Mobile terminal and control method thereof

Abstract

The present disclosure relates to a mobile terminal and a control method thereof. The mobile terminal includes: an electrochromic module, a detection module, a charging circuit and a control unit, wherein the electrochromic module includes a first electrode and a second electrode; the detection module is used to detect the voltage difference between the first electrode and the second electrode, and is connected to the first electrode, the second electrode and the control unit; the charging circuit is used to connect a power supply, and is connected to the first electrode, the second electrode and the control unit; the control unit determines 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. It is possible to promptly detect the situation where the display color effect of the electrochromic module becomes lighter, and the electrochromic module can be charged in time to maintain the color effect. Thereby, the color displayed by the electrochromic module remains stable.

Description

Technical Field

[0001] The present disclosure relates to the field of terminal technology, and in particular to a mobile terminal and a control method thereof. Background Art

[0002] With the development of science and technology and people's pursuit of the appearance of electronic products such as mobile phones, the ability to change the color of the product shell has become a new demand. At present, the process technology of the terminal shell of mobile terminals such as mobile phones and tablets has problems such as high voltage, high power consumption, complex circuit structure and high cost. Summary of the invention

[0003] The present disclosure provides a mobile terminal and a control method thereof to solve the deficiencies in the related art.

[0004] According to a first aspect of an embodiment of the present disclosure, there is provided a mobile terminal, comprising: 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;

[0005] The detection module is used to detect the voltage difference between the first electrode and the second electrode, and is connected to the first electrode, the second electrode and the control unit;

[0006] The charging circuit is used to connect to a power source, and is connected to the first electrode, the second electrode and the control unit;

[0007] The control unit determines whether the voltage difference reaches a set threshold value. When the voltage difference reaches the set threshold value, the control unit controls the charging circuit to charge the electrochromic module.

[0008] Optionally, when the voltage difference reaches the set threshold, the control unit controls the charging circuit to charge the electrochromic module, including:

[0009] When the voltage difference reaches the set threshold, 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.

[0010] Optionally, the charging parameters include charging duration.

[0011] Optionally, 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, including:

[0012] Obtaining, by the detection module, a first voltage difference between the first electrode and the second electrode when the electrochromic module is in a charging disconnection state or a discharging state;

[0013] The control unit determines, according to the first voltage difference, a second voltage difference between the first voltage difference and a target voltage value of the electrochromic module in a target state;

[0014] The control unit determines the charging time required for the electrochromic module to charge the second voltage difference according to the second voltage difference;

[0015] The control unit controls the charging circuit to charge the electrochromic module according to the charging duration.

[0016] Optionally, the control unit determines the charging time required for the electrochromic module to charge the second voltage difference according to the second voltage difference, including: the control unit determines the charging time required for the electrochromic module to charge the second voltage difference according to the corresponding relationship between the charging voltage and the charging time of the electrochromic module; and / or

[0017] The target state includes a fully charged state, and the target voltage value includes a fully charged voltage value.

[0018] Optionally, the electrochromic module comprises a first transparent conductive layer, an electrochromic layer and a second transparent conductive layer sequentially arranged along the thickness direction of the electrochromic module; the first electrode is connected to the first transparent conductive layer, and the second electrode is connected to the second transparent conductive layer;

[0019] 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.

[0020] Optionally, the charging circuit includes a switch module and a power module for connecting to a power source, 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;

[0021] The control unit controls the switching of the switch module to switch the charging circuit between different working states, so that the power supply module applies different voltages to the first electrode and the second electrode, thereby making the electrochromic layer display different colors.

[0022] Optionally, the charging circuit includes a charging state and a discharging state;

[0023] In the charging state, the switch module is connected to the power module and the first electrode, so that the electrochromic layer presents a first color state; in the discharging state, the switch module is connected to the power module and the second electrode, so that the electrochromic layer presents a second color state.

[0024] Optionally, the switch module includes a first contact and a second contact; the first contact is connected to the power module, and the second contact is grounded;

[0025] In the charging state, the first contact is connected to the first electrode, so that the power module is connected to the first electrode; the second contact is connected to the second electrode, so that the second electrode is grounded;

[0026] In the discharge state, the first contact is conductively connected to the second electrode, so that the power module is conductively connected to the second electrode; the second contact is conductively connected to the first electrode, so that the first electrode is grounded.

[0027] Optionally, the switch module includes a first switch and a second switch that 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;

[0028] In the charging state, the first switch is connected to the first contact so that the first contact is connected to the first electrode; the second switch is connected to the second contact so that the second contact is connected to the second electrode;

[0029] In the discharge state, the first switch is conductively connected to the second contact so that the second contact is conductively connected to the first electrode; the second switch is conductively connected to the first contact so that the first contact is conductively connected to the second electrode.

[0030] Optionally, a diode is further included, wherein the positive electrode of the diode is connected to the power module, and the negative electrode of the diode is connected to the switch module;

[0031] The charging circuit also includes a balanced state. In the balanced state, the switch module is disconnected from the power module and the first electrode, and the electrochromic layer maintains the first color state.

[0032] Optionally, the switch module includes a first contact and a second contact; the first contact is connected to the power module, and the second contact is grounded;

[0033] In the charging state, the first contact is conductively connected to the first electrode, so that the cathode of the diode is conductively connected to the first electrode; the second contact is conductively connected to the second electrode, so that the second electrode is grounded;

[0034] In the discharge state, the first contact is conductively connected to the second electrode, so that the cathode of the diode is conductively connected to the second electrode; the second contact is conductively connected to the first electrode, so that the first electrode is grounded;

[0035] In the equilibrium state, the first contact is disconnected from the first electrode, and the second contact is disconnected from the second electrode.

[0036] Optionally, the switch module includes a first switch and a second switch that 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;

[0037] In the charging state, the first switch is connected to the first contact so that the first contact is connected to the first electrode; the second switch is connected to the second contact so that the second contact is connected to the second electrode;

[0038] In the discharge state, the first switch is connected to the second contact so that the second contact is connected to the first electrode; the second switch is connected to the first contact so that the first contact is connected to the second electrode;

[0039] In the balanced state, the first switch is disconnected from the first contact and the first electrode, and the second contact is disconnected from the second contact and the second electrode.

[0040] Optionally, the power supply module includes a voltage stabilizer, the input end of the voltage stabilizer is connected to the power supply module, and the output end of the voltage stabilizer is connected to the positive electrode of the diode; the voltage stabilizer is used to step down the power supply voltage, and the diode is used to step down the voltage output by the voltage stabilizer to adapt to the working voltage of the electrochromic layer.

[0041] Optionally, the power module includes a voltage stabilizer, an input end of the voltage stabilizer is connected to the power module, and an output end of the voltage stabilizer is connected to the switch module; the voltage stabilizer is used to step down the power supply voltage to adapt to the working voltage of the electrochromic layer.

[0042] Optionally, a terminal shell is further included, wherein the terminal shell includes a rear shell and a middle frame, and the electrochromic module is arranged on the rear shell or the middle frame.

[0043] According to a second aspect of an embodiment of the present disclosure, a control method of a mobile terminal is provided, wherein 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;

[0044] The control method comprises:

[0045] obtaining a voltage difference between the first electrode and the second electrode;

[0046] Determining whether the voltage difference reaches a set threshold;

[0047] When the voltage difference reaches the set threshold, the charging circuit is controlled to charge the electrochromic module.

[0048] Optionally, when the voltage difference reaches the set threshold, controlling the charging circuit to charge the electrochromic module includes:

[0049] When the voltage difference reaches the set threshold, determining the charging parameters required by the electrochromic module according to the voltage difference;

[0050] The charging circuit is controlled to charge the electrochromic module according to the charging parameters.

[0051] Optionally, determining the charging parameters required by the electrochromic module according to the voltage difference includes:

[0052] Determining, based on the voltage difference, a voltage difference between the voltage difference and a target voltage value of the electrochromic module in a target state;

[0053] According to the voltage difference, charging parameters required for the electrochromic module to charge the voltage difference are determined.

[0054] Optionally, the charging parameters include charging duration.

[0055] Optionally, the control method includes:

[0056] Obtaining a first voltage difference between the first electrode and the second electrode when the electrochromic module is in a charging disconnected state or a discharging state;

[0057] Determining whether the first voltage difference reaches a set threshold;

[0058] When the first voltage difference reaches the set threshold, determining a second voltage difference between the first voltage difference and a target voltage value of the electrochromic module in a target state according to the first voltage difference;

[0059] Determining, according to the second voltage difference, a charging time required for the electrochromic module to charge the second voltage difference;

[0060] According to the charging time, the charging circuit is controlled to charge the electrochromic module.

[0061] Optionally, determining the charging time required for the electrochromic module to charge the second voltage difference according to the second voltage difference includes: determining the charging time required for the electrochromic module to charge the second voltage difference according to a corresponding relationship between the charging voltage and the charging time of the electrochromic module; and / or

[0062] The target state includes a fully charged state, and the target voltage value includes a fully charged voltage value.

[0063] The technical solution provided by the embodiments of the present disclosure may have the following beneficial effects:

[0064] It can be seen from the above embodiments that the present disclosure detects the voltage difference between the first electrode and the second electrode of the electrochromic module through the detection module, and the control unit determines 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. It can promptly detect the situation where the display color effect of the electrochromic module becomes lighter, and can promptly charge the electrochromic module to maintain the color effect, thereby keeping the color displayed by the electrochromic module stable.

[0065] It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0066] 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 present disclosure.

[0067] Figure 1 The figure is a structural block diagram of a mobile terminal according to an exemplary embodiment.

[0068] Figure 2 The figure is a schematic structural diagram of an electrochromic module of a mobile terminal according to an exemplary embodiment.

[0069] Figure 3 is a schematic structural diagram of an electrochromic module of a mobile terminal according to another exemplary embodiment.

[0070] Figure 4 The present invention is a structural block diagram of a charging circuit of an electrochromic module of a mobile terminal according to an exemplary embodiment.

[0071] Figure 5 is a structural block diagram of a charging circuit of an electrochromic module of a mobile terminal according to another exemplary embodiment.

[0072] Figure 6is a structural block diagram of a charging circuit of an electrochromic module of a mobile terminal according to yet another exemplary embodiment.

[0073] Figure 7 is a structural block diagram of a charging circuit of an electrochromic module of a mobile terminal according to yet another exemplary embodiment.

[0074] Figure 8 is a structural block diagram of a charging circuit of an electrochromic module of a mobile terminal according to yet another exemplary embodiment.

[0075] Fig. 9 The figure is a flow chart of a method for controlling a mobile terminal according to an exemplary embodiment.

[0076] Fig.10 and Fig.11 It is a partial detailed flow chart of a control method of a mobile terminal according to an exemplary embodiment.

[0077] Fig.12 is a flowchart of a method for controlling a mobile terminal according to another exemplary embodiment. DETAILED DESCRIPTION

[0078] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Instead, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0079] The terms used in this disclosure are for the purpose of describing specific embodiments only and are not intended to limit the disclosure. The singular forms of "a", "said" and "the" used in this disclosure and the appended claims are also intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0080] It should be understood that although the terms first, second, third, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present disclosure, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Depending on the context, the word "if" as used herein may be interpreted as "at the time of" or "when" or "in response to determining".

[0081] At present, the process technology of the terminal shell of mobile terminals such as mobile phones and tablet computers has problems such as high voltage, high power consumption, complex circuit structure, and high cost. The present invention provides a mobile terminal and a control method thereof, which uses electrochromic technology to achieve the color change effect of the shell of electronic devices such as mobile phones. Electrochromic refers to the phenomenon that the optical properties of a material, such as color, transmittance, reflectivity, and absorptivity, undergo stable and reversible changes under the action of an external electric field, which is manifested in the appearance as a reversible change in color and transparency.

[0082] The mobile terminal and the control method thereof disclosed in the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the features of the following embodiments and implementations can be combined with each other.

[0083] See also Figure 1 As shown, 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 10 includes a first electrode 11 and a second electrode 12. The detection module 20 is used to detect the 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 to connect to a power source, 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 value. When the voltage difference reaches the set threshold value, the control unit 40 controls the charging circuit 30 to charge the electrochromic module 10.

[0084] As can be seen from the above embodiments, the present disclosure detects the voltage difference between the first electrode 11 and the second electrode 12 of the electrochromic module 10 through the detection module 20, and the control unit 40 determines whether the voltage difference reaches the set threshold value. When the voltage difference reaches the set threshold value, the control unit 40 controls the charging circuit 30 to charge the electrochromic module 10, and can timely find that the display color effect of the electrochromic module 10 becomes lighter, and can timely charge the electrochromic module 10 to maintain the color effect, so that the color displayed by the electrochromic module 10 remains stable. At the same time, it is also possible to accurately control the power-on time of the electrochromic module 10, adjust the color displayed by the electrochromic module 10, and avoid the electrochromic module 10 from being damaged due to long-term power-on, thereby reducing the risk of damage to the mobile terminal and extending the service life of the mobile terminal, and achieving the beneficial effects of simple structure, low power consumption and low cost.

[0085] See also Figure 2As shown, in some optional embodiments, the electrochromic module 10 may include a first transparent conductive layer 61, an electrochromic layer 62, and a second transparent conductive layer 63 arranged in sequence along the thickness direction of the electrochromic module 10 (which can be understood as the cross-sectional direction from top to bottom). 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. Optionally, the number of the first electrode 11 and the second electrode 12 can be one, or 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 the appearance color switching effect of the terminal shell 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. Copper foil and conductive silver paste have good conductivity. Of course, in other examples, the first electrode 11 and the second electrode 12 can also use other conductive materials, such as conductive gold paste or other conductive metal compounds, which is not limited by the present disclosure.

[0086] It can be understood that the first electrode 11 can be understood as a positive electrode, and the second electrode 12 can be understood as a negative electrode. The power module 32 can be connected to the power supply of the mobile terminal to realize charging of the electrochromic module 10. Optionally, the electrochromic material of the electrochromic layer 62 can include compound materials such as tungsten oxide, molybdenum oxide, titanium oxide, viologen, rare earth phthalocyanine, polypyrrole, polythiophene, polyaniline and its derivatives, and the present disclosure is not limited to this. In the present embodiment, the electrochromic material used in the electrochromic layer is a polythiophene SECF material, which will change from transparent to blue when a +2.5V voltage is applied, and will remain blue without power. After being applied with a -2.5V voltage, it will change from blue to transparent.

[0087] Electrochromic (EC) is a phenomenon in which the optical properties (reflectivity, transmittance, absorptivity, etc.) of a material undergo a stable and reversible color change under the action of an external electric field, which is manifested in appearance as a reversible change in color and transparency. Materials with electrochromic properties are called electrochromic materials. In this embodiment, the first transparent conductive layer 61, the electrochromic layer 62, and the second transparent conductive layer 63 are arranged in sequence from top to bottom. The electrochromic layer 62 may include compound materials such as tungsten oxide, molybdenum oxide, titanium oxide, violaceum, rare earth phthalocyanine, polypyrrole, polythiophene, polyaniline and its derivatives. The first transparent conductive layer 61 and the second transparent conductive layer 63 may be made of materials such as indium tin oxide (ITO), indium oxide, tin oxide, zinc oxide, tin-doped indium oxide, and fluorine-doped tin oxide.

[0088] In some optional embodiments, the first electrode 11 is provided in the first transparent conductive layer 61 and is located inside the electrochromic layer 62. A first through hole (not shown) is provided at the 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 to the outside of the second transparent conductive layer 63 through the first through hole. The number and position of the first through hole are set in a one-to-one correspondence with the number and position of the first electrode 11. The shape and number of the first electrode 11 can be set according to the requirements of the color change speed, color effect, etc. of the electrochromic module, and the present disclosure is not limited to this. The second electrode 12 is provided in the second transparent conductive layer 63 and is located inside the electrochromic layer 62. A second through hole (not shown) is provided at the position of the first transparent conductive layer 61 and the electrochromic layer 62 relative to the second electrode 12, and the second electrode 12 is led out to the outside of the first transparent conductive layer 61 through the second through hole. The number and position of the second through hole are set in a one-to-one correspondence with the number and position of the second electrode 12. The shape and quantity of the second electrode 12 can be set according to the requirements of the electrochromic module such as the color change speed and color effect, and the present disclosure does not limit this. Optionally, the first through hole and the second through hole can be formed by laser punching or mold punching.

[0089] Through the above arrangement, by opening 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 be led out of the second transparent conductive layer 63 through the first through hole, and the second electrode 12 can be led out of the first transparent conductive layer 61 through the second through hole, and the internal space of the electrochromic module is utilized, thereby reducing the space occupied by the electrochromic module, which is conducive to the miniaturization design of the product. There is no need to adopt the method of leading outward and bending, thereby reducing the space occupied by the electrochromic module, which is conducive to the miniaturization design of the product.

[0090] See also Figure 3As shown, in some optional embodiments, the electrochromic module 10 may further include a protective layer 65, a second substrate layer 66, an optical adhesive layer 67 and a cover plate 68. Among them, the first substrate layer 64 is arranged on the side of the second transparent conductive layer 63 away from the electrochromic layer 62, and the first substrate layer 64 can be made of materials such as PET film (polyester film). The protective layer 65 is arranged on the side of the first substrate layer 64 away 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 play an appearance decoration role and improve the aesthetics of the product. The second substrate layer 66 is arranged on the side of the first transparent conductive layer 61 away from the electrochromic layer 62, and the second substrate layer 66 can be made of materials such as PET film (polyester film). The optical adhesive layer 67 is arranged on the side of the second substrate layer 66 away from the electrochromic layer 62. The optical adhesive layer 67 can be made of adhesives such as OCA glue (Optically Clear Adhesive) suitable for bonding transparent optical elements. It can be understood that the first substrate layer 64 can be coated with a first transparent conductive layer 61, and the second substrate layer 66 can be coated with a second transparent conductive layer 63. An electrochromic layer 62 that can change color when powered is added in the middle to form an electrochromic module. The cover plate 68 is arranged on the side of the optical adhesive layer 67 away from the electrochromic layer 62. The cover plate 68 can be made of a transparent base material, including glass, resin, transparent plastic film, etc.

[0091] In some optional embodiments, the first through hole is provided at the position of the second transparent conductive layer 63, the electrochromic layer 62 and the first substrate layer 64 relative 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 second through hole is provided at the position of the first transparent conductive layer 61, the electrochromic layer 62 and the second substrate layer 66 relative 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 the edge of the first transparent conductive layer 61. The first electrode 11 is arranged at the edge of the first transparent conductive layer 61, which can reduce the influence of the first electrode 11 on the color display effect of the electrochromic module. The second electrode 12 is located at the edge of the second transparent conductive layer 63. The second electrode 12 is arranged at the edge of the second transparent conductive layer 63, which can reduce the influence of the second electrode 12 on the color display effect of the electrochromic module.

[0092] In some optional embodiments, the aperture of the first through hole is not larger than the maximum outer diameter of the first electrode 11 to ensure the reliability of the electrical connection between the first electrode 11 and the first transparent conductive layer 61. In the present embodiment, the first electrode 11 may be a long strip structure with a width range of 0.5 to 3 mm. The first through hole is set 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 present 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 to ensure the reliability of the electrical connection between the second electrode 12 and the second transparent conductive layer 63. In the present embodiment, the second electrode 12 may be a long strip structure with a width range of 0.5 to 3 mm. The second through hole is set corresponding to the center position of the second electrode 12. Of course, in other examples, the position of the second through hole may also be set according to actual needs, and the present disclosure does not limit this.

[0093] In some optional embodiments, the first electrode 11 and the second electrode 12 can be formed by a printing process. Optionally, the printing process may include a silk screen process or a pad printing process. The printing process can be selected according to actual needs, and the present disclosure does not limit this. The silk screen copper drum screen pattern is printed on the substrate, which has the advantages of good hand feel and can be printed on a large plane. Pad printing is to transfer the image and text on the steel gravure (or photosensitive rubber gravure) to the substrate through a pad printing head cast with silicone rubber. It can be used for printing on flat surfaces or various molded objects, and has the advantages of being suitable for large and small products and various strange and special-shaped products.

[0094] See also Figure 4 and Figure 5 As shown, in some optional embodiments, the charging circuit 30 may include a switch module 31 and a power module 32 for connecting to 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 switch module 31 to switch so that the charging circuit 30 switches 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, so that the electrochromic layer of the electrochromic module 10 displays different colors.

[0095] In some optional embodiments, the charging circuit 30 includes a charging state and a discharging state. Figure 4 As shown, when the charging circuit 30 is in the charging state, the switch module 31 is connected to the power module 32 and the first electrode 11, so that the electrochromic layer of the electrochromic module 10 presents the first color state. Figure 5As shown, when the charging circuit 30 is in the discharge state, the switch module 31 is connected to the power module 32 and the second electrode 12, so that the electrochromic layer of the electrochromic module 10 presents a second color state. It can be understood that, taking the electrochromic material used in the electrochromic module as polythiophene SECF material as an example, the first color is blue and the second color is transparent.

[0096] Through the above configuration, the charging circuit 30 can switch between the charging state and the discharging state to realize that the electrochromic layer of the electrochromic module 10 presents the first color state or the second color state, thereby realizing the color switching effect of the electrochromic module 10 and meeting the color change requirements of the terminal housing product. In addition, the charging circuit occupies an area of ​​about 14 square millimeters on the main board, which occupies a small space and is conducive to the miniaturization design of the product.

[0097] In some optional embodiments, the charging circuit may further include a voltage regulator (not shown), the input end of the voltage regulator is connected to the power module 32, and the output end of the voltage regulator is connected to the switch module 31. The voltage regulator is used to step down the voltage value of the power supply connected to the power module 32 to adapt to the working voltage of the electrochromic module 10. In this embodiment, the voltage regulator can adopt a low dropout regulator (LDO) with high voltage step-down accuracy and low cost. For example, the voltage value output by the power module 32 is a 6V DC voltage, and the voltage value can be stepped down to a 2.8V or 2.5V DC voltage by the voltage regulator to meet the working voltage of the electrochromic module 10.

[0098] In some optional 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, where GND is used to represent the ground terminal.

[0099] Combination Figure 4 As shown, when the charging circuit 30 is in the charging state, the first contact 33 is connected to the first electrode 11, so that the power module 32 is connected to the first electrode 11. The second contact 34 is connected to the second electrode 12, so that the second electrode 12 is grounded. Assuming that the voltage provided by the power module 32 meets the working voltage of the electrochromic module 10, the potential of the first electrode 11 is greater than the potential of the second electrode 12, so when the charging circuit 30 is in the charging state, the electrochromic module 10 can present the first color state.

[0100] Combination Figure 5As shown, when the charging circuit 30 is in the discharge state, the first contact 33 is connected to the second electrode 12, so that the power module 32 is connected to the second electrode 12. The second contact 34 is connected to the first electrode 11, so that the first electrode 11 is grounded. Assuming that the voltage provided by the power module 32 meets the working voltage of the electrochromic module 10, the potential of the first electrode 11 is less than the potential of the second electrode 12, so when the charging circuit 30 is in the discharge state, the electrochromic module 10 can present the second color state.

[0101] In some optional embodiments, the switch module 31 includes a first switch 35 and a second switch 36 that are switched synchronously, wherein 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, so that it can be switchably connected between the first contact 33 and the first electrode 11. The second switch 36 is a single-pole double-throw switch, so that it can be switchably connected between the second contact 34 and the second electrode 12. The switching of the first switch 35 and the second switch 36 enables the charging circuit 30 to switch between the charging state and the discharging state. In addition, the switch module 31 adopts the above structure, and the charging circuit 30 occupies an area of ​​about 14 square millimeters on the main board, which occupies a small space and is conducive to the miniaturization design of the product.

[0102] Combination Figure 4 As shown, when the charging circuit 30 is in the charging state, the first switch 35 is closed to the left and is connected to the first contact 33, so that the first contact 33 is connected to the first electrode 11, so that the power module 32 is connected to the first electrode 11. The second switch 36 is closed to the left and is connected to the second contact 34, so that the second contact 34 is connected to the second electrode 12, so that the second electrode 12 is grounded. Assuming that the voltage provided by the power module 32 meets the working voltage of the electrochromic module 10, at this time, the potential of the first electrode 11 is greater than the potential of the second electrode 12, so when the charging circuit 30 is in the charging state, the electrochromic module 10 can present the first color state.

[0103] Combination Figure 5As shown, when the charging circuit 30 is in the discharge state, the first switch 35 is closed to the right and is connected to the second contact 34, so that the second contact 34 is connected to the first electrode 11, thereby grounding the first electrode 11. The second switch 36 is closed to the right and is connected to the first contact 33, so that the first contact 33 is connected to the second electrode 12, thereby connecting the power module 32 to the second electrode 12. Assuming that the voltage provided by the power module 32 meets the working voltage of the electrochromic module 10, the potential of the first electrode 11 is less than the potential of the second electrode 12, so when the charging circuit 30 is in the discharge state, the electrochromic module 10 can present the second color state.

[0104] See also Figures 6 to 8 As shown, in some optional embodiments, the charging circuit may further include a diode 50, the positive electrode of the diode 50 is connected to the power module 32, and the negative electrode of the diode 50 is connected to the switch module 31. The charging circuit 30 also includes a balanced state. That is, the charging circuit 30 includes a charging state, a discharging state and a balanced state. When the charging circuit 30 is in a balanced 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 adopts a Schottky diode, which has the advantages of low withstand voltage, fast recovery speed, and short time. The Schottky diode can step down the power module 32 to adapt to the working voltage of the electrochromic module 10.

[0105] Combination Figure 6 As shown, when the charging circuit 30 is in the charging state, the switch module 31 is connected to the power module 32 and the first electrode 11, so that the electrochromic layer of the electrochromic module 10 presents a first color state.

[0106] Combination Figure 8 As shown, when the charging circuit 30 is in a balanced state, the switch module 31 is disconnected from the power module 32 and the first electrode 11, and the electrochromic module 10 is equivalent to having no circuit access. The Schottky diode can maintain the voltage of the first electrode 11 at the voltage when the charging circuit 30 is in a charging state, thereby maintaining the electrochromic module 10 in the first color state.

[0107] Combination Figure 7 As shown, in the discharge state, the switch module 31 is connected to the power module 32 and the second electrode 12, so that the electrochromic layer of the electrochromic module 10 presents a second color state, thereby driving the electrochromic module 10 to switch between the first color state and the second color state and maintain it.

[0108] In some optional embodiments, the charging circuit may further include a diode 50 and a voltage regulator, the input end of the voltage regulator is connected to the power module 32, the output end of the voltage regulator is connected to the positive electrode of the diode 50, and the negative electrode of the diode 50 is connected to the switch module 31. The voltage regulator is used to step down the voltage value of the power module 32, and the diode 50 is used to step down the voltage output by the voltage regulator to adapt the working voltage of the electrochromic module 10. In this embodiment, the voltage regulator can adopt a low dropout regulator (LDO, low dropout regulator), which has high step-down accuracy and low cost. For example, the voltage value output by the power module 32 is a 6V DC voltage, and the voltage value can be stepped down to a 2.8V DC voltage by the voltage regulator, and the diode 50 can further step down the 2.8V DC voltage output by the voltage regulator to a 2.5V DC voltage to meet the working voltage of the electrochromic module 10.

[0109] In some optional 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, where GND is used to represent the grounding terminal. It can be understood that the negative pole of the power supply is grounded.

[0110] Combination Figure 6 As shown, when the charging circuit 30 is in the charging state, the first contact 33 is connected to the first electrode 11, so that the cathode of the diode 50 is connected to the first electrode 11, so that the power module 32 is connected to the first electrode 11. The second contact 34 is connected to the second electrode 12, so that the second electrode 12 is grounded. Assuming that the voltage after the diode 50 is stepped down meets the working voltage of the electrochromic module 10, the potential of the first electrode 11 is greater than the potential of the second electrode 12, so when the charging circuit 30 is in the charging state, the electrochromic module 10 can present the first color state.

[0111] Combination Figure 8 As shown, 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 circuit connected, and the Schottky diode can maintain the voltage of the first electrode 11 at the voltage when the charging circuit 30 is in a charging state, so the electrochromic module 10 can maintain the first color state.

[0112] Combination Figure 7As shown, when the charging circuit 30 is in the discharge state, the first contact 33 is connected to the second electrode 12, so that the cathode of the diode 50 is connected to the second electrode 12, so that the power module 32 is connected to the second electrode 12. The second contact 34 is connected to the first electrode 11, so that the first electrode 11 is grounded. Assuming that the voltage after the diode 50 is stepped down meets the working voltage of the electrochromic module 10, the potential of the first electrode 11 is less than the potential of the second electrode 12, so when the charging circuit 30 is in the discharge state, the electrochromic module 10 can present the second color state.

[0113] In some optional embodiments, the switch module 31 includes a first switch 35 and a second switch 36 that are switched synchronously, wherein 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, so that it can be switchably connected between the first contact 33 and the first electrode 11. The second switch 36 is a single-pole double-throw switch, so that it can be switchably connected between the second contact 34 and the second electrode 12. The switching of the first switch 35 and the second switch 36 enables the charging circuit to switch between the charging state and the discharging state.

[0114] Combination Figure 6 As shown, when the charging circuit 30 is in the charging state, the first switch 35 is closed to the left and is connected to the first contact 33, so that the first contact 33 is connected to the first electrode 11, and the cathode of the diode 50 is connected to the first electrode 11, so that the power module 32 is connected to the first electrode 11. The second switch 36 is closed to the left and is connected to the second contact 34, so that the second contact 34 is connected to the second electrode 12, so that the second electrode 12 is grounded. Assuming that the voltage after the diode 50 is stepped down meets the working voltage of the electrochromic module 10, the potential of the first electrode 11 is greater than the potential of the second electrode 12, so when the charging circuit 30 is in the charging state, the electrochromic module 10 can present the first color state.

[0115] Combination Figure 8 As shown, 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 circuit connected, and the Schottky diode can maintain the voltage of the first electrode 11 at the voltage when the charging circuit 30 is in a charging state, so the electrochromic module 10 can maintain the first color state.

[0116] Combination Figure 7 As shown, when the charging circuit 30 is in the discharge state, the first switch 35 is closed to the right and is connected to the second contact 34, so that the second contact 34 is connected to the first electrode 11, thereby grounding the first electrode 11. The second switch 36 is closed to the right and is connected to the first contact 33, so that the first contact 33 is connected to the second electrode 12, so that the cathode of the diode 50 is connected to the second electrode 12, so that the power module 32 is connected to the second electrode 12. Assuming that the voltage after the diode 50 is stepped down meets the working voltage of the electrochromic module 10, the potential of the first electrode 11 is less than the potential of the second electrode 12, so when the charging circuit 30 is in the discharge state, the electrochromic module 10 can present the second color state.

[0117] 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 a 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 a set threshold, the control unit 40 determines the charging parameters required for 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 parameters.

[0118] Through the above settings, the control unit 40 compares and determines 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 parameters required for 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 parameters, so that the electrochromic module 10 can be found in time that the power-off time of the electrochromic module 10 is too long, resulting in the color effect becoming lighter, and the electrochromic module 10 can be charged in time to maintain the color effect. Optionally, the mobile terminal may include a terminal housing, the terminal housing includes a rear housing and a middle frame, and the electrochromic module 10 may be arranged in the rear housing or the middle frame, so as to achieve the change of the appearance color effect of the rear housing of the terminal housing or the color effect of the middle frame. The detection module 20 may include an ADC converter, that is, 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. Optionally, the set threshold value may be 1V-1.5V, which is set according to actual needs, and the present disclosure does not limit this.

[0119] In some optional embodiments, the charging parameter includes at least one of charging duration, charging time, and charging pre-reached voltage value. In this embodiment, taking the charging parameter including charging duration as an example, 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:

[0120] The detection module 20 detects a first voltage difference ΔV1 between the first electrode 11 and the second electrode 12 when the electrochromic module 10 is in a charging disconnection state or a discharging state.

[0121] The control unit 40 determines the second voltage difference ΔV2 between the first voltage difference ΔV1 and the target voltage value V2 of the electrochromic module 10 in the target state according to the first voltage difference ΔV1, wherein ΔV2=V2-ΔV1. It can be understood that the charging disconnection state can be understood as any time after the electrochromic module is disconnected from charging, and the discharging state can be understood as any time after the electrochromic module starts discharging. The first voltage difference ΔV1 can represent the voltage value corresponding to the electrochromic module at any time of the charging disconnection state or the discharging state. Optionally, the target state can be a fully charged state, and the target voltage value V2 can be a fully charged voltage value. Taking the target state as a fully charged state and the charging disconnection state as 1 hour after the electrochromic module is disconnected from charging or starts discharging as an example, the second voltage difference ΔV2 is the voltage difference between the voltage value corresponding to the electrochromic module at that moment and the first voltage difference ΔV1 between the first electrode 11 and the second electrode 12 1 hour ago.

[0122] The control unit 40 determines the charging time T1 required for the electrochromic module 10 to charge the second voltage difference ΔV2 according to the second voltage difference ΔV2. It should be noted that the corresponding relationship between the charging voltage and the charging time of the electrochromic modules of different materials is different due to factors such as the concentration of the sample. The corresponding relationship between the charging voltage and the charging time of various materials that can be used for the electrochromic module can be tested in advance and made into a corresponding relationship table, which is stored in the control unit 40. Optionally, the control unit 40 can determine the charging time T1 required for the electrochromic module 10 to charge the second voltage difference ΔV2 by a table lookup method according to the corresponding relationship between the charging voltage and the charging time of the electrochromic module 10. For example, the time required for the electrochromic module 10 to charge 1V is 0.5 hours, the time required for charging 0.5V is 0.2 hours, etc. The corresponding relationship between the charging voltage and the charging time of the electrochromic module is tested and made into a corresponding relationship table.

[0123] The control unit 40 controls the charging circuit 30 to charge the electrochromic module 10 according to the charging time T1. Assume that the target state is a fully charged state, the fully charged voltage value is 2.5V, the charging disconnection state is 1 hour after the electrochromic module is disconnected from charging, or the discharge state is 1 hour after the electrochromic module starts to discharge, and the first voltage difference ΔV1 between the first electrode 11 and the second electrode 12 is 1.2V 1 hour ago, for example, then the second voltage difference ΔV2 is 2.5V-1.2V=1.3V. The control unit 40 determines that the charging time T1 required for the electrochromic module 10 to charge the second voltage difference ΔV2 is 30 minutes by a table lookup method according to the corresponding relationship between the charging voltage and the charging time of the electrochromic module 10. The control unit 40 controls the charging circuit 30 to charge the electrochromic module 10 for 30 minutes according to the charging time T1, so that the electrochromic module 10 reaches a fully charged state. It should be noted that the target state may also be any state other than the fully charged state. The voltage of the electrochromic module 10 can be charged to the required voltage value by the above method, which can be set according to actual needs, and the present disclosure does not limit this.

[0124] Therefore, in the mobile terminal provided by 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 periodically reports it to the control unit 40. The reporting period can be set according to actual needs. The electrochromic module 10 usually displays a transparent color. When it is necessary to adjust the electrochromic module 10 to blue, the control unit 40 switches the state of the charging circuit 30 to the charging state, such as Figure 6 As shown, the charging circuit 30 is controlled according to the determined charging parameters to charge the electrochromic module 10 to 2.5V, so that the electrochromic module 10 gradually changes from transparent color to blue, and then the housing of the mobile terminal displays blue.

[0125] In order to prevent the electrochromic module 10 from being damaged due to long-term charging, the control unit 40 switches the state of the charging circuit 30 to a balanced state, such as Figure 8 As shown, at this time, the voltage of the electrochromic module 10 gradually drops to 1.5V and maintains the state of displaying blue. However, after a long period of charging and disconnection or discharge, the voltage of the electrochromic module 10 will gradually lose and decrease, and the displayed color will gradually fade. Therefore, in order to avoid this situation, the control unit 40 can control the charging circuit 30 to charge the electrochromic module 10 to a full charge state and then disconnect it according to actual needs and determined charging parameters, so that the electrochromic module 10 always displays blue. When the color displayed by the electrochromic module 10 becomes lighter, the control unit 40 controls the charging circuit 30 to charge the electrochromic module 10 to a full charge state according to the charging parameters to maintain the color displayed by the electrochromic module 10.

[0126] When the user needs to change the housing of the mobile terminal from blue to transparent, the control unit 40 switches the state of the charging circuit 30 to the discharging state, such as Figure 7 As shown, according to the determined discharge parameters, the charging circuit 30 is controlled to discharge the electrochromic module 10 to a desired state, so that the electrochromic module 10 gradually changes from blue to transparent, thereby realizing precise control of the charging, discharging and color change control of the electrochromic module.

[0127] The disclosed embodiment also provides a control method of a mobile terminal, the mobile terminal comprising an electrochromic module and a charging circuit, the electrochromic module comprising a first electrode and a second electrode, the charging circuit being connected to the first electrode and the second electrode. It should be noted that the description of the mobile terminal in the above embodiments and implementation methods is also applicable to the control method of this embodiment.

[0128] See also Figure 1 and Fig. 9 As shown, the control method may include the following steps:

[0129] Step S11: Obtaining the voltage difference between the first electrode 11 and the second electrode 12 of the electrochromic module 10. Optionally, the voltage difference between the first electrode 11 and the second electrode 12 of the electrochromic module 10 can be detected by a detection module. The detection module can include an ADC converter, that is, an analog-to-digital converter, A / D converter, which can include a detection circuit.

[0130] Step S12: Determine whether the voltage difference between the first electrode 11 and the second electrode 12 of the electrochromic module 10 reaches a set threshold. Optionally, the control unit can compare and determine whether the voltage difference between the first electrode 11 and the second electrode 12 of the electrochromic module 10 reaches a set threshold. 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 a set threshold, and determining whether the voltage difference reaches the set threshold. Optionally, the set threshold may be 1V-1.5V, which is set according to actual needs, and the present disclosure does not limit this.

[0131] Step S13: When the voltage difference reaches the set threshold, the charging circuit 30 is controlled to charge the electrochromic module 10. Optionally, the charging circuit 30 may be controlled to charge the electrochromic module 10 by a control unit.

[0132] As can be seen from the above embodiments, the present disclosure detects the voltage difference between the first electrode 11 and the second electrode 12 of the electrochromic module 10 to determine whether the voltage difference reaches a set threshold value. When the voltage difference reaches the set threshold value, the charging circuit 30 is controlled to charge the electrochromic module 10, so that the color effect of the electrochromic module 10 becomes lighter can be found in time, and the electrochromic module 10 can be charged in time to maintain the color effect, so that the color displayed by the electrochromic module 10 remains stable. At the same time, 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-term power-on, thereby reducing the risk of damage to the mobile terminal and extending the service life of the mobile terminal, achieving the beneficial effects of simple structure, low power consumption and low cost.

[0133] See also Fig.10 As shown, in some optional embodiments, in the above step S13, when the voltage difference reaches the set threshold, controlling the charging circuit 30 to charge the electrochromic module 10 may further include:

[0134] Step S131: when it is determined by comparison that the voltage difference between the first electrode 11 and the second electrode 12 reaches the set threshold, the charging parameters required by the electrochromic module 10 are determined according to the voltage difference.

[0135] Step S132: controlling the charging circuit 30 to charge the electrochromic module 10 according to the charging parameters.

[0136] Through the above method, the control unit 40 compares and determines 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 parameters required for 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 parameters. It can timely discover the situation where the color effect becomes lighter due to the power-off time of the electrochromic module 10 being too long, and the electrochromic module 10 can be charged in time to maintain the color effect.

[0137] See also Fig.11 As shown, in some optional embodiments, in the above step S131, determining the charging parameters required for the electrochromic module 10 according to the voltage difference may further include:

[0138] Step S1311: determining a voltage difference between the voltage difference and a target voltage value of the electrochromic module 10 in a target state according to the voltage difference.

[0139] Step S1312: Determine charging parameters required for charging the electrochromic module 10 with the voltage difference according to the voltage difference.

[0140] In some optional embodiments, the charging parameter includes at least one of a charging duration, a charging time, and a charging pre-reaching voltage value. The charging circuit 30 may include at least one of a charging disconnection state and a discharging state. In this embodiment, the charging parameter includes the charging duration as an example.

[0141] See also Fig.12 As shown, when the charging circuit 30 is in the charging disconnection state, the control method may further include:

[0142] Step S111: obtaining a first voltage difference ΔV1 between the first electrode 11 and the second electrode 12 when the electrochromic module 10 is in a charging disconnection state or a discharging state. Optionally, the first voltage difference ΔV1 may be obtained by detection by the detection module.

[0143] Step S112: Determine whether the first voltage difference ΔV1 reaches a set threshold. Optionally, the control unit may compare and determine whether the first voltage difference ΔV1 reaches a set threshold.

[0144] Step S113: When the first voltage difference ΔV1 reaches the set threshold, the second voltage difference ΔV2 between the first voltage difference ΔV1 and the target voltage value of the electrochromic module 10 in the target state is determined according to the first voltage difference ΔV1, wherein ΔV2=V2-ΔV1. It can be understood that the charging disconnection state can be understood as any time after the electrochromic module is disconnected from charging, and the discharging state can be understood as any time after the electrochromic module starts discharging. The first voltage difference ΔV1 can represent the voltage value corresponding to the electrochromic module at any time of the charging disconnection state or the discharging state. Optionally, the target state can be a fully charged state, and the target voltage value V2 can be a fully charged voltage value. Taking the target state as a fully charged state and the charging disconnection state as 1 hour after the electrochromic module is disconnected from charging or starts discharging as an example, the second voltage difference ΔV2 is the voltage difference between the voltage value corresponding to the electrochromic module at that moment and the first voltage difference ΔV1 between the first electrode 11 and the second electrode 12 1 hour ago.

[0145] Step S114: Determine the charging time T1 required for the electrochromic module 10 to charge the second voltage difference ΔV2 according to the second voltage difference ΔV2. It should be noted that the corresponding relationship between the charging voltage and the charging time of the electrochromic modules of different materials is different due to factors such as the concentration of the example. The corresponding relationship between the charging voltage and the charging time of various materials that can be used for the electrochromic module can be tested in advance and made into a corresponding relationship table, which is stored in the control unit 40. Optionally, the control unit 40 can determine the charging time T1 required for the electrochromic module 10 to charge the second voltage difference ΔV2 by a table lookup method according to the corresponding relationship between the charging voltage and the charging time of the electrochromic module 10. For example, the time required for the electrochromic module 10 to charge 1V is 0.5 hours, the time required for charging 0.5V is 0.2 hours, etc. The corresponding relationship between the charging voltage and the charging time of the electrochromic module is tested and made into a corresponding relationship table.

[0146] Step S115: Control the charging circuit 30 to charge the electrochromic module 10 according to the charging time T1. Optionally, the charging circuit 30 can be controlled by the control unit to charge the electrochromic module 10. For example, the target state is a fully charged state, the fully charged voltage value is 2.5V, the charging disconnection state is 1 hour after the electrochromic module is disconnected from charging, or the discharge state is 1 hour after the electrochromic module starts to discharge, and the first voltage difference ΔV1 between the first electrode 11 and the second electrode 12 is 1.2V 1 hour ago, then the second voltage difference ΔV2 is 2.5V-1.2V=1.3V. The control unit 40 determines that the charging time T1 required for the electrochromic module 10 to charge the second voltage difference ΔV2 is 30 minutes by a table lookup method based on the corresponding relationship between the charging voltage and the charging time of the electrochromic module 10. The control unit 40 controls the charging circuit 30 to charge the electrochromic module 10 for 30 minutes according to the charging time T1, so that the electrochromic module 10 reaches a fully charged state. It should be noted that the target state can also be any state other than the fully charged state. The voltage of the electrochromic module 10 can be charged to a required voltage value through the above method, which can be set according to actual needs, and the present disclosure does not limit this.

[0147] Therefore, in the mobile terminal provided by 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 periodically reports it to the control unit 40. The reporting period can be set according to actual needs. The electrochromic module 10 usually displays a transparent color. When it is necessary to adjust the electrochromic module 10 to blue, the control unit 40 switches the state of the charging circuit 30 to the charging state, such as Figure 6As shown, the charging circuit 30 is controlled according to the determined charging parameters to charge the electrochromic module 10 to 2.5V, so that the electrochromic module 10 gradually changes from transparent color to blue, and then the housing of the mobile terminal displays blue.

[0148] In order to prevent the electrochromic module 10 from being damaged due to long-term charging, the control unit 40 switches the state of the charging circuit 30 to a balanced state, such as Figure 8 As shown, at this time, the voltage of the electrochromic module 10 gradually drops to 1.5V and maintains the state of displaying blue. However, after a long period of charging and disconnection or discharge, the voltage of the electrochromic module 10 will gradually lose and decrease, and the displayed color will gradually fade. Therefore, in order to avoid this situation, the control unit 40 can control the charging circuit 30 to charge the electrochromic module 10 to a full charge state and then disconnect it according to actual needs and determined charging parameters, so that the electrochromic module 10 always displays blue. When the color displayed by the electrochromic module 10 becomes lighter, the control unit 40 controls the charging circuit 30 to charge the electrochromic module 10 to a full charge state according to the charging parameters to maintain the color displayed by the electrochromic module 10.

[0149] When the user needs to change the housing of the mobile terminal from blue to transparent, the control unit 40 switches the state of the charging circuit 30 to the discharging state, such as Figure 7 As shown, according to the determined discharge parameters, the charging circuit 30 is controlled to discharge the electrochromic module 10 to a desired state, so that the electrochromic module 10 gradually changes from blue to transparent, thereby realizing precise control of the charging, discharging and color change control of the electrochromic module.

[0150] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the disclosure disclosed herein. The present disclosure is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary techniques in the art that are not disclosed in the present disclosure. The description and examples are to be considered exemplary only, and the true scope and spirit of the present disclosure are indicated by the following claims.

[0151] It should be understood that the present disclosure is not limited to the exact structures that have been 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, characterized in that: include: 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 charging circuit includes a switch module and a power module for connecting a power source, the switch module includes a first contact and a second contact; the first contact is connected to the power module, and the second contact is grounded; the switch module includes a first switch and a second switch that 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; The detection module is used to detect the voltage difference between the first electrode and the second electrode, and is connected to the first electrode, the second electrode and the control unit; The charging circuit is used to connect to a power source, and is connected to the first electrode, the second electrode and the control unit; The control unit determines 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 charging circuit includes a charging state and a discharging state; In the charging state, the first switch is connected to the first contact so that the first contact is connected to the first electrode; the second switch is connected to the second contact so that the second contact is connected to the second electrode; In the discharge state, the first switch is conductively connected to the second contact so that the second contact is conductively connected to the first electrode; the second switch is conductively connected to the first contact so that the first contact is conductively connected to the second electrode.

2. The mobile terminal according to claim 1, characterized in that: 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, 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.

3. The mobile terminal according to claim 2, characterized in that: The charging parameters include charging time.

4. The mobile terminal according to claim 3, characterized in that: 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, including: Obtaining, by the detection module, a first voltage difference between the first electrode and the second electrode when the electrochromic module is in a charging disconnection state or a discharging state; The control unit determines, according to the first voltage difference, a second voltage difference between the first voltage difference and a target voltage value of the electrochromic module in a target state; The control unit determines the charging time required for the electrochromic module to charge the second voltage difference according to the second voltage difference; The control unit controls the charging circuit to charge the electrochromic module according to the charging duration.

5. The mobile terminal according to claim 4, characterized in that: The control unit determines the charging time required for the electrochromic module to charge the second voltage difference according to the second voltage difference, including: the control unit determines the charging time required for the electrochromic module to charge the second voltage difference according to the corresponding relationship between the charging voltage and the charging time of the electrochromic module; and / or The target state includes a fully charged state, and the target voltage value includes a fully charged voltage value.

6. The mobile terminal according to claim 1, characterized in that: 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 to the first transparent conductive layer, and the second electrode is connected to 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.

7. The mobile terminal according to claim 6, characterized in that: 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 switching of the switch module to switch the charging circuit between different working states, so that the power supply module applies different voltages to the first electrode and the second electrode, thereby making the electrochromic layer display different colors.

8. The mobile terminal according to claim 7, characterized in that: In the charging state, the switch module is connected to the power module and the first electrode, so that the electrochromic layer presents a first color state; in the discharging state, the switch module is connected to the power module and the second electrode, so that the electrochromic layer presents a second color state.

9. The mobile terminal according to claim 8, characterized in that: In the charging state, the first contact is electrically connected to the first electrode, so that the power module is electrically connected to the first electrode; the second contact is electrically connected to the second electrode, so that the second electrode is grounded; In the discharge state, the first contact is conductively connected to the second electrode, so that the power module is conductively connected to the second electrode; the second contact is conductively connected to the first electrode, so that the first electrode is grounded.

10. The mobile terminal according to claim 8, characterized in that: It also includes a diode, wherein the positive electrode of the diode is connected to the power module, and the negative electrode of the diode is connected to the switch module; The charging circuit also includes a balanced state. In the balanced state, the switch module is disconnected from the power module and the first electrode, and the electrochromic layer maintains the first color state.

11. The mobile terminal according to claim 10, characterized in that: The switch module includes a first contact and a second contact; the first contact is connected to the power module, and the second contact is grounded; In the charging state, the first contact is conductively connected to the first electrode, so that the cathode of the diode is conductively connected to the first electrode; The second contact is electrically connected to the second electrode so that the second electrode is grounded; In the discharge state, the first contact is conductively connected to the second electrode, so that the cathode of the diode is conductively connected to the second electrode; the second contact is conductively connected to the first electrode, so that the first electrode is grounded; In the equilibrium state, the first contact is disconnected from the first electrode, and the second contact is disconnected from the second electrode.

12. The mobile terminal according to claim 11, characterized in that: The switch module comprises a first switch and a second switch which are switched synchronously, wherein 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 connected to the first contact so that the first contact is connected to the first electrode; the second switch is connected to the second contact so that the second contact is connected to the second electrode; In the discharge state, the first switch is connected to the second contact so that the second contact is connected to the first electrode; the second switch is connected to the first contact so that the first contact is connected to the second electrode; In the balanced state, the first switch is disconnected from the first contact and the first electrode, and the second switch is disconnected from the second contact and the second electrode.

13. The mobile terminal according to any one of claims 10 to 12, characterized in that: The power supply module includes a voltage stabilizer, the input end of the voltage stabilizer is connected to the power supply module, and the output end of the voltage stabilizer is connected to the positive electrode of the diode; the voltage stabilizer is used to step down the power supply voltage, and the diode is used to step down the voltage output by the voltage stabilizer to adapt to the working voltage of the electrochromic layer.

14. The mobile terminal according to any one of claims 8 to 9, characterized in that: The power module includes a voltage stabilizer, the input end of the voltage stabilizer is connected to the power module, and the output end of the voltage stabilizer is connected to the switch module; the voltage stabilizer is used to step down the power supply voltage to adapt to the working voltage of the electrochromic layer.

15. The mobile terminal according to claim 1, characterized in that: It also includes a terminal shell, which includes a rear shell and a middle frame, and the electrochromic module is arranged on the rear shell or the middle frame.

16. A control method for a mobile terminal, characterized in that: 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 charging circuit includes a switch module and a power module for connecting a power source, the switch module includes a first contact and a second contact; the first contact is connected to the power module, and the second contact is grounded; the switch module includes a first switch and a second switch that 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; The control method comprises: obtaining a voltage difference between the first electrode and the second electrode; Determining whether the voltage difference reaches a set threshold; When the voltage difference reaches the set threshold, controlling the charging circuit to charge the electrochromic module; The charging circuit includes a charging state and a discharging state; In the charging state, the first switch is connected to the first contact so that the first contact is connected to the first electrode; the second switch is connected to the second contact so that the second contact is connected to the second electrode; In the discharge state, the first switch is conductively connected to the second contact so that the second contact is conductively connected to the first electrode; the second switch is conductively connected to the first contact so that the first contact is conductively connected to the second electrode.

17. The control method according to claim 16, characterized in that: When the voltage difference reaches the set threshold, controlling the charging circuit to charge the electrochromic module includes: When the voltage difference reaches the set threshold, determining the charging parameters required by the electrochromic module according to the voltage difference; The charging circuit is controlled to charge the electrochromic module according to the charging parameters.

18. The control method according to claim 17, characterized in that: The step of determining the charging parameters required by the electrochromic module according to the voltage difference includes: Determining, based on the voltage difference, a voltage difference between the voltage difference and a target voltage value of the electrochromic module in a target state; According to the voltage difference, charging parameters required for the electrochromic module to charge the voltage difference are determined.

19. The control method according to claim 18, characterized in that: The charging parameters include charging time.

20. The control method according to claim 19, characterized in that: The control method comprises: Obtaining a first voltage difference between the first electrode and the second electrode when the electrochromic module is in a charging disconnected state or a discharging state; Determining whether the first voltage difference reaches a set threshold; When the first voltage difference reaches the set threshold, determining a second voltage difference between the first voltage difference and a target voltage value of the electrochromic module in a target state according to the first voltage difference; Determining, according to the second voltage difference, a charging time required for the electrochromic module to charge the second voltage difference; According to the charging time, the charging circuit is controlled to charge the electrochromic module.

21. The control method according to claim 20, characterized in that: Determining the charging time required for the electrochromic module to charge the second voltage difference according to the second voltage difference includes: determining the charging time required for the electrochromic module to charge the second voltage difference according to the corresponding relationship between the charging voltage and the charging time of the electrochromic module; and / or The target state includes a fully charged state, and the target voltage value includes a fully charged voltage value.

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