1. BYD: The company's energy storage power station with lithium iron phosphate battery technology as the core has obvious advantages in terms of cost and operating life compared with the existing energy storage technologies such as pumped storage and compressed air storage. In 2020, the company achieved a total revenue of 654.38+056.6 billion yuan, a year-on-year increase of 22.59%; Realized a gross profit of 30.35 billion yuan, with a gross profit margin of 65,438+09.38%; The operating cash flow per share is 16.6387 yuan.
2. Establish research institutes: single well circulating shallow geothermal energy technology, underground compressed air energy storage technology, underground carbon dioxide energy storage technology, underground pumped storage technology, coal mine energy comprehensive management technology, gas extraction power generation technology, intelligent charging pile application technology, etc. In 2020, the company achieved a total revenue of 65.438+88.6 million yuan, a year-on-year increase of 65.438+09.45%; Realized a gross profit of 778 million and a gross profit margin of 465,438+0.26%; The operating cash flow per share is 1. 1907 yuan.
3. Jintongling: Jiangsu Jintongling Hydrogen Machine Technology, a wholly-owned subsidiary, is engaged in the research and development of hydrogen fuel cell compressors and hydrogen standby emergency power supply, and signed the Cooperation Framework Agreement for Hydrogen Energy Industry Investment Projects with Rugao Economic and Technological Development Zone to invest in fuel cell air compressors and hydrogen standby power supply research and development, smart energy island, hydrogen refueling station, biomass hydrogen production base, compressed air station and other projects; 1999 signed a contract with CELEROTONAG Company of Switzerland, and both parties decided to jointly develop hydrogen fuel cell compressors (including compressors, motors and frequency conversion controllers). In 2020, the company achieved a total revenue of 65.438+0.436 billion, a year-on-year increase of-23.63%; Realized a gross profit of 338.2 million and a gross profit margin of 23.55%; Operating cash flow per share -0.0374 yuan.
Extended information:
1. compressed air, that is, air compressed by external force. Air is compressible, and the air whose volume is reduced and pressure is increased by the mechanical work of the air compressor is called compressed air. Compressed air is an important power source. Compared with other energy sources, it has the following obvious characteristics: clear and transparent, convenient transportation, no special harmful performance, no fire danger, no fear of overload, and it can work in various unfavorable environments. Air is everywhere and inexhaustible on the ground.
2. Air occupies a certain space, but it has no fixed shape and volume. When the pressure acts on the air in the closed container, the volume of the air is compressed and the internal pressure increases. When the external force is removed, the air will return to its original volume under the action of internal pressure. If there is a movable object in the container, when the air returns to its original volume, the object will be pushed out by the pressure of the air in the container. This principle is widely used in production and life. For example, injecting compressed air into the ball, the more air, the harder the ball; Compressed air is injected into the tire, and the tire can bear a certain weight. For large cars, use compressed air to open and close the doors and brakes; The hydraulic press uses compressed air to pressurize the water. In the factory, compressed air is used to start the air hammer to strike iron. In coal mine, it can start pneumatic pick drilling. It is also used for pipeline transportation of liquid and granular objects.