CN101888114B - Multifunctional power supply of vehicular automotive electronic device - Google Patents

Multifunctional power supply of vehicular automotive electronic device Download PDF

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Publication number
CN101888114B
CN101888114B CN 201010229228 CN201010229228A CN101888114B CN 101888114 B CN101888114 B CN 101888114B CN 201010229228 CN201010229228 CN 201010229228 CN 201010229228 A CN201010229228 A CN 201010229228A CN 101888114 B CN101888114 B CN 101888114B
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China
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switch
storage battery
automotive electronic
controlled switch
vehicular automotive
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CN 201010229228
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Chinese (zh)
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CN101888114A (en
Inventor
朱光怀
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朱光怀
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Publication of CN101888114B publication Critical patent/CN101888114B/en

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Abstract

The invention relates to a multifunctional power supply of a vehicular automotive electronic device. The multifunctional power supply comprises a voltage detection module, a control module, controlled switches K1, K2 and K3, an auxiliary storage battery connected with the control module and a primary and auxiliary storage battery switch, wherein controlled ends of the controlled switches K1, K2 and K3 are connected with the control module, the first end of switch ends of the controlled switch K1 is connected with the anode of an automotive storage battery, the first end of switch ends of the controlled switch K2 is connected with the anode of the auxiliary storage battery, the first end of switch ends of the controlled switch K3 is connected to a power supply control end of the vehicular automotive electronic device, second ends of switch ends of the controlled switches K1, K2 and K3 are connected together, the auxiliary storage battery is connected with the vehicular automotive electronic device and the automotive storage battery in parallel through the controlled switch K2, one end of input ends of the voltage detection module is connected with an automotive electric switch, the other end thereof is connected between the controlled switch K2 and a power supply end, and the output end of the voltage detection device is connected with the control module. The invention realizes that the vehicular automotive electronic device is not power off in the automotive ignition process and can effectively protect the automotive storage device and the vehicular automotive electronic device.

Description

The multifunctional power of vehicular automotive electronic device
[technical field]
The invention relates to a kind of power-supply device, refer to especially a kind of multifunctional power of vehicular automotive electronic device.
[background technology]
Vehicular automotive electronic device (comprising vehicle information system (car running computer), navigation system, automobile audio and tv entertainment system, Vehicular communication system, equipment for surfing the net, vehicle-mounted computer etc.) is more and more universal at present, some has memory function, see also shown in Fig. 1-1, its power supply is supplied with by " power end (being commonly designated as BTT+) " and " power control terminal (being commonly designated as ACC) " by automobile storage battery or generator.When this vehicular automotive electronic device is vehicle audio, this " power end " and " power control terminal " refers to " power end " and " power control terminal " of vehicle audio, when this vehicular automotive electronic device makes other equipment, " power end " and " power control terminal " that refers to corresponding device, wherein " power end " directly is connected with the positive pole of automobile storage battery, the memory power supply of vehicular automotive electronic device is provided when electric switch cuts out, the working power of vehicular automotive electronic device is provided when electric switch is opened." power control terminal " is to be connected by automobile electric switch and automobile storage battery are anodal, and when electric switch was opened, power control terminal obtained opening the vehicular automotive electronic device power supply behind the voltage signal.The memoryless function of some vehicular automotive electronic device, see also shown in Fig. 1-2, its power supply is supplied with by the automobile electric switch by automobile storage battery or generator, namely only has power control terminal, and the operating current of this vehicular automotive electronic device is through automobile electric switch and power control terminal at this moment.Existing part vehicular automotive electronic device self has the audio-visual timing closing function that waits of when parking appreciation, prevents the storage battery over-discharge can, the protection storage battery.
There is following shortcoming in existing vehicular automotive electronic device supply power mode: 1, at present vehicular automotive electronic device by power line and (or) power control line is attempted by on the automobile storage battery, and automobile storage battery and generator, starter also are and connect relation.When automobile was struck sparks, because the existence of starter very large and automobile storage battery internal resistance of electric current when starting, the rapid drawdown of automobile storage battery terminal voltage caused vehicular automotive electronic device to cross low outage because of supply voltage or close because of the power control terminal brownout; 2, vehicular automotive electronic device uses the automobile storage battery electric energy when generator is not worked; the closing function in limited time that existing part vehicular automotive electronic device carries is at automobile storage battery in the situation of deficient electricity; vehicular automotive electronic device can work in the time in limited time; finish in limited time to open again electric switch No. one time by closing behind the autoshutdown; vehicular automotive electronic device still can be opened, and can not effectively protect storage battery.
[summary of the invention]
Technical problem to be solved by this invention is to provide a kind of automobile when sparking vehicular automotive electronic device of can realizing not cut off the power supply, do not restart, and can effectively protect the multifunctional power of storage battery and vehicular automotive electronic device.
The present invention solves the problems of the technologies described above by the following technical programs: a kind of multifunctional power of vehicular automotive electronic device, comprise voltage detection module, control module, controlled switch K1, controlled switch K2, controlled switch K3, auxiliary storage battery, main, auxiliary storage battery diverter switch, described voltage detection module, main, auxiliary storage battery diverter switch, and warning device all is connected to control module, controlled switch K1, controlled switch K2, the controlled end of controlled switch K3 is connected to control module, the switch terminals first end of described controlled switch K1 connects the positive pole of automobile storage battery, the switch terminals first end of described controlled switch K2 is connected to the positive pole of auxiliary storage battery, the switch terminals first end of described controlled switch K3 is connected to the power control terminal of vehicular automotive electronic device, described controlled switch K1, K2, switch terminals the second end of K3 links together, the negative pole of described auxiliary storage battery is connected with the negative pole of automobile storage battery and the negative pole of vehicular automotive electronic device respectively, input one end of described voltage detection module is connected to the automobile electric switch, the other end is connected to switch terminals the second end of controlled switch K2, and output is connected to control module.
For the vehicular automotive electronic device with memory function, vehicular automotive electronic device also has a power end, at this moment, switch terminals the second end of described controlled switch K1, K2, K3 is connected to the power end of vehicular automotive electronic device, and the memory power supply of vehicular automotive electronic device is provided.
For the vehicular automotive electronic device that does not have memory function, the structure of the multifunctional power of this vehicular automotive electronic device is constant, but with automobile storage battery, automobile electric switch and vehicular automotive electronic device connected mode also can be in the following way, described voltage detection module, main, auxiliary storage battery diverter switch, and warning device all is connected to control module, controlled switch K1, controlled switch K2, the controlled end of controlled switch K3 is connected to control module, the first end of switch terminals the first termination automobile electric door of described controlled switch K1, the positive pole of the second termination automobile storage battery of automobile electric switch, the switch terminals first end of described controlled switch K2 is connected to the positive pole of auxiliary storage battery, the switch terminals first end of described controlled switch K3 is connected to the power control terminal of vehicular automotive electronic device, described controlled switch K1, K2, switch terminals the second end of K3 links together, the negative pole of described auxiliary storage battery is connected with the negative pole of automobile storage battery and the negative pole of vehicular automotive electronic device respectively, input one end of described voltage detection module is connected to the first end of automobile electric switch, the other end is connected to switch terminals the second end of controlled switch K2, and output is connected to control module.The switch terminals first end that is controlled switch K1 directly is not connected on the automobile storage battery, but has been connected on the automobile storage battery by the automobile electric switch.
The multifunctional power of described vehicular automotive electronic device also comprises warning device, described warning device is connected on the control module, when voltage detection module detects the automobile storage battery terminal voltage less than the warning value of setting, when perhaps surpassing storage battery charging pressure limiting (overvoltage), and auxiliary storage battery voltage drop is during to the battery cell discharge cut-ff voltage, control module control alarm activation.
Described voltage detection module, control module and controlled switch K1, K2, K3 are partly or entirely integrated or be scattered in the power control circuit of vehicular automotive electronic device or in the vehicular automotive electronic device.
The advantage of the multifunctional power of vehicular automotive electronic device of the present invention is: can realize that 1, vehicular automotive electronic device does not cut off the power supply, do not restart when automobile is struck sparks, avoid vehicular automotive electronic device often to restart and prolong its useful life.2, detect the minimum electric current that voltage uses because the automobile electric door contact only provides, can prolong electric switch useful life.3, timely monitor automobile storage battery terminal voltage; when the automobile storage battery terminal voltage no matter which kind of reason be lower than warning value or generator output voltage when too high; and auxiliary storage battery is as main power source; close the vehicular automotive electronic device power supply when assisting the storage battery voltage drop to the battery cell discharge cut-ff voltage; before recovering normally, the storage battery terminal voltage can't reopen vehicular automotive electronic device; effectively the protection automobile storage battery reaches auxiliary storage battery, prolongs the useful life of vehicular automotive electronic device.4, pass through sound, light, literal or language form to the over voltage status alert, in time reminding user.
[description of drawings]
The invention will be further described in conjunction with the embodiments with reference to the accompanying drawings.
Fig. 1-1 and Fig. 1-2 are the power supply the principle block diagrams of existing vehicular automotive electronic device, and wherein Fig. 1-1 is the power supply the principle block diagram that the vehicular automotive electronic device of memory function is arranged, and Fig. 1-2 is the power supply the principle block diagram of the vehicular automotive electronic device of memoryless function.
Fig. 2-1 is to Fig. 2-the 3rd, the theory diagram of the multifunctional power of vehicular automotive electronic device of the present invention.Wherein Fig. 2-1 is the theory diagram of multifunctional power of vehicular automotive electronic device that memory function is arranged, Fig. 2-2 is the theory diagram of multifunctional power of the vehicular automotive electronic device of memoryless function, and Fig. 2-3 is the theory diagram of multifunctional power of the vehicular automotive electronic device of another kind of memoryless function.
[embodiment]
See also Fig. 2-1, the multifunctional power of vehicular automotive electronic device of the present invention comprises voltage detection module, control module, controlled switch K1, controlled switch K2, controlled switch K3, auxiliary storage battery, main and auxiliary storage battery diverter switch, and warning device.
Described voltage detection module, main and auxiliary storage battery diverter switch, and warning device all is connected to control module, the controlled end of controlled switch K1, controlled switch K2, controlled switch K3 is connected to control module, the switch terminals first end of described controlled switch K1 connects the positive pole of automobile storage battery, the switch terminals first end of described controlled switch K2 is connected to the positive pole of auxiliary storage battery, the switch terminals first end of described controlled switch K3 is connected to the power control terminal of vehicular automotive electronic device, and switch terminals the second end of described controlled switch K1, K2, K3 links together.Described auxiliary storage battery is by controlled switch K2 and vehicular automotive electronic device, automobile storage battery and connect, input one end of described voltage detection module is connected to the automobile electric switch, the other end is connected between controlled switch K2 and the power end, output is connected to control module, keeps existing between the generator (not shown) of automobile, starter (not shown) and the automobile storage battery and connects relation.
The function of each part is as described below:
Described voltage detection module detects automobile storage battery and auxiliary storage battery terminal voltage by automobile electric switch and controlled switch K2, and exports to control module and process.
Described control module is set respectively threshold values to automobile storage battery and auxiliary storage battery terminal voltage: 1, the automobile storage battery terminal voltage is set three threshold voltage V1, V2, V3, V1 is less than V2, and V2 is less than V3.Magnitude of voltage when wherein V1 is automobile storage battery electric weight warning value (when being 90% such as electric weight corresponding magnitude of voltage).Whether V2 magnitude of voltage during a little more than the storage battery Full Charge Capacity works in order to the generator (not shown) that detects automobile, and V3 is the highest voltage limiting value of automobile storage battery charging (such as 25 degrees centigrade of maintenance-free lead-acid battery time be 14.4V).2, auxiliary storage battery terminal voltage is set a threshold values V4, V4 is auxiliary storage battery discharge cut-off voltage value (such as 25 degrees centigrade of maintenance-free lead-acid batteries time be 10.5V).Control module compares with the setting threshold values according to the magnitude of voltage of voltage detection module input, export respectively the operating state of control signal control controlled switch K1, K2, K3 and warning device, control module is used discrete electronic control circuit, integrated electronic control circuit or single-chip microcomputer.
Switching between described controlled switch K1 control automobile storage battery and the vehicular automotive electronic device.Controlled switch K1 uses relay or electronic switch.
The connecting and disconnecting of the auxiliary storage battery of described controlled switch K2 control.Controlled switch K2 uses relay or electronic switch.
Controlled switch K3 provides " virtual " electric switch open and close signal or working power to power control terminal.Controlled switch K3 uses relay or electronic switch.
Described auxiliary storage battery is by controlled switch K2 and vehicle audio, automobile storage battery and connect, the working power of the multifunctional power of vehicular automotive electronic device and this vehicular automotive electronic device is provided when controlled switch K1 disconnects, and generator is given auxiliary storage battery charging by controlled switch K1, K2 when controlled switch K1 conducting.Auxiliary storage battery uses the storage battery consistent with the automobile storage battery type, need increase other charging circuit to protect auxiliary storage battery when selecting inconsistent type storage battery.
Described main and auxiliary storage battery diverter switch is switched the vehicle audio main power source between automobile storage battery and auxiliary storage battery.Use mechanical switch or electronic switch.
The type of alarms such as warning device use sound, light, language, literal are indicated storage battery terminal voltage state and are reported to the police.
The operation principle of the multifunctional power of this vehicular automotive electronic device is as described below:
When one, using automobile storage battery as the vehicular automotive electronic device main power source:
1, when voltage detection module detects the automobile storage battery terminal voltage less than V1, control module control controlled switch K1 disconnects, and automobile storage battery is not powered to vehicular automotive electronic device; Control module control controlled switch K2 conducting, the auxiliary electrical bottle graft is logical, and the working power of the multifunctional power of vehicular automotive electronic device memory power supply and this vehicular automotive electronic device is provided by auxiliary storage battery; Control module control controlled switch K3 disconnects, and vehicular automotive electronic device can't detect the electric switch start signal and can not open; Alarm activation.
2, detect the automobile storage battery terminal voltage more than or equal to V1 during less than V2 when voltage detection module, control module control controlled switch K 1 keeps conducting; Control module control controlled switch K2 remains open, and prevents that voltage differences interacts between automobile storage battery and the auxiliary storage battery; Control module control controlled switch K3 conducting, vehicular automotive electronic device obtains the electric switch start signal and can open; Warning device does not start.
3, detect the automobile storage battery terminal voltage more than or equal to V2 during less than V3 when voltage detection module, this moment, generator was normal operating conditions, and control module control controlled switch K1 keeps conducting; Controlled switch K2 conducting, generator is given auxiliary storage battery charging by controlled switch K1, K2; Controlled switch K3 conducting, vehicular automotive electronic device obtain the electric switch start signal and can open.
When 4, automobile is struck sparks in the unlatching situation such as vehicular automotive electronic device, the automobile storage battery terminal voltage is by the moment that goes to more than or equal to V1 less than V1, control module control controlled switch K1 disconnects, and prevents that auxiliary storage battery electric current from pouring in down a chimney the starter (not shown) into automobile; Controlled switch K2 conducting, the working power of the multifunctional power of vehicular automotive electronic device and this vehicular automotive electronic device is provided by auxiliary storage battery, guarantees that vehicular automotive electronic device does not cut off the power supply during the automobile sparking; Control module control controlled switch K3 during striking sparks in the maintenance conducting, vehicular automotive electronic device still can detect the electric switch start signal and be held open state.
5, when closing electric switch, voltage detection module detects electric switch and closes (voltage is 0), outputs signal to control module, thereby vehicular automotive electronic device is closed in time disconnection of control module control controlled switch K3.For preventing causing vehicular automotive electronic device outage because user behind the vehicle accident extinguishing strikes sparks to miss electric switch cuts out to open again again, can set electric switch and close rear controlled switch K3 time-delay and disconnect.
6, when detecting because of faults such as generator, voltage regulators, voltage detection module cause output voltage too high; be that the automobile storage battery terminal voltage is during more than or equal to V3; control module control controlled switch K 1 disconnects; controlled switch K2 conducting; controlled switch K3 disconnects; alarm activation is realized overvoltage protection and warning function.
When two, using auxiliary storage battery as the vehicular automotive electronic device main power source:
Control module control controlled switch K1 only in the automobile storage battery terminal voltage more than or equal to V2 less than V3, conducting when namely generator is working properly, controlled switch K2 is in conducting state all the time, generator is to the vehicular automotive electronic device power supply and to auxiliary storage battery charging.Controlled switch K3 conducting with the electric switch open and close, disconnection, only when auxiliary storage battery terminal voltage drops to discharge cut-off voltage V4, control module control K3 disconnects, and closes vehicular automotive electronic device and reports to the police, and prevents auxiliary storage battery overdischarge and damages.The power supply of vehicular automotive electronic device is supplied with by generator and auxiliary storage battery, not affected by the automobile storage battery voltage status, does not cut off the power supply when realizing the vehicular automotive electronic device sparking, does not use the energy of automobile storage battery, at utmost protects automobile storage battery.Warning device is constant to the indication of automobile storage battery terminal voltage, controlled way, still realizes indication, warning to automobile storage battery terminal voltage state.
For the vehicular automotive electronic device that does not have memory function, this multifunctional power is applicable equally, sees also shown in Fig. 2-2 and Fig. 2-3, and the structure of the multifunctional power of this vehicular automotive electronic device is constant, and the specific works principle is also basic identical, repeats no more.Because such device only has power control terminal, power supply is controlled switching by electric switch, and the electric current of the electric switch contact of flowing through is larger, when using the multifunctional power of this vehicular automotive electronic device, detect the minimum electric current that voltage uses because the electric switch contact only provides, can prolong the useful life of electric switch.
Because this device can detect the automobile storage battery terminal voltage in good time, autoshutdown vehicular automotive electronic device power supply and reporting to the police when the storage battery terminal voltage is lower than warning value is effectively protected automobile storage battery, can avoid the storage battery over-discharge to cause deficient electricity and situation about can not strike sparks.The automobile storage battery that the automobile line fault is caused does not charge or storage battery will lose efficacy all warning function.Autoshutdown vehicle audio power supply and reporting to the police when generator or voltage regulator fault cause output voltage too high prevents that overvoltage from burning vehicular automotive electronic device, and the reminding user overtension, prevents the long-term overvoltage charging of automobile storage battery and shortens the life-span.Avoid the vehicular automotive electronic device power-off restarting during each automobile sparking, effectively prolong the useful life of vehicular automotive electronic device.Simultaneously auxiliary storage battery also had protection and warning function.

Claims (9)

1. the multifunctional power of a vehicular automotive electronic device, it is characterized in that: comprise voltage detection module, control module, controlled switch K1, controlled switch K2, controlled switch K3, auxiliary storage battery, major-minor storage battery diverter switch, warning device, automobile storage battery, and automobile electric switch, described automobile storage battery is as main storage battery, described voltage detection module, major-minor storage battery diverter switch, and warning device all is connected to control module, controlled switch K1, controlled switch K2, the controlled end of controlled switch K3 is connected to control module, the switch terminals first end of described controlled switch K1 connects the positive pole of automobile storage battery, the switch terminals first end of described controlled switch K2 is connected to the positive pole of auxiliary storage battery, the switch terminals first end of described controlled switch K3 is connected to the power control terminal of vehicular automotive electronic device, described controlled switch K1, K2, switch terminals the second end of K3 links together, the negative pole of described auxiliary storage battery is connected with the negative pole of automobile storage battery and the negative pole of vehicular automotive electronic device respectively, input one end of described voltage detection module is connected to the first end of automobile electric switch, the other end is connected to switch terminals the second end of controlled switch K2, output is connected to control module, the positive pole of the second termination automobile storage battery of described automobile electric switch.
2. the multifunctional power of vehicular automotive electronic device as claimed in claim 1, it is characterized in that: switch terminals the second end of described controlled switch K1, K2, K3 is connected to the power end of vehicular automotive electronic device.
3. the multifunctional power of vehicular automotive electronic device as claimed in claim 1 or 2, it is characterized in that: described control module is used discrete electronic control circuit, integrated electronic control circuit.
4. the multifunctional power of vehicular automotive electronic device as claimed in claim 1 or 2 is characterized in that: described controlled switch K1 use relay or electronic switch.
5. the multifunctional power of vehicular automotive electronic device as claimed in claim 1 or 2 is characterized in that: controlled switch K2 use relay or electronic switch.
6. the multifunctional power of vehicular automotive electronic device as claimed in claim 1 or 2 is characterized in that: controlled switch K3 use relay or electronic switch.
7. the multifunctional power of vehicular automotive electronic device as claimed in claim 1 or 2 is characterized in that: described major-minor storage battery diverter switch use mechanical switch or electronic switch.
8. the multifunctional power of vehicular automotive electronic device as claimed in claim 1 or 2 is characterized in that: described voltage detection module, control module and controlled switch K1, K2, K3 is partly or entirely integrated or be scattered in the power control circuit of vehicular automotive electronic device or in the vehicular automotive electronic device.
9. the multifunctional power of a vehicular automotive electronic device, it is characterized in that: comprise voltage detection module, control module, controlled switch K1, controlled switch K2, controlled switch K3, auxiliary storage battery, major-minor storage battery diverter switch, warning device, automobile storage battery, and automobile electric switch, described automobile storage battery is as main storage battery, described voltage detection module, major-minor storage battery diverter switch, and warning device all is connected to control module, controlled switch K1, controlled switch K2, the controlled end of controlled switch K3 is connected to control module, the first end of switch terminals the first termination automobile electric door of described controlled switch K1, the positive pole of the second termination automobile storage battery of automobile electric switch, the switch terminals first end of described controlled switch K2 is connected to the positive pole of auxiliary storage battery, the switch terminals first end of described controlled switch K3 is connected to the power control terminal of vehicular automotive electronic device, described controlled switch K1, K2, switch terminals the second end of K3 links together, the negative pole of described auxiliary storage battery is connected with the negative pole of automobile storage battery and the negative pole of vehicular automotive electronic device respectively, input one end of described voltage detection module is connected to the first end of automobile electric switch, the other end is connected to switch terminals the second end of controlled switch K2, and output is connected to control module.
CN 201010229228 2010-07-14 2010-07-14 Multifunctional power supply of vehicular automotive electronic device CN101888114B (en)

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CN102355046B (en) * 2011-09-09 2014-10-29 Tcl新技术(惠州)有限公司 Voltage detection and power failure protection device and implementation method
KR101360705B1 (en) * 2011-09-22 2014-02-07 기아자동차주식회사 Vehicle Upgrade System and Method thereof
TWI472447B (en) * 2011-12-06 2015-02-11
CN102437554B (en) * 2011-12-29 2017-06-16 厦门雅迅网络股份有限公司 A kind of storage battery guard method of mobile unit and its circuit
CN202399925U (en) * 2012-01-12 2012-08-29 朱光怀 Intelligent protective device for faults of automobile circuit
CN103386934B (en) * 2012-05-10 2016-04-06 航天信息股份有限公司 The electric supply installation of vehicle electronic device and method
CN106558872A (en) * 2015-09-25 2017-04-05 江苏威能汽车工业发展有限公司 A kind of automobile storage battery low-voltage variation system
CN107203000A (en) * 2017-06-16 2017-09-26 惠州市德赛西威汽车电子股份有限公司 A kind of vehicle location method for tracing and system
CN109842201A (en) * 2017-11-27 2019-06-04 深圳市海洋王照明工程有限公司 A kind of switching circuit and device of vehicle power supply
CN109910797B (en) * 2019-03-07 2020-12-29 深圳市电将军科技有限公司 Emergency intelligent storage battery wire clamp for one-key starting automobile and automobile starting and lighting method

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