JP-2026075374-A - Hydrogen gas storage device

Abstract

[Problem] In a hydrogen gas storage system having multiple hydrogen tanks, we propose a technology to supply hydrogen gas to a hydrogen gas supply destination while suppressing the temperature drop of each hydrogen tank. [Solution] The hydrogen gas storage device includes a plurality of hydrogen tanks with on-off valves in the discharge channel, a hydrogen gas supply channel connected to the plurality of hydrogen tanks via the plurality of on-off valves and supplying hydrogen gas from the plurality of hydrogen tanks to an external hydrogen gas supply destination, a plurality of temperature sensors for detecting the temperature of the corresponding hydrogen tanks, and a control device. In the hydrogen gas supply operation, the control device opens some of the plurality of hydrogen tanks. Furthermore, if the temperature of an open hydrogen tank falls below a reference value, the control device closes the hydrogen tank whose temperature has fallen below the reference value and opens at least one of the closed hydrogen tanks. [Selection Diagram] Figure 1

Inventors

• 安永 幹生

Assignees

• トヨタ自動車株式会社

Dates

Publication Date

20260508

Application Date

20241022

Claims (2)

1. A hydrogen gas storage device, Multiple hydrogen tanks equipped with on/off valves in the discharge flow path, A hydrogen gas supply channel is connected to a plurality of hydrogen tanks via a plurality of on-off valves, and supplies hydrogen gas from the plurality of hydrogen tanks to an external hydrogen gas supply destination, Multiple temperature sensors for detecting the temperature of the corresponding hydrogen tank, Control device and Equipped with, In the hydrogen gas supply operation in which the control device supplies hydrogen gas to the hydrogen gas supply destination, - Open some of the hydrogen tanks among the multiple hydrogen tanks, - If the temperature of the open hydrogen tank falls below a reference value, the hydrogen tank whose temperature has fallen below the reference value is closed, and at least one of the closed hydrogen tanks is opened. A hydrogen gas storage device that controls each of the aforementioned on-off valves to satisfy the following conditions.
2. The hydrogen gas storage apparatus according to claim 1, wherein the control device opens at least one of the closed hydrogen tanks whose temperature is higher than the reference value when the temperature of the open hydrogen tank falls below the reference value.

Description

The technology disclosed herein relates to hydrogen gas storage devices. The hydrogen gas storage device disclosed in Patent Document 1 has multiple hydrogen tanks and hydrogen gas supply channels connected to the multiple hydrogen tanks. The hydrogen gas supply channels supply hydrogen gas from the multiple hydrogen tanks to a hydrogen gas supply destination. Japanese Patent Publication No. 2015-132350 This is a schematic diagram of a hydrogen gas supply system.This is a flowchart of the hydrogen gas supply operation.This is a diagram illustrating the situation in which hydrogen gas is supplied to a hydrogen gas recipient.This is a diagram illustrating the situation in which hydrogen gas is supplied to a hydrogen gas recipient. Following the above-described embodiment 1, additional configurations of the hydrogen gas storage apparatus disclosed herein will be described below. (Aspect 2) The hydrogen gas storage apparatus according to embodiment 1, wherein the control device opens at least one of the closed hydrogen tanks whose temperature is higher than the reference value when the temperature of the open hydrogen tank falls below the reference value. According to embodiment 2, it is possible to prevent deterioration of hydrogen tank components when the temperature inside the hydrogen tank is low. The hydrogen gas supply system 100 shown in Figure 1 comprises a hydrogen station 2, a hydrogen gas storage device 10, and a hydrogen gas supply destination 4. The hydrogen station 2 supplies hydrogen gas to the hydrogen gas storage device 10. The hydrogen gas storage device 10 stores the hydrogen gas supplied from the hydrogen station 2. The hydrogen gas storage device 10 also supplies hydrogen gas to the hydrogen gas supply destination 4. The hydrogen gas supply destination 4 is a device that consumes hydrogen gas. For example, the hydrogen gas supply destination 4 is a device powered by a fuel cell (e.g., a fuel cell vehicle). The hydrogen gas storage device 10 has multiple hydrogen tanks 20. Each hydrogen tank 20 stores hydrogen gas internally. The hydrogen gas storage device 10 has a hydrogen gas filling channel 12, a hydrogen gas filling channel connection section 14, and a plurality of hydrogen gas inflow channels 22. The upstream end of the hydrogen gas filling channel 12 is connected to the hydrogen station 2. The downstream end of the hydrogen gas filling channel 12 is connected to the hydrogen gas filling channel connection section 14. The upstream end of each hydrogen gas inflow channel 22 is connected to the hydrogen gas filling channel connection section 14. The downstream end of each hydrogen gas inflow channel 22 is connected to the corresponding hydrogen tank 20. Hydrogen gas discharged from the hydrogen station 2 is supplied to each hydrogen gas inflow channel 22 via the hydrogen gas filling channel 12 and the hydrogen gas filling channel connection section 14. The hydrogen gas that has passed through each hydrogen gas inflow channel 22 is supplied to the hydrogen tank 20. Each hydrogen gas inflow channel 22 is provided with a check valve 30. The check valve 30 prevents hydrogen gas from flowing from the hydrogen tank 20 toward the hydrogen gas filling channel connection section 14. A hydrogen gas pressure sensor 16 is provided at the hydrogen gas filling channel connection section 14. The hydrogen gas pressure sensor 16 detects the pressure of the hydrogen gas flowing through the hydrogen gas filling channel connection section 14. The hydrogen gas storage device 10 has multiple hydrogen gas discharge channels 24, a hydrogen gas supply channel connection section 40, and a hydrogen gas supply channel 44. The upstream end of each hydrogen gas discharge channel 24 is connected to the corresponding hydrogen tank 20. The downstream end of each hydrogen gas discharge channel 24 is connected to the hydrogen gas supply channel connection section 40. The upstream end of the hydrogen gas supply channel 44 is connected to the hydrogen gas supply channel connection section 40. The downstream end of the hydrogen gas supply channel 44 is connected to the hydrogen gas supply destination 4. Each hydrogen gas discharge channel 24 is provided with a check valve 32 and an on-off valve 34. The check valve 32 prevents hydrogen gas from flowing from the hydrogen gas supply channel connection section 40 toward the hydrogen tank 20. The on-off valve 34 is located in the hydrogen gas discharge channel 24, between the check valve 32 and the hydrogen tank 20. The on-off valve 34 is a solenoid valve that opens and closes the hydrogen gas discharge channel 24. When each on-off valve 34 opens, hydrogen gas flows from the corresponding hydrogen tank 20 into the hydrogen gas discharge channel 24. The hydrogen gas that has passed through the hydrogen gas discharge channel 24 flows to the hydrogen gas supply destination 4 via the hydrogen gas supply channel connection 40 and the hydrogen gas supply channel 44. A hydrogen gas pres