CN204613294U - Vehicle-mounted static current detection device - Google Patents
Vehicle-mounted static current detection device Download PDFInfo
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- CN204613294U CN204613294U CN201520362955.1U CN201520362955U CN204613294U CN 204613294 U CN204613294 U CN 204613294U CN 201520362955 U CN201520362955 U CN 201520362955U CN 204613294 U CN204613294 U CN 204613294U
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Abstract
The utility model discloses an on-vehicle quiescent current detection device, including relay J1 that is equipped with normally open contact J1-1 and normally closed contact J1-2, battery positive input end VBAT, first rectifier diode D1, second rectifier diode D2, emitting diode D3, current-limiting resistance R1, a conversion module U1 for converting whole car quiescent current into voltage signal, a control module U2 for controlling emitting diode D3 switch, battery positive input end VBAT and car electrical control unit E etc, the utility model discloses a remind mode and rank can set for, in the vehicle use, detect the discharge current of battery after the vehicle stalls, too big if appear quiescent current, remind the user to carry out the electric leakage inspection through the alarm mode, avoid the battery to discharge excessively, influence the vehicle start.
Description
Technical field
The utility model relates to automotive electronics applied technical field, is specially a kind of vehicle-mounted Iddq testing device.
Background technology
Along with the development of electronic technology, automobile electronic control unit gets more and more, cause car load quiescent current increasing, automobile electronic control unit working power has two kinds of power supply modes, a kind of is ON and the ACC power supply being subject to igniting switch control rule, ignition switch is closed rear ECU (Electrical Control Unit) and is not worked, as: SRS air bag and ABS anti-lock braking system etc.; Another is by the normal power supply of direct battery power, ECU (Electrical Control Unit) still works after the ignition switch is turned off, as: the ECU (Electrical Control Unit) such as instrument (IC), radio and tape player (RADIO), car body controller (BCM) and keyless access system (PESP).Generally have detection quiescent current needs when current car load dispatches from the factory, but when user uses vehicle, due to the reasons such as ECU (Electrical Control Unit) internal fault and user operation cause quiescent current excessive time, user is difficult to find.
Utility model content
The purpose of this utility model provides a kind of vehicle-mounted Iddq testing device to overcome above-mentioned deficiency.
The utility model comprises the relay J 1 being provided with normally opened contact J1-1 and normally closed contact J1-2, battery positive voltage input end VBAT, first commutation diode D1, second commutation diode D2, light emitting diode D3, current-limiting resistance R1, for car load quiescent current being converted to the modular converter U1 of voltage signal, for controlling the control module U2 of light emitting diode D3 switch, battery positive voltage input end VBAT and automobile electronic control unit E, it is characterized in that: the anode of described first commutation diode D1 is connected with ignition switch ACC shelves power supply, the anode of described second commutation diode D2 is connected with ignition switch ON shelves power supply, described first commutation diode D1 is connected with relay J 1 with after the negative electrode parallel connection of the second commutation diode D2, described battery positive voltage input end VBAT is powered to automobile electronic control unit E by normally opened contact J1-1, the quiescent current input end of described modular converter U1 is connected with the two ends of normally opened contact J1-1, the described voltage signal output end of modular converter U1 is connected with the voltage signal inputs of control module U2, the signal output part of described control module U2 is connected with the negative electrode of light emitting diode D3, described current-limiting resistance R1 is connected between the anode of normally closed contact J1-2 and light emitting diode D3.
Alerting pattern of the present utility model and rank can set, and in vehicle use procedure, after stopping working to vehicle, the discharge current of accumulator detects, as occurred, quiescent current is excessive, carry out earth detection by type of alarm reminding user, avoid accumulator over-discharge can, affect vehicle launch.
Accompanying drawing explanation
Fig. 1 is the utility model electrical block diagram.
Embodiment
The utility model is further illustrated below in conjunction with drawings and Examples.
Embodiment: the utility model comprises the relay J 1 being provided with normally opened contact J1-1 and normally closed contact J1-2, battery positive voltage input end VBAT, first commutation diode D1, second commutation diode D2, light emitting diode D3, current-limiting resistance R1, for car load quiescent current being converted to the modular converter U1 of voltage signal, for controlling the control module U2 of light emitting diode D3 switch, battery positive voltage input end VBAT and automobile electronic control unit E, it is characterized in that: the anode of described first commutation diode D1 is connected with ignition switch ACC shelves power supply, the anode of described second commutation diode D2 is connected with ignition switch ON shelves power supply, described first commutation diode D1 is connected with relay J 1 with after the negative electrode parallel connection of the second commutation diode D2, described battery positive voltage input end VBAT is powered to automobile electronic control unit E by normally opened contact J1-1, the quiescent current input end of described modular converter U1 is connected with the two ends of normally opened contact J1-1, the described voltage signal output end of modular converter U1 is connected with the voltage signal inputs of control module U2, the signal output part of described control module U2 is connected with the negative electrode of light emitting diode D3, described current-limiting resistance R1 is connected between the anode of normally closed contact J1-2 and light emitting diode D3, Vout connects the normal electric power end of ECU (Electrical Control Unit), normally opened contact J1-1 and normally closed contact J1-2 shares a power supply.MAX9922 or the MAX9923 high side current detecting amplifier that described modular converter U1 can adopt MAXIM company to produce.The MC9RS08K series microprocessor that described control module U2 can adopt FREESCALE company to produce.Described automobile electronic control unit E comprises instrument IC, radio and tape player RADIO, car body controller BCM in parallel mutually) and keyless access system PESP.Above-mentioned finished product can be bought in market to be directly connected in circuit and use.
When ignition switch ACC or ON shelves power supply connect time, the normally opened contact J1-1 of relay J 1 connects, battery feed by J1-1 directly to power supplies such as instrument IC, radio and tape player RADIO, car body controller BCM, keyless access system PESP; J1-2 normally closed contact disconnects, and Iddq testing installation's power source disconnects, and does not now carry out Iddq testing.When ACC and the ON shelves power supply of ignition switch disconnects, namely ignition switch disconnects, the normally opened contact J1-1 of relay J 1 disconnects, normally closed contact J1-2 connects, Iddq testing installation's power source is connected and is started working, now quiescent current flows into from the I+ of modular converter U1, I-flows out, modular converter U1 converts quiescent current to voltage V1, and export to the V2 port of control module U2, control module U2 calculates V2 voltage and judges, when exceeding nominal quiescent current limit, output signal to U3 driver module reminding user, alerting pattern can sound or light, remind rank can be single-stage or multistage.
Claims (4)
1. a vehicle-mounted Iddq testing device, comprise the relay J 1 being provided with normally opened contact J1-1 and normally closed contact J1-2, battery positive voltage input end VBAT, first commutation diode D1, second commutation diode D2, light emitting diode D3, current-limiting resistance R1, for car load quiescent current being converted to the modular converter U1 of voltage signal, for controlling the control module U2 of light emitting diode D3 switch, battery positive voltage input end VBAT and automobile electronic control unit E, it is characterized in that: the anode of described first commutation diode D1 is connected with ignition switch ACC shelves power supply, the anode of described second commutation diode D2 is connected with ignition switch ON shelves power supply, described first commutation diode D1 is connected with relay J 1 with after the negative electrode parallel connection of the second commutation diode D2, described battery positive voltage input end VBAT is powered to automobile electronic control unit E by normally opened contact J1-1, the quiescent current input end of described modular converter U1 is connected with the two ends of normally opened contact J1-1, the described voltage signal output end of modular converter U1 is connected with the voltage signal inputs of control module U2, the signal output part of described control module U2 is connected with the negative electrode of light emitting diode D3, described current-limiting resistance R1 is connected between the anode of normally closed contact J1-2 and light emitting diode D3.
2. vehicle-mounted Iddq testing device according to claim 1, is characterized in that: described modular converter U1 is MAX9922 or MAX9923 high side current detecting amplifier.
3. vehicle-mounted Iddq testing device according to claim 1 or 2, is characterized in that: described control module U2 is MC9RS08KA series microprocessor.
4. vehicle-mounted Iddq testing device according to claim 1 or 2, is characterized in that: described automobile electronic control unit E comprises instrument IC, radio and tape player RADIO in parallel mutually, car body controller BCM and keyless access system PESP.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520362955.1U CN204613294U (en) | 2015-05-29 | 2015-05-29 | Vehicle-mounted static current detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520362955.1U CN204613294U (en) | 2015-05-29 | 2015-05-29 | Vehicle-mounted static current detection device |
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| CN204613294U true CN204613294U (en) | 2015-09-02 |
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| CN201520362955.1U Active CN204613294U (en) | 2015-05-29 | 2015-05-29 | Vehicle-mounted static current detection device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105873301A (en) * | 2016-06-07 | 2016-08-17 | 黎辉 | Semi-wave shunting type single-live-wire LED (Light Emitting Diode) lamp double-control electronic switch |
| CN107796983A (en) * | 2017-10-31 | 2018-03-13 | 华晨汽车集团控股有限公司 | A kind of electronics ECU Iddq testing methods |
| CN108061817A (en) * | 2017-11-17 | 2018-05-22 | 北京长安汽车工程技术研究有限责任公司 | A kind of method, apparatus and vehicle of dark current measurement |
| CN109557359A (en) * | 2018-11-30 | 2019-04-02 | 上汽通用汽车有限公司 | Vehicle Iddq testing circuit |
| CN109917294A (en) * | 2019-03-25 | 2019-06-21 | 深圳艾威仕汽车检测设备有限公司 | Vehicle battery electric leakage monitoring method based on big data analysis |
| CN112389352A (en) * | 2020-11-17 | 2021-02-23 | 华人运通(江苏)技术有限公司 | Finished automobile static current management system and method |
| CN113049866A (en) * | 2019-12-27 | 2021-06-29 | 北京新能源汽车股份有限公司 | Static current test system and static current test method of electric automobile |
-
2015
- 2015-05-29 CN CN201520362955.1U patent/CN204613294U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105873301A (en) * | 2016-06-07 | 2016-08-17 | 黎辉 | Semi-wave shunting type single-live-wire LED (Light Emitting Diode) lamp double-control electronic switch |
| CN107796983A (en) * | 2017-10-31 | 2018-03-13 | 华晨汽车集团控股有限公司 | A kind of electronics ECU Iddq testing methods |
| CN108061817A (en) * | 2017-11-17 | 2018-05-22 | 北京长安汽车工程技术研究有限责任公司 | A kind of method, apparatus and vehicle of dark current measurement |
| CN109557359A (en) * | 2018-11-30 | 2019-04-02 | 上汽通用汽车有限公司 | Vehicle Iddq testing circuit |
| CN109917294A (en) * | 2019-03-25 | 2019-06-21 | 深圳艾威仕汽车检测设备有限公司 | Vehicle battery electric leakage monitoring method based on big data analysis |
| CN113049866A (en) * | 2019-12-27 | 2021-06-29 | 北京新能源汽车股份有限公司 | Static current test system and static current test method of electric automobile |
| CN112389352A (en) * | 2020-11-17 | 2021-02-23 | 华人运通(江苏)技术有限公司 | Finished automobile static current management system and method |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |