Power converters and uninterruptible power suppy (ups) including the same

A power converter, comprising:

• a first power conversion module, comprising a first bridge arm and a second bridge arm, wherein a first terminal of the first power conversion module is configured to be capable of being electrically connected to a mains supply and/or a rechargeable battery, and a second terminal of the first power conversion module is configured to be capable of being electrically connected to a direct current bus;
• a second power conversion module, comprising a third bridge arm and a fourth bridge arm, wherein a first terminal of the second power conversion module is configured to be capable of being electrically connected to the mains supply and/or the rechargeable battery, and a second terminal of the second power conversion module is configured to be capable of being electrically connected to a direct current bus;
• and
• a switch module, configured to enable the first terminal of the first power conversion module and the first terminal of the second power conversion module to be selectively electrically connected to the mains supply and/or the rechargeable battery, wherein
• the first power conversion module, the second power conversion module, and the switch module are configured to charge the rechargeable battery from the direct current bus through the first bridge arm and the fourth bridge arm.