CN1956287B - Power control method of vehicle battery and its device - Google Patents

Power control method of vehicle battery and its device Download PDF

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Publication number
CN1956287B
CN1956287B CN2005101146586A CN200510114658A CN1956287B CN 1956287 B CN1956287 B CN 1956287B CN 2005101146586 A CN2005101146586 A CN 2005101146586A CN 200510114658 A CN200510114658 A CN 200510114658A CN 1956287 B CN1956287 B CN 1956287B
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China
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battery
main battery
voltage
circuit
vehicle
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CN2005101146586A
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Chinese (zh)
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CN1956287A (en
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王锦树
江又斌
程恺
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杰生自动技术有限公司
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Publication of CN1956287B publication Critical patent/CN1956287B/en

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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02TCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00Road transport of goods or passengers
    • Y02T10/80Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/92Energy efficient charging or discharging systems for batteries, ultracapacitors, supercapacitors or double-layer capacitors specially adapted for vehicles

Abstract

This invention relates to a car battery power management method and its device, which utilizes a battery management program, a protection circuit for protecting said device circuit and components, a car start-up and stopping detection circuit for detecting starting up/stopping with an engine generator device, a voltage current detection circuit for intercepting voltage current of the primary and standby batteries, a central processor, a voltage protection circuit for protecting foreign devices, an output control circuit for connecting or switching batteries, a timer for setting the time, a display for displaying states, and a buzzer for making a sound to make up of the car battery power management device to be parallel to the electrode ends of the primary and standby batteries to manage the on/off between batteries and the appliances by detecting the electricity and time.

Description

Power control method of vehicle battery and device thereof

Technical field

The present invention relates to a kind of vehicle battery management method and device thereof, relate in particular to a kind of electrode tip that can directly be parallel to vehicle main battery and reserve battery and use, and have in the management car between the electrical equipment and Vehicular battery be connected or cut-out, management battery may be with situation, the multifunctional management effect avoiding electric power to exhaust can't restarting and can when battery can't electric power storage, sound a warning.

Background technology

At vehicle with engine power or battery power, the management of Vehicular battery electric power comes into one's own day by day, and follow the epoch progressive, except the electrical equipment of vehicle necessity such as car light, starter motor, instrument, driving computer, air-conditioning, ignition system etc., significantly increase the consumption entertainment electronic appliances of many power consumptions such as notebook, DVD, sound equipment, illuminating lamp, refrigerator, external camping electrical appliance in the vehicle, each electrical equipment will consume many electric power; When Vehicular battery is closely aging can't accumulate a large amount of electric energy the time, the external connection electrical apparatus electricity consumption will cause power drain, and vehicle can't be restarted, and bring inconvenience or influence safety.Moreover the car owner may open car light or other external connection electrical apparatus and cause the Vehicular battery electric weight to exhaust under the situation of ignorant or carelessness for a long time, can't restart vehicle after the car owner returns, and brings inconvenience or influences safety.This situation will be especially serious under low temperature environment, and because of in snowfield or low temperature environment, battery efficiency is low, and electric power storage and discharge energy can not show a candle to car owner's expection, the easier safety problem that causes snowfield to cast anchor.The person often was in the low capacity state because of the electrical equipment power consumption makes Vehicular battery again, will easily cause battery efficiency to fail and do sth. in advance and wear out, and also should be prevented; Again one, Vehicular battery may be because of long-term its cycle life or the charger generation problem used, make battery can't electric power storage or charge capacity not as expection, also should warn the user to overhaul, in order to avoid the influence use.

When vehicle stop flame-out after, generator also with stop vehicle battery charging (most motor vehicle does not then have generator), electrical equipment can only rely on battery electric power to keep running.Known techniques is after engine stops, immediately or a period of time promptly cut off the supply of electric power of battery, U.S. Pat .Pat.No.4 as Sheldrake in 1985,493, No. 001, the U.S. Pat .Pat.No.6 of Cepynsky in 2000,111, the U.S. Pat .Pat.No.5 of No. 731 and Lendrum in 1994,327, No. 068, these a little technology can meet vehicle after stopping engine no longer needs with the demand of electric power, but when continuing to make electrical appliance, still needing the battery power management device to carry out electrical management, can be quite necessary for starting next time required to guarantee that battery has enough electric power.

Because modern vehicle all has capable control computer, it handles huge information and computing, though can from the row control computer, intercept battery status, but still quite inconvenience, main cause is, the capable control computer difference of various vehicle, the control computer program of more changing one's profession and to battery status output, the control computer of more changing one's profession of various vehicle will cause substantial difficulty.Battery power management device for an autonomous system, do not intercept the capable control computer data of vehicle and only be parallel to the battery power line, detecting for vehicle launch, as U.S. Pat .Pat.No.5,903, the 063rd, propose ignition noise and filter and the circuit example that amplifies, the device of wanting an integral body of still needing just can be installed on the vehicle; The TaiWan, China patent announcement is connected in the example that battery and starter and working voltage landing are thought differentiation for No. 579342 for another example, still is connected in starter except that substantial difficulty is arranged, and also will introduce too much noise, and cause the difficulty in the differentiation.Therefore, develop a conformability, easy, need not connect by row control computer or starter, only the Vehicular battery electrical management device that shielded battery is connected will the person of being to use presses for; The present invention designs at above-mentioned needs.

Summary of the invention

The object of the present invention is to provide a kind of Vehicular battery electrical management device; it is to utilize a Vehicular battery electrical management program; one in order to protect the protective circuit of this device circuit and assembly; has the vehicle launch of engine engine device or the vehicle launch that stops stops circuit for detecting in order to detecting; electric current and voltage circuit for detecting in order to the voltage and current of detecting described main battery; central processing unit; voltage protection circuit in order to the protection external connection electrical apparatus; in order to the output control circuit that battery is connected or cuts off; but timer in order to setting-up time; display in order to show state; and in order to send the buzzer formation of the sound; and make it directly be parallel to the electrode tip of vehicle main battery and reserve battery; can manage at this vehicle battery; comprise the management that the management that is connected between the electrical equipment and Vehicular battery in the car or cuts off and battery may be used situation; use the danger of avoiding Vehicular battery electric power to exhaust; and can can't sound a warning during electric power storage in battery; to remind the car owner to overhaul early, use and extending battery life and avoid influencing.

A further object of the present invention is to provide a kind of power control method of vehicle battery, and it is the Vehicular battery electrical management device that utilizes the present invention above-mentioned; The electrode tip that utilizes this battery power management device directly to be parallel to vehicle main battery and reserve battery again can be reached user mode, and must not connect vehicle control system, row control computer or other electrical equipment; Again with being connected or cut-out between electric-quantity monitoring and electrical equipment in timing time is managed car and the Vehicular battery, use and avoid vehicle behind switch-off, to continue to use in the car electrical equipment and exhaust that electric power causes producing the danger that vehicle can't be restarted or cast anchor, and the management battery may be used situation, and can can't sound a warning during electric power storage in battery, to remind the car owner to overhaul early, use and extending battery life and avoid influencing.

A kind of power control method of vehicle battery is characterized in that according to the present invention, and it has the main battery and the reserve battery of the vehicle of engine engine device in order to management, and this electric power management method comprises following step:

According to the main battery and the reserve battery capacity that connect, set the timing time of timer respectively, the timing time of this timer, comprise main battery power supply setting-up time Tsetm, and reserve battery power supply setting-up time Tsetb, wherein, this Tsetm and Tsetb calculate according to following manner:

Tsetm=(Cpm-Ck)/∑ Ai reaches

Tsetb=(Cpb-Ck)/∑Ai;

Wherein, Tsetm is a main battery power supply setting-up time;

Tsetb is a reserve battery power supply setting-up time;

Cpm is the main battery nominal capacity;

Cpb is the reserve battery nominal capacity;

∑ Ai is the total amperage of external connection electrical apparatus;

Ck keeps vehicle to start minimum required electric weight once more 20 times;

According to charging voltage whether exist and the vehicle launch noise whether greater than background noise, to judge whether vehicle starts and whether charger normally exports charging voltage, take whether to main battery or reserve battery charging;

According to the electric current and voltage of main battery end, the vehicle launch noise characteristic of main battery end and the normal output charging voltage and current characteristic of Vehicular charging machine, judge the charged state of vehicle main battery; If setting maximum charge after the time, the electric weight of vehicle main battery or reserve battery does not reach when being scheduled to electric weight as yet, judges vehicle main battery or reserve battery possible breakdown;

According to the electric current and voltage of main battery end, the vehicle launch noise characteristic of main battery end and the normal output charging voltage and current characteristic of Vehicular charging machine, judge whether vehicle is shut down and stopped main battery being charged, and under the situation of main battery power supply, when the electric weight of main battery is reduced to the setting electric weight, stop the electric weight output of main battery; Or when the main battery power supply reaches the timing time of timer setting, stop the output of main battery electric weight;

According to the electric current and voltage of reserve battery, the vehicle launch noise characteristic of main battery end and the normal output charging voltage and current characteristic of Vehicular charging machine, whether shut down and stop reserve battery being charged to judge vehicle, whether main battery stops power supply, under the situation of reserve battery power supply, when the electric weight of reserve battery is reduced to the setting electric weight, stop the electric weight output of reserve battery; Or when the reserve battery power supply reaches the timing time of timer setting, stop the output of main battery electric weight.

According to another kind of power control method of vehicle battery of the present invention, it is characterized in that it is the main battery and the reserve battery of vehicle powered that its management has with the battery, this electric power management method comprises following step:

According to the main battery and the reserve battery capacity that connect, set the timing time of timer respectively, the timing time of this timer, comprise main battery power supply setting-up time Tsetm, and reserve battery power supply setting-up time Tsetb, wherein, this Tsetm and Tsetb calculate according to following manner:

Tsetm=(Cpm-Ck)/∑ Ai reaches

Tsetb=(Cpb-Ck)/∑Ai;

Wherein, Tsetm is a main battery power supply setting-up time;

Tsetb is a reserve battery power supply setting-up time;

Cpm is the main battery nominal capacity;

Cpb is the reserve battery nominal capacity;

∑ Ai is the total amperage of external connection electrical apparatus;

Ck keeps vehicle to start minimum required electric weight once more 20 times;

According to the electric current and voltage of main battery end, under the situation of main battery power supply, when the electric weight of main battery is reduced to the setting electric weight, stop the electric weight output of main battery; Or when the main battery power supply reaches the timing time of timer setting, stop the output of main battery electric weight;

Under the situation of reserve battery power supply, when the electric weight of reserve battery is reduced to the setting electric weight, stop the electric weight output of reserve battery; Or when the reserve battery power supply reaches the timing time of timer setting, stop the output of main battery electric weight.

According to a further aspect in the invention, the invention provides a kind of Vehicular battery electrical management device, it is characterized in that it is parallel on the main battery of the vehicle with engine engine device, it comprises reserve battery; It comprises in order to protect the protective circuit of this device circuit and assembly; Has the vehicle launch of engine engine device or the vehicle launch that stops stops circuit for detecting in order to detecting; One electric current and voltage circuit for detecting in order to the voltage and current of detecting described main battery; Central processing unit; Voltage protection circuit in order to the protection external connection electrical apparatus; In order to control the output control circuit that main battery or reserve battery are connected or cut off with external connection electrical apparatus; In order to set the timer of above time of at least two groups; Single or multiple light-emitting diode display in order to the controlled state that shows main battery or reserve battery; In order to send the buzzer of the single or multiple frequency sound; Wherein:

This protective circuit has short-circuit protection circuit and reverse polarity protection's circuit, avoids causing electric current excessive and oppositely cause damage because of electrode because of short circuit with protection Vehicular battery electrical management device internal circuit and electric component;

This central processing unit receives the voltage and the current values of electric current and voltage circuit for detecting output; Receive vehicle launch noise and background noise intrinsic numeric that vehicle launch stops circuit for detecting output; Described voltage and current values, described vehicle launch noise and background noise intrinsic numeric are analyzed, and received timer signal, export a signal and give output control circuit; Output frequency signal is given buzzer; The output shows signal is given display; Output timing reset signal is given timer;

This voltage protection circuit has overvoltage crowbar and under-voltage protection circuit, avoids overvoltage and low-voltage damage with the protection external equipment;

Timer is set power supply setting-up time Tsetm=(the Cpm-Ck)/∑ Ai of main battery;

Timer is set the power supply setting-up time of reserve battery: Tsetb=(Cpb-Ck)/∑ Ai;

Wherein, Cpm is the main battery nominal capacity;

Cpb is the reserve battery nominal capacity;

∑ Ai is the total amperage of external connection electrical apparatus;

Ck keeps vehicle to start minimum required electric weight once more 20 times;

Exist according to charging voltage, and whether the vehicle launch noise to judge whether vehicle start and charger normally export charging voltage, determines whether main battery and reserve battery charged greater than background noise;

When the main battery electric weight reaches the setting electric weight, stop the output of main battery electric weight; Or

When the main battery power supply reaches setting-up time Tsetm, stop the output of main battery electric weight;

Whether vehicle launch noise characteristic and the Vehicular charging machine according to the electric current and voltage of reserve battery, main battery end normally exports charging voltage and current, whether main battery stops power supply, judge whether vehicle is shut down and stopped battery charge, whether main battery stops power supply, and reserve battery is carried out managing electric quantity;

When the reserve battery electric weight reaches the setting electric weight, stop the output of reserve battery electric weight;

When the reserve battery power supply reaches setting-up time Tsetb, stop the output of reserve battery electric weight.

Description of drawings

Fig. 1 is the Vehicular battery electrical management device schematic diagram of preferred embodiment of the present invention;

Fig. 2 is the battery power management device circuit figure of preferred embodiment of the present invention;

Fig. 3 is the battery power management device main battery and the reserve battery management key diagram of preferred embodiment of the present invention.

Drawing reference numeral explanation: 1-vehicle main battery; 2-Vehicular battery electrical management device; The 21-reserve battery; The 22-protective circuit; The 23-vehicle launch stops circuit for detecting; 24-electric current and voltage circuit for detecting; The 25-central processing unit; The 26-voltage protection circuit; The 27-output control circuit; The 28-timer; The 291-display; The 292-buzzer; The 3-external connection electrical apparatus; The 4-charger; Cm-main battery 1 electric weight; Cb-reserve battery 21 electric weight; Cpm-main battery 1 nominal capacity; Cpb-reserve battery 21 nominal capacitys; Tsetm-main battery 1 power supply setting-up time; Tsetb-reserve battery 21 power supply setting-up times; The Tg-maximum charge time; Vm-main battery 1 voltage; Vb-reserve battery 21 voltages; VHm-main battery 1 Full Charge Capacity voltage; VHb-reserve battery 21 Full Charge Capacity voltages; VHHm-main battery 1 limit high voltage; VHHb-reserve battery 21 limit high voltages; But the minimum voltage of VLm-main battery 1 safe power supply; But the minimum voltage of VLb-reserve battery 21 safe power supplies; VLLm-main battery 1 limit low-voltage; VLLb-reserve battery 21 limit low-voltages; Vpm-main battery 1 nominal voltage; Vpb-reserve battery 21 nominal voltages.

Embodiment

Consult Fig. 1, Fig. 2, shown in Figure 3,1: one group of 12VDC of master battery pack, lead-acid battery nominal capacity Cpm is 34AH, having 21: one groups of 12VDC lead-acid batteries of positive pole and negative pole output battery backup nominal capacity Cpb is 14AH, have positive pole and negative pole output battery power management device 2 and vehicle electrical system connected mode: anodal in parallel in main battery 1 and reserve battery 21, be series at vehicle external connection electrical apparatus equipment 3, to understand and have the knack of present technique person, though following detailed description will be mentioned preferred embodiment of the present invention and using method, the present invention is not limited to preferred embodiment of the present invention and using method.On the contrary, the present invention is broad scope and will only be confined to claims.

The power control method of vehicle battery of preferred embodiment of the present invention, be normally to battery charge when vehicle is advanced, or vehicle when stopping to the management of power use of vehicle main battery 1 and reserve battery 21 to avoid running down of battery, or vehicle when restarting at any time to the charging of vehicle main battery 1 and reserve battery 21, or can't sound a warning during electric power storage in vehicle main battery 1 and reserve battery 21.

The Vehicular battery electrical management device 2 of preferred embodiment of the present invention is to be parallel to vehicle main battery 1, comprises a reserve battery 21, in order to when vehicle main battery exhausts, can provide non-firm power to use for external connection electrical apparatus 3; One protective circuit 22 is in order to take the internal circuit and the assembly of short-circuit protection and reverse polarity protection's device to the electric current and voltage that enters; One electric current and voltage circuit for detecting 24 in order in sample time main battery 1 and reserve battery 21 are intercepted voltage-current characteristics, is sent into central processing unit 25; One vehicle launch stops circuit for detecting 23, sample time the noise that main battery 1 power line intercepts vehicle launch or stops to be sent into central processing unit 25 in order to again; One display 291 is in order to be shown battery management state or warning; One buzzer 292 is in order to give sound caution with battery management state or warning; One voltage protection circuit 26 in order to the voltage range control to input, with the voltage of protection external connection electrical apparatus 3 input within the specific limits, avoids external connection electrical apparatus 3 to damage; One output control circuit 27 is in order to receiving central processing unit 25 and voltage protection circuit 26, connects or cuts off in order to main battery 1 and reserve battery 21 are carried out electrical management.

Power control method of vehicle battery in preferred embodiment of the present invention, when vehicle normally moves, when if vehicle has charger 4 and normal operation, will charge to vehicle main battery 1 (and reserve battery 21 of the present invention), according to running time length may fill main battery 1 (and reserve battery 21 of the present invention) full, this moment, main battery 1 voltage Vm then was higher than the voltage VHm of the full electricity of battery, reserve battery 21 voltage Vb then are higher than the voltage VHb of the full electricity of battery, main battery 1 electric weight is near nominal electric weight Cpm, reserve battery 21 electric weight are near nominal electric weight Cpb, promptly

And Vm 〉=VHm

And Vb 〉=VHb

At present embodiment, VHm=13.3~14.0V, VHb=13.4~14.1V.If the charging interval is higher than maximum charge time T g, when main battery 1 voltage is lower than the particular percentile of VHm, or reserve battery 21 voltages are the charge capacity deficiency for main battery 1 or reserve battery 21 when being lower than the particular percentile of VHb, may be because of cell degradation or fault.

After vehicle stops to stop working, charger 4 no longer continues main battery 1 (and reserve battery 21 of the present invention) charging, the electric weight capacity C m electric weight capacity C b that will be less than or equal to Cpm, reserve battery 21 of vehicle main battery 1 will be less than or equal to Cpb this moment, if battery does not normally not damage or be aging, main battery 1 voltage Vm then was higher than minimum voltage VLm, the reserve battery 21 voltage Vb that battery can power and then was higher than the minimum voltage VLb that battery can be powered this moment.That is,

Cm≤Cpm and Vm 〉=VLm

Cb≤Cpb and Vb 〉=VLb

Wherein, VLm, VLb are specified according to the battery of the different labels of different vehicle, battery as example use of the present invention, its minimum voltage of powering is VLm=10.5~10.0V, VLb=10.7~10.2V, when main battery 1 voltage is lower than VLm (reserve battery 21 voltages are lower than VLb), if external connection electrical apparatus equipment continue to use, will cause the permanent infringement of battery, and not have enough electric power vehicle is started once more.The Vehicular battery electrical management device embodiment of power control method of vehicle battery utilization of the present invention, after vehicle is flame-out, vehicle main battery 1 still continues external connection electrical apparatus 3 power supplies, 4 of chargers are no longer to battery charge, current/voltage circuit for detecting 24 can detect Shu of short duration voltage and electric current landing and rise fast through after protective circuit 22 protections at this moment; After vehicle launch stops 23 of circuit for detecting and can see through protective circuit 22 protections, detect voltage noise that the back of cutting the engine produces and calm down fast.For preventing that current/voltage circuit for detecting 23 and vehicle launch from stopping circuit for detecting 24 and other electric component is subjected to the big electric current damage of big voltage; be provided with protective circuit 22 before this two circuit, protective circuit 22 has short-circuit protection and reverse polarity protection in Vehicular battery electrical management device embodiment of the present invention.Current/voltage circuit for detecting 23 is sent the electric current that detects and voltage value into central processing unit 25, vehicle launch and is stopped 23 of circuit for detecting voltage noise is sent into central processing unit 25.Central processing unit 25 pairs of electric currents, voltage, voltage noises are compared and are judged, when the landing of of short duration voltage and electric current with go up fast and voltage produces noise and calms down fast, when two conditions all satisfy simultaneously, then central processing unit 25 outputs one signal is given output control circuit 27,27 of output control circuits continue to connect vehicle main battery 1, by 3 power supplies of 1 pair of external connection electrical apparatus of vehicle main battery; Central processing unit 25 also begins to send a signal timer 28 is begun main battery power supply timing.But 8 of timer 2s are set according to the normal supplying time of battery electric quantity, and the method for setting is as follows:

Tsetm=(Cpm-Ck)/∑Ai

In power control method of vehicle battery embodiment of the present invention, the total amperage ∑ of external connection electrical apparatus Ai is 9.6A, but the normal amount of power supply of battery is 85%Cpm, start 20 minimum required electric weight Ck once more is 1.4Ah, and then the time T setm that sets of main battery power supply timer is 2 hours 45 minutes.

In the process of main battery 1 power supply, current/voltage circuit for detecting 24 will constantly be taken a sample, send electric current and magnitude of voltage and give central processing unit 25 and voltage protection circuit 26, electric current and magnitude of voltage that voltage protection circuit 26 received current voltage detection circuits are sent, if find that the battery abnormal voltage is too high, be higher than main battery 1 limit high voltage VHHm, then sending a signal cuts off main battery 1 output for output control circuit 27, cause the battery permanent damages or cause danger so as not to continuing power supply with the protection battery, and can protect external connection electrical apparatus 3 to avoid overvoltage and damage; If find that the battery abnormal voltage is low excessively; be lower than VLLm; then sending a signal cuts off main battery 1 output for output control circuit 27; to protect battery to cause the battery permanent damages or to cause danger so as not to continuing to power; and can protect external connection electrical apparatus 3 to avoid low-voltage and damage, this is one of feature of the present invention.In the present embodiment, VHHm is made as about 16.0V, VLLm and is made as about 9.6V.

Before timer 28 timing times arrived Tsetm, according to the time of setting, central processing unit 25 was sent a signal, sent the sound of first frequency in buzzer 292, and warning is closed main battery 1 and opened reserve battery 21; Central processing unit 25 is sent a signal, shows that in display 291 electric weight that vehicle main battery 1 is set is about to arrive, and will close main battery 1 and open reserve battery 21.When timer 28 timing times arrive Tsetm, central processing unit 25 is sent a signal, driving output control circuit 27 connects reserve battery 21 and cuts off main battery 1, continuing power supply uses for external connection electrical apparatus 3, and unlatching reserve battery power supply timer 28 picks up counting, central processing unit 25 synchronous signals make buzzer 292 send the 3rd frequency sound, central processing unit 25 is sent reserve battery 21 and begun power supply signal to display 291, to remind the car owner.This is a feature more of the present invention.

Moreover, during main battery 1 power supply, current/voltage circuit for detecting 24 will constantly be taken a sample, send electric current A and voltage V value to central processing unit 25 and voltage protection circuit 26, when if main battery 1 electric weight has been reduced to CHm, no matter whether the time arrives Tsetm, central processing unit 25 is sent the sound that a signal sends first frequency for buzzer 292, and warning will be closed main battery 1 and be opened reserve battery 21; Central processing unit 25 is sent a signal, shows that in display 291 electric weight that vehicle main battery is set is about to arrive, and will close main battery 1 and open reserve battery 21.Behind a special time; central processing unit 25 outputs signal to output control circuit 27; output control circuit 27 cuts off main battery 1 output; central processing unit 25 outputs signal to output control circuit 27; output control circuit 27 connects reserve battery 21 outputs; central processing unit 25 synchronous signals make buzzer 292 send the 3rd frequency sound; central processing unit 25 is sent reserve battery 21 and has been begun power supply signal to display 291; cause the battery permanent damages or cause danger so as not to continuing power supply with protection main battery 1, but and the residual fraction electric weight buy car in installments start once more required.This situation be betide vehicle stop flame-out before, battery does not fill full as yet or battery is day by day aging can not hold due to the normal electric weight of foot.This is a further feature of the present invention.

After vehicle stops to stop working, when 1 pair of vehicle external connection electrical apparatus of main battery 3 power supply, current/voltage circuit for detecting 24 will according to detect sample time cell voltage V and loop current A, vehicle launch stop 23 of circuit for detecting according to sample time detecting vehicle whether start once more.Stop circuit for detecting 23 detecting and come from the starting characteristic once more of main battery 1 electrode and central processing unit 25 and receive current/voltage circuit for detecting 24 and detect charger 4 and begin characteristic to vehicle main battery 1 (the present invention contains reserve battery 21 in addition) charging when existing simultaneously when central processing unit 25 receives vehicle launch, judge that then vehicle starts once more and charger 4 is normally exported, 25 of central processing units are sent a signal and are given output control circuit 27, make output control circuit 27 connect main battery 1 and reserve battery 21, begin main battery 1 and reserve battery 21 chargings; 25 of central processing units send reset signal to timer 28, and timer 28 stops timing and replacement.This is a feature more of the present invention.

But the reserve battery timing time is then set according to the normal supplying time of reserve battery electric weight, and the method for setting is as follows:

Tsetb=(Cpb-Ck)/∑Ai

In power control method of vehicle battery embodiment of the present invention, the total amperage of external equipment is 9.6A, but the normal amount of power supply of battery is 80%Cpb, start 20 minimum required electric weight once more is 1.4Ah, and then time of setting of reserve battery timing time is 1 hour.

In the process of reserve battery 21 power supplies, electric current and voltage circuit for detecting 24 will constantly be taken a sample, send electric current A and voltage V value to central processing unit 25 and voltage protection circuit 26, voltage protection circuit 26 receives electric current and the magnitude of voltage that electric current and voltage circuit for detecting 24 is sent, if find that reserve battery 21 abnormal voltages are too high, be higher than reserve battery 21 limit high voltage VHHb, then sending a signal cuts off reserve battery 21 outputs for output control circuit 27, cause reserve battery 21 permanent damages or cause danger so as not to continuing power supply with the protection battery, and can protect external connection electrical apparatus 3 to avoid overvoltage and damage; 3 of central processing units are sent a signal and are sent the sound of the 4th frequency for buzzer 292, send the unusual warning of battery; Central processing unit 3 is also sent a signal, shows that in display 291 reserve battery 21 is unusual, with the warning car owner.If find that the battery abnormal voltage is low excessively, be lower than reserve battery 21 limit low-voltage VLLb, then sending a signal cuts off reserve battery 21 outputs for output control circuit 27, cause the battery permanent damages or cause danger so as not to continuing power supply with protection reserve battery 21, and can protect external connection electrical apparatus 3 to avoid low-voltage and damage; 3 of central processing units are sent a signal and are sent the sound of the 4th frequency for buzzer 292, send the unusual warning of battery; Central processing unit 25 is also sent a signal, shows that in display 291 reserve battery 21 is unusual, with the warning car owner.This is an another feature of the present invention.In the present embodiment, VHHb is made as about 16.0V, VLLb and is made as about 9.6V.

Before central processing unit 25 reserve battery timing times arrive Tsetb, according to the time of setting, central processing unit 25 is sent a signal, sends the sound of second frequency in buzzer 292, the electric weight that reminder's reserve battery 21 is set is about to arrive, and will close reserve battery 21; Central processing unit 25 is sent a signal, shows that in display 291 electric weight that reserve battery is set is about to arrive, and will close reserve battery 21.When reserve battery 21 timing times arrive Tsetb, central processing unit 25 is sent a signal, drive output control circuit 27 and cut off reserve battery 21 power supplies, central processing unit 25 is sent a signal simultaneously makes buzzer 292 send the 4th frequency sound, central processing unit 25 is sent reserve battery 21 and has been stopped power supply signal to display 291, uses for starting once more with residual electric power.This is an another feature of the present invention.

Further, and during reserve battery 21 power supplies, electric current and voltage circuit for detecting 24 will constantly be taken a sample, send electric current and magnitude of voltage and give central processing unit 25 and voltage protection circuit 26, when if reserve battery 21 electric weight have been reduced to CLb, no matter whether the time arrives Tsetb, central processing unit 25 is sent a signal and is sent the second frequency sound for buzzer 292, is about to use up and will closes with warning car owner reserve battery 21; Central processing unit 25 is also sent a signal, shows that in display 291 electric weight that reserve battery 21 is set is about to arrive, and will close reserve battery 21.Central processing unit 25 and after a fixed time; output signal to output control circuit 27; 27 of output control circuits cut off reserve battery 21 outputs; central processing unit 25 synchronous signals make buzzer 292 send the 4th frequency sound, central processing unit 25 is sent reserve battery 21 and stopped power supply signal to display 291; and cause the battery permanent damages or cause danger so as not to continuing power supply with the protection battery, but and the residual fraction electric weight buy car in installments start once more required.This situation is to betide, and before vehicle stopped to stop working, reserve battery 21 does not fill full as yet or battery has day by day worn out can not hold due to the normal electric weight of foot.This is another feature of the present invention.

When 21 pairs of vehicle external connection electrical apparatus of reserve battery 3 power supply, electric current and voltage circuit for detecting 24 will according to detect sample time cell voltage and loop current, vehicle launch stop 23 of circuit for detecting according to sample time detecting vehicle whether start once more.Stop circuit for detecting 23 detecting and come from the starting characteristic once more of vehicle main battery electrode and central processing unit 25 and receive voltage detection circuit 24 and detect charger 4 and begin characteristic to the vehicle main battery charging when existing simultaneously when central processing unit 25 receives vehicle launch, judge that then vehicle has started and charger 4 is normally exported, 25 of central processing units are sent a signal and are given output control circuit 27, make output control circuit 27 connect main battery 1 and reserve battery 21, begin main battery 1 and reserve battery 21 chargings; 25 of central processing units send reset signal to timer 28, and timer 28 stops timing and replacement.This is a further feature of the present invention.

Illustrate that power control method of vehicle battery of the present invention is as follows, as shown in Figure 3:

(1), sets the timing time of timer 28, Tsetm and Tsetb according to the main battery 1 and reserve battery 21 capacity that connect; According to the main battery 1 and reserve battery 21 capacity and charger output current characteristic that connect, set maximum charge time T g;

(2) exist according to charging voltage, and whether the vehicle launch noise is greater than background noise, to judge whether vehicle starts and charger 4 normal output charging voltage characteristics, and whether decision is to main battery 1 and reserve battery 21 chargings;

(3) normally export the charging voltage and current characteristic according to the electric current and voltage of main battery 1 end, the vehicle launch noise characteristic and the Vehicular charging machine of main battery 1 end, judge that Vehicular battery is whether in charged state and whether fill full.If after setting-up time, the electric weight of vehicle main battery 1 and reserve battery 21 does not reach when being scheduled to electric weight as yet, judges the Vehicular battery possible breakdown;

(4) normally exports the charging voltage and current characteristic according to the electric current and voltage of main battery 1 end, the vehicle launch noise characteristic and the Vehicular charging machine of main battery 1 end, judge whether vehicle is shut down and stopped battery charge, and managing electric quantity is carried out in 1 power supply to main battery:

(4-1) when main battery 1 electric weight reaches the setting electric weight, stop main electric 1 electric weight output; Or

(4-2) when main battery 1 power supply reaches setting-up time Tsetm, stop the output of main battery 1 electric weight;

(5) according to the vehicle launch noise characteristic and the Vehicular charging machine of the electric current and voltage of reserve battery 21, main battery 1 end normally export the charging voltage and current characteristic, whether main battery 1 stops power supply, judge whether vehicle is shut down and stopped battery charge, whether main battery 1 stops power supply, and reserve battery 21 is carried out managing electric quantity;

(5-1) when reserve battery 21 electric weight reach the setting electric weight, stop to be equipped with

Export with battery 21 electric weight;

(5-2) when reserve battery 21 power supplies reach setting-up time Tsetb,

Stop the output of reserve battery 21 electric weight.

Now illustrate again Vehicular battery electrical management device of the present invention to make flowing mode as follows:

(1) Vehicular battery electrical management device of the present invention, 3 outputs that are connected in output control circuit 27 of external connection electrical apparatus that only be parallel to vehicle main battery 1, be parallel to reserve battery 21, the car owner use;

(2) the electric current and voltage circuit for detecting 24 detecting electric current and voltage, the vehicle launch that come from main battery 1 end stops vehicle launch noise characteristic and the Vehicular charging machine 4 normal output charging voltage characteristics that circuit for detecting 24 detectings come from the vehicle main battery end;

(2-1) when the charging voltage existence, and the vehicle launch noise is greater than the background noise;

(2-2) central processing unit 25 is sent a signal and is given output control circuit 27;

(2-3) output control circuit 27 connects vehicle main battery 1 and reserve battery 21, begins main battery 1 and reserve battery 21 chargings;

(2-4) central processing unit 25 is sent a reset signal and is given timer 28;

(2-5) timer 28 timing are made zero;

(2-6) central processing unit 25 is sent in the vehicle battery charging shows signal and is given display 291;

(3) the electric current and voltage circuit for detecting 24 detecting electric current and voltage, the vehicle launch that come from main battery 1 end stops the vehicle launch noise characteristic of circuit for detecting 23 detecting main batterys 1 end and Vehicular charging machine and normally exports the charging voltage and current characteristic and do not exist simultaneously;

(3-1) when noise characteristic less than background noise and voltage during less than charging voltage;

(3-2) if voltage less than VLm,

(3-2-1) central processing unit 25 is sent the 5th frequency signal and is given buzzer 292;

(3-2-2) central processing unit 25 is sent Vehicular battery and is not filled full charging shows signal as yet and give display 291;

After (3-2-3) central processing unit 25 postpones special time, send a signal and give output control circuit 27;

(3-2-4) output control circuit cuts off main battery 1 output, and cuts off reserve battery 21 outputs;

(3-3) if voltage greater than VLm,

(3-3-1) central processing unit 25 is sent a signal and is given output control circuit 27;

(3-3-2) output control circuit 27 connects main battery 1, and cuts off reserve battery 21, by 3 discharges of 1 pair of external connection electrical apparatus of main battery;

(3-3-3) electric current and voltage circuit for detecting 24 is sent the electric current and voltage value into central processing unit 25 according to sample time;

(3-3-4) vehicle launch stops circuit for detecting 23 detecting noise characteristics, sends into central processing unit 25;

(3-3-5) central processing unit 25 is sent at the beginning timing signal and is given timer 28;

(3-3-6) timer 28 Tsetm that picks up counting;

(3-3-7) after timing time Tsetm arrives, send a signal and give central processing unit 25,

(3-3-7-1) central processing unit 25 is sent the first frequency signal and is given buzzer 292;

After (3-3-72) central processing unit 25 postpones special time, send a signal and give output control circuit 27;

(3-3-7-3) output control circuit 27 cuts off main battery 1 output, and connects reserve battery 21 outputs;

(3-3-7-4) central processing unit 25 is sent the second frequency signal and is given buzzer 292;

(3-3-7-5) central processing unit 25 is sent reserve battery 21 signal in using and is given display 291.

(3-3-8) when timing time Tsetm no show still, and

(3-3-8-1) when main battery 1 voltage is lower than VLm;

(3-3-8-2) central processing unit 25 is sent the 5th frequency signal and is given buzzer 292;

After (3-3-8-3) central processing unit postpones special time, send a signal and give output control circuit 27;

(3-3-8-4) output control circuit 27 cuts off main battery 1 output, and connects reserve battery 21 outputs;

(3-3-8-5) central processing unit 25 stops to send the 4th frequency signal to buzzer 292;

(3-3-8-6) central processing unit send reserve battery 21 use in shows signal give display 291.

During (3-4) reserve battery 21 used, central processing unit 25 was sent at the beginning timing signal and is given timer 28, timer 28 Tsetb that picks up counting,

(3-4-1) after timing time Tsetb arrives, send a signal and give central processing unit 25,

(3-4-1-1) central processing unit 25 is sent the second frequency signal and is given buzzer 292;

After (3-4-1-2) central processing unit 25 postpones special time, send a signal and give output control circuit 27;

(3-4-1-3) output control circuit 27 cuts off 21 outputs of vehicle reserve battery;

(3-4-1-4) central processing unit 25 stops to send the second frequency signal to buzzer 292;

(3-4-1-5) central processing unit 25 is sent reserve battery 21 and is exhausted shows signal and give display 291;

(3-4-2) when timing time Tsetb no show still,

(3-4-2-1) when reserve battery 21 voltages are lower than VLb;

(3-4-2-2) central processing unit 25 is sent the 5th frequency signal and is given buzzer 292;

After (3-4-2-3) central processing unit 25 postpones special time, send a signal and give output control circuit 27;

(3-4-2-4) output control circuit 27 cuts off reserve battery 21 outputs;

(3-4-2-5) central processing unit 25 is sent the 4th frequency signal and is given buzzer 292;

(3-4-2-6) central processing unit 25 is sent reserve battery 21 and is exhausted shows signal and give display 291.

(4) repeat the action of above-mentioned (3)~(4).

Claims (12)

1. a power control method of vehicle battery is characterized in that, it has the main battery and the reserve battery of the vehicle of engine engine device in order to management, and this electric power management method comprises following step:
According to the main battery and the reserve battery capacity that connect, set the timing time of a timer respectively, the timing time of this timer, comprise main battery power supply setting-up time Tsetm, and reserve battery power supply setting-up time Tsetb, wherein, this Tsetm and Tsetb calculate according to following manner:
Tsetm=(Cpm-Ck)/∑ Ai reaches
Tsetb=(Cpb-Ck)/∑Ai;
Wherein, Tsetm is a main battery power supply setting-up time;
Tsetb is a reserve battery power supply setting-up time;
Cpm is the main battery nominal capacity;
Cpb is the reserve battery nominal capacity;
∑ Ai is the total amperage of external connection electrical apparatus;
Ck keeps vehicle to start minimum required electric weight once more 20 times;
According to charging voltage whether exist and the vehicle launch noise whether greater than background noise, judging whether vehicle starts and whether charger normally exports charging voltage, whether decision to this main battery or the charging of this reserve battery;
According to the electric current and voltage of this main battery end, the vehicle launch noise characteristic of this main battery end and the normal output charging voltage and current characteristic of Vehicular charging machine, judge the charged state of this main battery of vehicle; If setting maximum charge after the time, the electric weight of this main battery of vehicle or this reserve battery does not reach when being scheduled to electric weight as yet, judges this main battery of vehicle or this reserve battery fault;
According to the electric current and voltage of main battery end, the vehicle launch noise characteristic of main battery end and the normal output charging voltage and current characteristic of Vehicular charging machine, judge whether vehicle is shut down and stopped the charging of this main battery, and under the situation of main battery power supply, when the electric weight of main battery is reduced to the setting electric weight, stop the electric weight output of this main battery; Maybe when this main battery power supply reaches this main battery power supply setting-up time Tsetm of timer setting, stop the output of this main battery electric weight;
According to the electric current and voltage of this reserve battery, the vehicle launch noise characteristic of this main battery end and the normal output charging voltage and current characteristic of Vehicular charging machine, whether shut down and stop the charging of this reserve battery to judge vehicle;
When this main battery is stopped power supply, under the situation of this reserve battery power supply, when the electric weight of this reserve battery is reduced to the setting electric weight, stop the electric weight output of this reserve battery; Maybe when this reserve battery power supply reaches this reserve battery power supply setting-up time Tsetb of this timer setting, stop the output of this reserve battery electric weight.
2. a power control method of vehicle battery is characterized in that, it is the main battery and the reserve battery of vehicle powered that its management has with the battery, and this electric power management method comprises following step:
According to the main battery and the reserve battery capacity that connect, set the timing time of a timer respectively, the timing time of this timer, comprise main battery power supply setting-up time Tsetm, and reserve battery power supply setting-up time Tsetb, wherein, this Tsetm and Tsetb calculate according to following manner:
Tsetm=(Cpm-Ck)/∑ Ai reaches
Tsetb=(Cpb-Ck)/∑Ai;
Wherein, Tsetm is a main battery power supply setting-up time;
Tsetb is a reserve battery power supply setting-up time;
Cpm is the main battery nominal capacity;
Cpb is the reserve battery nominal capacity;
∑ Ai is the total amperage of external connection electrical apparatus;
Ck keeps vehicle to start minimum required electric weight once more 20 times;
According to the electric current and voltage of this main battery end, under the situation of this main battery power supply, when the electric weight of this main battery is reduced to the setting electric weight, stop the electric weight output of this main battery; Maybe when this main battery power supply reaches this main battery power supply setting-up time Tsetm of this timer setting, stop the output of this main battery electric weight;
Under the situation of this reserve battery power supply, when the electric weight of this reserve battery is reduced to the setting electric weight, stop the electric weight output of this reserve battery; Maybe when this reserve battery power supply reaches this reserve battery power supply setting-up time Tsetb of this timer setting, stop the output of this reserve battery electric weight.
3. Vehicular battery electrical management device, manage with the described power control method of vehicle battery of claim 1, it is characterized in that it is parallel on the main battery of the vehicle with engine engine device, described Vehicular battery electrical management device comprises reserve battery; One in order to protect the protective circuit of this device internal circuit and electric component; One has the vehicle launch of engine engine device or the vehicle launch that stops stops circuit for detecting in order to detecting; One electric current and voltage circuit for detecting in order to the voltage and current of detecting described main battery; One central processing unit; One voltage protection circuit in order to the protection external connection electrical apparatus; One in order to control the output control circuit that main battery or reserve battery are connected or cut off with external connection electrical apparatus; One in order to set the timer of above time of at least two groups; One single or multiple light-emitting diode display in order to the controlled state that shows main battery or reserve battery; One in order to send the buzzer of the single or multiple frequency sound; Wherein:
This protective circuit has short-circuit protection circuit and reverse polarity protection's circuit, avoids causing electric current excessive and oppositely cause damage because of electrode because of short circuit with protection Vehicular battery electrical management device internal circuit and electric component;
This central processing unit receives the voltage and the current values of this electric current and voltage circuit for detecting output; Receive vehicle launch noise and background noise intrinsic numeric that this vehicle launch stops circuit for detecting output; Described voltage and current values, described vehicle launch noise and background noise intrinsic numeric are analyzed, and received this timer signal, export a signal and give this output control circuit; Export a frequency signal and give this buzzer; Export a shows signal and give this display; Export a timing reset signal and give this timer;
This voltage protection circuit has overvoltage crowbar and under-voltage protection circuit, avoids overvoltage and low-voltage damage with the protection external equipment;
This timer is set the power supply setting-up time of a main battery: Tsetm=(Cpm-Ck)/∑ Ai;
This timer is set the power supply setting-up time of a reserve battery: Tsetb=(Cpb-Ck)/∑ Ai;
Wherein, Cpm is the main battery nominal capacity;
Cpb is the reserve battery nominal capacity;
∑ Ai is the total amperage of external connection electrical apparatus;
Ck keeps vehicle to start minimum required electric weight once more 20 times;
Whether exist according to charging voltage, and whether the vehicle launch noise to judge whether vehicle start and whether charger normally export charging voltage, determines whether this main battery and this reserve battery charged greater than background noise;
When this main battery electric weight reaches the setting electric weight, stop this main battery electric weight output; Or
When this main battery power supply reaches this main battery power supply setting-up time Tsetm, stop this main battery electric weight output;
Whether vehicle launch noise characteristic and the Vehicular charging machine according to the electric current and voltage of this reserve battery, this main battery end normally exports charging voltage and current, whether this main battery stops power supply, judge whether vehicle shuts down and determine whether to stop this reserve battery charging is carried out managing electric quantity to this reserve battery;
When this reserve battery electric weight reaches the setting electric weight, stop this reserve battery electric weight output;
When this reserve battery power supply reaches this reserve battery power supply setting-up time Tsetb, stop this reserve battery electric weight output.
4. Vehicular battery electrical management device as claimed in claim 3 is characterized in that this reserve battery is installed on the vehicle.
5. Vehicular battery electrical management device as claimed in claim 3 is characterized in that, this display is by liquid crystal screen display battery electric power displaying controlled state.
6. a Vehicular battery electrical management device is characterized in that, it is parallel to, and to have with the battery be the main battery of vehicle powered, and described Vehicular battery electrical management device comprises reserve battery; One in order to protect the protective circuit of this device internal circuit and electric component; One is that the vehicle launch that vehicle powered starts or stops stops circuit for detecting in order to detecting with the battery; One electric current and voltage circuit for detecting in order to the electric current and voltage of detecting described main battery; One central processing unit; One voltage protection circuit in order to the protection external connection electrical apparatus; One in order to control the output control circuit that main battery or reserve battery are connected or cut off with external connection electrical apparatus; One in order to set the timer of above time of at least two groups; One single or multiple light-emitting diode display in order to the controlled state that shows main battery or reserve battery; One in order to send the buzzer of the single or multiple frequency sound; Wherein:
This protective circuit has short-circuit protection circuit and reverse polarity protection's circuit, avoids causing electric current excessive and oppositely cause damage because of electrode because of short circuit with protection Vehicular battery electrical management device internal circuit and electric component;
This central processing unit receives the voltage and the current values of electric current and voltage circuit for detecting output; Receive vehicle launch noise and background noise intrinsic numeric that vehicle launch stops circuit for detecting output; Described voltage and current values, described vehicle launch noise and background noise intrinsic numeric are analyzed, and received this timer signal, export a signal and give this output control circuit; Export a frequency signal and give this buzzer; Export a shows signal and give this display; Export a timing reset signal and give this timer;
This voltage protection circuit has overvoltage crowbar and under-voltage protection circuit, avoids overvoltage and low-voltage damage with the protection external equipment;
This timer is set the power supply setting-up time of a main battery: Tsetm=(Cpm-Ck)/∑ Ai;
This timer is set the power supply setting-up time of a reserve battery: Tsetb=(Cpb-Ck)/∑ Ai;
Wherein, Cpm is the main battery nominal capacity;
Cpb is the reserve battery nominal capacity;
∑ Ai is the total amperage of external connection electrical apparatus;
Ck keeps vehicle to start minimum required electric weight once more 20 times;
Whether exist according to charging voltage, and whether the vehicle launch noise to judge whether vehicle start and whether charger normally export charging voltage, determines whether this main battery and this reserve battery charged greater than background noise;
When this main battery electric weight reaches the setting electric weight, stop this main battery electric weight output; Or
When this main battery power supply reaches this main battery power supply setting-up time Tsetm, stop this main battery electric weight output;
Whether vehicle launch noise characteristic and the Vehicular charging machine according to the electric current and voltage of this reserve battery, this main battery end normally exports charging voltage and current, whether this main battery stops power supply, judge whether vehicle is shut down and whether stopped the charging of this reserve battery is carried out managing electric quantity to this reserve battery;
When this reserve battery electric weight reaches the setting electric weight, stop this reserve battery electric weight output;
When this reserve battery power supply reaches this reserve battery power supply setting-up time Tsetb, stop this reserve battery electric weight output.
7. Vehicular battery electrical management device as claimed in claim 6 is characterized in that this reserve battery is installed on the vehicle.
8. Vehicular battery electrical management device as claimed in claim 6 is characterized in that, this display is by liquid crystal screen display battery electric power displaying controlled state.
9. a Vehicular battery electrical management device is characterized in that, it is parallel on the main battery of the vehicle with engine engine device, and described Vehicular battery electrical management device comprises: a reserve battery; One in order to protect the protective circuit of this device internal circuit and electric component; One has the vehicle launch of engine engine device or the vehicle launch that stops stops circuit for detecting in order to detecting; One in order to the electric current and voltage circuit for detecting to main battery intercepting voltage-current characteristic; One central processing unit; Voltage protection circuit in order to the protection external connection electrical apparatus; One in order to control the output control circuit that battery is connected or cuts off with external connection electrical apparatus; One in order to set the timer of above time of at least two groups; One single or multiple light-emitting diode display in order to the controlled state that shows battery; One in order to send the buzzer of the single or multiple frequency sound; Wherein:
This protective circuit has short-circuit protection circuit and reverse polarity protection's circuit, avoids causing electric current excessive and oppositely cause damage because of electrode because of short circuit with protection battery power management device internal circuit of vehicle and electric component;
This central processing unit receives the voltage and the current values of this electric current and voltage circuit for detecting output; Receive the vehicle launch noise and the background noise intrinsic numeric of the output of car this startup stopping circuit for detecting; Input value is analyzed, and received this timer signal, export a signal and give this output control circuit; Export a frequency signal and give this buzzer; Export a shows signal and give this display; Export a timing reset signal and give this timer;
This voltage protection circuit has overvoltage crowbar and under-voltage protection circuit, avoids overvoltage and low-voltage damage with the protection external equipment;
This timer is set main battery power supply setting-up time Tsetm=(Cpm-Ck)/∑ Ai;
Wherein, Cpm is the nominal capacity of main battery;
∑ Ai is the total amperage of external connection electrical apparatus;
Ck keeps vehicle to start minimum required electric weight once more 20 times;
Whether this central processing unit exists according to charging voltage, and whether the vehicle launch noise to judge whether vehicle start and whether charger normally export charging voltage, determines whether this main battery or this reserve battery charged greater than background noise;
When this main battery reaches the setting electric weight, stop this main battery electric weight output; Or
When this main battery power supply reaches this main battery power supply setting-up time Tsetm, stop this main battery electric weight output;
According to vehicle launch noise characteristic and Vehicular charging machine whether normally export charging voltage and current, whether this main battery stops power supply; judge whether vehicle shuts down to determine whether stop this main battery or the charging of this reserve battery are carried out managing electric quantity to this reserve battery.
10. Vehicular battery electrical management device as claimed in claim 9 is characterized in that, this display is by liquid crystal screen display battery electric power displaying controlled state.
11. a Vehicular battery electrical management device is characterized in that, it is parallel to, and to have with the battery be a main battery of vehicle powered, and described Vehicular battery electrical management device comprises a reserve battery; Comprise one in order to protect the protective circuit of this device internal circuit and electric component; One is that the vehicle launch that vehicle powered starts or stops stops circuit for detecting in order to detecting with the battery; One in order to the electric current and voltage circuit for detecting to main battery intercepting voltage-current characteristic; One central processing unit; One voltage protection circuit in order to the protection external connection electrical apparatus; One in order to control the output control circuit that main battery is connected or cuts off with external connection electrical apparatus; One in order to set the timer of above time of at least two groups; One single or multiple light-emitting diode display in order to the controlled state that shows main battery; One in order to send the buzzer of the single or multiple frequency sound; Wherein:
This protective circuit has short-circuit protection circuit and reverse polarity protection's circuit, avoids causing electric current excessive and oppositely cause damage because of electrode because of short circuit with protection Vehicular battery electrical management device internal circuit and electric component;
This central processing unit receives the voltage and the current values of electric current and voltage circuit for detecting output; Receive vehicle launch noise and background noise intrinsic numeric that vehicle launch stops circuit for detecting output; Input value is analyzed, and received this timer signal, export a signal and give this output control circuit; Export a frequency signal and give this buzzer; Export a shows signal and give this display; Export a timing reset signal and give this timer;
This voltage protection circuit has overvoltage crowbar and under-voltage protection circuit, avoids overvoltage and low-voltage damage with the protection external equipment;
This timer is set power supply setting-up time Tsetm=(the Cpm-Ck)/∑ Ai of a main battery;
This timer is set the power supply setting-up time of a reserve battery: Tsetb=(Cpb-Ck)/∑ Ai;
Wherein, Cpm is the main battery nominal capacity;
Cpb is the reserve battery nominal capacity;
∑ Ai is the total amperage of external connection electrical apparatus;
Ck keeps vehicle to start minimum required electric weight once more 20 times;
Whether exist according to charging voltage, and whether the vehicle launch noise to judge whether vehicle start and whether charger normally export charging voltage, determines whether this main battery charged greater than background noise;
When this main battery electric weight reaches the setting electric weight, stop this main battery electric weight output; Or
When this main battery power supply reaches main battery power supply setting-up time Tsetm, stop this main battery electric weight output;
Whether vehicle launch noise characteristic and the Vehicular charging machine according to this main battery end normally exports charging voltage and current, whether this main battery stops power supply, and judges whether vehicle is shut down and whether stopped the charging of this reserve battery;
When this reserve battery electric weight reaches the setting electric weight, stop this reserve battery electric weight output; Or
When this reserve battery power supply reaches setting-up time Tsetb, stop this reserve battery electric weight output.
12. Vehicular battery electrical management device as claimed in claim 11 is characterized in that, this display is by liquid crystal screen display battery electric power displaying controlled state.
CN2005101146586A 2005-10-25 2005-10-25 Power control method of vehicle battery and its device CN1956287B (en)

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