CN103802676B - A kind of car load power control system - Google Patents

A kind of car load power control system Download PDF

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Publication number
CN103802676B
CN103802676B CN201410055829.1A CN201410055829A CN103802676B CN 103802676 B CN103802676 B CN 103802676B CN 201410055829 A CN201410055829 A CN 201410055829A CN 103802676 B CN103802676 B CN 103802676B
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main control
control chip
load power
car load
relay
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CN103802676A (en
Inventor
王宜海
陈刚
禄正伟
韩勇
杨东风
石志勇
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Anhui Jianghuai Automobile Group Corp
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Anhui Jianghuai Automobile Group Corp
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Abstract

The invention discloses a kind of car load power control system, belong to automobile technical field.Car load power control system, including: relay, main control chip, electrical load and safety air sac controller;Described relay is connected between car load power supply and described electrical load;Described main control chip one end is connected with described safety air sac controller, and the other end is connected with described relay;Described safety air sac controller, for collection vehicle collision information, and calculate impulsive force during vehicle collision according to described vehicle collision information, when described impulsive force is more than setting value, vehicle collision signal is sent to main control chip, so that the main contacts that described main control chip controls described relay disconnects, thus cut off the connection of described car load power supply and described electrical load.This car load power control system and method, functional reliability is high, fast response time, at vehicle generation severe crash afterwards, it is possible to cut off the electricity supply in time, thus avoid the security incidents such as initiation fire.

Description

A kind of car load power control system
Technical field
The present invention relates to automobile technical field, particularly to a kind of car load power control system.
Background technology
Along with the development of science and technology, the electrical appliance of automobile gets more and more, and automotive electrical system also becomes increasingly complex, The security incident caused because of automobile circuit breakdown is appeared in the newspapers end repeatly, and these accidents are greatly due to Fail to cut off what car load power supply caused in time.Accordingly, it would be desirable to car load power supply is controlled, to prevent safety The generation of accident.
In prior art, automobile circuit generally uses electric fuse to carry out passive protection.When being short-circuited, transshipping Deng fault time, blown fuse, cut off the connection of car load power supply and faulty circuit, thus avoid on fire, The malignant events such as car load burns, personal injury occur.
Air bag use in the car is the most universal, and its effect is at vehicle generation severe crash Time, protection personnel's health is not by big injury.Owing to vehicle collision easily causes fuel leakage, circuit damage Etc. problem, now, if circuit is not yet short-circuited, overload etc. causes electric current to reach fusting current In the case of, electric fuse can not reliably fuse, thus cannot cut off car load power supply, it is easy to draws Ignition calamity;Even if additionally, electric current reaches fusting current, but owing to blown fuse speed is relatively slow, And electric current greatly easily causes spark to produce, still it is easily caused initiation fire, car crash can be caused equally Serious accident.
Summary of the invention
Embodiments provide a kind of car load power control system, at vehicle generation serious collision accident Time, it is possible to cut off car load power supply in time, thus avoid the security incidents such as breaking out of fire.
The technical scheme that the embodiment of the present invention provides is as follows:
On the one hand, it is provided that a kind of car load power control system, including: relay, main control chip, electrically Load and safety air sac controller;
Described relay is connected between car load power supply and described electrical load;
Described main control chip one end is connected with described safety air sac controller, the other end and described relay phase Even;
Described safety air sac controller, for collection vehicle collision information, and according to described vehicle collision information Calculate impulsive force during vehicle collision, when described impulsive force is more than setting value, send vehicle to main control chip Collision alarm, so that the main contacts that described main control chip controls described relay disconnects, thus cuts off described whole Car power supply and the connection of described electrical load.
Preferably, also include: the car body controller being connected with described main control chip;
Described car body controller, for receiving the block signal that Intelligent key sends, and by described block signal It is sent to described main control chip, so that the main contacts that described main control chip controls described relay disconnects, thus Cut off the connection of described car load power supply and described electrical load.
Preferably, also include: the emergency button being connected with described main control chip;
Described main control chip, is additionally operable to gather the status signal of described emergency button, described emergent when collecting Switch is for after closure state, and the main contacts controlling described relay disconnects, thus cut off described car load power supply with The connection of described electrical load.
Preferably, described main control chip, it is additionally operable to send described vehicle collision signal to described car body controller, So that described car body controller controls fastener for vehicle door and unblanks.
Preferably, also include: the flasher being connected in series and hazard warning light;Described flasher and described danger Danger emergency warning lamp is connected with described main control chip by described relay;
Described main control chip, is additionally operable to send described vehicle collision signal to described flasher and/or emergent open Close closure signal, so that described flasher controls the flicker of described hazard warning light.
Preferably, also include: be connected to the power conversion chip between car load power supply and main control chip, described Power conversion chip is for powering for described main control chip.
Preferably, also include: diode and warning against danger lamp switch;
Described warning against danger lamp switch is connected in parallel with described emergency button, and the positive pole of described diode is with described Warning against danger lamp switch is connected, and the negative pole of described diode is connected with described emergency button.
The car load power control system that the embodiment of the present invention provides, is touched by safety air sac controller collection vehicle Hit information, and calculate impulsive force during vehicle collision according to the vehicle collision information collected, work as impact When power is more than setting value, namely during vehicle generation serious collision accident, safety air sac controller is to main control chip Sending vehicle collision signal, the main contacts being controlled relay by main control chip is disconnected, thus quickly, reliably Ground cuts off the connection between car load power supply and electrical load, is prevented effectively from the generation of the security incidents such as fire.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to enforcement In example, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only Some embodiments described in the present invention, for those of ordinary skill in the art, it is also possible to according to these Accompanying drawing obtains other accompanying drawing.
Fig. 1 is the connection diagram of the car load power control system that the embodiment of the present invention provides.
Reference:
1 car load power supply;2 relays;3 main control chips;4 electrical loads;
5 safety air sac controllers;6 car body controllers;7 emergency buttons;8 flashers;
9 hazard warning lights;10 power conversion chips;11 diodes;
12 warning against danger lamp switches.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that the scheme of the embodiment of the present invention, below in conjunction with the accompanying drawings With embodiment, the embodiment of the present invention is described in further detail.
As it is shown in figure 1, the connection diagram of the car load power control system provided for the embodiment of the present invention.
In embodiments of the present invention, car load power control system may include that relay 2, main control chip 3, Electrical load 4 and safety air sac controller 5;Wherein, relay 2 can be connected to car load power supply 1 and electricity Between gas load 4;One end of main control chip 3 can be connected with safety air sac controller 5, and the other end is permissible It is connected with relay 2;Safety air sac controller 5, may be used for collection vehicle collision information, and according to car Collision information calculates impulsive force during vehicle collision, when the impulsive force calculated is more than setting value, to master Control chip 3 sends vehicle collision signal, so that the main contacts that main control chip 3 controls relay 2 disconnects, from And cut off the connection of car load power supply 1 and electrical load 4.
Specifically, when vehicle collides, collision alarm can be captured by acceleration transducer, then By safety air sac controller 5, the collision alarm of capture can be acquired, and calculate in collision process Impulsive force size, can carry out the judgement of the vehicle collision order of severity by impulsive force size, and decision is No firing safety air-bag.An impulsive force marginal value (setting value) can be previously set, if collision process In impulsive force more than this setting value, then it is assumed that there occurs serious collision accident, air bag can be passed through Controller 5 firing safety air-bag, and send vehicle collision signal to main control chip 3 simultaneously, and then by master control Chip 3 controls the main contacts of relay 2 and disconnects, and cuts off the connection between car load power supply 1 and electrical load 4. The functional reliability of this car load power control system is high, fast response time, it is possible to after avoiding vehicle to collide The security incidents such as initiation fire.Whereas if the impulsive force in collision process is less than or equal to setting value, can To think that impact severity is smaller, now, safety air sac controller 5 need not firing safety air-bag, and Do not send vehicle collision signal to main control chip 3, thus when vehicle generation slight impact, will not cut off Car load power supply 1.
Above-mentioned car load power control system, it is also possible to including: the car body controller 6 being connected with main control chip 3; Wherein, car body controller 6, may be used for receiving the block signal that Intelligent key sends, and by block signal It is sent to main control chip 3, so that the main contacts that main control chip 3 controls relay 2 disconnects, thus cutting Car power supply 1 and the connection of electrical load 4.
Specifically, LIN bus between car body controller 6 and main control chip 3, can be used to carry out communication, Car body controller 6 can receive unblanking or block signal of Intelligent key transmission.When car body controller 6 receives After the unlocking signal that Intelligent key sends, send command signal by LIN bus to main control chip 3, Making master control chip 3 control the main contacts Guan Bi of relay 2, car load power supply 1 can pass through relay 2 Main contacts power to electrical load 4, now, vehicle electrical systems is in normal operating conditions.Work as vehicle body After controller 6 receives the block signal that Intelligent key sends, by LIN bus to main control chip 3 Lose one's life order so that main control chip 3 controls the main contacts of relay 2 and disconnects, thus cuts off car load power supply 1 Connection with electrical load 4.Block signal is sent, it is believed that driver has been moved off by Intelligent key Automobile, now cuts off car load power supply 1, and vehicle circuitry is not charged, can effectively reduce the Static Electro of vehicle Stream, and then reduce the loss of car load power supply 1, it is also possible to the spontaneous combustion avoiding vehicle to cause because of circuit problem is existing As.
In order to when abnormal conditions occurs in circuit, such as, when vehicle travel process the abnormal flavour such as occur burning, Driver can be manually operated cut-out car load power supply 1, thus is provided with emergency button 7.Wherein, emergent Switch 7 could be arranged to be connected with main control chip 3 so that main control chip 3 can Real-time Collection emergency button The switch state signal of 7.When main control chip 3 collect emergency button 7 for closure state after, control relay The main contacts of device 2 disconnects, thus cuts off the connection of car load power supply 1 and electrical load 4.Endanger finding to exist During dangerous situation condition, emergency button 7 can be manually operated and cut off car load power supply 1 in time, thus avoid safety The generation of accident and fault spread.
In order to when there is security incident, it is possible to other vehicles or pedestrians are played warning function, prevents two The generation of secondary accident, can arrange flasher 8, hazard warning light 9 and warning against danger lamp switch in circuit 12, wherein, warning against danger lamp switch 12 can be connected with flasher 8, so that flasher 8 can be real-time Gather the status signal of warning against danger lamp switch 12;Can be by flasher 8 and hazard warning light 9 company of series connection Connect, when flasher 8 collect warning against danger lamp switch 12 for closure state after, warning against danger can be driven Lamp 9 flashes, and in the case of vehicle breaks down or security incident occurs, can play warning function.
Above-mentioned flasher 8 can also be connected with main control chip 3 by relay 2 with hazard warning light 9, by In main control chip 3 can the switch state signal of Real-time Collection emergency button 7, when main control chip 3 is gathering After being closure state to emergency button 7, instruction can be sent to flasher 8, so that flasher 8 drives danger Danger emergency warning lamp 9 flashes, so that surrounding vehicles and pedestrian are played warning function.Additionally, main control chip 3 also may be used With after receiving the vehicle collision signal that safety air sac controller 5 sends, send instruction to flasher 8, So that flasher 8 drives hazard warning light 9 to flash, thus when vehicle generation serious collision accident, it is possible to Warning vehicle and passerby, prevent secondary traffic accident.
When vehicle generation severe crash, main control chip 3 is receiving the car that safety air sac controller 5 sends After collision alarm, it is converted into message form, is sent to car body controller 6 by LIN bus, enters And make car body controller 6 control fastener for vehicle door and unblank, escape consequently facilitating occupant opens car door Raw.
In embodiments of the present invention, parallel connection can be used due to warning against danger lamp switch 12 and emergency button 7 Connected mode, is provided with the diode 11 for signal isolation, between wherein it is possible to make two poles The positive pole of pipe 11 is connected with warning against danger lamp switch 12, and the negative pole of diode 11 is connected with emergency button 7. The setting of diode 11, is possible to prevent the signal of warning against danger lamp switch 12 to pass to main control chip 3, makes Main control chip 3 is become to send false command, and then anti-locking system generation misoperation.
Said system can also include: the Power convert core being connected between car load power supply 1 and main control chip 3 Sheet 10, the voltage of car load power supply 1 can be converted to the work electricity of main control chip 3 by power conversion chip 10 Pressure, powers for main control chip 3.
In embodiments of the present invention, relay 2, main control chip 3 and power conversion chip 10 can design For Split type structure, it is also possible to be integrated in a module, specifically can be configured according to actual needs, this Inventive embodiments does not limits.
The car load power control system that the embodiment of the present invention provides, is touched by safety air sac controller collection vehicle Hit information, and calculate impulsive force during vehicle collision according to the vehicle collision information collected, work as impact When power is more than setting value, namely during vehicle generation serious collision accident, safety air sac controller is to main control chip Sending vehicle collision signal, the main contacts being controlled relay by main control chip is disconnected, thus quickly, reliably Ground cuts off the connection between car load power supply and electrical load, is prevented effectively from the generation of the security incidents such as fire.
Correspondingly, the embodiment of the present invention additionally provides a kind of car load power control method, may include that safety Air spring control 5 collection vehicle collision information, and calculate vehicle according to the vehicle collision information collected Impulsive force during collision;If impulsive force is more than setting value, then send vehicle collision signal to main control chip 3, So that the main contacts that main control chip 3 controls relay 2 disconnects, thus cut off car load power supply 1 and electrical load The connection of 4.Use this car load power control method, when vehicle generation serious collision accident, it is possible to quickly, It is assuredly shut off car load power supply, thus avoids the security incidents such as initiation fire.
Further, said method can also include: car body controller 6 receives closing of Intelligent key transmission After lock signal, block signal is sent to main control chip 3, so that main control chip 3 controls the master of relay 2 Contact disconnects, thus cuts off the connection of car load power supply 1 and electrical load 4.Leave automobile driver, adopt After vehicle being locked with Intelligent key transmission block signal, automatically cut off car load power supply 1, can effectively reduce The quiescent current of vehicle, and then reduce the loss of car load power supply 1, it is also possible to avoid vehicle because of circuit problem The dieseling caused.
Further, said method can also include: main control chip 3 gathers the status signal of emergency button 7, If collecting emergency button is closure state, then the main contacts controlling relay 2 disconnects, thus cutting Car power supply 1 and the connection of electrical load 4.When finding dangerous situation, can be manually operated should Anxious switch 7 cuts off car load power supply 1 in time, thus avoids generation and the fault spread of security incident.
The car load power control method that the embodiment of the present invention provides, is touched by safety air sac controller collection vehicle Hit information, and calculate impulsive force during vehicle collision according to the vehicle collision information collected, work as impact When power is more than setting value, namely during vehicle generation serious collision accident, safety air sac controller is to main control chip Sending vehicle collision signal, the main contacts being controlled relay by main control chip is disconnected, thus quickly, reliably Ground cuts off the connection between car load power supply and electrical load, is prevented effectively from the generation of the security incidents such as fire.
Each embodiment in this specification all uses the mode gone forward one by one to describe, phase homophase between each embodiment As part see mutually, what each embodiment stressed is different from other embodiments it Place.For embodiment of the method, owing to it is substantially similar to system embodiment, so describing Fairly simple, relevant part sees the part of system embodiment and illustrates.Wherein, embodiment of the method relates to And the annexation of each component as executive agent, be not limited to system embodiment and be schematically given Physical circuit connect, no matter using which kind of circuit connecting mode, all falling as long as being capable of corresponding function Enter protection scope of the present invention.System embodiment described above is only schematically, wherein said work The unit illustrated for separating component can be or may not be physically separate, shows as unit Parts can be or may not be physical location, i.e. may be located at a place, or can also be distributed On multiple NEs.Some or all of module therein can be selected according to the actual needs to realize The purpose of the present embodiment scheme.Those of ordinary skill in the art are not in the case of paying creative work, i.e. It is appreciated that and implements.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all the present invention's Within spirit and principle, any modification, equivalent substitution and improvement etc. made, should be included in the present invention's Within protection domain.

Claims (4)

1. a car load power control system, it is characterised in that including: relay, main control chip, electricity Gas load and safety air sac controller;
Described relay is connected between car load power supply and described electrical load;
Described main control chip one end is connected with described safety air sac controller, the other end and described relay phase Even;
Described safety air sac controller, for collection vehicle collision information, and according to described vehicle collision information Calculate impulsive force during vehicle collision, when described impulsive force is more than setting value, send vehicle to main control chip Collision alarm, so that the main contacts that described main control chip controls described relay disconnects, thus cuts off described whole Car power supply and the connection of described electrical load;
Also include: the car body controller being connected with described main control chip;
Described car body controller, for receiving the block signal that Intelligent key sends, and by described block signal It is sent to described main control chip, so that the main contacts that described main control chip controls described relay disconnects, thus Cut off the connection of described car load power supply and described electrical load;
Also include: the emergency button being connected with described main control chip;
Described main control chip, is additionally operable to gather the status signal of described emergency button, described emergent when collecting Switch is for after closure state, and the main contacts controlling described relay disconnects, thus cut off described car load power supply with The connection of described electrical load;
Also include: the flasher being connected in series and hazard warning light;Described flasher and described hazard warning light It is connected with described main control chip by described relay;
Described main control chip, is additionally operable to send described vehicle collision signal to described flasher and/or emergent open Close closure signal, so that described flasher controls the flicker of described hazard warning light.
System the most according to claim 1, it is characterised in that: described main control chip, be additionally operable to Described car body controller sends described vehicle collision signal, so that described car body controller controls fastener for vehicle door Unblank.
System the most according to claim 1, it is characterised in that also include: be connected to car load power supply And the power conversion chip between main control chip, described power conversion chip is for supplying for described main control chip Electricity.
System the most according to claim 1, it is characterised in that also include: diode and danger are alert Accuse lamp switch;
Described warning against danger lamp switch is connected in parallel with described emergency button, and the positive pole of described diode is with described Warning against danger lamp switch is connected, and the negative pole of described diode is connected with described emergency button.
CN201410055829.1A 2014-02-18 2014-02-18 A kind of car load power control system Active CN103802676B (en)

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KR20170068826A (en) * 2015-12-10 2017-06-20 주식회사 엘지화학 System and method for connecting battery
CN109624716B (en) * 2018-12-03 2020-09-11 浙江吉利汽车研究院有限公司 Collision protection method and device for electric automobile
CN111731215B (en) * 2020-08-03 2021-01-05 延锋伟世通电子科技(南京)有限公司 New energy automobile collision protection fast response circuit

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JP4549826B2 (en) * 2004-11-26 2010-09-22 本田技研工業株式会社 Fuel cell vehicle
CN101544215B (en) * 2009-05-12 2011-09-21 奇瑞汽车股份有限公司 High-voltage double-loop safety system of electric vehicle and method thereof
JP2013062909A (en) * 2011-09-12 2013-04-04 Toyota Motor Corp Vehicle
CN202294325U (en) * 2011-09-29 2012-07-04 上海汽车集团股份有限公司 Collision power-off protection system and hybrid vehicle using the same
CN202727995U (en) * 2012-07-31 2013-02-13 东南(福建)汽车工业有限公司 Electric automobile power output system with high-voltage quick break switch
CN202783058U (en) * 2012-09-11 2013-03-13 东风汽车公司 Safety air bag restraint system for automobiles

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Address after: Hefei City, Anhui Province, 230022 East Road No. 176

Patentee after: Anhui Jianghuai Automobile Group Limited by Share Ltd

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Patentee before: Anhui Jianghuai Automobile Co., Ltd.

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Address after: 230601 No. 99 Ziyun Road, Hefei Economic and Technological Development Zone, Anhui Province

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