CN202268715U - Charging device possessing overcharge detection protection function - Google Patents
Charging device possessing overcharge detection protection function Download PDFInfo
- Publication number
- CN202268715U CN202268715U CN2011203247027U CN201120324702U CN202268715U CN 202268715 U CN202268715 U CN 202268715U CN 2011203247027 U CN2011203247027 U CN 2011203247027U CN 201120324702 U CN201120324702 U CN 201120324702U CN 202268715 U CN202268715 U CN 202268715U
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- circuit
- switch element
- short
- charging device
- microprocessor
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The embodiment of the utility model discloses a charging device possessing an overcharge detection protection function, comprising a power supply unit, a switch element, a short circuit detection circuit connected with the switch element and used for detecting the state parameters of the switch element before and/or after the charging, a microprocessor connected with the short circuit detection circuit and used for determining whether the switch element is in short circuit according to the state parameters, and a short circuit protection circuit connected between the power supply unit and the microprocessor and used for controlling the power supply unit to stop supplying the switch element with power when the microprocessor determines that the switch element is in short circuit. By employing the short circuit detection circuit and the short circuit protection circuit, the charging device of the embodiment of the utility model can detect the switch element before and after charging to thereby lock a control circuit and a pulse-width modulation (PWM) circuit in time when the switch element loses efficacy and is in short circuit, so that the charging device stops charging a battery, potential safety hazards are eliminated, and the accidents are avoided, such as fire, explosion, etc.
Description
Technical field
The utility model relates to charging technique, relates in particular to a kind of charging device that overcharges the detection defencive function that has.
Background technology
Because the relay in the existing charging device is under the higher temperature environment for a long time; Make on-off action before and after the charging again times without number; Thereby cause easily can not resetting after the reed outage of relay, be called the inefficacy short circuit of relay, at this moment if continue that charging may cause that chargeable battery is on fire, blast etc.; Have serious potential safety hazard, and existing charging device can not be eliminated this potential safety hazard.
The utility model content
The utility model embodiment technical problem to be solved is, a kind of charging device that overcharges the detection defencive function that has is provided, automatic blocking protection when switch element inefficacy short circuit.
In order to solve the problems of the technologies described above, the utility model embodiment has proposed a kind of charging device that overcharges the detection defencive function that has, and is provided with power supply unit, also comprises: the switch element that is connected in the said power supply unit and the chargeable battery of outside; Be connected in short-circuit detecting circuit said switch element, detect the state parameter of said switch element in order to the preceding and/or charging back of charging; Be connected in said short-circuit detecting circuit to judge the whether microprocessor of short circuit of said switch element according to said state parameter; Be connected between said power supply unit and the said microprocessor to control said power supply unit when the said switch element short circuit of said microprocessor judges and stop short-circuit protection circuit for said switch element power supply.
Further, said short-circuit detecting circuit comprises input and first voltage detecting circuit between the said microprocessor that is connected in said switch element, the output that is connected in said switch element and second voltage detecting circuit between the said microprocessor.
Further, said short-circuit detecting circuit comprises: the current detection circuit that is connected in said power supply unit, microprocessor and chargeable battery.
Further, said short-circuit protection circuit comprises the exclusive circuit that is connected in said microprocessor, is connected in control circuit and pwm circuit between said exclusive circuit and the said power supply unit.
Further, said power supply unit comprises input circuit, is connected in the circuit for power conversion between said input circuit and the said switch element.
Further, said microprocessor is integrated with and is used for control switch element switch element control module that opens and closes and the state parameter that is used for before charging or the charging back is detected according to said short-circuit detecting circuit and judges the whether judge module of short circuit of said switch element.
Further, said switch element is relay or FET.
The beneficial effect of the utility model embodiment is: through adopting short-circuit detecting circuit and short-circuit protection circuit; Thereby can before and after charging, detect switch element; With timely locked control circuit when the switch element short circuit and pwm circuit; Make that charging device stops battery charge having been eliminated potential safety hazard, avoided the generation of accidents such as on fire, blast.
Description of drawings
Fig. 1 is the operation principle sketch map that having of the utility model embodiment overcharges the charging device that detects defencive function.
Fig. 2 is the high-level schematic functional block diagram that having of the utility model embodiment overcharges the charging device that detects defencive function.
Embodiment
Please refer to Fig. 1 ~ Fig. 2, the having of the utility model embodiment overcharge detect defencive function charging device 100 before charging with the sense switch element short circuit of whether losing efficacy automatically of charging back, and can when switch element lost efficacy short circuit, stop charging automatically.Said have overcharge the charging device 100 that detects defencive function and comprise power supply unit 10, switch element 20 and microprocessor 40, wherein, said switch element 20 is connected in outside chargeable battery 30.
Said power supply unit 10 comprises input circuit 11 and circuit for power conversion 13.
Input circuit 11 is used for connecting and with the said charging device 100 of input after the external power source preliminary treatment.
Said circuit for power conversion 13 is connected between said input circuit 11 and the said switch element 20, is used for the electrical signal conversion of said input circuit 11 inputs is generated rectified voltage signal.
Said charging device 100 also comprises short-circuit detecting circuit 50 and short-circuit protection circuit 60.
Short-circuit detecting circuit 50 is connected between said microprocessor 40 and the said switch element 20, is used to detect the state parameter of said switch element 20, and said state parameter is voltage, electric current etc.Said short-circuit detecting circuit 50 comprises first voltage detecting circuit 51, second voltage detecting circuit 53 and current detection circuit 55.
First voltage detecting circuit 51 is connected between the input and said microprocessor 40 of said switch element 20, is used to detect the voltage of the input of said switch element 20.
Second voltage detecting circuit 53 is connected between the output and said microprocessor 40 of said switch element 20, is used to detect the voltage of the output of said switch element 20.Wherein, said input is the end that charging current gets into said switch element 20, and said output is the end that charging current flows out said switch element 20.
Current detection circuit 55 is connected in said power supply unit 10, microprocessor 40 and chargeable battery 30, is used to detect the electric current between said circuit for power conversion 13 and the said chargeable battery 30.
Said microprocessor 40 also is integrated with judge module 43, and the state parameter that said judge module 43 is used for before charging or the charging back is detected according to said short-circuit detecting circuit 50 is judged whether short circuit of said switch element 20.For example, before to chargeable battery 30 charging, judge module 43 is the voltage that detected of first voltage detecting circuits 51 and second voltage detecting circuit 53 relatively, if two magnitudes of voltage equate, will judge the short circuit of having lost efficacy of said switch element 20; After to chargeable battery 30 chargings; The voltage that judge module 43 meeting comparison first voltage detecting circuits 51 and second voltage detecting circuit 53 are detected; And obtain the electric current that current detection circuit 55 is detected; If two magnitudes of voltage equate and said electric current greater than 0, will judge the short circuit of having lost efficacy of said switch element 20.
Short-circuit protection circuit 60 is connected between said power supply unit 10 and the said microprocessor 40, is used for when said microprocessor 40 is judged said switch element 20 short circuits, controlling that said power supply unit 10 stops is said switch element 20 power supplies.Said short-circuit protection circuit 60 comprises exclusive circuit 61, control circuit and pwm circuit 63
Exclusive circuit 61 is connected in said microprocessor 40, is used for producing block signal according to the control of microprocessor 40.
Control circuit and pwm circuit 63 are connected between said exclusive circuit 61 and the said power supply unit 10.
The course of work that overcharges the charging device 100 that detects defencive function that has of the utility model embodiment is: before 30 chargings of 100 pairs of chargeable batteries of said charging device; Before also being switch element control module 41 control switch elements 20 closures; First voltage detecting circuit 51, second voltage detecting circuit 53 be the input of sense switch elements 20 and the voltage of output respectively, and comparison module obtains the magnitude of voltage that is detected and compares, if two magnitudes of voltage equate; Then judge the short circuit of having lost efficacy of said switch element 20; Signal to exclusive circuit 61 then, exclusive circuit 61 work, locked control circuit and pwm circuit 63; Circuit for power conversion 13 quits work, and charging device 100 does not charge.
In charging process, because switch element 20 is conductings, therefore not whether short circuit of sense switch element 20.
After 100 pairs of chargeable batteries of said charging device 30 charging finished, switch element control module 41 control switch elements 20 broke off, and first voltage detecting circuit 51, second voltage detecting circuit 53 be the input of sense switch elements 20 and the voltage of output respectively; Comparison module obtains the magnitude of voltage that is detected and compares, if two magnitudes of voltage equate that and said current detection circuit 55 detects and also has charging current; Then judge the short circuit of having lost efficacy of said switch element 20; Signal to exclusive circuit 61 then, exclusive circuit 61 work, locked control circuit and pwm circuit 63; Circuit for power conversion 13 quits work, and charging device 100 does not charge.
The above is the embodiment of the utility model; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the utility model principle; Can also make some improvement and retouching, these improvement and retouching also are regarded as the protection range of the utility model.
Claims (7)
1. one kind has the charging device that overcharges the detection defencive function, is provided with power supply unit, it is characterized in that said charging device also comprises:
Be connected in the switch element of the said power supply unit and the chargeable battery of outside;
Be connected in short-circuit detecting circuit said switch element, detect the state parameter of said switch element in order to the preceding and/or charging back of charging;
Be connected in said short-circuit detecting circuit to judge the whether microprocessor of short circuit of said switch element according to said state parameter;
Be connected between said power supply unit and the said microprocessor to control said power supply unit when the said switch element short circuit of said microprocessor judges and stop short-circuit protection circuit for said switch element power supply.
2. as claimed in claim 1 have overcharge the charging device that detects defencive function; It is characterized in that said short-circuit detecting circuit comprises input and first voltage detecting circuit between the said microprocessor that is connected in said switch element, the output that is connected in said switch element and second voltage detecting circuit between the said microprocessor.
3. as claimed in claim 1 have overcharge the charging device that detects defencive function, it is characterized in that said short-circuit detecting circuit comprises: the current detection circuit that is connected in said power supply unit, microprocessor and chargeable battery.
4. as claimed in claim 1 have overcharge the charging device that detects defencive function; It is characterized in that said short-circuit protection circuit comprises the exclusive circuit that is connected in said microprocessor, is connected in control circuit and pwm circuit between said exclusive circuit and the said power supply unit.
5. as claimed in claim 1 have overcharge the charging device that detects defencive function, it is characterized in that said power supply unit comprises input circuit, is connected in the circuit for power conversion between said input circuit and the said switch element.
6. as claimed in claim 1 have overcharge the charging device that detects defencive function; It is characterized in that said microprocessor is integrated with and is used for switch element control module that the control switch element opens and closes and judges the whether judge module of short circuit of said switch element with being used for according to the state parameter that said short-circuit detecting circuit detects.
As in the claim 1 ~ 6 each described have overcharge the charging device that detects defencive function, it is characterized in that said switch element is relay or FET.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203247027U CN202268715U (en) | 2011-08-31 | 2011-08-31 | Charging device possessing overcharge detection protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203247027U CN202268715U (en) | 2011-08-31 | 2011-08-31 | Charging device possessing overcharge detection protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202268715U true CN202268715U (en) | 2012-06-06 |
Family
ID=46159499
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203247027U Expired - Lifetime CN202268715U (en) | 2011-08-31 | 2011-08-31 | Charging device possessing overcharge detection protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202268715U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425141A (en) * | 2014-09-11 | 2016-03-23 | 光阳工业股份有限公司 | Fault detecting apparatus and method for electric vehicle switch |
| CN111766494A (en) * | 2020-06-18 | 2020-10-13 | 清华大学 | Semiconductor device testing device with protection function and method |
| CN112622625A (en) * | 2020-12-28 | 2021-04-09 | 华人运通(江苏)技术有限公司 | Safety management system and method for high-voltage distribution box |
-
2011
- 2011-08-31 CN CN2011203247027U patent/CN202268715U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105425141A (en) * | 2014-09-11 | 2016-03-23 | 光阳工业股份有限公司 | Fault detecting apparatus and method for electric vehicle switch |
| CN111766494A (en) * | 2020-06-18 | 2020-10-13 | 清华大学 | Semiconductor device testing device with protection function and method |
| CN111766494B (en) * | 2020-06-18 | 2022-06-28 | 清华大学 | Semiconductor device testing device with protection function and method |
| CN112622625A (en) * | 2020-12-28 | 2021-04-09 | 华人运通(江苏)技术有限公司 | Safety management system and method for high-voltage distribution box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160926 Address after: The United Kingdom of Great Britain and Northern Ireland Northern Ireland 8 District Cardiff CF15 Reed Joyce Ge Road No. 29 Patentee after: Martin Morgan Venad Address before: 518101, Shenzhen, Guangdong province Baoan 34 District golden tower building 5 floor Patentee before: Raton Technology Development Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20120606 |
|
| CX01 | Expiry of patent term |