Vacuum welded water cooling plate, as the most popular production technology in the industry, our company’s previous years of research and development practice, unite a number of partners with strong strengths in different fields, and jointly provide large-scale water-cooling and small-scale internal-circulation water-cooling for the new energy industry The one-stop service of research, production, and sales adopts different processing techniques for different application scenarios: lead-free welding, epoxy welding, stirring welding, vacuum welding and other technologies to provide customers with rapid heat dissipation solutions.
The application range of water-cooling plates is very wide. In recent years, with the development of water-cooling heat dissipation technology, the use rate of water-cooling plates is higher, gradually replacing some of the original natural cooling and forced air cooling products. In the field of new energy, water cooling is used for the heat dissipation of photovoltaic power inverters, the heat dissipation of wind power converters, and the heat dissipation of electric vehicle power battery packs. The design of water cooling panels is also varied, and the water channel design of water cooling panels is also Different.
The water-cooled plate structure of a new energy vehicle is characterized by comprising a substrate and a cover plate connected to the substrate; one side of the substrate is also connected with a thermally conductive silicone pad; a circulation groove is formed between the substrate and the cover plate, and the substrate The left and right ends are respectively provided with a water inlet and a water outlet, and the water inlet and the water outlet are respectively connected to the circulation groove, and new energy is an important manifestation of green energy. Automobile, as an important carrier for the promotion of new energy. In the process of energy conversion and transmission, a large amount of heat energy will inevitably be generated. Whether in the photovoltaic industry or in the process of electric vehicle charging, a large amount of heat energy will be generated in a short period of time. If this heat energy cannot be dissipated in time, it will Bring uncontrollable factors to the life and stability of the equipment.
Summary of simulation data for the cooling solution of power battery pack water cooling plate:
(1) Cooling medium: 50% ethylene glycol 50% water, flow rate 10L/min, 25C;
(2) The outlet water temperature is 27.3 degrees, and the water cooling temperature difference is 2.3C;
(3) The maximum temperature of the heat sink is 29.3C;
(4) #1 differential pressure 19200Pa, #2 differential pressure 19700Pa, #3 differential pressure 4300Pa;
(5) The overall pressure difference of the module is: 19200*2+19700*2+4300=82100Pa
New energy vehicles are projects supported by the state. In recent years, they have developed rapidly. The vehicle technology and component technologies of electric vehicles are constantly innovating, and new technologies and new processes are constantly being introduced. The field of heat dissipation is no exception. The key point of the heat dissipation of electric vehicles is the heat dissipation of the electric battery pack and the controller. Doing a good job of the two pieces of heat dissipation is also a necessary guarantee for the stable operation of electric vehicles. The heat dissipation of the electric battery pack and the controller is also the focus of Winshare Thermal’s key research, and it has strengthened its investment in the design of electric vehicle water cooling plates.
The power batteries of electric vehicles generally include cylindrical batteries, square batteries, and soft-pack batteries. Different types of batteries use different heat dissipation design schemes. Winshare Thermal Energy has also studied the heat dissipation of these types of batteries and put forward many suggestions. There are two kinds of heat dissipation solutions, including flat-plate water-cooling heat-dissipation scheme, serpentine-tube water-cooling plate heat-dissipation scheme, and slot-type water-cooling heat dissipation scheme. Through thermal design and thermal simulation, the data meets heat dissipation design standards. Winshare has further cooperated with many new energy vehicle manufacturers to deepen R&D cooperation in the field of new energy vehicle heat dissipation. It has provided BYD, Geely, Chery and other manufacturers with complete or partial heat dissipation design solutions and heat dissipation products through in-depth cooperation , Winshare has accumulated a wealth of electric vehicle cooling technology and design data,
For such industries with high heat dissipation requirements, conventional modules and air-cooled design concepts can no longer meet the needs of the industry. Therefore, the use of water-cooled plates is naturally recognized by the industry. Water-cooled plates, especially equipped with cold water The machine’s large-scale external circulating water-cooling plate can ensure the continuous and stable input of high-flow and low-temperature water at the water inlet. It flows through the water channel inside the water-cooling plate and exchanges heat through the plate body and the heat source, making use of the high specific heat capacity of water. , Quickly absorb and take away the heat of the heat source to ensure the stable operation of the heat source.
Battery technology in new energy vehicles is a core technology, and the quality of the battery has a great impact on the performance of the vehicle. Many car companies want to get a share of the new energy car industry, but due to technical reasons, the risk of entering the market is relatively high. Many car companies can only wait and see. To give a very simple example, the welding problem of the water-cooled belt and water-cooled plate commonly used in the battery cooling device of new energy vehicles has plagued a large number of enterprises. The reason for in-depth analysis is not that the current technology level cannot be reached, but that the existing production methods are too expensive. Faced with the new energy vehicle market where the market is not clear and the orders are not stable, the high processing costs have caused one A large number of companies stay away. So is there a low-cost welding process with high welding quality? The answer is yes, high frequency welding is a process with lower cost and better welding quality.
The serpentine water-cooling belt is a commonly used accessory in the power battery cooling system. Its principle is to embed the lithium battery in the groove and add a cooling medium to cool the battery pack.