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CN-224203989-U - Fusion switch, high-voltage box and battery energy storage system

CN224203989UCN 224203989 UCN224203989 UCN 224203989UCN-224203989-U

Abstract

Embodiments of the present disclosure provide a fusion switch, a high voltage box, and a battery energy storage system. The fusion switch comprises a main switch, a circuit board, a controller and a switch control circuit, wherein the main switch is suitable for being coupled between a battery cluster and an energy storage converter, the main switch is provided with a switching-on state for conducting a loop between the battery cluster and the energy storage converter and a switching-off state for disconnecting the loop between the battery cluster and the energy storage converter, the controller is arranged on the circuit board and comprises a cluster-level battery management system suitable for controlling the battery cluster, the controller is suitable for being electrically connected with the energy storage converter and is suitable for sending a switching-off signal, and the switch control circuit is arranged on the circuit board and is electrically connected with the controller, and is suitable for controlling the main switch to execute switching-off operation or switching-on operation based on the switching-off signal from the controller.

Inventors

  • ZHAO CHAOMIN
  • CHEN GUANGXI
  • SHI ZUOHUI

Assignees

  • 施耐德电气工业公司

Dates

Publication Date
20260505
Application Date
20250527

Claims (10)

  1. 1. A fusion switch (100), comprising: -a main switch (11) adapted to be coupled between a battery cluster (200) and an energy storage converter (300), the main switch (11) having a closed state in which a loop (13) between the battery cluster (200) and the energy storage converter (300) is conductive and an open state in which the loop (13) between the battery cluster (200) and the energy storage converter (300) is disconnected; a circuit board (20); A controller (30) disposed on the circuit board (20) and including a cluster-level battery management system adapted to control the battery clusters (200), the controller (30) being adapted to be electrically connected to the energy storage converter (300) and to issue an on/off signal, and And a switch control circuit (40) disposed on the circuit board (20) and electrically connected to the controller (30), the switch control circuit (40) being adapted to control the main switch (11) to perform a switching-off operation or a switching-on operation based on the switching-on/off signal from the controller (30).
  2. 2. The fusion switch (100) of claim 1, wherein the fusion switch (100) further comprises a detection circuit disposed on the circuit board (20) and electrically connected to the controller (30) to send at least one of voltage information of the battery cluster (200), voltage information of the energy storage converter (300), current information of the loop (13), contact temperature information of the main switch (11), insulation information of the fusion switch to the controller (30).
  3. 3. The fusion switch (100) of claim 2, wherein the controller (30) includes a first controller (31) and a second controller (32) disposed on the circuit board (20), and Wherein the first controller (31) includes the cluster-level battery management system, The second controller (32) is adapted to receive at least one of voltage information of the battery cluster (200), voltage information of the energy storage converter (300), current information of the loop (13), contact temperature information of the main switch (11), insulation information of the fusion switch, The first controller (31) is electrically connected with the second controller (32).
  4. 4. A fusion switch (100) according to claim 2 or 3, characterized in that, The fusion switch (100) further comprises a current sensing element (512) disposed adjacent to the loop (13), and The detection circuit includes a current detection circuit (51), the current detection circuit (51) being electrically connected to the current detection element (512) to send current information of the loop (13) detected by the current detection element (512) to the controller (30).
  5. 5. A fusion switch (100) according to claim 2 or 3, wherein the detection circuit further comprises: A first voltage detection circuit adapted to be electrically connected to a portion of the loop (13) between the main switch (11) and the battery cluster (200) for transmitting voltage information of the battery cluster (200) to the controller (30), and A second voltage detection circuit adapted to be electrically connected to a portion of the loop (13) between the main switch (11) and the energy storage converter (300) for sending voltage information of the energy storage converter (300) to the controller (30).
  6. 6. A fusion switch (100) according to claim 2 or 3, wherein the detection circuit further comprises at least one of: -a temperature detection circuit (53), the temperature detection circuit (53) being adapted to send contact temperature information of the main switch (11) to the controller (30); -an insulation detection circuit (54), the insulation detection circuit (54) being adapted to send insulation information of the fusion switch to the controller (30).
  7. 7. A fusion switch (100) according to any one of claims 1 to 3, characterized in that, The fusion switch (100) further comprises a motor (15) positioned outside the circuit board (20), the motor (15) is connected with the main switch (11) to drive the main switch (11) to perform opening and closing operations, the switch control circuit (40) comprises a driver (41), and the driver (41) controls the motor (15) to rotate when receiving the opening and closing signals, or The fusion switch (100) further comprises an electromagnet positioned outside the circuit board (20), the switching-off operation or the switching-on operation of the main switch (11) is driven by the electromagnet, and the switch control circuit (40) controls the electrified state of the coil of the electromagnet to be switched when receiving the switching-off signal.
  8. 8. A fusion switch (100) according to any one of claims 1 to 3, further comprising a pre-charge switch (12) coupled with the loop (13).
  9. 9. A high voltage cartridge, characterized in that it comprises a fusion switch (100) according to any one of claims 1 to 8.
  10. 10. A battery energy storage system, characterized by comprising the battery cluster (200), the energy storage converter (300) and the fusion switch (100) according to any of claims 1 to 8, The controller (30) is electrically connected with the energy storage converter (300) through an interface (60) on the circuit board, and the controller (30) outputs an opening and closing signal to the switch control circuit (40) when receiving the opening and closing signal of the energy storage converter (300).

Description

Fusion switch, high-voltage box and battery energy storage system Technical Field Embodiments of the present disclosure relate to the technical field of energy storage systems, and more particularly, to a fusion switch, a high voltage box, and a battery energy storage system. Background The battery energy storage system comprises a battery cluster, a high-voltage box, a PCS (Power Conversion System, an energy storage converter), an EMS (ENERGY MANAGEMENT SYSTEM, an energy management system) and the like, and can store redundant electric energy of a power grid into the battery cluster and release the energy stored by the battery cluster to the power grid in the form of electric energy when needed. The high-voltage box is connected between the battery cluster and the energy storage converter, and a BCU (Battery Cluster Unit, a battery cluster management unit) and a fusion switch are arranged on the high-voltage box. The BCU comprises a plurality of battery pack battery management systems, wherein each battery pack battery management system is used for collecting and processing the performance parameters of the corresponding single batteries, and each battery pack battery management system is used for collecting and processing the performance parameters of the corresponding single batteries. The controller may also receive and process information for other electrical components outside of the battery cluster. The fusion switch comprises a circuit board and mechanical components such as a main switch, wherein a switch control circuit for controlling the main switch to perform switching-off operation or switching-on operation is arranged on the circuit board. The main switch is coupled on the passageway between battery cluster and the energy storage converter, and when main switch closed, the passageway between battery cluster and the energy storage converter is switched on steadily, and when main switch separating brake, the passageway between battery cluster and the energy storage converter is reliably disconnected. The controller of the BCU may be electrically connected to the PCS and EMS and may be electrically connected to the switch control circuit of the fusion switch. The BCU may send an opening and closing signal to the switch control circuit based on detecting an abnormal state of the battery cluster or upon receiving a control signal of the PCS or EMS to cause the switch control circuit to control the main switch to perform an opening or closing operation. Disclosure of utility model In a first aspect of the present disclosure, a fusion switch is provided, comprising a main switch adapted to be coupled between a battery cluster and an energy storage converter, the main switch having a closed state in which a loop between the battery cluster and the energy storage converter is conductive and an open state in which the loop between the battery cluster and the energy storage converter is disconnected, a circuit board, a controller disposed on the circuit board and including a cluster-level battery management system adapted to control the battery cluster, the controller being adapted to be electrically connected to the energy storage converter and adapted to issue an open-close signal, and a switch control circuit disposed on the circuit board and electrically connected to the controller, the switch control circuit being adapted to control the main switch to perform an open-close operation or a close-close operation based on the open-close signal from the controller. In some embodiments, the fusion switch further comprises a detection circuit arranged on the circuit board and electrically connected with the controller to send at least one of voltage information of the battery cluster, voltage information of the energy storage converter, current information of the loop, contact temperature information of the main switch and insulation information of the fusion switch to the controller. In some embodiments, the controller comprises a first controller and a second controller disposed on the circuit board, and wherein the first controller comprises a cluster-level battery management system, and the second controller is adapted to receive at least one of voltage information of the battery cluster, voltage information of the energy storage converter, current information of the loop, contact temperature information of the main switch, insulation information of the fusion switch, the first controller being electrically connected to the second controller. In some embodiments, the fusion switch further includes a current sensing element disposed adjacent the loop, and the sensing circuit includes a current sensing circuit electrically connected to the current sensing element to send current information of the loop sensed by the current sensing element to the controller. In some embodiments, the detection circuit further comprises a first voltage detection circuit adapted to electrically connect with a portion of th