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Paramétrages

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1. WO2020111998 - CHARGEUR DE BATTERIE DOTÉ D'UNE PLURALITÉ DE CIRCUITS DE TRANSFORMATEUR SECONDAIRES

Note: Texte fondé sur des processus automatiques de reconnaissance optique de caractères. Seule la version PDF a une valeur juridique

[ EN ]

CLAIMS

1. A battery charger (100), wherein the battery charger (100) includes a charging

circuit (110) which comprises:

a primary transformer circuit (200) connectable to a power source (120) to receive charging current from the power source (120); and

a plurality of secondary transformer circuits (210, 220), wherein at least one of the plurality of secondary circuits (210, 220) is arranged to cooperate with the primary transformer circuit (200) to provide a charging voltage to at least one battery (130), and wherein the plurality of secondary transformer circuits (210, 220) are connected in series with each other; and wherein

a first secondary transformer circuit (210) is configured to provide a first charging voltage to the at least one battery (130) by means of a first associated output (10), and

at least one second secondary transformer circuit (220) is configured to provide an additive charging voltage, which is added to the first charging voltage from the first secondary transformer circuit (210) to form a second charging voltage, wherein the second charging voltage is provided to the at least one battery (130) by means of a second associated output (20).

2. The battery charger (100) according to claim 1, wherein the first charging voltage is of a Safety Extra Low Voltage, SELV, class.

3. The battery charger (100) according to claim 1 or 2, wherein the same Volt- Ampere, VA, ratings are used on the first and second associated outputs (10, 20) of the plurality of secondary transformer circuits (210, 220) as for the primary transformer circuit (200).

4. The battery charger (100) according to claim 1 or 2, wherein the current rating at the first associated output (10) of the first secondary transformer circuit (210) is the same as the current rating at the second associated output (20) of the at least one second secondary transformer circuit (220).

5. The battery charger (100) according to any of the previous claims, wherein the battery charger (100) further comprises a charge control circuit (150) connected to the charging circuit (110), and wherein the charge control circuit (150) is arranged to identify which of said associated output (10,20) the at least one battery (130) is connected to.

6. The battery charger (100) according to claim 5, wherein the charge control circuit (150) is arranged to identify which of said associated output (10,20) the at least one battery (130) is connected to by communication with the at least one battery (130).

7. The battery charger (100) according to claim 5, wherein the charge control circuit (150) is arranged to identify which of said associated output (10,20) the at least one battery (130) is connected to by sensing where battery voltage is present.

8. The battery charger (100) according to any of claims 5 to 7, wherein the charge control circuit (150) is arranged to use voltage feedback from the at least one second secondary transformer circuit (220) when the at least one battery (130) is identified to be connected to the second associated output (20).

9. The battery charger (100) according to any of claims 5 to 8, wherein the battery charger (100) is arranged to keep the voltage level at the first associated output (10) within a Safety Extra Low Voltage, SELV, level, when the at least one battery (130) is identified to be connected to the second associated output (20).

10. The battery charger (100) according to any of claims 5 to 7, wherein the charge control circuit (150) is arranged to use voltage feedback from the first secondary transformer circuit (210) when the at least one battery (130) is identified to be connected to the first associated output (10).

11. The battery charger (100) according to any of the previous claims, wherein the charging circuit (110) further comprises regulating means (140) and wherein said regulating means (140) is connected, and shared, between the first secondary transformer circuit (210) and at least one of the said at least one secondary transformer circuit (220).

12. The battery charger (100) according to claim 11, wherein said shared regulating means (140) is at least one of an output fuse, a safety output control relay and a current shunt.

13. The battery charger (100) according to any of the previous claims, wherein the battery charger (100) is based on AC/DC power conversion.

14. The battery charger (100) according to any of the previous claims, wherein the battery charger (100) is based on DC/DC power conversion.

15. The battery charger (100) according to any of the previous claims, wherein the battery charger (100) is arranged for use with re-chargeable lithium ion batteries.