Introduction
In recent years, the popularity of the car, NOx, COx increased displacement, environmental pollution and problems of global warming worse. To this end, many countries are actively implementing the hybrid electric vehicles and electric vehicles to replace conventional cars. But more importantly, these new energy vehicles require high energy density, high voltage, rapid charge-discharge characteristics of energy storage media in support, such as lithium-ion batteries. Battery charge and discharge as a practical device to fully play its role, its large capacity, high accuracy, reliability has been increased. To effectively play the battery performance, this article will serve as high capacity batteries for the design of electrical systems. hp Pavilion DV1000 battery hp Pavilion dv6 battery
System Components 1
(1) Overview
Battery charge and discharge device circuits are mainly two. A kind of the linear amplifier (Charger) + load impedance (electric shock), etc., hereinafter referred to as composition 1, while the two others by the system for the converter + inverter (electrical charge and discharge) with the following form short 2 first to compare the advantages of both.
The battery charger is now on the market is about half of all 1, because the charger phenomenon consisting of fever, and large, use the launch site restrictions. In the words of the electrical work, if you want two-way transmission of energy, is then a 2 is the best.
Here for form 2, on two different ways to discuss the design of circuits.
The process of designing the system first type voltage inverter combined buck-boost converter and two-way combination of a battery charge and discharge device, ahead of the second draft is adopted high supply load capacity and electronic equipment (hereinafter referred APL2). For APL2 can turn any battery voltage, current, such as food or load may be a 0kW input and output (making the voltage 0 ~ 200V or 400V). 417066-001 hp pavilion dv6000 battery
The first step of design, the system and the isolation between the power transformers, the reactor section Buck converter, the switching unit so small, the existence of certain problems. Meanwhile, the subsidiary of the high frequency transformer isolation circuit, the inhibition of cells pulsed current buck converter, and the reactor is essential.
The approach of the second project, namely, the use of APL2, does not change depending on the battery to change the nameplate capacity of the circuit. At the same time, increased through the series circuit and the charge and discharge current characteristics of small and light.
As the design of a case, the nominal capacity of 1 0kVA the same design conditions, the design results of this comparison is the second volume of the approach to device design is the first design approach 1 / 2. Based on the above analysis and comparison, this implies the use of APL2 and the battery discharge device. hp 520 battery hp 530 battery
(2) The base composition
The system settings simply by a fiber optic cable can be connected and APL2 user’s computer. Meanwhile, the use of this system can be achieved within the Windows system, the development of battery charging and discharging system
(3) Control scheme
Figure 2 APL2 constant current modes when the control block diagram. Enforcement costs and waste, downloaded from a computer model data that the value of outstanding orders, for the constant current control. While charging, the battery voltage reaches the predetermined maximum voltage value, automatically switches to constant voltage mode control and load slow.
Shown in Figure 2, the charging circuit and discharge instruction loop to switch contacts, but is actually using the DSP to pass the program, almost no switching delay. APL2 as a battery charge and discharge device, without changing the internal structure, it can be applied directly to control the characteristics of the circuit. apple macbook pro 15 inch battery apple macbook pro 17 inch battery
2 Application Example
The capability of an application APL2 large, high-voltage ion battery charge and discharge system. battery charge and discharge unit as an object, the maximum voltage of 336V, load and discharge current of 00A ± 1. Figure 3, the composition of the system, Table 1, the basic specifications for the APL2.
Rated voltage of the current system for 400V/25A APL2, to increase capacity by using the master-slave, the maximum can be parallel four APL2, can load and unload under 100A. Figure 4 shows the 0 ~ 90 load voltage and current waveforms of the elbow, recharging the battery type switching power stage has been the response waveform, Figure 5 shows the 0 waveform ~-90A of current when the battery voltage discharge of the battery, when the current changes have been the step response waveform. The current from the battery, first specify the output current APL2 home, while the slave is responsible for monitoring the host and release current value and change orders. apple ibook g4 14-inch battery apple macbook 13 inch battery
The system 1 00A may be performed quickly on the charge current S-velocity and discharge control can be used to charge the lithium-ion battery and discharge characteristics of the basic test.
3 Conclusion
According to this design method can be used directly for APL2 load capacity of the battery and draining device, the embodiment of the system small and lightweight, the corresponding reduced system development between Japanese inches. In this paper, we introduce the charge lithium ion APL2 and discharge system of the situation, it can also be used for loading double-layer capacitors and rejection, EV and HEV Motor · ninth power system dynamics and other areas, and space-saving and energy saving features. apple a1189 apple ibook g4 12-inch battery