CN203611778U - DC/DC monitoring device - Google Patents
DC/DC monitoring device Download PDFInfo
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- CN203611778U CN203611778U CN201320789414.8U CN201320789414U CN203611778U CN 203611778 U CN203611778 U CN 203611778U CN 201320789414 U CN201320789414 U CN 201320789414U CN 203611778 U CN203611778 U CN 203611778U
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- voltage
- monitoring device
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The utility model relates to the technical field of automobile power monitoring and provides a DC/DC monitoring device. The DC/DC monitoring device comprises first voltage sensors and second voltage sensors, the first voltage sensors are arranged at the DC/DC voltage input end in a parallel connection mode, the second voltage sensors are arranged at the DC/DC voltage output end in a parallel connection mode, the first voltage sensors and the second voltage sensors are electrically connected with a signal processing module, the signal processing module is connected with an automobile control unit through a CAN bus, and the automobile control unit is electrically connected with a finished automobile instrument. Voltage parameters are judged, corresponding motion instruction output is performed, judging results are sent to the finished automobile instrument to undergo display output, fault information of a DC/DC branch circuit is timely obtained, corresponding alarm work is performed while the DC/DC branch circuit is disconnected, and safety of the whole automobile is guaranteed.
Description
Technical field
The utility model belongs to automobile power monitoring technical field, relates in particular to a kind of DC/DC monitoring device.
Background technology
DC/DC technology refers to that by a fixing DC voltage conversion be variable vdc.This technology is widely used in stepless change and the control of trackless trolley car, subway train, battery-driven car, makes above-mentioned control obtain simultaneously and accelerates performance steady, that respond fast, and receive the effect of saving electric energy simultaneously.
DC/DC is the parts that low potential source is provided to hybrid vehicle or pure electric automobile low voltage control system and Lighting System, can charge to low tension battery simultaneously.Hybrid vehicle low voltage control system is by vehicle-mounted 24V storage battery power supply, in car load high and low voltage electrical equipment system, by DC/DC, the high-tension current of electrokinetic cell is converted to 27V low tension storage battery is charged, the normal work of DC/DC is the prerequisite that guarantees the normal work of car load high and low voltage electrical equipment system.
Existing DC/DC only has the parts that low potential source is provided for automobile low voltage control system and Lighting System, and low tension battery is carried out to charge function, there is no the function to automobile control unit feedback operation status signal, automobile control unit cannot be known the working state signal of DC/DC, normally whether it only can by controlling mode of operation that the break-make of DC/DC branch road repeat circuit in high-tension distribution box controls DC/DC, when going wrong, DC/DC itself cannot cut off in time DC/DC branch road, can cause to low voltage control system the damage of high-low pressure electric wiring or components and parts, thereby affect ride safety of automobile or cause automobile normally not move.
Utility model content
The purpose of this utility model is to provide a kind of DC/DC monitoring device, be intended to solve DC/DC of the prior art and only there are the parts that low potential source is provided for automobile low voltage control system and Lighting System, and low tension battery is carried out to charge function, there is no the function to automobile control unit feedback operation status signal, when going wrong, DC/DC itself cannot cut off in time DC/DC branch road, can cause the damage of high-low pressure electric wiring or components and parts to low voltage control system, thus the problem that affects ride safety of automobile or cause automobile normally not move.
The utility model is to realize like this, a kind of DC/DC monitoring device, the series-parallel connection of described DC/DC monitoring device is by electrokinetic cell, high-tension distribution box, in the loop of the high-tension distribution box that DC/DC and storage battery form, described DC/DC monitoring device comprises the first voltage sensor and second voltage sensor, described the first voltage sensor is arranged in parallel the voltage input end at described DC/DC, described second voltage sensor is arranged in parallel the voltage output end at described DC/DC, described the first voltage sensor is connected signal processing module with second voltage sensor electrical, described signal processing module connects automobile control unit by CAN bus, described automobile control unit electrical connection vehicle complete vehicle instrument.
As a kind of improved plan, described DC/DC monitoring device also comprises the first current sensor and the second current sensor that are electrically connected with described signal processing module respectively, described the first current sensor series connection is arranged on the voltage input end of described DC/DC, and described the second current sensor series connection is arranged on the voltage output end of described DC/DC.
As a kind of improved plan, the branch road of the voltage input end of described DC/DC is provided with fuse.
As a kind of improved plan, described DC/DC inside is provided with temperature sensor, and described temperature sensor is electrically connected with described signal processing module.
As a kind of improved plan, described DC/DC inside is provided with temperature sensor, and described temperature sensor is electrically connected with described signal processing module.
As a kind of improved plan, on the branch road of the voltage input end of described DC/DC, be also provided with relay.
As a kind of improved plan, one end of the low pressure control line of described relay is connected to the positive pole of described storage battery, other end ground connection by self-lock switch.
Due to by electrokinetic cell, high-tension distribution box, the loop of the high-tension distribution box that DC/DC and storage battery form arranges DC/DC monitoring device, this monitoring device comprises the voltage input end that is arranged on DC/DC, the first voltage sensor of mouth and second voltage sensor, voltage input end to DC/DC respectively, the voltage of mouth carries out Real-Time Monitoring, and the voltage parameter existing with analog signaling monitoring is delivered to signal processing module, analog signal is converted to CAN message by signal processing module, and be sent to automobile control unit by CAN bus, automobile control unit judges voltage parameter, carry out the output of corresponding action command, judged result is sent to vehicle complete vehicle instrument simultaneously and show output, thereby know in time the failure message of DC/DC branch road, when cutting off DC/DC branch road, make corresponding warning work, ensure the safety of car load.
Owing to increasing the first current sensor and the second current sensor are set in DC/DC monitoring device, its respectively the electric current of the input end to DC/DC and mouth carry out Real-Time Monitoring, it is for automobile driver or test tester are when providing current parameters, it coordinates with the first voltage sensor and second voltage sensor, DC/DC branch road is carried out to the monitoring of current/voltage, complete the real-time monitoring to DC/DC mode of operation, ensure more accurately the safety of car load.
On branch road due to the voltage input end at DC/DC, be provided with fuse, in the time that the electric current of high-tension distribution box branch road exceedes the rated current of fuse, fuse cuts off branch road in time, ensures the safety of vehicle complete vehicle.
Because DC/DC inside is provided with temperature sensor, this temperature sensor is monitored in real time to the operating ambient temperature of DC/DC inside, realizes the components and parts of DC/DC inside are protected.
On the branch road of the voltage input end of DC/DC, relay is also set, realizes the break-make to high voltage power distribution branch road.
The break-make of relay can be controlled by the self-lock switch arranging, thereby realizes the control of the break-make to whole high voltage power distribution branch road.
Accompanying drawing explanation
Fig. 1 is the circuit connection diagram of the DC/DC monitoring device that provides of the utility model embodiment mono-;
Fig. 2 is the circuit connection diagram of the DC/DC monitoring device that provides of the utility model embodiment bis-;
Fig. 3 is the circuit connection diagram of the DC/DC monitoring device that provides of the utility model embodiment tri-;
Fig. 4 is the circuit connection diagram of the DC/DC monitoring device that provides of the utility model embodiment tetra-;
Wherein, 1-DC/DC monitoring device, 11-the first voltage sensor, 12-second voltage sensor, 13-signal processing module, 14-the first current sensor, 15-the second current sensor, 16-fuse, 17-temperature sensor, 18-relay, 19-self-lock switch, 2-electrokinetic cell, 3-high-tension distribution box, 4-DC/DC, 5-storage battery, 6-automobile control unit, 7-vehicle complete vehicle instrument.
The specific embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Fig. 1 shows the circuit connection diagram of the DC/DC monitoring device that the utility model provides, and for convenience of explanation, has only provided the part relevant to the utility model in figure.
Dotted portion in DC/DC monitoring device 1(figure) series-parallel connection is by electrokinetic cell 2, high-tension distribution box 3, in the loop of the high-tension distribution box that DC/DC4 and storage battery 5 form, this DC/DC monitoring device comprises the first voltage sensor 11 and second voltage sensor 12, described the first voltage sensor 11 is arranged in parallel the voltage input end at described DC/DC4, described second voltage sensor 12 is arranged in parallel the voltage output end at described DC/DC4, described the first voltage sensor 11 and second voltage sensor 12 are electrically connected signal processing module 13, described signal processing module 13 connects automobile control unit 6 by CAN bus (doublet in figure), described automobile control unit 6 is electrically connected vehicle complete vehicle instrument 7.
In this embodiment, the first voltage sensor 11 is connected in parallel on the voltage input end (being high-tension distribution box DC/DC branch road mouth) of DC/DC4, the voltage of Real-Time Monitoring high-tension distribution box DC/DC branch road mouth, thereby judge response condition when automobile control unit sends the interior actuating of relay of instruction control high-tension distribution box, and second voltage sensor is connected in parallel on the voltage output end of DC/DC4, can judge in time the mode of operation of DC/DC by the voltage parameter of these two Sensor monitorings, thereby show by car load instrument, and do the use of other test references.
Wherein, above-mentioned automobile control unit comprises the control unit as hybrid vehicle, i.e. hybrid power automobile power assembly control unit (Hybrid Combining Unit, HUC).
Due to by electrokinetic cell, high-tension distribution box, the loop of the high-tension distribution box that DC/DC and storage battery form arranges DC/DC monitoring device, this monitoring device comprises the voltage input end that is arranged on DC/DC, the first voltage sensor of mouth and second voltage sensor, voltage input end to DC/DC respectively, the voltage of mouth carries out Real-Time Monitoring, and the voltage parameter existing with analog signaling monitoring is delivered to signal processing module, analog signal is converted to CAN message by signal processing module, and be sent to automobile control unit by CAN bus, automobile control unit judges voltage parameter, carry out the output of corresponding action command, judged result is sent to vehicle complete vehicle instrument simultaneously and show output, thereby know in time the failure message of DC/DC branch road, when cutting off DC/DC branch road, make corresponding warning work, ensure the safety of car load.
In the utility model, as shown in Figure 2, DC/DC monitoring device 1 also comprises the first current sensor 14 and the second current sensor 15 that are electrically connected with described signal processing module 13 respectively, described the first current sensor 14 series connection are arranged on the voltage input end of described DC/DC4, and described the second current sensor 15 series connection are arranged on the voltage output end of described DC/DC4.
Wherein, in DC/DC monitoring device 1, increase the first current sensor 14 and the second current sensor 15 are set, its input end to DC/DC4 and the electric current of mouth carry out Real-Time Monitoring, it is for automobile driver or test tester are when providing current parameters, it coordinates with the first voltage sensor 11 and second voltage sensor 12, DC/DC4 branch road is carried out to the monitoring of current/voltage, complete the real-time monitoring to DC/DC4 mode of operation, ensure more accurately the safety of car load.
In the utility model, on the basis of the embodiment shown in Fig. 1, as shown in Figure 3, the branch road of the voltage input end of DC/DC4 is provided with fuse 16, in the time that the electric current of high-tension distribution box branch road exceedes the rated current of fuse 16, fuse 16 cuts off branch road in time, ensures the safety of vehicle complete vehicle.
In the utility model, on the basis of the embodiment shown in Fig. 1 or Fig. 2 or Fig. 3, as shown in Figure 4, DC/DC4 inside is provided with temperature sensor 17, and described temperature sensor 17 is electrically connected with described signal processing module 13.
Because DC/DC inside is provided with temperature sensor, this temperature sensor is monitored in real time to the operating ambient temperature of DC/DC inside, realizes the components and parts of DC/DC inside are protected.
Certainly, the first current sensor 14, the second current sensor 15, fuse 16 and temperature sensor 17 can be used as a preferred embodiment and describe, do not repeat them here, but not in order to limit the utility model.
In the utility model, on the branch road of the voltage input end of DC/DC4, be also provided with relay 18, one end of the low pressure control line of relay 18 is connected to the positive pole of described storage battery 5, other end ground connection by self-lock switch 19.
Wherein, on the branch road of the voltage input end of DC/DC4, relay 18 is also set, realize the break-make to high voltage power distribution branch road, the break-make of relay 18 can be controlled by the self-lock switch 19 arranging, thereby realizes the control of the break-make to whole high voltage power distribution branch road.
In the utility model, can connect direct supply at DC/DC product input end by this device, the voltage of monitoring DC/DC input and output judges whether the parameters such as the DC/DC transformer ratio of buying meet the requirements, for the checking and accepting of DC/DC and some follow-up stand tests, do not repeat them here, but not in order to limit the utility model.
In the utility model, known in conjunction with above-mentioned each embodiment, the technique effect of the utility model DC/DC monitoring device is as follows:
(1) increasing voltage (the first voltage sensor and second voltage sensor) and electric current (the first current sensor and the second current sensor) and CAN communication apparatus (signal processing module and CAN bus architecture) can monitor in real time to the mode of operation of DC/DC, ensures the safety of car load;
(2) the inner temperature sensor that increases of DC/DC, can monitor in real time to DC/DC internal work ambient temperature, can play certain protective role to the components and parts of DC/DC own;
(3) in the time that DC/DC branch road breaks down, thereby automobile control unit obtains feedback signal disconnected branches relay cut-out in time DC/DC branch road, guarantees the safety of whole-control system;
(4) utilize external source, can realize the detection to DC/DC function, whether checking DC/DC state is normal;
(5) in particular cases can manually disconnect DC/DC branch road by relay.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (7)
1. a DC/DC monitoring device, it is characterized in that, the series-parallel connection of described DC/DC monitoring device is by electrokinetic cell, high-tension distribution box, in the loop of the high-tension distribution box that DC/DC and storage battery form, described DC/DC monitoring device comprises the first voltage sensor and second voltage sensor, described the first voltage sensor is arranged in parallel the voltage input end at described DC/DC, described second voltage sensor is arranged in parallel the voltage output end at described DC/DC, described the first voltage sensor is connected signal processing module with second voltage sensor electrical, described signal processing module connects automobile control unit by CAN bus, described automobile control unit electrical connection vehicle complete vehicle instrument.
2. DC/DC monitoring device according to claim 1, it is characterized in that, described DC/DC monitoring device also comprises the first current sensor and the second current sensor that are electrically connected with described signal processing module respectively, described the first current sensor series connection is arranged on the voltage input end of described DC/DC, and described the second current sensor series connection is arranged on the voltage output end of described DC/DC.
3. DC/DC monitoring device according to claim 1 and 2, is characterized in that, the branch road of the voltage input end of described DC/DC is provided with fuse.
4. DC/DC monitoring device according to claim 3, is characterized in that, described DC/DC inside is provided with temperature sensor, and described temperature sensor is electrically connected with described signal processing module.
5. DC/DC monitoring device according to claim 1, is characterized in that, described DC/DC inside is provided with temperature sensor, and described temperature sensor is electrically connected with described signal processing module.
6. DC/DC monitoring device according to claim 1 and 2, is characterized in that, is also provided with relay on the branch road of the voltage input end of described DC/DC.
7. DC/DC monitoring device according to claim 6, is characterized in that, one end of the low pressure control line of described relay is connected to the positive pole of described storage battery, other end ground connection by self-lock switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320789414.8U CN203611778U (en) | 2013-12-03 | 2013-12-03 | DC/DC monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320789414.8U CN203611778U (en) | 2013-12-03 | 2013-12-03 | DC/DC monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203611778U true CN203611778U (en) | 2014-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320789414.8U Expired - Fee Related CN203611778U (en) | 2013-12-03 | 2013-12-03 | DC/DC monitoring device |
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| Country | Link |
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| CN (1) | CN203611778U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106314179A (en) * | 2016-08-31 | 2017-01-11 | 安徽安凯汽车股份有限公司 | Electric power management system for low tension battery of electric car |
| CN108398608A (en) * | 2018-02-01 | 2018-08-14 | 阿尔特汽车技术股份有限公司 | A kind of electric vehicle DCDC off-line test methods based on entire car controller |
| CN109278559A (en) * | 2018-09-05 | 2019-01-29 | 北京长城华冠汽车科技股份有限公司 | Over-voltage protection method, system and the electric car of electric car |
| CN110103718A (en) * | 2019-05-06 | 2019-08-09 | 奇瑞汽车股份有限公司 | A kind of bypass protection system of high-voltage bidirectional DCDC for electric vehicle |
| WO2023130630A1 (en) * | 2022-01-10 | 2023-07-13 | 宁德时代新能源科技股份有限公司 | Power supply system and electric vehicle |
-
2013
- 2013-12-03 CN CN201320789414.8U patent/CN203611778U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106314179A (en) * | 2016-08-31 | 2017-01-11 | 安徽安凯汽车股份有限公司 | Electric power management system for low tension battery of electric car |
| CN108398608A (en) * | 2018-02-01 | 2018-08-14 | 阿尔特汽车技术股份有限公司 | A kind of electric vehicle DCDC off-line test methods based on entire car controller |
| CN109278559A (en) * | 2018-09-05 | 2019-01-29 | 北京长城华冠汽车科技股份有限公司 | Over-voltage protection method, system and the electric car of electric car |
| CN110103718A (en) * | 2019-05-06 | 2019-08-09 | 奇瑞汽车股份有限公司 | A kind of bypass protection system of high-voltage bidirectional DCDC for electric vehicle |
| WO2023130630A1 (en) * | 2022-01-10 | 2023-07-13 | 宁德时代新能源科技股份有限公司 | Power supply system and electric vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140528 Termination date: 20141203 |
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| EXPY | Termination of patent right or utility model |