Refrigerator standby electric power system capable of being automatically switched and use method of refrigerator standby electric power system

Abstract

The invention provides a refrigerator standby power system capable of being automatically switched and a use method thereof, belongs to the technical field of refrigerators, and solves the technical problems that an existing standby power system may frequently start and stop electric appliances and the like. The refrigerator standby power system capable of automatically switching comprises a main power supply, a standby power supply, a switching circuit and a refrigerator, and the main power supply and the standby power supply are electrically connected to the switching circuit; the switching circuit is electrically connected to the refrigerator and used for detecting whether the main power source breaks down or not and switching the main power source or the standby power source to supply power to the refrigerator. The switching circuit comprises a control module, the control module is electrically connected with a temperature module, the temperature module is arranged in the refrigerator and used for detecting the temperature in the refrigerator and transmitting the temperature to the switching circuit, and the switching circuit determines the time for starting the standby power supply when the main power supply breaks down according to the temperature information. The control method has the advantages that the standby power supply and the refrigerator are prevented from being frequently started and stopped, and the standby power supply and the refrigerator are protected.

Description

Technical Field

[0001] The invention belongs to the technical field of refrigerators and relates to a power system, in particular to an automatically switchable refrigerator backup power system and a use method thereof. Background Art

[0002] The safety and stability of the power system are increasingly being paid attention to by people. Various electrical equipment cannot do without a reliable power supply. Refrigerators are one of the common household appliances in our daily lives. Food and medicine that need to be frozen and protected are placed in refrigerators. If the refrigerator suddenly loses power during operation, the food and medicine will be damaged. In order to avoid the situation where the equipment stops working due to sudden power outages, existing refrigerators do not have a backup power supply system.

[0003] After searching, a backup power supply is disclosed in Chinese patent documents [Application number: 201710773796.8; Publication number: CN 109428386 A]. This backup power supply is used to replace the main power supply system to supply power to the load device when the main power supply system fails. The backup power supply system includes a main charge and discharge unit, which is electrically connected to the load device; a backup power supply unit, which is electrically connected to the main charge and discharge unit, and is used to supply power to the load device through the main charge and discharge unit when the main power supply system fails; an auxiliary charge and discharge unit, which is electrically connected between the auxiliary power supply unit and the backup power supply unit; and a control unit, which is electrically connected to the backup power supply unit, the auxiliary power supply unit and the auxiliary charge and discharge unit, and is used to detect whether the backup power supply has no charge and discharge within a preset time, and when it is detected that the backup power supply unit has no charge and discharge within a preset time, the backup power supply unit is controlled to charge the auxiliary power supply unit through the auxiliary charge and discharge unit. The backup power supply system provided by the present invention realizes the activation of the battery cell in the backup power supply unit, thereby improving the service life of the backup power supply unit.

[0004] Although the backup power supply system disclosed in the patent can still provide the rated power when an emergency situation occurs and emergency power supply is required, when the system is working, when it detects that the main power supply is cut off, it will immediately switch the circuit to make the backup power supply system start working. In life, we find that in most cases, there are two situations when the refrigerator power outages. One situation is a power outage in the area, which will last for a long time, and the other situation is a tripping phenomenon caused by circuit overload. At this time, people usually re-supply in a very short time, and frequent tripping may also occur. At this time, if the above-mentioned existing backup power supply system is used, the backup power supply and the refrigerator will be frequently started and stopped, causing considerable damage to the backup power supply and the refrigerator. Summary of the invention

[0005] The purpose of the present invention is to address the above-mentioned problems in the prior art and to propose an automatically switchable refrigerator backup power system. The technical problem to be solved by the invention is: how to prevent the backup power supply and the refrigerator from being frequently started and stopped, and to protect the backup power supply and the refrigerator.

[0006] The purpose of the present invention can be achieved by the following technical solutions:

[0007] An automatically switchable refrigerator backup power system comprises a main power supply, a backup power supply, a switching circuit and a refrigerator, wherein the main power supply and the backup power supply are electrically connected to the switching circuit;

[0008] A switching circuit, electrically connected to the refrigerator, for detecting whether a main power supply fails and switching the main power supply or the backup power supply to supply power to the refrigerator;

[0009] The switching circuit includes a control module, which is electrically connected to a temperature module. The temperature module is arranged in the refrigerator. When the main power fails, the temperature in the refrigerator is detected and transmitted to the switching circuit. The switching circuit decides when to start the backup power supply when the main power fails based on the temperature information.

[0010] The control module is also electrically connected to a detection module and a switching module. The detection module is used to detect whether a main power supply fails. The switching module is used to switch the backup power supply to supply power to the refrigerator when the main power supply fails.

[0011] With the above structure, when working, the detection module of the switching circuit detects the main power supply of the refrigerator in real time. When it is detected that the main power supply fails, the control module turns on the temperature module. The temperature module detects the temperature in the refrigerator in real time after the main power supply fails. When it is detected that the temperature in the refrigerator rises to a preset value, the control module enables the backup power supply to supply power to the refrigerator through the charging and discharging module. In this way, the backup power supply will not be started immediately after the main power supply fails. At this time, the temperature of the refrigerator will gradually rise as there is no power supply. The backup power supply will be enabled after reaching the corresponding temperature, thereby preventing the backup power supply and the refrigerator from being frequently started and stopped to a great extent, thereby protecting the backup power supply and the refrigerator.

[0012] The backup power supply includes a backup battery and a protection circuit. The backup power supply is electrically connected to a charging and discharging module, which is electrically connected to the switching circuit. When the backup power supply needs to be charged, the external power supply charges the backup power supply through the charging and discharging module. When the main power supply fails, the backup power supply supplies power to the refrigerator through the charging and discharging module.

[0013] The backup power supply is electrically connected to a power detection module for detecting the remaining power of the backup power supply. When it is detected that the remaining power of the backup power supply reaches a detection value, the charge and discharge module is controlled to charge the backup power supply.

[0014] The control module is also electrically connected to a timing module and a communication module. The communication module is connected to the user's mobile terminal. When the backup power supply is supplied, the timing module times the duration of use of the backup power supply, and calculates the duration of use of the backup power supply in conjunction with the remaining power detected by the power detection module, and sends it to the mobile terminal.

[0015] With the above structure, when the backup power supply is supplied, the power detection module detects the remaining power of the backup power supply, and the timing module is used to detect the usage time of the backup power supply. When the remaining power reaches the alarm preset value, the time that the remaining power can be used is calculated based on the used power and the usage time, and the communication module is sent to the user's smart terminal for reminder, so that the user can consider the use of the refrigerator according to the remaining power supply time and the time to restore the main power supply that he knows. If it is found that the main power supply cannot be used when the backup power supply is used up, the user can think of other methods in advance, thereby improving the practicality of the device.

[0016] The protection circuit adopts an overload protection circuit or an overheat protection circuit.

[0017] The backup battery includes a box body, a box cover is provided at the upper end of the box body, a partition is fixed inside the box body, the partition divides the box body into a plurality of installation cavities, the battery body is arranged in the installation cavity, a cooling cavity is opened in the side wall of the box body, an air outlet duct and an air exhaust duct are fixed inside the cooling cavity, the air outlet duct and the air exhaust duct are connected through a fan, the air outlet duct is connected with the interior of the box body through a plurality of first branch pipes, the air exhaust duct is connected with the interior of the box body through a second branch pipe, a refrigerant and a refrigeration component are arranged inside the cooling cavity, a liquid storage cavity is opened inside the partition, the liquid storage cavity is connected with the cooling cavity, a plurality of ventilation ducts are passed through the partition, the ventilation ducts are made of heat-conducting material, and heat-conducting plates are fixed to the outer periphery of both ends of the ventilation ducts.

[0018] With the above structure, during operation, the inside of the box is cooled by circulating air through the cooperation of the fan, the air outlet duct and the exhaust duct. At the same time, through the arrangement of the ventilation duct, not only can the heat dissipation of multiple batteries be uniform during air cooling, but the temperature emitted by the battery can be cooled by the coolant using the ventilation duct and the heat conduction plate. Therefore, when the cold air blown out of the air outlet duct passes through the ventilation duct, the ventilation duct can be used to cool it down, preventing the cold air from heating up due to passing through the battery close to the air outlet duct, resulting in poor heat dissipation effect of the battery close to the exhaust duct, thereby greatly improving the heat dissipation effect.

[0019] The cam is provided with a plurality of camshafts, each of which is provided with a plurality of camshafts, each of which is provided with a plurality of camshafts, each of which is provided with a plurality of camshafts, each of which is provided with a plurality of camshafts.

[0020] With the above structure, during operation, when the battery temperature exceeds the safe value due to a malfunction or even the battery body expands and is about to explode, the air pressure inside the box increases, and the gas pressure will be used to push the drive plate down through the vent, and the drive plate drives the piston plate to descend through the connecting rod. The piston plate descends, allowing the coolant under the piston plate to enter the cooling chamber and the liquid storage chamber above the piston plate through the connecting pipe, so that the pressure in the liquid storage chamber increases, thereby causing the coolant to push the blocking block. When the pressure increases to a certain level, the push plate will push the blocking plate and overcome the tension of the first tension spring, so that the sealing port is opened, and the coolant is sprayed out through the sealing port, which can not only reduce the temperature of the battery, but also realize fire extinguishing operations, greatly reducing the probability of battery explosion and improving the safety of equipment use.

[0021] The left and right sides of the lower end of the box body are provided with mounting grooves, a first terminal is fixed in the mounting groove, the first terminal is electrically connected to the battery body, a mounting box is detachably connected to the mounting groove, a first slide groove is provided at the right end inside the mounting box, a first slide seat is slidably connected in the first slide groove, a winding column is rotatably connected on the first slide seat, a spiral winding groove is provided on the winding column, a through groove is provided at the right end of the mounting box, a second slide seat is slidably connected in the through groove, an extension groove is provided at the upper and lower ends of the through groove, an extension plate is fixed on the upper and lower sides of the second slide seat, the extension plate extends into the extension groove, a third spring is fixed between the extension plate and the extension groove, a drive shaft is rotatably connected to the second slide seat, and the drive shaft is fixed to the winding column A fixed connection is provided, an annular seat is fixed on the winding column, an annular sliding cavity is provided inside the annular seat, an annular conductive ring is fixed inside the annular sliding cavity, a second terminal is fixed on the outer side of the annular seat, the second terminal is electrically connected to the annular conductive ring, an annular opening is provided on the outer periphery of the annular cavity, a third terminal is slidably connected to the annular opening, the third terminal extends into the annular cavity and is fixed with a conductive sheet, an annular sliding groove is provided on the outer periphery of the annular sliding cavity, a sliding cover is slidably connected in the annular sliding groove, a first spring is fixed in the sliding cover, the other end of the first spring is fixedly connected to the conductive sheet, a second sliding groove is provided on the inner bottom side of the installation box, a slider is slidably connected in the second sliding groove, and the slider is fixedly connected to the third terminal;

[0022] The driving column is provided with a first sliding cavity inside the first sliding cavity, and a second tension spring is fixed inside the first sliding cavity, and a limit plate is fixed on the other end of the second tension spring, and a pull rod is fixed on the other side of the limit plate, and the other end of the pull rod extends out of the driving column and drives the driving disk, and the pull rod and the limit plate are both square structures. A plurality of positioning holes are provided on the left side of the second sliding seat, and a plurality of positioning rods matching the positioning holes are provided on the driving disk. A second sliding cavity is provided inside the limit plate and is slidably connected with two first trapezoidal seats inside the second sliding cavity, and a second spring is fixed between the first trapezoidal seat and the second sliding cavity, and a support rod is slidably connected inside the pull rod, and the left end of the support rod extends out of the driving disk, and a first opening for the support rod to extend into the second sliding cavity is provided on the left side of the limit plate, and the support rod cooperates with the inclined surface of the first trapezoidal seat, and a supporting column is fixed on the first trapezoidal seat, and a limiting block is fixed on the other end of the supporting column, and second openings for the limiting block to extend out are provided at the upper and lower ends of the second sliding cavity, and the limiting block cooperates with the limiting groove;

[0023] The left and right ends of the winding column are rotatably connected with a circular ring, a push rod is fixed to the lower end of the outer side of the circular ring, a threading hole is opened at the lower end of the installation box, a sealing ring is fixed to the inner wall of the threading hole, an arc plate is arranged between the outer periphery of the sealing ring and the threading barrel, a guide rod is fixed on the arc plate, the guide rod is slidably connected to the side wall of the installation box, a driving groove is opened in the installation box, the other end of the guide rod extends into the driving groove and is fixed with a second trapezoidal seat, the lower end of the push rod extends into the driving cavity and contacts with the inclined surface of the second trapezoidal seat.

[0024] With the above structure, when in use, the power cord is connected to the second terminal and wound in the spiral winding groove, and the first terminal and the third terminal are connected by a wire, and the installation box is installed in the installation groove. The arrangement of this structure can not only use the spiral winding groove to store the redundant power cord, but also when the power cord is pulled by external force, the positioning rod is inserted into the positioning hole, so that the winding post will not rotate, and the power cord will drive the winding post to move, so that the push rod pushes the second trapezoidal seat, and the second trapezoidal seat uses the guide rod to make the arc plate squeeze the power cord in the threading hole. Therefore, the greater the pulling on the power cord, the greater the clamping force of the wiring hole on the power cord, so that the power cord will not be pulled due to external force. The wire-releasing operation can be realized by rotating the driving disk. After the wire-releasing operation is completed, the supporting rod is pulled outward, and the limiting block is separated from the limiting groove under the action of the second spring, and then the positioning rod is reinserted into the positioning hole under the action of the second tension spring. The present invention not only ensures the stability of the power cord connection, but also realizes the retraction and release of the wires, and the operation is simple and convenient.

[0025] A method for using an automatically switchable refrigerator backup power system, the steps are as follows:

[0026] S1, the detection module of the switching circuit detects the main power supply of the refrigerator in real time. When a failure of the main power supply is detected, the control module turns on the temperature module;

[0027] S2, the temperature module detects the temperature in the refrigerator in real time after the main power fails. When it is detected that the temperature in the refrigerator rises to a preset value, the control module uses the charge and discharge module to enable the backup power supply to supply power to the refrigerator;

[0028] S3, when the backup power supply is supplied, the power detection module detects the remaining power of the backup power supply, and the timing module detects the usage time of the backup power supply;

[0029] S4. When the remaining power reaches the preset alarm value, the remaining power usage time is calculated based on the power used and the usage time, and sent to the user's smart terminal through the communication module for reminder;

[0030] S5. When the main power supply returns to normal, the control module stops the backup power supply by switching the circuit, and then re-supplies power through the main power supply. The circuit detection module is then used to detect the remaining power of the backup power supply. When the remaining power of the backup power supply reaches the preset charging value, the charge and discharge module is used to charge the backup power supply.

[0031] Compared with the prior art, the automatic switching refrigerator backup power system has the following advantages:

[0032] 1. During operation, the detection module of the switching circuit detects the main power supply of the refrigerator in real time. When it is detected that the main power supply fails, the control module turns on the temperature module. The temperature module detects the temperature in the refrigerator in real time after the main power supply fails. When it is detected that the temperature in the refrigerator rises to a preset value, the control module enables the backup power supply to supply power to the refrigerator through the charge and discharge module. In this way, the backup power supply will not be started immediately after the main power supply fails. At this time, the temperature of the refrigerator will gradually rise as there is no power supply. The backup power supply will be enabled after reaching the corresponding temperature, thereby preventing the backup power supply and the refrigerator from being frequently started and stopped to a great extent, thereby protecting the backup power supply and the refrigerator.

[0033] 2. The setting of the timing module and the power detection module. When the backup power supply is supplied, the power detection module detects the remaining power of the backup power supply. At the same time, the timing module is used to detect the usage time of the backup power supply. When the remaining power reaches the alarm preset value, the time that the remaining power can be used is calculated according to the used power and the usage time, and sent to the user's smart terminal through the communication module for reminder, so that the user can consider the use of the refrigerator according to the remaining power supply time and the time to restore the main power supply that he knows. If it is found that the main power supply cannot be used when the backup power supply is used up, the user can think of other methods in advance, thereby improving the practicality of the device.

[0034] 3. The fan, ventilation duct and other structures are arranged. Through the cooperation of the fan, the air outlet duct and the exhaust duct, the inside of the box is circulated with air to cool. At the same time, through the arrangement of the ventilation duct, not only can the heat dissipation of multiple batteries be uniform during air cooling, but the temperature emitted by the battery can be cooled by the coolant using the ventilation duct and the heat conduction plate. Therefore, when the cold air blown out of the air outlet duct passes through the ventilation duct, the ventilation duct can be used to cool it down, preventing the cold air from heating up due to passing through the battery close to the air outlet duct, resulting in poor heat dissipation effect of the battery close to the exhaust duct, thereby greatly improving the heat dissipation effect.

[0035] 4. The arrangement of structures such as the piston plate and the blocking plate. When the battery temperature exceeds the safety value due to a malfunction or even the battery body expands and is about to explode, the air pressure inside the box increases, and the gas pressure will be used to push the drive plate down through the vent. The drive plate drives the piston plate to descend through the connecting rod. The piston plate descends, allowing the coolant under the piston plate to enter the cooling chamber and the liquid storage chamber above the piston plate through the connecting pipe, thereby increasing the pressure in the liquid storage chamber, thereby causing the coolant to push the blocking block. When the pressure increases to a certain extent, the push plate will push the blocking plate and overcome the tension of the first tension spring, so that the sealing port is opened, and the coolant is sprayed out through the sealing port, which can not only reduce the temperature of the battery, but also realize fire extinguishing operations, greatly reducing the probability of battery explosion and improving the safety of equipment use.

[0036] 5. The arrangement of structures such as a winding post, etc., connects the power cord to the second terminal and winds it in the spiral winding groove, and at the same time connects the first terminal and the third terminal through a wire, and the installation box is installed in the installation groove. The arrangement of this structure can not only use the spiral winding groove to store excess power cords, but also when the power cord is pulled by external force, the positioning rod is inserted into the positioning hole, so that the winding post will not rotate, and the power cord will drive the winding post to move, so that the push rod pushes the second trapezoidal seat, and the second trapezoidal seat uses the guide rod to make the arc plate squeeze the power cord in the threading hole. Therefore, the greater the pulling on the power cord, the greater the clamping force of the wiring hole on the power cord, so that the power cord will not be pulled by external force. The wire-releasing operation can be realized by rotating the driving disk. After the wire-releasing operation is completed, the supporting rod is pulled outward, and the limiting block is separated from the limiting groove under the action of the second spring, and then the positioning rod is reinserted into the positioning hole under the action of the second tension spring. The present invention not only ensures the stability of the power cord connection, but also realizes the retraction and release of the wires, and the operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a system block diagram of the present invention.

[0038] Figure 2 It is a system block diagram of the switching circuit in the present invention.

[0039] Figure 3 It is a system block diagram of the backup power supply in the present invention.

[0040] Figure 4 It is a structural schematic diagram of the backup battery in the present invention.

[0041] Figure 5 It is a front view of the backup battery in the present invention.

[0042] Figure 6 It is a structural schematic diagram of the partition in the present invention.

[0043] Figure 7 yes Figure 6 A partial enlarged view of point A in the middle.

[0044] Figure 8 It is a partial enlarged view of point B in convex 7.

[0045] Fig. 9 It is a schematic diagram of the internal structure of the installation box in the present invention.

[0046] Fig.10 It is a schematic diagram of the installation structure of the drive shaft in the present invention.

[0047] Fig.11 yes Fig.10 A partial enlarged view of point D in the middle.

[0048] Fig.12 yes Fig. 9 A partial enlarged view of point C in the middle.

[0049] In the figure, 1, box body; 2, box cover; 3, mounting groove; 4, first terminal; 5, cooling chamber; 6, air outlet pipe; 7, first branch pipe; 8, fan; 9, exhaust pipe; 10, second branch pipe; 11, liquid storage chamber; 12, barrier cover; 13, vent; 14, drive plate; 15, connecting rod; 16, piston plate; 17, connecting pipe; 18, mounting box; 19, ventilation pipe; 20, heat conduction plate; 21, fire extinguishing port; 22, blocking plate; 23, first tension spring; 24, slide plate; 25, blocking groove; 26, push plate; 27, blocking plate; 28, first slide groove; 29, first slide seat; 30, winding column; 31, ring; 32, push rod; 33, threading hole; 34, sealing ring; 35, arc plate; 36 , guide rod; 37, driving groove; 38, second trapezoidal seat; 39, sliding cover; 40, through groove; 41, second sliding seat; 42, extension plate; 43, extension groove; 44, third spring; 45, driving shaft; 46, first sliding cavity; 47, second tension spring; 48, limiting plate; 49, pulling rod; 50, supporting rod; 51, driving disk; 52, positioning rod; 53, positioning hole; 54, limiting groove; 55, second spring; 56, first trapezoidal seat; 57, supporting column; 58, limiting block; 59, first opening; 60, annular seat; 61, second terminal; 62, annular sliding cavity; 63, annular conductive ring; 64, conductive sheet; 65, first spring; 66, third terminal; 67, second sliding groove; 68, sliding block. DETAILED DESCRIPTION

[0050] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0051] like Figure 1-Figure 3 As shown, the automatic switchable refrigerator backup power system comprises a main power supply, a backup power supply, a switching circuit and a refrigerator, wherein the main power supply and the backup power supply are electrically connected to the switching circuit;

[0052] A switching circuit, electrically connected to the refrigerator, for detecting whether a main power supply fails and switching the main power supply or the backup power supply to supply power to the refrigerator;

[0053] The switching circuit includes a control module, which is electrically connected to a temperature module. The temperature module is arranged in the refrigerator. When the main power fails, the temperature in the refrigerator is detected and transmitted to the switching circuit. The switching circuit decides when to start the backup power supply when the main power fails based on the temperature information.

[0054] The control module is also electrically connected to a detection module and a switching module. The detection module is used to detect whether the main power supply fails. The switching module is used to switch the backup power supply to power the refrigerator when the main power supply fails.

[0055] With the above structure, when working, the detection module of the switching circuit detects the main power supply of the refrigerator in real time. When it is detected that the main power supply fails, the control module turns on the temperature module. The temperature module detects the temperature in the refrigerator in real time after the main power supply fails. When it is detected that the temperature in the refrigerator rises to a preset value, the control module enables the backup power supply to supply power to the refrigerator through the charging and discharging module. In this way, the backup power supply will not be started immediately after the main power supply fails. At this time, the temperature of the refrigerator will gradually rise as there is no power supply. The backup power supply will be enabled after reaching the corresponding temperature, thereby preventing the backup power supply and the refrigerator from being frequently started and stopped to a great extent, thereby protecting the backup power supply and the refrigerator.

[0056] The backup power supply includes a backup battery and a protection circuit. The backup power supply is electrically connected to a charge and discharge module, which is electrically connected to the switching circuit. When the backup power supply needs to charge the battery, the external power supply charges the backup power supply through the charge and discharge module. When the main power supply fails, the backup power supply supplies power to the refrigerator through the charge and discharge module.

[0057] The backup power supply is electrically connected to a power detection module for detecting the remaining power of the backup power supply. When it is detected that the remaining power of the backup power supply reaches a detection value, the charge and discharge module is controlled to charge the backup power supply.

[0058] The control module is also electrically connected to a timing module and a communication module. The communication module is connected to the user's mobile terminal. When the backup power supply is supplied, the timing module times the duration of use of the backup power supply, and calculates the duration of use of the backup power supply in conjunction with the remaining power detected by the power detection module and sends it to the mobile terminal.

[0059] With the above structure, when the backup power supply is supplied, the power detection module detects the remaining power of the backup power supply, and the timing module is used to detect the usage time of the backup power supply. When the remaining power reaches the alarm preset value, the time that the remaining power can be used is calculated based on the used power and the usage time, and the communication module is sent to the user's smart terminal for reminder, so that the user can consider the use of the refrigerator according to the remaining power supply time and the time to restore the main power supply that he knows. If it is found that the main power supply cannot be used when the backup power supply is used up, the user can think of other methods in advance, thereby improving the practicality of the device.

[0060] The protection circuit adopts an overload protection circuit or an overheat protection circuit.

[0061] like Figure 4-12 As shown, the backup battery includes a box body 1, a box cover 2 is provided at the upper end of the box body 1, a partition 4 is fixed inside the box body 1, the partition 4 divides the box body 1 into a plurality of installation cavities, the battery body is arranged in the installation cavity, a cooling cavity 5 is opened in the side wall of the box body 1, an air outlet pipe 6 and an air exhaust pipe 9 are fixed inside the cooling cavity 5, the air outlet pipe 6 and the air exhaust pipe 9 are connected through a fan 8, the air outlet pipe 6 is connected with the interior of the box body 1 through a plurality of first branch pipes 7, the air exhaust pipe 9 is connected with the interior of the box body 1 through a second branch pipe 10, a refrigerant and a refrigeration component are arranged inside the cooling cavity 5, a liquid storage cavity 11 is opened inside the partition 4, the liquid storage cavity 11 is connected with the cooling cavity 5, a plurality of ventilation pipes 19 are passed through the partition 4, the ventilation pipe 19 is made of heat-conducting material, and heat-conducting plates 20 are fixed to the outer periphery of both ends of the ventilation pipe 19.

[0062] With the above structure, during operation, the inside of the box body 1 is cooled by circulating air through the cooperation of the fan 8, the air outlet duct 6 and the exhaust duct 9. At the same time, through the arrangement of the ventilation duct 19, not only can the uniformity of heat dissipation of multiple batteries during air cooling be achieved, but the temperature emitted by the batteries can also be cooled by the cooling liquid using the ventilation duct 19 and the heat conducting plate 20. Therefore, when the cold air blown out of the air outlet duct 6 passes through the ventilation duct 19, the ventilation duct 19 can be used to cool down the cold air, thereby preventing the cold air from heating up due to passing through the batteries near the air outlet duct 6, which makes the heat dissipation effect of the batteries near the exhaust duct 9 poor, thereby greatly improving the heat dissipation effect.

[0063] A barrier cover 12 is fixed inside the cooling chamber 5, a vent 13 connected to the inside of the barrier cover 12 is provided at the lower end of the inner wall of the box body 1, a driving plate 14 is slidably connected to the inside of the barrier cover 12, a connecting rod 15 is fixed to the lower side of the driving plate 14, the lower end of the connecting rod 15 extends into the cooling chamber 5 and is fixed to a piston plate 16, the piston plate 16 is slidably connected to the cooling chamber 5 around, a connecting pipe 17 is fixed to the inner wall of the box body 1, one end of the connecting pipe 17 is connected to the cooling chamber 5 on the lower side of the piston plate 16, and the other end of the connecting pipe 17 is connected to the cooling chamber 5 on the upper side of the piston plate 16, and a plurality of fire extinguishing ports 21 are provided on the partition 4. A sealing plate 22 is fixed to one end of the interior of the fire extinguishing port 21 close to the liquid storage chamber 11, and a sealing port is opened on the sealing plate 22. A first tension spring 23 is fixed to the side of the sealing plate 22 away from the fire extinguishing port 21, and a slide plate 24 is fixed to the other end of the first tension spring 23. A sealing block is fixed on the slide plate 24, and the sealing block is inserted into the sealing port. A blocking groove 25 is opened on the side of the fire extinguishing port 21 away from the liquid storage chamber 11, and a blocking plate 27 is fixed to the end of the blocking groove 25. The blocking plate 27 is made of a breakable material, and a push plate 26 is fixed to the outer periphery of the slide plate 24. The push plate 26 extends into the blocking groove 25 and is located on the side of the blocking plate 27 close to the liquid storage chamber 11.

[0064] With the above structure, during operation, when the battery temperature exceeds the safety value due to a malfunction or even the battery body expands and is about to explode, the air pressure inside the box body 1 increases, and the gas pressure will be used to push the drive plate 14 down through the vent 13, and the drive plate 14 drives the piston plate 16 to descend through the connecting rod 15. The piston plate 16 descends, so that the coolant under the piston plate 16 enters the cooling chamber 5 and the liquid storage chamber 11 above the piston plate 16 through the connecting pipe 17, so that the pressure in the liquid storage chamber 11 increases, so that the coolant pushes the blocking block. When the pressure increases to a certain extent, the push plate 26 will push the blocking plate 27 and overcome the tension of the first tension spring 23, so that the blocking port is opened, and the coolant is sprayed out through the blocking port, which can not only reduce the temperature of the battery, but also realize the fire extinguishing operation, greatly reducing the probability of battery explosion and improving the safety of equipment use.

[0065] The left and right sides of the lower end of the box body 1 are provided with mounting grooves 3, and a first terminal is fixed in the mounting groove 3, and the first terminal is electrically connected to the battery body. The mounting groove 3 is detachably connected to the mounting box 18, and the right end of the inside of the mounting box 18 is provided with a first slide groove 28, and a first slide seat 29 is slidably connected in the first slide groove 28, and a winding post 30 is rotatably connected on the first slide seat 29, and a spiral winding groove is provided on the winding post 30, and a through groove 40 is provided on the right end of the mounting box 18, and a second slide seat 41 is slidably connected in the through groove 40, and extension grooves 43 are provided at the upper and lower ends of the through groove 40, and extension plates 42 are fixed on the upper and lower sides of the second slide seat 41, and the extension plate 42 extends into the extension groove 43, and a third spring 44 is fixed between the extension plate 42 and the extension groove 43, and a drive shaft 45 is rotatably connected to the second slide seat 41, and the drive shaft 45 is connected to the winding post 30 Fixed connection, an annular seat 60 is fixed on the winding rod 30, an annular sliding cavity 62 is provided inside the annular seat 60, an annular conductive ring 63 is fixed inside the annular sliding cavity 62, a second terminal 61 is fixed on the outer side of the annular seat 60, the second terminal 61 is electrically connected to the annular conductive ring 63, an annular opening is provided on the outer periphery of the annular cavity, a third terminal 66 is slidably connected on the annular opening, the third terminal 66 extends into the annular cavity and is fixed with a conductive sheet 64, an annular sliding groove is provided on the outer periphery of the annular sliding cavity 62, a sliding cover 39 is slidably connected in the annular sliding groove, a first spring 65 is fixed in the sliding cover 39, the other end of the first spring 65 is fixedly connected to the conductive sheet 64, a second sliding groove 67 is provided on the inner bottom side of the mounting box 18, a slider 68 is slidably connected in the second sliding groove 67, and the slider 68 is fixedly connected to the third terminal 66;

[0066] A first sliding cavity 46 is provided inside the driving column, a second tension spring 47 is fixed inside the first sliding cavity 46, a limiting plate 48 is fixed to the other end of the second tension spring 47, a pull rod 49 is fixed to the other side of the limiting plate 48, the other end of the pull rod 49 extends out of the driving column and drives a driving disk 51, the pull rod 49 and the limiting plate 48 are both square structures, a plurality of positioning holes 53 are provided on the left side of the second sliding seat 41, a plurality of positioning rods 52 cooperating with the positioning holes 53 are provided on the driving disk 51, a limiting groove 54 is provided on the left end of the first sliding cavity 46, a second sliding cavity is provided inside the limiting plate 48, and the second sliding cavity There are two first trapezoidal seats 56 slidably connected inside, a second spring 55 is fixed between the first trapezoidal seat 56 and the second sliding cavity, a support rod 50 is slidably connected inside the pull rod 49, the left end of the support rod 50 extends out of the driving disk 51, a first opening 59 for the support rod 50 to extend into the second sliding cavity is opened on the left side of the limiting plate 48, the support rod 50 cooperates with the inclined surface of the first trapezoidal seat 56, a support column 57 is fixed on the first trapezoidal seat 56, a limiting block 58 is fixed on the other end of the support column 57, and second openings for the limiting block 58 to extend out are opened at both upper and lower ends of the second sliding cavity, and the limiting block 58 cooperates with the limiting groove 54;

[0067] The left and right ends of the winding column 30 are rotatably connected with a circular ring 31, and a push rod 32 is fixed to the outer lower end of the circular ring 31. A threading hole 33 is opened at the lower end of the installation box 18, and a sealing ring 34 is fixed to the inner wall of the threading hole 33. An arc plate 35 is arranged between the outer periphery of the sealing ring 34 and the threading barrel, and a guide rod 36 is fixed on the arc plate 35. The guide rod 36 is slidably connected to the side wall of the installation box 18. A driving groove 37 is opened in the installation box 18, and the other end of the guide rod 36 extends into the driving groove 37 and is fixed with a second trapezoidal seat 38. The lower end of the push rod 32 extends into the driving cavity and contacts the inclined surface of the second trapezoidal seat 38.

[0068] With the above structure, when in use, the power cord is connected to the second terminal 61 and wound in the spiral winding groove. At the same time, the first terminal and the third terminal 66 are connected by a wire, and the installation box 18 is installed in the installation groove 3. The arrangement of this structure can not only use the spiral winding groove to store the redundant power cord, but also when the power cord is pulled by external force, the positioning rod 52 is inserted into the positioning hole 53, so that the winding post 30 will not rotate, and the power cord will drive the winding post 30 to move, so that the push rod 32 pushes the second trapezoidal seat 38. The second trapezoidal seat 38 uses the guide rod 36 to make the arc plate 35 squeeze the power cord in the threading hole 33. Therefore, the greater the pulling on the power cord, the greater the clamping force of the wiring hole on the power cord, so that the power cord will not be detached due to pulling. The device is separated from the terminal post to ensure the safety of the equipment. When the length of the power cord needs to be adjusted according to different usage conditions, the drive disk 51 can be pulled outward to make the positioning rod 52 disengage from the positioning hole 53. When the limit plate 48 moves to the left end of the first sliding cavity 46, the support rod 50 is pressed to squeeze the first trapezoidal seat 56 so that the two limit blocks 58 enter the limit groove 54. The drive disk 51 can be rotated to realize the wire release operation. After the wire release is completed, the support rod 50 is pulled outward, and the limit block 58 is disengaged from the limit groove 54 under the action of the second spring 55. Then, the positioning rod 52 is reinserted into the positioning hole 53 under the action of the second tension spring 47. The present invention not only ensures the stability of the power cord connection, but also realizes the retraction and release of the wires. The operation is simple and convenient.

[0069] A method for using an automatically switchable refrigerator backup power system, the steps are as follows:

[0070] S1, the detection module of the switching circuit detects the main power supply of the refrigerator in real time. When a failure of the main power supply is detected, the control module turns on the temperature module;

[0071] S2, the temperature module detects the temperature in the refrigerator in real time after the main power fails. When it is detected that the temperature in the refrigerator rises to a preset value, the control module uses the charge and discharge module to enable the backup power supply to supply power to the refrigerator;

[0072] S3, when the backup power supply is supplied, the power detection module detects the remaining power of the backup power supply, and the timing module detects the usage time of the backup power supply;

[0073] S4. When the remaining power reaches the preset alarm value, the remaining power usage time is calculated based on the power used and the usage time, and sent to the user's smart terminal through the communication module for reminder;

[0074] S5. When the main power supply returns to normal, the control module stops the backup power supply by switching the circuit, and then re-supplies power through the main power supply. The circuit detection module is then used to detect the remaining power of the backup power supply. When the remaining power of the backup power supply reaches the preset charging value, the charge and discharge module is used to charge the backup power supply.

[0075] In summary, by setting up structures such as the temperature detection module and the timing module, it is possible to prevent the backup power supply and the refrigerator from being frequently started and stopped, thereby realizing the protection function of the backup power supply and the refrigerator.

[0076] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

Claims

1. An automatically switchable refrigerator backup power system, comprising a main power supply, a backup power supply, a switching circuit and a refrigerator, characterized in that: The main power supply and the backup power supply are electrically connected to the switching circuit; A switching circuit, electrically connected to the refrigerator, for detecting whether a main power supply fails and switching the main power supply or the backup power supply to supply power to the refrigerator; The switching circuit includes a control module, which is electrically connected to a temperature module. The temperature module is arranged in the refrigerator. When the main power fails, the temperature in the refrigerator is detected and transmitted to the switching circuit. The switching circuit decides when to start the backup power supply when the main power fails based on the temperature information.

2. The automatically switchable refrigerator backup power system according to claim 1, characterized in that: The control module is also electrically connected to a detection module and a switching module. The detection module is used to detect whether a main power supply fails. The switching module is used to switch the backup power supply to supply power to the refrigerator when the main power supply fails.

3. The automatically switchable refrigerator backup power system according to claim 1, characterized in that: The backup power supply includes a backup battery and a protection circuit. The backup power supply is electrically connected to a charging and discharging module, which is electrically connected to the switching circuit. When the backup power supply needs to be charged, the external power supply charges the backup power supply through the charging and discharging module. When the main power supply fails, the backup power supply supplies power to the refrigerator through the charging and discharging module.

4. The automatically switchable refrigerator backup power system according to claim 1, characterized in that: The backup power supply is electrically connected to a power detection module for detecting the remaining power of the backup power supply. When it is detected that the remaining power of the backup power supply reaches a detection value, the charge and discharge module is controlled to charge the backup power supply.

5. The automatically switchable refrigerator backup power system according to claim 4, characterized in that: The control module is also electrically connected to a timing module and a communication module. The communication module is connected to the user's mobile terminal. When the backup power supply is supplied, the timing module times the duration of use of the backup power supply, and calculates the duration of use of the backup power supply in conjunction with the remaining power detected by the power detection module, and sends it to the mobile terminal.

6. The automatically switchable refrigerator backup power system according to claim 3, characterized in that: The protection circuit adopts an overload protection circuit or an overheat protection circuit.

7. The automatically switchable refrigerator backup power system according to claim 3, characterized in that: The backup battery comprises a box body (1), a box cover (2) is arranged at the upper end of the box body (1), a partition (4) is fixed inside the box body (1), the partition (4) divides the box body (1) into a plurality of installation cavities, a battery body is arranged in the installation cavity, a cooling cavity (5) is opened in the side wall of the box body (1), an air outlet pipe (6) and an air exhaust pipe (9) are fixed inside the cooling cavity (5), the air outlet pipe (6) and the air exhaust pipe (9) are connected through a fan (8), and the air outlet pipe (6) passes through a plurality of A branch pipe (7) is connected to the interior of the box body (1), and an exhaust pipe (9) is connected to the interior of the box body (1) through a second branch pipe (10). A refrigerant and a refrigeration component are arranged inside the cooling chamber (5). A liquid storage chamber (11) is provided inside the partition (4), and the liquid storage chamber (11) is connected to the cooling chamber (5). A plurality of ventilation pipes (19) are passed through the partition (4). The ventilation pipes (19) are made of heat-conducting material, and heat-conducting plates (20) are fixed to the outer peripheries of both ends of the ventilation pipes (19).

8. The automatically switchable refrigerator backup power system according to claim 7, characterized in that: A barrier cover (12) is fixed inside the cooling chamber (5); a vent (13) communicating with the interior of the barrier cover (12) is provided at the lower end of the inner wall of the box body (1); a driving plate (14) is slidably connected to the interior of the barrier cover (12); a connecting rod (15) is fixed to the lower side of the driving plate (14); the lower end of the connecting rod (15) extends into the cooling chamber (5) and is fixed with a piston plate (16); the piston plate (16) is slidably connected to the cooling chamber (5) around; a connecting pipe (17) is fixed to the inner wall of the box body (1); one end of the connecting pipe (17) is communicated with the cooling chamber (5) below the piston plate (16); the other end of the connecting pipe (17) is communicated with the cooling chamber (5) above the piston plate (16); a plurality of fire extinguishing ports (2 1), a blocking plate (22) is fixed to one end of the interior of the fire extinguishing port (21) close to the liquid storage chamber (11), a blocking port is formed on the blocking plate (22), a first tension spring (23) is fixed to the side of the blocking plate (22) away from the fire extinguishing port (21), a slide plate (24) is fixed to the other end of the first tension spring (23), a blocking block is fixed to the slide plate (24), the blocking block is inserted into the blocking port, a blocking groove (25) is formed on the side of the fire extinguishing port (21) away from the liquid storage chamber (11), a blocking plate (27) is fixed to the end of the blocking groove (25), the blocking plate (27) is made of a breakable material, a push plate (26) is fixed to the outer periphery of the slide plate (24), the push plate (26) extends into the blocking groove (25) and is located on the side of the blocking plate (27) close to the liquid storage chamber (11).

9. The automatically switchable refrigerator backup power system according to claim 7, characterized in that: The lower end of the box body (1) is provided with a mounting groove (3) on both sides, a first terminal (4) is fixed in the mounting groove (3), the first terminal is electrically connected to the battery body, a mounting box (18) is detachably connected to the mounting groove (3), a first slide groove (28) is provided at the right end inside the mounting box (18), a first slide seat (29) is slidably connected in the first slide groove (28), a winding post (30) is rotatably connected to the first slide seat (29), and a spiral winding groove is provided on the winding post (30) A through slot (40) is provided at the right end of the installation box (18), a second slide seat (41) is slidably connected in the through slot (40), extension slots (43) are provided at the upper and lower ends of the through slot (40), extension plates (42) are fixed at the upper and lower sides of the second slide seat (41), the extension plates (42) extend into the extension slots (43), a third spring (44) is fixed between the extension plates (42) and the extension slots (43), a driving shaft (45) is rotatably connected to the second slide seat (41), and the driving shaft (45) is rotatably connected to the winding shaft (41). The winding post (30) is fixedly connected, an annular seat (60) is fixed on the winding post (30), an annular sliding cavity (62) is provided inside the annular seat (60), an annular conductive ring (63) is fixed inside the annular sliding cavity (62), a second terminal (61) is fixed on the outer side of the annular seat (60), the second terminal (61) is electrically connected to the annular conductive ring (63), an annular opening is provided on the outer periphery of the annular cavity, a third terminal (66) is slidably connected to the annular opening, and the third terminal (66) A conductive sheet (64) extends into the annular cavity and is fixed thereon; an annular sliding groove is provided on the outer periphery of the annular sliding cavity (62); a sliding cover (39) is slidably connected in the annular sliding groove; a first spring (65) is fixed in the sliding cover (39); the other end of the first spring (65) is fixedly connected to the conductive sheet (64); a second sliding groove (67) is provided on the inner bottom side of the installation box (18); a sliding block (68) is slidably connected in the second sliding groove (67); and the sliding block (68) is fixedly connected to the third terminal (66); The driving column is provided with a first sliding cavity (46) inside, a second tension spring (47) is fixed inside the first sliding cavity (46), a limiting plate (48) is fixed to the other end of the second tension spring (47), a pull rod (49) is fixed to the other side of the limiting plate (48), the other end of the pull rod (49) extends out of the driving column and drives a driving disk (51), the pull rod (49) and the limiting plate (48) are both square structures, a plurality of positioning holes (53) are provided on the left side of the second sliding seat (41), a plurality of positioning rods (52) matching with the positioning holes (53) are provided on the driving disk (51), a limiting groove (54) is provided on the left end of the first sliding cavity (46), a second sliding cavity is provided inside the limiting plate (48), and the second sliding cavity Two first trapezoidal seats (56) are slidably connected inside the cavity, a second spring (55) is fixed between the first trapezoidal seat (56) and the second sliding cavity, a support rod (50) is slidably connected inside the pull rod (49), the left end of the support rod (50) extends out of the driving disk (51), a first opening (59) for the support rod (50) to extend into the second sliding cavity is provided on the left side of the limiting plate (48), the support rod (50) cooperates with the inclined surface of the first trapezoidal seat (56), a support column (57) is fixed on the first trapezoidal seat (56), a limiting block (58) is fixed on the other end of the support column (57), and second openings for the limiting block (58) to extend out are provided at both upper and lower ends of the second sliding cavity, and the limiting block (58) cooperates with the limiting groove (54); The left and right ends of the winding column (30) are rotatably connected with a circular ring (31), a push rod (32) is fixed to the lower end of the outer side of the circular ring (31), a threading hole (33) is opened at the lower end of the installation box (18), a sealing ring (34) is fixed to the inner wall of the threading hole (33), an arc plate (35) is arranged between the outer periphery of the sealing ring (34) and the threading barrel, a guide rod (36) is fixed on the arc plate (35), the guide rod (36) is slidably connected to the side wall of the installation box (18), a driving groove (37) is opened in the installation box (18), the other end of the guide rod (36) extends into the driving groove (37) and is fixed with a second trapezoidal seat (38), and the lower end of the push rod (32) extends into the driving cavity and contacts the inclined surface of the second trapezoidal seat (38).

10. The method for using the automatically switchable refrigerator backup power system according to claim 1, characterized in that: Here are the steps: S1, the detection module of the switching circuit detects the main power supply of the refrigerator in real time. When a failure of the main power supply is detected, the control module turns on the temperature module; S2, the temperature module detects the temperature in the refrigerator in real time after the main power fails. When it is detected that the temperature in the refrigerator rises to a preset value, the control module uses the charge and discharge module to enable the backup power supply to supply power to the refrigerator; S3, when the backup power supply is supplied, the power detection module detects the remaining power of the backup power supply, and the timing module detects the usage time of the backup power supply; S4. When the remaining power reaches the preset alarm value, the remaining power usage time is calculated based on the used power and usage time, and sent to the user's smart terminal through the communication module for reminder; S5. When the main power supply returns to normal, the control module stops the backup power supply by switching the circuit, and then re-supplies power through the main power supply. The circuit detection module is then used to detect the remaining power of the backup power supply. When the remaining power of the backup power supply reaches the preset charging value, the charge and discharge module is used to charge the backup power supply.

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