CN105790332A - Automatic power-off charger - Google Patents
Automatic power-off charger Download PDFInfo
- Publication number
- CN105790332A CN105790332A CN201410816384.4A CN201410816384A CN105790332A CN 105790332 A CN105790332 A CN 105790332A CN 201410816384 A CN201410816384 A CN 201410816384A CN 105790332 A CN105790332 A CN 105790332A
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- CN
- China
- Prior art keywords
- circuit
- control circuit
- rechargeable battery
- controlled switch
- charging circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses an automatic power-off charger which comprises a case, a rechargeable battery, a charging circuit, a control circuit and a controllable switch control circuit, wherein the rechargeable battery, the charging circuit, the control circuit and the controllable switch control circuit are arranged in the case; the charging circuit is connected with the rechargeable battery and is used for charging the rechargeable battery; the control circuit is connected with the charging circuit and is used for controlling the working state of the charging circuit; and the controllable switch control circuit is use for detecting a voltage of the rechargeable battery and automatically cutting off the charging circuit when the voltage of the rechargeable battery reaches a preset voltage value. The automatic power-off charger detects the voltage of the rechargeable battery by the controllable switch control circuit and automatically cuts off the charging circuit when the voltage of the rechargeable battery reaches the preset voltage value; the working state of the charging circuit is detected online; the condition that the circuit is automatically cut off when the charger reaches the full state is ensured; the problem that a storage battery is easily charged to bulge and explode under the unattended condition is solved; and the automatic power-off charger is simple in circuit structure, low in cost, stable and reliable.
Description
Technical field
The present invention relates to a kind of charger, particularly to a kind of charger automatically powered off.
Background technology
When using lithium battery, discovery battery electric quantity is inadequate, need battery is charged, charging circuit is the core component of the normal operation of charger, if not power-off after rechargeable battery is fully charged, causing and overcharge phenomenon thus damaging rechargeable battery, therefore, it is particularly significant whether on-line checking charging reaches fully charged state.Charged state can be reached, it is thus desirable to a kind of, the charger that fully charged state automatically powers off.
Summary of the invention
In view of this, the technical problem to be solved is to provide a kind of charger automatically powered off.
The object of the present invention is achieved like this:
A kind of charger automatically powered off provided by the invention, including casing, rechargeable battery, charging circuit, control circuit and gate-controlled switch control circuit；
Described casing is provided with the groove placing rechargeable battery；
Described charging circuit, charging circuit, control circuit and gate-controlled switch control circuit are arranged in casing；
Described charging circuit is connected with rechargeable battery for rechargeable battery is charged；
Described control circuit is connected the duty for controlling charging circuit with charging circuit；
Described gate-controlled switch control circuit, for detecting the voltage of rechargeable battery and automatically cutting off charging circuit when charged battery voltage reaches preset voltage value.
Further, described gate-controlled switch control circuit includes voltage self-checking circuit, bleeder circuit, reference voltage source, comparator and magnetic silicon controlled switch circuit；
Described voltage self-checking circuit is connected the magnitude of voltage for obtaining rechargeable battery two ends with rechargeable battery；Described voltage self-checking circuit connects the first input end of comparator by bleeder circuit, and described reference voltage source connects the second input of comparator；Described magnetic silicon controlled switch circuit connects between charging circuit and rechargeable battery；The end that controls of described magnetic silicon controlled switch circuit is connected the break-make for controlling magnetic silicon controlled switch circuit with the outfan of comparator.
Further, described gate-controlled switch control circuit is additionally provided with display lamp；Described display lamp is connected with control circuit, is used for showing off-position.
Further, described gate-controlled switch control circuit also include by compressing switch, switch lever and elastic washer；
Described arrange in casing by compressing switch；Described by compressing switch and casing junction is provided with elastic washer；Described by compressing switch for passing through to press down the on off operating mode controlling gate-controlled switch control circuit；Described by compressing switch and being provided with preset clearance between casing, the gap width of described preset clearance is slightly less than the amount of elastic deformation of elastic washer.
The beneficial effects of the present invention is: the present invention adopts gate-controlled switch control circuit to detect the voltage of rechargeable battery and to automatically cut off charging circuit when charged battery voltage reaches preset voltage value.The duty of on-line checking charging circuit, it is ensured that charger is automatic shutoff circuit when reaching fully charged state, solve accumulator in unserviced situation easily fill drum fill quick-fried problem；This circuit structure is simple, cost is low and reliable and stable.
Accompanying drawing explanation
In order to make the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail, wherein:
The charger schematic diagram automatically powered off that Fig. 1 provides for the embodiment of the present invention；
The gate-controlled switch control circuit figure that Fig. 2 provides for the embodiment of the present invention.
Detailed description of the invention
Hereinafter with reference to accompanying drawing, the preferred embodiments of the present invention are described in detail.Should be appreciated that preferred embodiment is only for illustrating the present invention, rather than in order to limit the scope of the invention.
As it can be seen, a kind of charger automatically powered off provided by the invention, including casing, rechargeable battery, charging circuit, control circuit and gate-controlled switch control circuit；
Described casing is provided with the groove placing rechargeable battery；
Described charging circuit, charging circuit, control circuit and gate-controlled switch control circuit are arranged in casing；
Described charging circuit is connected with rechargeable battery for rechargeable battery is charged；
Described control circuit is connected the duty for controlling charging circuit with charging circuit；
Described gate-controlled switch control circuit, for detecting the voltage of rechargeable battery and automatically cutting off charging circuit when charged battery voltage reaches preset voltage value.
Described gate-controlled switch control circuit includes voltage self-checking circuit, bleeder circuit, reference voltage source, comparator and magnetic silicon controlled switch circuit；
Described voltage self-checking circuit is connected the magnitude of voltage for obtaining rechargeable battery two ends with rechargeable battery；Described voltage self-checking circuit connects the first input end of comparator by bleeder circuit, and described reference voltage source connects the second input of comparator；Described magnetic silicon controlled switch circuit connects between charging circuit and rechargeable battery；The end that controls of described magnetic silicon controlled switch circuit is connected the break-make for controlling magnetic silicon controlled switch circuit with the outfan of comparator.
Described gate-controlled switch control circuit is additionally provided with display lamp；Described display lamp is connected with control circuit, is used for showing off-position.
Described gate-controlled switch control circuit also includes by compressing switch, switch lever and elastic washer；
Described arrange in casing by compressing switch；Described by compressing switch and casing junction is provided with elastic washer；Described by compressing switch for passing through to press down the on off operating mode controlling gate-controlled switch control circuit；Described by compressing switch and being provided with preset clearance between casing, the gap width of described preset clearance is slightly less than the amount of elastic deformation of elastic washer.
The charging circuit principle that the present embodiment provides is as follows:
Electricity routing transformer, diode and voltage stabilizing IC7805 provide+5V supply voltage, and cell voltage sends into the BAT end of chip after resistance R5, R6 dividing potential drop, provide sampling voltage for it.Resistance pressure-dividing network is input to the resistance of BAT end and is no less than 200k Ω.When TM end ground connection, filling charge rate accordingly soon is 1C, and filling the time of supplying soon is 80min.
What finally illustrate is, above example is only in order to illustrate technical scheme and unrestricted, although by referring to the preferred embodiments of the present invention, invention has been described, but it will be understood by those within the art that, in the form and details it can be made various change, without departing from the spirit and scope that the present invention limits.
Claims (4)
1. the charger automatically powered off, it is characterised in that: include casing, rechargeable battery, charging circuit, control circuit and gate-controlled switch control circuit；
Described casing is provided with the groove placing rechargeable battery；
Described charging circuit, charging circuit, control circuit and gate-controlled switch control circuit are arranged in casing；
Described charging circuit is connected with rechargeable battery for rechargeable battery is charged；
Described control circuit is connected the duty for controlling charging circuit with charging circuit；
Described gate-controlled switch control circuit, for detecting the voltage of rechargeable battery and automatically cutting off charging circuit when charged battery voltage reaches preset voltage value.
2. the charger automatically powered off according to claim 1, it is characterised in that: described gate-controlled switch control circuit includes voltage self-checking circuit, bleeder circuit, reference voltage source, comparator and magnetic silicon controlled switch circuit；
Described voltage self-checking circuit is connected the magnitude of voltage for obtaining rechargeable battery two ends with rechargeable battery；Described voltage self-checking circuit connects the first input end of comparator by bleeder circuit, and described reference voltage source connects the second input of comparator；Described magnetic silicon controlled switch circuit connects between charging circuit and rechargeable battery；The end that controls of described magnetic silicon controlled switch circuit is connected the break-make for controlling magnetic silicon controlled switch circuit with the outfan of comparator.
3. the charger automatically powered off according to claim 1, it is characterised in that: described gate-controlled switch control circuit is additionally provided with display lamp；Described display lamp is connected with control circuit, is used for showing off-position.
4. the charger automatically powered off according to claim 1, it is characterised in that: described gate-controlled switch control circuit also includes by compressing switch, switch lever and elastic washer；
Described arrange in casing by compressing switch；Described by compressing switch and casing junction is provided with elastic washer；Described by compressing switch for passing through to press down the on off operating mode controlling gate-controlled switch control circuit；Described by compressing switch and being provided with preset clearance between casing, the gap width of described preset clearance is slightly less than the amount of elastic deformation of elastic washer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410816384.4A CN105790332A (en) | 2014-12-25 | 2014-12-25 | Automatic power-off charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410816384.4A CN105790332A (en) | 2014-12-25 | 2014-12-25 | Automatic power-off charger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105790332A true CN105790332A (en) | 2016-07-20 |
Family
ID=56377529
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410816384.4A Pending CN105790332A (en) | 2014-12-25 | 2014-12-25 | Automatic power-off charger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105790332A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108448681A (en) * | 2018-04-10 | 2018-08-24 | 广东力科新能源有限公司 | A kind of online method for detecting of the charger of battery management system |
| CN111746316A (en) * | 2020-07-13 | 2020-10-09 | 徐州久胜电子科技有限公司 | Automatic power-off charger for electric vehicle |
-
2014
- 2014-12-25 CN CN201410816384.4A patent/CN105790332A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108448681A (en) * | 2018-04-10 | 2018-08-24 | 广东力科新能源有限公司 | A kind of online method for detecting of the charger of battery management system |
| CN111746316A (en) * | 2020-07-13 | 2020-10-09 | 徐州久胜电子科技有限公司 | Automatic power-off charger for electric vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160720 |
|
| WD01 | Invention patent application deemed withdrawn after publication |