection preventing circuit of an electrolytic water module according to claim 3, wherein the detecting circuit comprises:

And the first electrode plate is connected with the control circuit through the constant voltage current limiting unit, and the second electrode plate is connected with the control circuit through the constant voltage current limiting unit.

5. The reverse connection prevention circuit of an electrolyzed water module according to claim 4, wherein the detection circuit further comprises:

The first electrode plate sequentially passes through the filtering unit and the constant voltage current limiting unit to be connected with the control circuit, and the second electrode plate sequentially passes through the filtering unit and the constant voltage current limiting unit to be connected with the control circuit.

6. The reverse connection preventing circuit of the water electrolysis module according to claim 4, wherein the constant voltage current limiting unit comprises:

The first electrode plate is connected with the control circuit through the constant-voltage current-limiting chip, and the second electrode plate is connected with the control circuit through the constant-voltage current-limiting chip;

the first current limiting resistor is connected with the constant-voltage current limiting chip;

The second current limiting resistor is connected with the constant voltage current limiting chip.

7. The reverse connection preventing circuit of an electrolytic water module according to claim 1, further comprising:

The control circuit is connected with the detection loop through the sampling circuit and is used for detecting the current condition in the detection loop through the sampling circuit.

8. The reverse connection preventing circuit of the water electrolysis module according to claim 7, wherein the sampling circuit comprises a sampling unit, and the control circuit is connected with the detection loop through the sampling unit.

9. The reverse connection prevention circuit of an electrolyzed water module according to claim 8, wherein the sampling circuit further comprises:

The control circuit is connected with the detection loop through the amplifying unit, the biasing unit and the sampling unit in sequence;

and the feedback unit is connected with the amplifying unit.

10. The reverse connection preventing circuit of the water electrolysis module according to claim 9, further comprising a switching power supply module;

The bias unit includes:

One end of the first resistor is connected with the amplifying unit, and the other end of the first resistor is connected with the sampling unit;

one end of the second resistor is connected to a connecting circuit between the first resistor and the amplifying unit, and the other end of the second resistor is grounded;

a first capacitor connected in parallel with the second resistor;

And one end of the third resistor is connected to the connecting circuit of the first resistor and the amplifying unit, and the other end of the third resistor is connected with the switching power supply module.