CN202053981U - Switch electric appliance box of passenger car - Google Patents
Switch electric appliance box of passenger car Download PDFInfo
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- CN202053981U CN202053981U CN2011201217239U CN201120121723U CN202053981U CN 202053981 U CN202053981 U CN 202053981U CN 2011201217239 U CN2011201217239 U CN 2011201217239U CN 201120121723 U CN201120121723 U CN 201120121723U CN 202053981 U CN202053981 U CN 202053981U
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Abstract
The utility model discloses a switch electric appliance box of a passenger car, which comprises a switch electric appliance box ECU (Electronic Control Unit) with a CAN bus communication function, a system voltage/current detection circuit, a starter relay, a control system of the starter relay, a power supply main switch and a control system of the starter relay, wherein the system voltage/current detection circuit, the starter relay, the control system of the starter relay, the power supply main switch and the control system of the starter relay are all connected with the switch electric appliance box ECU; the system voltage/current detection circuit is used for detecting the intensity of system voltage and starting current, and when the system voltage and the starting current are abnormal, the system voltage/current detection circuit sends out signals respectively to a meter processor through a CAN bus to light corresponding indicator lights on a instrument panel, and cut off corresponding power supplies according to the situation; and the switch electric appliance box ECU is connected with the ECUs of a car power chain through the CAN bus, can learn the condition of the car power chain, and cut off the starter relay and the power supply of the control system of the starter relay when the car power chain is not suitable to start. The switch electric appliance box of the passenger car can fundamentally improve the safety and the reliability of the passenger car.
Description
Technical field
The utility model relates to the passenger vehicle electric field, relates to a kind of passenger vehicle device for switching box in particular, and it is used the CAN bussing technique and the car load electric system is detected and protects electric system safety.
Background technology
Electric equipment additional on the passenger vehicle is more and more complete, function also becomes increasingly abundant, because the operating characteristic of bus driving, the power supply of its electrical equipment comes from the storage battery on the passenger vehicle, and the energy source in the storage battery is in electrical generator, when electrical generator can't normal operation, electric energy can a large amount of losses and can't be replenished in the storage battery behind the vehicle launch, if the power shortage overlong time, will exhaust the electric weight of storage battery, make the vehicle can't normal starting, have a strong impact on the life-span of storage battery.In addition, when vehicle power chain (main mean engine, Automatic Transmission) when having major failure to be not suitable for starting, because instrument can't obtain the actv. failure message by the CAN bus, chaufeur also can't be judged the vehicle current state, if start vehicle and will cause invalid starting and electric energy loss this moment, reduce the starter service efficiency, influence the service life of starter.
The device for switching box is control and the critical component of protecting car load electric systems such as comprising storage battery, electrical generator, starter and battery isolator control, and it is the key factor of car load electric system reliability.But; conventional switch electrical equipment kit function is single and structure is simple and crude; its often run into during at the car load day-to-day operation such as: it is powerless that problems such as major failure and device for switching box aging speed be fast appear in discharged or defective battery overlong time, electrical generator superpressure generating fault, starter loop short trouble, vehicle power chain, and can't play connections, control veritably, in all directions and protect the effect of passenger vehicle electric system key equipment.
In view of this, the inventor has this case to produce at the defective in-depth study on the existing device for switching box performance then.
The utility model content
The purpose of this utility model is to provide a kind of passenger vehicle device for switching box, and it can play the effect of connection, control and protection passenger vehicle electric system effectively.
In order to reach above-mentioned purpose, solution of the present utility model is:
A kind of passenger vehicle device for switching box, wherein, comprise: the device for switching box ECU of band CAN bus communication function and system voltage/current detection circuit, cranking-motor relay and control system thereof and battery isolator control and the control system thereof that all links to each other with device for switching box ECU, the size of this system voltage/current detection circuit checking system voltage and starting current, and system voltage detected value and the starting current detected value that obtains transferred to device for switching box ECU respectively; Be provided with the value range of system voltage and the value range of starting current in this device for switching box ECU, when this device for switching box ECU does not fall in the value range of the value range of starting current and system voltage respectively at starting current detected value and system voltage detected value, send signal by the CAN bus respectively to the instrument treater and light corresponding indicator lamp on the instrument face plate, this device for switching box ECU also cuts off the power supply of cranking-motor relay and control system thereof and the power supply of cut off the electricity supply main supply switch and control system thereof when vehicle is in non-driving states; This device for switching box ECU is connected with each ECU of vehicle power chain by the CAN bus, and knows the situation of vehicle power chain, and this device for switching box ECU cuts off the power supply of cranking-motor relay and control system thereof when the vehicle power chain is not suitable for starting.
Further, this device for switching box ECU also sends signal by the CAN bus to the instrument treater and lights warning indicator lamp on the instrument face plate when the vehicle power chain is not suitable for starting.
Further, this passenger vehicle device for switching box also comprises ambient temperature detection module and electrical equipment box ventilating fan, this ambient temperature detection module all links to each other with device for switching box ECU with electrical equipment box ventilating fan, this ambient temperature detection module has temperature sensor in the box, outer temperature sensor of box and processes temperature signal circuit, temperature sensor in this box, the outer temperature sensor of box is monitored the variation of device for switching box box internal and external temperature in real time and by the processes temperature signal circuit temperature signal that obtains is sent into device for switching box ECU, this device for switching box ECU makes real-time comparison device for switching box internal and external temperature and obtains both numerical difference between, this device for switching box ECU also is built-in with preset value, and this device for switching box ECU is in numerical difference between control apparatus box ventilating fan work during greater than preset value.
Further, CAN controller, sampling interface circuit and control interface circuit that this device for switching box ECU comprises microprocessor and all links to each other with microprocessor, this CAN controller also is connected with the CAN transceiver, and this CAN transceiver links to each other with the CAN bus and receives fault and the status signal that each ECU of vehicle power chain sends in real time; This sampling interface circuit links to each other with system voltage/current detection circuit, and this control interface circuit then also links to each other with battery isolator control and control system thereof with cranking-motor relay and control system thereof.
After adopting said structure, the method for the passenger vehicle device for switching box that the utility model relates to and starting of control passenger vehicle and power-supply system, it can gather current Vehicle Power state in real time, and reports to the police when electric voltage exception takes place; And when the vehicle power chain had major failure and is not suitable for starting, system's start-up function was under an embargo, and sends major failure information by the CAN bus to instrument, and need just can play behind trouble-shooting, thereby fundamentally improves the safety and the reliability of passenger vehicle.
Description of drawings
The structured flowchart of Fig. 1 a kind of passenger vehicle device for switching box preferred embodiment for the utility model relates to;
Fig. 2 is the structural representation of (not comprising ambient temperature detection module and electrical equipment box ventilating fan) during device for switching box ECU inner structure in the displayed map 1;
Fig. 3 is the scheme drawing of physical relationship between ambient temperature detection module, electrical equipment box ventilating fan and the device for switching box ECU in the utility model relates to a kind of passenger vehicle device for switching box;
The diagram of circuit of the method for Fig. 4 a kind of passenger vehicle device for switching box control passenger vehicle starting and power-supply system for the utility model relates to.
Among the figure:
Passenger vehicle device for switching box 100 device for switching box ECU 1 microprocessor 11
CAN transceiver 15
System voltage/current detection circuit 2 cranking-motor relays and control system 3 thereof
Battery isolator control and control system 4 ambient temperature detection modules 5 thereof
The outer temperature sensor 52 of temperature sensor 51 boxes in the box
Processes temperature signal circuit 53 electrical equipment box ventilating fans 6 CAN buses 7
The specific embodiment
In order further to explain the technical solution of the utility model, the utility model is elaborated below by specific embodiment.
As depicted in figs. 1 and 2, a kind of passenger vehicle device for switching box 100 that it relates to for the utility model, the device for switching box ECU1 and the system voltage/current detection circuit 2, cranking-motor relay and the control system 3 thereof that all link to each other and battery isolator control and the control system 4 thereof that comprise band CAN bus communication function with device for switching box ECU1, wherein:
These system voltage/current detection circuit 2 checking system voltages, and the system voltage detected value that obtains transferred to device for switching box ECU1; Be provided with the value range of system voltage in this device for switching box ECU1, promptly comprise high potential setting value and low voltage set value; Too high or cross when low when system voltage, this device for switching box ECU1 can send signal with the too high or too low warning indicator lamp of the system voltage of lighting instrument face plate to instrument treater 300 by CAN bus 7, reminds the chaufeur fault that checks vehicles; If this moment, vehicle was in non-driving states, this device for switching box ECU1 then can cut off or delay cutting power main supply switch and control system 4 thereof, to ensure the safety and stability of storage battery and car load current consumer;
This system voltage/current detection circuit 2 also detects starting current, and the starting current detected value that obtains is transferred to device for switching box ECU1; Be provided with the value range of starting current in this device for switching box ECU1, when detecting the unusual breakdown signal of starting current, the power supply that this device for switching box ECU1 cuts off cranking-motor relay and control system 3 thereof immediately, thereby make system's fail to start, send signal to light the start system major failure indicator lamp of instrument face plate to instrument treater 300, remind chaufeur to check car load start system circuit.
This device for switching box ECU1 is connected with vehicle power chain 200 each ECU by CAN bus 7, and know the situation of vehicle power chain 200, when vehicle power chain 200 is not suitable for starting, be that vehicle power chain 200 is when major failure occurring, this device for switching box ECU1 cuts off the power supply of cranking-motor relay and control system 3 thereof, and device for switching box ECU1 also sends signal to instrument treater 300 and with the corresponding warning indicator lamp of lighting instrument face plate instrument can be shown from the alarm failure information of device for switching box ECU1 in real time with the prompting vehicle driver fault that checks vehicles, guarantee the normal operation of passenger vehicle, prolong the service life of key components and parts.
In order to allow passenger vehicle device for switching box 100 have the ponding of being difficult for, corrosion prevention and aging-resistant effect, this passenger vehicle device for switching box 100 also comprises ambient temperature detection module 5 and electrical equipment box ventilating fan 6, this ambient temperature detection module 5 all links to each other with device for switching box ECU1 with electrical equipment box ventilating fan 6, as shown in Figure 3, this ambient temperature detection module 5 has temperature sensor 51 in the box, outer temperature sensor 52 of box and processes temperature signal circuit 53, temperature sensor 51 in this box, the outer temperature sensor 52 of box monitoring device for switching box box internal and external temperature in real time changes and by processes temperature signal circuit 53 temperature signal that obtains is sent into device for switching box ECU1, this device for switching box ECU1 makes real-time comparison device for switching box internal and external temperature and obtains both numerical difference between, this device for switching box ECU1 also is built-in with preset value, and this device for switching box ECU1 is in numerical difference between control apparatus box ventilating fan 6 work during greater than preset value.Temperature sensor 51 all preferably adopts AD590 with the outer temperature sensor 52 of box in this box, and by sending into device for switching box ECU1 with voltage form behind the temperature signal processor, device for switching box ECU1 makes real-time comparison device for switching box internal and external temperature, if both numerical value differences are greater than preset value △ T1, then device for switching box ECU1 drives 6 work of electrical equipment box ventilating fan to realize the circulation of box inner air and outer air, less than preset value △ T2 (△ T2＜△ T1), guarantee that the operating temperature and the ambient temperature of passenger vehicle device for switching box 100 keeps relative stability up to box internal and external temperature numerical value difference.Thus, solved because the too high component aging problem that causes of temperature rise in the box is generated heat in the interior components and parts work of device for switching box; The acidic gas long-term existence that interior water with fixed attention of electrical equipment box that has caused when having avoided electrical equipment box internal and external temperature difference big simultaneously and storage battery discharge also slowly corrodes the problem of components and parts in the box in switch enclosure, so make the device for switching box have the ponding of being difficult for, corrosion prevention and aging-resistant characteristics.
Particularly, this device for switching box ECU1 comprises microprocessor 11 and the CAN controller 12 that all links to each other with microprocessor 11, sampling interface circuit 13 and control interface circuit 14, this CAN controller 12 also is connected with CAN transceiver 15, and this CAN transceiver 15 links to each other with CAN bus 7 and receives fault and the status signal that vehicle power chain 200 each ECU send in real time; This sampling interface circuit 13 links to each other with system voltage/ current detection circuit 2, and 14 in this control interface circuit also links to each other with battery isolator control and control system 4 thereof with cranking-motor relay and control system 3 thereof.So, when microprocessor 11 detects that system voltage is too high or too low, system opens circuit, electrical generator can not charge, during complete vehicle fault signal such as ON shelves electric power disconnection or starting current are unusual, lights corresponding warning signal indicator lamp and cut off or corresponding failure part power supply is cut off in time-delay by device for switching box ECU1 control interface by instrument treater 300 by system voltage/current detection circuit 2.During concrete enforcement, CAN controller 124 is selected PHILIPS 82C200 for use, and CAN transceiver 155 is selected PHILIPS TJA1050 for use, and adopts the communications protocol of SAE J1939 as CAN bus 7.
The process of controlling passenger vehicles starting and power-supply system for the passenger vehicle device for switching box 100 that allows the utility model relate to is more clearly embodied, the utility model also provides the method for a kind of passenger vehicle device for switching box 100 control passenger vehicle startings and power-supply system, its checking system voltage and in time warning reminding chaufeur exactly, and can control the break-make of cranking signal simultaneously by car load parts communication such as CAN bus 7 and driving engine, Automatic Transmission, instrument in good time.
As shown in Figure 4, this method comprises the steps:
Step S100: whether judge key switch at the ACC shelves, if not whether confirm repeatedly at the ACC shelves;
Step S110: closed battery isolator control, and whether judge key switch at the ON shelves, if not whether confirm repeatedly at the ON shelves;
Step S120: whether detection of engine is moved, if move, then carries out following step S200;
Step S130: receiving vehicle power chain 200(by CAN bus 7 is transmitting set and Automatic Transmission) message, and judge whether vehicle power chain 200 exists major failure, if there is major failure, system's start-up function is under an embargo, and sends major failure information to instrument by CAN bus 7;
Step S140: judge whether starter starts, if be in starting state, then monitor the state of starter, and after starter stops, being back to step S100; Preferably, also comprise step 141: when starter does not stop, then on CAN bus 7, sending the power supply status message;
Step S150: detect current power source voltage, and judge whether voltage is lower than the low voltage set value, if be not less than the low voltage set value then be back to step S100; Concrete this low voltage set value is 24V;
Step S160: send the undervoltage warning signal by CAN bus 7 to instrument, and judge whether continue low pressure surpasses setting-up time, if do not surpass then be back to step S100, in the present embodiment, what this setting-up time was selected for use is 4 minutes;
Step S170: cut off total power switch, and whether judge switch, if not confirming repeatedly that then whether switch is at the OFF shelves at the OFF shelves; If then be back to step S100;
Step S200: detect charging circuit and whether open circuit, if do not open circuit then carry out following step S300;
Step S210: send warning by CAN bus 7 to instrument, point out current can't charging the battery;
Step S220: detect current power line voltage;
Step S230: judge whether voltage is lower than the low voltage set value, if otherwise be back to step S110, if then send the undervoltage warning signal to instrument, and be back to step S110 by CAN bus 7;
Step S300: detect current power line voltage;
Step S310: judge whether voltage is higher than the high potential setting value, if be not higher than then return step S110; Concrete this high potential setting value is 32V;
Step S320: send system's over voltage alarm signal by CAN bus 7 to instrument, and return step S110.
Below the independent functional module in the above-mentioned steps is elaborated:
At first, the real-time current power supply status of collection vehicle, the power supply status when it comprises the vehicle unstart after power supply status and the starting, it specifically is divided into three kinds of states again:
State one, the power supply status when rim brake closure and vehicle unstart:
Vehicle is by storage battery power supply at this moment, and the car load power line voltage that is collected should be not less than low voltage set value 24V, is the judgement among the step S150;
State two, the power supply status during the passenger vehicle starting:
When starter started, because battery tension can reduce rapidly, this moment, power-supply management system only sent the CAN message to instrument controller, did not take any safety method, was step S141.
State three, starter stop and the power supply status of generator operation:
Vehicle is by generator powered at this moment, and the car load power line voltage that is collected should be (positive and negative deviation 1V all belongs to normal condition) about 28V, and promptly step S200 is to step S320.
Secondly, when power supply overvoltage occurs, opens circuit, during unusual condition such as under-voltage, take the corresponding protection measure:
When vehicle is in state three, when detecting system voltage, send the too high warning of system voltage to instrument by CAN bus 7 above 32V; Be step S310 and step S320.
When vehicle is in state for the moment, system voltage is lower than when setting the value of putting 24V, sends warning by CAN bus 7 to instrument, above 4 minutes main supply switchs of cutting off the electricity supply, when reopening key switch to the ON shelves, can reclose battery isolator control 4 minutes; Instrument prompting chaufeur starts as early as possible; Be step S150, S160 and S170.
When the system of detecting opens circuit, when electrical generator can not charge, send warning to instrument by CAN bus 7, remind chaufeur to note current Vehicle Power state, be step S210.
When vehicle power chain 200 has major failure and can't start the time, system's start-up function is under an embargo, and sends major failure information by CAN alignment instrument, need could start behind the trouble-shooting, be step S130.
Structure below in conjunction with Fig. 2 describes in detail once more:
When key switch closure and vehicle do not start, CAN transceiver 15 can receive fault and the status signal that vehicle power chain 200 each ECU send by CAN bus 7 in real time, send into microprocessor 11 via CAN controller 12, microprocessor 11 judges whether vehicle power chain 200 is in the major failure state that is not suitable for starting at this moment, when vehicle power chain 200 has major failure to be not suitable for starting, system can cut off the car load power supply relay automatically, and send vehicle power chain 200 major failure information to instrument treater 300 by CAN bus 7, need could start behind the trouble-shooting.
After the key switch closure, this moment, car load was in the power connection state, the switch control capsule can be gathered vehicle voltage value under the current state in real time by sampling interface circuit 13, send into microprocessor 11, simultaneously compare calculating with VREF (Voltage Reference), when the system voltage value was lower than 24V, system can disconnect by control interface circuit 14 output high level control car load power supply relay coils, thus control car load power supply; Behind vehicle launch, if microprocessor 11 detects system voltage and is higher than 32V, CAN controller 12 and CAN transceiver 15 in the switch control capsule will send the too high warning of system voltage to instrument by CAN bus 7.
The method of the passenger vehicle device for switching box 100 that the utility model relates to and starting of control passenger vehicle and power-supply system, it can gather current Vehicle Power state in real time, and reports to the police when electric voltage exception takes place; And when vehicle power chain 200 has major failure and is not suitable for starting, system's start-up function is under an embargo, send major failure information by CAN bus 7 to instrument, and need behind trouble-shooting, just can play, thereby fundamentally improve the safety and the reliability of passenger vehicle.In addition, the utility model makes whole device for switching box can be in real-time state of a control by the above-mentioned on-cycle process step of design, and checks very accurately with in time to various hidden danger and problem.
The foregoing description and graphic and non-limiting product form of the present utility model and style, any person of an ordinary skill in the technical field all should be considered as not breaking away from patent category of the present utility model to its suitable variation or modification of doing.
Claims (4)
1. passenger vehicle device for switching box, it is characterized in that, comprise: the device for switching box ECU of band CAN bus communication function and system voltage/current detection circuit, cranking-motor relay and control system thereof and battery isolator control and the control system thereof that all links to each other with device for switching box ECU, the size of this system voltage/current detection circuit checking system voltage and starting current, and system voltage detected value and the starting current detected value that obtains transferred to device for switching box ECU respectively; Be provided with the value range of system voltage and the value range of starting current in this device for switching box ECU, when this device for switching box ECU does not fall in the value range of the value range of starting current and system voltage respectively at starting current detected value and system voltage detected value, send signal by the CAN bus respectively to the instrument treater and light corresponding indicator lamp on the instrument face plate, this device for switching box ECU also cuts off the power supply of cranking-motor relay and control system thereof and the power supply of cut off the electricity supply main supply switch and control system thereof when vehicle is in non-driving states; This device for switching box ECU is connected with each ECU of vehicle power chain by the CAN bus, and knows the situation of vehicle power chain, and this device for switching box ECU cuts off the power supply of cranking-motor relay and control system thereof when the vehicle power chain is not suitable for starting.
2. passenger vehicle device for switching box as claimed in claim 1 is characterized in that, this device for switching box ECU also sends signal by the CAN bus to the instrument treater and lights warning indicator lamp on the instrument face plate when the vehicle power chain is not suitable for starting.
3. passenger vehicle device for switching box as claimed in claim 1, it is characterized in that, this passenger vehicle device for switching box also comprises ambient temperature detection module and electrical equipment box ventilating fan, this ambient temperature detection module all links to each other with device for switching box ECU with electrical equipment box ventilating fan, this ambient temperature detection module has temperature sensor in the box, outer temperature sensor of box and processes temperature signal circuit, temperature sensor in this box, the outer temperature sensor of box is monitored the variation of device for switching box box internal and external temperature in real time and by the processes temperature signal circuit temperature signal that obtains is sent into device for switching box ECU, this device for switching box ECU makes real-time comparison device for switching box internal and external temperature and obtains both numerical difference between, this device for switching box ECU also is built-in with preset value, and this device for switching box ECU is in numerical difference between control apparatus box ventilating fan work during greater than preset value.
4. passenger vehicle device for switching box as claimed in claim 1, it is characterized in that, CAN controller, sampling interface circuit and control interface circuit that this device for switching box ECU comprises microprocessor and all links to each other with microprocessor, this CAN controller also is connected with the CAN transceiver, and this CAN transceiver links to each other with the CAN bus and receives fault and the status signal that each ECU of vehicle power chain sends in real time; This sampling interface circuit links to each other with system voltage/current detection circuit, and this control interface circuit then also links to each other with battery isolator control and control system thereof with cranking-motor relay and control system thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201217239U CN202053981U (en) | 2011-04-22 | 2011-04-22 | Switch electric appliance box of passenger car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201217239U CN202053981U (en) | 2011-04-22 | 2011-04-22 | Switch electric appliance box of passenger car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202053981U true CN202053981U (en) | 2011-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201217239U Expired - Lifetime CN202053981U (en) | 2011-04-22 | 2011-04-22 | Switch electric appliance box of passenger car |
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| Country | Link |
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| CN (1) | CN202053981U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111347986A (en) * | 2018-12-21 | 2020-06-30 | 郑州宇通客车股份有限公司 | Electrical apparatus box, electrical apparatus box monitored control system and vehicle |
-
2011
- 2011-04-22 CN CN2011201217239U patent/CN202053981U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111347986A (en) * | 2018-12-21 | 2020-06-30 | 郑州宇通客车股份有限公司 | Electrical apparatus box, electrical apparatus box monitored control system and vehicle |
| CN111347986B (en) * | 2018-12-21 | 2022-05-10 | 宇通客车股份有限公司 | Electrical apparatus box, electrical apparatus box monitored control system and vehicle |
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