Electrolyte reservoir

Abstract

The application provides an electrolyte storage tank, comprising a tank body, the inside of the tank body being suitable for storing tank electrolyte and backflow electrolyte in an electric pile; a jet circulation device, the jet circulation device comprising a backflow pipe in communication with the tank body, one or more liquid outlet pipes in communication with the backflow pipe, and a nozzle in communication with at least one liquid outlet pipe, wherein the nozzle comprises a backflow inlet, a backflow outlet, a jetting port and a jetting outlet, the liquid outlet pipe is in communication with the backflow inlet, and the backflow electrolyte inside the liquid outlet pipe is suitable for being jetted out of the nozzle after sequentially passing through the backflow inlet, the backflow outlet, the jetting port and the jetting outlet, wherein the inner diameter of the backflow inlet is larger than the inner diameter of the backflow outlet, and the inner diameter of the jetting outlet is larger than the inner diameter of the jetting port. The electrolyte storage tank provided by the application can realize rapid and uniform mixing of large-capacity electrolyte in the tank, and can further improve the operation efficiency and safety of the battery.

Claims

1. An electrolyte storage tank, characterized in that, include: The storage tank body is adapted to store the storage tank electrolyte and the return electrolyte in the fuel cell stack. A spray circulation device, comprising a return pipe connected to the tank body, one or more outlet pipes connected to the return pipe, and a nozzle connected to at least one of the outlet pipes, wherein... The nozzle includes a return liquid inlet, a return liquid outlet, a spray nozzle, and a spray outlet. The outlet pipe is connected to the return liquid inlet, and the refluxed electrolyte inside the outlet pipe is adapted to pass sequentially through the return liquid inlet, the return liquid outlet, the spray nozzle, and the spray outlet before being sprayed out of the nozzle. Wherein, the inner diameter of the return liquid inlet is larger than the inner diameter of the return liquid outlet, and the inner diameter of the spray outlet is larger than the inner diameter of the spray nozzle.

2. The electrolyte storage tank as described in claim 1, characterized in that, The spray circulation device further includes one or more baffles, which are fixedly connected to the inner wall of the tank body, and the reflux electrolyte is sprayed from the spray outlet onto the baffles.

3. The electrolyte storage tank as described in claim 2, characterized in that, The distance between the nozzle and the baffle is a first distance, and the ratio of the first distance to the inner diameter of the nozzle is in the range of 3 to 8; and / or, The distance between the baffle and the inner wall of the storage tank body is the second distance, and the range of the second distance includes 25mm~35mm.

4. The electrolyte storage tank as described in claim 2, characterized in that, The shape of the baffle includes a flat plate and / or a U-shape, and the ratio of the projected area of ​​the baffle on the inner wall of the tank body to the total area of ​​the bottom of the tank body is in the range of 0.025 to 0.

065.

5. The electrolyte storage tank as described in claim 1, characterized in that, The nozzle includes a reflux section and a reflux annular plate. The reflux annular plate is located inside the reflux section. The reflux section includes a reflux section inlet, and the reflux liquid inlet and the reflux liquid outlet are located at both ends of the reflux annular plate.

6. The electrolyte storage tank as described in claim 5, characterized in that, The ratio of the inner diameter of the return liquid inlet to the inner diameter of the reflux section inlet is in the range of 0.9 to 1; the ratio of the inner diameter of the return liquid outlet to the inner diameter of the reflux section inlet is in the range of 0.3 to 0.

6.

7. The electrolyte storage tank as described in claim 5, characterized in that, The reflux section is provided with a side suction port, and a reflux space is included between the outer wall of the reflux ring plate and the inner wall of the reflux section. The electrolyte in the tank body is adapted to enter the reflux space through the side suction port.

8. The electrolyte storage tank as described in claim 7, characterized in that, The nozzle further includes a transition section and a spray section. The transition section is located between the recirculation section and the spray section. The spray section includes a spray nozzle and a spray outlet at both ends. The spray nozzle is located on the side of the spray section closer to the transition section.

9. The electrolyte storage tank as described in claim 8, characterized in that, The injection section includes a mixing space located between the spray outlet and the spray port. The electrolyte in the storage tank flows through the transition section and then enters the mixing space to mix with the reflux electrolyte.

10. The electrolyte storage tank as described in claim 1, characterized in that, The storage tank electrolyte and the reflux electrolyte include vanadium electrolyte.

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