Recently, Sina Weibo registered ID @ 小fish lithium battery, got a batch of blade battery systems manufactured by BYD’s Chongqing Fudi Battery Co., Ltd. through a third-party channel. In July 2020, the first Han EV electric car launched in the blade battery system was listed. By April 2021, BYD announced that the full-range EV model switches to the blade battery system, and the model of the DM-I platform is fully adapted to the power-type diverse dedicated blade battery system. At present, the EV model of the blade battery has Han EV, 2021 Tang Ev, Qin Plus EV, Song Plus EV and 2021 E2, and the drip D1 manufactured by BYD to a travel company. At the same time, as the BYD Sub-bureau, Fudi Biller, also undertakes the business of other vehicle manufacturers to provide different technical specifications of the blade battery system.
Sina Weibo registered ID small fish lithium electrodes obtained in BYD as a blade battery manufactured by FAW (400 volts), rated capacity 135ah, translational load-bearing capacity For 54 degrees. It seems that this piece of blade battery for testing is very close to the blade battery of FAW Red Flag E-QM5.
Of course, this group is about to disassemble the blade battery, which is the EV model that the FAW brand cannot be finally confirmed.
This set of blade battery systems with a length of 1900x1200x1100mm, self-respect, or a large-module technology, which uses large monomer cells in series, by the bottom FullAluminum alloy material (referred to as green arrow), upper soft ABS material housing (referred to as a blue arrow) and “convex” fuse box (referred to as the red arrow). 
The fuse box control panel located at the front end of this set of blade batteries sets 2 sets of coolant into and out of the pipe interface (the pipeline referred to in the red arrow is exit) The pipeline referred to in the yellow arrow is imported), 2 sets of high pressure power cable interfaces (referred to as white arrows) and BMS low voltage communication cable interface (referred to as green arrows). 
Since the upper casing of the entire blade battery is fixed by bolts and aluminum sheets, it is necessary to “violent” demolition. Solution.
Yellow Arrow: Sealed Aluminum
Blue Arrow: Plastic Housing Edge
Red Arrow: Side Protection of Camera with the lower housing Secondary support
is sealed during the separation of the upper and lower casings, and the layer of soft sealing pad (the red arrow is referred to. )The presence.
The technical state of the bare blade battery cell, the cable, the fuse box, and the lateral monitoring circuit board after the removal of the upper casing. 
Yellow Arrow: Insurance Box
Red Arrow: Aluminum High Voltage Power Dynamics (Fair to confirm the positive or negative poles)
White arrow: aluminum high pressure power Dow (fail to confirm the positive or negative pole)
Blue arrow: a one-piece water-cooled plate fixed to the top of the slope of the blade battery
Green arrow: fixed in the horizontal The arrangement of the blade battery cell is side, and the circuit board (a total of 8 groups) for detecting the electrical core voltage, current, and temperature signals
reveals only by separating the upper housing with the lower housing. Many technical states can be determined that the volume utilization rate of the blade battery system is higher than other brands. What is important is that the blade battery cell of “see” is almost occupied.The space inside the entire battery system, an integrated water-cooled plate replaces the heat sinking line of complex and existed leaks. All 124 sets of blade battery cells are ranging “a positive and one negative” missed series discharge, only the aluminum high-voltage cable positive and negative cables can be used.
Red Arrow: Fixed BMS Communication Cable and Battery BMS Communication Cable Interface 
Blue Arrow: Used for A rubber seal
White arrow is protected by the protective coolant line
Insurance box is fixed to the aluminum battery under the aluminum material, and the blade battery is fixed by bolts. Core, the housing on the water cooled plate is treated overall protection. In order to facilitate the separation of the insurance box and the battery under the battery, the BMS low-voltage communication cable is added with an additional group of interfaces, while the positive and negative high pressure power cable is directly related to the fuse box.
Disconnecting the BMS low voltage communication cable from the battery terminal (referred to as the red arrow) and the insured port (referred to as the blue arrow), and “violence” The shortest high voltage power cable interface with the shortest length of the dismantage is the contact step of the battery end to the end of the water-cooled board and the blade battery cell.
Aluminum material high pressure power cable is fixed to the blade battery electrical or negative electrode (fail to finally confirm) by aluminum bolt, at which time the BMS communication of the battery end The low-voltage cable is separated from the fuse box, and the high pressure power cable is fixed (the red arrow refers to the fixed end).
The figure shows the technical state close-up of the monitoring circuit board guard set on the side of the blade battery system.
Blue Arrow: Plastic Strip
White Arrow: Temperature Sensors Insulation stickers fixed at the “Saix” of the plastic guard
This set of load-on-load power supply 54-degree electric blade battery system sets a 124-cell core, and each 16 sets of cells are incorporated into a management system, corresponding 1 Wrapped boards are used to monitor voltage, current andTemperature, all 8 sets of wires are connected in series by data lines.
From the perspective, the circuit board guard “Spend” is set to “hide” “hidden” temperature sensor, without any outstanding.
The technical state of disassembly of the first, 2 array, and the high pressure power cable has also been disengaged from the battery terminal at this time.
Red Arrow: Set 1 set of communication cables and other circuit boards
Yellow arrow: blade battery cell positive
Red area: FAW LOGO
The picture above shows the close-up of the circuit board technical status detail.
Red Arrow: No sets of circuit boards set related cable interface
Yellow arrow: Communication cable is a data sampling wire harness
White arrow: temperature Sensor (collecting aluminum housing blade battery surface temperature data) 
Red area: FAW logo
In BYD officially announced in the blade battery technology information, almost Only structural information on the PPT form. This time, BYD can completely dismantle the blade battery system for FAW-OS, and clearly visible to the technical state of integrated water-cooled plates is very rare. One-piece water-cooled plate (referred to in the red arrow) is set at the top of the slide of the slide battery (the blue arrow refers to) and is applied to the bolt with the bolt.
1 day in advance, the heat dissipation glue between the integrated water-cooled plate and the blade battery cell, so that soak is used to easily disengage. In fact, the heat dissipation is firmly securely secured to fix the integrated water-cooled plate and the battery. Helpless, only “violence” operation, hard-erased open-integrated water-cooled board.
As can be seen above, the integrated water-cooled plate is manually set off, and there is no turn, the surface is not damaged.. The film covering the housing of the entire aluminum blade battery system is visible, and the front and rear longitudinal blocking (referred to as the red arrow) is integrated with the case under the blade battery.
Further enlarged the longitudinal sessage detail of the rear of the casing under the blade battery (referred to as the blue arrow), and the hollow treatment is not confirmed by the colloidal material filled (The red arrow is referred to).
It is to be noted that this group is set by BYD to the blade battery manufactured by FAW, only the periphery of the longitudinal ends, no setting two sides, only the housing tray On both sides, protective measures to prevent impact are set. In other words, while the blade battery under continuous is lifted, the passive safety is borne by the battery cell and the body welding of the blade battery. In fact, remove the side blade battery system, which is already an important technical state of the CTP (no module) package process “iteration” package process “iterative”. 
The blade battery system is adapted to the water-cooled plate integrated structure, and the preset built-in waterway structure is completed by the stamping process. In the high temperature environment, the “heat” of the transverse blade battery is passed down, and the “cold amount” is dispersed from the top-down “cold amount”, which has reached the technical setting of the high temperature heat dissipation servo.
Removes the cooling line, high pressure power cable and low voltage communication cable, integrated water-cooled plate, 8 sets of panel integrated temperature control and electronically controlled system, is to directly avoid accidents The risk of normal coolant coolant leakage when collision is collided while promoting the overall reliability.
The author has something to say:
Currently publication shows that the vehicle manufacturer of the BYD procurement blade battery system includes FAW, manufacturers who do not open information include traditional cars and joint venture brands. BYD acts as a vehicle manufacturer with R & D and mass production power, electric drive, attachment system, and model platform, now starting to supply blade battery systems to the outside, in mind, customer groups of different technical strengths, a blade battery system with high technical content Adapted ability. 
This highly suspected of the blade battery system for the ferroe red flag E-QM5 electric vehicle is about 400 volts (Zi Di Chongqing Eph “Di Lithium Battery Factory is manufactured, which has greatly improved compared with the mainstream models using a 350 volt voltage platform. In the development situation that continues to rise in the charging efficiency, the higher the battery voltage, the smaller the charging current, the smaller the heat, the safer, but this is the higher the system manufacturing cost and the quality control standard.
In the soldier battery system sold by the BYD Han EV, it is a blade battery manufactured by BYD Chongqing Forti Battery Factory, but the system voltage setting About 570 volts. Under the “E + Platform” architecture, the “3-in-1” electric drive system equipped with Han EV, “2-in-1” bidirectional charger system or even the BC series electric air conditioner compressor must improve performance. However, the guarantee of reliability and security is obvious. The same is the technical state of the blade battery, and the technical strength of the salesmanship is to be combined with the technical strength and product settings of the purchase of the vehicle, and even the necessary performance “dropwors”.
Although this group was unable to confirm the blade battery provided by BYD to FAW, it was unable to confirm, but by dismantling a peek, the internal technical status, or a pre-proportion of BYD system power Development of CTC Packaging Technology in Battery.
Not complete. . . .
New Energy Intelligence Analysis Network Evaluation Group