Electrolyte solution tank for redox flow battery and redox flow battery system
AssigneeDenso Corporation
InventorAtsushi Nakajima
Life of this patent
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Abstract
An electrolyte solution tank has a tank body, an electrolyte solution supply part, and electrolyte solution drain part and a flow guide mechanism. The electrolyte solution supply part supplies the electrolyte solution into an interior chamber in the tank body. The electrolyte solution is drained from the tank body to the outside of the tank through the electrolyte solution drain part. The flow guide mechanism is arranged in the interior chamber of the tank body. The flow guide mechanism guides the flow of the electrolyte solution in the interior chamber to the electrolyte solution drain part along a vertically downward direction.
Claims10
A redox flow battery system comprising:
- an electrolyte solution tank configured to store electrolyte solution to be supplied into and circulated through a redox flow type battery cell, the electrolyte solution tank comprising:
- a tank body having an interior chamber configured to store electrolyte solution;
- an electrolyte solution supply part configured to supply fresh electrolyte solution into the tank body;
- an electrolyte solution drain part configured to perform draining of used electrolyte solution stored in the tank body from the tank body;
- and
- a flow guide mechanism arranged in the interior chamber of the tank body, and configured to:
- guide the fresh electrolyte solution supplied from the electrolyte solution supply part in a vertically downward direction in the interior chamber of the tank body, and
- guide the used electrolyte solution stored in the tank body to the electrolyte solution drain part,
- wherein the tank body is structured so that the used electrolyte solution and the fresh electrolyte solution are in fluid communication with each other, and
- wherein the electrolyte solution tank is configured such that a reduced pressure generated by the draining of the used electrolyte solution stored in the tank body causes the fresh electrolyte solution supplied from the electrolyte solution supply part to be introduced into the tank body;
- a redox flow type battery cell;
- a circulation mechanism configured to supply the electrolyte solution stored in the electrolyte solution tank to the redox flow type battery cell so as to circulate the electrolyte solution in the redox flow type battery cell;
- and
- a suction and drain part including a pump configured to suck electrolyte solution stored in the electrolyte solution tank and a drain connected to the pump, the drain provided to drain the sucked electrolyte solution to an outside of the redox flow battery system,
- wherein when the interior chamber in the tank body enters a reduced pressure state generated by the draining of the used electrolyte solution stored in the tank body, a valve opens so as to introduce the fresh electrolyte solution into the tank body.
Dependencies are inferred from the claim text.