CATL's CTP integration technology

CTP (cell to pack, no module power battery pack)
CTP technology refers to skipping the standard module link, integrating the battery cell on the battery pack, and then installing it on the vehicle body. Its essence is to increase energy density and reduce costs. Its integrated technology was first promoted by CATL, and its development process can be roughly divided into three stages, namely CTP 1.0, CTP 2.0 and CTP 3.0.

CTP1.0
On September 10, 2019, CATL announced the CTP integration technology for the first time at the Frankfurt Motor Show. The technology is used in the EU5 model of BAIC New Energy. Compared with the traditional CTM process, it removes the side panels of the module and replaces them with straps, so as to achieve the purpose of effectively reducing weight and increasing the grouping rate.

CTP 2.0
It was further improved on the basis of CATL 1.0, and it was launched at the National "13th Five-Year Plan" Science and Technology Innovation Achievement Exhibition on December 21, 2021. This technology has further optimized the module, using the vertical and ho  rizontal beams on the battery box to replace End plate, its representative model is Weilai Automobile.

CTP3.0
That is, Kirin battery, which was first publicly released on June 23, 2022. It uses flat pallets, removes the vertical and horizontal beams on the box, and uses low-expansion batteries to match the body of the batteries to meet structural requirements. Its volume utilization has jumped from 55% of CTP1.0 to 72%, and safety, battery life, fast charging performance, and energy density have also been further improved.

The following is a comparison of the performance differences of the three generations of CTP in the CATL

Summary of the advantages of Kirin battery
This technology replaces the horizontal and vertical beams of the battery pack with a water-cooled plate, superimposes a double-layer cooling channel design, and has four major functions of support plate, water cooling plate, heat insulation, and buffering. The battery cells are arranged sideways in a double-row back-to-back manner, so more batteries can be put in, and while the fast charging technology is improved, the safety and volume utilization rate are also greatly improved.