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Replies to post #31145 on JB and ZJMY Holding Co (JBZY)
04/11/17 1:41 PM
04/13/17 9:16 AM
DESCRIPTION CN202855866
The utility model discloses a battery network composition system, first, with 7 cylindrical batteries in parallel into a 25Ah "battery Platoon", and then 10 Battery Platoon series into the 36V25Ah battery pack; M battery pack is a series of 1 batteries, and then with n batteries in parallel to the electric power supply voltage network into a group system. The utility model relates to a battery group of "parallel-tandem-parallel" network structure. In the gradual increase of the whole vehicle battery network into group storage energy is used to expand the current capacity to improve the voltage capacity, and finally expand the current capacity of 3-level expansion, reliability consistency is significantly higher than single-group batteries.
Battery Network Composition System
Technical field:
The utility model relates to the electric vehicle technology, in particular to the battery formation technology of EV.
Background technology:
Today's electric cars are used in a group of batteries. Even with small cylindrical batteries, the first parallel into a large battery, then series into a group of batteries for the use of the whole vehicle. This combination of the way, when one of the cylinder batteries damaged, will cause the entire group of batteries to work, so that the reliability of the battery group greatly reduced.
Utility model content:
The technical problem to be solved by the utility model is to provide a system of battery network composition for the deficiency. First, a certain number of cylindrical batteries in parallel into a 25Ah "battery Platoon", and then a number of batteries series into 36V25Ah battery pack; Several battery packs are concatenated into 1 batteries, and then a number of batteries are connected in parallel into a networked group system that conforms to the power supply voltage of EV. With such a "parallel-series-parallel" network structure of the battery group, in the gradual increase in the whole vehicle storage battery network into groups of energy is used to expand the current capacity to improve the voltage capacity, and finally expand the current capacity of 3-level expansion, the reliability is much higher than single-group batteries.
The technical scheme adopted by the utility model is:
A battery network consisting of a number of battery packs in tandem with a certain amount of batteries in parallel, each battery pack is 7 or 8 cylindrical batteries in parallel into a 25Ah "battery Platoon", and then the 10 Battery Platoon series.
To achieve better consistency, each battery pack 7 cylinders in parallel into a 25Ah "battery Platoon", and then the 10 Battery Platoon series.
The beneficial effect of the utility model is:
1, the utility model each battery pack is 36V unit, troubleshooting easy to determine the location of the fault battery pack, convenient replacement.
2, the utility model of the battery pack in the further use of artificial detection of fault cells, determine the failure of the single section, replacement of the failure single-section batteries, the battery pack can restore the original function.
Killer Mace 3: High Energy, Better Safety, High Recycle Life, Low Cost Power Battery Manufacturing Technology.
Power lithium battery is the core of electric vehicles, its quality directly determines the quality of electric vehicles. However, it is limited by the five indexes such as energy density, discharge rate, cycle life, consistency and safety of lithium ion battery by the physical characteristics and process equipment of cathode material, separator, anode material and electrolyte. It is unrealistic to have improvement on all fronts of five indexes, or a substantial increase in the cost has to be paid. In this case, it must be a targeted breakthrough in lithium-ion battery R & D. Our team focused on only four parameters: the energy, safety, cycle life and reduce cost. We were able to improve the preparation of the cathode materials, and developed a new negative material, so to adapt the approach of the unique "big horse pull car", in order to create a battery with frequent replacement and manual maintenance. Its specific energy reaches 180-200 wh/kg, the cycle life reaches 2000 times, the safety is greatly improved, and the cost of the batteries is reduced to 850 yuan/kwh, the cost of the group of batteries is reduced to 1050 yuan/kwh. Our batteries are very cost-effective of. This battery technology sets the foundation for our EV to reach the top of EV world with high WCRM.
