CN1752763A - Detecting method of charger connector safety - Google Patents
Detecting method of charger connector safety Download PDFInfo
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- CN1752763A CN1752763A CN 200410080048 CN200410080048A CN1752763A CN 1752763 A CN1752763 A CN 1752763A CN 200410080048 CN200410080048 CN 200410080048 CN 200410080048 A CN200410080048 A CN 200410080048A CN 1752763 A CN1752763 A CN 1752763A
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- charger
- connector
- secondary cell
- detecting method
- voltage
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Abstract
The present invention relates to a safety detection method of charger adapter, and is used for determining that the adapter used for making mutual connection between charger and secondary cell is reacted to change standard or not. Said invention provides the concrete steps of said detection method by using charger, charger adapter and secondary cell and adopting comparison method of instantaneous impedance of adapter and internal reference impedance of the charger. Said invention can prolong the service life of secondary cell.
Description
Technical field
The present invention relates to a kind of safety detecting method of charger connector, mainly is that the adapter that secondary cell charge is used is carried out impedance detection, judges by this impedance whether this adapter should upgrade or reconnect.
Background technology
Human after marching toward 21 century, on the one hand because the shortage day by day of petroleum resources on the other hand in order to reduce the environmental pollution that gasoline car causes, is just saved the energy, oligosaprobic pure electric vehicle (EV)/combined type electric motor car (HEV) at active development.
The technical bottleneck of pure electric vehicle (EV) or combined type electric motor car (HEV) is battery, motor and control system at present, and main key is battery.Though electric motor car can improve problem of environmental pollution, yet although generally all there is the not good problem of continuation in the secondary cell power consumption difference of each producer, regular meeting has the power consumption because of secondary cell totally to bring inconvenience.So, be used at present that the secondary cell one day of electric motor car is minimum to need charging once, see also shown in Figure 1ly, the secondary cell 20 of electric motor car can be provided with an incoming line 21 usually, and the one end is provided with an input connector 22, and this input connector 22 is provided with and overlaps access slot 221.And charger 10 is provided with an output line 15, and the one end is provided with an output connector 16 that matches with aforementioned input connector 22, and output connector 16 is provided with the conducting terminal 161 that matches with this cover access slot 221.
Therefore, the every need charged once, the socket of this input connector 22 and output connector 16 with pull away action and just need carry out once, charging times with general secondary cell 20, calculating once a day, in 1 year this input connector 22 and 16 sockets of output connector with pull away action just will be above 700 times, therefore, cause the conduction between conducting terminal 161 and the cover access slot 221 bad and loosening easily, even conducting terminal 161 can be damaged or break.The charging current that adds this general secondary cell 20 is not little, and conducting terminal 161 is originally just higher with the joint impedance of cover access slot 221, like this, can be after charging is finished because the thermal effect of electric current (heat that produces in the lead unit interval) P=I2R (P: power, I: electric current, R: conductor resistance) cause the temperature of the input connector that constitutes by metal material 22 and output connector 16 can be higher.
So, general user will be because of the temperature height of input connector 22 with output connector 16, and finish need pull away input connector 22 with output connector 16 time in charging, can be enclosed with the incoming line 21 and output line 15 of plastic material by pulling, make output connector 16 pull away input connector 22, yet will aggravate the damage of conducting terminal 161 and cover access slot 221 like this or break, make impedance herein become big.In the charging or the charging thermal effect of finishing after-current make herein power increase and produce high temperature, thereby cause easily right thing to be lighted on every side and cause fire.Also may become big because impedance herein becomes the whole charging voltage of ambassador, make the electrolytic solution in the secondary cell 20 easily decompose the deterioration that causes battery behavior and permanance like this, the ability that recharges of badly damaged secondary cell 20 and electric power storage ability, thereby reduce the chargeable number of times of secondary cell 20, shorten its serviceable life.
Summary of the invention
The technical problem to be solved in the present invention is to overcome the defective that above-mentioned prior art exists, and a kind of safety detecting method of charger connector is provided.
The safety detecting method of charger connector of the present invention may further comprise the steps: electrically connect charger and secondary cell: all dispose the connector that is complementary on charger and secondary cell, connector is electrically connected mutually, make secondary cell finish the installation work that connects charger; Obtain instantaneous voltage and electric current: with charger secondary cell is measured,, exported a current signal by charger again, make the feedback voltage of secondary cell carried by drawing of current signal and produce an instantaneous voltage to obtain feedback voltage; Obtain the transient impedance of connector: the transient impedance that draws connector with the voltage difference of instantaneous voltage and feedback voltage divided by the current value of current signal; Relatively and judge the replacing standard of connector: at the built-in reference impedance of charger, compare with reference impedance with transient impedance, if transient impedance is more than or equal to reference impedance, judge that then connector has reached the connection status mistake of replacing standard or connector, and charger will stop to charge or the display unit of the information of sending to the charger, change connector or again connector will be electrically connected to inform the user.
In addition, above-mentioned detection method is applied to a charger, and described charger comprises: a charge circuit, comprise a control module and a voltage transformation unit, and external power source is carried out after the power conversions secondary cell charge; One detecting loop, has a microcontroller that is connected with control module, microcontroller is measured to obtain voltage secondary cell, and microcontroller is exported a current signal, export a load circuit that is connected with secondary cell to through a signal converter, make the microcontroller secondary obtain the different voltages of this secondary cell multiple spot, union exports a display unit to.
Can measure the impedance of the joint of conducting terminal and cover access slot on the one hand according to the safety detecting method of charger connector of the present invention, and with itself and a default impedance ratio, thereby can detect the security of charging, allow the user learn and when should upgrade the input connector and export connector or electrically connect connector again with adapter.
In addition, also can pass through a display, learn the indicator signal of upgrading input connector and output connector synchronously according to the safety detecting method of charger connector of the present invention.
Description of drawings
Fig. 1 synoptic diagram that to be charger electrically be connected with secondary cell.
Fig. 2 is a circuit block diagram of the present invention.
Fig. 3 is the schematic flow sheet of detection method of the present invention.
Embodiment
About preferred embodiments of the present invention and technology contents, existing accompanying drawings is as follows:
Seeing also Fig. 1,2,3, is respectively the process flow diagram that charger 10 and secondary cell 20 electrically connect synoptic diagram, circuit block diagram of the present invention and detection method.The present invention possesses the secondary cell 20 of electric power storage ability and the connector 16,22 of charger 10 in order to measure plumbic acid, nickel ion or lithium ion etc., wherein, this secondary cell 20 is provided with an incoming line 21, and the one end is provided with an input connector 22, and this input connector 22 is provided with and overlaps access slot 221; And charger 10 is provided with an output line 15, and the one end is provided with an output connector 16 that matches with aforementioned input connector 22, and output connector 16 is provided with the conducting terminal 161 that matches with this cover access slot 221, and the charger 10 according to measuring method of the present invention mainly has a charge circuit, this charge circuit comprises control module 11 and voltage transformation unit 12, (exchanging changes direct current or DC-DC) is to secondary cell 20 chargings after by control module 11 and voltage transformation unit 12 external power source being carried out power conversions, this charge circuit is connected with a detecting loop 14, this detecting loop 14 has a microcontroller 141 that is connected with control module 11,141 pairs of secondary cells 20 of this microcontroller are measured to obtain voltage, and these microcontroller 141 output one current signals (I), through a signal converter 142 (digital signal is converted to simulating signal), export a load circuit 143 that is connected with secondary cell 20 to, make microcontroller 141 secondaries obtain the different voltages of these secondary cell 20 multiple spots, union exports a display unit 13 to, and detection method of the present invention comprises the following steps:
A, electric connection charger 10 and secondary cell 20: the input connector 22 and the output connector 16 of configuration on this charger 10 and the secondary cell 20 are passed through cover access slot 221 and conducting terminal 161 grafting, make secondary cell 20 finish the installation work that connects charger 10.
B, obtain instantaneous voltage (Vb) and electric current: after secondary cell 20 and charger 10 are finished installation work, the control module 11 of charger 10 will send a charging look-at-me stops to 20 chargings of this secondary cell charge circuit, at this moment, secondary cell 20 with feedback self voltage to charger 10, make 141 pairs of secondary cell 20 measurements of microcontroller in detecting loop 14 obtain a feedback voltage (Va), export current signals (I) to load circuit 143 by microcontroller 141 again, at this moment, the feedback voltage (Va) of secondary cell 20 is carried by drawing of this current signal (I) will produce different voltage levels, allow microcontroller 141 secondary detection, obtain an instantaneous voltage (Vb) by this.
C, obtain connector 16,22 transient impedance (Ra): with the voltage difference (Va-Vb) of above-mentioned instantaneous voltage (Vb) and feedback voltage (Va) current value divided by current signal (I), can draw an instantaneous impedance (Ra) like this, this transient impedance (Ra) promptly represents charger 10 under uncharged state, by the transient impedance (Ra) that charger 10 feedback voltages (Va) are flowed through and imported connector 22 and export connector 16, aforementioned transient impedance (Ra) also can calculate more accurate instantaneous impedance (Ra) again by repeatedly measuring the obtained voltage difference (Va-Vb) of instantaneous voltage (Vb).
D, relatively and judge the replacing standard of connector: at charger 10 built-in reference impedances (Rx), compare with reference impedance (Rx) with this transient impedance (Ra), if transient impedance (Ra) is more than or equal to reference impedance (Rx), then judge this connector 16,22 have damaged the replacing standard that reaches, or connector 16,22 connection status generation gets loose or connects incomplete erroneous condition, at this moment, charger 10 will stop to charge or the display unit 13 of the information of sending to the charger 10, to inform that the user changes connector 16,22 or again with connector 16,22 electrically connect, and display unit 13 can be light emitting diode or hummer.
By above step; the user can learn the state of connector 16,22 immediately and change in good time or reconnect; can avoid importing connector 22 by this or export the fire that connector 16 causes because of high temperature; maybe can avoid influencing the charging ability of secondary cell 20; be noted that; the present invention not only just does to detect action when secondary cell 20 initially electrically connects with charger 10; in charging process; also but certain interval of time repeats above-mentioned steps, so that charger 10 and secondary cell 20 all have excellent protection at arbitrary charging time point.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (6)
1. the safety detecting method of a charger connector, be used to measure between charger (10) and the secondary cell (20) whether reached replacing standard or connection safety, it is characterized in that the safety detecting method of described charger connector may further comprise the steps in order to the connector (16,22) that electrically connects:
A, electrically connect described charger (10) and secondary cell (20): on described charger (10) and secondary cell (20), all dispose the connector (16,22) that is complementary, described connector (16,22) is electrically connected mutually, make described secondary cell (20) finish the installation work that connects described charger (10);
B, obtain instantaneous voltage and electric current: described secondary cell (20) is measured with described charger (10), to obtain feedback voltage, again by described charger (10) output one current signal, make the feedback voltage of described secondary cell (20) carried by drawing of described current signal and produce an instantaneous voltage;
C, obtain the transient impedance of described connector (16,22): the transient impedance that draws described connector (16,22) with the voltage difference of described instantaneous voltage and feedback voltage divided by the current value of current signal;
D, relatively and judge described connector (16,22) replacing standard: at the built-in reference impedance of described charger (10), compare with described reference impedance with described transient impedance, if described transient impedance is more than or equal to described reference impedance, then judge described connector (16,22) replacing standard or described connector (16 have been reached, 22) connection status mistake, and described charger (10) will stop charging or the display unit (13) of the information of sending to the described charger (10), change described connector (16 to inform the user, 22) or again with described connector (16,22) electrically connect.
2. the safety detecting method of charger connector according to claim 1 is characterized in that, described detection method is applied to a charger (10), and described charger (10) comprising:
One charge circuit comprises a control module (11) and a voltage transformation unit (12), after the power conversions described secondary cell (20) is charged so that external power source is carried out; One detecting loop (14), has a microcontroller (141) that is connected with described control module (11), described microcontroller (141) is measured to obtain voltage described secondary cell (20), and described microcontroller (141) output one current signal, export a load circuit (143) that is connected with described secondary cell (20) to through a signal converter (142), make described microcontroller (141) secondary obtain the different voltages of described secondary cell (20) multiple spot, union exports a display unit (13) to.
3. the safety detecting method of charger connector according to claim 2, it is characterized in that, described control module (11) output one charging look-at-me, described charge circuit is stopped described secondary cell (20) charging, obtain the real feedback dump energy of described secondary cell (20) by this.
4. the safety detecting method of charger connector according to claim 2 is characterized in that, described display unit (13) is a light emitting diode.
5. the safety detecting method of charger connector according to claim 2 is characterized in that, described display unit (13) is a hummer.
6. the safety detecting method of charger connector according to claim 2 is characterized in that, and is relatively described and judge that described connector (16,22) changes the step of standard and can carry out at described control module (11) or microcontroller (141).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410080048 CN1752763A (en) | 2004-09-22 | 2004-09-22 | Detecting method of charger connector safety |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410080048 CN1752763A (en) | 2004-09-22 | 2004-09-22 | Detecting method of charger connector safety |
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| CN1752763A true CN1752763A (en) | 2006-03-29 |
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| CN 200410080048 Pending CN1752763A (en) | 2004-09-22 | 2004-09-22 | Detecting method of charger connector safety |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102043095A (en) * | 2010-10-22 | 2011-05-04 | 上海鼎研智能科技有限公司 | Method for monitoring impedance of connectors in power battery pack |
| CN103983894A (en) * | 2013-02-13 | 2014-08-13 | 快捷韩国半导体有限公司 | Jack detector and jack detecting method |
| CN105634072A (en) * | 2016-02-26 | 2016-06-01 | 郑州宇通客车股份有限公司 | Reliability judgment method and system for high-voltage link of electric vehicle charging system |
-
2004
- 2004-09-22 CN CN 200410080048 patent/CN1752763A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102043095A (en) * | 2010-10-22 | 2011-05-04 | 上海鼎研智能科技有限公司 | Method for monitoring impedance of connectors in power battery pack |
| CN103983894A (en) * | 2013-02-13 | 2014-08-13 | 快捷韩国半导体有限公司 | Jack detector and jack detecting method |
| CN103983894B (en) * | 2013-02-13 | 2018-07-17 | 快捷韩国半导体有限公司 | Plug detector and plug detection method |
| CN105634072A (en) * | 2016-02-26 | 2016-06-01 | 郑州宇通客车股份有限公司 | Reliability judgment method and system for high-voltage link of electric vehicle charging system |
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