CN201769738U

CN201769738U - Automobile audio system

Info

Publication number: CN201769738U
Application number: CN2010202487300U
Authority: CN
Inventors: 姚建明; 李书福; 杨健; 潘巨林
Original assignee: Zhejiang Geely Holding Group Co Ltd; Zhejiang Haoqing Automobile Manufacturing Co Ltd
Current assignee: Zhejiang Geely Holding Group Co Ltd; Zhejiang Haoqing Automobile Manufacturing Co Ltd
Priority date: 2010-07-06
Filing date: 2010-07-06
Publication date: 2011-03-23
Anticipated expiration: 2020-07-06

Abstract

The utility model relates to the technical field of automobile electronics, in particular to an automobile audio system with an automatically switchable vehicular audio power source. The provided automobile audio system with the vehicular audio power source capable of automatically switching during start of an automobile solves the technical problems that existing vehicular audios have power failures during start of automobiles and are inaccurate in clocks, and comprises a vehicular audio, a storage battery, an ignition switch and a power supply conversion control module, wherein the ignition switch includes a START stage, an ACC stage and an ON stage, the storage battery is connected with the ignition switch, an input end of the power supply conversion control module is respectively connected with the storage battery, the START stage, the ACC stage and the ON stage, the power supply conversion control module includes two output ends, one output end is connected to an input end of a working power source of the vehicular audio, and the other output end is connected to a clock power source output end of the vehicular audio.

Description

Car audio system

Technical field

The utility model relates to technical field of automotive electronics, in particular, relate to that a kind of vehicle audio power supply can automatically switch car audio system.

Background technology

Present most vehicle audio, all be to power to it, but the ACC shelves of ignition lock do not have voltage output when ignition start, so in several seconds of starting by the ACC shelves of ignition lock, vehicle audio can quit work because of the outage of ACC shelves, can cause harmful effect to the user; Also have to be exactly when storage battery is in power shortage critical, can to become very low at the moment battery tension of starting, the clock in the vehicle audio can quit work several seconds because of clock work voltage step-down, the drawback that can cause the vehicle audio clock to be forbidden like this.The application number that Chinese patent property right office is announced be 200710067108 the name be called OnePlant novel sound system utility model patent, it is to use storage battery to be connected with the vehicle audio power input, and this connection mode is in automobile starting, and battery tension can reduce, and this will cause the clock of vehicle audio inaccurate.

The utility model content

The car audio system that the utility model provides a kind of vehicle audio power supply can automatically switch in automobile starting, having solved present vehicle audio can cut off the power supply in the time of automobile starting, the technical matters that the vehicle audio clock is inaccurate.

Above-mentioned technical matters is achieved by following technical proposals: a kind of car audio system, comprise vehicle audio 13, storage battery 17, ignition lock 12 and power supply conversion and control module 11, described ignition lock 12 comprises START shelves 14, ACC shelves 15 and ON shelves 16, described storage battery 17 is connected with ignition lock 12, described power supply conversion and control module 11 input ends respectively with storage battery 17, START shelves 14, ACC shelves 15 are connected with ON shelves 16, described power supply conversion and control module 11 comprises two mouths, a mouth is connected to vehicle audio working power input end 21, and another mouth is connected to vehicle audio clock power input end 22.

Under normal circumstances, power supply conversion and control module is connected ACC shelves 15 to the connection between the vehicle audio working power input end 21, when ignition lock switches to START shelves 14 and begins to start, power supply conversion and control module 11 is connected ON shelves 16 to the connection between the vehicle audio working power input end 21, after automobile starting finishes, power supply conversion and control module disconnects ON shelves 16 to 21 connection between the vehicle audio working power input end, connects ACC shelves 15 to the connection between the vehicle audio working power input end 21.When storage battery 17 voltages just often, power supply conversion and control module 11 is connected storage battery 17 to the connection between the vehicle audio clock power input end 22, in automobile starting, when storage battery 17 voltages descend, power supply conversion and control module 11 will provide power supply to vehicle audio clock power input end 22, and time-delay a period of time, when storage battery 17 voltages are normal, connect storage battery 17 again to the connection between the vehicle audio clock power input end 22.

As preferably, power supply conversion and control module 11 comprises micro controller system 1, first relay 2, second relay 3 and electric capacity 4, first mouth 9 of micro controller system links to each other with first relay 2, second mouth 10 links to each other with second relay 3, electric capacity 4 links to each other with the open contact of first relay 2, another termination first mouth 31 of this open contact, the normally closed contact one termination battery tension input end 8 of first relay 2, another termination first mouth 31, another normally closed contact one end of first relay 2 is connected to battery tension input end 8, the other end is connected to electric capacity 4, micro controller system 1 comprises first input end 5, second input end 6 and the 3rd input end 7, normally closed contact one end of the first input end 5 and second relay 3 links to each other, the other end of the normally closed contact of second relay 3 is connected to second mouth 32, one end of the open contact of second input end 6 and second relay 3 links to each other, and the other end of the open contact of second relay 3 is connected to second mouth 32.First mouth 31 is connected to vehicle audio clock power input end 22, second mouth 32 is connected to vehicle audio working power input end 21, vehicle audio clock power end input end 22 is to power to the clock in the vehicle audio, vehicle audio working power input end 21 is to play the music power supply to vehicle audio, micro controller system 1 first input end 5 receives ACC shelves 15 signals, second input end, 6 reception ON shelves 16 signals and the 3rd input end 7 are accepted the signal of START shelves 14, under normal circumstances, 1 two mouths of micro controller system all are low level, first relay 2 and second relay 3 all are failure to actuate, first mouth 31 and second mouth 32 are connected with storage battery and ACC shelves 15 respectively, so this moment, storage battery 17 and vehicle audio clock power 22 input ends were connected, ACC shelves 15 and vehicle audio working power input end 21 are connected, after micro controller system 1 receives START shelves 14 signals, and when receiving ACC shelves 15 signal voltages and be zero, first mouth 9 of micro controller system 1 is a high level, 2 actions of first relay, at this moment, the electric capacity 4 and first mouth 31 are communicated with, electric capacity 4 gives vehicle audio clock power input end 22 power supplies through first mouth 31, because the voltage of electric capacity 4 is the normal voltage of storage battery, so can guarantee the vehicle audio clock can not work because storage battery 17 voltages descend when starting, second mouth 10 of micro controller system 1 is a high level, 3 actions of second relay, this moment, ON shelves 16 were communicated with second mouth 32, guaranteed that vehicle audio working power input end 21 can not cut off the power supply when starting, after postponing 15 seconds, first mouth 9 and second mouth 10 recover low level again, first relay 2 and second relay 3 stop action, have recovered power supply mode under the normal circumstances again.

As preferably, also be connected in series with first wire fuse 19 between ACC shelves 15 and the supply module input end, also be connected in series with second wire fuse 20 between described ON shelves 16 and the supply module input end, also be connected in series with the 3rd wire fuse 18 between described storage battery and the supply module input end.Wire fuse can disconnect when line short circuit current is excessive, prevents that excessive electric current from damaging storage battery.

Owing to adopted technique scheme, the utlity model has following advantage: vehicle audio also has power supply to supply with in automobile starting, and the vehicle audio clock does not have the drawback of the timing uncertainty that quits work and cause in automobile starting.

Description of drawings

Fig. 1 is the schematic diagram of the automobile mounted sound system of the utility model embodiment.

Fig. 2 is a kind of power supply conversion and control modular circuit schematic diagram of the utility model embodiment.

The specific embodiment

The utility model is described in further detail below in conjunction with the drawings and specific embodiments: as shown in Figure 1, the automobile mounted sound system of present embodiment comprises storage battery 17, its positive pole is connected to the input end of ignition lock 12, the ACC shelves 15 of ignition lock 12 and ON shelves 16 are connected to the input end of power supply conversion and control module 11 respectively by first wire fuse 19 and second wire fuse 20, the START shelves 14 of ignition lock 12 are directly connected to the input end of power supply conversion and control module 11, the mouth of power supply conversion and control module 11 provides vehicle audio working power input end 21 and the vehicle audio clock power input end 22 of power supply to vehicle audio 13, and the positive pole of storage battery 17 also is connected to the input end of power supply conversion and control module 11 by the 3rd wire fuse 18.The voltage of the storage battery 17 of present embodiment is 5V, when the automobile normal operation, power supply conversion and control module 11 is connected the working power input end 21 of ACC shelves 15 to vehicle audio 13, the positive pole that power supply conversion and control module 11 is connected storage battery is connected to the clock power input end 22 of vehicle audio 13, when ignition lock 12 switches to START shelves 14, power supply conversion and control module 11 is connected the vehicle audio working power input end 21 of the ON shelves 16 of ignition lock 12 to vehicle audio 13, power supply conversion and control module 11 provides 5V voltage to vehicle audio clock power input end 22 simultaneously, and the ground terminal 23 of vehicle audio is connected to the negative pole of storage battery 17 by earth point.

Fig. 2 is the power supply conversion and control modular circuit schematic diagram of present embodiment, as shown in the figure, power supply conversion and control module comprises micro controller system 1, first relay 2, second relay 3 and electric capacity 4, first mouth 9 of micro controller system 1 links to each other with first relay 2, second mouth 10 links to each other with second relay 3, electric capacity 4 links to each other with open contact one end of first relay 2, another termination first mouth 31 of the open contact of first relay 2, the a normally closed contact one termination battery tension input end 8 of first relay 2, another termination first mouth 31, another normally closed contact one end of first relay 2 is connected to battery tension input end 8, the other end is connected to electric capacity 4, micro controller system 1 comprises first input end 5, second input end 6 and the 3rd input end 7, first input end 5 links to each other with normally closed contact one end of second relay 3, the normally closed contact other end of second relay 3 is connected to second mouth 32, second input end 6 links to each other with open contact one end of second relay 3, the open contact other end of second relay 3 is connected to second mouth 32, and battery tension input end 8 is connected to the positive pole of storage battery.

Following surface analysis present embodiment is how to solve the inaccurate technical matters of vehicle audio clock: under normal circumstances, storage battery 17 cathode voltages are connected to first mouth 31 by a normally closed contact of first relay 2, first mouth 31 is connected to vehicle audio clock power input end 22, storage battery 17 cathode voltages are connected to electric capacity 4 by another normally closed contact of first relay 2, give electric capacity 4 chargings, when ignition lock 12 switches to START shelves 14 and begins to start automobile, this moment, the voltage of storage battery 17 can drop under the 5V, if still this voltage is delivered to vehicle audio clock power input end 22, the vehicle audio clock might not worked so, this will cause clock inaccurate, when ignition lock 12 switches to START shelves 14 and begins to start automobile, after the 3rd input end 7 of micro controller system 1 receives the signal that ignition lock START shelves 14 send over, at first mouth, 9 output high level, drive 2 work of first relay, this moment first relay 2 the open contact closure, the positive pole of electric capacity 4 is connected to first mouth 31, this moment, electric capacity 4 provided 5V voltage to vehicle audio clock power input end 22, because the normally closed contact of first relay 2 disconnects, so disconnection that is connected of the positive pole of storage battery 8 and clock power input end 22, postpone after 15 seconds, automobile starting finishes, the voltage of storage battery also returns to normal voltage 5V, this moment micro controller system 1 first mouth, 9 output low levels, stop the work of first relay 9, this moment, the open contact of first relay 9 disconnected, the normally closed contact closure, the clock power input end is connected by a normally closed contact of first relay 2 with the positive pole of storage battery 17 again, and the positive pole of storage battery 17 is connected by another normally closed contact and electric capacity 4, begin to electric capacity 4 chargings, vehicle audio clock power input end 22 all maintains the input of 5V voltage always as can be seen from above, so the vehicle audio clock can be because of quitting work, and the phenomenon of the timing uncertainty that causes

Following surface analysis present embodiment is how to solve the technical matters that vehicle audio can cut off the power supply when automobile starting: the first input end 5 of micro controller system 1 connects ACC shelves 15, second input end 6 connects ON shelves 16, the 3rd input end 7 connects START shelves 14, under normal operation, the ACC shelves 15 of ignition lock 12 have voltage, the voltage that ACC shelves 15 provide is connected to second mouth 32 by the normally closed contact of second relay 3, second mouth 32 links to each other with the working power input end 21 of vehicle audio again, when ignition lock 12 switches to START shelves 14 and begins to start, ACC shelves 15 do not have voltage at this moment, ON shelves 16 have voltage, the voltage that micro controller system 1 receives first input end 5 is zero, the voltage of second input end 6 is 5V, the voltage of the 3rd input end 7 is 5V, this moment, second mouth 10 of micro controller system was exported high level, drive 3 work of second relay, this moment second relay 3 the open contact closure, normally closed contact is opened, the disconnection that is connected of ACC shelves 15 and second mouth 32, and the ON shelves 16 and second mouth 32 are connected by the open contact of second relay 3, this moment, vehicle audio working power input end 21 was connected with ON shelves 16, because ON shelves 16 have voltage in automobile starting, so just guaranteed that vehicle audio can also keep normal operation in automobile starting.After automobile starting finishes, receiving after first input end 5 has 5V voltage of micro controller system 1, second mouth, 10 output low levels of micro controller system 1, stop the work of second relay 3, the open contact of second relay 3 disconnects, the open contact closure, at this moment the 5V voltage that is provided by ACC shelves 15 arrives second mouth 32 by the normally closed contact of second relay, this 5V voltage arrives vehicle audio working power input end 21 by second mouth 32 again, from top narration as can be known, vehicle audio working power input end 21 can not cut off the power supply in automobile starting yet.

In the present embodiment, the effect of first wire fuse 19, second wire fuse 20 and the 3rd wire fuse 18 is: when vehicle audio 13 and the line failure of powering conversion and control module 11 and powering to vehicle audio, when causing electric current in the supply line excessive, the energy open-circuit line, preventing that electric current is excessive causes the excessive contingent disaster hidden-trouble of electric wire temperature, and the discharge of storage battery 17 super-high-currents causes the damage of storage battery 17.

Claims

1. car audio system, comprise vehicle audio (13), storage battery (17) and ignition lock (12), described ignition lock (12) comprises START shelves (14), ACC shelves (15) and ON shelves (16), described storage battery (17) is connected with ignition lock (12), it is characterized in that: also comprise power supply conversion and control module (11), described power supply conversion and control module (11) input end respectively with storage battery (17), START shelves (14), ACC shelves (15) are connected with ON shelves (16), described power supply conversion and control module (11) comprises two mouths, a mouth is connected to vehicle audio working power input end (21), and another mouth is connected to vehicle audio clock power input end (22).

2. car audio system according to claim 1, it is characterized in that: described power supply conversion and control module (11) comprises micro controller system (1), first relay (2), second relay (3) and electric capacity (4), first mouth (9) of micro controller system (1) links to each other with first relay (2), second mouth (10) links to each other with second relay (3), electric capacity (4) links to each other with an end of the open contact of first relay (2), another termination first mouth (31) of this open contact, the a normally closed contact one termination battery tension input end (8) of first relay (2), another termination first mouth (31), another normally closed contact one end of first relay (2) is connected to battery tension input end (8), the other end is connected to electric capacity (4), micro controller system (1) comprises first input end (5), second input end (6) and the 3rd input end (7), normally closed contact one end of first input end (5) and second relay (3) links to each other, the normally closed contact other end of second relay (3) is connected to second mouth (32), second input end (6) links to each other with an end of the open contact of second relay (3), and the other end of second relay (3) open contact is connected to second mouth (32).

3. car audio system according to claim 1 and 2, it is characterized in that: also be connected in series with first wire fuse (19) between described ACC shelves (15) and power supply conversion and control module (11) input end, also be connected in series with second wire fuse (20) between described ON shelves (16) and power supply conversion and control module (11) input end, also be connected in series with the 3rd wire fuse (18) between described storage battery (17) and power supply conversion and control module (11) input end.