CN2149050Y - Small-size fast charger for Ni-Cd battery - Google Patents
Small-size fast charger for Ni-Cd battery Download PDFInfo
- Publication number
- CN2149050Y CN2149050Y CN 93200927 CN93200927U CN2149050Y CN 2149050 Y CN2149050 Y CN 2149050Y CN 93200927 CN93200927 CN 93200927 CN 93200927 U CN93200927 U CN 93200927U CN 2149050 Y CN2149050 Y CN 2149050Y
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- China
- Prior art keywords
- loop
- frequency
- small
- frequency conversion
- output
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- Expired - Fee Related
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model discloses a small-size fast charger for Ni-Cd batteries, a frequency-changing loop which is composed of a frequency-changing tube BG and a frequency-changing transformer B is adopted; the super-audio big current output by the frequency-changing loop directly charges a rechargeable battery; a safety protection loop is connected in parallel at the output end of the frequency-changing loop, and a current limiting capacitance is connected in series at the anterior part of the frequency-changing loop. The utility model has the advantages of simple structure, high reliability, small size, light weight, safety, quick charging realization, etc.
Description
The utility model relates to a kind of charging circuit device that is used for battery, particularly can realize the circuit arrangement of quick charge.
Existing charger kind is more, and disclosed charging technique is also a lot of in patent gazette, but they are nothing more than two types, and the step-down of a kind of employing Industrial Frequency Transformer is carried out; Another kind adopts the large bulk capacitance step-down to carry out.But because the shared volume of Industrial Frequency Transformer is bigger, be unsuitable for making small-sized, particularly miniature, portable charger; And charge with capacitance decompression, dependability, fail safe are relatively poor.The circuit arrangement that quick charge is also arranged in the charger of the above type, because what rechargeable battery such as nickel-cadmium cell adopted is sintered electrode technology, nickel-cadmium cell with 0.5HA is an example, discharging current can reach more than the 10A in short-term, so it is feasible that charging current reaches about 2.5A, though and large current charge can shorten the charging interval, but increase the degree of heat of battery easily, this mainly is because there is the fluctuation of charging current in charger, therefore to reduce the degree of heat of large current charge battery, just require to reduce the fluctuation of charging current as far as possible, also promptly require charger can provide Alternating Component few, output has the big electric current of charging of better constant-current characteristics.Traditional solution is to add complicated constant-current circuit at output, and this capacity to general Industrial Frequency Transformer will correspondingly be obtained bigger, thereby all is difficult to the requirement that reaches desirable on weight, volume and the cost of manufacture of charger.
The purpose of this utility model is in order to overcome the deficiency of above-mentioned existence, and provides a kind of simple and reliable for structure, small-sized nickel-cadmium cell quick charger safe and convenient to use.
The purpose of this utility model is finished by following technical solution, be that charging circuit is made up of rectification and frequency conversion loop etc., the commutating circuit that constitutes by bridge rectifier, its anodal output inserts on the centre tap of the elementary winding of variable-frequency transformer in the frequency conversion loop, and negative pole output inserts frequency-converter tube BG in the frequency conversion loop
1Emitter on, and the both sides tap of the elementary winding of variable-frequency transformer B respectively with frequency-converter tube BG
1Collector electrode and base stage join.
The purpose of this utility model also can further be finished by following scheme, is in series with current limiting capacitance C in the front portion of described commutating circuit
1
The utility model also inserts triode BG in the protection loop that is being parallel on the output at its intermediate point of sampling loop that frequency conversion loop output is parallel with variable resistor W
2On the base stage.
The utility model also is parallel with triode BG at frequency conversion loop output
3With relay J stop filling loop, this triode BG
3Base stage and triode BG
2Collector electrode join, be serially connected with normally open contact JK in the commutating circuit front portion.
The utility model is parallel with bigger filter capacitor C at frequency conversion loop output
5, the adding of this electric capacity makes that the big electric current of charging is more level and smooth, Alternating Component is fewer, although (being what not allow with this electric capacity in the general charger, because low current charge will have certain fluctuation composition) has certain effect to the degree of heat that alleviates rechargeable battery.
Description of drawings is as follows:
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is a charging circuit schematic diagram of the present utility model.
Below will the utility model is further introduced: Fig. 1 by accompanying drawing, charger is by housing 1, attaching plug 2 compositions such as grade, and the top fixed in position in housing 1 has charging circuit board 3, bottom in the housing 1 is provided with battery tray 4, installs in it for rechargeable battery; The upper face of housing 1 then device push switch 5 and indicator light 6 are arranged.Thereby battery tray 4 is provided with and links to each other with housing 1 and can upwards dig the transparency cover of opening 7.During use, will be recharged the pond and put in the battery case 4, plug 2 energized that plug in, Push switch 5 then, make charger work, and indicator light 6 bright expressions this moment are charged, and when charging finishes, charger can be cut off the electricity supply automatically, and indicator light 6 extinguishes.Concrete charging circuit is seen Fig. 2, and charging circuit mainly is made up of commutating circuit and frequency conversion loop, and commutating circuit is by four diode D
1～D
4Form the bridge rectifier loop, and be in series with current limiting capacitance C in its front portion
1, this current limiting capacitance C
1Adding following several benefits is arranged: first makes back level output that constant-current characteristics preferably be arranged, for whole charger provides a kind of comparatively simple and practical constant-current source; Second makes to the frequency-converter tube BG in the frequency conversion loop
1Greatly reduce with the requirement of variable-frequency transformer B; The 3rd makes the back level not be afraid of short circuit; The 4th needs to change C
1Capacity, can change the size of output current; Current limiting capacitance C in a word
1Adding make the reliability of whole charging circuit, fail safe greatly improves, and can make structure more simple and practical.Be connected to the frequency conversion loop after the commutating circuit, this frequency conversion loop is by frequency-converter tube BG
1Constitute with variable-frequency transformer B, the positive pole output of commutating circuit inserts on the centre tap of the elementary winding of variable-frequency transformer B in the frequency conversion loop, and negative pole output inserts frequency-converter tube BG in the frequency conversion loop
1On the emitter, and the both sides tap of the elementary winding of variable-frequency transformer B respectively with frequency-converter tube BG
1Collector electrode and base stage join.Be in series with a diode D on the secondary output cathode end in frequency conversion loop
6, insert then on battery tray two is extreme.In order to make the big electric current of charging more level and smooth, Alternating Component is fewer, thereby reduces the degree of heat of rechargeable battery, is parallel with filter capacitor C at secondary output end
5, and link filter capacitor C
5Generally be applicable to big electric current quick charge, conventional charger (charging at a slow speed) is inapplicable and link this capacitor C
5Also be parallel with the sampling loop that constitutes by a variable resistor W at secondary output end; also available obviously two resistances of this sampling loop different or wherein a variable-resistance resistance replace, the intermediate point of sampling loop inserts the triode BG in the protection loop on being parallel to secondary output end
2Base stage on, and on secondary output end, also be parallel with triode BG
3With relay J series connection stop filling loop, this triode BG
3Base stage be connected on triode BG
2Collector electrode on.Be in series with the normally open contact JK loop in parallel corresponding to relay J at the front end of commutating circuit with push switch AN.Work as energized, press switch, electric current at first passes through current limiting capacitance C
1Step-down is then by D
1～D
4The bridge rectifier loop and the capacitor C that constitute
2Rectification and filtering after obtain direct voltage, again by by triode BG
1With the frequency conversion loop of formation such as transformer B direct current is become the superaudio electric currents that number picks up KH, this electric current is through diode D
6After the rectification again by capacitor C
5Can obtain level and smooth continuous current after the filtering battery is charged, relay J is because BG simultaneously
3Conducting and adhesive normally open contact JK closure, release button switch AN at this moment, still self-locking of relay J, when the voltage (promptly being recharged pond both positive and negative polarity terminal voltage) of output raise, the middle point voltage of sampling loop also raise, when being raised to certain value, triode BG
2Conducting and BG
3End, the relay J outage discharges, and normally opened contact JK disconnects, and the charging end just can change output setting automatic stop voltage if change resistance W intermediate point position in the foregoing circuit, and above-mentioned automatic stop process is the safeguard protection process.Among Fig. 2, be example: R to fill the quick charge in 15 minutes of two joint 0.5AH nickel-cadmium cells
1=50 Ω, R
2=R
3=300K, R
4=5.1K, R
5=20 Ω, R
6=100 Ω, W=22K, C
1=5 μ/250V, C
2=22 μ/160V, C
3=0.01 μ/400V, C
4=22 μ/16V, C
5=1000 μ/16V, D
1～D
5Be 1N1007, D
6Be 5A/100V high-frequency diode, D
7Be light-emitting diode, BG
1Be JE13003, BG
2, BG
3Be 3DG12, the magnetic core of transformer Φ 1cm, L5CM, L
1Be 300 circles, L
2Be 15 circles, L
3Be 15 circles; Relay J is with 4088, and coil voltage is 3V.
The utility model has been owing to adopted Frequency Conversion Theory, and adds current limiting capacitance in frequency changer circuit prime loop, thereby has simple in structurely, uses reliable, safety, and volume is little, and is in light weight, and can quick charge etc. characteristics.
Claims (5)
1, a kind of small-sized nickel-cadmium cell quick charger, include housing, attaching plug and the battery tray that in housing, is provided with, charging circuit etc., it is characterized in that described charging circuit mainly is made up of rectification, frequency conversion loop etc., the positive pole output in bridge rectifier loop inserts on the centre tap of the elementary winding of variable-frequency transformer B in the frequency conversion loop, and negative pole output inserts the frequency-converter tube BG in the frequency conversion loop
1Emitter on, and the both sides tap of the elementary winding of variable-frequency transformer B respectively with frequency-converter tube BG
1Collector electrode and base stage join.
2, small-sized nickel-cadmium cell quick charger as claimed in claim 1 is characterized in that the front portion of described commutating circuit is in series with current limiting capacitance C
1
3, small-sized nickel-cadmium cell quick charger as claimed in claim 1 or 2 is characterized in that frequency conversion loop output is parallel with the sampling loop that is made of variable resistor W, triode BG in its intermediate point access protection loop on being parallel to output
2Base stage on.
4, small-sized nickel-cadmium cell quick charger as claimed in claim 3 is characterized in that described frequency conversion loop output also is parallel with triode BG
3What be connected in series with relay J stops filling loop, this triode BG
3Base stage and triode BG
2Collector electrode join, be serially connected with normally open contact JK in the commutating circuit front portion.
5, small-sized nickel-cadmium cell quick charger as claimed in claim 4 is characterized in that described frequency conversion loop output is parallel with filter capacitor C
5
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93200927 CN2149050Y (en) | 1993-01-01 | 1993-01-01 | Small-size fast charger for Ni-Cd battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93200927 CN2149050Y (en) | 1993-01-01 | 1993-01-01 | Small-size fast charger for Ni-Cd battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2149050Y true CN2149050Y (en) | 1993-12-08 |
Family
ID=33785560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93200927 Expired - Fee Related CN2149050Y (en) | 1993-01-01 | 1993-01-01 | Small-size fast charger for Ni-Cd battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2149050Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102946219A (en) * | 2012-11-05 | 2013-02-27 | 苏州汇川技术有限公司 | Motor drive system and energy feedback brake control method of motor drive system |
| CN103138359A (en) * | 2013-03-20 | 2013-06-05 | 张家港市华为电子有限公司 | Three-phase industrial frequency transformer type charging device |
-
1993
- 1993-01-01 CN CN 93200927 patent/CN2149050Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102946219A (en) * | 2012-11-05 | 2013-02-27 | 苏州汇川技术有限公司 | Motor drive system and energy feedback brake control method of motor drive system |
| CN102946219B (en) * | 2012-11-05 | 2014-04-16 | 苏州汇川技术有限公司 | Motor drive system and energy feedback brake control method of motor drive system |
| CN103138359A (en) * | 2013-03-20 | 2013-06-05 | 张家港市华为电子有限公司 | Three-phase industrial frequency transformer type charging device |
| CN103138359B (en) * | 2013-03-20 | 2015-08-19 | 张家港市华为电子有限公司 | A kind of three-phase industrial frequency transformer type charging device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |