CN105140986A - Temperature detection based charging protection device of charger - Google Patents
Temperature detection based charging protection device of charger Download PDFInfo
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- CN105140986A CN105140986A CN201510529227.XA CN201510529227A CN105140986A CN 105140986 A CN105140986 A CN 105140986A CN 201510529227 A CN201510529227 A CN 201510529227A CN 105140986 A CN105140986 A CN 105140986A
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- circuit
- temperature
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- charger
- control circuit
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Abstract
The invention discloses a temperature detection based charging protection device of a charger. The charging protection device comprises a control circuit and a charging circuit and also comprises a temperature sensor, a voltage-frequency converter, a relay and a protection alarm circuit, wherein the charging circuit is connected with the control circuit; the temperature sensor, the voltage-frequency converter and the input end of the control circuit are sequentially connected; the output end of the control circuit is connected with the relay and the protection alarm circuit respectively; the relay is connected with the charging circuit; the temperature sensor is used for detecting the temperature of the circuit to acquire a simulation signal; the voltage-frequency converter is used for converting into a digital signal; the control circuit is used for processing the acquired temperature value and outputting a control signal according to a comparison result between the temperature value and a preset temperature value; the relay is used for disconnecting or connecting with the charging circuit according to the control signal; and the protection alarm circuit is used for generating an alarm prompt according to the control signal. By the charging protection device, the control circuit can be automatically cut off according to the temperature condition, and the safety coefficient is improved.
Description
Technical field
The present invention relates to a kind of charger charge protection device based on temperature detection, belong to the technical field of charger.
Background technology
For electrical equipment, charger is absolutely necessary charging device.Charger adopts high frequency electric source technology, uses advanced Intelligent Dynamic adjustment charging technique.Charger divides by design circuit operating frequency, power frequency machine and High-frequency machine can be divided into. power frequency machine designs with traditional analog circuit principle, machine intimate electrical device (as transformer, inductance, capacitor etc.) is all larger, generally there is less noise when being with and carrying larger operation, but this type resistance performance in severe power grid environment condition is comparatively strong, and reliability and stability are all strong than High-frequency machine.
Traditional charger generally comprises power supply circuits, single-chip microcomputer, voltage changer and storage battery, utilizes power supply circuits to access power supply, then carries out voltage transformation with Single-chip Controlling voltage changer, finally carry out storage of electrical energy by storage battery.Thus, electrical energy transfer function is realized.
Thus, utilize the charger of small size, just can realize electrical equipment charging.Although charger is easy to use in life, in fact, it still has problems.As application number: in the file of 201110306376.1 applyings date: 2011-10-11, disclose " a kind of charger; this charger is used for a charge electronic devices; this electronic installation comprises at least one first contact, and this charger comprises a housing, and this housing comprises a upper casing and a lower casing; this upper casing is arranged on this lower casing; this upper casing is provided with multiple through hole, and this charger also comprises: at least one lithium battery, and this lithium battery is fixed in this lower casing; One circuit board, this circuit board is fixed in this lower casing, and this circuit board is connected with this lithium battery, and this circuit board comprises at least one second contact, and this second contact is exposed through this through hole; When this first contact and this second contact, this lithium battery charges to this electronic installation ", thus can be charged to electronic installation when there is no civil power by this charger.
And at other one section of application number: in the file of 201310634520.3 applyings date: 2013-11-30, disclose " a kind of charger, comprises pedestal and plug, and described pedestal offers an accommodating groove; described accommodating groove comprises supporting surface, and described plug is arranged on the described supporting surface of described accommodating groove; Described pedestal comprises placed side, described placed side and described supporting surface opposing; A groove is offered in described placed side, and the side that described groove is adjacent with described placed side communicates; Described supporting surface offers groove, and described groove communicates with described groove; Described pedestal also offers a socket, and described socket is electrically connected with described plug ", above-mentioned charger construction is simple, easy to use, avoids outside speaker and the charge port situation that audio plays sound is obstructed when the mobile phone of homonymy charges.
Although above-mentioned document makes improvement to existing charger, make its charge function more perfect.But in fact, its still existing defects.Existing charger fails automatically to detect charger temperature, and especially when charger temperature is too high, cannot realize the Self-disconnecting protection of charger, make charger continuous firing in the environment of high-temperature, coefficient of safety is low, does not utilize the safe handling of charger.
Summary of the invention
Technical problem to be solved by this invention is to overcome the deficiencies in the prior art; a kind of charger charge protection device based on temperature detection is provided; solve existing charger to fail automatically to detect charger temperature, the Self-disconnecting protection of charger cannot be realized, the problem that coefficient of safety is low.
The present invention specifically solves the problems of the technologies described above by the following technical solutions:
A kind of charger charge protection device based on temperature detection, the charging circuit comprising control circuit and be attached thereto, also comprise temperature sensor, voltage-to-frequency converter, relay, protection acknowledge circuit, wherein temperature sensor is connected successively with the input of voltage-to-frequency converter, control circuit; The output of described control circuit with relay, protect acknowledge circuit to be connected respectively; Described relay is connected with charging circuit; Described temperature sensor is used for testing circuit temperature and obtains analog signal; Described voltage-to-frequency converter, for converting described analog signal to digital signal; Described control circuit, for obtaining temperature value to described Digital Signal Processing, and exports control signal according to temperature value and preset temperature value comparing result; Described relay, for disconnecting according to control signal or connection that is closed and charging circuit; Described protection acknowledge circuit, for generating alarm according to control signal.
Further, as a preferred technical solution of the present invention: also comprise electrify restoration circuit, described electrify restoration circuit is connected with the input of control circuit.
Further, as a preferred technical solution of the present invention: also comprise display circuit, described display circuit is connected with the output of control circuit.
Further, as a preferred technical solution of the present invention: described voltage-to-frequency converter adopts AD650 code converter.
Further, as a preferred technical solution of the present invention: described relay adopts AS2PU92 type relay.
The present invention adopts technique scheme, can produce following technique effect:
Charger charge protection device based on temperature detection provided by the invention; utilize the temperature in temperature sensor detection charger; after conversion obtains digital signal; according to the closed of Digital Signals relay or disconnection; circuit is made according to the disconnection certainly of temperature conditions control circuit, effectively to avoid charger to cause potential safety hazard because temperature is too high.Existing charger can be solved fail automatically to detect charger temperature, the Self-disconnecting protection of charger cannot be realized, the problem that coefficient of safety is low.
Accompanying drawing explanation
Fig. 1 is the module diagram of the charger charge protection device that the present invention is based on temperature detection.
Embodiment
Below in conjunction with Figure of description, embodiments of the present invention are described.
As shown in Figure 1, the present invention devises a kind of charger charge protection device based on temperature detection, the charging circuit comprising control circuit and be attached thereto, also comprise temperature sensor, voltage-to-frequency converter, relay, protection acknowledge circuit, wherein can temperature sensor is arranged on the circuit board of charger in the present embodiment; Described temperature sensor is connected successively with the input of voltage-to-frequency converter, control circuit; The output of described control circuit with relay, protect acknowledge circuit to be connected respectively; Described relay is connected with charging circuit; Described temperature sensor is used for testing circuit temperature and obtains analog signal; Described voltage-to-frequency converter, for converting described analog signal to digital signal; Described control circuit, for obtaining temperature value to described Digital Signal Processing, and exports control signal according to temperature value and preset temperature value comparing result; Described relay, for disconnecting according to control signal or connection that is closed and charging circuit; Described protection acknowledge circuit, for generating alarm according to control signal.
Thus, utilize the temperature in temperature sensor detection charger, after conversion obtains digital signal, according to the closed of Digital Signals relay or disconnection, circuit is made according to the disconnection certainly of temperature conditions control circuit, effectively to avoid charger to cause potential safety hazard because temperature is too high.
And circuit is in order to realize defencive function further, and device can also comprise electrify restoration circuit, and described electrify restoration circuit is connected with the input of control circuit.Utilize often execute control relay disconnect and closed after, electrify restoration circuit outputs signal, and control circuit is resetted, regains temperature value.
On this basis, device can also comprise display circuit, and as shown in the figure, described display circuit is connected with the output of control circuit.Display circuit preferably can be arranged on the surface of device, for direct displays temperature value.
Described voltage-to-frequency converter can adopt AD650 code converter.。This AD650 code converter possesses scale frequency high (reaching 1MHz); Very low nonlinearity (be less than 0.002% at 10kHz full scale non-linear hour degree, be less than 0.005% at 100kHz full scale non-linear hour degree, be less than 0.07% at 1MHz full scale non-linear hour degree); Output voltage range wide (as F/V transducer, its output voltage range is 0 ~ 10V); Temperature range wide (-40 ~ 85 DEG C); Can voltage to frequency converter be used as, can be used as FV convertor again.Further, be analog input signal is converted to the frequency output signal corresponding with its voltage magnitude, it is the another kind of form of analog to digital converter, is the circuit that a kind of output frequency is directly proportional to input signal.Utilize the converter of this model to be used as voltage to frequency converter, can be used as FV convertor again, be therefore widely used in this device.
Described relay in a device, can adopt AS2PU92 type relay, AS2PU92 type relay because relay be by coil and contact sets dimerous.
Further, described AS2PU92 type relay is when the change of input variable (energizing quantity) reaches regulation requirement, makes controlled volume that a kind of electrical equipment of predetermined Spline smoothing occurs in electric output circuit.It has control system (also known as input circuit) and by the interactive relationship between control system (also known as output loop).Usually be applied in the control circuit of automation, it is actually the one " automatic switch " going to control big current running with small area analysis.Therefore play the effects such as automatic adjustment, safeguard protection, change-over circuit in circuit.
To sum up; charger charge protection device based on temperature detection provided by the invention; utilize the temperature in temperature sensor detection charger; after conversion obtains digital signal; according to the closed of Digital Signals relay or disconnection; circuit is made according to the disconnection certainly of temperature conditions control circuit, effectively to avoid charger to cause potential safety hazard because temperature is too high.Existing charger can be solved fail automatically to detect charger temperature, the Self-disconnecting protection of charger cannot be realized, the problem that coefficient of safety is low.
By reference to the accompanying drawings embodiments of the present invention are explained in detail above, but the present invention is not limited to above-mentioned execution mode, in the ken that those of ordinary skill in the art possess, can also makes a variety of changes under the prerequisite not departing from present inventive concept.
Claims (5)
1. the charger charge protection device based on temperature detection, the charging circuit comprising control circuit and be attached thereto, it is characterized in that, also comprise temperature sensor, voltage-to-frequency converter, relay, protection acknowledge circuit, wherein temperature sensor is connected successively with the input of voltage-to-frequency converter, control circuit; The output of described control circuit with relay, protect acknowledge circuit to be connected respectively; Described relay is connected with charging circuit; Described temperature sensor is used for testing circuit temperature and obtains analog signal; Described voltage-to-frequency converter, for converting described analog signal to digital signal; Described control circuit, for obtaining temperature value to described Digital Signal Processing, and exports control signal according to temperature value and preset temperature value comparing result; Described relay, for disconnecting according to control signal or connection that is closed and charging circuit; Described protection acknowledge circuit, for generating alarm according to control signal.
2., according to claim 1 based on the charger charge protection device of temperature detection, it is characterized in that: also comprise electrify restoration circuit, described electrify restoration circuit is connected with the input of control circuit.
3., according to claim 1 based on the charger charge protection device of temperature detection, it is characterized in that: also comprise display circuit, described display circuit is connected with the output of control circuit.
4. according to claim 1 based on the charger charge protection device of temperature detection, it is characterized in that: described voltage-to-frequency converter adopts AD650 code converter.
5. according to claim 1 based on the charger charge protection device of temperature detection, it is characterized in that: described relay adopts AS2PU92 type relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510529227.XA CN105140986A (en) | 2015-08-26 | 2015-08-26 | Temperature detection based charging protection device of charger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510529227.XA CN105140986A (en) | 2015-08-26 | 2015-08-26 | Temperature detection based charging protection device of charger |
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| Publication Number | Publication Date |
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| CN105140986A true CN105140986A (en) | 2015-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510529227.XA Pending CN105140986A (en) | 2015-08-26 | 2015-08-26 | Temperature detection based charging protection device of charger |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105846505A (en) * | 2016-05-18 | 2016-08-10 | 常州市武进金阳光电子有限公司 | Novel charger |
| CN110133412A (en) * | 2019-05-31 | 2019-08-16 | 杭州元朗智能科技有限公司 | A kind of charger test macro with temperature detecting function |
| CN112531846A (en) * | 2020-12-08 | 2021-03-19 | 安徽信息工程学院 | Charger protection monitoring device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203445596U (en) * | 2013-08-07 | 2014-02-19 | 深圳市力能加电站有限公司 | Charging interface protection circuit and charger |
| US20140266016A1 (en) * | 2012-01-16 | 2014-09-18 | Huawei Device Co., Ltd. | Charging Circuit and Charger |
-
2015
- 2015-08-26 CN CN201510529227.XA patent/CN105140986A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140266016A1 (en) * | 2012-01-16 | 2014-09-18 | Huawei Device Co., Ltd. | Charging Circuit and Charger |
| CN203445596U (en) * | 2013-08-07 | 2014-02-19 | 深圳市力能加电站有限公司 | Charging interface protection circuit and charger |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105846505A (en) * | 2016-05-18 | 2016-08-10 | 常州市武进金阳光电子有限公司 | Novel charger |
| CN110133412A (en) * | 2019-05-31 | 2019-08-16 | 杭州元朗智能科技有限公司 | A kind of charger test macro with temperature detecting function |
| CN112531846A (en) * | 2020-12-08 | 2021-03-19 | 安徽信息工程学院 | Charger protection monitoring device |
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Application publication date: 20151209 |