energy storage system
By using a gas generator and gas container to provide nitrogen or helium to replace the humid gas inside the energy storage cabinet, combined with control valves and fans, the problem of moisture ingress caused by weak sealing of the energy storage cabinet is solved, achieving efficient dehumidification and rapid fire response, and improving the safety and reliability of the energy storage system.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BYD CO LTD
- Filing Date
- 2025-04-18
- Publication Date
- 2026-06-09
AI Technical Summary
Weak points in the sealing of the energy storage cabinet allow external moisture to enter, affecting the safety of the battery module. Existing dehumidification effects are poor and fire protection performance is insufficient.
A gas generator and gas container are used to provide dry nitrogen or helium to replace the humid gas inside the cabinet. Combined with control valves and fans, a slightly positive pressure environment is achieved, which reduces the oxygen concentration and responds quickly to thermal runaway, thereby enhancing dehumidification and fire protection effects.
It improves the dehumidification effect and fire safety of the energy storage system, reduces the risk of water vapor corrosion, and enhances the safety and reliability of the battery module.
Smart Images
Figure CN224342403U_ABST
Abstract
Claims
1. An energy storage system, characterized in that, include: At least one energy storage device (100) includes a cabinet (110) and a plurality of battery cells, all of which are disposed within the cabinet (110). The cabinet (110) has a communication port (111) configured to allow the introduction of dehumidifying gas for dehumidification.
2. The energy storage system according to claim 1, characterized in that, It also includes a dehumidifier (200) connected to the communication port (111) and configured to provide dehumidifying gas.
3. The energy storage system according to claim 2, characterized in that, The dehumidification device (200) is configured to introduce nitrogen or helium into the communication port (111).
4. The energy storage system according to claim 2 or 3, characterized in that, The dehumidification device (200) includes a gas generator (210) connected to the communication port (111), and the gas generator (210) is configured to provide dehumidifying gas to the cabinet (110). And / or, the dehumidification device (200) includes a gas container (220) connected to the communication port (111), the gas container (220) being configured to supply dehumidifying gas to the cabinet (110).
5. The energy storage system according to claim 4, characterized in that, The dehumidification device (200) further includes a first control valve (230), to which both the gas generator (210) and the gas container (220) are connected. The first control valve (230) is connected to the communication port (111), and the first control valve (230) is configured to control at least one of the gas generator (210) and the gas container (220) to supply dehumidifying gas to the cabinet (110).
6. The energy storage system according to claim 5, characterized in that, The gas container (220) is connected to the gas generator (210) via the first control valve (230), and the first control valve (230) is also configured to control the gas generator (210) to supply dehumidified gas to the gas container (220).
7. The energy storage system according to claim 6, characterized in that, The first control valve (230) has a first inlet, a second inlet, a first outlet and a second outlet, the gas generator (210) has a first outlet, and the gas container (220) has a second outlet and a gas supply port; The first air outlet is connected to the first inlet, the second air outlet is connected to the second inlet, the first outlet is connected to the air replenishment port, and the second outlet is connected to the communication port (111).
8. The energy storage system according to any one of claims 5-7, characterized in that, It also includes a second control valve (300) and a fire-fighting device (400) configured to provide a fire-fighting medium, the fire-fighting medium including at least one of fire-fighting water and fire-fighting agent; The fire-fighting equipment (400) and the first control valve (230) are both connected to the second control valve (300), the second control valve (300) is connected to the communication port (111), and the second control valve (300) is configured to control at least one of the fire-fighting equipment (400) and the first control valve (230) to communicate with the communication port (111).
9. The energy storage system according to claim 8, characterized in that, The fire-fighting equipment (400) includes a first container (410) and / or a second container (420), the first container (410) being configured to store the fire-fighting agent and the second container (420) being configured to store the fire-fighting water.
10. The energy storage system according to claim 9, characterized in that, The second control valve (300) has a third inlet, a fourth inlet, a fifth inlet and a third outlet, the first control valve (230) is connected to the third inlet, the first container (410) is connected to the fourth inlet, the second container (420) is connected to the fifth inlet and the third outlet is connected to the communication port (111).
11. The energy storage system according to claim 8, characterized in that, It also includes a pressure booster (500) disposed between the second control valve (300) and the communication port (111).
12. The energy storage system according to claim 6 or 7, characterized in that, The energy storage device (100) further includes a first detection component, which is at least disposed inside the cabinet (110) and configured to detect the humidity inside the cabinet (110).
13. The energy storage system according to claim 8, characterized in that, The energy storage device (100) also includes at least one fan (120), which is connected to the side wall of the cabinet (110).
14. The energy storage system according to claim 13, characterized in that, The fan (120) includes a first fan (121) and a second fan (122), the first fan (121) being located above the second fan (122), the first fan (121) being configured to drive the gas inside the cabinet (110) to flow out of the cabinet (110), and the second fan (122) being configured to drive the gas outside the cabinet (110) to flow into the cabinet (110).
15. The energy storage system according to claim 13, characterized in that, The energy storage device (100) further includes a second detection component disposed in the cabinet (110) and configured to detect the temperature inside the cabinet (110); And / or, the energy storage device (100) further includes a third detection component disposed in the cabinet (110) and configured to detect the concentration of hazardous gases within the cabinet (110).
16. The energy storage system according to any one of claims 5-7, characterized in that, It also includes a third control valve (600), and the number of energy storage devices (100) is at least two, each of the energy storage devices (100) being connected to the third control valve (600), the third control valve (600) being connected to the first control valve (230), and the third control valve (600) being configured to control the on / off state between the first control valve (230) and each of the communication ports (111).
17. The energy storage system according to claim 12, characterized in that, The gas generator (210) is configured to introduce dehumidifying gas into the communication port (111) when the first detection component detects that the humidity H inside the cabinet (110) satisfies: H1≤H<H2; Alternatively, the gas generator (210) and the gas container (220) are configured to simultaneously introduce dehumidifying gas into the communication port (111) when the first detection component detects that the humidity H inside the cabinet (110) satisfies: H≥H2.
18. The energy storage system according to claim 15, characterized in that, The dehumidification device (200) is configured to introduce dehumidifying gas into the communication port (111) when the second detection component detects that the temperature T inside the cabinet (110) satisfies: T1≤T<T2; And / or, the dehumidification device (200) is configured to introduce dehumidification gas into the communication port (111) when the concentration G of the hazardous gas inside the cabinet (110) is detected by the third detection component to satisfy: G1≤G<G2.
19. The energy storage system according to claim 18, characterized in that, The dehumidification device (200) is configured to introduce dehumidifying gas into the communication port (111) when the second detection component detects that the temperature T inside the cabinet (110) satisfies: T2≤T<T3; the fire-fighting device (400) is configured to provide fire-fighting medium into the communication port (111) when the second detection component detects that the temperature T inside the cabinet (110) satisfies: T2≤T<T3; the fan (120) is configured to drive the gas inside the cabinet (110) to be discharged outside the cabinet (110) when the second detection component detects that the temperature T inside the cabinet (110) satisfies: T2≤T<T3. And / or, the dehumidification device (200) is configured to introduce dehumidification gas into the connection port (111) when the concentration G of the hazardous gas inside the cabinet (110) is detected by the third detection component to satisfy: G2≤G<G3; the fire-fighting device (400) is configured to provide fire-fighting medium to the connection port (111) when the concentration G of the hazardous gas inside the cabinet (110) is detected by the third detection component to satisfy: G2≤G<G3; the fan (120) is configured to drive the gas inside the cabinet (110) to be discharged outside the cabinet (110) when the concentration G of the hazardous gas inside the cabinet (110) is detected by the third detection component to satisfy: G2≤G<G3.
20. The energy storage system according to claim 19, characterized in that, The dehumidification device (200) is configured to introduce dehumidifying gas into the communication port (111) when the second detection component detects that the temperature T inside the cabinet (110) satisfies: T≥T3; the fire-fighting device (400) is configured to provide fire-fighting medium into the communication port (111) when the second detection component detects that the temperature T inside the cabinet (110) satisfies: T≥T3; the fan (120) is configured to drive the gas inside the cabinet (110) to be discharged outside the cabinet (110) and drive the dehumidifying gas to circulate inside the cabinet (110) when the second detection component detects that the temperature T inside the cabinet (110) satisfies: T≥T3. And / or, the dehumidification device (200) is configured to introduce dehumidifying gas into the connection port (111) when the concentration G of the hazardous gas inside the cabinet (110) is detected by the third detection component to satisfy: G≥G3; the fire-fighting device (400) is configured to provide fire-fighting medium to the connection port (111) when the concentration G of the hazardous gas inside the cabinet (110) is detected by the third detection component to satisfy: G≥G3; the fan (120) is configured to drive the gas inside the cabinet (110) to be discharged outside the cabinet (110) and drive the dehumidifying gas to circulate inside the cabinet (110) when the concentration G of the hazardous gas inside the cabinet (110) is detected by the third detection component to satisfy: G≥G3.