CN112865234A

CN112865234A - Mobile terminal and control method thereof

Info

Publication number: CN112865234A
Application number: CN202110077768.9A
Authority: CN
Inventors: 王玄朝
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2021-01-20
Filing date: 2021-01-20
Publication date: 2021-05-28

Abstract

The present disclosure relates to a mobile terminal and a control method thereof. The mobile terminal includes: the device comprises an electrochromic module, a detection module, a charging circuit and a control unit, wherein the electrochromic module comprises a first electrode and a second electrode; the detection module is used for detecting the voltage difference between the first electrode and the second electrode and is connected with the first electrode, the second electrode and the control unit; the charging circuit is used for connecting a power supply and is connected with the first electrode, the second electrode and the control unit; the control unit judges whether the voltage difference reaches a set threshold value, and when the voltage difference reaches the set threshold value, the control unit controls the charging circuit to charge the electrochromic module. The condition that the display color effect of the electrochromic module becomes light can be found in time, and the electrochromic module can be charged in time to keep the color effect. Thereby the color displayed by the electrochromic module is kept stable.

Description

Mobile terminal and control method thereof

Technical Field

The present disclosure relates to the field of terminal technologies, and in particular, to a mobile terminal and a control method thereof.

Background

With the development of science and technology and the pursuit of people for the appearance of electronic products such as mobile phones, the color of the product shell can be changed to become a new requirement. At present, the process technology of the terminal shell of the mobile terminal such as a mobile phone, a tablet personal computer and the like has the problems of high voltage, large power consumption, complex circuit structure, high cost and the like.

Disclosure of Invention

The present disclosure provides a mobile terminal and a control method thereof to solve the disadvantages of the related art.

According to a first aspect of the embodiments of the present disclosure, there is provided a mobile terminal, including: the device comprises an electrochromic module, a detection module, a charging circuit and a control unit, wherein the electrochromic module comprises a first electrode and a second electrode;

the detection module is used for detecting the voltage difference between the first electrode and the second electrode and is connected with the first electrode, the second electrode and the control unit;

the charging circuit is used for connecting a power supply and is connected with the first electrode, the second electrode and the control unit;

the control unit judges whether the voltage difference reaches a set threshold value, and when the voltage difference reaches the set threshold value, the control unit controls the charging circuit to charge the electrochromic module.

Optionally, when the voltage difference reaches the set threshold, the control unit controls the charging circuit to charge the electrochromic module, including:

when the voltage difference reaches the set threshold value, the control unit determines the charging parameters required by the electrochromic module according to the voltage difference, and then controls the charging circuit to charge the electrochromic module according to the charging parameters.

Optionally, the charging parameter includes a charging duration.

Optionally, the control unit determines a charging parameter required by the electrochromic module according to the voltage difference, and controls the charging circuit to charge the electrochromic module according to the charging parameter, including:

detecting by the detection module to obtain a first voltage difference value between the first electrode and the second electrode when the electrochromic module is in a charging off state or a discharging state;

the control unit determines a second voltage difference value between the first voltage difference value and a target voltage value of the electrochromic module in a target state according to the first voltage difference value;

the control unit determines the charging time required by the electrochromic module to charge the second voltage difference value according to the second voltage difference value;

and the control unit controls the charging circuit to charge the electrochromic module according to the charging duration.

Optionally, the determining, by the control unit, a charging duration required for charging the electrochromic module by the second voltage difference according to the second voltage difference includes: the control unit determines the charging time required by the electrochromic module to charge the second voltage difference according to the corresponding relation between the charging voltage and the charging time of the electrochromic module; and/or

The target state includes a full power state, and the target voltage value includes a full power voltage value.

Optionally, the electrochromic module comprises a first transparent conductive layer, an electrochromic layer and a second transparent conductive layer, which are sequentially arranged along the thickness direction of the electrochromic module; the first electrode is connected with the first transparent conductive layer, and the second electrode is connected with the second transparent conductive layer;

the control unit controls the charging circuit to apply different voltages to the first electrode and the second electrode so that the electrochromic layer displays different colors.

Optionally, the charging circuit includes a switch module and a power module for connecting to a power supply, one end of the switch module is connected to the power module, and the other end of the switch module is connected to the first electrode and the second electrode;

the control unit controls the switch module to switch so that the charging circuit is switched between different working states, and the power supply module applies different voltages to the first electrode and the second electrode, so that the electrochromic layer displays different colors.

Optionally, the charging circuit comprises a charging state and a discharging state;

when the electrochromic layer is in the charging state, the switch module is conducted with the power module and the first electrode, so that the electrochromic layer is in a first color state; and in the discharging state, the switch module is communicated with the power module and the second electrode so that the electrochromic layer is in a second color state.

Optionally, the switch module includes a first contact and a second contact; the first contact is connected with the power supply module, and the second contact is grounded;

in the charging state, the first contact is conducted with the first electrode, so that the power supply module is conducted with the first electrode; the second contact is conducted with the second electrode so as to enable the second electrode to be grounded;

in the discharge state, the first contact is conducted with the second electrode, so that the power supply module is conducted with the second electrode; the second contact is in electrical communication with the first electrode to ground the first electrode.

Optionally, the switch module includes a first switch and a second switch which are switched synchronously, the first switch is switchably connected between the first contact and the first electrode, and the second switch is switchably connected between the second contact and the second electrode;

in the charging state, the first switch is conducted with the first contact so as to enable the first contact to be conducted with the first electrode; the second switch is conducted with the second contact so as to enable the second contact to be conducted with the second electrode;

in the discharging state, the first switch is conducted with the second contact point so as to enable the second contact point to be conducted with the first electrode; the second switch is in conduction with the first contact so as to enable the first contact to be in conduction with the second electrode.

Optionally, the power supply module further comprises a diode, wherein the anode of the diode is connected with the power supply module, and the cathode of the diode is connected with the switch module;

the charging circuit further comprises a balance state, when the balance state exists, the switch module is disconnected with the power module and the first electrode, and the electrochromic layer keeps the first color state.

in the charging state, the first contact is conducted with the first electrode, so that the cathode of the diode is conducted with the first electrode; the second contact is conducted with the second electrode so as to enable the second electrode to be grounded;

in the discharge state, the first contact is conducted with the second electrode, so that the cathode of the diode is conducted with the second electrode; the second contact is conducted with the first electrode so as to enable the first electrode to be grounded;

in the equilibrium state, the first contact is disconnected from the first electrode and the second contact is disconnected from the second electrode.

in the discharging state, the first switch is conducted with the second contact point so as to enable the second contact point to be conducted with the first electrode; the second switch is conducted with the first contact so as to enable the first contact to be conducted with the second electrode;

in the equilibrium state, the first switch is disconnected from both the first contact and the first electrode, and the second switch is disconnected from both the second contact and the second electrode.

Optionally, the power supply module includes a voltage stabilizer, an input end of the voltage stabilizer is connected to the power supply module, and an output end of the voltage stabilizer is connected to the anode of the diode; the voltage stabilizer is used for reducing the voltage of a power supply, and the diode is used for reducing the voltage output by the voltage stabilizer so as to adapt to the working voltage of the electrochromic layer.

Optionally, the power supply module comprises a voltage stabilizer, an input end of the voltage stabilizer is connected with the power supply module, and an output end of the voltage stabilizer is connected with the switch module; the voltage stabilizer is used for reducing the voltage of a power supply so as to adapt to the working voltage of the electrochromic layer.

Optionally, the electrochromic module further comprises a terminal shell, wherein the terminal shell comprises a rear shell and a middle frame, and the electrochromic module is arranged on the rear shell or the middle frame.

According to a second aspect of the embodiments of the present disclosure, a control method of a mobile terminal is provided, where the mobile terminal includes an electrochromic module and a charging circuit, the electrochromic module includes a first electrode and a second electrode, and the charging circuit is connected to the first electrode and the second electrode;

the control method comprises the following steps:

acquiring a voltage difference between the first electrode and the second electrode;

judging whether the voltage difference reaches a set threshold value;

and when the voltage difference reaches the set threshold value, controlling the charging circuit to charge the electrochromic module.

Optionally, when the voltage difference reaches the set threshold, the charging circuit is controlled to charge the electrochromic module, including:

when the voltage difference reaches the set threshold value, determining the charging parameters required by the electrochromic module according to the voltage difference;

and controlling the charging circuit to charge the electrochromic module according to the charging parameters.

Optionally, the determining the charging parameter required by the electrochromic module according to the voltage difference includes:

determining a voltage difference value between the voltage difference and a target voltage value of the electrochromic module in a target state according to the voltage difference;

and determining a charging parameter required by the electrochromic module to charge the voltage difference according to the voltage difference.

Optionally, the charging parameter includes a charging duration.

Optionally, the control method includes:

acquiring a first voltage difference value between the first electrode and the second electrode when the electrochromic module is in a charging disconnection state or a discharging state;

judging whether the first voltage difference value reaches a set threshold value or not;

when the first voltage difference value reaches the set threshold value, determining a second voltage difference value between the first voltage difference value and a target voltage value of the electrochromic module in a target state according to the first voltage difference value;

determining the charging time required by the electrochromic module to charge the second voltage difference value according to the second voltage difference value;

and controlling the charging circuit to charge the electrochromic module according to the charging duration.

Optionally, determining, according to the second voltage difference, a charging duration required for charging the electrochromic module by the second voltage difference includes: determining the charging time required by the electrochromic module to charge the second voltage difference value according to the corresponding relation between the charging voltage and the charging time of the electrochromic module; and/or

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

according to the embodiment, the voltage difference between the first electrode and the second electrode of the electrochromic module is detected through the detection module, the control unit judges whether the voltage difference reaches the set threshold value, when the voltage difference reaches the set threshold value, the control unit controls the charging circuit to charge the electrochromic module, the condition that the display color effect of the electrochromic module becomes light can be found in time, the electrochromic module can be charged in time to keep the color effect, and therefore the color displayed by the electrochromic module is kept stable.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1 is a block diagram illustrating a structure of a mobile terminal according to an exemplary embodiment.

Fig. 2 is a schematic structural diagram illustrating an electrochromic module of a mobile terminal according to an exemplary embodiment.

Fig. 3 is a schematic structural diagram illustrating an electrochromic module of a mobile terminal according to another exemplary embodiment.

Fig. 4 is a block diagram illustrating a charging circuit of an electrochromic module of a mobile terminal according to an exemplary embodiment.

Fig. 5 is a block diagram illustrating a charging circuit of an electrochromic module of a mobile terminal according to another exemplary embodiment.

Fig. 6 is a block diagram illustrating a structure of a charging circuit of an electrochromic module of a mobile terminal according to still another exemplary embodiment.

Fig. 7 is a block diagram illustrating a structure of a charging circuit of an electrochromic module of a mobile terminal according to still another exemplary embodiment.

Fig. 8 is a block diagram illustrating a structure of a charging circuit of an electrochromic module of a mobile terminal according to still another exemplary embodiment.

Fig. 9 is a flowchart illustrating a control method of a mobile terminal according to an exemplary embodiment.

Fig. 10 and 11 are partial detailed flowcharts illustrating a control method of a mobile terminal according to an exemplary embodiment.

Fig. 12 is a flowchart illustrating a control method of a mobile terminal according to another exemplary embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.

At present, the process technology of the terminal shell of the mobile terminal such as a mobile phone, a tablet personal computer and the like has the problems of high voltage, large power consumption, complex circuit structure, high cost and the like. The present disclosure provides a mobile terminal and a control method thereof, which utilize an electrochromic technology to realize a color change effect of a housing of an electronic device such as a mobile phone. The electrochromic is a phenomenon that optical properties such as color, transmittance, reflectivity, absorptivity and the like of a material are stably and reversibly changed under the action of an applied electric field, and the material is shown as reversible change of color and transparency in appearance.

Hereinafter, the mobile terminal and the control method thereof according to the present disclosure will be described in detail with reference to the accompanying drawings. The features of the following examples and embodiments may be combined with each other without conflict.

Referring to fig. 1, the embodiment of the present disclosure provides a mobile terminal including an electrochromic module 10, a detection module 20, a charging circuit 30, and a control unit 40. The electrochromic module 20 includes a first electrode 11 and a second electrode 12. The detection module 20 is used for detecting a voltage difference between the first electrode 11 and the second electrode 12, and is connected to the first electrode 11, the second electrode 12 and the control unit 40. The charging circuit 30 is used for connecting a power supply, and is connected to the first electrode 11, the second electrode 12 and the control unit 40. The control unit 40 determines whether the voltage difference between the first electrode 11 and the second electrode 12 detected by the detection module 20 reaches a set threshold, and when the voltage difference reaches the set threshold, the control unit 40 controls the charging circuit 30 to charge the electrochromic module 10.

According to the above embodiment, in the present disclosure, the detection module 20 detects the voltage difference between the first electrode 11 and the second electrode 12 of the electrochromic module 10, the control unit 40 determines whether the voltage difference reaches the set threshold, and when the voltage difference reaches the set threshold, the control unit 40 controls the charging circuit 30 to charge the electrochromic module 10, so that the condition that the display color effect of the electrochromic module 10 becomes light can be found in time, the electrochromic module 10 can be charged in time to maintain the color effect, and thus the color displayed by the electrochromic module 10 is kept stable. Meanwhile, the power-on time of the electrochromic module 10 can be accurately controlled, the color displayed by the electrochromic module 10 can be adjusted, and the electrochromic module 10 can be prevented from being damaged due to long-time power-on, so that the risk of damage of the mobile terminal is reduced, the service life of the mobile terminal is prolonged, and the beneficial effects of simple structure, low power consumption and low cost are realized.

Referring to fig. 2, in some alternative embodiments, the electrochromic module 10 may include a first transparent conductive layer 61, an electrochromic layer 62, and a second transparent conductive layer 63 sequentially disposed along a thickness direction (which may be understood as a cross-sectional direction from top to bottom) of the electrochromic module 10. The first electrode 11 is connected to the first transparent conductive layer 61, and the second electrode 12 is connected to the second transparent conductive layer 63. Alternatively, the number of the first electrode 11 and the second electrode 12 may be one, or may be two or more. The control unit 40 controls the charging circuit 30 to apply different voltages to the first electrode 11 and the second electrode 12, so that the electrochromic layer 62 displays different colors, thereby achieving an appearance color switching effect of a terminal housing of the mobile terminal. Optionally, the material of the first electrode 11 and the second electrode 12 includes at least one of copper foil and conductive silver paste. The copper foil and the conductive silver paste have good conductivity. Of course, in other examples, the first electrode 11 and the second electrode 12 may also be made of other conductive materials, such as conductive gold paste or other conductive metal compounds, which is not limited by the disclosure.

It is to be understood that the first electrode 11 may be understood as a positive electrode and the second electrode 12 may be understood as a negative electrode. The power module 32 can be connected to a power source of the mobile terminal to charge the electrochromic module 10. Alternatively, the electrochromic material of the electrochromic layer 62 may include a compound material such as tungsten oxide, molybdenum oxide, titanium oxide, viologen, rare earth phthalocyanine, polypyrrole, polythiophene, polyaniline, and derivatives thereof, and the disclosure is not limited thereto. In this embodiment, the electrochromic material used in the electrochromic layer is a polythiophene SECF material, which changes from transparent color to blue color when a voltage of +2.5V is applied, and maintains blue color when no power is applied. It changes from blue to transparent color after being applied with-2.5V voltage.

Electrochromism (EC) is a phenomenon in which optical properties (reflectivity, transmittance, absorption, etc.) of a material undergo a stable and reversible color change under the action of an external electric field, and is expressed as a reversible change in color and transparency in appearance. Materials with electrochromic properties are referred to as electrochromic materials. In the present embodiment, the first transparent conductive layer 61, the electrochromic layer 62, and the second transparent conductive layer 63 are sequentially disposed from top to bottom. The electrochromic layer 62 may include compound materials such as tungsten oxide, molybdenum oxide, titanium oxide, viologen, rare earth phthalocyanines, polypyrrole, polythiophene, polyaniline, and derivatives thereof. The first transparent conductive layer 61 and the second transparent conductive layer 63 may be made of Indium Tin Oxide (ITO), indium oxide, tin oxide, zinc oxide, tin-doped indium oxide, fluorine-doped tin oxide, or the like.

In some alternative embodiments, the first electrode 11 is disposed on the first transparent conductive layer 61 and is located inside the electrochromic layer 62. A first through hole (not shown) is opened at a position of the second transparent conductive layer 63 and the electrochromic layer 62 relative to the first electrode 11, and the first electrode 11 is led out of the second transparent conductive layer 63 through the first through hole. The number and the positions of the first through holes are in one-to-one correspondence with the number and the positions of the first electrodes 11. The shape and number of the first electrodes 11 may be set according to the requirements of the electrochromic module, such as color changing speed and color effect, and the disclosure is not limited thereto. The second electrode 12 is disposed on the second transparent conductive layer 63 and is located inside the electrochromic layer 62. A second through hole (not shown) is opened at a position of the first transparent conductive layer 61 and the electrochromic layer 62 opposite to the second electrode 12, and the second electrode 12 is led out of the first transparent conductive layer 61 through the second through hole. The number and the positions of the second through holes are arranged in one-to-one correspondence with the number and the positions of the second electrodes 12. The shape and number of the second electrodes 12 can be set according to the requirements of the electrochromic module, such as color changing speed and color effect, and the disclosure is not limited thereto. Alternatively, the first through hole and the second through hole may be formed by a laser drilling process or a die drilling process.

Through the above arrangement, by arranging the first through hole and the second through hole on the first transparent conductive layer 61, the second transparent conductive layer 63 and the electrochromic layer 62, the first electrode 11 can penetrate through the first through hole to be led out of the second transparent conductive layer 63, and the second electrode 12 can penetrate through the second through hole to be led out of the first transparent conductive layer 61, so that the inner space of the electrochromic module is utilized, the space occupied by the electrochromic module is reduced, and the miniaturization design of a product is facilitated. The mode of leading out and bending outwards is not needed, the space occupied by the electrochromic module is reduced, and the miniaturization design of the product is facilitated.

Referring to fig. 3, in some alternative embodiments, the electrochromic module 10 may further include a protective layer 65, a second substrate layer 66, an optical glue layer 67, and a cover plate 68. The first substrate layer 64 is disposed on a side of the second transparent conductive layer 63 away from the electrochromic layer 62, and the first substrate layer 64 may be made of a PET film (polyester film) or the like. A protective layer 65 is arranged on the side of the first substrate layer 64 remote from the electrochromic layer. The protective layer 65 can not only strengthen the structural strength of the electrochromic module, but also serve as a decorative layer to achieve the appearance decoration effect, and the attractiveness of the product is improved. The second substrate layer 66 is disposed on a side of the first transparent conductive layer 61 away from the electrochromic layer 62, and the second substrate layer 66 may be made of a PET film (mylar) or the like. An optical glue layer 67 is provided on the side of the second substrate layer 66 remote from the electrochromic layer 62. As the optical Adhesive layer 67, an Adhesive suitable for bonding a transparent optical element, such as OCA Adhesive (optical Clear Adhesive), can be used. It is understood that the first substrate layer 64 may be plated with a first transparent conductive layer 61 and the second substrate layer 66 may be plated with a second transparent conductive layer 63. An electrochromic layer 62 which can be electrified and changed in color is added in the middle, and then an electrochromic module is formed by compounding. A cover plate 68 is provided on the side of the optical glue layer 67 remote from the electrochromic layer 62. The cover plate 68 may be made of a transparent base material including glass, resin, transparent plastic film, etc.

In some optional embodiments, the second transparent conductive layer 63, the electrochromic layer 62, and the first substrate layer 64 are provided with the first through hole at a position opposite to the first electrode 11, and the first electrode 11 is led out of the first substrate layer 64 through the first through hole. The first transparent conductive layer 61, the electrochromic layer 62 and the second substrate layer 66 are provided with the second through hole at a position corresponding to the second electrode 12, and the second electrode 12 is led out of the second substrate layer 66 through the second through hole. Optionally, the first electrode 11 is located at an edge position of the first transparent conductive layer 61. The first electrode 11 is disposed at the edge of the first transparent conductive layer 61, so that the influence of the first electrode 11 on the color display effect of the electrochromic module can be reduced. The second electrode 12 is located at the edge of the second transparent conductive layer 63. The second electrode 12 is disposed at the edge of the second transparent conductive layer 63, so that the influence of the second electrode 12 on the color display effect of the electrochromic module can be reduced.

In some optional embodiments, the aperture of the first through hole is not larger than the maximum outer diameter of the first electrode 11, so as to ensure the reliability of the electrical connection between the first electrode 11 and the first transparent conductive layer 61. In this embodiment, the first electrode 11 may be a strip structure, and the width range may be 0.5 to 3 mm. The first through hole is provided corresponding to the center position of the first electrode 11. Of course, in other examples, the position of the first through hole may also be set according to actual needs, and the disclosure does not limit this. The aperture of the second through hole is not larger than the maximum outer diameter of the second electrode 12, so as to ensure the reliability of the electrical connection between the second electrode 12 and the second transparent conductive layer 63. In this embodiment, the second electrode 12 may be a strip structure, and the width range may be 0.5-3 mm. The second through hole is provided corresponding to the midpoint position of the second electrode 12. Of course, in other examples, the position of the second through hole may be set according to actual needs, which is not limited by the present disclosure

In some alternative embodiments, the first electrode 11 and the second electrode 12 may be formed by a printing process. Alternatively, the printing process may comprise a silk-screen process or a pad printing process. The printing process may be selected according to actual needs, which is not limited by this disclosure. The silk-screen bronze drum screen printing plate is used for printing patterns on a printed material, and has the advantages of good hand feeling, large-plane printing and the like. The transfer printing is to transfer the picture and text on the steel intaglio (or photosensitive rubber intaglio) to the printing stock by the transfer printing head cast by silicon rubber, can be used for printing on planes or various formed objects, and has the advantages of suitability for large and small products, various strange and abnormal products and the like.

Referring to fig. 4 and 5, in some alternative embodiments, the charging circuit 30 may include a switch module 31 and a power module 32 for connecting a power source, one end of the switch module 31 is connected to the power module 32, and the other end of the switch module 31 is connected to the first electrode 11 and the second electrode 12. The control unit controls the switching of the switch module 31 to switch the charging circuit 30 between different working states, so that the power module 32 applies different voltages to the first electrode 11 and the second electrode 12 of the electrochromic module 10, thereby displaying different colors on the electrochromic layer of the electrochromic module 10.

In some alternative embodiments, the charging circuit 30 includes a charging state and a discharging state. Referring to fig. 4, when the charging circuit 30 is in a charging state, the switch module 31 is electrically connected to the power module 32 and the first electrode 11, so that the electrochromic layer of the electrochromic module 10 is in a first color state. Referring to fig. 5, when the charging circuit 30 is in the discharging state, the switch module 31 is electrically connected to the power module 32 and the second electrode 12, so that the electrochromic layer of the electrochromic module 10 is in the second color state. It can be understood that, taking the example that the electrochromic material adopted by the electrochromic module is a polythiophene SECF material, the first color is blue, and the second color is transparent.

Through the above arrangement, the charging circuit 30 can realize that the electrochromic layer of the electrochromic module 10 shows the first color state or the second color state by switching between the charging state and the discharging state, thereby realizing the color switching effect of the electrochromic module 10 and meeting the color change requirement of the terminal shell product. In addition, the charging circuit occupies about 14 square millimeters of main board area, occupies small space and is beneficial to the miniaturization design of products.

In some optional embodiments, the charging circuit may further include a voltage regulator (not shown), an input of the voltage regulator is connected to the power module 32, and an output of the voltage regulator is connected to the switch module 31. The voltage stabilizer is used for reducing the voltage of the power supply connected with the power supply module 32 so as to adapt to the working voltage of the electrochromic module 10. In the embodiment, the voltage regulator may be a low dropout regulator (LDO), which has high step-down accuracy and low cost. For example, the voltage value output by the power module 32 is 6V dc voltage, and the voltage value can be reduced to 2.8V or 2.5V dc voltage by the voltage regulator, so as to satisfy the operating voltage of the electrochromic module 10.

In some alternative embodiments, the switch module 31 includes a first contact 33 and a second contact 34. The first contact 33 is connected to the power module 32, and the second contact 34 is grounded, which is shown as GND.

Referring to fig. 4, when the charging circuit 30 is in a charging state, the first contact 33 is electrically connected to the first electrode 11, so that the power module 32 is electrically connected to the first electrode 11. The second contact 34 is in electrical communication with the second electrode 12 to ground the second electrode 12. Assuming that the voltage provided by the power module 32 satisfies the operating voltage of the electrochromic module 10, the potential of the first electrode 11 is greater than the potential of the second electrode 12, so that the electrochromic module 10 can assume the first color state when the charging circuit 30 is in the charging state.

Referring to fig. 5, when the charging circuit 30 is in a discharging state, the first contact 33 is electrically connected to the second electrode 12, so that the power module 32 is electrically connected to the second electrode 12. The second contact 34 is electrically connected to the first electrode 11, so that the first electrode 11 is grounded. Assuming that the voltage provided by the power module 32 satisfies the operating voltage of the electrochromic module 10, the potential of the first electrode 11 is smaller than the potential of the second electrode 12, so that the electrochromic module 10 can assume the second color state when the charging circuit 30 is in the discharging state.

In some optional embodiments, the switch module 31 includes a first switch 35 and a second switch 36 which are synchronously switched, the first switch 35 is switchably connected between the first contact 33 and the first electrode 11, and the second switch 36 is switchably connected between the second contact 34 and the second electrode 12. In this embodiment, the first switch 35 is a single-pole double-throw switch, thereby realizing switchable connection between the first contact 33 and the first electrode 11. The second switch 36 is a single pole double throw switch enabling switchable connection between the second contact 34 and the second electrode 12. The charging circuit 30 is switched between the charging state and the discharging state by switching of the first switch 35 and the second switch 36. In addition, the switch module 31 adopts the above structure, the area of the main board occupied by the charging circuit 30 is about 14 square millimeters, the occupied space is small, and the miniaturization design of the product is facilitated.

Referring to fig. 4, when the charging circuit 30 is in the charging state, the first switch 35 is closed to the left to conduct with the first contact 33, so that the first contact 33 conducts with the first electrode 11, and the power module 32 conducts with the first electrode 11. The second switch 36 is closed to the left to conduct with the second contact 34, so that the second contact 34 conducts with the second electrode 12, thereby grounding the second electrode 12. Assuming that the voltage provided by the power module 32 satisfies the operating voltage of the electrochromic module 10, the potential of the first electrode 11 is greater than the potential of the second electrode 12, so that the electrochromic module 10 can assume the first color state when the charging circuit 30 is in the charging state.

Referring to fig. 5, when the charging circuit 30 is in the discharging state, the first switch 35 is closed to the right to conduct with the second contact 34, so that the second contact 34 conducts with the first electrode 11, and the first electrode 11 is grounded. The second switch 36 is closed to the right to conduct with the first contact 33, so that the first contact 33 conducts with the second electrode 12, and the power module 32 conducts with the second electrode 12. Assuming that the voltage provided by the power module 32 satisfies the operating voltage of the electrochromic module 10, the potential of the first electrode 11 is smaller than the potential of the second electrode 12, so that the electrochromic module 10 can assume the second color state when the charging circuit 30 is in the discharging state.

Referring to fig. 6 to 8, in some alternative embodiments, the charging circuit may further include a diode 50, an anode of the diode 50 is connected to the power module 32, and a cathode of the diode 50 is connected to the switch module 31. The charging circuit 30 also includes a state of equilibrium. That is, the charging circuit 30 includes a charging state, a discharging state, and an equilibrium state. When the charging circuit 30 is in the equilibrium state, the switch module 31 is disconnected from the power module 32 and the first electrode 11, and the electrochromic layer 62 maintains the first color state. In this embodiment, the diode 50 is a schottky diode, which has the advantages of low withstand voltage, fast recovery speed, short time, and the like. The schottky diode may step down the power module 32 to adapt the operating voltage of the electrochromic module 10.

Referring to fig. 6, when the charging circuit 30 is in a charging state, the switch module 31 is electrically connected to the power module 32 and the first electrode 11, so that the electrochromic layer of the electrochromic module 10 is in a first color state.

As shown in fig. 8, when the charging circuit 30 is in the balanced state, the switch module 31 is disconnected from the power module 32 and the first electrode 11, the electrochromic module 10 is equivalent to having no access circuit, and the schottky diode can maintain the voltage of the first electrode 11 at the voltage when the charging circuit 30 is in the charging state, so that the electrochromic module 10 can maintain the first color state.

Referring to fig. 7, in the discharging state, the switch module 31 is conducted with the power module 32 and the second electrode 12, so that the electrochromic layer of the electrochromic module 10 is in the second color state. Thereby enabling the electrochromic module 10 to be driven to switch between the first color state and the second color state and remain there.

In some optional embodiments, the charging circuit may further include a diode 50 and a voltage regulator, an input terminal of the voltage regulator is connected to the power module 32, an output terminal of the voltage regulator is connected to an anode of the diode 50, and a cathode of the diode 50 is connected to the switch module 31. The voltage stabilizer is used for reducing the voltage value of the power module 32, and the diode 50 is used for reducing the voltage output by the voltage stabilizer to adapt to the working voltage of the electrochromic module 10. In this embodiment, the voltage regulator may be a low dropout regulator (LDO), which has high step-down accuracy and low cost. For example, the voltage value output by the power module 32 is 6V dc voltage, and the voltage value can be reduced to 2.8V dc voltage by the voltage regulator, and the diode 50 can further reduce the 2.8V dc voltage output by the voltage regulator to 2.5V dc voltage, so as to satisfy the working voltage of the electrochromic module 10.

In some alternative embodiments, the switch module 31 includes a first contact 33 and a second contact 34. The first contact 33 is connected to the power module 32, and the second contact 34 is grounded, which is shown as GND. It will be appreciated that the negative pole of the power supply is connected to ground.

Referring to fig. 6, when the charging circuit 30 is in a charging state, the first contact 33 is conducted with the first electrode 11, so that the cathode of the diode 50 is conducted with the first electrode 11, and the power module 32 is conducted with the first electrode 11. The second contact 34 is in electrical communication with the second electrode 12 to ground the second electrode 12. Assuming that the voltage dropped by the diode 50 satisfies the operating voltage of the electrochromic module 10, the potential of the first electrode 11 is greater than the potential of the second electrode 12, so that the electrochromic module 10 can assume the first color state when the charging circuit 30 is in the charging state.

Referring to fig. 8, when the charging circuit 30 is in a balanced state, the first contact 33 is disconnected from the first electrode 11, and the second contact 34 is disconnected from the second electrode 12, so that the switch module 31 is disconnected from the power module 32 and the first electrode 11. The electrochromic module 10 is equivalent to having no access circuit, and the schottky diode can maintain the voltage of the first electrode 11 at the voltage when the charging circuit 30 is in the charging state, so that the electrochromic module 10 can be maintained in the first color state.

As shown in fig. 7, when the charging circuit 30 is in a discharging state, the first contact 33 is conducted with the second electrode 12, so that the cathode of the diode 50 is conducted with the second electrode 12, and the power module 32 is conducted with the second electrode 12. The second contact 34 is electrically connected to the first electrode 11, so that the first electrode 11 is grounded. Assuming that the voltage dropped by the diode 50 satisfies the operating voltage of the electrochromic module 10, the potential of the first electrode 11 is lower than the potential of the second electrode 12, so that the electrochromic module 10 can assume the second color state when the charging circuit 30 is in the discharging state.

In some optional embodiments, the switch module 31 includes a first switch 35 and a second switch 36 which are synchronously switched, the first switch 35 is switchably connected between the first contact 33 and the first electrode 11, and the second switch 36 is switchably connected between the second contact 34 and the second electrode 12. In this embodiment, the first switch 35 is a single-pole double-throw switch, thereby realizing switchable connection between the first contact 33 and the first electrode 11. The second switch 36 is a single pole double throw switch enabling switchable connection between the second contact 34 and the second electrode 12. The switching of the charging circuit between the charging state and the discharging state is achieved by the switching of the first switch 35 and the second switch 36.

Referring to fig. 6, when the charging circuit 30 is in a charging state, the first switch 35 is closed leftward to conduct with the first contact 33, so that the first contact 33 conducts with the first electrode 11, and the cathode of the diode 50 conducts with the first electrode 11, so that the power module 32 conducts with the first electrode 11. The second switch 36 is closed to the left to conduct with the second contact 34, so that the second contact 34 conducts with the second electrode 12, thereby grounding the second electrode 12. Assuming that the voltage dropped by the diode 50 satisfies the operating voltage of the electrochromic module 10, the potential of the first electrode 11 is greater than the potential of the second electrode 12, so that the electrochromic module 10 can assume the first color state when the charging circuit 30 is in the charging state.

Referring to fig. 7, when the charging circuit 30 is in the discharging state, the first switch 35 is closed to the right to conduct with the second contact 34, so that the second contact 34 conducts with the first electrode 11, and the first electrode 11 is grounded. The second switch 36 is closed to the right to conduct with the first contact 33, so that the first contact 33 conducts with the second electrode 12, and the cathode of the diode 50 conducts with the second electrode 12, thereby conducting the power module 32 with the second electrode 12. Assuming that the voltage dropped by the diode 50 satisfies the operating voltage of the electrochromic module 10, the potential of the first electrode 11 is lower than the potential of the second electrode 12, so that the electrochromic module 10 can assume the second color state when the charging circuit 30 is in the discharging state.

In some optional embodiments, when the control unit 40 compares and determines that the voltage difference between the first electrode 11 and the second electrode 12 reaches the set threshold, the control unit 40 controls the charging circuit 30 to charge the electrochromic module 10, which may further include: when the control unit 40 compares and determines that the voltage difference between the first electrode 11 and the second electrode 12 reaches the set threshold, the control unit 40 determines the charging parameter required by the electrochromic module 10 according to the voltage difference, and then controls the charging circuit 30 to charge the electrochromic module 10 according to the charging parameter.

Through the arrangement, the control unit 40 compares and judges whether the voltage difference between the first electrode 11 and the second electrode 12 reaches the set threshold value according to the detection result of the detection module 20, when the voltage difference reaches the set threshold value, the control unit 40 determines the charging parameter required by the electrochromic module 10 according to the voltage difference, and then controls the charging circuit 30 to charge the electrochromic module 10 according to the charging parameter, so that the condition that the color effect is lightened due to overlong power-off time of the electrochromic module 10 can be found in time, and the electrochromic module 10 can be charged in time to keep the color effect. Optionally, the mobile terminal may include a terminal housing, the terminal housing includes a rear shell and a middle frame, and the electrochromic module 10 may be disposed in the rear shell or the middle frame, so as to change an appearance color effect of the rear shell of the terminal housing or a color effect of the middle frame. The detection module 20 may include an ADC converter, i.e., an analog-to-digital converter, an a/D converter, which may include a detection circuit. The control unit 40 may include a comparator for comparing the voltage difference between the first electrode 11 and the second electrode 12 detected by the detection module 20 with a set threshold value and determining whether the voltage difference reaches the set threshold value. Alternatively, the set threshold may be 1V-1.5V, and is set according to actual needs, which is not limited by the present disclosure.

In some optional embodiments, the charging parameter includes at least one of a charging time period, a charging time, and a charging pre-attainment voltage value. In this embodiment, taking the example that the charging parameter includes the charging duration, the control unit 40 determines the charging parameter required by the electrochromic module 10 according to the voltage difference, and then controls the charging circuit 30 to charge the electrochromic module 10 according to the charging parameter, which may further include:

the detection module 20 detects that the electrochromic module 10 is in a charging off state or a discharging state, and a first voltage difference Δ V1 between the first electrode 11 and the second electrode 12 is obtained.

The control unit 40 determines a second voltage difference Δ V2 between the first voltage difference Δ V1 and a target voltage value V2 of the electrochromic module 10 in a target state according to the first voltage difference Δ V1, wherein Δ V2 is V2- Δ V1. It is understood that the charge-off state can be understood as any time after the electrochromic module is charged off, the discharge state can be understood as any time after the electrochromic module is discharged, and the first voltage difference Δ V1 can represent the voltage value corresponding to the electrochromic module at any time of the charge-off state or the discharge state. Alternatively, the target state may be a full power state, and the target voltage value V2 may be a full power voltage value. Taking the target state as a full charge state, and the charge-off state is 1 hour after the electrochromic module is turned off or discharged, the second voltage difference Δ V2 is the voltage difference between the voltage value corresponding to the electrochromic module at that moment and the first voltage difference Δ V1 between the first electrode 11 and the second electrode 12 before 1 hour.

The control unit 40 determines the charging time period T1 required by the electrochromic module 10 to charge the second voltage difference Δ V2 according to the second voltage difference Δ V2. It should be noted that, because the electrochromic modules made of different materials have different corresponding relationships between charging voltage and charging time due to factors such as example concentration, the corresponding relationships between charging voltage and charging time of various materials that can be used in the electrochromic modules can be tested in advance and made into a corresponding relationship table, and the corresponding relationship table is stored in the control unit 40. Optionally, the control unit 40 may determine, according to a corresponding relationship between the charging voltage and the charging time duration of the electrochromic module 10, a charging time duration T1 required for the electrochromic module 10 to charge the second voltage difference Δ V2 through a table lookup method. For example, the time required for charging the electrochromic module 10 by 1V is 0.5 hour, the time required for charging by 0.5V is 0.2 hour, and the like, and the correspondence between the charging voltage and the charging time period of the electrochromic module is tested and made into a correspondence table.

The control unit 40 controls the charging circuit 30 to charge the electrochromic module 10 according to the charging time period T1. Taking the target state as a full-charge state, the full-charge voltage value is 2.5V, and the charge-off state is 1 hour after the charge-off of the electrochromic module, or the discharge state is 1 hour after the discharge of the electrochromic module starts, and the first voltage difference Δ V1 between the first electrode 11 and the second electrode 12 before 1 hour is 1.2V, the second voltage difference Δ V2 is 2.5V-1.2V-1.3V. The control unit 40 determines, according to the corresponding relationship between the charging voltage and the charging time of the electrochromic module 10, that the charging time T1 required for the electrochromic module 10 to charge the second voltage difference Δ V2 is 30 minutes by using a table lookup method. The control unit 40 controls the charging circuit 30 to charge the electrochromic module 10 for 30 minutes according to the charging time period T1, so that the electrochromic module 10 reaches a full power state. The target state may be any state other than the full power state, and the voltage of the electrochromic module 10 may be charged to the required voltage value in the above manner, and may be set according to actual needs, which is not limited by the present disclosure.

Therefore, in the mobile terminal provided in the embodiment of the present disclosure, the detection module 20 detects the voltage difference between the first electrode 11 and the second electrode 12 of the electrochromic module 10 and reports the voltage difference to the control unit 40 periodically, and the reporting period can be set according to actual needs. The electrochromic module 10 usually displays a transparent color, when the electrochromic module 10 needs to be adjusted to blue, the control unit 40 switches the state of the charging circuit 30 to a charging state, as shown in fig. 6, controls the charging circuit 30 to charge the electrochromic module 10 to 2.5V according to the determined charging parameter, so that the electrochromic module 10 gradually displays blue from the transparent color, and further, the housing of the mobile terminal displays blue.

In order to avoid the damage of the electrochromic module 10 caused by long-time charging, the control unit 40 switches the state of the charging circuit 30 to the equilibrium state, as shown in fig. 8, at which the voltage of the electrochromic module 10 gradually decreases to 1.5V and maintains the state of displaying blue. However, after a long time of charge interruption or discharge, the voltage of the electrochromic module 10 gradually decreases, and the display color gradually becomes lighter. Therefore, in order to avoid this situation, the control unit 40 can control the charging circuit 30 to charge the electrochromic module 10 to the full power state and then turn off according to the actual needs and the determined charging parameters, so that the electrochromic module 10 always displays blue. When the color displayed by the electrochromic module 10 becomes light, the control unit 40 controls the charging circuit 30 to charge the electrochromic module 10 to a full power state according to the charging parameter, so as to maintain the color displayed by the electrochromic module 10.

When the user needs to change the housing of the mobile terminal from the blue color to the transparent color, the control unit 40 switches the state of the charging circuit 30 to the discharging state, as shown in fig. 7, and controls the charging circuit 30 to discharge the electrochromic module 10 to the required state according to the determined discharging parameters, so that the electrochromic module 10 gradually changes from the blue color to the transparent color. The charging, discharging and color-changing control of the electrochromic module can be accurately controlled.

The embodiment of the disclosure further provides a control method of the mobile terminal, the mobile terminal comprises an electrochromic module and a charging circuit, the electrochromic module comprises a first electrode and a second electrode, and the charging circuit is connected with the first electrode and the second electrode. It should be noted that the description of the mobile terminal in the above embodiments and embodiments also applies to the control method of the present embodiment.

Referring to fig. 1 and 9, the control method may include the steps of:

step S11: the voltage difference between the first electrode 11 and the second electrode 12 of the electrochromic module 10 is obtained. Alternatively, the voltage difference between the first electrode 11 and the second electrode 12 of the electrochromic module 10 may be detected by a detection module. The detection module may include an ADC converter, i.e., an analog-to-digital converter, and an a/D converter, which may include a detection circuit.

Step S12: and judging whether the voltage difference between the first electrode 11 and the second electrode 12 of the electrochromic module 10 reaches a set threshold value. Alternatively, the comparison and judgment of whether the voltage difference between the first electrode 11 and the second electrode 12 of the electrochromic module 10 reaches the set threshold value may be performed by a control unit, and the control unit may include a comparator for comparing the voltage difference between the first electrode 11 and the second electrode 12 detected by the detection module with the set threshold value and judging whether the voltage difference reaches the set threshold value. Alternatively, the set threshold may be 1V-1.5V, and is set according to actual needs, which is not limited by the present disclosure.

Step S13: and when the voltage difference reaches the set threshold value, controlling the charging circuit 30 to charge the electrochromic module 10. Alternatively, the charging circuit 30 may be controlled by a control unit to charge the electrochromic module 10.

According to the embodiment, the voltage difference between the first electrode 11 and the second electrode 12 of the electrochromic module 10 is detected, whether the voltage difference reaches the set threshold value is judged, and when the voltage difference reaches the set threshold value, the charging circuit 30 is controlled to charge the electrochromic module 10, so that the condition that the display color effect of the electrochromic module 10 becomes light can be found in time, the electrochromic module 10 can be charged in time to maintain the color effect, and the color displayed by the electrochromic module 10 is kept stable. Meanwhile, the power-on time of the electrochromic module 10 can be accurately controlled, the color displayed by the electrochromic module 10 can be adjusted, and the electrochromic module 10 can be prevented from being damaged due to long-time power-on, so that the risk of damage of the mobile terminal is reduced, the service life of the mobile terminal is prolonged, and the beneficial effects of simple structure, low power consumption and low cost are realized.

Referring to fig. 10, in some alternative embodiments, in step S13, when the voltage difference reaches the set threshold, the controlling the charging circuit 30 to charge the electrochromic module 10 may further include:

step S131: when the voltage difference between the first electrode 11 and the second electrode 12 reaches the set threshold value through comparison and judgment, the charging parameters required by the electrochromic module 10 are determined according to the voltage difference.

Step S132: and controlling the charging circuit 30 to charge the electrochromic module 10 according to the charging parameters.

Through the method, the control unit 40 compares and judges whether the voltage difference between the first electrode 11 and the second electrode 12 reaches the set threshold value according to the detection result of the detection module 20, when the voltage difference reaches the set threshold value, the control unit 40 determines the charging parameter required by the electrochromic module 10 according to the voltage difference, and then controls the charging circuit 30 to charge the electrochromic module 10 according to the charging parameter, so that the situation that the color effect is lightened due to overlong power-off time of the electrochromic module 10 can be found in time, and the electrochromic module 10 can be charged in time to maintain the color effect.

Referring to fig. 11, in some optional embodiments, in the step S131, the determining the charging parameter required by the electrochromic module 10 according to the voltage difference may further include:

step S1311: and determining a voltage difference value between the voltage difference and a target voltage value of the electrochromic module 10 in a target state according to the voltage difference.

Step S1312: and determining the charging parameters required by the electrochromic module 10 for charging the voltage difference according to the voltage difference.

In some optional embodiments, the charging parameter includes at least one of a charging time period, a charging time, and a charging pre-attainment voltage value. The charging circuit 30 may include at least one of a charge-off state and a discharge state. In the present embodiment, the charging parameter includes a charging time period as an example.

Referring to fig. 12, when the charging circuit 30 is in the charge disconnected state, the control method may further include:

step S111: acquiring a first voltage difference Δ V1 between the first electrode 11 and the second electrode 12 when the electrochromic module 10 is in a charging off state or a discharging state. Optionally, the first voltage difference Δ V1 can be detected by the detection module.

Step S112: and judging whether the first voltage difference value delta V1 reaches a set threshold value. Optionally, the control unit may compare and determine whether the first voltage difference Δ V1 reaches a set threshold.

Step S113: when the first voltage difference Δ V1 reaches the set threshold, determining a second voltage difference Δ V2 between the first voltage difference Δ V1 and a target voltage value of the electrochromic module 10 in a target state according to the first voltage difference Δ V1, wherein Δ V2 is V2- Δ V1. It is understood that the charge-off state can be understood as any time after the electrochromic module is charged off, the discharge state can be understood as any time after the electrochromic module is discharged, and the first voltage difference Δ V1 can represent the voltage value corresponding to the electrochromic module at any time of the charge-off state or the discharge state. Alternatively, the target state may be a full power state, and the target voltage value V2 may be a full power voltage value. Taking the target state as a full charge state, and the charge-off state is 1 hour after the electrochromic module is turned off or discharged, the second voltage difference Δ V2 is the voltage difference between the voltage value corresponding to the electrochromic module at that moment and the first voltage difference Δ V1 between the first electrode 11 and the second electrode 12 before 1 hour.

Step S114: and determining the charging time length T1 required by the electrochromic module 10 to charge the second voltage difference value Δ V2 according to the second voltage difference value Δ V2. It should be noted that, because the electrochromic modules made of different materials have different corresponding relationships between charging voltage and charging time due to factors such as example concentration, the corresponding relationships between charging voltage and charging time of various materials that can be used in the electrochromic modules can be tested in advance and made into a corresponding relationship table, and the corresponding relationship table is stored in the control unit 40. Optionally, the control unit 40 may determine, according to a corresponding relationship between the charging voltage and the charging time duration of the electrochromic module 10, a charging time duration T1 required for the electrochromic module 10 to charge the second voltage difference Δ V2 through a table lookup method. For example, the time required for charging the electrochromic module 10 by 1V is 0.5 hour, the time required for charging by 0.5V is 0.2 hour, and the like, and the correspondence between the charging voltage and the charging time period of the electrochromic module is tested and made into a correspondence table.

Step S115: and controlling the charging circuit 30 to charge the electrochromic module 10 according to the charging time period T1. Optionally, the charging circuit 30 may be controlled by the control unit to charge the electrochromic module 10. Taking the target state as a full-charge state, the full-charge voltage value is 2.5V, and the charge-off state is 1 hour after the charge-off of the electrochromic module, or the discharge state is 1 hour after the discharge of the electrochromic module starts, and the first voltage difference Δ V1 between the first electrode 11 and the second electrode 12 before 1 hour is 1.2V, the second voltage difference Δ V2 is 2.5V-1.2V-1.3V. The control unit 40 determines, according to the corresponding relationship between the charging voltage and the charging time of the electrochromic module 10, that the charging time T1 required for the electrochromic module 10 to charge the second voltage difference Δ V2 is 30 minutes by using a table lookup method. The control unit 40 controls the charging circuit 30 to charge the electrochromic module 10 for 30 minutes according to the charging time period T1, so that the electrochromic module 10 reaches a full power state. The target state may be any state other than the full power state, and the voltage of the electrochromic module 10 may be charged to the required voltage value in the above manner, and may be set according to actual needs, which is not limited by the present disclosure.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A mobile terminal, comprising: the device comprises an electrochromic module, a detection module, a charging circuit and a control unit, wherein the electrochromic module comprises a first electrode and a second electrode;

2. The mobile terminal of claim 1, wherein when the voltage difference reaches the set threshold, the control unit controls the charging circuit to charge the electrochromic module, including:

3. The mobile terminal of claim 2, wherein the charging parameter comprises a charging duration.

4. The mobile terminal of claim 3, wherein the control unit determines a charging parameter required by the electrochromic module according to the voltage difference, and controls the charging circuit to charge the electrochromic module according to the charging parameter, comprising:

5. The mobile terminal of claim 4, wherein the determining, by the control unit according to the second voltage difference, a charging duration required by the electrochromic module to charge the second voltage difference comprises: the control unit determines the charging time required by the electrochromic module to charge the second voltage difference according to the corresponding relation between the charging voltage and the charging time of the electrochromic module; and/or

6. The mobile terminal of claim 1, wherein the electrochromic module comprises a first transparent conductive layer, an electrochromic layer and a second transparent conductive layer sequentially arranged along a thickness direction of the electrochromic module; the first electrode is connected with the first transparent conductive layer, and the second electrode is connected with the second transparent conductive layer;

7. The mobile terminal of claim 6, wherein the charging circuit comprises a switch module and a power module for connecting a power supply, one end of the switch module is connected to the power module, and the other end of the switch module is connected to the first electrode and the second electrode;

8. The mobile terminal of claim 7, wherein the charging circuit comprises a charging state and a discharging state;

9. The mobile terminal of claim 8, wherein the switch module comprises a first contact and a second contact; the first contact is connected with the power supply module, and the second contact is grounded;

10. The mobile terminal of claim 9, wherein the switch module comprises a first switch and a second switch that are synchronously switched, the first switch being switchably connected between the first contact and the first electrode, the second switch being switchably connected between the second contact and the second electrode;

11. The mobile terminal according to claim 8, further comprising a diode, wherein an anode of the diode is connected to the power module, and a cathode of the diode is connected to the switch module;

12. The mobile terminal of claim 11, wherein the switch module comprises a first contact and a second contact; the first contact is connected with the power supply module, and the second contact is grounded;

13. The mobile terminal of claim 12, wherein the switch module comprises a first switch and a second switch that are synchronously switched, the first switch being switchably connected between the first contact and the first electrode, the second switch being switchably connected between the second contact and the second electrode;

14. The mobile terminal according to any of claims 11 to 13, wherein the power module comprises a voltage regulator, an input terminal of the voltage regulator is connected to the power module, and an output terminal of the voltage regulator is connected to the anode of the diode; the voltage stabilizer is used for reducing the voltage of a power supply, and the diode is used for reducing the voltage output by the voltage stabilizer so as to adapt to the working voltage of the electrochromic layer.

15. The mobile terminal according to any of claims 8 to 10, wherein the power module comprises a voltage regulator, an input terminal of the voltage regulator is connected to the power module, and an output terminal of the voltage regulator is connected to the switch module; the voltage stabilizer is used for reducing the voltage of a power supply so as to adapt to the working voltage of the electrochromic layer.

16. The mobile terminal of claim 1, further comprising a terminal housing, wherein the terminal housing comprises a rear shell and a middle frame, and the electrochromic module is disposed on the rear shell or the middle frame.

17. The control method of the mobile terminal is characterized in that the mobile terminal comprises an electrochromic module and a charging circuit, wherein the electrochromic module comprises a first electrode and a second electrode, and the charging circuit is connected with the first electrode and the second electrode;

the control method comprises the following steps:

judging whether the voltage difference reaches a set threshold value;

18. The method as claimed in claim 17, wherein when the voltage difference reaches the set threshold, controlling the charging circuit to charge the electrochromic module comprises:

19. The method of claim 18, wherein determining the charging parameter required by the electrochromic module according to the voltage difference comprises:

20. The control method of claim 19, wherein the charging parameter comprises a charging duration.

21. The control method according to claim 20, characterized by comprising:

22. The method of claim 21, wherein determining a charging duration required for the electrochromic module to charge the second voltage difference value according to the second voltage difference value comprises: determining the charging time required by the electrochromic module to charge the second voltage difference value according to the corresponding relation between the charging voltage and the charging time of the electrochromic module; and/or