Energy storage device
Patent Information
- Authority / Receiving Office
- TW · TW
- Patent Type
- Patents
- Current Assignee / Owner
- APH EPOWER CO LTD
- Filing Date
- 2024-12-24
- Publication Date
- 2026-08-01
Smart Images
Figure TWG2TB001903727_001 
Figure TWG2TB001903727_002 
Figure TWG2TB001903727_003
Abstract
Claims
1. An energy storage device, comprising: A power bus; First battery module; A second battery module; A first charging / discharging circuit, coupled to the first battery module and the power bus, configured to receive electrical energy located on the power bus and a first battery state of the first battery module to provide a first sensing signal; a second charging / discharging circuit, coupled to the second battery module and the power bus, configured to receive electrical energy located on the power bus and a second battery state of the second battery module to provide a second sensing signal; and a control circuit, communicatively connected to the first charging / discharging circuit and the second charging / discharging circuit, configured to control the first charging / discharging circuit to perform a first power transfer operation on the first battery module and control the second charging / discharging circuit to perform a second power transfer operation on the second battery module based on the first sensing signal and the second sensing signal, wherein the first charging / discharging circuit includes: a first sensor, coupled to the first battery module and the control circuit, configured to sense at least one of the voltage value, current value, and temperature of the first battery module; A second sensor, coupled to the power bus and the control circuit, is configured to sense at least one of the voltage and current values located on the power bus to generate a power bus sensing signal of the first sensing signal, and to provide the power bus sensing signal to the control circuit.
2. The energy storage device as claimed in claim 1, wherein the control circuit determines whether the power bus receives an external power source based on at least one of the first sensing signal and the second sensing signal.
3. The energy storage device as claimed in claim 2, wherein when the power bus receives the external power: the first charge / discharge circuit uses the external power to charge the first battery module, and the second charge / discharge circuit uses the external power to charge the second battery module.
4. The energy storage device as claimed in claim 2, wherein the charge / discharge rate of the first battery module is higher than that of the second battery module.
5. The energy storage device as claimed in claim 4, wherein the energy density of the second battery module is higher than the energy density of the first battery module.
6. The energy storage device as claimed in claim 4, wherein when the power bus does not receive the external power, the first charging and discharging circuit preferentially uses the power energy of a first battery of the first battery module to supply power to the power bus.
7. The energy storage device as claimed in claim 6, wherein when the first battery module is low on power, the second charging and discharging circuit uses a second battery power from the second battery module to supply power to the power bus.
8. The energy storage device as claimed in claim 2, wherein when a load coupled to the power bus is in standby mode and the power bus does not receive the external power, the first charge / discharge circuit and the second charge / discharge circuit cause one of the first battery module and the second battery module to charge the other of the first battery module and the second battery module.
9. The energy storage device as claimed in claim 2, wherein when the power bus does not receive the external power and the power demand of a load coupled to the power bus is greater than a set power: the first charge-discharge circuit supplies power to the load using a first battery power of the first battery module, and the second charge-discharge circuit supplies power to the load using a second battery power of the second battery module.
10. The energy storage device as claimed in claim 2, wherein when the power bus is coupled between a load and an external load: the first charge-discharge circuit supplies power to the external power source using a first battery power source of the first battery module, and the second charge-discharge circuit supplies power to the external power source using a second battery power source of the second battery module.
11. The energy storage device as claimed in claim 10, further comprising: A control switch is coupled between the load and the power bus, wherein when the power bus is coupled between the load and the external load, the control circuit disconnects the control switch.
12. The energy storage device as claimed in claim 2, wherein when the power bus is coupled to a load and the external power supply experiences an overvoltage or overcurrent anomaly, the control circuit disconnects the power bus to disconnect the load from the external power supply and controls the first charge / discharge circuit to store electrical energy from the external power supply into the first battery module.
13. The energy storage device as claimed in claim 1, wherein the first charging and discharging circuit further comprises: A bidirectional power conversion circuit is coupled to the first battery module, the power bus, and the control circuit. It is configured to respond to a first control in the control circuit to supply power to the power bus using a first battery power from the first battery module, and to respond to a second control in the control circuit to charge the first battery module using power located on the power bus.