CN207675896U - A kind of distribution on line formula accumulator group monitoring device - Google Patents
A kind of distribution on line formula accumulator group monitoring device Download PDFInfo
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- CN207675896U CN207675896U CN201721625121.0U CN201721625121U CN207675896U CN 207675896 U CN207675896 U CN 207675896U CN 201721625121 U CN201721625121 U CN 201721625121U CN 207675896 U CN207675896 U CN 207675896U
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Abstract
The utility model provides a kind of distribution on line formula accumulator group monitoring device, including a monomer collection module, a power ＆ environment supervision center, several monomer modules and a Hall sensor；The input terminal of the Hall sensor is serially connected in the charging and discharging circuit of accumulator group, and output terminates on the current acquisition input terminal of the monomer collection module；The input terminal of several monomer modules is correspondingly connected to the positive-negative polarity both ends of the tested battery cell of accumulator group, and output end is connected to controlling bus on the input terminal of monomer collection module by communication；The voltage acquisition input terminal of the monomer collection module is connected on the terminal voltage detecting line of accumulator group, and output end is connected to the input terminal at the power ＆ environment supervision center.The equipment that the utility model can monitor the one such as voltage, internal resistance, the temperature of its tested battery cell on-line, solves the maintenance issues that lead-acid accumulator potential faults cannot find, solve in time in time in a manner of unattended, live networking.
Description
Technical field
The utility model is related to a kind of lead-acid batteries to carry out on-line monitoring equipment.
Background technology
Backup power supply includes power backup power supply and communication backup power supply, is now widely used among all trades and professions, is wrapped
Include all trades and professions of communication, electric power, finance, medical treatment, petrochemical industry, education, traffic or even clothing, food, lodging and transportion -- basic necessities of life.The main use of backup power supply
Way be exactly prevent because alternating current interrupt temporarily, and cause important equipment cancel closedown, loss of data, power machine equipment out of control etc. it is tight
Weight accident, forms huge economic losses.Therefore backup power system, especially standby lead-acid batteries how are safeguarded, at
For one of the important process of current industry backup power supply administrative department.
However the lead-acid battery group where backup power supply is in large scale, it is large number of, how to find fail battery monomer or
The battery cell of potential risk is not but an easy thing.Conventional way is stored to whole group using off-line type fictitious load
Battery discharges, and then finds out problematic battery.This method is more effective, but the manpower and materials put into are huge, safeguards
It is of high cost, it cannot use on a large scale.Another way is exactly monolithically to be surveyed using the artificial section section of monomer one of hand-held internal resistance meter
Amount, this method also has certain effect, but also needs a large amount of manpower and materials, and maintenance cost is higher.And because being manual operation,
Inevitably have the problem of causing battery to be judged by accident because of misoperation, also can not real-time early warning there are the single batteries of security risk.
Based on above-mentioned total reason, standby lead-acid accumulator potential faults find in time, the maintenance issues that solve in time need at present
It solves.
Utility model content
The technical problems to be solved in the utility model, be to provide a kind of lead-acid batteries carry out monitoring it on-line it is tested
The equipment of the one such as voltage, internal resistance, temperature of battery cell, with unattended, live networking, intelligent real-time online measuring battery
The data such as monomer voltage, internal resistance, temperature, solve that lead-acid accumulator potential faults cannot be found in time, the maintenance that solves in time is asked
Topic.
The utility model is realized in this way：A kind of distribution on line formula accumulator group monitoring device, including a monomer collect
Module, a power ＆ environment supervision center, several monomer modules and a Hall sensor；
The input terminal of the Hall sensor is serially connected in the charging and discharging circuit of accumulator group, and output terminates at the monomer
On the current acquisition input terminal of collection module；The input terminal of several monomer modules is correspondingly connected to the tested electricity of accumulator group
The positive-negative polarity both ends of pond monomer, output end are connected to controlling bus on the input terminal of monomer collection module by communication；Institute
The voltage acquisition input terminal for stating monomer collection module is connected on the terminal voltage detecting line of accumulator group, and output end is connected to described
The input terminal at power ＆ environment supervision center.
Further, the monomer module includes one the oneth MCU micro controller units, one first bandpass filtering amplifying circuit
With a direct current pulse discharge circuit；
The input terminal of the first bandpass filtering amplifying circuit is connected to the positive-negative polarity both ends of corresponding tested battery cell,
Output end is connected to the analog-to-digital conversion mouth ADC2 of the first MCU micro controller units；The DC pulse discharge circuit input
End is connected in the charging and discharging circuit of corresponding tested battery cell, and output end then connects the first MCU micro controller units
Analog-to-digital conversion mouth ADC1.
Further, the DC pulse discharge circuit further comprises a differential amplifier circuit, one drive circuit, one negative
Carry resistance, a current sampling resistor and a discharge switch；The load resistance, current sampling resistor and discharge switch, which are serially connected in, to be filled
On discharge loop, and the input terminal of the differential amplifier circuit is attempted by the both ends of the current sampling resistor, and output end then connects
Meet the analog-to-digital conversion mouth ADC1 of the first MCU micro controller units；The driving circuit both ends are separately connected the first MCU
Micro controller unit and discharge switch.
Further, the DC pulse discharge circuit is the low current circuit that peak point current is less than 1.5A.
Further, the monomer module further includes a voltage and temperature measuring circuit and a temp probe；The temperature
The temperature popped one's head in for detecting tested battery cell；The input terminal of the voltage and temperature measuring circuit is connected to tested battery list
Positive-negative polarity both ends of body, and being connected with temp probe, the analog-to-digital conversion mouth of output end then the first MCU micro controller units
ADC3。
Further, the monomer module further includes an adaptive number circuit and one first is isolated telecommunication circuit, described
Adaptive number circuit is isolated telecommunication circuit with first and is connect with the first MCU micro controller units.
Further, the monomer module further includes a balance charge/discharge circuit, which is within 2A
The charging circuit of electric current, the balance charge/discharge circuit on one side are connected in the charging and discharging circuit, other end connection described first
MCU micro controller units.
Further, the monomer collection module be total activation module comprising one the 2nd MCU micro controller units and
The one second bandpass filtering amplifying circuit that is connect with the 2nd MCU micro controller units, a tension measuring circuit, a current measurement
Circuit, one second isolation telecommunication circuit, third isolation telecommunication circuit and an adaptive number control circuit；
The tension measuring circuit is additionally attached on the terminal voltage detecting line of accumulator group；The current measurement circuit also connects
Connect Hall sensor；The second isolation telecommunication circuit is also connected with the first isolation telecommunication circuit；The third isolation communication
Circuit connects the power ＆ environment supervision center.
The utility model has the following advantages that：
1, the utility model all installs a monomer module to each section lead-acid accumulator monomer, which has real-time survey
The data such as voltage, ripple voltage, internal resistance, the temperature of lead-acid battery monomer are measured, then are uploaded data with controlling bus by communicating
It is aggregated into monomer collection module, monomer collection module is again uploaded to the data after summarizing in power ＆ environment supervision by communication bus
The heart, to realize the distribution on line formula monitoring of accumulator group；
2, each monomer module of the utility model has adaptive range function, can automatic identification different voltages grade
The lead-acid accumulator monomer of (2V/6V/12V), each measuring circuit range inside adjust automatically, it is ensured that monomer voltage and internal resistance
The accuracy of measurement；
3, the utility model supports the mode of two kinds of measurement single battery internal resistances simultaneously：That is ripple current method and direct current arteries and veins
Method is rushed, the high accuracy so as to cover the battery cell internal resistance under all field working conditions measures；
4, each monomer module has carries out active charge and discharge balancing function to connect tested battery cell, in same equilibrium
Under standard monomer voltage, by balance charge/discharge circuit, the battery higher to monomer voltage carries out equalization discharge, Zhi Daojie automatically
It is bordering within ± the 2mV of equalizing criterions voltage；Similarly, the battery relatively low to monomer voltage then carries out charge balancing；
5, each monomer module has adaptive number function, after monomer installs at the scene, passes through the automatic numbering work(
Can, can it is fast automatic complete monomer module and tested battery cell one-to-one number relationship, it is ensured that acquire upload
The data such as voltage, internal resistance, temperature are not in the entanglement problem fastened one person's story upon another person, and reduce production, install, the cost of O＆M；
6, each monomer module is completely independent and is isolated, and a monomer module is only responsible for measuring a batteries list
The data such as voltage, ripple voltage, internal resistance, the temperature of body, a monomer module failure, do not interfere with the normal of other monomers module
Work and operation are connected to monomer collection module by communication between module and module with controlling bus.
Description of the drawings
The utility model is further described in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1 is the theory structure block diagram of the utility model distribution on line formula accumulator group monitoring device.
Fig. 2 is the theory structure block diagram of monomer module in the utility model.
Fig. 3 is the theory structure block diagram of monomer collection module in the utility model.
Specific implementation mode
As shown in Figure 1, the distribution on line formula accumulator group monitoring device of the utility model, including a monomer collection module 1,
One power ＆ environment supervision center 2, several monomer modules 3 and a Hall sensor 4.
The both ends of accumulator group are connected on system switching power supply and form charging and discharging circuit, the Hall sensor 4
Input terminal is serially connected in the charging and discharging circuit of accumulator group, and output terminates at the current acquisition input of the monomer collection module 1
On end；The input terminal of several monomer modules 3 is correspondingly connected to the positive-negative polarity both ends of the tested battery cell of accumulator group,
Output end is connected to controlling bus on the input terminal of monomer collection module 1 by communication；The voltage of the monomer collection module 1
Acquisition input terminal is connected on the terminal voltage detecting line 5 of accumulator group, and output end is connected to the input at the power ＆ environment supervision center 2
End.
Wherein, in the utility model the characteristics of above-mentioned each module and function is as follows：
The accumulator group is to be tested battery cell by several and connect to be formed, and be serially connected in system switching power positive cathode
Both ends form backup power system；Nominal monomer voltage can be 2V, 6V or 12V, and nominal capacity can be from 5AH-3000AH not
Deng；
The system switching power supply refers to the height in all ups system power supplys, high-voltage direct current power supply or communication system
Frequency Switching Power Supply；When for ups system power supply, high-voltage direct current power supply, under amount operating condition, it is docked at its system switching
There are each batteries lists that output ripple electric current, the ripple current will flow through in its accumulator group for the accumulator group of both ends of power
Body, each section are tested presence of the battery cell due to its own internal resistance, and the ripple of certain amplitude will be generated in its positive and negative end
Voltage, at this time the distribution on line formula accumulator group monitoring device of the utility model can carry out on-line measurement using ripple current method automatically
Each section is tested the internal resistance of battery cell；When for high frequency switch communication power supply, it is tested the line that can not be obviously measured on battery cell
Wave voltage and ripple current, at this time the distribution on line formula accumulator group monitoring device of the utility model can use DC pulse automatically
Method carrys out on-line measurement and respectively saves the internal resistance for being tested battery cell；
The Hall sensor 4 is used to extract the ripple of the charging and discharging currents and the tested battery cell of each section of accumulator group
Current signal is simultaneously transferred to the monomer collection module 1；Both DC current signal can be measured, alternating current letter can also be measured
Number, Hall sensor herein is a high-precision Closed Loop Hall；
The monomer module 3 is used for the online internal resistance measurement for being tested battery cell, and measuring has two ways, point
It Wei not ripple current method and dc-pulse method；
The power ＆ environment supervision center 2 is the intrinsic equipment in user scene or backstage dynamic environment monitoring system；
The monomer collection module 1 is this system total activation module, for controlling each monomer module 3 to each tested battery list
The internal resistance measurement of body, and the data such as the cell voltage after collecting, electric current, internal resistance, temperature are uploaded into power ＆ environment supervision center 2.
It specifically combines shown in Fig. 2, the monomer module 3 includes one the oneth MCU micro controller units 31, the filter of one first band logical
Wave amplifying circuit 32 and a direct current pulse discharge circuit；The input terminal of the first bandpass filtering amplifying circuit 32 is connected to correspondence
The positive-negative polarity both ends of tested battery cell, output end are connected to the analog-to-digital conversion mouth of the first MCU micro controller units 31
ADC2；The DC pulse discharge circuit input terminal is connected in the charging and discharging circuit of corresponding tested battery cell, and output end is then
Connect the analog-to-digital conversion mouth ADC1 of the first MCU micro controller units 31.And the DC pulse discharge circuit further wraps
Include a differential amplifier circuit 331, one drive circuit 332, a load resistance 333, a current sampling resistor 334 and a discharge switch
335；The load resistance 333, current sampling resistor 334 and discharge switch 335 are serially connected in charging and discharging circuit, and the difference
The both ends for dividing the input terminal of amplifying circuit 331 to be attempted by the current sampling resistor 334, output end then connect the first MCU
The analog-to-digital conversion mouth ADC1 of micro controller unit 31；332 both ends of the driving circuit are separately connected the first MCU microcontrollers
Device unit 31 and discharge switch 335.The DC pulse discharge circuit is the low current circuit that peak point current is less than 1.5A.
When monomer module 3 is tested battery cell internal resistance using ripple method on-line measurement, bandpass filtering amplifying circuit 32 will
Useful ripple voltage signal is extracted at tested battery cell positive-negative polarity both ends and is filtered amplification, by MCU microcontroller lists
After first 31 analog-to-digital conversion process, average ripple voltage value V is calculated, monomer manifold is transmitted to controlling bus by communication
Module 1.
When monomer module 3 is tested battery cell internal resistance using dc-pulse method on-line measurement, MCU micro controller units 31
It controls DC pulse discharge circuit to start to work, DC pulse electric discharge is carried out to tested battery cell by battery detecting line；MCU
Micro controller unit 31 is tested battery cell by bandpass filtering amplifying circuit 32 and 331 synchro measure of differential amplifier circuit
Pulse voltage Vp and pulse current Ip calculates the internal resistance R for being tested battery cell using R=Vp/Ip.By result by communication with
Controlling bus is transmitted to monomer collection module 1.
The monomer module 3 further includes a voltage and temperature measuring circuit 34 and a temp probe 35；The temp probe
35 temperature for detecting tested battery cell；The input terminal of the voltage and temperature measuring circuit 34 is connected to tested battery
The positive-negative polarity both ends of monomer, and connected with temp probe 35, the modulus of output end then the first MCU micro controller units 31
Mouth ADC3 is converted, temperature test result is transmitted to monomer by communication with controlling bus by the first MCU micro controller units 31
Collection module 1.
The monomer module 3 further includes that telecommunication circuit 37 is isolated in an adaptive number circuit 36 and one first, described adaptive
Should number circuit 37 telecommunication circuit 37 be isolated with first connect with the first MCU micro controller units 31；Adaptive number
Circuit 36 can complete 3 adaptive automatically ordinal numeration of monomer module, make its number in the case where the control of monomer collection module 1 is coordinated
Corresponded with the number of tested battery cell, ensure each monomer module 3 transfer data to monomer collection module 1 when
It waits, monomer collection module 1 can identify the correspondence of data and tested battery cell, will not fasten one person's story upon another person, and cause data wrong
Disorderly；The adaptive automatic numbering circuit still carries out Phototube Coupling by the first isolation telecommunication circuit 37, does not influence each list
The safety on line of module 3 steadily works；The function simplifies production, site operation installation steps, reduces the comprehensive of equipment
Synthesis is originally.
The monomer module 3 further includes a balance charge/discharge circuit 38, which is electric current within 2A
Charging circuit, which is connected in the charging and discharging circuit, and the other end connects the first MCU
Micro controller unit 31；The balance charge/discharge circuit 38 coordinates with DC pulse discharge circuit, in the control of monomer collection module 1
Under coordination, realizes and be tested the function that battery cell carries out online active monomer charge and discharge balancing.Join when monomer collection module 1 works
When number is set as enabling tested battery cell equalization function, monomer collection module 1 then passes through standard equalisation voltage Vs logical
Letter reaches each monomer module 3 with controlling bus, the then monomer voltage Vd and standard equalisation voltage to acquiring in real time of monomer module 3
Vs is compared：If Vd>(Vs+2mV), then monomer module 3 starts DC pulse discharge circuit to the tested battery list that is connect
Body discharges, until above-mentioned condition is unsatisfactory for.If Vd<(Vs-2mV), then the startup of monomer module 3 equalization charging circuit 38 is right
The tested battery cell electrical measurement connect is charged, until above-mentioned condition is unsatisfactory for.Each monomer module 3 is all transported with such principle
Row reaches the voltage that each section is tested battery cell and reaches unanimity (gap is in ± 2mV).The function passes through monomer collection module 1
Running parameter setting determines to enable or do not enable, or only enables charge function when enabling equalization function, without enabling the work(that discharges
Can, to meet the requirement of various tested battery cell difference balanced ways.
Shown in Fig. 1 and Fig. 3, the monomer collection module 1 is total activation module comprising one the 2nd MCU micro-controls
Device unit 11 processed and one second bandpass filtering amplifying circuit 12, the voltage being connect with the 2nd MCU micro controller units 11
Measuring circuit 13, a current measurement circuit 14, one second isolation telecommunication circuit 15, third isolation telecommunication circuit 16 and one are adaptive
It should number control circuit 17；The tension measuring circuit 13 is additionally attached on the terminal voltage detecting line 5 of accumulator group；The electric current
Measuring circuit 14 is also connected with Hall sensor 4；The second isolation telecommunication circuit 15 is also connected with the first isolation telecommunication circuit
37；The third isolation telecommunication circuit 16 connects the power ＆ environment supervision center 2.
The monomer collection module 1 measures battery pack terminal voltage by tension measuring circuit 13, passes through current measurement circuit
14 and external Hall sensor 4 measure accumulator group charge and discharge DC current, by the second bandpass filtering amplifying circuit 12 and outer
Set the ripple current that Hall sensor 4 measures accumulator group；
The monomer collection module 1 passes through the second isolation telecommunication circuit 15 and communication and controlling bus and each monomer module 3
It is communicated and is controlled, read measured voltage, internal resistance, the temperature of tested battery cell etc. for summarizing each monomer module 3
Data carry out tested battery cell internal resistance measurement, tested battery cell electric voltage equalization etc.；
The monomer collection module 1 passes through adaptively number control circuit 17, the second isolation telecommunication circuit 15, communication and control
Bus processed carries out adaptive automatic numbering to each monomer module 3；
The monomer collection module 1 by third be isolated telecommunication circuit 16 by the cell voltage after collecting, electric current, internal resistance,
The data such as temperature upload to power ＆ environment supervision center 2；
The monomer collection module 1 is for controlling the internal resistance measurement for being tested battery cell there are two types of method, respectively ripple
Current method and dc-pulse method.The module measures the ripple that Hall sensor 4 is sent first before starting inner walkway work
The amplitude of current signal judges whether to meet the requirement that internal resistance is measured using ripple method.If it is satisfied, then the module will be by logical
Letter starts ripple current method with controlling bus broadcast transmission and measures internal resistance order, carrys out the interior of each tested battery cell of on-line measurement
Resistance.It is such as unsatisfactory for, then the module will send pulse discharge method with controlling bus by communication and survey internal resistance order, and it is each to carry out on-line measurement
The internal resistance of a tested battery cell.
Although the foregoing describe specific embodiment of the present utility model, those familiar with the art answers
Working as understanding, we are merely exemplary described specific embodiment, rather than for the limit to the scope of the utility model
Fixed, those skilled in the art modification and variation equivalent made by the spirit according to the utility model all should
Cover in the scope of the claimed protection of the utility model.
Claims (8)
1. a kind of distribution on line formula accumulator group monitoring device, it is characterised in that：Including a monomer collection module, a power ＆ environment supervision
Center, several monomer modules and a Hall sensor；
The input terminal of the Hall sensor is serially connected in the charging and discharging circuit of accumulator group, and output terminates at the monomer and collects
On the current acquisition input terminal of module；The input terminal of several monomer modules is correspondingly connected to the tested battery list of accumulator group
The positive-negative polarity both ends of body, output end are connected to controlling bus on the input terminal of monomer collection module by communication；The list
The voltage acquisition input terminal of body collection module is connected on the terminal voltage detecting line of accumulator group, and output end is connected to the rotating ring
The input terminal of monitoring center.
2. a kind of distribution on line formula accumulator group monitoring device according to claim 1, it is characterised in that：The loose pattern
Block includes one the oneth MCU micro controller units, one first bandpass filtering amplifying circuit and a direct current pulse discharge circuit；
The input terminal of the first bandpass filtering amplifying circuit is connected to the positive-negative polarity both ends of corresponding tested battery cell, output
End is connected to the analog-to-digital conversion mouth ADC2 of the first MCU micro controller units；The DC pulse discharge circuit input terminal connects
It is connected in the charging and discharging circuit of corresponding tested battery cell, output end then connects the modulus of the first MCU micro controller units
Convert mouth ADC1.
3. a kind of distribution on line formula accumulator group monitoring device according to claim 2, it is characterised in that：The direct current arteries and veins
Impulse electricity circuit further comprises that a differential amplifier circuit, one drive circuit, a load resistance, a current sampling resistor and one are put
Electric switch；The load resistance, current sampling resistor and discharge switch are serially connected in charging and discharging circuit, and differential amplification electricity
The input terminal on road is attempted by the both ends of the current sampling resistor, and output end then connects the first MCU micro controller units
Analog-to-digital conversion mouth ADC1；The driving circuit both ends are separately connected the first MCU micro controller units and discharge switch.
4. a kind of distribution on line formula accumulator group monitoring device according to claim 2 or 3, it is characterised in that：It is described straight
It is the low current circuit that peak point current is less than 1.5A to flow pulse discharge circuit.
5. a kind of distribution on line formula accumulator group monitoring device according to claim 2, it is characterised in that：The loose pattern
Block further includes a voltage and temperature measuring circuit and a temp probe；The temp probe is used to detect the temperature of tested battery cell
Degree；The input terminal of the voltage and temperature measuring circuit is connected to the positive-negative polarity both ends of tested battery cell, and is visited with temperature
Head connection, the analog-to-digital conversion mouth ADC3 of output end then the first MCU micro controller units.
6. a kind of distribution on line formula accumulator group monitoring device according to claim 2, it is characterised in that：The loose pattern
Block further includes an adaptive number circuit and one first isolation telecommunication circuit, and communication is isolated with first in the adaptive number circuit
Circuit is connect with the first MCU micro controller units.
7. a kind of distribution on line formula accumulator group monitoring device according to claim 2, it is characterised in that：The loose pattern
Block further includes a balance charge/discharge circuit, which is the charging circuit of electric current within 2A, the balance charge/discharge
Circuit on one side is connected in the charging and discharging circuit, and the other end connects the first MCU micro controller units.
8. a kind of distribution on line formula accumulator group monitoring device according to claim 6, it is characterised in that：The monomer converges
Integrate module as total activation module comprising one the 2nd MCU micro controller units and connect with the 2nd MCU micro controller units
One second bandpass filtering amplifying circuit, a tension measuring circuit, a current measurement circuit, one second isolation telecommunication circuit, one
Telecommunication circuit and an adaptive number control circuit is isolated in third；
The tension measuring circuit is additionally attached on the terminal voltage detecting line of accumulator group；The current measurement circuit is also connected with suddenly
That sensor；The second isolation telecommunication circuit is also connected with the first isolation telecommunication circuit；Telecommunication circuit is isolated in the third
Connect the power ＆ environment supervision center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721625121.0U CN207675896U (en) | 2017-11-29 | 2017-11-29 | A kind of distribution on line formula accumulator group monitoring device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721625121.0U CN207675896U (en) | 2017-11-29 | 2017-11-29 | A kind of distribution on line formula accumulator group monitoring device |
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| Publication Number | Publication Date |
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| CN207675896U true CN207675896U (en) | 2018-07-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107884722A (en) * | 2017-11-29 | 2018-04-06 | 福州福光电子有限公司 | A kind of distribution on line formula batteries monitoring device |
-
2017
- 2017-11-29 CN CN201721625121.0U patent/CN207675896U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107884722A (en) * | 2017-11-29 | 2018-04-06 | 福州福光电子有限公司 | A kind of distribution on line formula batteries monitoring device |
| CN107884722B (en) * | 2017-11-29 | 2024-05-28 | 福州福光电子有限公司 | Online distributed storage battery monitoring equipment |
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Address after: 350000 east of the five floor of building 4, M9511 Industrial Park, 18 Ma Jiang Road, Mawei District, Fuzhou, Fujian. Patentee after: Fuzhou Fuguang Electronics Co., Ltd. Address before: 350000 No. 8 Xingfa Road, Fuzhou Development Zone, Fuzhou City, Fujian province (FTA) Patentee before: Fuzhou Fuguang Electronics Co., Ltd. |