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CN-122029718-A - Portable battery charger of fuel cell type

CN122029718ACN 122029718 ACN122029718 ACN 122029718ACN-122029718-A

Abstract

A portable charger (10) for at least one battery (12) is described, the charger comprising-an electric generator (20) of the fuel cell type, -a fuel tank (30) for the generator arranged below the generator, -a unit (40) for charging the at least one battery arranged above and adjacent to the generator, the unit comprising a plurality of connectors (41) configured to be connected to charging terminals of the at least one battery and a support surface (42) adapted to accommodate the at least one battery.

Inventors

  • GIANLUCA BARBOLINI

Assignees

  • 意玛克股份公司

Dates

Publication Date
20260512
Application Date
20240905
Priority Date
20231011

Claims (10)

  1. 1. A portable charger (10) for at least one battery (12), the charger comprising: -an electric generator (20) of the fuel cell type, A fuel tank (30) for the generator arranged below the generator, -A unit (40) for charging the at least one battery arranged above and adjacent to the generator, the unit comprising a plurality of connectors (41) configured to be connected to charging terminals of the at least one battery and a support surface (42) adapted to house the at least one battery.
  2. 2. Portable charger according to claim 1, characterized in that the support surface (42) is inclined with respect to the horizontal surface by an angle (α) between 4 ° and 15 ° such that a first end (43) of the support surface is arranged at a height (D43) from the bottom (11) of the charger, which height (D43) is lower than a height (D44) of a second end (44) of the support surface opposite to the first end from the bottom (11) of the charger, the plurality of connectors being arranged adjacent to the first end of the support surface.
  3. 3. Portable charger according to claim 2, characterized in that the support surface (42) is inclined with respect to the horizontal surface by an angle (α) of 8 °.
  4. 4. Portable charger according to claim 1, characterized in that it comprises a control unit (50), said control unit (50) being adapted to manage the charging of said at least one battery such that during an initial charging period the charging voltage (Vc) follows a ramp trend from a discharged battery value to a steady state value over a time interval (T) between 0.5 and 5 seconds.
  5. 5. The portable charger according to claim 4, characterized in that the control unit (50) comprises at least one voltage sensor (300) adapted to detect the voltage at the end of the at least one battery and another voltage sensor (200) adapted to detect the voltage at the end of the fuel cell type of electric power generator.
  6. 6. The portable charger according to claim 4, wherein the control unit (50) comprises at least one temperature sensor (100) capable of detecting the temperature of the battery, the control unit being configured to charge the battery if the temperature is below a predetermined temperature.
  7. 7. The portable charger according to claim 6, characterized in that the portable charger comprises a fan (70), the control unit being adapted to activate the fan if the temperature of the at least one battery is higher than the predetermined temperature.
  8. 8. Portable charger according to claim 1, characterized in that it comprises a handle (60) for its transportation arranged on top of the portable charger.
  9. 9. The portable charger of claim 1 wherein the fuel for the fuel cell is methanol diluted in distilled water.
  10. 10. The portable charger of claim 9 wherein the percentage of methanol in distilled water is between 3% and 7%.

Description

Portable battery charger of fuel cell type Technical Field The present invention relates to a portable battery charger of the fuel cell type. Background Battery chargers for vehicles or power tools used in manufacturing or agriculture (such as lawnmowers, brush knives, chain saws, etc.) are known in the art. Currently, battery charging devices are stationary, and in fact, there currently exist practical electric battery charging stations in which a charger is connected to an external power grid and supplies current to power one or more batteries. Typically, the station involves charging a vehicle or tool battery connected between the station charger and the battery using a cable. In recent years, more and more private power stations have emerged, located in the vicinity of buildings and adapted to be powered by the building's own power grid. However, this means that the user always has to go to the nearest charging station to recharge the battery, which causes considerable problems in case the battery of the vehicle or electric tool is discharged before reaching the charging station. It is therefore an object of the present invention to overcome the above-mentioned drawbacks. A further object is to achieve such objects in the context of a rational, efficient and cost-effective solution. These objects are achieved by the features of the invention set forth in the independent claims. The dependent claims outline preferred and/or particularly advantageous aspects of the invention. Disclosure of Invention In particular, the present invention provides a portable charger for at least one battery, the charger comprising: An electrical generator of the fuel cell type, A fuel tank for the generator arranged below the generator, -A unit for charging the at least one battery arranged above and adjacent to the generator, the unit comprising a plurality of connectors configured to be connected to charging terminals of the at least one battery and a support surface adapted to accommodate the at least one battery. Thanks to the invention, a battery charger can be created, in particular for electric vehicles or electric tools, which can be easily transported, with small dimensions and limited weight. Preferably, the support surface is inclined at an angle between 4 ° and 15 ° with respect to the horizontal surface such that a first end of the support surface is arranged at a lower height from a bottom of the charger than a second end of the support surface opposite the first end, the plurality of connectors being arranged adjacent to the first end of the support surface. Thus, at least one battery is held on the support surface and contacts the charger connector by gravity. Preferably, the support surface is inclined from the horizontal surface by an angle of 8 °. This enables a portable charger of limited size to be created by ensuring that at least one battery is on a support surface and in contact with the charger connector. Preferably, the portable charger comprises a control unit adapted to manage the charging of the at least one battery such that during an initial charging period the charging voltage follows a ramp trend from a discharged battery value to a steady state value over a time interval between 0.5 seconds and 5 seconds. The ramping tendency of the charging voltage allows avoiding a voltage drop across the fuel cell. Preferably, the control unit comprises at least one voltage sensor adapted to detect a voltage at an end of the at least one battery and another voltage sensor adapted to detect a voltage at an end of the fuel cell type of electric power generator. Preferably, the control unit comprises at least one temperature sensor adapted to detect the temperature of the battery, the control unit being configured to charge the battery if the temperature is below a predetermined temperature. Preferably, the portable charger comprises a fan and the control unit is adapted to activate the fan if the temperature of the at least one battery is higher than the predetermined temperature. Preferably, the portable charger comprises a handle for its transportation arranged on top of said portable charger. Preferably, the fuel for the fuel cell is methanol diluted in distilled water, in particular the percentage of methanol in distilled water is between 3% and 7%. Drawings Other features and advantages of the invention will become more apparent upon reading the following description, provided by way of non-limiting example, with the aid of the following drawings, which are illustrated in the accompanying drawings: fig. 1 is a perspective view of a portable battery charger of the fuel cell type according to the present invention; fig. 2 is a rear view of the portable charger of fig. 1; FIG. 3 is a side view of the portable charger of FIG. 1; Fig. 4 is a cross-sectional view of line IV-IV of the portable charger according to fig. 3; FIG. 5 is a schematic diagram of the portable charger control unit of FIG. 1; FIG. 6 is