CN209250296U - A kind of wide pressure output automatic identification charger - Google Patents
A kind of wide pressure output automatic identification charger Download PDFInfo
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- CN209250296U CN209250296U CN201822155834.6U CN201822155834U CN209250296U CN 209250296 U CN209250296 U CN 209250296U CN 201822155834 U CN201822155834 U CN 201822155834U CN 209250296 U CN209250296 U CN 209250296U
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Abstract
The utility model discloses a kind of wide pressure output automatic identification chargers, the charger includes transformer, single relay or multiple relay assemblies, mcu, the winding that the primary coil of the transformer of the charger is together in series by 2 or 2 or more forms, keep the number of turns of inductive secondary constant, the number of turns that primary coil is adjusted by relay, generates different charging voltages；The switching of relay is that the mcu of the charger is automatically performed.Allow single charger that there can be different voltage output ranges, the versatility of charger is all right.One charger can charge to the battery of multiple voltage specifications.Using the judgement to battery voltage, moreover it is possible to complete the automatic identification of voltage and the automatic charging of polytypic battery.
Description
Technical field
Electronic technology field, specially a kind of charger.
Background technique
At present charger be substantially using HF switch PWM control.The first extremely secondary pole of its high-frequency power transformer
The number of turns of coil, be according to the output power of charger, the range of output voltage, the saturation magnetic flux of magnetic material, coil resistance
What the factors such as rate and sectional area were fixed.The turn ratio of first pole secondary coil, just determines the ceiling voltage range of charger output.
But battery is during the charging process, minimum voltage and ceiling voltage range are very big.If the turn ratio of transformer coil is biased to
In low-voltage section, then the voltage and power in high-voltage charging stage just do not increase；If the turn ratio of transformer coil is partial to high electricity
The pressure stage, then low pressure charging stage charger efficiency is low.In addition because the turn ratio of power transformer secures, highest output electricity
Pressure also secures.So a kind of charger of specific voltage can only fill a kind of battery of voltage, versatility is not strong.Such as 60v
Charger, 48v and 72v battery cannot be filled.But the battery of 48v, 60v, 72v are common again.
Utility model content
In order to describe conveniently, the number of turns and first pole inductance coil of the utility model power transformer time pole inductance coil
The ratio of the number of turns is referred to as " turn ratio "；Change the turn ratio referred to as " no-load voltage ratio "；Realize a variety of no-load voltage ratios multiple relays be referred to as " combination after
Electric appliance ".
The utility model discloses a kind of wide pressure output automatic identification charger, purpose seeks to improve the logical of charger
With property, allow a kind of charger that can fill the battery of multiple voltage.It is even directed to the battery of single voltage, it also will be from low
The pressure stage into the entire charging process of high pressure phase, can allow charger to reach optimum efficiency.
The wide pressure output automatic identification charger of the utility model, including transformer, single relay or multiple relays
Combination, mcu, the winding that the primary coil of the transformer of the charger is together in series by 2 or 2 or more form, and keep secondary
The number of turns of grade inductance coil is constant, and the number of turns of primary coil is adjusted by relay, generates different charging voltages；Relay
Switching is that the mcu of the charger is automatically performed.
Preferably, single relay realizes that the tune of multiple turn ratioes is realized in the adjustment of 2 turn ratioes, the combination of multiple relays
It is whole.
Preferably, the corresponding turn ratio is used according to the charging voltage stage, or sets the different turn ratioes and generates different chargings
Voltage.
Preferably, the mcu of the charger judges the voltage model of battery according to the value of the battery voltage accessed,
Realize voltage automatic identification, the mcu of the charger automatically switches corresponding relay and obtains suitable transformer turns ratio, realizes
Automatic charging.
It keeps time the number of turns of pole inductance coil constant, adjusts the number of turns of inductive primary.The corresponding turn ratio also just obtains
Adjustment.Certain applications can also keep the number of turns of first pole inductance coil constant, adjust the number of turns of inductive secondary.
The number of turns change of inductance coil is switched with relay.Wish coil realizes the change of how many number of turns, just with corresponding
How much banked relays.It suppose that each relay can change the range of 2T, then three relays can be achieved with 2T, 4T, 6T
Variation, which achieves three kinds of different turn ratioes.
If increasing the quantity of banked relay, it is fully able to realize the battery voltage that single charger adapts to 2-8 grades,
Realize the purpose of universal charger.
Each relay control coil turn and banked relay quantity, be according to multiple technical parameters come
Determining, including output power, output voltage range, secondary winding turns, maximum saturation magnetic flux of power transformer etc..
Battery initial voltage value before the charge initiation of the mcu detection access of the charger on this basis, infers
The voltage model of battery out realizes voltage automatic identification, then automatically switches corresponding banked relay and obtain suitable circle
Than realizing the automatic charging of polytypic battery.
The effect of the utility model: the output voltage range of charger is wide, and the voltage-type of energy automatic identification battery
Number, it is automatically adjusted to corresponding output voltage, allows a kind of charger that can fill the battery of multiple voltage, such versatility is all right
?.It is even directed to the battery of single voltage, also in the entire charging process from periods of low pressure to high pressure phase, charging can be allowed
Device reaches optimum state.
Detailed description of the invention
Fig. 1 is 2 heavy no-load voltage ratio schematic diagrames.
Fig. 2 is 3 heavy no-load voltage ratio schematic diagrames.
Specific embodiment
In order to describe conveniently, the output of power conversion transformer secondary can be there are many coil windings, and the utility model is only
Illustrate the operating principle of no-load voltage ratio by wherein one group of the turn ratio.The number of turns of the respectively first pole coil windings of Ti1, Ti2, Ti3, To1,
To2, To3 are respectively the number of turns of secondary coil winding.Equivalent inpnt port InH, InL of transformer referred to as " are inputted ".
First by taking a simplest no-load voltage ratio as an example, as shown in Figure 1, RL is single-pole double-throw relay, T1 is that power conversion becomes
Depressor.
When cut-off, normally-closed contact is connected, and the coil turn for inputting winding is (Ti1+Ti2), 1=To1/ of the turn ratio
(Ti1+Ti2).If the low pressure property of charger is relatively good, and the voltage of output is relatively low, output power with the charging of this turn ratio
It is small.It is connected when relay is opened by normally opened contact, the coil turn for inputting winding is Ti1,2=To1/Ti1 of the turn ratio.If with
The charging of this turn ratio, the high pressure characteristics of charger are relatively good, output power, and output voltage is high.Which achieves 2 heavy no-load voltage ratios, than
Traditional transformer is one more.
And so on, secondary windings 2 also obtains 2 different turn ratioes, To2/ (Ti1+Ti2) and To2/Ti1.
Fig. 2 is the schematic diagram of 3 weight no-load voltage ratios.Only when relay RL1 is connected, the coil turn for inputting winding is (Ti1+
Ti2+Ti3), 1=To1/ of the turn ratio (Ti1+Ti2+ Ti3), at this moment the low pressure property of charger is relatively good, and the voltage of output compares
Low, output power is small.
Only when relay RL2 is connected, the coil turn for inputting winding is (Ti1+Ti2), 2=To1/ of the turn ratio (Ti1+
Ti2), at this moment the middle section voltage characteristic of charger is relatively good.
Only when relay RL3 is connected, the coil turn for inputting winding is Ti1,3=To1/Ti1 of the turn ratio, at this moment charger
High pressure characteristics it is relatively good, the voltage of output is relatively high, output power.
And so on, secondary windings 2 also obtains 3 different turn ratioes, To2/ (Ti1+Ti2+ Ti3), To2/ (Ti1+
Ti2 )、To2/Ti1。
Certainly, as needed, there can also be more secondary windings.
Width pressure output automatic identification charger, it is real by following steps using a kind of above-mentioned charging method of wide pressure output
The automatic identification automatic charging of existing battery.
By taking the voltage automatic identification of common 48v, v60, v72v as an example.
The battery voltage of access is adjusted to the range of 2v-5v through dividing, and the mcu is judged after ADC is converted,
When its voltage value is between 44v-52v, then it is judged as that 48v battery, the mcu switch corresponding banked relay and obtain 48v storage
The corresponding transformer turns ratio of battery realizes the automatic charging of 48v battery.
The battery voltage of access is adjusted to the range of 2v-5v through dividing, and the mcu is judged after ADC is converted,
When its voltage value is between 55v-65v, then it is judged as that 60v battery, the mcu switch corresponding banked relay and obtain 60v storage
The corresponding transformer turns ratio of battery realizes the automatic charging of 60v battery.
The battery voltage of access is adjusted to the range of 2v-5v through dividing, and the mcu is judged after ADC is converted,
When its voltage value is between 66v-78v, then it is judged as that 72v battery, the mcu switch corresponding banked relay and obtain 72v storage
The corresponding transformer turns ratio of battery realizes the automatic charging of 72v battery.
Similarly, the battery of other voltage ranges also can automatic identification, realize polytypic battery automatic charging.
The description of the embodiments and the specification only illustrate the principle of the present utility model and one of example, according to
This principle will also have various changes and improvements, these changes and improvements are all to belong to the rights protection scope of the utility model.
Claims (3)
1. a kind of wide pressure output automatic identification charger, it is characterised in that: the charger includes: transformer, single relay
Or multiple relay assemblies, mcu, the winding that the primary coil of the transformer of the charger is together in series by 2 or 2 or more
Composition, keeps the number of turns of secondary coil constant, and the number of turns of primary coil is adjusted by the relay, generates different charging electricity
Pressure；The switching of the relay is that the mcu of the charger is automatically performed.
2. a kind of wide pressure output automatic identification charger according to claim 1, it is characterised in that: single relay is realized
The adjustment of multiple turn ratioes is realized in the adjustment of 2 turn ratioes, the combination of multiple relays.
3. a kind of wide pressure output automatic identification charger according to claim 1, it is characterised in that: according to charging voltage rank
The corresponding turn ratio of Duan Caiyong, or set the different turn ratioes and generate different charging voltages.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820295061 | 2018-03-02 | ||
| CN2018202950619 | 2018-03-02 |
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| Publication Number | Publication Date |
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| CN209250296U true CN209250296U (en) | 2019-08-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110224452A (en) * | 2018-03-02 | 2019-09-10 | 天津九九电子有限公司 | A kind of wide pressure output automatic identification charger |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110224452A (en) * | 2018-03-02 | 2019-09-10 | 天津九九电子有限公司 | A kind of wide pressure output automatic identification charger |
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