AGV forklifts often use 24V or 48V DC industrial batteries as power. The power supply of the battery should reach the rated ampere-hour value, and the work needs of more than 8h should be ensured in general, and the power supply capacity of more than 17h is required for the two-shift working environment. Battery charging can be random charging and full cycle charging two ways. Random charging The car repair free battery that can be charged arbitrarily can be charged at the spare parking station of the AGV forklift truck at any time without time limit.
Today, most AGV forklifts use nickel-cadmium batteries, nickel-metal hydride batteries, lithium batteries and lead-acid batteries. The following is a simple comparison of the above types of batteries:
1、 nickel-chromium battery
Nickel-chromium battery its internal resistance is small, can be used for large current discharge, in the discharge voltage change is small and other kinds of electromagnetic in contrast, nickel-cadmium battery can withstand overcharge or let off electricity, simple and convenient to use, discharge voltage according to its discharge current somewhat different, generally is about 1.2V nickel-cadmium battery discharge termination voltage is 1.OV /cell, The actual service temperature range is -200C-600C, in which the discharge can be carried out. Charge and discharge can be repeated more than 500 times.
2、nickel metal hydride battery
Nickel-metal hydride battery energy than nickel-cadmium battery two times, charging with a special charger can be quickly charged within one hour, self-discharge characteristics than nickel-cadmium battery, can be retained longer after charging, can be repeated more than 500 times of charging and discharging.
3、lithium battery
Lithium batteries have a high energy density, and compared with high-capacity nickel-chromium batteries, its volume energy is 1.5 times its energy density is 2 times. High voltage, the average use voltage is 3.6V, 3 times that of nickel-chromium and nickel-metal hydride batteries, the use voltage is flat and high capacity, the use temperature is -200C-600C. The charge and discharge life is long, and its capacity is at least 70% after 500 discharges because the lithium battery has high energy density, high voltage, stable work and other characteristics.
Recommend the BYD blade battery module（(48V/332Ah C114F 1P15S）that is very suitable for AGV forklift trucks:
advantage of LiFePO4 BYD Blade Cell (48V/332Ah C114F 1P15S）：
1. Increased battery energy density：
The blade battery cancels the module design and reduces the design of many structural parts.
At the same time, the upper and lower boxes are closely connected to the battery core, which significantly improves the volumetric energy density. This is also BYD’s widely publicized 50% increase in volumetric energy density.
2. Low cost：
The blade battery cancels the module design and optimizes the battery structure design. The number of secondary battery components has been reduced by 40%, and the low-cost LFP system has been applied, effectively reducing costs.
3. Strong structure：
The blade battery PACK is designed on the upper and lower sides of the battery cell, and two high-strength strength plates are bonded using structural adhesive. This creates a structure similar to a honeycomb aluminum plate, allowing each cell to act as a structural beam. Traditional battery packs generally only have 4-5 beams, while blade batteries allow each cell to act as a structural member, so its strength can be imagined. When there is a collision at the bottom of the battery, the battery core can directly withstand a certain range of force.
4. Excellent thermal management：
The liquid cooling plate of the blade battery is arranged above the battery core. At the same time, a thermal conductive layer is designed between the battery cores. The heat exchange area of this solution is much larger than that of traditional prismatic battery cells. It can effectively transfer the heat of the battery core to the water-cooling plate.
In addition, the blade battery has good heat dissipation performance, so the heat pipe of the blade battery is excellently designed and can control the maximum temperature difference within the battery within 1 ℃. The current industry standard is 5 ℃
5. Platform ization：
Blade batteries come in different specifications. Its length can be changed between 347~1012mm. In addition, it is a standard flat-type battery pack. Blade Battery can change the size of the battery pack in the X and Y directions according to the vehicle space, and develop batteries of different specifications.
This platform-based battery effectively reduces development costs and time. Its patent shows that there are at least 8 types of blade battery solutions. And corresponding to different sizes of batteries and different arrangements, the double-layer battery solution is also considered. For the integration of the cabinet, there are traditional separation solutions of the chassis and the cabinet, and there are also integrated chassis solutions in which the two are integrated into one.
