Tesla Battery Inspection Helper X-ray Inspection Equipment

Stylish appearance, 3.2 seconds acceleration from 100 kilometers, and 440 kilometers of battery life, these are the data shown to people by Tesla Model S as a pure electric car. The Model S can have performance that is not inferior to traditional fuel vehicles, in addition to electric motor technology, it also benefits from Tesla’s advanced battery technology. So, what unique achievements does Tesla have in the research and development of battery packs, one of the core technologies of electric vehicles? Recently, a foreign netizen took apart the battery panel of a Model S to find out.
The battery pack has a nameplate indicating its identity as a whole, which indicates that its capacity is 85kWh and 400V direct current. Simply put, the battery can hold 85 kWh of electricity, which can be used by an ordinary family for one month.
The surface of the battery pack is not only protected by a plastic film, but there is also a protective plate of fireproof material under the plastic film. Below the shield is the battery pack. The protective plate is connected to the battery pack frame by bolts, and the joint is filled with sealing adhesive. From the appearance, the battery pack is well protected.
The Tesla Model S battery pack board seems very tall. The battery board is made up of 16 battery packs in series, and each battery pack is made up of 444 lithium batteries, each of which is connected in parallel. Therefore, the Tesla Model S battery pack board is composed of 7104 18650 lithium batteries, and each lithium battery is strictly passed through the cylindrical lithium battery X-ray inspection equipment to ensure product quality and safety.
The main fuse is located at the front of the battery board and is protected by a shell to prevent impact. The rated working current is 630A, the rated voltage is 690V, and the breaking current is 700-200kA. The fuse is manufactured in India under the trend of globalization. The market price is around 600 yuan.
The 16 battery packs in the battery panel are evenly spread on the shell, the overall structure is compact, and the spreading is good for heat dissipation. Each battery pack consists of six battery packs connected in series, but the arrangement of the battery packs does not adopt a balanced arrangement, but an irregular result. It is guessed that it is to facilitate the arrangement of the heat dissipation pipeline in the battery pack.
The 18650 lithium battery is the lithium battery of an ordinary notebook computer. Many 18650 lithium batteries form a single battery pack, and then the battery pack forms a battery pack, and 16 battery packs form a battery board. Before the battery is packaged into a finished product, it is necessary to use X-ray fluoroscopy to check whether the coverage of the positive and negative electrodes exceeds the specification requirements, whether there are damages and defects after multiple processes. forward.
Each battery pack is connected in series by a 2/0 main line. The main line is located in the center of the battery panel and is covered by a protective plate, which is more concealed. The 2/0 main line will be connected to the contactor of the output terminal after the current is collected. The contactor uses Tyco Electronics’ parts specially produced for Tesla.
There is a 2/0 main line in the center of the battery panel, and each battery pack outputs current in series through this main line, so the 2/0 main line is especially important. Tesla uses American Champlain cables specially produced for electric vehicles, which can withstand a voltage of up to 600V and can work between -70°-150°. The 2/0 main line is well protected, not only with guards, but also with fireproof materials. It can be guessed that it may produce high temperature when working
Except for the battery pack inside the battery panel, there are at most “coolant” pipelines. Each battery requires a certain amount of “coolant”. Although the “coolant” does not actively flow through a pump drive, all the pipes of the entire battery panel are connected, and the “coolant” can flow in a certain range by thermal expansion and contraction.
“Coolant” is green and is made of a mixture of 50% water and 50% ethylene glycol. “Coolant” is used in conjunction with aluminum tubes to maintain the battery temperature balance and prevent excessive local temperature from causing battery performance degradation 。Tesla’s battery thermal management system can control the temperature between battery packs at ±2°C. Controlling the temperature of the battery panels can extend the life of the battery.
The battery management system (Battery Management System abbreviated as BMS) is a device for safety monitoring and effective management of battery packs, and improving battery efficiency. For electric vehicles, the effective control of the charging and discharging of the battery pack through the system can achieve the purpose of increasing the cruising range, prolonging the service life, reducing the operating cost, and ensuring the safety and reliability of the battery pack application.
Elefine Technology specializes in the research and development, production and sales of lithium battery X-ray inspection equipment. The products are widely used in 18650 and 26650 cylindrical lithium batteries, square shell lithium batteries, soft pack lithium batteries, power lithium batteries, etc. The equipment adopts a high-speed positioning transmission mechanism with a production capacity of up to 60PPM, ensuring that the quality of lithium batteries is perfectly applied to various industries.