Refrigerator

Abstract

The embodiment of the utility model belongs to the refrigeration technology, and provides a refrigerator which comprises a refrigerator body, a refrigerator door and a refrigerator door. A temperature sensor; a display module; the controller is used for obtaining the temperature, collected by the temperature sensor, of the refrigeration chamber and controlling the display module to display the temperature of the refrigeration chamber; a power supply module; the first power supply interface is connected with the power module; the second power supply interface is connected with an external standby power supply; the power supply detection module is respectively connected with the first power supply interface, the second power supply interface, the controller, the display module and the temperature sensor; the power supply detection module and the second power supply interface form a second power supply path for supplying power to the controller, the display module and the temperature sensor by an external standby power supply; and the power supply detection module is used for conducting a second power supply path under the condition that the mains supply is not connected and the external standby power supply is connected, so that the controller controls the display module to display the temperature, collected by the temperature sensor, of the refrigeration chamber. The temperature of the refrigeration chamber can be displayed under the condition of power failure.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of refrigeration equipment. More particularly, a refrigerator is disclosed. BACKGROUND

[0002] Users will use the refrigeration compartment of the refrigerator to refrigerate or freeze food to prolong the storage time of the food. However, when the power is off, the refrigerator cannot display the temperature of the refrigeration compartment, and the user cannot know whether the current temperature of the refrigeration compartment is still suitable for storing food. If the door of the refrigeration compartment is opened for observation, the temperature of the refrigeration compartment will rise faster, and the food will be more likely to deteriorate, and the user's experience is not good. CONTENT OF THE INVENTION

[0003] Embodiments of the present application provide a refrigerator to display the temperature of the refrigeration compartment in the case of power failure, and improve the user's experience.

[0004] Embodiments of the present application provide a refrigerator, comprising:

[0005] a cabinet configured with at least one refrigeration compartment;

[0006] a temperature sensor arranged in the refrigeration compartment;

[0007] a display module arranged on the cabinet;

[0008] a controller connected with the temperature sensor and the display module, configured to acquire the temperature of the refrigeration compartment collected by the temperature sensor, and control the display module to display the temperature of the refrigeration compartment;

[0009] a power module connected with the commercial power, configured to supply power to the refrigerator through the commercial power;

[0010] a first power supply interface connected with the power module;

[0011] a second power supply interface configured to be connected with an external backup power supply;

[0012] a power supply detection module connected with the first power supply interface, the second power supply interface, the controller, the display module and the temperature sensor respectively;

[0013] the power supply detection module and the first power supply interface form a first power supply path for supplying power to the controller, the display module and the temperature sensor; the power supply detection module and the second power supply interface form a second power supply path for supplying power to the controller, the display module and the temperature sensor; so that the controller controls the display module to display the temperature of the refrigeration compartment collected by the temperature sensor in the case that the first power supply path is conducted, or in the case that the second power supply path is conducted;

[0014] The power supply detection module is configured to turn on the first power supply path when the commercial power is connected, or turn on the second power supply path when the commercial power is not connected and the external backup power is connected.

[0015] In some embodiments, the power supply detection module comprises:

[0016] The first switch circuit is connected with the first power supply interface and is configured to be turned on when the first power supply interface has an input of electric energy, so as to turn on the first power supply path.

[0017] The second switch circuit is connected with the first power supply interface and the second power supply interface and is configured to be turned on when the first power supply interface has no input of electric energy and the second power supply interface has an input of electric energy, so as to turn on the second power supply path.

[0018] In some embodiments, the first switch circuit comprises a first switch tube and a first switch unit.

[0019] The first power supply interface is connected with the first switch tube and the first switch unit respectively, the first switch tube is connected with the first switch unit, and the first switch unit is grounded.

[0020] When the first power supply interface has an input of electric energy, the first switch unit is configured to provide a turn-on voltage to the first switch tube, so as to turn on the first switch tube.

[0021] In some embodiments, the first switch unit comprises a second switch tube, a first resistor and a second resistor.

[0022] The second switch tube is connected with the first switch tube, the second switch tube is connected with the first power supply interface through the first resistor, the second resistor is connected with the first power supply interface, and the second switch tube and the second resistor are grounded respectively.

[0023] In some embodiments, the second switch circuit comprises a third switch tube and a third resistor.

[0024] The third switch tube is connected with the first power supply interface, the second power supply interface and the first switch tube respectively.

[0025] One end of the first resistor is connected with the first power supply interface, and the other end of the first resistor is grounded.

[0026] In some embodiments, the power supply detection module further comprises a detection circuit.

[0027] The detection circuit is connected with the third switch tube, the first switch tube and the controller, and is configured to output a first power supply signal to the controller when the first power supply interface has power input, or output a second power supply signal to the controller when the first power supply interface has no power input and the second power supply interface has power input.

[0028] In some embodiments, the detection circuit comprises a fourth switch tube, a fourth resistor and a fifth resistor.

[0029] The fourth switch tube is connected with the fourth resistor, the fifth resistor and the controller respectively, the fifth resistor is connected with the third switch tube, the sixth resistor is connected with the first switch tube, and the fourth switch tube is further grounded.

[0030] The fourth switch tube is configured to be turned off to output the first power supply signal when the first power supply interface has power input, and is configured to be turned on to output the second power supply signal when the first power supply interface has no power input and the second power supply interface has power input.

[0031] In some embodiments, the second switch circuit further comprises a fifth switch tube.

[0032] The fifth switch tube is connected with the first power supply interface, the third switch tube, the first switch tube and the fourth resistor respectively.

[0033] The fifth switch tube is configured to be turned off to prevent the power input by the first power supply interface from flowing back to the fourth switch tube when the first power supply interface has power input.

[0034] In some embodiments, the first switch tube, the third switch tube and the fifth switch tube are Metal-Oxide-Semiconductor Field-Effect Transistors (MOSFETs, MOS for short), and the second switch tube and the fourth switch tube are triodes.

[0035] In some embodiments, the controller only performs temperature display of the refrigeration compartment when the second power supply signal is received.

[0036] In some embodiments, the refrigerator comprises at least two refrigeration compartments, and the display module further comprises a switching control.

[0037] The switching control is configured to send a switching signal to the controller in response to a user's trigger.

[0038] The controller is further configured to control the display module to switch to display the temperature of the next refrigeration compartment when a switching signal sent by the switching control is received.

[0039] In some embodiments, the refrigerator further comprises a door body rotatably connected to the cabinet to open or close the refrigeration compartment.

[0040] The display module and the second power supply interface are arranged on the door body shell.

[0041] The refrigerator provided by the embodiments of the present application comprises a cabinet configured with at least one refrigeration compartment; a temperature sensor arranged in the refrigeration compartment and configured to collect the temperature of the refrigeration compartment; a display module arranged on the cabinet and configured to display the temperature of the refrigeration compartment; a controller connected to the temperature sensor and the display module, configured to acquire the temperature of the refrigeration compartment collected by the temperature sensor and control the display module to display the temperature of the refrigeration compartment; a power supply module connected to a commercial power supply and configured to supply power; a first power supply interface connected to the power supply module; a second power supply interface configured to be connected to an external backup power supply; a power supply detection module connected to the first power supply interface, the second power supply interface, the controller, the display module and the temperature sensor; the power supply detection module and the first power supply interface form a first power supply path for supplying power to the controller, the display module and the temperature sensor; the power supply detection module and the second power supply interface form a second power supply path for supplying power to the controller, the display module and the temperature sensor, so that the controller controls the display module to display the temperature of the refrigeration compartment collected by the temperature sensor in the case that the first power supply path is turned on or in the case that the second power supply path is turned on; the power supply detection module is configured to turn on the first power supply path in the case that the commercial power supply is connected, or turn on the second power supply path in the case that the commercial power supply is not connected and the external backup power supply is connected. When the commercial power supply is cut off, the external power supply and the second power supply path supply power, so that the controller, the temperature sensor and the display module can normally operate in the case that the commercial power supply is cut off, so that the controller can control the display module to display the temperature of the refrigeration compartment collected by the temperature sensor. That is, the refrigerator can still display the temperature of the refrigeration compartment in the case that the commercial power supply is cut off, which effectively improves the user experience. BRIEF DESCRIPTION OF DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present application or the implementation manners in the related art, the drawings needed to be used in the embodiments or related art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0043] Figure 1 A structure diagram of a refrigerator according to the present application Figure One ;

[0044] Figure 2 A structure diagram of a refrigerator according to the present application Figure Two ;

[0045] Figure 3 A structure diagram of a refrigerator according to the present application Figure Three ;

[0046] Figure 4 A structure diagram of a power supply of a refrigerator according to the present application ;

[0047] Figure 5 A structure diagram of a power supply of a refrigerator according to the present application ;

[0048] Figure 6 A structure diagram of a power supply detection module according to the present application Figure One ;

[0049] Figure 7 A structure diagram of a power supply detection module according to the present application Figure Two ;

[0050] Figure 8 A structure diagram of a power supply detection module according to the present application Figure Three ;

[0051] Figure 9 A structure diagram of a power supply detection module according to the present application Figure Four ;

[0052] Figure 10 A structure diagram of a power supply detection module according to the present application Figure Five ;

[0053] Figure 11 A structure diagram of a power supply detection module according to the present application Figure Six ;

[0054] Figure 12 A structure diagram of a refrigerator according to the present application Figure Four .

[0055] The specific embodiments of the present application have been shown by the above-described drawings, and will be described in more detail hereinafter. These drawings and written descriptions are not intended to limit the scope of the concept of the present application by any means, but to explain the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0056] In order to make the purposes, implementations and advantages of the present application clearer, the following will clearly and completely describe the exemplary implementations of the present application in conjunction with the accompanying drawings in the exemplary embodiments of the present application. Obviously, the described exemplary embodiments are only a part of the embodiments of the present application, but not all the embodiments of the present application.

[0057] It should be noted that the brief description of the terms in the present application is only for the convenience of understanding the subsequently described implementations, and is not intended to limit the implementations of the present application. Unless otherwise specified, these terms should be understood according to their ordinary and general meanings.

[0058] In addition, the terms "comprise" and "have" and any variations thereof are intended to cover but not exclusively include, for example, a product or device that comprises a series of components does not have to be limited to the components clearly listed, but can include other components that are not clearly listed or inherent to these products or devices.

[0059] In the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0060] The terms "first", "second", "third" and the like are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second", "third" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0061] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mount", "connect", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0062] At present, the refrigerator has become an essential household appliance in the user's home, and the user will use the refrigeration compartment of the refrigerator to refrigerate or freeze food, so as to preserve the food or prolong the storage time of the food.

[0063] Figure 1 and Figure 2 A structural schematic diagram of a refrigerator is provided for embodiments of the present application, as shown in Figure 1 and Figure 2 The refrigerator can include:

[0064] A cabinet 10, which can be configured with a refrigeration compartment 110. The refrigeration compartment 110 can have a taking and placing opening, via which a user can place articles into the refrigeration compartment 110 or take articles out of the refrigeration compartment 110. The refrigerator can further include a door body 20, which can be rotatably connected with the cabinet 10 to open or close the refrigeration compartment 110. The refrigerator can further include a refrigeration device, which can be disposed in the cabinet 10 to provide cold quantity to the refrigeration compartment 110.

[0065] In some embodiments, the cabinet 10 can include a cabinet inner liner 120 and a cabinet shell 130. The cabinet inner liner 120 can be configured with the refrigeration compartment 110. The cabinet shell 130 can be connected to the outside of the cabinet inner liner 120 to form the appearance of the refrigerator. The cabinet 10 can further include a cabinet thermal insulation layer, which can be disposed between the cabinet inner liner 120 and the cabinet shell 130. The cabinet thermal insulation layer can thermally insulate the refrigeration compartment 110 to minimize heat exchange between the refrigeration compartment 110 and the outside of the refrigerator, which is conducive to ensuring the refrigeration effect of the refrigerator.

[0066] As shown in Figure 1 The cabinet 10 can include a cabinet front wall 121 located at the front side. The taking and placing opening can be located at the front side of the cabinet 10, for example, the taking and placing opening can be formed on the cabinet front wall 121. Exemplarily, the cabinet front wall 121 can be a cabinet shell front wall located at the front side of the refrigerator among the cabinet shell 130. Alternatively, the cabinet front wall 121 can include a cabinet shell front wall located at the front side of the refrigerator among the cabinet shell 130, and a cabinet liner front wall located at the front side of the refrigerator among the cabinet inner liner 120, which can be in abutment with the cabinet shell front wall.

[0067] The cabinet 10 can further include a cabinet back wall 122 located at the back side of the refrigerator. The cabinet back wall 122 can be oppositely disposed with the cabinet front wall 121. Exemplarily, the cabinet back wall 122 can be a side wall located at the back side of the refrigerator among the cabinet inner liner 120.

[0068] The cabinet 10 can further include two cabinet side walls 123 respectively located at the left side and the right side of the refrigerator. The two cabinet side walls 123 can be oppositely disposed, and each of the cabinet side walls 123 can be connected with the cabinet front wall 121 and the cabinet back wall 122. Exemplarily, the two cabinet side walls 123 can be side walls respectively located at the left side and the right side of the refrigerator among the cabinet inner liner 120.

[0069] The cabinet 10 can further include a cabinet top wall 124 located at the top side of the refrigerator. The cabinet top wall 124 can be connected with the cabinet rear wall 122, the cabinet front wall 121 and the two cabinet side walls 123. Exemplarily, the cabinet top wall 124 can be a top wall of the cabinet liner 120.

[0070] The cabinet 10 can further include a cabinet bottom wall 125 located at the bottom side of the refrigerator. The cabinet bottom wall 125 can be located opposite to the cabinet top wall 124. The cabinet bottom wall 125 can be connected with the cabinet rear wall 122, the cabinet front wall 121 and the two cabinet side walls 123. Exemplarily, the cabinet bottom wall 125 can be a bottom wall of the cabinet liner 120.

[0071] The cabinet top wall 124, the cabinet rear wall 122, the cabinet bottom wall 125 and the two cabinet side walls 123 can enclose the refrigeration compartment 110.

[0072] The number of the refrigeration compartments 110 can be one or more. Exemplarily, as shown in FIG. 1, the number of the refrigeration compartments 110 can be two. One of the refrigeration compartments 110 can be located at the upper part of the cabinet 10. The other refrigeration compartment 110 can be located at the lower part of the cabinet 10. Exemplarily, the refrigeration compartment 110 located at the upper part of the cabinet 10 can be set as a refrigeration compartment. The two refrigeration compartments 110 located at the lower part of the cabinet 10 can be set as freezing compartments. Figure 1 It can be understood that the number of the refrigeration compartments 110 can also be one, or three, or more than three. The refrigeration compartments 110 can be set as refrigeration compartments or freezing compartments. In some possible implementation manners, the refrigeration compartments 110 can also be set as variable-temperature compartments with variable internal temperature, which will not be described herein again.

[0073] The door body 20 can be rotationally connected with the cabinet 10 to close or open the refrigeration compartment 110 corresponding thereto. Each refrigeration compartment 110 can be provided with one door body 20. Each refrigeration compartment 110 can also be provided with two door bodies 20 (as shown in FIG. 1) or more than two door bodies 20, which will not be described herein again.

[0074] Figure 1 The door body 20 can be rotationally connected with the cabinet 10 to close or open the refrigeration compartment 110 corresponding thereto. Each refrigeration compartment 110 can be provided with one door body 20. Each refrigeration compartment 110 can also be provided with two door bodies 20 (as shown in FIG. 1) or more than two door bodies 20, which will not be described herein again.

[0075] ​The refrigeration device can be arranged in the cabinet 10 to provide cold energy for the refrigeration compartment 110. Illustratively, the refrigeration device can include a compressor, a condenser, a capillary tube and an evaporator connected in a cycle. When the refrigeration device operates, the compressor compresses the refrigerant vapor to generate high-temperature and high-pressure refrigerant vapor and delivers the refrigerant vapor to the condenser. The condenser liquefies the high-temperature and high-pressure refrigerant vapor to generate high-temperature and low-pressure refrigerant liquid and delivers the refrigerant liquid to the capillary tube. The capillary tube depressurizes the refrigerant liquid to convert the high-pressure and low-temperature refrigerant liquid into low-pressure and low-temperature refrigerant liquid and delivers the refrigerant liquid to the evaporator. The evaporator receives the low-pressure and low-temperature refrigerant liquid and causes it to boil under isobaric conditions to absorb heat and vaporize to form refrigerant vapor to reduce the temperature in the refrigeration compartment 110.

[0076] With reference to Figure 1 and Figure 2 The refrigerator can further include a shelf assembly 30, which can include a shelf 310 that can be light-transmissive, illustratively a glass shelf or a transparent plastic shelf, etc. The shelf 310 is slidably arranged in the refrigeration compartment 110. The top of the shelf 310 has a placement surface for placing articles. The number of shelves arranged in one refrigeration compartment 110 can be one or more.

[0077] With reference to Figure 3 The door body 20 further has a temperature display assembly 40 arranged thereon, which is used to display the temperature in at least one refrigeration compartment 110 so that the user can know the temperature in the refrigeration compartment 110 without opening the door body 20. It can be understood that the refrigeration compartment 110 further has a temperature sensor 50 arranged therein to collect the temperature in the refrigeration compartment 110, so that the temperature display assembly 40 displays the temperature based on the temperature collected by the temperature sensor 50.

[0078] With reference to Figure 4 At present, the power module of the refrigerator is connected to the mains to provide power to various components of the refrigerator to enable the refrigerator to operate normally. For example, the power module supplies power to the control unit (MCU), the temperature display assembly, the temperature sensor, the compressor, etc. of the refrigerator based on the mains.

[0079] During normal operation of the refrigerator, the MCU can obtain the temperature in the refrigeration compartment of the refrigerator collected by the temperature sensor and control the temperature display assembly to display the obtained temperature in the refrigeration compartment of the refrigerator. For example, the MCU obtains the temperature of the refrigeration compartment of the refrigerator through the temperature sensor as 4°C and can control the temperature assembly to display the temperature of the refrigeration compartment as 4°C.

[0080] However, after the power failure, the refrigerator components have no power input, the MCU, temperature sensor and display components cannot operate, and the refrigerator cannot display the temperature in the refrigeration compartment. The user cannot know whether the temperature in the refrigeration compartment is still suitable for storing food without opening the refrigerator door body, but opening the door body will accelerate the temperature rise in the refrigeration compartment, making the food more likely to deteriorate. The user experience is poor.

[0081] Therefore, the embodiments of the present application provide a refrigerator. By setting a backup power supply interface in the refrigerator, after the power failure, the backup power supply is connected through the backup power supply interface to supply power to the MCU, temperature sensor and display components of the refrigerator. In the case of power failure, the refrigerator can normally display the temperature in the refrigeration compartment. Thus, the user can learn the temperature in the refrigeration compartment in time, and the user experience is improved.

[0082] The technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail below with specific embodiments. The following specific embodiments can be implemented independently or in combination. For the same or similar concepts or processes, some embodiments may not be described again.

[0083] Figure 5 A structural schematic diagram of a refrigerator provided by the embodiments of the present application is shown in Figure 5 As shown, the refrigerator comprises a temperature sensor, a display module, a controller, a power supply module, a first power supply interface, a second power supply interface and a power supply detection module.

[0084] The temperature sensor is arranged in the refrigeration compartment of the refrigerator to collect the temperature of the refrigeration compartment. The display module is arranged on the cabinet of the refrigerator to display the temperature of the refrigeration compartment to the user. The controller, power supply module, first power supply interface, second power supply interface and power supply detection module are all arranged inside the refrigerator cabinet.

[0085] In some embodiments, the power supply module is connected with the commercial power and the first power supply interface. The first power supply interface is connected with the power supply detection module. The power supply detection module is connected with the controller, temperature sensor and display module.

[0086] The power supply module is used to receive the electrical energy input by the commercial power and supply power to the temperature sensor, display module and controller through the first power supply interface and power supply detection module. That is, the commercial power, power supply module, first power supply interface and power supply detection module form a first power supply path for supplying power to the temperature sensor, display module and controller.

[0087] In some embodiments, the power supply detection module is further connected with an external backup power supply through the second power supply interface, and the power supply detection module can receive the power input by the external backup power supply to supply power to the temperature sensor, the display module and the controller. That is, the external backup power supply, the second power supply interface and the power supply detection module form a second power supply path to supply power to the temperature sensor, the display module and the controller.

[0088] In some embodiments, when the power supply detection module detects that the first power supply interface has power input (i.e., the mains is connected), the first power supply path is turned on to supply power to the temperature sensor, the display module and the controller by the power input by the first power supply interface, so that the controller acquires the temperature of the refrigerator refrigeration compartment collected by the temperature sensor and controls the display module to display the temperature of the refrigerator refrigeration compartment collected by the temperature sensor.

[0089] In some embodiments, when the power supply detection module detects that the first power supply interface has no power input and the second power supply interface has power input (i.e., the mains is powered off), the second power supply path is turned on to supply power to the temperature sensor, the display module and the controller by the power provided by the external backup power supply input by the second power supply interface, so that the controller, the temperature sensor and the display module can work normally in the case of mains power failure, so that the controller acquires the temperature of the refrigerator refrigeration compartment collected by the temperature sensor and controls the display module to display the temperature of the refrigerator refrigeration compartment collected by the temperature sensor.

[0090] The refrigerator provided by the embodiments of the present application can supply power through the mains and the first power supply path when the mains is normally powered, and supply power through the external power supply and the second power supply path when the mains is powered off. In the case of mains power failure, the controller, the temperature sensor and the display module can work normally, so that the controller can control the display module to display the temperature of the refrigerator refrigeration compartment collected by the temperature sensor. That is, in the case of power failure, the refrigerator can still display the temperature of the refrigeration compartment, effectively improving the user experience.

[0091] On the basis of the above-mentioned embodiments, the structure of the power supply detection module is introduced as follows.

[0092] Figure 6 The structure diagram of a power supply detection module provided by the embodiments of the present application is shown in FIG. 1. Figure 6 As shown in FIG. 1, the power supply detection module includes a first switching circuit and a second switching circuit.

[0093] The first switching circuit is connected with the first power supply interface, and the second switching circuit is connected with the first power supply interface and the second power supply interface.

[0094] In the case that the first power supply interface has the power input, the first switch circuit is turned on, the second switch circuit is turned off, and the power input by the first power supply interface flows to the rear end (for example, a controller, a display module, a temperature sensor, etc.) through the first switch circuit to supply power to the rear end.

[0095] In the case that the first power supply interface has no power input and the second power supply interface has the power input, the second switch circuit is turned on, and the power input by the second power supply interface flows to the rear end through the second switch circuit to supply power to the rear end.

[0096] With reference to Figure 7 , the first switch circuit comprises a first switch tube and a first switch unit, the first switch tube and the first switch unit are connected with the first power supply interface respectively, the first switch tube and the first switch unit are connected, and the first switch unit is grounded.

[0097] In the case that the first power supply interface has the power input, when the first switch unit receives the power input by the first power supply interface, the first switch unit provides a turn-on voltage to the first switch tube, the first switch tube is turned on when it receives the power input by the first power supply interface and the turn-on voltage provided by the first switch unit, and the power input by the first power supply interface flows to the rear end through the first switch tube to supply power to the rear end.

[0098] With reference to Figure 8 , the first switch unit comprises a second switch tube, a first resistor and a second resistor. The second switch tube is connected with the first switch tube, a third resistor and a fourth resistor respectively. The third resistor and the fourth resistor are connected in parallel with the first power supply interface, and the fourth resistor and the second switch tube are grounded.

[0099] In the case that the first power supply interface has the power input, when the second switch tube receives the power input by the first power supply interface, the second switch tube is turned on to provide a grounding voltage to the first switch tube, the first switch tube is turned on when it receives the power input by the first power supply interface and the grounding voltage provided by the second switch tube, and the power input by the first power supply interface flows to the rear end through the first switch tube to supply power to the rear end.

[0100] With reference to Figure 9 , the second switch circuit comprises a third switch tube and a third resistor, the third switch tube is connected with the first power supply interface, the second power supply interface and the first switch tube respectively, one end of the first resistor is connected with the first power supply interface, and the other end of the first resistor is grounded.

[0101] In the case that the first power supply interface has the power input, the third switch tube is turned off, and even if the second power supply interface has the power input, the second power supply interface will not supply power to the rear end, thereby preventing power supply conflict.

[0102] In the case that the first power supply interface does not have the input of electric energy and the second power supply interface has the input of electric energy, the third resistor provides a ground voltage to the third switch tube through the ground, and the third switch tube is turned on when receiving the electric energy input by the second power supply interface and the ground voltage provided by the third resistor, so that the electric energy input by the second power supply interface flows to the rear end through the third switch tube to supply power to the rear end.

[0103] Reference Figure 10 The power supply detection module further comprises a detection circuit; the detection circuit is connected with the third switch tube, the first switch tube and the controller.

[0104] The detection circuit is configured to output a first power supply signal to the controller in the case that the first power supply interface has the input of electric energy, or output a second power supply signal to the controller in the case that the first power supply interface does not have the input of electric energy and the second power supply interface has the input of electric energy.

[0105] Please continue to refer to Figure 10 The detection circuit comprises a fourth switch tube, a fourth resistor and a fifth resistor.

[0106] The fourth switch tube is connected with the fourth resistor, the fifth resistor and the controller respectively, the fifth resistor is connected with the third switch tube, the sixth resistor is connected with the first switch tube, and the fourth switch tube is further grounded.

[0107] The fourth switch tube is configured to be turned off to output the first power supply signal in the case that the first power supply interface has the input of electric energy, and be turned on to output the second power supply signal in the case that the first power supply interface does not have the input of electric energy and the second power supply interface has the input of electric energy.

[0108] Please continue to refer to Figure 10 The second switch circuit further comprises a fifth switch tube; the fifth switch tube is connected with the first power supply interface, the third switch tube, the first switch tube and the fourth resistor respectively.

[0109] The fifth switch tube is configured to be turned off to prevent the electric energy input by the first power supply interface from flowing back to the fourth switch tube in the case that the first power supply interface has the input of electric energy.

[0110] In some embodiments, the first switch tube, the third switch tube and the fifth switch tube in the above embodiments are MOS tubes with parasitic diodes, and the second switch tube and the fourth switch tube are triodes.

[0111] The following will describe the structure of the power supply detection module provided by the embodiments of the present application with a specific example.

[0112] Reference Figure 11 Vin is a first power supply interface, VBAT is a second power supply interface, and +5V is a power supply output terminal for supplying power to a controller and the like.

[0113] The first switch circuit of the power supply detection module includes a switch tube Q1, a switch tube N1, a resistor R1, and a resistor R2. Vin is connected to the drain of the switch tube Q1, the source of the switch tube Q1 is connected to +5V, the gate of the switch tube Q1 is connected to the switch tube N1, the resistor R1 and the resistor R2 are respectively connected to Vin, the resistor R2 and the switch tube N1 are grounded.

[0114] In the case of inputting electric energy to Vin, Vin is high, Vin makes the source of the switch tube Q1 pulled up to high through the parasitic diode of the switch tube Q1, at the same time, Vin makes the switch tube N1 conduct, and the gate of the switch tube Q1 is pulled down to low, at this time, the voltage between the gate and the source of the switch tube Q1 is less than 0 and reaches the conduction threshold level, the switch tube Q1 is turned on, and the parasitic diode in the switch tube Q1 is turned off. Vin outputs +5V voltage through the switch tube Q1 to supply power to the back end.

[0115] The second switch circuit of the power supply detection module includes a switch tube Q2, a switch tube Q3, and a resistor R3. The gates of the switch tube Q2 and the switch tube Q3 are respectively connected to Vin, the drains of the switch tube Q2 and the switch tube Q3 are connected in series, the source of the switch tube Q2 is connected to VBAT, the source of the switch tube Q3 is connected to +5V, the resistor R3 is also connected to the gates of the switch tube Q2 and the switch tube Q3, and the resistor R3 is also grounded.

[0116] In the case of inputting electric energy to Vin, Vin is high, the source and the gate of the switch tube Q3 are both high, and the switch tube Q3 is turned off. The source of the switch tube Q2 is low, the gate is high, the voltage between the gate and the source is greater than 0, and the switch tube Q2 is turned off.

[0117] In the case of not inputting electric energy to Vin and inputting electric energy to VBAT, the gates of the switch tube Q2 and the switch tube Q3 are both pulled down to low, the source of the switch tube Q2 is high, the voltage between the gate and the source of the switch tube Q2 is less than 0 and reaches the conduction threshold level, the switch tube Q2 is turned on, and the electric energy flows to the switch tube Q3. At this time, the electric energy flowing to the switch tube Q3 makes the source of the switch tube Q3 pulled up to high through the parasitic diode of the switch tube Q3, the voltage between the gate and the source of the switch tube Q3 is less than 0 and reaches the conduction threshold level, the switch tube Q3 is turned on, and the parasitic diode in the switch tube Q3 is turned off. The electric energy is supplied to the back end through the switch tube Q3.

[0118] The detection circuit of the power supply detection module comprises a resistor R4, a resistor R5 and a switch tube N2. The resistor R4 is connected with the midpoint of the series connection of the switch tube Q2 and the switch tube Q3, and is connected with the switch tube N2. The switch tube N2 is connected with the resistor R5 and the controller respectively, and is grounded. The resistor R5 is also connected with +5V.

[0119] In the case of inputting electric energy at Vin, the switch tube Q2 and the switch tube Q3 are both off, the resistor R4 has no input, the switch tube N2 is in the off state, the resistor R5 inputs a high level, and the power end connected with the resistor R5 is pulled high to a high level. That is, a high level signal is output to the connected controller.

[0120] In the case of inputting electric energy at VBAT, the switch tube Q2 is on, a high level is input to the resistor R4, the switch tube N2 is on, and the power end connected with the resistor R5 is pulled low to a low level by the switch tube N2 grounded, that is, a low level signal is output to the connected controller.

[0121] In some embodiments, the power supply detection module not only supplies power to the controller, but also outputs a high level signal (first power supply signal) or a low level signal (second power supply signal) to the controller to indicate the current power supply condition.

[0122] When the controller receives the high level power supply signal, the controller can determine that it is currently powered by mains, and the controller can perform all control functions, such as controlling temperature display, controlling temperature adjustment, etc.

[0123] When the controller receives the low level power supply signal, the controller can determine that it is currently powered by an external backup power supply, and the controller can enter a power-off display mode. Since the capacity of the external backup power supply is small, in the power-off display mode, the controller only performs temperature display of the refrigeration compartment to ensure that the temperature display of the refrigeration compartment can be realized for a long time in the case of power failure.

[0124] In some embodiments, the refrigerator further comprises a door body rotatably connected with the cabinet to open or close the refrigeration compartment; the display module and the second power supply interface are arranged on the door body shell. By arranging the display module on the door body, the user can conveniently observe the temperature of the refrigeration compartment, and by arranging the second power supply interface on the door body, the user can conveniently use the power bank, storage battery and other backup power supplies to temporarily supply power to the controller, display module and temperature sensor in the case of power failure, so that the controller can realize temperature display of the refrigeration compartment in the case of power failure.

[0125] In some embodiments, as Figure 12As shown, the display module 40 includes a first display unit 401 and a second display unit 402, the first display unit 401 is used to display the identification of the refrigeration compartment, and the second display unit 402 is used to display the temperature of the refrigeration compartment.

[0126] For example, the refrigeration compartment includes a refrigeration compartment and a freezing compartment, and when the temperature display is performed, the refrigeration compartment and the freezing compartment simultaneously display the temperature and the identification of only one compartment. For example, when the refrigeration display is performed, the refrigeration indication mark in the first display unit 401 is lit, the controller obtains the temperature of the refrigeration compartment collected by the temperature sensor, and displays the temperature through the second display unit 402. When the freezing display is performed, the freezing indication mark in the first display unit 401 is lit, and the controller obtains the temperature of the refrigeration compartment collected by the temperature sensor and displays the temperature through the second display unit 402.

[0127] Please continue to refer to Figure 12 The display module 40 further includes a switching control 403, which is used to send a switching signal to the controller in response to the user's trigger; and the controller is further used to control the display module to switch to display the temperature of the next refrigeration compartment when the switching signal sent by the switching control is received. For example, the temperature of the refrigeration compartment is currently displayed, and the user can trigger the switching control 403. The switching control 403 sends a switching signal to the controller when the user's trigger is received. The controller obtains the temperature of the refrigeration compartment collected by the temperature sensor and controls the display module to switch from displaying the temperature of the refrigeration compartment to displaying the temperature of the freezing compartment when the switching signal sent by the switching control is received, that is, controls the refrigeration indication mark in the first display unit 401 to be extinguished, the freezing indication mark to be lit, and controls the second display unit 402 to display the temperature of the freezing compartment.

[0128] It should be understood that if the refrigerator includes a plurality of refrigeration compartments, the controller can switch the temperature display of the refrigeration compartments according to a preset switching sequence when the switching signal is received.

[0129] Please continue to refer to Figure 12 The second power supply interface 50 can be provided on the door body of the refrigerator to facilitate the user to access the backup power supply. For example, the second power supply interface 50 is provided below the display module 40 on the door body. It should be understood that the second power supply interface 50 can be provided at other positions of the refrigerator, for example, on the side wall of the refrigerator, and the present application does not limit the setting position of the second power supply interface 50.

[0130] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

[0131] The foregoing description has been presented for the purpose of illustration and description. It is not intended to be exhaustive or to limit the embodiments to the precise forms disclosed. Modifications and variations are possible in light of the above teachings or can be acquired from practice of the embodiments. The described embodiments were chosen and described in order to explain the principles of the embodiments and its practical application and to enable others skilled in the art to best use the embodiments and various embodiments with various modifications as are suited to the particular use contemplated.

Claims

1. A refrigerator characterized by comprising: The refrigerator comprises: a cabinet configured with at least one refrigeration compartment; a temperature sensor arranged in the refrigeration compartment; a display module arranged on the cabinet; a controller connected with the temperature sensor and the display module, configured to acquire the temperature of the refrigeration compartment collected by the temperature sensor, and control the display module to display the temperature of the refrigeration compartment; a power module connected with commercial power, configured to supply power to the refrigerator through the commercial power; a first power supply interface connected with the power module; a second power supply interface configured to be connected with an external backup power supply; a power supply detection module connected with the first power supply interface, the second power supply interface, the controller, the display module and the temperature sensor respectively; the power supply detection module, the first power supply interface and the power module form a first power supply path for supplying power to the controller, the display module and the temperature sensor; the power supply detection module and the second power supply interface form a second power supply path for supplying power to the controller, the display module and the temperature sensor, so that the controller controls the display module to display the temperature of the refrigeration compartment collected by the temperature sensor in the case that the first power supply path is conducted or in the case that the second power supply path is conducted; the power supply detection module is configured to conduct the first power supply path in the case that the commercial power is connected, or conduct the second power supply path in the case that the commercial power is not connected and the external backup power supply is connected.

2. The refrigerator according to claim 1, characterized in that, The power supply detection module comprises: a first switch circuit connected with the first power supply interface, configured to be conducted in the case that there is power input in the first power supply interface, so as to conduct the first power supply path; a second switch circuit connected with the first power supply interface and the second power supply interface, configured to be conducted in the case that there is no power input in the first power supply interface and there is power input in the second power supply interface, so as to conduct the second power supply path.

3. The refrigerator according to claim 2, characterized in that, The first switch circuit comprises a first switch tube and a first switch unit; the first power supply interface is connected with the first switch tube and the first switch unit respectively, the first switch tube is connected with the first switch unit, and the first switch unit is grounded; in the case that there is power input in the first power supply interface, the first switch unit is configured to provide a conduction voltage to the first switch tube, so as to make the first switch tube conductive.

4. The refrigerator according to claim 3, characterized in that, The first switch unit comprises a second switch tube, a first resistor and a second resistor; the second switch tube is connected with the first power supply interface through the first resistor, the second resistor is connected with the first power supply interface, and the second switch tube and the second resistor are grounded respectively.

5. The refrigerator according to claim 4, characterized in that, The second switch circuit comprises a third switch tube and a third resistor; the third switch tube is connected with the first power supply interface, the second power supply interface and the first switch tube respectively; one end of the first resistor is connected with the first power supply interface, and the other end of the first resistor is grounded.

6. The refrigerator according to claim 5, characterized in that, The power supply detection module further comprises a detection circuit. The detection circuit is connected with the third switch tube, the first switch tube and the controller, and is configured to output a first power supply signal to the controller when the first power supply interface has power input, or output a second power supply signal to the controller when the first power supply interface has no power input and the second power supply interface has power input.

7. The refrigerator according to claim 6, characterized in that The detection circuit comprises a fourth switch tube, a fourth resistor and a fifth resistor. The fourth switch tube is connected with the fourth resistor, the fifth resistor and the controller respectively, the fifth resistor is connected with the third switch tube, the fifth resistor is connected with the first switch tube, and the fourth switch tube is further grounded. The fourth switch tube is configured to be turned off to output the first power supply signal when the first power supply interface has power input, and is configured to be turned on to output the second power supply signal when the first power supply interface has no power input and the second power supply interface has power input.

8. The refrigerator according to claim 7, characterized in that, The second switch circuit further comprises a fifth switch tube. The fifth switch tube is connected with the first power supply interface, the third switch tube, the first switch tube and the fourth resistor respectively. The fifth switch tube is configured to be turned off to prevent the power input by the first power supply interface from flowing back to the fourth switch tube when the first power supply interface has power input.

9. The refrigerator according to claim 8, wherein The controller is configured to only perform temperature display of the refrigeration compartment when the second power supply signal is received.

10. The refrigerator according to any one of claims 1 to 9, characterized in that, The refrigerator comprises at least two refrigeration compartments, and the display module further comprises a switching control; The switching control is configured to send a switching signal to the controller in response to a user trigger; The controller is further configured to control the display module to switch to display the temperature of a next refrigeration compartment when the switching signal sent by the switching control is received.

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