CN103532188B - Electric vehicle storage battery charging process monitoring device - Google Patents
Electric vehicle storage battery charging process monitoring device Download PDFInfo
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- CN103532188B CN103532188B CN201310462010.2A CN201310462010A CN103532188B CN 103532188 B CN103532188 B CN 103532188B CN 201310462010 A CN201310462010 A CN 201310462010A CN 103532188 B CN103532188 B CN 103532188B
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Abstract
The invention discloses an electric vehicle storage battery charging process monitoring device, which at least comprises a voltmeter, an ammeter, a containing case, connectors and a transmission line; the connector matched with the connector of a charger is arranged at the input end, and the connector matched with the connector of a storage battery is arranged at the output end; the input end is connected with the output end through the transmission line, so that an electric loop is formed; the voltmeter is connected in parallel with the electric loop, and the ammeter is connected in series with the electric loop; the voltmeter, the ammeter and the transmission line are closed in the containing case, and the reading displays of the voltmeter and the ammeter are arranged on the containing case. The electric vehicle storage battery charging process monitoring device belongs to a low-power direct-current intermediate charging process monitoring device, can be plugged between the charger and the storage battery pack through the appropriate connectors, and can use the configured ammeter and voltmeter to interpret charging parameters, monitoring the whole charging process.
Description
Technical field
The present invention relates to the switching device between a kind of electric car charger and storage battery, be specifically related to a kind of for the transfer plug-in type charging process monitoring device between electric car charger and batteries.
Background technology
Due to popularizing of electric motor car, the specification kind of electric car charger and storage battery gets more and more, standard imperfection, the specification that the interface of charger and storage battery is ununified, a large amount of generations that misconnection and reversal connection cause the accident, charger and accumulator failure and inefficacy do not differentiate means intuitively.Therefore, the maintenance manufacturer of electric motor car and repair service point need a kind of insertion apparatus monitoring charging process and parameter urgently, in order to diagnosis and distinguish fault and reason and attribute.
Summary of the invention
Goal of the invention: the object of the invention is to the deficiency for existing electric motor car after-sale service technology, provides a kind of applicable electric motor car low power charger characteristic requirements and safe and reliable electromobile battery charging process monitoring device.
Technical scheme: electromobile battery charging process monitoring device of the present invention, at least comprises a voltmeter, ammeter, container, connector and a transmission line; Wherein, the connector mated with charger contacts is arranged on input, and the connector mated with battery-terminal is arranged on output; Electric loop is connected to form by transmission line between input and output; Described voltmeter is connected in parallel in electric loop, and described ammeter is connected in electric loop; Described voltmeter, ammeter and transmission line are enclosed in described container, and the read-out display of voltmeter and ammeter is arranged on container.During use, be inserted between charger and storage battery by monitoring device, transfer realizes the electric transmission between electric car charger and batteries; Meanwhile, indicated voltage, the current parameters in charging process by voltmeter, ammeter Continuous Tracking, the combined charge time can judge the fault of batteries or charger.Concrete monitoring determination methods is: 1, passed through the maximum charging current filling the nominal of current check charger; 2, when charging current is reduced to close to transfer point, maximum output voltage nominal value is read; 3, read when red light turns green light and check the current value of the state transition point of charger nominal and the float charge voltage nominal value after changing; 4, the electricity " time amp-" that combined charge Time Calculation is filled with counts; 5, the storage battery charging interval after emptying is too short, represents that battery has dehydrating phenomena; 6, during charging, voltage rise slowly represents that storage battery has salinization (plate vulcanizing) phenomenon; 7, cell voltage does not rise for a long time and represents that salinization is serious or with certain the primary cell lattice short circuit in battery pack; 8, after long-time charging, when the red light of charger does not turn green light, combine the actual charging interval again according to the numerical value change situation of the voltage and current in process and analyzed judgement.
Further, in order to the generation preventing the polarity misconnection between monitoring device and charger, storage battery from causing security incident, simultaneously, the safe voltage specification of charging device or maximum safe dc current standard is met when port open, also be provided with the circuit module that some have anti-reverse function in apparatus of the present invention, specifically comprise input Check up polarity module, battery polar detection module, polarity identification logic module, current-limiting type bilateral analog switch, main electronic switch, RC time delay module and malfunction indicator lamp; Described input Check up polarity module and described battery polar detection module are connected across input and the output of electric loop respectively, and the signal common transport of detection is to described polarity identification logic module; Generation output signal is transferred to described current-limiting type bilateral analog switch when polarity meets by described polarity identification logic module; Described current-limiting type bilateral analog switch is in parallel with major loop by the gate nodes of main electronic switch, one end of current-limiting type bilateral analog switch is connected to the gate nodes of described main electronic switch and one end of RC time delay module, the other end is connected to the anode of described main electronic switch, and is connected to negative pole of output end through ammeter; The other end of described RC time delay module is connected to negative electrode and the input cathode of described main electronic switch; The positive pole of voltage is connected in input anode, and negative pole list catenation is on the symmetric points of described current-limiting type bilateral analog switch inside; The positive pole of malfunction indicator lamp is connected in the base stage of described polarity identification logic module simultaneously, and negative pole is connected with input anode.After the access of foregoing circuit module, the electric current (being defined as backward current) exported by storage battery for path with RC time delay module, triggers or starts charger operation; Then, the electric current (being defined as forward current) exported by charger is flowing through RC time delay module and after suitable time delay, drive main electronic switch conducting, system starts to battery charging.Reversal connection malfunction indicator lamp can use LED, and when there is reversal connection, the forward voltage drop of the LED be lit carries out clamper to the reverse voltage putting on polarity identification logic module base stage simultaneously.
By arranging the above-mentioned circuit module with anti-reverse function, following function can be played: 1, play the side reversal connection of port or two sides all by the safeguard protection of reversal connection (comprise charger and connected AC power and output voltage is effective, charger and batteries insert interface with any order); 2, the short-circuit protection of one of port; 3, when charger output does not meet safe dc voltage specification, the output voltage after device conversion meets safety standard; When only accessing batteries, the short circuit current of input meets the regulation (being less than 50mA) about safe dc electric current; 4, after adding defencive function, storage battery still has certain reverse power supply capacity, with applicable triggering or start different types of charger, such as, needs to use the protection relay being removed to drive charger built-in by the storage battery charged; 5, after adding defencive function, voltmeter realizes a table double-purpose, indicates the voltage of storage battery when only correctly accessing batteries, indicates the output voltage of charger when only correctly accessing charger, when accessing simultaneously, and the voltage that voltmeter instruction is slightly high; When the polarity access of any one end exists mistake, malfunction indicator lamp is bright; 6, when charging process enters ending phase, when this device does not have minimum breaker points, charging current is zero, this device zero pressure difference; 8, the control circuit of device itself adopts Micro Energy Lose design.
Preferably, described input Check up polarity module is made up of a divider resistance and a Diode series, diode conducting when input reverse-connection.
Preferably, described battery polar detection module is a divider resistance, and when reversal connection appears in certain port, the electric current that bucking voltage produces in measure loop is led to the positive terminal of reversal connection malfunction indicator lamp.
Preferably, described polarity identification logic module is PNP transistor, and its base stage is connected with the dividing point of input Check up polarity module and battery polar detection module simultaneously; Output stage is connected with current-limiting type bilateral analog switch.When monitoring device is connected with charger or storage battery, this pipe cut-off when having more than to occur reversal connection
Preferably, described main electronic switch is one-way SCR, conducting and the blocking-up of major loop is controlled according to logical condition, do not get rid of the mirror image circuit using negative polarity one-way SCR to form, or the mirroring scheme using other electronic switching device to form or use other reversed polarity electronic switching device to form.The scheme that main electronic switch can also adopt bilateral power devices to form and mirroring scheme thereof; Or the holohedral symmetry transfer plug-in type switching device adopting bilateral power devices to form, such as, input and output can exchange the switching device of use.
Current-limiting type bilateral analog switch is in parallel with major loop by main electronic switch silicon controlled gate nodes " G ", this branch current can the energy of reverse transmission storage battery, the part that the forward current of current-limiting type bilateral analog switch enters controllable silicon gate pole in node G shunting triggers controlled silicon conducting, because current-limiting type bilateral analog switch and silicon controlled anode principal current are parallel relationship, triggering is disposable, after controlled silicon conducting, this electric current is determined by silicon controlled conduction voltage drop, maintain one very numerically little, trigger referred to as pulse.Preferably, described current-limiting type bilateral analog switch comprises forward VMOS field effect transistor, oppositely VMOS field effect transistor, branch current sample resistance and bidirectional current limiting control unit; The output stage of described polarity identification logic module is connected to interconnected gate pole and the bidirectional current limiting control unit of described forward VMOS field effect transistor and reverse VMOS field effect transistor; The described drain electrode of forward VMOS field effect transistor is connected with one end of the gate nodes of one-way SCR and RC time delay module; The described reverse drain electrode of VMOS field effect transistor is connected with the anode of one-way SCR, and is connected to negative pole of output end through ammeter; Described branch current sample resistance is connected between two source electrodes of forward VMOS field effect transistor and reverse VMOS field effect transistor; Described bidirectional current limiting control unit is in parallel with described branch current sample resistance, bidirectional current limiting control unit is according to the voltage drop on branch current sample resistance, the output signal produced removes the interconnected gate pole controlling forward VMOS field effect transistor and reverse VMOS field effect transistor, removes to limit by changing gate voltage the electric current flowing through current-limiting type bilateral analog switch.Be connected to silicon controlled anode due to this circuit and control, between pole, to hold a concurrent post silicon controlled pulse from Trigger Function, meet the requirement of Micro Energy Lose circuits for triggering.Another effect of current-limiting type bilateral analog switch is, when charging is close to terminating, when charging current is less than silicon controlled maintenance electric current, controllable silicon will turn off voluntarily, and now, this circuit can maintain small area analysis floating charge state, until pressure reduction equals zero.
The negative pole of voltmeter is connected between two source electrodes of forward VMOS field effect transistor and reverse VMOS field effect transistor, positive pole is connected in input anode, like this can indicative input and exporting in 2 ports, the port voltage that any one connection is correct, realize a table double-purpose, when being in normal charging condition, when 2 ports have correct voltage to exist simultaneously, voltmeter only indicates a wherein slightly high value.In the present invention, voltmeter does not differentiate the function that port voltage polarity makes a mistake, and when more than one mistake appears in the polarity of voltage of port, malfunction indicator lamp is lit.
Main electronic switch silicon-controlled device has certain restriction to forward blocking voltage climbing, after input has switched on power and is effective, and output plug misuse reversal connection plug up-to-date style, when plug is inserted storage battery in a flash by user, a vertical raised voltage can be produced, cause controllable silicon false triggering, in order to promote silicon-controlled device tolerance to forward blocking voltage in side circuit, the RC time delay module of a parallel-connection structure is accessed between node G and controllable silicon negative electrode used, this RC time delay module can improve silicon controlled interference free performance significantly, tolerate very high forward blocking voltage climbing.Described RC time delay module is made up of resistance R and electric capacity C parallel connection, and wherein resistance R is the Part way of branch current, when branch current charges to electric capacity C, and the time delay needed for the triggering of main electronic switch is produced.
Input charger switched on power and output voltage effectively (such as, when have employed the output safety protective circuit of non-controllable silicon type in the design of charger, its output port has triggering retention performance, after the load of output port is thrown off, still be locked into and export effectively), and under the condition of output plug misuse reversal connection plug, current-limiting type bilateral analog switch can produce a delay (the gate pole parasitic capacitance primarily of the VMOS field effect transistor of 2 anti-series determines) after the cut-off signals receiving polarity identification logical circuit, thus cause controllable silicon can by false triggering, another usefulness after above-mentioned RC time delay module intervention reserves the regular hour to the closedown of " current-limiting type bilateral analog switch ", that is silicon controlled trigger instants is provided to the postponement be associated, need the time postponed can be determined by the maximum current of " current-limiting type bilateral analog switch " and RC time delay module, this time of delay calculates with microsecond, be not aware of in the middle of reality uses.
In order to prevent misconnection, another technical scheme of the application is: also comprise three diodes, a voltage-stabiliser tube, two power resistors, a relay and contacts thereof, a diode is connected between input anode and output head anode together with ammeter, normally open contact; No. two diodes and power resistor form a branch road and ammeter is connected in parallel between input anode and output head anode; No. three diode, No. two power resistors and relay parallel connections together with voltmeter are connected across between the positive pole of output and negative pole; The input of voltage-stabiliser tube is connected between No. two power resistors and relay, and output is connected on negative pole of output end;
When battery access is correct, the forward current of battery through No. three diodes, then is powered to relay by after No. two power resistors, voltage-stabiliser tube voltage stabilizing, and the normally open contact of relay will close; Meanwhile, the electric energy of storage battery is triggered by a power resistor and No. two diode branch and is access in charger; The effect of No. two diodes is here the one-way in order to ensure trigger current, avoids relay to produce misoperation.
After charger starts, the contact of a diode and relay provides charging current for storage battery.The effect of a diode is the one-way in order to ensure charging current, when inputting polarity by reversal connection, can guarantee that battery can not, to charger short circuit dischange, be one of principal character of another program of the present invention with the contact tandem compound of unilateral diode and relay.
The present invention compared with prior art, its beneficial effect is: 1, the invention belongs to rotatable charging process monitoring device in small power DC, the centre of charger and batteries can be inserted in by suitable connector, the ammeter by configuring and voltmeter is used to get final product interpretation charge parameter, the overall process of supervision charging.2, the circuit module with anti-reverse function is had access in apparatus of the present invention further; control circuit adopts Micro Energy Lose design; main switch adopts power-type contactless electron device; when there is any reversal connection mistake and short trouble in the connection of the input and output port of device; the effective open circuit protection of automatic realization (comprise charger and connected AC power and output voltage is effective, charger and batteries insert interface with any order).When charger input voltage is effective and output does not access storage battery, export the no-voltage for meeting safety standard; When charger has open circuit safety protection function, after access storage battery, device can reverse connection batteries go to trigger or start charger, makes the output voltage of charger effective; When charger output does not meet safe dc voltage specification, the output voltage after device conversion meets safety standard.When only accessing batteries, the short circuit current of input meets the regulation (being less than 50mA) about safe dc electric current; Storage battery has certain reverse power supply capacity, with applicable triggering or start different types of charger, such as, needs to use the protection relay being removed to drive charger built-in by the storage battery charged.3, the voltmeter of this device realizes a table double-purpose, the voltage of instruction batteries when only batteries access is correct, the output voltage of instruction charger when the access of only charger is correct and the output of charger is effective, when two ends are correctly accessed simultaneously, the voltage that voltmeter instruction is slightly high, when the polarity access of any one end is wrong, malfunction indicator lamp is bright.4, when charging process enters ending phase, when device itself does not have minimum breaker points, charging current to be zero, device zero pressure difference.
Accompanying drawing explanation
Fig. 1 is that electromobile battery charging process monitoring device uses connection diagram;
Fig. 2 is electromobile battery charging process monitoring device theory diagram in embodiment 1;
Fig. 3 is electromobile battery charging process monitoring device structural representation in embodiment 1;
Fig. 4 is electromobile battery charging process monitoring device structural representation in embodiment 2.
Embodiment
Below technical solution of the present invention is described in detail, but protection scope of the present invention is not limited to described embodiment.
embodiment 1:a kind of electromobile battery charging process monitoring device, as shown in Figure 3, input Check up polarity module 1, battery polar detection module 2, polarity identification logic module 3, malfunction indicator lamp 4, forward VMOS field effect transistor 5, reverse VMOS field effect transistor 6, branch current sample resistance 7, bidirectional current limiting control unit 8, main electronic switch 9, RC time delay module 10, voltmeter 11, ammeter 12 is comprised.By forward VMOS field effect transistor 5, oppositely VMOS field effect transistor 6, branch current sample resistance 7, bidirectional current limiting control unit 8 form current-limiting type bilateral analog switch.Main electronic switch is formed by controllable silicon.
Input Check up polarity module 1 comprises a diode of divider resistance and series connection thereof, is connected across input; During diode current flow, malfunction indicator lamp lights, and represents that input polarity is connect instead, under correct polarity connection, does not have electric current by diode, presentation logic " 1 ".
Battery polar detection module 2 is made up of divider resistance, is connected across battery-end; Presentation logic " 1 " when storage battery access polarity is correct.
Polarity identification logic module 3 is PNP transistor.
Input Check up polarity module 1 is all connected with the base stage of PNP transistor in polarity identification logic module 3 with the divider resistance in battery polar detection module 2, and the output of polarity identification logic module 3 is connected to interconnected gate pole and the bidirectional current limiting control unit 8 of forward VMOS field effect transistor 5, oppositely VMOS field effect transistor 6; 2 gate poles of forward VMOS field effect transistor 5, oppositely VMOS field effect transistor 6 are connected, the drain electrode of reverse VMOS field effect transistor 6 is connected with the anode of controllable silicon 9, the drain electrode of forward VMOS field effect transistor 5 is connected to the control pole (hereinafter referred to as node G) of controllable silicon 9 and one end of RC time delay module 10, between 2 source electrodes of forward VMOS field effect transistor 5, oppositely VMOS field effect transistor 6, access sample resistance 7 and the bidirectional current limiting control unit 8 in parallel with sample resistance 7; RC Postponement module 10 is connected between the negative electrode of node G and controllable silicon 9, in order to provide necessary time delay to the triggering of controllable silicon 9, can significantly improve the tolerance of controllable silicon 9 pairs of forward voltage build-up rates simultaneously; Voltmeter 11 one end is connected on the source electrode that current sampling resistor 7(is also reverse VMOS field effect transistor 6 or forward VMOS field effect transistor 5), one end is connected with output head anode; Ammeter 12 one end is connected with silicon controlled anode (being also the drain electrode of reverse VMOS field effect transistor 6), and one end is connected with negative pole of output end; Reversal connection malfunction indicator lamp 4 adopts the LED (redness) of high brightness, its positive pole is connected with the base stage of the PNP transistor in polarity identification logic 3, negative pole is connected with input anode (with the intercommunication of battery-end positive pole), when described LED is lighted, the reverse withstand voltage of its forward voltage drop to the base stage of the PNP transistor be applied in polarity identification logic 3 carries out " clamper " protection; .
Forward VMOS field effect transistor 5, reverse VMOS field effect transistor 6, sample resistance 7, the set of bidirectional current limiting control unit 8 is referred to as current-limiting type bilateral analog switch, it is a two-way branch road of small area analysis of this device connecting charger and batteries, when loop current is provided by storage battery, this electric current is triggering or the starting current of charger, after the output effectively of charger, branch current is silicon controlled trigger current, after controlled silicon conducting, it adds a very little electric current, import the part that trigger node G becomes loop total current, current-limiting type bilateral analog switch and main electronic switch are parallel operation mode, total current equals silicon controlled anode current and branch current algebraical sum.
Bidirectional current limiting control unit 8 is according to the voltage drop of the transmission on branch current sample resistance 7, the output signal produced removes the interconnected gate pole controlling above-mentioned two field effect transistor (forward VMOS field effect transistor 5, oppositely VMOS field effect transistor 6), removes to limit by changing gate voltage the electric current flowing through two field effect transistor.Bidirectional current limiting control unit 8 is made up of two npn type bipolar transistors, the threshold value utilizing P to tie as comparison value, when the voltage drop on branch current sample resistance 7 exceedes threshold value, transistor turns, thus reduce the control voltage on two interconnected gate poles of field effect transistor.
Cut-off current (milliampere)=threshold value (millivolt)/branch current sample resistance 7(ohm);
When electric current exceedes setting, reduce the gate voltage of aforementioned two field effect transistor, until close forward VMOS field effect transistor 5 and reverse VMOS field effect transistor 6; The negative pole of voltmeter 11 is connected to the source electrode of reverse VMOS field effect transistor 6, when storage battery accesses separately, reverse VMOS field effect transistor 6 reverse-conducting, voltmeter 11 indicates battery tension, when charger accesses separately, the reverse conducting of forward VMOS field effect transistor, voltmeter 11 indicates charger voltage (when charger exports effective).
RC Postponement module 10 is connected to silicon controlled and controls between pole (node G) and negative electrode, provides necessary time delay, can significantly improve the tolerance of controllable silicon to forward voltage build-up rate simultaneously in order to trigger silicon controlled.
The current drain of related cell:
Input Check up polarity module 1; When polarity connection is correct, current drain is 0, during reversal connection voltage 100V, lights indicator light about 5 milliamperes;
Battery polar detection module 2: when cell voltage is 70V, during reversal connection voltage 70V, lights indicator light about 1 milliampere by about 1 milliampere;
Polarity identification logic module 3: when charging voltage is 70V, about 1.8 milliamperes is 0 during battery-end reversal connection;
Bidirectional current limiting control unit 8: itself does not have independently current drain, during 70V current limliting, causes the electric current of polarity identification logic 3 to increase about 0.2 milliampere;
Malfunction indicator lamp 4: when polarity connection is correct, electric current is 0;
During voltmeter 11:100V 1 milliampere;
Ammeter 12 can use the ammeter of absolute value indicator type instead.
In addition input and output are an in parallel separately capacitor (not shown).
This device specific works process:
One, normally work
The input both positive and negative polarity of charger access device, the battery plus-negative plate of storage battery access device, the input Check up polarity module of device and battery polar detection module detect input signal and are transferred to polarity identification logic module, if storage battery and charger access simultaneously correct and voltage is effective time, the condition of polarity identification logic module is set up, voltmeter instruction storage battery and the wherein slightly high magnitude of voltage of charger, transfer signals to current-limiting type bilateral analog switch simultaneously, one end of current-limiting type bilateral analog switch is connected to silicon controlled in main electronic switch and controls pole, the electric current (being defined as backward current) exported by storage battery with RC time delay module for path, trigger or start charger operation, the electric current (being defined as forward current) then exported by charger is flowing through RC time delay module and after suitable time delay, and drive controlled silicon conducting, charger starts to battery charging.At the end of charging is close, charging current is less than silicon controlled and maintains electric current, and controllable silicon will turn off voluntarily, and now, whole circuit maintains small area analysis floating charge state, until pressure reduction is zero.
Two, fault
(1) when reversal connection appears in one of charger and storage battery, the condition of polarity identification logic module is false, the voltage drop at sample resistance two ends is sent to bidirectional current limiting control unit, when electric current exceedes setting, voltage on sample resistance exceedes the threshold value that in bidirectional current limiting control unit, transistor P ties, transistor turns, thus reduce the interconnected gate voltage of two field effect transistor (forward VMOS field effect transistor, oppositely VMOS field effect transistor), until close two field effect transistor, main electronic switch turns off, and reversal connection malfunction indicator lamp is bright:
When charger input reverse-connection and voltage is effective, and battery polar correct time, forward VMOS field effect transistor is blocking state, backward diode conducting built-in in reverse VMOS field effect transistor, voltmeter instruction battery tension, now, the diode current flow in input Check up polarity, reversal connection malfunction indicator lamp (LED) is lighted (low-light level);
Work as reverse connection of accumulator, and the polarity of charger input is correct and voltage is effective time, reverse VMOS field effect transistor is blocking state, backward diode conducting built-in in forward VMOS field effect transistor, the magnitude of voltage of voltmeter instruction charger, reversal connection malfunction indicator lamp (LED) is lighted (high brightness).
(2) no matter when the reversal connection simultaneously of storage battery and charger and whether voltage is effective, voltmeter indicated value is zero.
(3) when storage battery accesses separately, reverse VMOS field effect transistor reverse-conducting, voltmeter instruction battery tension, when charger accesses separately, the reverse conducting of forward VMOS field effect transistor, voltmeter instruction charger voltage (charger exports effectively).If the charger of now access does not meet safety standard in electric motor car industry standard, the output voltage after device is changed is zero, makes it meet safety standard in electric motor car industry standard; When the charger accessed meets safety standard in electric motor car industry standard, the voltage that voltmeter records is generally zero, due to meet safety standard in electric motor car industry standard type needs access storage battery after activate output port, require that this device can the electric energy of the defeated storage battery of reverse transmission; Be less than the relevant criterion of 50mA according to direct current safe current, backward current is limited in maximum and is less than direct current safe current by this device, the type meeting safety standard in electric motor car industry standard adopting relay to connect output port so that compatible.
embodiment 2:a kind of electromobile battery charging process monitoring device, as shown in Figure 4, comprises a relay, 3 diodes, a voltage-stabiliser tube, 2 power resistors and voltmeter, ammeter composition; Its annexation can be stated by Fig. 4.
When battery access is correct, the forward current of battery through No. three diode D3, then is powered to relay by after No. two power resistor R2, voltage-stabiliser tube Z1 voltage stabilizing, and its normally open contact will close; Meanwhile, the electric energy of storage battery is triggered by a power resistor R1 and No. two diode D2 branch road and is access in charger (if needs), and the effect of No. two diode D2 is here the one-way in order to ensure trigger current, avoids relay to produce misoperation.
After charger starts, the contact of a diode D1 and relay provides charging current for storage battery, the effect of a diode D1 is the one-way in order to ensure charging current, when inputting polarity by reversal connection, can guarantee that battery can not, to charger short circuit dischange, be one of principal character of the present embodiment 2 with the contact tandem compound of unilateral diode and relay.
Ammeter in Fig. 4 is connected in major loop, and detect charging current in order to simple ground, in shown connection, trigger current is not included in indicated value; Voltmeter in Fig. 4 connects inverse time at accumulator polarity, does not indicate the voltage of storage battery, when connection is correct, and the terminal voltage of instruction storage battery.When accessing separately charger, whether indicated value will meet " safety " standard depending on charger.
As mentioned above, although represented with reference to specific preferred embodiment and described the present invention, it shall not be construed as the restriction to the present invention self.Under the spirit and scope prerequisite of invention not departing from claims definition, can make a variety of changes in the form and details it; Such as, the mirror image circuit formed with reversed polarity device, the replacement of power-type device or Functional Unit device, the holohedral symmetry circuit of the commutative use of input and output, integrated power model etc.
Claims (8)
1. an electromobile battery charging process monitoring device, is characterized in that: at least comprise a voltmeter, ammeter, container, connector and a transmission line; Wherein, the connector mated with charger contacts is arranged on input, and the connector mated with battery-terminal is arranged on output; Electric loop is connected to form by transmission line between input and output; Described voltmeter is connected in parallel in electric loop, and described ammeter is connected in electric loop; Described voltmeter, ammeter and transmission line are enclosed in described container, and the read-out display of voltmeter and ammeter is arranged on container;
Also comprise input Check up polarity module, battery polar detection module, polarity identification logic module, current-limiting type bilateral analog switch, main electronic switch, RC time delay module and malfunction indicator lamp;
Described input Check up polarity module and described battery polar detection module are connected across between the input of electric loop and output respectively, and the signal common transport of detection is to described polarity identification logic module; Generation output signal is transferred to described current-limiting type bilateral analog switch when polarity meets by described polarity identification logic module; Described current-limiting type bilateral analog switch is in parallel with major loop by the gate nodes of main electronic switch, one end of current-limiting type bilateral analog switch is connected to the gate nodes of described main electronic switch and one end of RC time delay module, the other end is connected to the anode of described main electronic switch, and is connected to negative pole of output end through ammeter; The other end of described RC time delay module is connected to negative electrode and the input cathode of described main electronic switch; The positive pole of voltmeter is connected in input anode, and negative pole is connected on the symmetric points of described current-limiting type bilateral analog switch inside; The positive pole of malfunction indicator lamp is connected in the base stage of described polarity identification logic module simultaneously, and negative pole is connected with input anode.
2. electromobile battery charging process monitoring device according to claim 1, is characterized in that: described input Check up polarity module is made up of a divider resistance and a Diode series.
3. electromobile battery charging process monitoring device according to claim 1, is characterized in that: described battery polar detection module is a divider resistance.
4. electromobile battery charging process monitoring device according to claim 1, is characterized in that: described polarity identification logic module is PNP transistor, and its base stage is connected with the dividing point of input Check up polarity module and battery polar detection module simultaneously; The output stage of PNP transistor is connected with current-limiting type bilateral analog switch.
5. electromobile battery charging process monitoring device according to claim 1, is characterized in that: the mirror image circuit that described main electronic switch is one-way SCR or is made up of one-way SCR.
6. electromobile battery charging process monitoring device according to claim 5, is characterized in that: described current-limiting type bilateral analog switch comprises forward VMOS field effect transistor, oppositely VMOS field effect transistor, branch current sample resistance and bidirectional current limiting control unit; The output stage of described polarity identification logic module is connected to interconnected gate pole and the bidirectional current limiting control unit of described forward VMOS field effect transistor and reverse VMOS field effect transistor; The described drain electrode of forward VMOS field effect transistor is connected with one end of the gate nodes of one-way SCR and RC time delay module; The described reverse drain electrode of VMOS field effect transistor is connected with the anode of one-way SCR, and is connected to negative pole of output end through ammeter; Described branch current sample resistance is connected between two source electrodes of forward VMOS field effect transistor and reverse VMOS field effect transistor; Described bidirectional current limiting control unit is in parallel with described branch current sample resistance, bidirectional current limiting control unit is according to the voltage drop on branch current sample resistance, the output signal produced removes the interconnected gate pole controlling forward VMOS field effect transistor and reverse VMOS field effect transistor, removes to limit by changing gate voltage the electric current flowing through current-limiting type bilateral analog switch; The negative pole of voltmeter is connected between two source electrodes of forward VMOS field effect transistor and reverse VMOS field effect transistor, and positive pole is connected in input anode.
7. electromobile battery charging process monitoring device according to claim 1, it is characterized in that: described RC time delay module is made up of resistance R and electric capacity C parallel connection, wherein resistance R is the Part way of branch current, when branch current charges to electric capacity C, the time delay needed for the triggering of main electronic switch is produced.
8. electromobile battery charging process monitoring device according to claim 1, it is characterized in that: also comprise three diodes, a voltage-stabiliser tube, two power resistors, a relay and contacts thereof, a diode is connected between the positive pole of input and output head anode together with ammeter, normally open contact; No. two diodes and power resistor form a branch road and ammeter is connected in parallel between input anode and output head anode; After No. three diode, No. two power resistors and relay series connection, parallel connection is connected across between the positive pole of output and negative pole together with voltmeter; The input of voltage-stabiliser tube is connected between No. two power resistors and relay, and output is connected on negative pole of output end;
When battery access is correct, the forward current of battery through No. three diodes, then is powered to relay by after No. two power resistors, voltage-stabiliser tube voltage stabilizing, and the normally open contact of relay will close; Meanwhile, the electric energy of storage battery is triggered by a power resistor and No. two diode branch and is access in charger; After charger starts, the contact of a diode and relay provides charging current for storage battery.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310462010.2A CN103532188B (en) | 2013-09-30 | 2013-09-30 | Electric vehicle storage battery charging process monitoring device |
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| CN201310462010.2A CN103532188B (en) | 2013-09-30 | 2013-09-30 | Electric vehicle storage battery charging process monitoring device |
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| CN103532188B true CN103532188B (en) | 2015-04-29 |
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| CN104617562B (en) * | 2015-02-16 | 2018-07-20 | 中国北方车辆研究所 | A kind of automobile-used counnter attack connection device |
| CN104777430B (en) * | 2015-04-30 | 2017-09-22 | 西安科技大学 | Switching Power Supply dead electricity and accumulator cell charging and discharging detection indicating circuit and its design method |
| CN105186485B (en) * | 2015-07-31 | 2018-11-09 | 许继集团有限公司 | A kind of misconnection protection circuit |
| CN105262160A (en) * | 2015-09-29 | 2016-01-20 | 安徽华米信息科技有限公司 | Anti-reverse-connection circuit, anti-reverse-connection processing method, device and intelligent wearable equipment |
| CN105552877A (en) * | 2016-02-01 | 2016-05-04 | 凯迈(洛阳)电子有限公司 | Reverse connection monitoring device of power storage battery |
| CN105914824A (en) * | 2016-05-13 | 2016-08-31 | 深圳市科陆电子科技股份有限公司 | Direct current non-polarized frame type charging device |
| CN106684994A (en) * | 2017-01-03 | 2017-05-17 | 浙江绿源电动车有限公司 | Battery charging-discharging apparatus and electric bicycle |
| CN114167291B (en) * | 2021-12-06 | 2023-06-02 | 国网新疆电力有限公司克州供电公司 | Storage battery safety operation and maintenance management system for electric power internet of things of communication site |
| CN114640163A (en) * | 2022-05-18 | 2022-06-17 | 广东高斯宝电气技术有限公司 | Interface circuit for parallel operation of direct-current power supply and battery |
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