CN201126977Y - Charger capable of preventing self-discharge - Google Patents
Charger capable of preventing self-discharge Download PDFInfo
- Publication number
- CN201126977Y CN201126977Y CNU2007201943338U CN200720194333U CN201126977Y CN 201126977 Y CN201126977 Y CN 201126977Y CN U2007201943338 U CNU2007201943338 U CN U2007201943338U CN 200720194333 U CN200720194333 U CN 200720194333U CN 201126977 Y CN201126977 Y CN 201126977Y
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The utility model provides a self-discharge/charge preventer, comprising a transformer, a main charging loop, a control circuit, wherein the main charging loop is a controllable silicon rectification circuit, the control circuit is a R-S trigger, output of a voltage comparer (1) is connected with control end (a) for controlling the R-S trigger and a time counter simultaneously; when the reference voltage Vo of the voltage comparer (1) is the voltage used by control end (a) to control the R-S trigger to charge and the time counter to start timing when the battery voltage is lower than Vo; the voltage comparer (2) is connected with a control end (b) for controlling the R-s trigger; when the reference voltage V<1> is configured to be battery voltage lower than V<1>, the control end (b) controls the R-S trigger to shut down; the output end of the time counter is connected with control end (b) of the R-s trigger, wherein the time is configured as T, when starting time of the R-S trigger reaches T, the R-S trigger shuts down.
Description
Technical field
The utility model relates to a kind of self discharge charger that prevents, this device is used for the storage battery of self discharge is carried out boost charge, guarantees that storage battery is in optimum state constantly.
Background technology
Any storage battery all has self-discharge phenomenon, is one of fundamental characteristics of storage battery, and in general, the manufacturing process of self discharge and storage battery is relevant, and is simultaneously also relevant with the ambient temperature of battery stores.Temperature is high more, and self discharge is serious more.In order to remedy the capacitance loss that self discharge causes storage battery, use the method for charging usually, and make the method for so-called constant voltage charge usually.This is crossed (degree) for fear of storage battery to fill () (overcharge).It is irremediable overcharging the harm that storage battery is caused.But low current charge also has adverse influence to storage battery for a long time, for example: can't grasp correct charge volume and may produce sulfuration or the like.
For starting type accumulators, most important performance can start the engine exactly, and the result of self discharge descends the capacity of storage battery and can not start, and for the torrid areas, this problem is that all battery manufacturers are felt the problem of having a headache.Because can not guarantee after storage battery dispatches from the factory to use in a short period of time.So often cause " storage battery because of self discharge lost efficacy " consequence.Such storage battery need carry out boost charge.This is the expensive thing of taking a lot of work.
Summary of the invention
The purpose of this utility model is a kind of self discharge charger that prevents that designs for the decline that solves the accumulator property that causes because of self discharge, before storage battery uses, it can be connected on the storage battery for a long time charges to storage battery, make storage battery remain " electric power abundant ", but guarantee that storage battery can never be overcharged.
The technical solution of the utility model: the self discharge charger that prevents of the present utility model comprises transformer, charging major loop, control circuit, the charging major loop is a SCR rectification circuit, control circuit is the R-S trigger, and the output of voltage comparator 1 is connected with time counter with the control end a that control R-S trigger is opened simultaneously; The reference voltage V o of voltage comparator 1 is the battery tension voltage that control end a control R-S flip-flop toggle charging and time counter pick up counting when being lower than Vo; Voltage comparator 2 is connected with the control end b that control R-S trigger closes; The reference voltage V of voltage comparator 2
1Be set at battery tension and be lower than V
1The time control end b control R-S trigger close; The time of time counter is connected with the control end b that the R-S trigger closes to output, and timing is T, and the R-S flip-flop toggle time, the R-S trigger cut out when reaching T.
Advantage of the present utility model: the utility model is that a kind of battery capacity that can keep for a long time can not cause the charger that overcharges again.The utility model can reduce (or avoiding) because of the influence to accumulator property that self discharge causes, and is suitable for the long term storage storage battery, and he can prevent the loss of capacity on the one hand, can also guarantee not overcharge simultaneously.
Description of drawings
Fig. 1 is an electrical schematic diagram of the present utility model.
Embodiment
Principle and execution mode below by example explanation utility model:
Fig. 1 is an electrical schematic diagram of the present utility model: comprise transformer, charging major loop, control circuit, voltage comparator circuit and time counter.The charging major loop is a SCR rectification circuit, and control circuit is the R-S trigger, and the output of voltage comparator 1 is connected with time counter with the control end a that control R-S trigger is opened simultaneously; Voltage comparator 1 and time counter are used for controlling starting with timing storage battery E are charged; The reference voltage V o of voltage comparator 1 is that battery tension need replenish electricity when being lower than Vo, and the output R-S of voltage comparator 1 makes trigger control end a control R-S flip-flop toggle, begins charging, and time counter picks up counting; The time counter timing is T, and the R-S flip-flop toggle time, when promptly charge in batteries reached T, the time of time counter turn-offed the R-S trigger to output control terminal b, and charging stops.Time counter calculates the accumulative total charging interval, prevents to overcharge.
Voltage comparator 2 is connected with the control end b that control R-S trigger closes; Voltage comparator 2 is protectiveness settings, reference voltage V
1Be set at battery tension and be lower than V
1The existing fault of time explanation storage battery can not be charged, when battery tension is lower than reference voltage V
1The time, comparator 2 output control control R-S trigger control end b, control R-S trigger cuts out, and can not start charging.
D1 is yellow alarm LED, and D2 is an indicator light red LED during counter works is promptly charged, and D3 is that green LED is finished in boost charge, and A is a reverser.When the detection accumulator voltage was lower than 9V, D1 warning yellow led was bright; When storage battery was carried out boost charge, the D2 red LED was bright; After accumulator voltage rose to Vo, boost charge was finished, and red LED is gone out, and the D3 green LED is bright.
After transformer is connected external power, and storage battery inserts the charging major loop, the continual monitoring battery tension of comparison circuit, and if only if battery tension is less than set-point V
0The time, the charging major loop begins storage battery is charged, and be T when the charging interval at every turn, and T counts AH according to the ampere-hour that charge volume reaches certain setting
0Set.After charging stopped, the testing circuit comparator was started working.So go round and begin again, never stop.
Notice three primary conditions:
1. the present invention only is used for new accumulator.
2. Chong Dian condition is to have influenced startability (off-capacity) because of self discharge drops to battery tension.
3. the ampere-hour number of charge capacity setting only is below 10% of battery nominal capacity, and it can not cause overcharge.
Theoretically, if the AH of design
0Just below 10% of battery nominal capacity can not overcharge under these conditions.
(3) the present invention need connect AC power supplies, and the both positive and negative polarity of output need directly be connected the both positive and negative polarity of storage battery.
(4) V
0And AH
0Need determine according to local condition.
As: rated voltage is the storage battery of 12.00V, and Vo selects between the 12.45V-12.67V.V
1Be made as 9V, of a specified duration excessively when battery stores, voltage is lower than reference voltage V
1In the time of (9V), this battery should not recharge.
In addition, charger adopts the pulse charge-discharge circuit, discharges and recharges the ratio of pulse duration, between 5: 1 to 100: 1.
This device is used for the storage battery of self discharge is carried out boost charge, guarantees that storage battery is in optimum state constantly.
Claims (1)
1. one kind prevents the self discharge charger, comprise transformer, charging major loop, control circuit, it is characterized in that: the charging major loop is a SCR rectification circuit, control circuit is the R-S trigger, and the output of voltage comparator (1) is connected with time counter with the control end (a) that control R-S trigger is opened simultaneously; The reference voltage V o of voltage comparator (1) is a battery tension when being lower than Vo, the voltage that control end (a) control R-S flip-flop toggle charging and time counter pick up counting; Voltage comparator (2) is connected with the control end (b) that control R-S trigger closes; The reference voltage V of voltage comparator (2)
1Be set at battery tension and be lower than V
1The time, control end (b) control R-S trigger cuts out; The time counter time is connected with the control end (b) that the R-S trigger closes to output, and timing is T, and the R-S flip-flop toggle time, the R-S trigger cut out when reaching T.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201943338U CN201126977Y (en) | 2007-12-12 | 2007-12-12 | Charger capable of preventing self-discharge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201943338U CN201126977Y (en) | 2007-12-12 | 2007-12-12 | Charger capable of preventing self-discharge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201126977Y true CN201126977Y (en) | 2008-10-01 |
Family
ID=40000441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201943338U Expired - Fee Related CN201126977Y (en) | 2007-12-12 | 2007-12-12 | Charger capable of preventing self-discharge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201126977Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245372A (en) * | 2012-02-13 | 2013-08-14 | 富泰华工业（深圳）有限公司 | Detection circuit of electric bridge sensor |
-
2007
- 2007-12-12 CN CNU2007201943338U patent/CN201126977Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245372A (en) * | 2012-02-13 | 2013-08-14 | 富泰华工业（深圳）有限公司 | Detection circuit of electric bridge sensor |
| CN103245372B (en) * | 2012-02-13 | 2017-04-12 | 富泰华工业（深圳）有限公司 | Detection circuit of electric bridge sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081001 Termination date: 20101212 |