PHS mobile phone universal charger

PHS mobile phone universal charger

In the cell phone canon bg-e6 battery grip charger standard uniform enforcement of June 14, after starting from August 1, PHS terminal charger and interface uniform standards will also be enforced when PHS terminal submission must meet the relevant technical requirements, otherwise do not I test.

It is responsible for the formulation and implementation of these standards “China’s fixed and wireless terminals Union” relevant persons introduced, the new PHS charger and interface with the Ministry of Information Industry to develop standards for mobile phone charger is fully consistent, from a cable and a USB the composition of the parent seat vgp-bps2 , vgp-bps2a charger port.

Conclusion

The innovation of this paper is a balanced two-way non-destructive charge-discharge program using an independent module form, the work simply (N-1) the number of modules connected to the vgp-bps2b , vgp-bps2c battery for the N group, the easy to implement and easy to maintain, in addition, in the charging and discharging the course of its automatic balancing capacity difference between adjacent cells to ensure that the battery pack all the batteries are in the process of charging and discharging the same level, thus preventing battery overcharge, over-discharge, thus extending battery packs working life. In addition, the use of microcomputer control mode, with control of simple canon eos 20d battery grip, easy to implement and low cost advantages. Experimental results show that this is a valid circuit.

Microcontroller Control Software Design

Microcontroller Control Software Design

The key is to balance the control of the module parameters of the inspiron e1405 battery voltage collection and trigger pulse output FET and battery status to determine the control software to achieve a balanced charge and discharge at the same time should also be able to realize the battery overcharge, over discharge instructions to protect the other When the battery temperature exceeds its operating temperature range can also be a timely manner to protect the output instructions.

Experiment and result analysis

With the two lead-acid VGP-BPS8, VGP-BPS8A batteries do 12V/4Ah comparative experiments, before the experiment, respectively, the battery discharges to the voltage is not balanced, and then use the module to do a balanced two-way balanced charge and discharge experiments, test the initial conditions the same. The experimental results shown in Figure 4,5, can be seen from the diagram in the absence of a balanced case, the charge and discharge of the latter, the battery voltage difference between the more and more, while the two-way balance of modules in the process of charging and discharging effectively narrowed 2 between the VGP-BPS9, VGP-BPS9/B battery voltage, particularly in the charging and discharging the battery too late to avoid the charge and over-discharge, protect the battery pack.

In the future, PHS mobile phone charger can be universal.

“At present, the alliance has not raised objection to the implementation of standards manufacturers, so we are on schedule the implementation of the standard expressed optimism about the prospects.” Yesterday, China’s fixed and wireless terminals stakeholders Secretariat of the VGP-BPS9/S, VGP-BPS9A/B League told this newspaper.

 

Good product about AC charger

Good product about AC charger

Good product launch Programmable USB / AC Li-Ion charger solution

WPG Group Pinjia Summit Group recently been actively fujitsu t4220 battery promoting the new SMB138 lithium-ion battery, SMB138 can be directly AC / DC converter and USB interface for an input power to provide handheld devices (Mobile / Hand-Held Device) Best charging solution. With built-in automatic adjustment mechanism can be based on the size of the input power self-regulating charge current and high efficiency Switching Mode ways to implement the battery charge is different from the traditional linear (Linear Mode) charging significantly improve the charging efficiency to save HSTNN-OB53 charge time, heat, PCB space, has been plagued by the problem for engineers.

SMB138 is industry’s most advanced manufacturing process, in order to 3MHz Switching Mode Converter for the core, providing more than 90% of the conversion efficiency, output charge current is more up to 1.25A with vgp-bps9s. With a patent TurboCharge feature, allowing users to be able to meet the USB 2.0 specification, the input by the system in accordance with the situation appropriately adjust the size of the charge current, full and effective use of input power, will charge up to the provisional Li River to make the menu letter. In addition, SMB138 also provides USB OTG (On-The-Go) function, without additional components be installed, may be provided separately 5V/500mA output, offer services such as mobile devices are commonly used VGP-BPS10, such as the Bluetooth Headset.

A unified interface & one-sided access

A unified interface & one-sided access

Later, Dixon went to pass, the Association to visit Frederick and dslr battery grip a number of cell phone stores, but the surprise is that even a number of sales that had never heard of the “cell phone charger uniform standards.” When a reporter referred to “universal charger”, the response of the majority of sales are “not that universal chargers do.” National Institute of Standardization of this province, experts say the current market popular “universal charger” is not a unified standard general-purpose charger. Universal charger can be used for different models of mobile phone charger, but not as common as a USB charger port, both connected with the power outlet can also be connected to the computer and other canon bg-e2n battery grip equipment.

“At present, a unified interface, one-sided access to the power side of the USB interface, for most consumers do not practical significance. After all, the use of computer USB port to charge the phone the consumer is not over, not to mention the body of mobile phone interface is not unity, can not be considered a truly unified mobile phone charger. “mobile phone chain, Purchasing Guide canon bg-e3 battery grip Association Hang Huang told reporters that although the standard has been implemented more than a month, but due to technical problems, be able to use common cell phone charger is still not available, and the all the different brands phone charger is a vast use of a common project in the short term difficult to achieve. In the Suning Appliance, Nokia cell phone sales staff said that although 15 certified by the department concerned in the general-purpose charger Nokia’s products there, but due to brand competition, product cost and other factors, really want to promote the opening of this standard will not be easy with canon bg-e5 battery grip, at least Hefei is also the current market can not be bought using a common cell phone charger.