US20200333063A1 - Portable Refrigerator - Google Patents
Portable Refrigerator Download PDFInfo
- Publication number
- US20200333063A1 US20200333063A1 US16/856,889 US202016856889A US2020333063A1 US 20200333063 A1 US20200333063 A1 US 20200333063A1 US 202016856889 A US202016856889 A US 202016856889A US 2020333063 A1 US2020333063 A1 US 2020333063A1
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- US
- United States
- Prior art keywords
- battery
- resistor
- terminal
- compartment
- recited
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
- 238000001816 cooling Methods 0.000 claims abstract description 21
- 239000003507 refrigerant Substances 0.000 claims abstract description 7
- 230000002093 peripheral effect Effects 0.000 claims description 27
- 230000000881 depressing effect Effects 0.000 claims description 14
- 230000008602 contraction Effects 0.000 claims description 2
- 239000003990 capacitor Substances 0.000 description 128
- 238000010586 diagram Methods 0.000 description 10
- 101000746134 Homo sapiens DNA endonuclease RBBP8 Proteins 0.000 description 8
- 101000969031 Homo sapiens Nuclear protein 1 Proteins 0.000 description 8
- 102100021133 Nuclear protein 1 Human genes 0.000 description 8
- 238000004873 anchoring Methods 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D19/00—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors
- F25D19/003—Arrangement or mounting of refrigeration units with respect to devices or objects to be refrigerated, e.g. infrared detectors with respect to movable containers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D11/00—Self-contained movable devices, e.g. domestic refrigerators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B27/00—Machines, plants or systems, using particular sources of energy
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B49/00—Arrangement or mounting of control or safety devices
- F25B49/02—Arrangement or mounting of control or safety devices for compression type machines, plants or systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/02—Doors; Covers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/06—Walls
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2600/00—Control issues
- F25B2600/02—Compressor control
- F25B2600/024—Compressor control by controlling the electric parameters, e.g. current or voltage
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2331/00—Details or arrangements of other cooling or freezing apparatus not provided for in other groups of this subclass
- F25D2331/80—Type of cooled receptacles
- F25D2331/804—Boxes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
- F25D2400/10—Refrigerator top-coolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
- F25D2400/12—Portable refrigerators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
- F25D2400/20—Carts specially adapted for transporting objects to be cooled
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
- F25D2400/38—Refrigerating devices characterised by wheels
Definitions
- the present invention relates to a refrigerator, and more particularly to a portable refrigerator comprising a rechargeable battery pack which many be detachable from a main housing and may be recharged through a conventional AC power source, a detachable solar panel, a car power output, and any DC power supply.
- a conventional portable refrigerator may utilize a compressor for actuating heat exchange between a storage compartment and ambient environment.
- a major disadvantage of conventional portable refrigerators relates to acquiring power for maintaining heat exchange processes which take place in various components of the portable refrigerators.
- a majority of portable refrigerators is electrically connected to a power port provided in a car.
- An obvious problem for this arrangement is that when the portable refrigerator is operating, the car must also be started to allow continuous supply of electrical power from the power port of the car.
- Some conventional portable refrigerators utilize solar panels to collect solar energy and store the solar energy in a rechargeable battery embedded in the corresponding portable refrigerator.
- a problem with this type of portable refrigerators is that the rechargeable batteries cannot be taken out from the refrigerators.
- the rechargeable batteries may or may not be charged by other means, such as connecting the portable refrigerators to a wall power supply. Even if the portable refrigerator can be connected to a wall power supply, it would be very inconvenience for a user to do so.
- Certain variations of the present invention provide a portable refrigerator comprising a rechargeable battery pack which many be detachable from a main housing and may be recharged through a conventional AC power source or by a detachable solar panel.
- Certain variations of the present invention provide a portable refrigerator in which various components of the portable refrigerator can be centrally controlled by a central control unit.
- Certain variations of the present invention provide a portable refrigerator in which the central control unit is arranged to utilize uninterruptible power supply (UPS) so that it provides near-instantaneous protection from input power interruptions to the compressor and other components of a cooling mechanism.
- UPS uninterruptible power supply
- a portable refrigerator comprising:
- a main housing having an accommodating cavity for storing at least one item, and a power compartment;
- a refrigerator cover provided on the main housing for selectively closing the accommodating cavity
- a cooling mechanism which is supported by the main housing and comprises a plurality of heat exchanging tubes, a compressor, an evaporator connected to the compressor through at least one of the heat exchanging tubes, and a condenser connected to the evaporator and the compressor through at least one of the heat exchanging tubes;
- a rechargeable battery pack detachably attached on the power compartment of the main housing, the rechargeable battery being adapted for connecting to a power source;
- a central control unit supported in the main housing and electrically connected to the rechargeable battery pack and the cooling mechanism for centrally controlling an operation of the cooling mechanism, wherein a predetermined amount of refrigerant is arranged to controllably pass through the heat exchanging tubes, the condenser, the evaporator and the compressor for extracting heat from the accommodating cavity.
- FIG. 1 is a front perspective view of a portable refrigerator according to a preferred embodiment of the present invention.
- FIG. 2 is a rear perspective view of the portable refrigerator according to the preferred embodiment of the present invention.
- FIG. 3 is a schematic diagram of the portable refrigerator according to the preferred embodiment of the present invention.
- FIG. 4 is an exploded perspective view of the portable refrigerator according to the preferred embodiment of the present invention.
- FIG. 5 is a schematic diagram of a bottom wall of a main housing of the portable refrigerator according to the preferred embodiment of the present invention.
- FIG. 6 is a schematic diagram of the portable refrigerator according to the preferred embodiment of the present invention, illustrating connection between a refrigerator cover and a main housing.
- FIG. 7 is a perspective view of the refrigerator cover according to the preferred embodiment of the present invention.
- FIG. 8 is another perspective view of the refrigerator cover according to the preferred embodiment of the present invention.
- FIG. 9 is a perspective view of a power compartment of the portable refrigerator according to the preferred embodiment of the present invention, illustrating a bottom portion of the power compartment.
- FIG. 10 is a perspective view of the power compartment of the portable refrigerator according to the preferred embodiment of the present invention, illustrating a lower portion of the power compartment.
- FIG. 11 is a front view of the power compartment of the portable refrigerator according to the preferred embodiment of the present invention.
- FIG. 12 is an exploded perspective view of the rechargeable battery pack of the portable refrigerator according to the preferred embodiment of the present invention.
- FIG. 13 is a perspective view of the actuating member of the portable refrigerator according to the preferred embodiment of the present invention.
- FIG. 14 is a schematic diagram of the rechargeable battery pack of the portable refrigerator according to the preferred embodiment of the present invention.
- FIG. 15 is a block diagram of a central control unit and cooling mechanism of the portable refrigerator according to the preferred embodiment of the present invention.
- FIG. 16 is a top perspective view of the rechargeable battery pack of the portable refrigerator according to the preferred embodiment of the present invention.
- FIG. 17 is a bottom perspective view of the rechargeable battery pack of the portable refrigerator according to the preferred embodiment of the present invention.
- FIG. 18 is a block diagram of a central control unit of the portable refrigerator according to the preferred embodiment of the present invention.
- FIG. 19A to FIG. 19E are circuit diagrams of a charging control module of a central control unit of the portable refrigerator according to the preferred embodiment of the present invention.
- FIG. 20A to FIG. 20H are circuit diagrams of a solar charging module of a central control unit of the portable refrigerator according to the preferred embodiment of the present invention.
- the portable refrigerator may comprise a main housing 10 , a refrigerator cover 20 , a cooling mechanism 30 , a rechargeable battery pack 40 , and a central control unit 50 .
- the main housing 10 has an accommodating cavity 11 for storing at least one item, and a power compartment 12 .
- the refrigerator cover 20 may be provided on the main housing 10 for selectively closing the accommodating cavity 11 .
- the cooling mechanism 30 may be supported by the main housing 10 and comprises a plurality of heat exchanging tubes 31 , a compressor 32 , an evaporator 33 connected to the compressor 32 through at least one of the heat exchanging tubes 31 , and a condenser 34 connected to the evaporator 33 and the compressor 32 through at least one of the heat exchanging tubes 31 .
- the rechargeable battery pack 40 may be detachably attached on the power compartment 12 of the main housing 10 . Moreover, the rechargeable battery pack may be adapted for connecting to a power source.
- the central control unit 50 may be supported in the main housing 10 and electrically connected to the rechargeable battery pack 40 and the cooling mechanism 30 for centrally controlling an operation of the cooling mechanism 30 , wherein a predetermined amount of refrigerant is arranged to controllably pass through the heat exchanging tubes 31 , the condenser 34 , the evaporator 33 and the compressor 31 for extracting heat from the accommodating cavity 11 .
- the portable refrigerator may be utilized in outdoor environment as a self-contained unit.
- the main housing 10 may comprise a front wall 141 , a rear wall 142 , and two side walls 143 , wherein the accommodating cavity 11 may be formed as a space between a space surrounded by the front wall 141 , the rear wall 142 and the side walls 143 .
- the main housing 10 may further have an access opening 17 formed on a top side thereof as a top opening of the accommodating cavity 11 .
- the accommodating cavity 11 may communicate with an exterior of the main housing 10 through the access opening 17 .
- the main housing 10 may further comprise a first side peripheral rim 103 , a second side peripheral rim 104 and a rear peripheral rim 105 upwardly extended from an outer surface of the two side walls 143 and the rear wall 142 respectively for connecting to the refrigerator cover 20 (described in more details below).
- the access opening 17 may therefore be formed at a position below the first side peripheral rim 103 , the second side peripheral rim 104 and the rear peripheral rim 105 .
- a cover seat 106 may be formed as the space on top of the two side walls 143 , the rear wall 142 and the front wall 141 and surrounded by the first side peripheral rim 103 , the second side peripheral rim 104 and the rear peripheral rim 105 .
- the main housing 10 may further have a components compartment 13 formed adjacent to the accommodating cavity 11 for storing various mechanical and electrical components of the portable refrigerator.
- the main housing 10 may further comprise a plurality of wheels 15 rotatably provided on two side walls 143 respectively for facilitating easy transportation of the portable refrigerator. Moreover, the main housing 10 may further comprise a retractable handle 16 provided on the rear wall 142 so that a user may utilize the retractable handle 16 to carry the portable refrigerator. The main housing 10 may further comprise a plurality of hanging members 14 formed on the rear wall 142 for allowing an external objects to be hung thereon. Furthermore, the main housing 10 may further comprise an anchoring member 140 formed on a bottom wall 144 of the main housing 10 so that a user may tie an external object on the main housing by using the anchoring member 140 .
- the refrigerator cover 20 may be detachably attached on the main housing 10 to selectively close the access opening 17 .
- the refrigerator cover 20 may comprise a cover body 21 having a top surface 211 , a bottom surface 212 , a first side surface 213 and a second side surface 214 .
- the cover body 21 may have a plurality of (but at least one) indentions 215 formed on the top surface 211 for holding cups or other beverage containers.
- there may be three indentions 215 two of which may have a circular cross section when viewed from the top while the remaining indention 215 may have a rectangular cross section also when viewed from the top.
- the refrigerator cover 20 may further comprise a frictional member 22 provided on one of the indentions 215 of the cover body 21 , wherein the frictional member 22 may be configured to have a greater frictional force than other parts of the refrigerator cover 20 so that when external items, such as tablet computers, are disposed on the frictional member 22 , the external items may be retained on the frictional member 22 .
- the refrigerator cover 20 may further comprise a first connecting member 23 and the second connecting member 24 extended from the first side surface 213 and the second side surface 214 of the cover body 21 respectively for pivotally and detachably connecting to the main housing 10 .
- the first connecting member 23 may be outwardly extended from the first side surface 213 and may be configured as having a cylindrical shape (i.e. circular cross-sectional shape) for pivotally connecting to the main housing 10 .
- the second connecting member 24 may have a quadrilateral or rectangular cross-sectional shape and may be outwardly extended from the second side surface 214 .
- the main housing 10 may further has a first pivotal slot 101 and a second pivotal slot 102 formed on the first side peripheral rim 103 and the second side peripheral rim 104 respectively, wherein the first connecting member 23 and the second connecting member 24 may be arranged to pivotally and detachably connect to the first pivotal slot 101 and the second pivotal slot 102 respectively.
- the first pivotal slot 101 may be shaped and sized to correspond to a cross sectional shape of the first connecting member 23 so that when the first connecting member 23 is inserted into the first pivotal slot 101 , the first connecting member 23 may freely rotate about a longitudinal axis of the first pivotal slot 101 .
- the first pivotal slot 101 may also be configured as such.
- the second pivotal slot 102 may be inclinedly extended from a top surface of the second side peripheral rim 104 so as to form a top opening 1041 on the second side peripheral rim 104 as the top end of the second pivotal slot 102 .
- the second pivotal slot 102 may downwardly and inclinedly extend from the top opening 1041 along an inner side surface 1042 of the second side peripheral rim 104 .
- the second pivotal slot 102 may have an enlarged portion 1021 and a contracted extension portion 1022 extended between the enlarged portion 1021 and the top opening 1041 , wherein the second connecting member 24 may be arranged pivotally move in the enlarged portion 1021 and to slide along the contraction extension portion 1022 only when the second connecting member 24 aligns with the contracted extension portion 1022 .
- the second connecting member 24 when the second connecting member 24 is inserted into the enlarged portion 1021 of the second pivotal slot 102 , the second connecting member 24 may rotate about a longitudinal axis of the enlarged portion 1021 of the second pivotal slot 102 . Since a width of the contracted extension portion 1022 is smaller than that of the enlarged portion 1021 , when the second connecting member 24 is in the enlarged portion 1021 , the second connecting member 24 may normally be prevented from sliding along the contracted extension portion 1022 . However, when the second connecting member 24 is in the enlarged portion 1021 and aligns with the contracted extension portion 1022 , the second connecting member 24 may slide along the contracted extension portion 1022 and detach from the second side peripheral rim 104 through the top opening 1041 .
- This arrangement ensures that the refrigerator cover 20 may only detach from the main housing 10 when the refrigerator cover 20 is pivotally moved to a predetermined angle of inclination with respect to the main housing 10 .
- This angle of inclination is the angle of inclination of the contracted extension portion 1022 forming on the second side peripheral rim 104 .
- the cooling mechanism 30 may comprise the compressor 32 , the evaporator 33 and the condenser 34 . They may be connected by the heat exchanging tubes 31 .
- the compressor 32 and the condenser 34 may be positioned in the components compartment 13 of the main housing 10 .
- a predetermined amount of refrigerant may flow through the heat exchanging tubes 31 for performing heat exchange with another physical medium so as to extract heat from the accommodating cavity 11 .
- the cooling mechanism 30 may further comprise a fan 35 provided in the components compartment 13 while the main housing 10 may further have a plurality of ventilating slots 18 which communicate the components compartment 13 with an exterior of the main housing 10 .
- the fan 35 may be driven to draw air into the components compartment 13 through the ventilating slots 18 .
- Ambient air having lower temperature may be used to cool down the refrigerant which flows through the condenser 34 and carries heat from the accommodating cavity 11 .
- the fan 35 may be mounted adjacent to the condenser 34 for effectively remove heat from the refrigerant flowing through the condenser 34 .
- the fan 35 may also be electrically connected to the central control unit 50 so that it may also be centrally connected by the central control unit.
- the rechargeable battery pack 40 may comprise a battery housing 41 and a battery core 42 received in the battery housing 41 for storing electric power.
- the battery housing 41 may have a front battery surface 411 , a rear battery surface 412 , two side battery surfaces 413 , a top battery surface 414 and a bottom battery surface 415 .
- the battery housing 41 may be configured to resemble a largely rectangular cross-sectional shape when viewed from the front.
- the battery housing 41 may be fittedly and detachably accommodated in the power compartment 12 of the main housing 10 .
- the rechargeable battery pack 40 may further comprise a locking arrangement 43 operatively provided on the battery housing 41 for allowing the battery housing 41 to be selectively locked or detached from the power compartment 12 .
- the locking arrangement 43 may comprise a first actuating member 431 , a second actuating member 432 and a plurality of resilient element 433 mounted on the first actuating member 431 and the second actuating member 432 to normally exert a biasing force thereto.
- the first actuating member 431 has a first locking latch 4311 , a second locking latch 4312 , and a first depressing member 4313 positioned between the first locking latch 4311 and the second locking latch 4312 .
- the first actuating member 431 may be mounted in the battery housing 41 such that the first locking latch 4311 , the second locking latch 4312 and the first depressing member 4313 may align with three of the corresponding through passage holes 435 respectively.
- At least one of the resilient elements 433 may normally exert a biasing force against the first actuating member 431 so as to drive the first locking latch 4311 , the second locking latch 4312 and the first depressing member 4313 to normally expose out of the battery housing 41 through the corresponding through passage holes 435 .
- the second actuating member 432 has a third locking latch 4321 , a fourth locking latch 4322 , and a second depressing member 4323 positioned between the third locking latch 4321 and the fourth locking latch 4322 .
- the second actuating member 432 may be mounted in the battery housing 41 such that the third locking latch 4321 , the fourth locking latch 4322 and the second depressing member 4323 may align with another three of the corresponding through passage holes 435 respectively.
- At least one of the resilient elements 433 may normally exert a biasing force against the second actuating member 432 so as to drive the third locking latch 4321 , the fourth locking latch 4322 and the second depressing member 4323 to normally expose out of the battery housing 41 through the corresponding through passage holes 435 .
- first actuating member 431 may be provided on an upper portion of the battery housing 41 while the second actuating member 432 may be provided on a lower portion of the same battery housing 41 . Accordingly, two of the through passage holes 435 may be provided on the top battery surface 414 , and another two of the through passage holes 435 may be provided on the bottom battery surface 415 of the battery housing 41 .
- the battery housing 41 may further have a first battery indention 416 indently formed on the front battery surface 411 and the top battery surface 414 .
- the battery housing 41 may further have a second battery indention 417 indently formed on the front battery surface 411 and the bottom battery surface 415 wherein two of the through passage holes 435 may be formed on the first indention surface 4161 of the first battery indention 416 and a second indention surface 4171 of the second battery indention 417 respectively.
- the first depressing member 4313 and the second depressing member 4323 may be pushed to expose out of the battery housing 41 through the through passage holes 435 formed on the inner surfaces 4161 of the battery indentions 416 respectively.
- the first battery indention 416 may be formed at a position between the first locking latch 4311 and the second locking latch 4312
- the second battery indention 417 may be formed at a position between the third locking latch 4321 and the fourth locking latch 4322 .
- the first indention surface 4161 may be substantially parallel to the top battery surface 414
- the second indention surface 4171 may be substantially parallel to the bottom battery surface 415 .
- the battery housing 41 may be divided into a front thicker portion 418 and a rear thinner portion 419 so that a vertical height of the front thicker portion 418 is greater than that of the rear thinner portion 419 .
- the bottom battery surface 415 of the battery housing 41 may be divided into a front section 4151 and a rear section 4152 , wherein the front section 4151 may be formed as the bottom surface of the front thicker portion 418 of the battery housing 41 , while the rear section 4152 may be formed as the bottom surface of the rear thinner portion 419 .
- the second battery indention 417 , the third locking latch 4321 and the fourth locking latch 4322 may be provided on the front section 4151 of the bottom battery surface 415 .
- a biasing surface 4153 may be formed as the boundary surface between the front section 4151 and the rear section 4152 . This biasing surface 4153 may be parallel to the front battery surface 411 and the rear battery surface 412 .
- the battery housing 41 may further have a plurality of securing slots 410 formed on the top battery surface 414 and rear section 4152 of the bottom battery surface 415 respectively. These securing slots 410 may be formed on the rear thinner portion 419 of the battery housing 41 .
- the rechargeable battery pack 40 may further comprise a connection port 44 provided on the bottom battery surface 415 of the battery housing 41 .
- the connection port 44 may be electrically connected to the battery core 42 so that it may be used as a power outlet for the rechargeable battery pack 40 .
- the connection port 44 may be provided on the front section 4151 of the bottom battery surface 415 and the biasing surface 4153 .
- the battery housing 41 may further have a plurality of positioning recesses 401 provided on the bottom battery surface 415 for further assisting positioning of the battery housing 41 in the power compartment 12 .
- Each of the positioning recesses 401 may extend on the front section 4151 and the biasing surface 4153 and align with a longitudinal direction of a corresponding securing slot 420 .
- the power compartment 12 may be surrounded by a plurality of surfaces. Specifically, the power compartment 12 may be surrounded by a top compartment surface 121 , a bottom compartment surface 122 , a rear compartment surface 123 , and two side compartment surfaces 124 . The power compartment 12 may therefore be surrounded by the top compartment surface 121 , the bottom compartment surface 122 , the rear compartment surface 123 , and the two side compartment surfaces 124 . Moreover, the main housing 10 may further have a compartment opening 125 communicating the power compartment 12 with an exterior of the main housing 10 . Thus, the power compartment 12 may be defined as a cavity for accommodating the rechargeable battery pack 40 and may be surrounded by the top compartment surface 121 , the bottom compartment surface 122 , the rear compartment surface 123 , and the two side compartment surfaces 124 .
- the bottom compartment surface 122 may also be divided into a front segment 1221 and a rear segment 1222 wherein a vertical height of the front segment 1221 and the rear segment 1222 with respect to the top compartment surface 121 may be different.
- the front segment 1221 may be formed at a position lower than that of the rear segment 1222 .
- An urging surface 1223 may be formed as the boundary surface between the front segment 1221 and the rear segment 1222 . This urging surface 1223 may be parallel to the rear compartment surface 123 .
- the main housing 10 may further comprise a plurality of securing ridges 1224 formed on the top compartment surface 121 and the rear segment 1222 of the bottom compartment surface 122 at positions corresponding to the securing slots 420 of the battery housing 41 .
- the securing ridges 1224 may be arranged to engage with the securing slots 420 respectively so as to secure the rechargeable battery back 40 in the power compartment 12 .
- the main housing 10 may further comprise a plurality of positioning protrusions 1225 formed on the front segment 1221 of the bottom compartment surface 122 at positions corresponding to the positioning recesses 401 of the battery housing 41 .
- the positioning protrusions 1225 may be arranged to engage with the positioning recesses 401 respectively so as to secure the rechargeable battery back 40 in the power compartment 12 .
- the main housing 10 may further comprise a power inlet 19 formed on the urging surface 1223 of the power compartment 12 for electrically connecting to the connection port 44 of the rechargeable battery pack 40 .
- the portable refrigerator may further comprise a solar energy arrangement 60 which may comprise a solar panel 61 detachably attached on the main housing 10 provided in the components compartment 13 and electrically connected to the central control unit 50 .
- the main housing 10 may detachably connect to the solar panel 61 for collecting solar energy.
- the solar energy collected may be controlled and managed by the central control unit 50 .
- the solar energy may be stored in the rechargeable battery pack 40 .
- the solar energy may then be converted into electrical energy which may be supplied to various components of the portable refrigerator as controlled by the central control unit 50 .
- the central control unit 50 may comprise a charging control module 51 , a solar charging module 52 , and an energy management module 53 .
- FIG. 19A to FIG. 19E illustrate the circuit diagram for each of the charging control module 51 while FIG. 20A to FIG. 20H illustrate the circuit diagram of the solar charging module 52 .
- the charging control module 51 may comprise an integrated chip HT7536-1, an integrated chip U 3 , an integrated chip U 4 , an integrated chip U 7 , a Zener diode ZD 1 , a diode D 5 , a diode D 6 , a diode D 7 , a diode D 8 , a light emitting diode LD 3 , a light emitting diode LD 4 , a light emitting diode LDS, a light emitting diode LD 6 , a transistor Q 7 , a metal-oxide-semiconductor field-effect transistor MOSFET Q 1 , a MOSFET Q 2 , a MOSFET Q 3 , a MOSFET Q 4 , a MOSFET Q 5 , a MOSFET Q 6 , a resistor R 1 , a resistor R 2 , a resistor R 3 , a resistor R 5 , a resistor R 7 , a resist
- the solar charging module 52 may comprise an integrated chip JP 1 , an integrated chip P 1 , an integrated chip U 4 , the integrated chip U 3 , an integrated chip USB, an integrated chip COM 1 , a diode D 1 , a diode D 2 , a diode D 3 , a diode D 4 , the diode D 5 , the diode D 6 , the Zener diode ZD 1 , a Zener diode ZD 2 , a Zener diode U 1 , a transistor Q 1 , a transistor Q 2 , a transistor Q 3 , a transistor Q 4 , a transistor Q 5 , a transistor Q 7 , a MOSFET UA 1 , a MOSFET UA 2 , a MOSFET UA 3 , a resistor group RP 1 , a resistor group RP 2 , the inductor L 1 , a variable resistor RT 2 , a variable resistor MOV 1
- Each of the above-mentioned resistors and capacitors may have two terminals.
- Each of the above-mentioned diodes and Zener diodes may have a positive terminal and a negative terminal.
- Each of the above-mentioned transistors may have a gate terminal, an emitter terminal, and a collector terminal,
- Each of the above-mentioned MOSFET may have a source terminal, a gate terminal and a drain terminal.
- one terminal of resistor R 8 may be electrically connected to a negative terminal of the Zener diode ZD 1 , a Gate terminal of MOSFET Q 1 .
- Another terminal of the resistor R 8 may be electrically connected to a power source VCC, capacitor C 10 , capacitor C 19 and a Drain terminal of MOSFET Q 2 .
- a Source terminal of MOSFET Q 1 , a positive terminal of Zener diode ZD 1 , a terminal of resistor R 1 and a terminal of resistor R 9 may be connected to Ground. Another terminal of resistor R 1 may be electrically connected to capacitor C 10 and another terminal of resistor R 9 .
- Resistor R 11 may be electrically connected to capacitor C 3 , resistor R 23 , and a sixth pin of integrated chip U 3 .
- Capacitor C 3 and resistor R 25 may also be connected to Ground.
- Resistor C 19 may be electrically connected to resistor R 13 , resistor R 26 , capacitor C 20 , and a Gate terminal of MOSFET Q 3 .
- Resistor R 13 may be electrically connected to a Gate terminal of MOSFET Q 2 .
- a Source terminal of MOSFET Q 2 may be electrically connected to resistor R 27 , capacitor C 20 and a Source terminal of MOSFET Q 3 .
- Resistor R 26 may be electrically connected to a fourth pin of integrated chip U 3 .
- Resistor R 27 may be electrically connected to a fourth pin of integrated chip U 3 .
- a Drain terminal of MOSFET Q 3 may be electrically connected to a terminal of resistor R 14 , a terminal of resistor R 15 , a terminal of capacitor C 6 , a terminal of capacitor C 16 and second pin of integrated chip U 3 .
- Another terminal of resistor R 14 may also be electrically connected to another terminal of resistor R 15 , another terminal of capacitor C 6 , a terminal of capacitor C 17 , a terminal of capacitor C 12 , a terminal of capacitor C 14 , a terminal of capacitor C 15 , a Drain terminal of MOSFET Q 4 , a Drain terminal of MOSFET Q 5 , an output J 3 , and a first pin of integrated chip U 3 .
- Another terminal of capacitor C 16 and another terminal of capacitor C 17 may be connected to the Ground.
- another terminal of capacitor C 12 , another terminal of capacitor C 14 , and another terminal of capacitor C 15 may also be connected to Ground.
- Signal ACOK may be electrically connected to a fifth pin of integrated chip U 3 .
- Signal IADP may be electrically connected to a terminal of capacitor C 31 and a seventh pin of integrated chip U 3 .
- Signal IDCHG may be electrically connected to a terminal of capacitor C 32 and an eighth pin of integrated chip U 3 .
- Another terminal of capacitor C 31 and capacitor C 32 may be connected to Ground.
- Signal PMON may be electrically connected to a ninth pin of integrated chip U 3 .
- Signal PRO may be electrically connected to a tenth pin of integrated chip U 3 .
- Signal SDA may be electrically connected to a terminal of resistor R 34 and an eleventh pin of integrated chip U 3 .
- Signal SCL may be electrically connected to a terminal of resistor R 35 and a twelfth pin of integrated chip U 3 .
- Another terminal of resistor R 34 and resistor R 35 may be connected to +3.6V voltage supply.
- Signal TB-STAT may be electrically connected to a sixteenth pin of integrated chip U 3 .
- a positive terminal of diode D 7 may be electrically connected to positive voltage supply VCC.
- a positive terminal of diode D 6 may be electrically connected to power supply BAT.
- a negative terminal of diode D 7 may be electrically connected to a negative terminal of diode D 6 and a terminal of resistor R 20 .
- Another terminal of resistor R 20 may be electrically connected to another terminal of capacitor C 22 , and a twenty eighth pin of integrated chip U 3 .
- Another terminal of capacitor C 22 may be connected to the Ground.
- a Source terminal of MOSFET Q 4 may be electrically connected to twenty seventh pin of integrated chip U 3 , a terminal of capacitor C 21 , a Drain terminal of MOSFET Q 6 , and a terminal of inductor L 1 .
- a Gate terminal of MOSFET Q 4 may be electrically connected to a twenty sixth pin of integrated chip U 3 , another terminal of capacitor C 21 , and a terminal of resistor R 23 . Another terminal of resistor R 23 may be electrically connected to a twenty fifth pin of integrated chip U 3 . A terminal of capacitor C 23 may be electrically connected to a twenty fourth pin of integrated chip U 3 . Another terminal of capacitor C 23 may be electrically connected to a terminal of resistor R 24 . A terminal of capacitor C 30 , and a twenty second pin of integrated chip U 3 may be connected to the Ground.
- a Gate terminal of MOSFET Q 6 may be electrically connected to a twenty third pin of integrated chip U 3 and a terminal of capacitor C 27 .
- a Source terminal of MOSFET Q 6 and another terminal of capacitor C 27 may be connected to the Ground.
- Another terminal of resistor R 24 may be electrically connected to another terminal of capacitor C 30 , a terminal of resistor R 28 , and a twenty first pin of integrated chip U 3 .
- Another terminal of resistor R 28 may be electrically connected to +3.6V voltage supply.
- a terminal of resistor R 29 may be electrically connected to a twentieth pin of integrated chip U 3 .
- resistor R 29 may be electrically connected to Source terminal of MOSFET Q 5 , a terminal of capacitor C 18 , another terminal of inductor L 1 , a terminal of resistor R 5 , a terminal of resistor R 7 , a terminal of capacitor C 24 , a terminal of capacitor C 28 , and a terminal of resistor R 32 .
- a terminal of resistor R 30 may be electrically connected to a nineteenth pin of integrated chip U 3 .
- Another terminal of resistor R 30 may be electrically connected to another terminal of resistor R 5 , another terminal of resistor R 7 , another terminal of capacitor C 24 , a terminal of capacitor C 29 , a terminal of capacitor C 25 , a terminal of capacitor C 26 , a positive terminal of power supply BAT, a terminal of resistor R 2 , a terminal of resistor R 3 , a third pin of integrated chip U 4 .
- Another terminal of capacitor C 28 may be electrically connected to another terminal of capacitor C 29 .
- Another terminal of capacitor C 25 , another terminal of capacitor C 26 , a negative terminal of power supply J 8 , an output terminal of power supply J 10 and power supply J 7 may all be electrically connected to Ground.
- a Gate terminal of MOSEFT Q 5 may be electrically connected to another terminal of capacitor C 18 and a terminal of resistor R 31 .
- Another terminal of resistor R 31 may be electrically connected to an eighteenth pin of integrated chip U 3 .
- Another terminal of resistor R 32 may be electrically connected to a seventeenth pin of integrated chip U 3 .
- Another terminal of resistor R 2 may be electrically connected to another terminal of resistor R 3 , a first pin of integrated chip U 4 , and power supply J 6 .
- a second pin of integrated chip U 4 may be electrically connected to a terminal of resistor R 39 , and a terminal of resistor R 38 .
- Another terminal of resistor R 39 may be connected to Ground.
- Another terminal of resistor R 38 may be electrically connected to signal SUN-ISEN, a terminal of capacitor C 34 and a positive terminal of diode D 8 .
- a negative terminal of diode D 8 and another terminal of capacitor C 34 may be connected to Ground.
- a terminal of resistor R 37 may be electrically connected to signal DATA, while another terminal of resistor R 37 may be connected to Base terminal of transistor Q 7 .
- a collector terminal of transistor Q 7 may be electrically connected to a terminal of resistor R 36 and a second pin of power source J 2 .
- Another terminal of resistor R 36 may be electrically connected to +3.6V voltage source.
- An emitter terminal of transistor Q 7 and a first pin of power source J 2 may be connected to the Ground.
- capacitor C 8 may be electrically connected to +3.6 voltage source, and a first pin of integrated chip U 7 . Another terminal of capacitor C 8 may be electrically connected to a second pin of integrated chip U 7 .
- Signal ACOK may be electrically connected to a third pin of integrated chip U 7 .
- Signal LD 1 may be electrically connected to a fourth pin of integrated chip U 7 .
- Signal LD 2 may be electrically connected to a fifth pin of integrated chip U 7 .
- Signal LD 3 may be electrically connected to a sixth pin of integrated chip U 7 .
- Signal LD 4 may be electrically connected to a seventh pin of integrated chip U 7 .
- Signal IADP may be electrically connected to a tenth pin of integrated chip U 7 .
- Signal IDCHG may be electrically connected to an eleventh pin of integrated chip U 7 .
- Signal SUN-ISEN may be electrically connected to twelfth pin of integrated chip U 7 .
- Signal PRO may be electrically connected to thirteenth pin of integrated chip U 7 .
- Signal SDA may be electrically connected to fourteenth pin of integrated chip U 7 .
- Signal SCL may be electrically connected to fifteenth pin of integrated chip U 7 .
- Signal DATA may be electrically connected to sixteenth pin of integrated chip U 7 .
- a terminal of resistor R 12 may be electrically connected to a ninth pin of integrated chip U 7 .
- a terminal of resistor R 10 , a terminal of capacitor C 11 , and another terminal of resistor R 10 may be electrically connected to power source BAT. Another terminal of resistor R 12 and another terminal of capacitor C 11 may be connected to the Ground.
- the +3.6V voltage source may be connected to a positive terminal of light emitting diode LLD 3 , a position terminal of light emitting diode LD 4 , a positive terminal of light emitting diode LD 5 , and a positive terminal of light emitting diode LD 6 .
- a negative terminal of light emitting diode LD 3 may be electrically connected to a terminal of resistor R 16 , while another terminal of resistor R 16 may be electrically connected to signal LD 1 .
- a negative terminal of light emitting diode LD 4 may be electrically connected to a terminal of resistor R 17 , while another terminal of resistor R 17 may be electrically connected to signal LD 2 .
- a negative terminal of light emitting diode LD 5 may be electrically connected to a terminal of resistor R 18 , while another terminal of resistor R 18 may be electrically connected to signal LD 3 .
- Resistor R 19 may have one terminal electrically connected to light emitting diode LD 6 , and another terminal electrically connected to signal LD 4 .
- Resistor R 21 may have one terminal electrically connected to voltage source VCC, and another terminal electrically connected to a negative terminal of diode D 5 , a second pin of integrated chip HT7536-1, and a terminal of capacitor C 2 . Another terminal of capacitor C 2 may be connected to the Ground.
- a positive terminal of diode D 5 may be electrically connected to voltage V-OUT.
- a third pin of integrated chip HT7536-1 may be electrically connected to +3.6 v voltage source, and a terminal of capacitor C 5 . Another terminal of capacitor C 5 may be connected to the Ground. A first pin of integrated chip HT7536-1 may also be connected to the Ground.
- a first pin of integrated chip JP 1 may be electrically connected to +5V voltage source.
- a second pin of integrated chip JP 2 may be electrically connected to signal SWIM and signal U 4 - 26 .
- a third pin of integrated chip JP 3 may be connected to the Ground.
- a terminal of resistor R 2 may be electrically connected to +5V voltage source.
- Another terminal of resistor R 2 may be electrically connected to a fourth pin of integrated chip JP 1 , a terminal of capacitor C 1 , and signal RST and signal U 4 - 1 .
- Another terminal of capacitor C 1 may be connected to the Ground.
- a fifth pin of integrated chip JP 1 may be electrically connected to signal T and a terminal of resistor R 21 .
- resistor R 21 may be electrically connected to signal U 4 - 30 .
- a sixth pin of integrated chip JP 1 may be electrically connected to signal R and a terminal of resistor R 11 .
- Another terminal of resistor R 11 may be electrically connected to signal U 4 - 31 .
- a first pin of integrated chip P 1 may be electrically connected to signal U 4 - 18 .
- a second pin of integrated chip P 1 may be electrically connected to signal U 4 - 19 .
- a third pin of integrated chip P 1 may be electrically connected to signal U 4 - 20 .
- a fourth pin of integrated chip P 1 may be electrically connected to signal U 4 - 21 .
- a fifth pin of integrated chip P 1 may be electrically connected to signal U 4 - 22 .
- a sixth pin of integrated chip P 1 may be electrically connected to signal U 4 - 23 .
- a seventh pin of integrated chip P 1 may be electrically connected to signal U 4 - 24 .
- An eighth pin of integrated chip P 1 may be electrically connected to signal U 4 - 2 .
- a ninth pin of integrated chip P 1 may be electrically connected to signal U 4 - 3 .
- a tenth pin of integrated chip P 1 may be electrically connected to signal U 4 - 7 , a third pin of a parallel connected resistors group RP 2 , and a fourth pin of a parallel connected resistors group RP 2 .
- An eleventh pin of integrated chip P 1 may be electrically connected to signal U 4 - 8 , a first pin of a parallel connected resistors group RP 2 , and a second pin of a parallel connected resistors group RP 2 .
- a twelfth pin of integrated chip P 1 may be electrically connected to signal U 4 - 9 , a third pin of a parallel connected resistors group RP 1 , and a fourth pin of a parallel connected resistors group RP 1 .
- a thirteenth pin of integrated chip P 1 may be electrically connected to signal U 4 - 10 , a first pin of a parallel connected resistors group RP 1 , and a second pin of a parallel connected resistors group RP 1 .
- a fifth pin, an eighth pin of the parallel connected resistors group RP 1 and a fifth pin and an eighth pin of the parallel connected resistors group RP 2 are connected to the Ground.
- a sixth pin and a seventh pin of the parallel connected resistors group RP 1 , and a sixth pin and a seventh pin of the parallel connected resistors group RP 2 may be electrically connected to +5V voltage source.
- a first pin of integrated chip U 4 may be electrically connected to signal U 4 - 1 .
- a second pin of integrated chip U 4 may be electrically connected to signal U 4 - 2 .
- a third pin of integrated chip U 4 may be electrically connected to signal U 4 - 3 .
- a fourth pin of integrated chip U 4 may be connected to the Ground.
- a fifth pin of integrated chip U 4 may be electrically connected to a terminal of capacitor C 17 , while another terminal of capacitor C 17 may be connected to the Ground.
- a sixth pin of integrated chip U 4 may be electrically connected to +5V voltage source.
- a seventh pin of integrated chip U 4 may be electrically connected signal U 4 - 7 .
- An eighth pin of integrated chip U 4 may be electrically connected signal U 4 - 8 .
- a ninth pin of integrated chip U 4 may be electrically connected signal U 4 - 9 .
- a tenth pin of integrated chip U 4 may be electrically connected signal U 4 - 10 .
- An eleventh pin and a twelfth pin of integrated chip U 4 are not connected.
- a thirteenth pin of integrated chip U 4 may be electrically connected to a terminal of resistor R 41 , a terminal of resistor R 39 , and a terminal of capacitor C 13 .
- Another terminal of resistor R 41 may be electrically connected to power source VA.
- a terminal of resistor R 39 and another terminal of capacitor C 13 may be connected to the Ground.
- a fourteenth pin of integrated chip U 4 may be electrically connected to a terminal of capacitor C 5 , a terminal of resistor R 19 , and a terminal of variable resistor RT 2 . Another terminal of resistor R 19 may be electrically connected to +5V voltage source. Another terminal of capacitor C 5 and another terminal of variable resistor RT 2 may be connected to the Ground.
- a fifteenth pin of integrated chip U 4 may be electrically connected to signal U 4 - 15 .
- a sixteenth pin of integrated chip U 4 may be electrically connected to signal U 4 - 16 .
- a seventeenth pin of integrated chip U 4 may be electrically connected to a terminal of resistor R 8 and a terminal of switch K 3 . Another terminal of resistor R 8 may be electrically connected to +5V voltage source.
- An eighteenth pin of integrated chip U 4 may be electrically connected to signal U 4 - 18 .
- a nineteenth pin of integrated chip U 4 may be electrically connected to signal U 4 - 19 .
- a twentieth pin of integrated chip U 4 may be electrically connected to signal U 4 - 20 .
- a twenty first pin of integrated chip U 4 may be electrically connected to signal U 4 - 21 .
- a twenty second pin of integrated chip U 4 may be electrically connected to signal U 4 - 22 .
- a twenty third pin of integrated chip U 4 may be electrically connected to signal U 4 - 23 .
- a twenty fourth pin of integrated chip U 4 may be electrically connected to signal U 4 - 24 .
- a twenty fifth pin of integrated chip U 4 may be electrically connected to a terminal of resistor R 30 .
- resistor R 30 may be electrically connected to +5V voltage source.
- a twenty sixth pin of integrated chip U 4 may be electrically connected to a signal U 4 - 26 .
- a twenty seventh pin of integrated chip U 4 may be electrically connected to a signal U 4 - 27 .
- a twenty eighth pin of integrated chip U 4 may be electrically connected to a terminal of resistor R 49 and a terminal of switch K 1 .
- Another terminal of resistor R 29 may be electrically connected to +5V voltage source.
- a twenty ninth pin of integrated chip U 4 may be electrically connected to a terminal of resistor R 62 and a terminal of switch K 2 .
- Another terminal of resistor R 62 may be electrically connected to +5V voltage source.
- a thirtieth pin of integrated chip U 4 may be electrically connected to signal U 4 - 30 .
- a thirtieth first pin of integrated chip U 4 may be electrically connected to signal U 4 - 31 .
- a thirtieth second pin of integrated chip U 4 may be electrically connected to signal U 4 - 32 .
- a terminal of resistor R 46 may be electrically connected to signal U 4 - 16 , a terminal of resistor C 12 , and a terminal of resistor R 40 . Another terminal of resistor R 46 and another terminal of capacitor C 12 may be connected to the Ground. Another terminal of resistor R 40 may be electrically connected to an output of operational amplifier U 2 B and a terminal of resistor R 33 . Another terminal of resistor R 33 may be electrically connected to an inverting input of operational amplifier U 2 B and a terminal of resistor R 29 . Another terminal of resistor R 29 may be connected to the Ground.
- a non-inverting input of operational amplifier U 2 B may be electrically connected to a positive terminal of diode D 4 , a terminal of capacitor C 10 , a terminal of resistor R 22 , and a terminal of resistor R 27 .
- a negative terminal of diode D 4 , another terminal of capacitor C 10 , another terminal of resistor R 22 , and another terminal of resistor R 27 may be connected to the Ground.
- a terminal of resistor R 37 may be electrically connected to signal U 4 - 32 and a terminal of resistor R 34 .
- Another terminal of resistor R 37 may be electrically connected to voltage source VB.
- Another terminal of resistor R 34 may be electrically connected to a base terminal of transistor Q 7 .
- a collector terminal of transistor Q 7 may be electrically connected to a terminal of resistor R 42 , and Gate terminal of MOSFET UA 3 . Another terminal of resistor R 42 may be electrically connected to voltage source VB. A drain terminal of MOSFET UA 3 may be connected to the Ground. A source terminal of MOSFET UA 3 and an emitter terminal of transistor Q 7 may be connected to the Ground. A positive terminal of diode D 1 may be electrically connected to voltage source VA. A negative terminal of diode D 1 may be electrically connected to a terminal of resistor R 1 , a terminal of resistor R 3 , and a collector terminal of transistor Q 1 .
- resistor R 1 Another terminal of resistor R 1 may be electrically connected to another terminal of resistor R 3 , a base terminal of transistor Q 1 and a negative terminal of Zener diode ZD 1 .
- a positive terminal of Zener diode ZD 1 may be connected to the Ground.
- An emitter terminal of transistor Q 1 may be electrically connected to a positive terminal of electrolytic capacitor C 4 , a terminal of capacitor C 11 , a voltage source VB, a terminal of resistor R 12 , and a collector terminal of transistor Q 5 .
- a negative terminal of electrolytic capacitor C 4 and another terminal of capacitor C 11 may be connected to the Ground.
- resistor R 12 may be electrically connected to a base terminal of transistor Q 5 , a negative terminal of Zener diode U 1 , a terminal of resistor R 15 , and a terminal of resistor R 16 .
- a positive terminal of Zener diode U 1 and another terminal of resistor R 16 may be connected to the Ground.
- Another terminal of resistor R 15 may be electrically connected to an emitter terminal of transistor Q 5 , a positive terminal of electrolytic capacitor C 6 , a terminal of capacitor C 7 , a terminal of capacitor C 8 , and a +5V voltage source.
- a negative terminal of electrolytic capacitor C 6 , another terminal of capacitor C 7 , and another terminal of capacitor C 8 may be connected to the Ground.
- a positive terminal of diode D 5 may be electrically connected to voltage source VA and voltage source TP 1 .
- a negative terminal of diode D 5 may be electrically connected to a positive terminal of electrolytic capacitor C 2 , a positive terminal of electrolytic capacitor C 3 , and a first pin of integrated chip U 3 .
- a fourth pin of integrated chip U 3 may be disconnected.
- a second pin of integrated chip U 3 may be electrically connected to a terminal of inductor L 1 and a negative terminal of diode D 6 .
- Another terminal of inductor L 1 may be electrically connected to a third pin of integrated chip U 3 , a positive terminal of electrolytic capacitor C 14 , a terminal of resistor R 55 , a terminal of resistor R 53 , a first pin of integrated chip USB, an eighth pin of integrated chip USB, and voltage source USB_+5V.
- Another terminal of resistor R 55 may be electrically connected to a terminal of resistor R 56 , a second pin of integrated chip USB and a seventh pin of integrated chip USB.
- Another terminal of resistor R 53 may be electrically connected to a terminal of resistor R 52 , a third pin of integrated chip USB and a sixth pin of integrated chip USB.
- a terminal of resistor R 28 may be electrically connected to signal U 4 - 15 .
- Another terminal of resistor R 28 may be electrically connected to a terminal of resistor R 26 , a terminal of resistor R 25 , a terminal of capacitor C 9 , and a terminal of resistor R 23 .
- Another terminal of resistor R 26 may be electrically connected to +5V voltage source.
- Another terminal of resistor R 25 and another terminal of capacitor C 9 may be connected to the Ground.
- resistor R 23 may be electrically connected to a terminal of resistor R 9 , a terminal of resistor R 47 , a collector terminal of transistor Q 3 , a terminal of variable resistor MOV 1 , a positive terminal of Zener diode ZD 2 , a terminal of resistor R 4 , a Source terminal of MOSFET UA 1 , and a second pin of integrated chip COM 1 .
- resistor R 9 may be electrically connected to a terminal of resistor R 7 , a terminal of resistor R 13 , a positive terminal of diode D 3 , and a base terminal of transistor Q 3 .
- a negative terminal of diode D 3 may be electrically connected to an emitter terminal of transistor Q 3 , a negative terminal of Zener diode ZD 2 , and a gate terminal of MOSFET UA 1 .
- Another terminal of resistor R 7 may be electrically connected to another terminal of resistor R 13 and a collector terminal of transistor Q 2 .
- a positive terminal of diode D 2 may be electrically connected to voltage source VA.
- a negative terminal of diode D 2 may be electrically connected to an emitter terminal of transistor Q 2 and a terminal of resistor R 10 .
- Another terminal of resistor R 10 may be electrically connected to a terminal of resistor R 14 and a base terminal of resistor Q 2 .
- resistor R 14 may be electrically connected to a collector terminal of transistor Q 4 .
- a gate terminal of transistor Q 4 may be electrically connected to a terminal of resistor R 17 and a terminal of resistor R 18 .
- Another terminal of resistor R 18 may be electrically connected to signal U 4 - 27 .
- Another terminal of resistor R 17 and an emitter terminal of transistor Q 4 may be connected to the Ground.
- a first pin of integrated chip COM 1 , a third pin of integrated chip COM 1 , and a fifth pin of integrated chip COM 1 may be electrically connected to voltage source VA.
- a fourth pin of integrated chip COM 1 and a sixth pin of integrated chip COM 1 may be connected to the Ground.
- a drain terminal of MOSFET UA 1 may be electrically connected to a drain terminal of MOSFET UA 2 .
- a source terminal of MOSFET UA 2 and a terminal of resistor R 24 may be connected to the Ground.
- a gate terminal of MOSFET UA 2 may be electrically connected to another terminal of resistor R 24 , and a terminal of resistor R 20 .
- Another terminal of resistor R 20 may be electrically connected to an output of operational amplifier U 2 A.
- a positive power input of the operational amplifier U 2 A may be electrically connected to voltage source VB.
- a negative power input of operational amplifier U 2 A may be connected to the Ground.
- An inverting input of operational amplifier U 2 A may be electrically connected to another terminal of resistor R 47 , a terminal of resistor R 44 , and a terminal of resistor R 45 .
- Another terminal of resistor R 44 may be electrically connected to +5V voltage source.
- Another terminal of resistor R 45 may be connected to the Ground.
- a non-inverting input of operational amplifier U 2 A may be electrically connected to a terminal of resistor R 38 and a terminal of resistor R 35 .
- Another terminal of resistor R 38 may be electrically connected to +5V voltage source.
- Another terminal of resistor R 35 may be electrically connected to a terminal of resistor R 36 .
- Another terminal of resistor R 36 may be connected to the Ground.
- the charging control module 51 may be arranged to control and manage charging of the rechargeable battery pack 40 .
- the integrated chip HT7536-1, integrated chip U 3 , integrated chip U 4 and integrated chip U 7 may be configured to discharge and charge the rechargeable battery pack 40 by using 6 A current.
- the integrated chip HT7536-1, integrated chip U 3 , integrated chip U 4 and integrated chip U 7 may also be configured to protect overcharging, over-discharging or prevent short circuit of the rechargeable battery pack 40 .
- the integrated chip HT7536-1, integrated chip U 3 , integrated chip U 4 and integrated chip U 7 may also be configured to protect the battery of the vehicle when the present invention is electrically connected to the vehicle's rechargeable battery.
- the solar charging module 52 may be configured to control and manage charging of the solar battery 62 by employing maximum voltage of 55V and charging current of 10 A.
- Integrated chip JP 1 , integrated chip P 1 , integrated chip U 4 , integrated chip U 3 , integrated chip USB and integrated chip COM 1 may be configured and programed to manage Pulse Width Modulation (PMW) charging cycles.
- PMW Pulse Width Modulation
- Zener diode ZD 1 , Zener diode ZD 2 , Zener diode U 1 , transistor Q 1 , transistor Q 2 , transistor Q 3 , transistor Q 4 , transistor Q 5 and transistor Q 7 may be utilized to prevent current overflow and short circuit so as to accomplish open circuit protection and reverse protection.
- MOSFET UA 1 , MOSEFT UA 2 , MOSFET UA 3 , resistors group RP 1 and resistors group RP 2 may be utilized to create a backflow prevention circuit.
- the energy management module 53 may be configured to allocate the optimal voltage to the compressor 32 .
- the central control unit 50 may be configured to accomplish uninterruptible power supply (UPS) so that it provides near-instantaneous protection from input power interruptions to the compressor 32 and other components of the cooling mechanism 30 .
- the preferred mode of power supply is through an external DC power input.
- An adapter may be utilized to convert an external AC power supply into a DC power supply.
- the central control unit 50 may first allocate the power from the external DC power supply to operate the compressor 32 and other components of the portable refrigerator.
- the central control unit 50 may be configured to allocate an optimal amount of power to recharge the rechargeable battery pack 40 and at the same time to keep operating the compressor 32 .
- the charging control module 51 , the solar charging module 52 and the energy management module 53 may allocate an optimal amount of electrical power to the cooling mechanism 30 and the rechargeable battery pack 40 .
- the cooling mechanism 30 may have a priority in allocation of electrical power.
- the central control unit 50 may command charging of the rechargeable battery pack 40 .
- the portable refrigerator may also be powered by connecting it to an external power supply, such as an external DC power supply typically found in a vehicle, or the solar panel 62 .
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- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
A portable refrigerator includes a main housing, a refrigerator cover, a cooling mechanism, a rechargeable battery pack and a control unit. The cooling mechanism includes heat exchanging tubes, a compressor, an evaporator and a condenser connected to the evaporator and the compressor. The rechargeable battery pack is detachably attached on a power compartment of the main housing. The control unit is supported in the main housing and electrically connected to the rechargeable battery pack and the cooling mechanism for centrally controlling an operation of the cooling mechanism. A to predetermined amount of refrigerant is arranged to controllably pass through the heat exchanging tubes, the condenser, the evaporator and the compressor for extracting heat from the accommodating cavity.
Description
- This is a divisional application of a non-provisional application having an application Ser. No. 16/447,623, and a filing date of Jun. 20, 2019, the entire contents of which is hereby incorporated by reference.
- The present invention relates to a refrigerator, and more particularly to a portable refrigerator comprising a rechargeable battery pack which many be detachable from a main housing and may be recharged through a conventional AC power source, a detachable solar panel, a car power output, and any DC power supply.
- Portable refrigerators have widely been utilized around the world. A conventional portable refrigerator may utilize a compressor for actuating heat exchange between a storage compartment and ambient environment.
- A major disadvantage of conventional portable refrigerators relates to acquiring power for maintaining heat exchange processes which take place in various components of the portable refrigerators. Conventionally, a majority of portable refrigerators is electrically connected to a power port provided in a car. An obvious problem for this arrangement is that when the portable refrigerator is operating, the car must also be started to allow continuous supply of electrical power from the power port of the car.
- Some conventional portable refrigerators utilize solar panels to collect solar energy and store the solar energy in a rechargeable battery embedded in the corresponding portable refrigerator. A problem with this type of portable refrigerators is that the rechargeable batteries cannot be taken out from the refrigerators. Moreover, the rechargeable batteries may or may not be charged by other means, such as connecting the portable refrigerators to a wall power supply. Even if the portable refrigerator can be connected to a wall power supply, it would be very inconvenience for a user to do so.
- Certain variations of the present invention provide a portable refrigerator comprising a rechargeable battery pack which many be detachable from a main housing and may be recharged through a conventional AC power source or by a detachable solar panel.
- Certain variations of the present invention provide a portable refrigerator in which various components of the portable refrigerator can be centrally controlled by a central control unit.
- Certain variations of the present invention provide a portable refrigerator in which the central control unit is arranged to utilize uninterruptible power supply (UPS) so that it provides near-instantaneous protection from input power interruptions to the compressor and other components of a cooling mechanism.
- In one aspect of the present invention, it provides a portable refrigerator, comprising:
- a main housing having an accommodating cavity for storing at least one item, and a power compartment;
- a refrigerator cover provided on the main housing for selectively closing the accommodating cavity;
- a cooling mechanism which is supported by the main housing and comprises a plurality of heat exchanging tubes, a compressor, an evaporator connected to the compressor through at least one of the heat exchanging tubes, and a condenser connected to the evaporator and the compressor through at least one of the heat exchanging tubes;
- a rechargeable battery pack detachably attached on the power compartment of the main housing, the rechargeable battery being adapted for connecting to a power source; and
- a central control unit supported in the main housing and electrically connected to the rechargeable battery pack and the cooling mechanism for centrally controlling an operation of the cooling mechanism, wherein a predetermined amount of refrigerant is arranged to controllably pass through the heat exchanging tubes, the condenser, the evaporator and the compressor for extracting heat from the accommodating cavity.
- This summary presented above is provided merely to introduce certain concepts and not to identify any key or essential features of the claimed subject matter.
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FIG. 1 is a front perspective view of a portable refrigerator according to a preferred embodiment of the present invention. -
FIG. 2 is a rear perspective view of the portable refrigerator according to the preferred embodiment of the present invention. -
FIG. 3 is a schematic diagram of the portable refrigerator according to the preferred embodiment of the present invention. -
FIG. 4 is an exploded perspective view of the portable refrigerator according to the preferred embodiment of the present invention. -
FIG. 5 is a schematic diagram of a bottom wall of a main housing of the portable refrigerator according to the preferred embodiment of the present invention. -
FIG. 6 is a schematic diagram of the portable refrigerator according to the preferred embodiment of the present invention, illustrating connection between a refrigerator cover and a main housing. -
FIG. 7 is a perspective view of the refrigerator cover according to the preferred embodiment of the present invention. -
FIG. 8 is another perspective view of the refrigerator cover according to the preferred embodiment of the present invention. -
FIG. 9 is a perspective view of a power compartment of the portable refrigerator according to the preferred embodiment of the present invention, illustrating a bottom portion of the power compartment. -
FIG. 10 is a perspective view of the power compartment of the portable refrigerator according to the preferred embodiment of the present invention, illustrating a lower portion of the power compartment. -
FIG. 11 is a front view of the power compartment of the portable refrigerator according to the preferred embodiment of the present invention. -
FIG. 12 is an exploded perspective view of the rechargeable battery pack of the portable refrigerator according to the preferred embodiment of the present invention. -
FIG. 13 is a perspective view of the actuating member of the portable refrigerator according to the preferred embodiment of the present invention. -
FIG. 14 is a schematic diagram of the rechargeable battery pack of the portable refrigerator according to the preferred embodiment of the present invention. -
FIG. 15 is a block diagram of a central control unit and cooling mechanism of the portable refrigerator according to the preferred embodiment of the present invention. -
FIG. 16 is a top perspective view of the rechargeable battery pack of the portable refrigerator according to the preferred embodiment of the present invention. -
FIG. 17 is a bottom perspective view of the rechargeable battery pack of the portable refrigerator according to the preferred embodiment of the present invention. -
FIG. 18 is a block diagram of a central control unit of the portable refrigerator according to the preferred embodiment of the present invention. -
FIG. 19A toFIG. 19E are circuit diagrams of a charging control module of a central control unit of the portable refrigerator according to the preferred embodiment of the present invention. -
FIG. 20A toFIG. 20H are circuit diagrams of a solar charging module of a central control unit of the portable refrigerator according to the preferred embodiment of the present invention. - The following detailed description of the preferred embodiment is the preferred mode of carrying out the invention. The description is not to be taken in any limiting sense. It is presented for the purpose of illustrating the general principles of the present invention.
- Referring to
FIGS. 1 to 18 ,FIG. 19A toFIG. 19E andFIG. 20A toFIG. 20H of the drawings, a portable refrigerator according to a preferred embodiment of the present invention is illustrated. Broadly, the portable refrigerator may comprise amain housing 10, arefrigerator cover 20, acooling mechanism 30, arechargeable battery pack 40, and acentral control unit 50. - The
main housing 10 has anaccommodating cavity 11 for storing at least one item, and apower compartment 12. Therefrigerator cover 20 may be provided on themain housing 10 for selectively closing theaccommodating cavity 11. - The
cooling mechanism 30 may be supported by themain housing 10 and comprises a plurality ofheat exchanging tubes 31, acompressor 32, anevaporator 33 connected to thecompressor 32 through at least one of theheat exchanging tubes 31, and acondenser 34 connected to theevaporator 33 and thecompressor 32 through at least one of theheat exchanging tubes 31. - The
rechargeable battery pack 40 may be detachably attached on thepower compartment 12 of themain housing 10. Moreover, the rechargeable battery pack may be adapted for connecting to a power source. - The
central control unit 50 may be supported in themain housing 10 and electrically connected to therechargeable battery pack 40 and thecooling mechanism 30 for centrally controlling an operation of thecooling mechanism 30, wherein a predetermined amount of refrigerant is arranged to controllably pass through theheat exchanging tubes 31, thecondenser 34, theevaporator 33 and thecompressor 31 for extracting heat from theaccommodating cavity 11. - According to the preferred embodiment of the present invention, the portable refrigerator may be utilized in outdoor environment as a self-contained unit. The
main housing 10 may comprise afront wall 141, arear wall 142, and twoside walls 143, wherein theaccommodating cavity 11 may be formed as a space between a space surrounded by thefront wall 141, therear wall 142 and theside walls 143. Themain housing 10 may further have an access opening 17 formed on a top side thereof as a top opening of theaccommodating cavity 11. Thus, theaccommodating cavity 11 may communicate with an exterior of themain housing 10 through theaccess opening 17. - The
main housing 10 may further comprise a first sideperipheral rim 103, a second sideperipheral rim 104 and a rearperipheral rim 105 upwardly extended from an outer surface of the twoside walls 143 and therear wall 142 respectively for connecting to the refrigerator cover 20 (described in more details below). Theaccess opening 17 may therefore be formed at a position below the first sideperipheral rim 103, the second sideperipheral rim 104 and the rearperipheral rim 105. Moreover, acover seat 106 may be formed as the space on top of the twoside walls 143, therear wall 142 and thefront wall 141 and surrounded by the first sideperipheral rim 103, the second sideperipheral rim 104 and the rearperipheral rim 105. - The
main housing 10 may further have acomponents compartment 13 formed adjacent to theaccommodating cavity 11 for storing various mechanical and electrical components of the portable refrigerator. - The
main housing 10 may further comprise a plurality ofwheels 15 rotatably provided on twoside walls 143 respectively for facilitating easy transportation of the portable refrigerator. Moreover, themain housing 10 may further comprise aretractable handle 16 provided on therear wall 142 so that a user may utilize theretractable handle 16 to carry the portable refrigerator. Themain housing 10 may further comprise a plurality of hangingmembers 14 formed on therear wall 142 for allowing an external objects to be hung thereon. Furthermore, themain housing 10 may further comprise an anchoringmember 140 formed on abottom wall 144 of themain housing 10 so that a user may tie an external object on the main housing by using the anchoringmember 140. - The
refrigerator cover 20 may be detachably attached on themain housing 10 to selectively close theaccess opening 17. Specifically, therefrigerator cover 20 may comprise acover body 21 having atop surface 211, abottom surface 212, afirst side surface 213 and asecond side surface 214. Thecover body 21 may have a plurality of (but at least one)indentions 215 formed on thetop surface 211 for holding cups or other beverage containers. In this preferred embodiment, there may be threeindentions 215, two of which may have a circular cross section when viewed from the top while the remainingindention 215 may have a rectangular cross section also when viewed from the top. - Moreover, the
refrigerator cover 20 may further comprise africtional member 22 provided on one of theindentions 215 of thecover body 21, wherein thefrictional member 22 may be configured to have a greater frictional force than other parts of therefrigerator cover 20 so that when external items, such as tablet computers, are disposed on thefrictional member 22, the external items may be retained on thefrictional member 22. - The
refrigerator cover 20 may further comprise a first connectingmember 23 and the second connectingmember 24 extended from thefirst side surface 213 and thesecond side surface 214 of thecover body 21 respectively for pivotally and detachably connecting to themain housing 10. Specifically, the first connectingmember 23 may be outwardly extended from thefirst side surface 213 and may be configured as having a cylindrical shape (i.e. circular cross-sectional shape) for pivotally connecting to themain housing 10. On the other hand, the second connectingmember 24 may have a quadrilateral or rectangular cross-sectional shape and may be outwardly extended from thesecond side surface 214. - Referring to
FIG. 4 andFIG. 6 of the drawings, themain housing 10 may further has a firstpivotal slot 101 and a secondpivotal slot 102 formed on the first sideperipheral rim 103 and the second sideperipheral rim 104 respectively, wherein the first connectingmember 23 and the second connectingmember 24 may be arranged to pivotally and detachably connect to the firstpivotal slot 101 and the secondpivotal slot 102 respectively. - The first
pivotal slot 101 may be shaped and sized to correspond to a cross sectional shape of the first connectingmember 23 so that when the first connectingmember 23 is inserted into the firstpivotal slot 101, the first connectingmember 23 may freely rotate about a longitudinal axis of the firstpivotal slot 101. Thus, when the first connectingmember 23 is configured as having a cylindrical cross section, the firstpivotal slot 101 may also be configured as such. - On the other hand, the second
pivotal slot 102 may be inclinedly extended from a top surface of the second sideperipheral rim 104 so as to form atop opening 1041 on the second sideperipheral rim 104 as the top end of the secondpivotal slot 102. The secondpivotal slot 102 may downwardly and inclinedly extend from thetop opening 1041 along aninner side surface 1042 of the second sideperipheral rim 104. The secondpivotal slot 102 may have anenlarged portion 1021 and a contractedextension portion 1022 extended between theenlarged portion 1021 and thetop opening 1041, wherein the second connectingmember 24 may be arranged pivotally move in theenlarged portion 1021 and to slide along thecontraction extension portion 1022 only when the second connectingmember 24 aligns with the contractedextension portion 1022. - As shown in
FIG. 6 of the drawings, when the second connectingmember 24 is inserted into theenlarged portion 1021 of the secondpivotal slot 102, the second connectingmember 24 may rotate about a longitudinal axis of theenlarged portion 1021 of the secondpivotal slot 102. Since a width of the contractedextension portion 1022 is smaller than that of theenlarged portion 1021, when the second connectingmember 24 is in theenlarged portion 1021, the second connectingmember 24 may normally be prevented from sliding along the contractedextension portion 1022. However, when the second connectingmember 24 is in theenlarged portion 1021 and aligns with the contractedextension portion 1022, the second connectingmember 24 may slide along the contractedextension portion 1022 and detach from the second sideperipheral rim 104 through thetop opening 1041. - This arrangement ensures that the
refrigerator cover 20 may only detach from themain housing 10 when therefrigerator cover 20 is pivotally moved to a predetermined angle of inclination with respect to themain housing 10. This angle of inclination is the angle of inclination of the contractedextension portion 1022 forming on the second sideperipheral rim 104. - The
cooling mechanism 30 may comprise thecompressor 32, theevaporator 33 and thecondenser 34. They may be connected by theheat exchanging tubes 31. Thecompressor 32 and thecondenser 34 may be positioned in thecomponents compartment 13 of themain housing 10. A predetermined amount of refrigerant may flow through theheat exchanging tubes 31 for performing heat exchange with another physical medium so as to extract heat from theaccommodating cavity 11. - The
cooling mechanism 30 may further comprise afan 35 provided in thecomponents compartment 13 while themain housing 10 may further have a plurality of ventilatingslots 18 which communicate thecomponents compartment 13 with an exterior of themain housing 10. As such, thefan 35 may be driven to draw air into thecomponents compartment 13 through the ventilatingslots 18. Ambient air having lower temperature may be used to cool down the refrigerant which flows through thecondenser 34 and carries heat from theaccommodating cavity 11. Thefan 35 may be mounted adjacent to thecondenser 34 for effectively remove heat from the refrigerant flowing through thecondenser 34. Thefan 35 may also be electrically connected to thecentral control unit 50 so that it may also be centrally connected by the central control unit. - Referring to
FIG. 3 ,FIG. 12 andFIG. 14 of the drawings, therechargeable battery pack 40 may comprise abattery housing 41 and abattery core 42 received in thebattery housing 41 for storing electric power. Thebattery housing 41 may have afront battery surface 411, arear battery surface 412, two side battery surfaces 413, atop battery surface 414 and abottom battery surface 415. Thebattery housing 41 may be configured to resemble a largely rectangular cross-sectional shape when viewed from the front. Thebattery housing 41 may be fittedly and detachably accommodated in thepower compartment 12 of themain housing 10. - Referring to
FIG. 3 andFIG. 12 toFIG. 13 of the drawings, therechargeable battery pack 40 may further comprise a lockingarrangement 43 operatively provided on thebattery housing 41 for allowing thebattery housing 41 to be selectively locked or detached from thepower compartment 12. Specifically, the lockingarrangement 43 may comprise afirst actuating member 431, asecond actuating member 432 and a plurality ofresilient element 433 mounted on thefirst actuating member 431 and thesecond actuating member 432 to normally exert a biasing force thereto. - On the other hand, the locking
arrangement 43 may further contain a plurality of through passage holes 435 formed on thebattery housing 41, wherein parts of thefirst actuating member 431 and thesecond actuating member 432 may selectively pass through the corresponding through passage holes 435 (described below). - The
first actuating member 431 has afirst locking latch 4311, asecond locking latch 4312, and a firstdepressing member 4313 positioned between thefirst locking latch 4311 and thesecond locking latch 4312. Thefirst actuating member 431 may be mounted in thebattery housing 41 such that thefirst locking latch 4311, thesecond locking latch 4312 and the firstdepressing member 4313 may align with three of the corresponding through passage holes 435 respectively. At least one of theresilient elements 433 may normally exert a biasing force against thefirst actuating member 431 so as to drive thefirst locking latch 4311, thesecond locking latch 4312 and the firstdepressing member 4313 to normally expose out of thebattery housing 41 through the corresponding through passage holes 435. - Similarly, the
second actuating member 432 has athird locking latch 4321, afourth locking latch 4322, and a seconddepressing member 4323 positioned between thethird locking latch 4321 and thefourth locking latch 4322. Thesecond actuating member 432 may be mounted in thebattery housing 41 such that thethird locking latch 4321, thefourth locking latch 4322 and the seconddepressing member 4323 may align with another three of the corresponding through passage holes 435 respectively. At least one of theresilient elements 433 may normally exert a biasing force against thesecond actuating member 432 so as to drive thethird locking latch 4321, thefourth locking latch 4322 and the seconddepressing member 4323 to normally expose out of thebattery housing 41 through the corresponding through passage holes 435. - It is worth mentioning that the
first actuating member 431 may be provided on an upper portion of thebattery housing 41 while thesecond actuating member 432 may be provided on a lower portion of thesame battery housing 41. Accordingly, two of the through passage holes 435 may be provided on thetop battery surface 414, and another two of the through passage holes 435 may be provided on thebottom battery surface 415 of thebattery housing 41. - As shown in
FIG. 16 toFIG. 17 of the drawings, thebattery housing 41 may further have afirst battery indention 416 indently formed on thefront battery surface 411 and thetop battery surface 414. Similarly, thebattery housing 41 may further have asecond battery indention 417 indently formed on thefront battery surface 411 and thebottom battery surface 415 wherein two of the through passage holes 435 may be formed on thefirst indention surface 4161 of thefirst battery indention 416 and asecond indention surface 4171 of thesecond battery indention 417 respectively. The firstdepressing member 4313 and the seconddepressing member 4323 may be pushed to expose out of thebattery housing 41 through the through passage holes 435 formed on theinner surfaces 4161 of thebattery indentions 416 respectively. - As shown in
FIG. 1 toFIG. 2 andFIG. 6 toFIG. 8 of the drawings, thefirst battery indention 416 may be formed at a position between thefirst locking latch 4311 and thesecond locking latch 4312, and thesecond battery indention 417 may be formed at a position between thethird locking latch 4321 and thefourth locking latch 4322. Thefirst indention surface 4161 may be substantially parallel to thetop battery surface 414, while thesecond indention surface 4171 may be substantially parallel to thebottom battery surface 415. - The
battery housing 41 may be divided into a frontthicker portion 418 and a rearthinner portion 419 so that a vertical height of the frontthicker portion 418 is greater than that of the rearthinner portion 419. As such, thebottom battery surface 415 of thebattery housing 41 may be divided into afront section 4151 and arear section 4152, wherein thefront section 4151 may be formed as the bottom surface of the frontthicker portion 418 of thebattery housing 41, while therear section 4152 may be formed as the bottom surface of the rearthinner portion 419. Thesecond battery indention 417, thethird locking latch 4321 and thefourth locking latch 4322 may be provided on thefront section 4151 of thebottom battery surface 415. A biasingsurface 4153 may be formed as the boundary surface between thefront section 4151 and therear section 4152. Thisbiasing surface 4153 may be parallel to thefront battery surface 411 and therear battery surface 412. - The
battery housing 41 may further have a plurality of securingslots 410 formed on thetop battery surface 414 andrear section 4152 of thebottom battery surface 415 respectively. These securingslots 410 may be formed on the rearthinner portion 419 of thebattery housing 41. - Moreover, the
rechargeable battery pack 40 may further comprise aconnection port 44 provided on thebottom battery surface 415 of thebattery housing 41. Theconnection port 44 may be electrically connected to thebattery core 42 so that it may be used as a power outlet for therechargeable battery pack 40. In this preferred embodiment of the present invention, theconnection port 44 may be provided on thefront section 4151 of thebottom battery surface 415 and thebiasing surface 4153. - The
battery housing 41 may further have a plurality of positioning recesses 401 provided on thebottom battery surface 415 for further assisting positioning of thebattery housing 41 in thepower compartment 12. Each of the positioning recesses 401 may extend on thefront section 4151 and thebiasing surface 4153 and align with a longitudinal direction of a corresponding securing slot 420. - Referring to
FIG. 3 andFIG. 9 toFIG. 11 of the drawings, thepower compartment 12 may be surrounded by a plurality of surfaces. Specifically, thepower compartment 12 may be surrounded by atop compartment surface 121, abottom compartment surface 122, arear compartment surface 123, and two side compartment surfaces 124. Thepower compartment 12 may therefore be surrounded by thetop compartment surface 121, thebottom compartment surface 122, therear compartment surface 123, and the two side compartment surfaces 124. Moreover, themain housing 10 may further have acompartment opening 125 communicating thepower compartment 12 with an exterior of themain housing 10. Thus, thepower compartment 12 may be defined as a cavity for accommodating therechargeable battery pack 40 and may be surrounded by thetop compartment surface 121, thebottom compartment surface 122, therear compartment surface 123, and the two side compartment surfaces 124. - In order to accommodate the
bottom battery surface 415 of thebattery housing 41, thebottom compartment surface 122 may also be divided into afront segment 1221 and arear segment 1222 wherein a vertical height of thefront segment 1221 and therear segment 1222 with respect to thetop compartment surface 121 may be different. Thefront segment 1221 may be formed at a position lower than that of therear segment 1222. An urgingsurface 1223 may be formed as the boundary surface between thefront segment 1221 and therear segment 1222. This urgingsurface 1223 may be parallel to therear compartment surface 123. - The
main housing 10 may further comprise a plurality of securingridges 1224 formed on thetop compartment surface 121 and therear segment 1222 of thebottom compartment surface 122 at positions corresponding to the securing slots 420 of thebattery housing 41. When therechargeable battery pack 40 is accommodated in thepower compartment 12, the securingridges 1224 may be arranged to engage with the securing slots 420 respectively so as to secure the rechargeable battery back 40 in thepower compartment 12. - Moreover, the
main housing 10 may further comprise a plurality ofpositioning protrusions 1225 formed on thefront segment 1221 of thebottom compartment surface 122 at positions corresponding to the positioning recesses 401 of thebattery housing 41. When therechargeable battery pack 40 is accommodated in thepower compartment 12, thepositioning protrusions 1225 may be arranged to engage with the positioning recesses 401 respectively so as to secure the rechargeable battery back 40 in thepower compartment 12. - The
main housing 10 may further comprise apower inlet 19 formed on the urgingsurface 1223 of thepower compartment 12 for electrically connecting to theconnection port 44 of therechargeable battery pack 40. - The portable refrigerator may further comprise a
solar energy arrangement 60 which may comprise a solar panel 61 detachably attached on themain housing 10 provided in thecomponents compartment 13 and electrically connected to thecentral control unit 50. Themain housing 10 may detachably connect to the solar panel 61 for collecting solar energy. The solar energy collected may be controlled and managed by thecentral control unit 50. The solar energy may be stored in therechargeable battery pack 40. The solar energy may then be converted into electrical energy which may be supplied to various components of the portable refrigerator as controlled by thecentral control unit 50. - Referring to
FIG. 18 of the drawings, thecentral control unit 50 may comprise a chargingcontrol module 51, asolar charging module 52, and anenergy management module 53. In describing thecentral control unit 50 below, references will be made as follows:FIG. 19A toFIG. 19E illustrate the circuit diagram for each of the chargingcontrol module 51 whileFIG. 20A toFIG. 20H illustrate the circuit diagram of thesolar charging module 52. - The charging control module 51 may comprise an integrated chip HT7536-1, an integrated chip U3, an integrated chip U4, an integrated chip U7, a Zener diode ZD1, a diode D5, a diode D6, a diode D7, a diode D8, a light emitting diode LD3, a light emitting diode LD4, a light emitting diode LDS, a light emitting diode LD6, a transistor Q7, a metal-oxide-semiconductor field-effect transistor MOSFET Q1, a MOSFET Q2, a MOSFET Q3, a MOSFET Q4, a MOSFET Q5, a MOSFET Q6, a resistor R1, a resistor R2, a resistor R3, a resistor R5, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a resistor R16, a resistor R17, a resistor R18, a resistor R19, a resistor R20, a resistor R21, a resistor R23, a resistor R24, a resistor R25, a resistor R26, a resistor R27, a resistor R28, a resistor R29, a resistor R30, a resistor R31, a resistor R32, a resistor R34, a resistor R35, a resistor R36, a resistor R37, a resistor R38, a resistor R39, a capacitor C2, a capacitor C3, a capacitor C5, a capacitor C6, a capacitor C8, a capacitor C10, a capacitor C11, a capacitor C12, a capacitor C14, a capacitor C15, a capacitor C16, a capacitor C17, a capacitor C18, a capacitor C19, a capacitor C20, a capacitor C21, a capacitor C22, a capacitor C23, a capacitor C24, a capacitor C25, a capacitor C26, a capacitor C27, a capacitor C28, a capacitor C29, a capacitor C30, a capacitor C31, a capacitor C32, a capacitor C34 and an inductor L1.
- The solar charging module 52 may comprise an integrated chip JP1, an integrated chip P1, an integrated chip U4, the integrated chip U3, an integrated chip USB, an integrated chip COM1, a diode D1, a diode D2, a diode D3, a diode D4, the diode D5, the diode D6, the Zener diode ZD1, a Zener diode ZD2, a Zener diode U1, a transistor Q1, a transistor Q2, a transistor Q3, a transistor Q4, a transistor Q5, a transistor Q7, a MOSFET UA1, a MOSFET UA2, a MOSFET UA3, a resistor group RP1, a resistor group RP2, the inductor L1, a variable resistor RT2, a variable resistor MOV1, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a resistor R8, a resistor R9, a resistor R10, a resistor R11, a resistor R12, a resistor R13, a resistor R14, a resistor R15, a resistor R16, a resistor R17, a resistor R18, a resistor R19, a resistor R20, a resistor R21, a resistor R22, a resistor R23, a resistor R24, a resistor R25, a resistor R26, a resistor R27, a resistor R28, a resistor R29, a resistor R30, a resistor R33, a resistor R34, a resistor R35, a resistor R36, a resistor R37, a resistor R38, a resistor R39, a resistor R40, a resistor R41, a resistor R42, a resistor R44, a resistor R45, a resistor R46, a resistor R47, a resistor R49, a resistor R52, a resistor R53, a resistor R55, a resistor R56, a resistor R62, a capacitor C1, the capacitor C2, the capacitor C3, the capacitor C5, a capacitor C7, a capacitor C8, a capacitor C9, a capacitor C10, a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, a capacitor C17, an electrolytic capacitor C4, an electrolytic capacitor C6, a switch R1, a switch K2, a switch K3, an operational amplifier U2A and an operational amplifier U2B. Each of the above-mentioned resistors and capacitors may have two terminals. Each of the above-mentioned diodes and Zener diodes may have a positive terminal and a negative terminal. Each of the above-mentioned transistors may have a gate terminal, an emitter terminal, and a collector terminal, Each of the above-mentioned MOSFET may have a source terminal, a gate terminal and a drain terminal.
- In the charging
control module 51, one terminal of resistor R8 may be electrically connected to a negative terminal of the Zener diode ZD1, a Gate terminal of MOSFET Q1. Another terminal of the resistor R8 may be electrically connected to a power source VCC, capacitor C10, capacitor C19 and a Drain terminal of MOSFET Q2. - Moreover, a Source terminal of MOSFET Q1, a positive terminal of Zener diode ZD1, a terminal of resistor R1 and a terminal of resistor R9 may be connected to Ground. Another terminal of resistor R1 may be electrically connected to capacitor C10 and another terminal of resistor R9. Resistor R11 may be electrically connected to capacitor C3, resistor R23, and a sixth pin of integrated chip U3. Capacitor C3 and resistor R25 may also be connected to Ground. Resistor C19 may be electrically connected to resistor R13, resistor R26, capacitor C20, and a Gate terminal of MOSFET Q3. Resistor R13 may be electrically connected to a Gate terminal of MOSFET Q2. A Source terminal of MOSFET Q2 may be electrically connected to resistor R27, capacitor C20 and a Source terminal of MOSFET Q3. Resistor R26 may be electrically connected to a fourth pin of integrated chip U3.
- Resistor R27 may be electrically connected to a fourth pin of integrated chip U3. A Drain terminal of MOSFET Q3 may be electrically connected to a terminal of resistor R14, a terminal of resistor R15, a terminal of capacitor C6, a terminal of capacitor C16 and second pin of integrated chip U3. Another terminal of resistor R14 may also be electrically connected to another terminal of resistor R15, another terminal of capacitor C6, a terminal of capacitor C17, a terminal of capacitor C12, a terminal of capacitor C14, a terminal of capacitor C15, a Drain terminal of MOSFET Q4, a Drain terminal of MOSFET Q5, an output J3, and a first pin of integrated chip U3. Another terminal of capacitor C16 and another terminal of capacitor C17 may be connected to the Ground. Furthermore, another terminal of capacitor C12, another terminal of capacitor C14, and another terminal of capacitor C15 may also be connected to Ground.
- Signal ACOK may be electrically connected to a fifth pin of integrated chip U3. Signal IADP may be electrically connected to a terminal of capacitor C31 and a seventh pin of integrated chip U3. Signal IDCHG may be electrically connected to a terminal of capacitor C32 and an eighth pin of integrated chip U3. Another terminal of capacitor C31 and capacitor C32 may be connected to Ground. Signal PMON may be electrically connected to a ninth pin of integrated chip U3. Signal PRO may be electrically connected to a tenth pin of integrated chip U3. Signal SDA may be electrically connected to a terminal of resistor R34 and an eleventh pin of integrated chip U3. Signal SCL may be electrically connected to a terminal of resistor R35 and a twelfth pin of integrated chip U3. Another terminal of resistor R34 and resistor R35 may be connected to +3.6V voltage supply. Signal TB-STAT may be electrically connected to a sixteenth pin of integrated chip U3.
- A positive terminal of diode D7 may be electrically connected to positive voltage supply VCC. A positive terminal of diode D6 may be electrically connected to power supply BAT. A negative terminal of diode D7 may be electrically connected to a negative terminal of diode D6 and a terminal of resistor R20. Another terminal of resistor R20 may be electrically connected to another terminal of capacitor C22, and a twenty eighth pin of integrated chip U3. Another terminal of capacitor C22 may be connected to the Ground. A Source terminal of MOSFET Q4 may be electrically connected to twenty seventh pin of integrated chip U3, a terminal of capacitor C21, a Drain terminal of MOSFET Q6, and a terminal of inductor L1. A Gate terminal of MOSFET Q4 may be electrically connected to a twenty sixth pin of integrated chip U3, another terminal of capacitor C21, and a terminal of resistor R23. Another terminal of resistor R23 may be electrically connected to a twenty fifth pin of integrated chip U3. A terminal of capacitor C23 may be electrically connected to a twenty fourth pin of integrated chip U3. Another terminal of capacitor C23 may be electrically connected to a terminal of resistor R24. A terminal of capacitor C30, and a twenty second pin of integrated chip U3 may be connected to the Ground.
- A Gate terminal of MOSFET Q6 may be electrically connected to a twenty third pin of integrated chip U3 and a terminal of capacitor C27. A Source terminal of MOSFET Q6 and another terminal of capacitor C27 may be connected to the Ground. Another terminal of resistor R24 may be electrically connected to another terminal of capacitor C30, a terminal of resistor R28, and a twenty first pin of integrated chip U3. Another terminal of resistor R28 may be electrically connected to +3.6V voltage supply. A terminal of resistor R29 may be electrically connected to a twentieth pin of integrated chip U3. Another terminal of resistor R29 may be electrically connected to Source terminal of MOSFET Q5, a terminal of capacitor C18, another terminal of inductor L1, a terminal of resistor R5, a terminal of resistor R7, a terminal of capacitor C24, a terminal of capacitor C28, and a terminal of resistor R32.
- Moreover, a terminal of resistor R30 may be electrically connected to a nineteenth pin of integrated chip U3. Another terminal of resistor R30 may be electrically connected to another terminal of resistor R5, another terminal of resistor R7, another terminal of capacitor C24, a terminal of capacitor C29, a terminal of capacitor C25, a terminal of capacitor C26, a positive terminal of power supply BAT, a terminal of resistor R2, a terminal of resistor R3, a third pin of integrated chip U4.
- Another terminal of capacitor C28 may be electrically connected to another terminal of capacitor C29. Another terminal of capacitor C25, another terminal of capacitor C26, a negative terminal of power supply J8, an output terminal of power supply J10 and power supply J7 may all be electrically connected to Ground.
- A Gate terminal of MOSEFT Q5 may be electrically connected to another terminal of capacitor C18 and a terminal of resistor R31. Another terminal of resistor R31 may be electrically connected to an eighteenth pin of integrated chip U3. Another terminal of resistor R32 may be electrically connected to a seventeenth pin of integrated chip U3. Another terminal of resistor R2 may be electrically connected to another terminal of resistor R3, a first pin of integrated chip U4, and power supply J6. A second pin of integrated chip U4 may be electrically connected to a terminal of resistor R39, and a terminal of resistor R38. Another terminal of resistor R39 may be connected to Ground. Another terminal of resistor R38 may be electrically connected to signal SUN-ISEN, a terminal of capacitor C34 and a positive terminal of diode D8. A negative terminal of diode D8 and another terminal of capacitor C34 may be connected to Ground.
- A terminal of resistor R37 may be electrically connected to signal DATA, while another terminal of resistor R37 may be connected to Base terminal of transistor Q7. A collector terminal of transistor Q7 may be electrically connected to a terminal of resistor R36 and a second pin of power source J2. Another terminal of resistor R36 may be electrically connected to +3.6V voltage source. An emitter terminal of transistor Q7 and a first pin of power source J2 may be connected to the Ground.
- Another terminal of capacitor C8 may be electrically connected to +3.6 voltage source, and a first pin of integrated chip U7. Another terminal of capacitor C8 may be electrically connected to a second pin of integrated chip U7. Signal ACOK may be electrically connected to a third pin of integrated chip U7. Signal LD1 may be electrically connected to a fourth pin of integrated chip U7. Signal LD2 may be electrically connected to a fifth pin of integrated chip U7. Signal LD3 may be electrically connected to a sixth pin of integrated chip U7. Signal LD4 may be electrically connected to a seventh pin of integrated chip U7. Signal IADP may be electrically connected to a tenth pin of integrated chip U7. Signal IDCHG may be electrically connected to an eleventh pin of integrated chip U7. Signal SUN-ISEN may be electrically connected to twelfth pin of integrated chip U7. Signal PRO may be electrically connected to thirteenth pin of integrated chip U7. Signal SDA may be electrically connected to fourteenth pin of integrated chip U7. Signal SCL may be electrically connected to fifteenth pin of integrated chip U7. Signal DATA may be electrically connected to sixteenth pin of integrated chip U7. A terminal of resistor R12 may be electrically connected to a ninth pin of integrated chip U7. A terminal of resistor R10, a terminal of capacitor C11, and another terminal of resistor R10 may be electrically connected to power source BAT. Another terminal of resistor R12 and another terminal of capacitor C11 may be connected to the Ground.
- On the other hand, the +3.6V voltage source may be connected to a positive terminal of light emitting diode LLD3, a position terminal of light emitting diode LD4, a positive terminal of light emitting diode LD5, and a positive terminal of light emitting diode LD6. A negative terminal of light emitting diode LD3 may be electrically connected to a terminal of resistor R16, while another terminal of resistor R16 may be electrically connected to signal LD1. A negative terminal of light emitting diode LD4 may be electrically connected to a terminal of resistor R17, while another terminal of resistor R17 may be electrically connected to signal LD2. A negative terminal of light emitting diode LD5 may be electrically connected to a terminal of resistor R18, while another terminal of resistor R18 may be electrically connected to signal LD3. Resistor R19 may have one terminal electrically connected to light emitting diode LD6, and another terminal electrically connected to signal LD4. Resistor R21 may have one terminal electrically connected to voltage source VCC, and another terminal electrically connected to a negative terminal of diode D5, a second pin of integrated chip HT7536-1, and a terminal of capacitor C2. Another terminal of capacitor C2 may be connected to the Ground. A positive terminal of diode D5 may be electrically connected to voltage V-OUT.
- A third pin of integrated chip HT7536-1 may be electrically connected to +3.6 v voltage source, and a terminal of capacitor C5. Another terminal of capacitor C5 may be connected to the Ground. A first pin of integrated chip HT7536-1 may also be connected to the Ground.
- For the
solar charging module 52, a first pin of integrated chip JP1 may be electrically connected to +5V voltage source. A second pin of integrated chip JP2 may be electrically connected to signal SWIM and signal U4-26. A third pin of integrated chip JP3 may be connected to the Ground. A terminal of resistor R2 may be electrically connected to +5V voltage source. Another terminal of resistor R2 may be electrically connected to a fourth pin of integrated chip JP1, a terminal of capacitor C1, and signal RST and signal U4-1. Another terminal of capacitor C1 may be connected to the Ground. A fifth pin of integrated chip JP1 may be electrically connected to signal T and a terminal of resistor R21. Another terminal of resistor R21 may be electrically connected to signal U4-30. A sixth pin of integrated chip JP1 may be electrically connected to signal R and a terminal of resistor R11. Another terminal of resistor R11 may be electrically connected to signal U4-31. - A first pin of integrated chip P1 may be electrically connected to signal U4-18. A second pin of integrated chip P1 may be electrically connected to signal U4-19. A third pin of integrated chip P1 may be electrically connected to signal U4-20. A fourth pin of integrated chip P1 may be electrically connected to signal U4-21. A fifth pin of integrated chip P1 may be electrically connected to signal U4-22. A sixth pin of integrated chip P1 may be electrically connected to signal U4-23. A seventh pin of integrated chip P1 may be electrically connected to signal U4-24. An eighth pin of integrated chip P1 may be electrically connected to signal U4-2. A ninth pin of integrated chip P1 may be electrically connected to signal U4-3. A tenth pin of integrated chip P1 may be electrically connected to signal U4-7, a third pin of a parallel connected resistors group RP2, and a fourth pin of a parallel connected resistors group RP2. An eleventh pin of integrated chip P1 may be electrically connected to signal U4-8, a first pin of a parallel connected resistors group RP2, and a second pin of a parallel connected resistors group RP2. A twelfth pin of integrated chip P1 may be electrically connected to signal U4-9, a third pin of a parallel connected resistors group RP1, and a fourth pin of a parallel connected resistors group RP1. A thirteenth pin of integrated chip P1 may be electrically connected to signal U4-10, a first pin of a parallel connected resistors group RP1, and a second pin of a parallel connected resistors group RP1.
- A fifth pin, an eighth pin of the parallel connected resistors group RP1 and a fifth pin and an eighth pin of the parallel connected resistors group RP2 are connected to the Ground. A sixth pin and a seventh pin of the parallel connected resistors group RP1, and a sixth pin and a seventh pin of the parallel connected resistors group RP2 may be electrically connected to +5V voltage source.
- A first pin of integrated chip U4 may be electrically connected to signal U4-1. A second pin of integrated chip U4 may be electrically connected to signal U4-2. A third pin of integrated chip U4 may be electrically connected to signal U4-3. A fourth pin of integrated chip U4 may be connected to the Ground. A fifth pin of integrated chip U4 may be electrically connected to a terminal of capacitor C17, while another terminal of capacitor C17 may be connected to the Ground. A sixth pin of integrated chip U4 may be electrically connected to +5V voltage source. A seventh pin of integrated chip U4 may be electrically connected signal U4-7. An eighth pin of integrated chip U4 may be electrically connected signal U4-8. A ninth pin of integrated chip U4 may be electrically connected signal U4-9. A tenth pin of integrated chip U4 may be electrically connected signal U4-10. An eleventh pin and a twelfth pin of integrated chip U4 are not connected. A thirteenth pin of integrated chip U4 may be electrically connected to a terminal of resistor R41, a terminal of resistor R39, and a terminal of capacitor C13. Another terminal of resistor R41 may be electrically connected to power source VA. A terminal of resistor R39 and another terminal of capacitor C13 may be connected to the Ground. A fourteenth pin of integrated chip U4 may be electrically connected to a terminal of capacitor C5, a terminal of resistor R19, and a terminal of variable resistor RT2. Another terminal of resistor R19 may be electrically connected to +5V voltage source. Another terminal of capacitor C5 and another terminal of variable resistor RT2 may be connected to the Ground. A fifteenth pin of integrated chip U4 may be electrically connected to signal U4-15. A sixteenth pin of integrated chip U4 may be electrically connected to signal U4-16. A seventeenth pin of integrated chip U4 may be electrically connected to a terminal of resistor R8 and a terminal of switch K3. Another terminal of resistor R8 may be electrically connected to +5V voltage source. An eighteenth pin of integrated chip U4 may be electrically connected to signal U4-18. A nineteenth pin of integrated chip U4 may be electrically connected to signal U4-19. A twentieth pin of integrated chip U4 may be electrically connected to signal U4-20. A twenty first pin of integrated chip U4 may be electrically connected to signal U4-21. A twenty second pin of integrated chip U4 may be electrically connected to signal U4-22. A twenty third pin of integrated chip U4 may be electrically connected to signal U4-23. A twenty fourth pin of integrated chip U4 may be electrically connected to signal U4-24. A twenty fifth pin of integrated chip U4 may be electrically connected to a terminal of resistor R30. Another terminal of resistor R30 may be electrically connected to +5V voltage source. A twenty sixth pin of integrated chip U4 may be electrically connected to a signal U4-26. A twenty seventh pin of integrated chip U4 may be electrically connected to a signal U4-27. A twenty eighth pin of integrated chip U4 may be electrically connected to a terminal of resistor R49 and a terminal of switch K1. Another terminal of resistor R29 may be electrically connected to +5V voltage source. A twenty ninth pin of integrated chip U4 may be electrically connected to a terminal of resistor R62 and a terminal of switch K2. Another terminal of resistor R62 may be electrically connected to +5V voltage source. Moreover, another terminal of switch K11, switch K2 and switch K3 may be connected to the Ground. A thirtieth pin of integrated chip U4 may be electrically connected to signal U4-30. A thirtieth first pin of integrated chip U4 may be electrically connected to signal U4-31. A thirtieth second pin of integrated chip U4 may be electrically connected to signal U4-32.
- A terminal of resistor R46 may be electrically connected to signal U4-16, a terminal of resistor C12, and a terminal of resistor R40. Another terminal of resistor R46 and another terminal of capacitor C12 may be connected to the Ground. Another terminal of resistor R40 may be electrically connected to an output of operational amplifier U2B and a terminal of resistor R33. Another terminal of resistor R33 may be electrically connected to an inverting input of operational amplifier U2B and a terminal of resistor R29. Another terminal of resistor R29 may be connected to the Ground. A non-inverting input of operational amplifier U2B may be electrically connected to a positive terminal of diode D4, a terminal of capacitor C10, a terminal of resistor R22, and a terminal of resistor R27. A negative terminal of diode D4, another terminal of capacitor C10, another terminal of resistor R22, and another terminal of resistor R27 may be connected to the Ground. A terminal of resistor R37 may be electrically connected to signal U4-32 and a terminal of resistor R34. Another terminal of resistor R37 may be electrically connected to voltage source VB. Another terminal of resistor R34 may be electrically connected to a base terminal of transistor Q7. A collector terminal of transistor Q7 may be electrically connected to a terminal of resistor R42, and Gate terminal of MOSFET UA3. Another terminal of resistor R42 may be electrically connected to voltage source VB. A drain terminal of MOSFET UA3 may be connected to the Ground. A source terminal of MOSFET UA3 and an emitter terminal of transistor Q7 may be connected to the Ground. A positive terminal of diode D1 may be electrically connected to voltage source VA. A negative terminal of diode D1 may be electrically connected to a terminal of resistor R1, a terminal of resistor R3, and a collector terminal of transistor Q1. Another terminal of resistor R1 may be electrically connected to another terminal of resistor R3, a base terminal of transistor Q1 and a negative terminal of Zener diode ZD1. A positive terminal of Zener diode ZD1 may be connected to the Ground. An emitter terminal of transistor Q1 may be electrically connected to a positive terminal of electrolytic capacitor C4, a terminal of capacitor C11, a voltage source VB, a terminal of resistor R12, and a collector terminal of transistor Q5. A negative terminal of electrolytic capacitor C4 and another terminal of capacitor C11 may be connected to the Ground.
- Another terminal of resistor R12 may be electrically connected to a base terminal of transistor Q5, a negative terminal of Zener diode U1, a terminal of resistor R15, and a terminal of resistor R16. A positive terminal of Zener diode U1 and another terminal of resistor R16 may be connected to the Ground. Another terminal of resistor R15 may be electrically connected to an emitter terminal of transistor Q5, a positive terminal of electrolytic capacitor C6, a terminal of capacitor C7, a terminal of capacitor C8, and a +5V voltage source. A negative terminal of electrolytic capacitor C6, another terminal of capacitor C7, and another terminal of capacitor C8 may be connected to the Ground. A positive terminal of diode D5 may be electrically connected to voltage source VA and voltage source TP1. A negative terminal of diode D5 may be electrically connected to a positive terminal of electrolytic capacitor C2, a positive terminal of electrolytic capacitor C3, and a first pin of integrated chip U3.
- A fourth pin of integrated chip U3 may be disconnected. A second pin of integrated chip U3 may be electrically connected to a terminal of inductor L1 and a negative terminal of diode D6. Another terminal of inductor L1 may be electrically connected to a third pin of integrated chip U3, a positive terminal of electrolytic capacitor C14, a terminal of resistor R55, a terminal of resistor R53, a first pin of integrated chip USB, an eighth pin of integrated chip USB, and voltage source USB_+5V. Another terminal of resistor R55 may be electrically connected to a terminal of resistor R56, a second pin of integrated chip USB and a seventh pin of integrated chip USB. Another terminal of resistor R53 may be electrically connected to a terminal of resistor R52, a third pin of integrated chip USB and a sixth pin of integrated chip USB.
- A negative terminal of electrolytic capacitor C2, a negative terminal of electrolytic capacitor C3, a fifth pin of integrated chip U3, a sixth pin of integrated chip U3, a seventh pin of integrated chip U3, an eighth pin of integrated chip U3, a positive terminal of diode D6, a negative terminal of electrolytic capacitor C14, another terminal of resistor R56, another terminal of resistor R52, a fourth pin of integrated chip USB and a fifth pin of integrated chip USB are connected to the Ground.
- A terminal of resistor R28 may be electrically connected to signal U4-15. Another terminal of resistor R28 may be electrically connected to a terminal of resistor R26, a terminal of resistor R25, a terminal of capacitor C9, and a terminal of resistor R23. Another terminal of resistor R26 may be electrically connected to +5V voltage source. Another terminal of resistor R25 and another terminal of capacitor C9 may be connected to the Ground. Another terminal of resistor R23 may be electrically connected to a terminal of resistor R9, a terminal of resistor R47, a collector terminal of transistor Q3, a terminal of variable resistor MOV1, a positive terminal of Zener diode ZD2, a terminal of resistor R4, a Source terminal of MOSFET UA1, and a second pin of integrated chip COM1.
- Another terminal of resistor R9 may be electrically connected to a terminal of resistor R7, a terminal of resistor R13, a positive terminal of diode D3, and a base terminal of transistor Q3. A negative terminal of diode D3 may be electrically connected to an emitter terminal of transistor Q3, a negative terminal of Zener diode ZD2, and a gate terminal of MOSFET UA1. Another terminal of resistor R7 may be electrically connected to another terminal of resistor R13 and a collector terminal of transistor Q2.
- A positive terminal of diode D2 may be electrically connected to voltage source VA. A negative terminal of diode D2 may be electrically connected to an emitter terminal of transistor Q2 and a terminal of resistor R10. Another terminal of resistor R10 may be electrically connected to a terminal of resistor R14 and a base terminal of resistor Q2.
- Another terminal of resistor R14 may be electrically connected to a collector terminal of transistor Q4. A gate terminal of transistor Q4 may be electrically connected to a terminal of resistor R17 and a terminal of resistor R18. Another terminal of resistor R18 may be electrically connected to signal U4-27. Another terminal of resistor R17 and an emitter terminal of transistor Q4 may be connected to the Ground.
- A first pin of integrated chip COM1, a third pin of integrated chip COM1, and a fifth pin of integrated chip COM1 may be electrically connected to voltage source VA. A fourth pin of integrated chip COM1 and a sixth pin of integrated chip COM1 may be connected to the Ground.
- A drain terminal of MOSFET UA1 may be electrically connected to a drain terminal of MOSFET UA2. A source terminal of MOSFET UA2 and a terminal of resistor R24 may be connected to the Ground. A gate terminal of MOSFET UA2 may be electrically connected to another terminal of resistor R24, and a terminal of resistor R20. Another terminal of resistor R20 may be electrically connected to an output of operational amplifier U2A. A positive power input of the operational amplifier U2A may be electrically connected to voltage source VB. A negative power input of operational amplifier U2A may be connected to the Ground. An inverting input of operational amplifier U2A may be electrically connected to another terminal of resistor R47, a terminal of resistor R44, and a terminal of resistor R45. Another terminal of resistor R44 may be electrically connected to +5V voltage source. Another terminal of resistor R45 may be connected to the Ground. A non-inverting input of operational amplifier U2A may be electrically connected to a terminal of resistor R38 and a terminal of resistor R35. Another terminal of resistor R38 may be electrically connected to +5V voltage source. Another terminal of resistor R35 may be electrically connected to a terminal of resistor R36. Another terminal of resistor R36 may be connected to the Ground.
- The charging
control module 51 may be arranged to control and manage charging of therechargeable battery pack 40. For example, when an input voltage is 12V or 24V, the integrated chip HT7536-1, integrated chip U3, integrated chip U4 and integrated chip U7 may be configured to discharge and charge therechargeable battery pack 40 by using 6A current. The integrated chip HT7536-1, integrated chip U3, integrated chip U4 and integrated chip U7 may also be configured to protect overcharging, over-discharging or prevent short circuit of therechargeable battery pack 40. Moreover, the integrated chip HT7536-1, integrated chip U3, integrated chip U4 and integrated chip U7 may also be configured to protect the battery of the vehicle when the present invention is electrically connected to the vehicle's rechargeable battery. - The
solar charging module 52 may be configured to control and manage charging of the solar battery 62 by employing maximum voltage of 55V and charging current of 10A. Integrated chip JP1, integrated chip P1, integrated chip U4, integrated chip U3, integrated chip USB and integrated chip COM1 may be configured and programed to manage Pulse Width Modulation (PMW) charging cycles. - On the other hand, Zener diode ZD1, Zener diode ZD2, Zener diode U1, transistor Q1, transistor Q2, transistor Q3, transistor Q4, transistor Q5 and transistor Q7 may be utilized to prevent current overflow and short circuit so as to accomplish open circuit protection and reverse protection. MOSFET UA1, MOSEFT UA2, MOSFET UA3, resistors group RP1 and resistors group RP2 may be utilized to create a backflow prevention circuit.
- The
energy management module 53 may be configured to allocate the optimal voltage to thecompressor 32. Thecentral control unit 50 may be configured to accomplish uninterruptible power supply (UPS) so that it provides near-instantaneous protection from input power interruptions to thecompressor 32 and other components of thecooling mechanism 30. According to the preferred embodiment of the present invention, the preferred mode of power supply is through an external DC power input. An adapter may be utilized to convert an external AC power supply into a DC power supply. When both an external DC power input and therechargeable battery pack 40 are connected to the portable refrigerator, thecentral control unit 50 may first allocate the power from the external DC power supply to operate thecompressor 32 and other components of the portable refrigerator. When therechargeable battery pack 40 needs recharging, thecentral control unit 50 may be configured to allocate an optimal amount of power to recharge therechargeable battery pack 40 and at the same time to keep operating thecompressor 32. - Thus, the charging
control module 51, thesolar charging module 52 and theenergy management module 53 may allocate an optimal amount of electrical power to thecooling mechanism 30 and therechargeable battery pack 40. Thecooling mechanism 30 may have a priority in allocation of electrical power. When therechargeable battery pack 40 has insufficient battery level or power, thecentral control unit 50 may command charging of therechargeable battery pack 40. - Moreover, when the
rechargeable battery pack 40 is not connected to thecentral control unit 50, the portable refrigerator may also be powered by connecting it to an external power supply, such as an external DC power supply typically found in a vehicle, or the solar panel 62. - The present invention, while illustrated and described in terms of a preferred embodiment and several alternatives, is not limited to the particular description contained in this specification. Additional alternative or equivalent components could also be used to practice the present invention.
Claims (27)
1. A portable refrigerator, comprising:
a main housing having an accommodating cavity for storing at least one item, and a power compartment;
a refrigerator cover provided on said main housing for selectively closing said accommodating cavity;
a cooling mechanism which is supported by said main housing and comprises a plurality of heat exchanging tubes, a compressor, an evaporator connected to said compressor through at least one of said heat exchanging tubes, and a condenser connected to said evaporator and said compressor through at least one of said heat exchanging tubes;
a rechargeable battery pack detachably attached on said power compartment of said main housing, said rechargeable battery being adapted for connecting to a power source; and
a central control unit supported in said main housing and electrically connected to said rechargeable battery pack and said cooling mechanism for centrally controlling an operation of said cooling mechanism, wherein a predetermined amount of refrigerant is arranged to controllably pass through said heat exchanging tubes, said condenser, said evaporator and said compressor for extracting heat from said accommodating cavity.
2. The portable refrigerator, as recited in claim 1 , wherein said main housing comprises a front wall, a rear wall, and two side walls, wherein said accommodating cavity is formed as a space surrounded by said front wall, said rear wall and said side walls, said main housing further having an access opening as an opening of said accommodating cavity.
3. The portable refrigerator, as recited in claim 2 , wherein said main housing further comprises a first side peripheral rim, a second side peripheral rim and a rear peripheral rim upwardly extended from an outer surface of said two side walls and said rear wall respectively for connecting to said refrigerator cover, said access opening being formed at a position below said first side peripheral rim, said second side peripheral rim and said rear peripheral rim to define a cover seat as a space on top of said two side walls, said rear wall and said front wall and surrounded by said first side peripheral rim, said second side peripheral rim and said rear peripheral rim.
4. The portable refrigerator, as recited in claim 3 , wherein said refrigerator cover is detachably attached on said main housing to selectively close said access opening, said refrigerator cover comprising a cover body having a top surface, a bottom surface, a first side surface and a second side surface, said cover body having at least one indention formed on said top surface.
5. The portable refrigerator, as recited in claim 4 , wherein said refrigerator cover further comprises a frictional member configured to have a greater frictional force than other parts of said refrigerator cover for retaining external items on said frictional member.
6. The portable refrigerator, as recited in claim 5 , wherein said refrigerator cover further comprises a first connecting member and a second connecting member extended from said first side surface and said second side surface of said cover body respectively for pivotally and detachably connecting to said main housing.
7. The portable refrigerator, as recited in claim 6 , wherein said second connecting member has a quadrilateral cross-sectional shape, said main housing further having a first pivotal slot and a second pivotal slot formed on said first side peripheral rim and said second side peripheral rim respectively, wherein said first connecting member and said second connecting member are arranged to pivotally and detachably connect to said first pivotal slot and said second pivotal slot respectively, said second pivotal slot having a top opening, an enlarged portion and a contracted extension portion extended between said enlarged portion and said top opening, said second connecting member being arranged to pivotally move in said enlarged portion and to slide along said contraction extension portion only when said second connecting member aligns with said contracted extension portion.
8. The portable refrigerator, as recited in claim 1 , wherein said rechargeable battery pack comprises a battery housing and a battery core received in said battery housing, said battery housing having a front battery surface, a rear battery surface, two side battery surfaces, a top battery surface and a bottom battery surface, said rechargeable battery pack further comprising a locking arrangement operatively provided on said battery housing for allowing said battery housing to be selectively locked and detached from said power compartment.
9. The portable refrigerator, as recited in claim 8 , wherein said locking arrangement comprises a first actuating member, and a first resilient element mounted on said first actuating member to normally exert a biasing force thereto, said locking arrangement further containing a plurality of through passage holes formed on said battery housing, said first actuating member is arranged to selectively and partially pass through said corresponding through passage holes.
10. The portable refrigerator, as recited in claim 9 , wherein said first actuating member has a first locking latch, a second locking latch, and a first depressing member positioned between said first locking latch and said second locking latch, said first resilient elements being arranged to normally exert a biasing force against said first actuating member so as to drive said first locking latch, said second locking latch and said first depressing member to normally expose out of said battery housing through said corresponding through passage holes.
11. The portable refrigerator, as recited in claim 10 , wherein said locking arrangement comprises a second actuating member and a second resilient element mounted on said second actuating member to normally exert a biasing force thereto, said second actuating member is arranged to selectively and partially pass through said corresponding through passage holes.
12. The portable refrigerator, as recited in claim 11 , wherein said second actuating member has a third locking latch, a fourth locking latch, and a second depressing member positioned between said third locking latch and said fourth locking latch, said second resilient element is arranged to normally exert a biasing force against said second actuating member so as to drive said third locking latch, said fourth locking latch and said second depressing member to normally and partially expose out of said battery housing through said corresponding through passage holes.
13. The portable refrigerator, as recited in claim 10 , wherein said battery housing further has a first battery indention indently formed on said front battery surface and said top battery surface, wherein one of said through passage holes is formed on a first indention surface of said first battery indention, said first depressing member being normally pushed to expose out of said battery housing through said corresponding through passage hole.
14. The portable refrigerator, as recited in claim 12 , wherein said battery housing further has a second battery indention indently formed on said front battery surface and said bottom battery surface, wherein one of said through passage holes is formed on a second indention surface of said second battery indention, said second depressing member being normally pushed to expose out of said battery housing through said corresponding through passage hole.
15. The portable refrigerator, as recited in claim 8 , wherein said battery housing is divided into a front thicker portion and a rear thinner portion, said bottom battery surface of said battery housing being divided into a front section, a rear section and a biasing surface as a boundary surface between said front section and said rear section, wherein said front section is formed as said bottom surface of said front thicker portion of said battery housing, while said rear section is formed as said bottom surface of said rear thinner portion.
16. The portable refrigerator, as recited in claim 10 , wherein said battery housing is divided into a front thicker portion and a rear thinner portion, said bottom battery surface of said battery housing being divided into a front section, a rear section and a biasing surface as a boundary surface between said front section and said rear section, wherein said front section is formed as said bottom surface of said front thicker portion of said battery housing, while said rear section is formed as said bottom surface of said rear thinner portion.
17. The portable refrigerator, as recited in claim 14 , wherein said battery housing is divided into a front thicker portion and a rear thinner portion, said bottom battery surface of said battery housing being divided into a front section, a rear section and a biasing surface as a boundary surface between said front section and said rear section, wherein said front section is formed as said bottom surface of said front thicker portion of said battery housing, while said rear section is formed as said bottom surface of said rear thinner portion, said second battery indention, said third locking latch and said fourth locking latch being provided on said front section of said bottom battery surface.
18. The portable refrigerator, as recited in claim 8 , wherein said power compartment is surrounded by a top compartment surface, a bottom compartment surface, a rear compartment surface, and two side compartment surfaces, said battery housing further having a plurality of securing slots formed on said top battery surface and said bottom battery surface respectively, said main housing further comprising a plurality of securing ridges formed on a top compartment surface and a bottom compartment surface of said power compartment at positions corresponding to said securing slots of said battery housing.
19. The portable refrigerator, as recited in claim 16 , wherein said power compartment is surrounded by a top compartment surface, a bottom compartment surface, a rear compartment surface, and two side compartment surfaces, said battery housing further having a plurality of securing slots formed on said top battery surface and rear section of said bottom battery surface respectively, said main housing further comprising a plurality of securing ridges formed on a top compartment surface and a bottom compartment surface of said power compartment at positions corresponding to said securing slots of said battery housing.
20. The portable refrigerator, as recited in claim 17 , wherein said power compartment is surrounded by a top compartment surface, a bottom compartment surface, a rear compartment surface, and two side compartment surfaces, said battery housing further having a plurality of securing slots formed on said top battery surface and rear section of said bottom battery surface respectively, said main housing further comprising a plurality of securing ridges formed on a top compartment surface and a bottom compartment surface of said power compartment at positions corresponding to said securing slots of said battery housing.
21. The portable refrigerator, as recited in claim 8 , wherein said battery housing further has a plurality of positioning recesses provided on said bottom battery surface for assisting positioning of said battery housing in said power compartment.
22. The portable refrigerator, as recited in claim 18 , wherein said battery housing further has a plurality of positioning recesses provided on said bottom battery surface for assisting positioning of said battery housing in said power compartment.
23. The portable refrigerator, as recited in claim 20 , wherein said battery housing further has a plurality of positioning recesses provided on said bottom battery surface for assisting positioning of said battery housing in said power compartment.
24. The portable refrigerator, as recited in claim 22 , wherein said bottom compartment surface is divided into a front segment and a rear segment wherein a vertical height of said front segment is lower than that of said rear segment to form an urging surface as a boundary surface between said front segment and said rear segment, said main housing may further comprising a plurality of positioning protrusions formed on said front segment of said bottom compartment surface at positions corresponding to said positioning recesses of said battery housing.
25. The portable refrigerator, as recited in claim 23 , wherein said bottom compartment surface is divided into a front segment and a rear segment wherein a vertical height of said front segment is lower than that of said rear segment to form an urging surface as a boundary surface between said front segment and said rear segment, said main housing may further comprising a plurality of positioning protrusions formed on said front segment of said bottom compartment surface at positions corresponding to said positioning recesses of said battery housing.
26. The portable refrigerator, as recited in claim 8 , further comprising a solar energy arrangement which comprises a solar panel detachably attached on said main housing and electrically connected to said central control unit.
27. The portable refrigerator, as recited in claim 13 , further comprising a solar energy arrangement which comprises a solar panel detachably attached on said main housing and electrically connected to said central control unit.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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US16/856,889 US20200333063A1 (en) | 2018-10-26 | 2020-04-23 | Portable Refrigerator |
US17/039,978 US11747075B2 (en) | 2018-10-26 | 2020-09-30 | Portable refrigerator with rechargeable battery pack |
US18/456,743 US20230408164A1 (en) | 2018-10-26 | 2023-08-28 | Portable Refrigerator |
Applications Claiming Priority (10)
Application Number | Priority Date | Filing Date | Title |
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CN201821740385.5 | 2018-10-26 | ||
CN201821740385.5U CN209225098U (en) | 2018-10-26 | 2018-10-26 | Dismountable redundant electrical power storing unit on a kind of car refrigerator |
CN201821950528.5 | 2018-11-26 | ||
CN201821950528.5U CN209233549U (en) | 2018-11-26 | 2018-11-26 | A kind of battery back outdoor type portable type solar energy car refrigerator circuit |
CN201822171825.6 | 2018-12-24 | ||
CN201822171825.6U CN209639345U (en) | 2018-12-24 | 2018-12-24 | A kind of car refrigerator lid |
CN201920766615.3 | 2019-05-27 | ||
CN201920766615.3U CN210374226U (en) | 2019-05-27 | 2019-05-27 | Portable solar vehicle-mounted refrigerator with battery energy storage function |
US16/447,623 US10641538B1 (en) | 2018-10-26 | 2019-06-20 | Portable refrigerator with rechargeable battery pack |
US16/856,889 US20200333063A1 (en) | 2018-10-26 | 2020-04-23 | Portable Refrigerator |
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US16/447,623 Division US10641538B1 (en) | 2018-10-26 | 2019-06-20 | Portable refrigerator with rechargeable battery pack |
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US17/039,978 Continuation-In-Part US11747075B2 (en) | 2018-10-26 | 2020-09-30 | Portable refrigerator with rechargeable battery pack |
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US20200333063A1 true US20200333063A1 (en) | 2020-10-22 |
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US16/447,623 Active US10641538B1 (en) | 2018-10-26 | 2019-06-20 | Portable refrigerator with rechargeable battery pack |
US16/856,889 Abandoned US20200333063A1 (en) | 2018-10-26 | 2020-04-23 | Portable Refrigerator |
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US16/447,623 Active US10641538B1 (en) | 2018-10-26 | 2019-06-20 | Portable refrigerator with rechargeable battery pack |
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Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USD958203S1 (en) * | 2018-04-04 | 2022-07-19 | ACOSolar Inc. | Portable refrigerator |
USD944299S1 (en) * | 2019-04-17 | 2022-02-22 | Lifetime Products, Inc. | Cooler |
US11691800B2 (en) * | 2019-05-16 | 2023-07-04 | Thaddeus Medical Systems, Inc. | Transportable active cooling container |
USD922454S1 (en) * | 2019-06-20 | 2021-06-15 | ACOSolar Inc. | Portable refrigerator |
USD937328S1 (en) * | 2019-09-17 | 2021-11-30 | ACOSolar Inc. | Portable refrigerator |
US20210296711A1 (en) * | 2020-03-20 | 2021-09-23 | Foshan Alpicool Electric Appliance Co., LTD. | Solar rechargeable vehicle refrigerator with plug-in battery |
USD969176S1 (en) * | 2020-04-07 | 2022-11-08 | Foshan Alpicool Electric Appliance Co., LTD. | Car fridge |
USD958845S1 (en) * | 2020-04-07 | 2022-07-26 | Foshan Alpicool Electric Appliance Co., LTD. | Car fridge |
JP7510779B2 (en) * | 2020-04-09 | 2024-07-04 | 株式会社マキタ | Refrigerator |
USD958847S1 (en) * | 2020-05-11 | 2022-07-26 | Foshan Alpicool Electric Appliance Co., LTD. | Car fridge |
US20220034580A1 (en) * | 2020-07-29 | 2022-02-03 | Bernard Smith | Portable Refrigerator Assembly |
US20220049885A1 (en) * | 2020-08-14 | 2022-02-17 | Hussmann Corporation | Temperature-controlled container |
USD952701S1 (en) * | 2020-10-21 | 2022-05-24 | Ningbo Aquart Electrical Appliance Co., Ltd. | Car refrigerator |
USD946635S1 (en) * | 2021-04-23 | 2022-03-22 | Gd Jg Electronic Ltd. | Refrigerator |
USD986298S1 (en) * | 2021-05-25 | 2023-05-16 | ACOSolar Inc. | Portable refrigerator |
SE2151161A1 (en) * | 2021-09-22 | 2023-03-23 | Husqvarna Ab | Improved fluid storage container |
USD1014453S1 (en) * | 2022-01-12 | 2024-02-13 | ACOSolar Inc. | Portable refrigerator |
USD993993S1 (en) * | 2022-01-13 | 2023-08-01 | Guangdong Iceco Enterprise Co., Ltd. | Car refrigerator |
USD996476S1 (en) * | 2022-01-14 | 2023-08-22 | Guangdong Iceco Enterprise Co., Ltd. | Car refrigerator |
JP1762565S (en) * | 2022-09-22 | 2024-01-30 | portable refrigerator | |
USD1031797S1 (en) * | 2023-02-15 | 2024-06-18 | Guangzhou Boju Information Technology Co., Ltd. | Refrigerator |
USD1034712S1 (en) * | 2023-03-08 | 2024-07-09 | Guangzhou Boju Information Technology Co., Ltd. | Outdoor refrigerator |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
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US6870089B1 (en) | 2002-11-12 | 2005-03-22 | Randolph Dean Gray | System and apparatus for charging an electronic device using solar energy |
WO2007098244A2 (en) * | 2006-02-21 | 2007-08-30 | Healthcare Products International, Inc. | Method and device for the transportation of temperature sensitive materials |
US7481070B2 (en) | 2006-04-14 | 2009-01-27 | Costanzo Phillip E | Solar powered chilled cooler |
US10345026B2 (en) | 2006-10-20 | 2019-07-09 | David J Fire | Beverage dispensing cooler |
US8353167B2 (en) | 2007-04-16 | 2013-01-15 | Ignite Innovations LLC | Solar-powered refrigerated container |
US20090158770A1 (en) * | 2007-12-22 | 2009-06-25 | Stefan Cohrs | Portable cooler with powered cooling system |
JP2014197515A (en) * | 2013-03-29 | 2014-10-16 | 日立工機株式会社 | Battery pack and electric apparatus |
US20160003505A1 (en) | 2014-07-02 | 2016-01-07 | Spencer Trotter | Collapsible solar refrigerator device |
CN107548285A (en) * | 2015-03-11 | 2018-01-05 | 斯韦尔工业有限责任公司 | Dropped stitch charge air cooler |
US10618692B2 (en) * | 2016-03-09 | 2020-04-14 | Makita Corporation | Stackable cases |
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- 2019-06-20 US US16/447,623 patent/US10641538B1/en active Active
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2020
- 2020-04-23 US US16/856,889 patent/US20200333063A1/en not_active Abandoned
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US10641538B1 (en) | 2020-05-05 |
US20200132356A1 (en) | 2020-04-30 |
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