公开(公告)号：WO2022248002A1

公开(公告)日：2022-12-01

申请号：PCT/DK2022/050105

申请日：2022-05-24

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： ERIKSEN, Emil Haldrup ,  SANCAR, Ugur

IPC: H02J7/00 ,  G01R31/392 ,  H01M10/44

Abstract: A battery system comprising: a plurality of energy storage units that are connected together to define an energy storage circuit, wherein the energy storage circuit includes a switching system such that each of the plurality of energy storage units can be selectively connected into or bypassed out of the energy storage circuit, and a controller configured to control the switching system. The controller is configured to select at least one of the plurality of energy storage units for State of Health (SoH) determination, control the switching status of the selected energy storage unit to apply a discharge cycle thereto, by: connecting the selected energy storage unit into the energy storage circuit during a discharge cycle of the energy storage circuit, and bypassing the selected energy storage unit out of the energy storage circuit during a charge cycle of the energy storage circuit, thereby applying a discharge cycle to the selected energy storage unit to discharge the selected energy storage unit to a first predetermined charge level. The controller is further configured to calculate the SOH of the selected energy storage unit based on the energy flow therethrough during the discharge cycle. The invention also extends to a method of controlling a battery system, as defined above. Beneficially, the SOH analysis for the energy storage units, whether they are individual cells or a collection of cells defining a cell module, can be carried out online, namely, whilst the battery system is fully operational and following a so-called mission profile where it is being charged and discharged on the basis of operational requirements.

公开(公告)号：WO2022048724A1

公开(公告)日：2022-03-10

申请号：PCT/DK2021/050274

申请日：2021-09-06

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： RAGHUCHANDRA, Karthikeya Balladi ,  REZKALLA, Michel Maher Naguib ,  SANCAR, Ugur ,  CHRISTENSEN, Lars Chr.

IPC: H01M10/617 ,  H01M10/627 ,  H01M10/6563 ,  H01M10/6571 ,  H01M10/663

Abstract: The invention relates to a temperature control method for a grid (G) connected battery storage system (100), the battery storage system comprises one or more battery modules (110) situated in a container (120), an air conditioning unit (AC), at least one heater (140) and at least two temperature sensors (150) arranged at different locations in the container, the method comprises obtaining temperatures from the at least two temperature sensors (150), and controlling the at least one heater to generate heat based on the obtained temperatures for reducing a temperature difference (ΔT) between the obtained temperatures.

公开(公告)号：EP4348798A1

公开(公告)日：2024-04-10

申请号：EP22729031.9

申请日：2022-05-24

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： ERIKSEN, Emil Haldrup ,  SANCAR, Ugur

IPC: H02J7/00 ,  G01R31/392 ,  H01M10/44

公开(公告)号：EP4208909A1

公开(公告)日：2023-07-12

申请号：EP21772674.4

申请日：2021-09-06

Applicant: VESTAS WIND SYSTEMS A/S

Inventor： RAGHUCHANDRA, Karthikeya Balladi ,  REZKALLA, Michel Maher Naguib ,  SANCAR, Ugur ,  CHRISTENSEN, Lars Chr.

IPC: H01M10/617 ,  H01M10/627 ,  H01M10/6563 ,  H01M10/6571 ,  H01M10/663