Patent Description:
Portable refrigerators are refrigerators which are usable with mobility. For a common vehicle-mounted refrigerator, the power plug of the refrigerator is inserted into the vehicle's cigarette lighter to provide power to the portable refrigerator. In some occasions, portable refrigerators have independent power sources. However, the external power source of portable refrigerator cannot be integrated with the portable refrigerator body into one, which is inconvenient for use.

<CIT> shows a mechanical installation frame for fixing an external power source to an automobile refrigerator.

<CIT> shows a waterproof portable power supply.

<CIT> shows a waterproof battery module for an electric vehicle.

<CIT> shows a waterproof battery pack for electric outdoor devices.

<CIT>shows a waterproof battery pack for an electric bicycle, comprising magnetic high-current discharge connectors with anti-insertion properties.

The technical issue is to provide a waterproof external power source for a portable refrigerator, which can be installed at a side portion of the portable refrigerator and facilitate the connection and use of the portable refrigerator and the power source.

The technical solution to this issue is provided by a waterproof external power source according to claim <NUM>.

The waterproof external power source for a portable refrigerator includes a casing, a battery pack installed in the casing, a battery-pack-fixing and current-outputting device, and a power source installation device for fixing a power source to the outside of the portable refrigerator, where the power source installation device is a magnetic installation device.

The power source installation device includes magnet installation frames and magnets; each of the magnet installation frames includes a support portion and a magnet groove, the magnet is fixed in the magnet groove, and a hole is provided at the bottom of the casing; and, a lower portion of the support portion is glued and fixed to the inside of the bottom of the casing by sealant, and the magnet groove passes through the hole.

Further, the battery-pack-fixing and current-outputting device includes a bracket, a control circuit board installed at a second end of the bracket, a display light board, an input socket, an output socket, a bracket fastener installed at a first end of the bracket, and a heat-dissipation aluminum plate arranged at the bottom of the bracket; the inside of the bracket is hollow, and the battery pack is arranged in the bracket; two ends of an inner wall of the casing are respectively provided with protruding first and second stop bars, and the outline of the first end of the bracket is larger than the first stop bar and is smaller than the second stop bar, the outline of the second end of the bracket is larger than the second stop bar, the first end of the bracket is inserted into the casing from the end where the second stop bar is located and then is slid to the other end to abut against the inner wall of the first stop bar, and the second end of the bracket abuts against an outer wall of the second stop bar; and the outline of the bracket fastener is larger than the first stop bar, so that the bracket fastener abuts against the outside of the first stop bar, the bracket fastener is bolted to the first end of the bracket, so that two ends of the bracket are fixed in the casing and cannot move.

Further, the second end of the bracket and the outer peripheral surface of the bracket fastener are both provided with a sealing ring.

Further, the waterproof external power source further includes a waterproof label sticker pasted on the outside of the second end of the bracket and a waterproof back sticker pasted on the outside of the bracket fastener.

Further, the magnet installation frame is made of plastic, and the outer surface of the bottom of the magnet groove is pasted with a silicone film.

Further, the hole and the magnet groove have the same shape and size.

Further, the magnet installation frames are symmetrically distributed on the bottom of the casing.

Further, the casing is made of aluminum alloy or plastic, and the bracket is made of plastic.

Implementing the waterproof external power source for the portable refrigerator according to the invention has the following beneficial effects: by arranging the magnetic installation device on the external power source, the external power source can be installed at a side portion of the portable refrigerator, which facilitates the connection and use of the portable refrigerator and the power source, avoids the external power source from being placed in a disorderly manner, and achieves easy installation and simple disassembly.

The invention is further described below in conjunction with the accompanying drawings and embodiments. In the accompanying drawings:.

A waterproof external power source for a portable refrigerator includes a casing <NUM>, a battery pack <NUM> installed in the casing <NUM>, a battery-pack-fixing and current-outputting device <NUM>, and a power source installation device <NUM> for fixing a power source to the outside of the portable refrigerator, where the power source installation device <NUM> is a magnetic installation device. The casing <NUM> is configured to carry the battery pack <NUM>, the battery pack <NUM> is a lithium battery pack to provide power for the portable refrigerator, and the battery-pack-fixing and current-outputting device <NUM> is configured to fix the battery pack <NUM> in the casing <NUM>. In the prior art, the external power source of the portable refrigerator is not fixed to the portable refrigerator for use, which causes problems such as the external power source is scattered and inconvenient to store when used. The waterproof external power source is provided with the power source installation device <NUM> to integrate the power source and the portable refrigerator into a whole, which facilitates the connection between the portable refrigerator and the external power source. The power source installation device is a magnetic connector, which will be described in detail below.

The battery-pack-fixing and current-outputting device <NUM> includes a bracket <NUM>, a control circuit board <NUM> installed at a second end of the bracket <NUM>, a display light board <NUM>, an input socket <NUM>, an output socket <NUM>, a bracket fastener <NUM> installed at a first end of the bracket <NUM>, and a heat-dissipation aluminum plate <NUM> arranged at the bottom of the bracket <NUM>; the bracket is configured to place the battery pack <NUM>, the control circuit board <NUM> is configured to control the on-off of the external power source, the display light board <NUM> is configured to indicate the on-off status, the input socket <NUM> and the output socket <NUM> are respectively used for the input and output of current, the bracket fastener <NUM> is configured to lock the bracket <NUM> in the casing <NUM>, and the heat dissipation aluminum plate <NUM> is configured to conduct the heat generated by the battery pack <NUM> to the bottom of the casing <NUM> and then to the air.

The inside of the bracket <NUM> is hollow, and the battery pack <NUM> is arranged in the bracket <NUM>; two ends of an inner wall of the casing <NUM> are respectively provided with a protruding first stop bar and a protruding second stop bar <NUM>, and the outline of the first end of the bracket <NUM> is larger than the first stop bar and is smaller than the second stop bar <NUM>, the outline of the second end of the bracket <NUM> is larger than the second stop bar <NUM>, the first end of the bracket <NUM> is inserted into the casing <NUM> from the end where the second stop bar <NUM> is located and then is slid to the other end to abut against the inner wall of the first stop bar, and the second end of the bracket <NUM> abuts against an outer wall of the second stop bar <NUM>; and the outline of the bracket fastener <NUM> is larger than the first stop bar, so that the bracket fastener <NUM> abuts against the outside of the first stop bar, the bracket fastener <NUM> is bolted to the first end of the bracket <NUM>, so that two ends of the bracket <NUM> are fixed in the casing <NUM> and cannot move. In order to fix the bracket <NUM> in the casing <NUM> so that the bracket <NUM> cannot move or shake to avoid noise and hidden dangers of damage to the parts, two ends of the inner wall of the casing <NUM> are respectively provided with stop bars, and each of the stop bars is a circular boss protruding from the inner wall to abut against the bracket <NUM>. The outline of the first end of the bracket <NUM> is small, and the second end has a protruding circular boss with a larger outline. The first end can be inserted into the casing <NUM> from the end where the second stop bar <NUM> is located, and then abut against the inner wall of the first stop bar. At this time, the second end abuts against the outer wall of the second stop bar <NUM>. The bracket fastener <NUM> is provided on the outside of the first stop bar, which abuts against the first stop bar and is connected to the first end of the bracket <NUM> by bolts. So that the first end of the bracket <NUM> is fixed by the bracket fastener <NUM> through bolts, and the second end abuts against the outer wall of the second stop bar <NUM>, and both ends are fixed and cannot be shaken.

In this embodiment, the second end of the bracket <NUM> and the outer peripheral surface of the bracket fastener <NUM> are both provided with a sealing ring <NUM> for sealing the two ends of the bracket <NUM> to achieve the purpose of sealing and waterproofing.

The waterproof external power source in this embodiment further includes a waterproof label sticker <NUM> pasted on the outside of the second end of the bracket <NUM> and a waterproof back sticker <NUM> pasted on the outside of the bracket fastener <NUM>. The waterproof label sticker <NUM> covers and seals electrical components at the first end of the bracket <NUM>, the second end of the bracket <NUM> is bolted to the bracket fastener <NUM>, and the waterproof back sticker <NUM> covers the fixing bolts, which makes the overall appearance more beautiful and plays a waterproof role on two sides of the power source.

In this embodiment, the power source installation device <NUM> is a magnetic installation device, which including magnet installation frames <NUM> and magnets <NUM>;.

Each of the magnet installation frames <NUM> includes a support portion <NUM> and a magnet groove <NUM>, the magnet <NUM> is fixed in the magnet groove <NUM>, and a hole is provided at the bottom of the casing <NUM>; and, a lower portion of the support portion <NUM> is glued and fixed to the inside of the bottom of the casing <NUM> by sealant, and the magnet groove <NUM> passes through the hole. The support portion <NUM> is a flat plate and extends downward out of the groove, that is, the magnet groove <NUM>. The lower portion of the support portion <NUM> is fixed to the bottom of the casing <NUM> and is glued thereto with sealant for waterproofing. Since the casing of the portable refrigerator is made of metal, the external power source can be attached to a side portion of the portable refrigerator by providing magnets at the bottom.

In this embodiment, the magnet installation frame <NUM> is made of plastic. The outer surface of the bottom of the magnet groove <NUM> is pasted with a silicone film. The silicone film is adhered to the bottom of the magnet groove <NUM> with double-sided adhesive to prevent scratching the casing of the portable refrigerator and increase the frictional force, so that the external power source will not move when attached to the portable refrigerator.

In this embodiment, the hole and the magnet groove <NUM> have the same shape and size, and both are square, so that the hole is closely fitted with the magnet groove <NUM> to prevent water leakage from the bottom.

In this embodiment, the magnet installation frames <NUM> are symmetrically distributed at the bottom of the casing <NUM>. In this embodiment, two sets of magnet installation frames <NUM> are provided on the left and right sides of the casing <NUM>. Of course, other number of magnet installation frames may be provided as required, as long as the waterproof external power source can be stably fixed on the side wall of the portable refrigerator.

In this embodiment, which is not part of the invention, the power source installation device <NUM> is a mechanical installation frame, which includes a fixing frame <NUM>, and two ends of the fixing frame <NUM> are provided with installation feet <NUM> with screw holes. The fixing frame surrounds three sides of the external power source and fixes the external power source on the side wall of the portable refrigerator. In this embodiment, screw holes need to be pre-punched on the portable refrigerator to match with the screw holes of the installation feet <NUM>.

The difference between this embodiment and the second embodiment is that the fixing frame <NUM> is an L-shaped fixing frame, one end of the fixing frame is connected to the side wall of the portable refrigerator, and the other end of the fixing frame is connected to the casing <NUM> of the external power source. In this embodiment, which is also not part of the invention, in addition to the requirement of pre-punching screw holes on the portable refrigerator, it is also required to provide screw holes on the casing <NUM>, and multiple fixing frames <NUM> are required to stably fix the external power source on the side wall of the portable refrigerator.

In the above three embodiments, the casing <NUM> is made of aluminum alloy or plastic, and the bracket <NUM> is made of plastic, both of which are lighter materials and facilitate the fixation of the power source on the side wall of the portable refrigerator.

Claim 1:
A waterproof external power source for a portable refrigerator, comprising a casing (<NUM>), a battery pack (<NUM>) installed in the casing (<NUM>), a battery-pack-fixing and current-outputting device (<NUM>), and a power source installation device (<NUM>) for fixing a power source to the outside of the portable refrigerator, characterized in that, the power source installation device (<NUM>) is a magnetic installation device, wherein the power source installation device (<NUM>) comprises magnet installation frames (<NUM>) and magnets (<NUM>); each of the magnet installation frames (<NUM>) comprises a support portion (<NUM>) and a magnet groove (<NUM>), the magnet (<NUM>) is fixed in the magnet groove (<NUM>), and a hole is provided at the bottom of the casing (<NUM>); and, a lower portion of the support portion (<NUM>) is glued and fixed to the inside of the bottom of the casing (<NUM>) by sealant, and the magnet groove (<NUM>) passes through the hole.